1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018,2019 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
|
|
40 | #ifndef _WIN32 |
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41 | # include "config.h" |
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|
42 | #endif |
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43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
41 | |
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42 | #ifdef EIO_STACKSIZE |
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43 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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44 | #endif |
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45 | #include "xthread.h" |
45 | #include "ecb.h" |
46 | |
46 | |
47 | #include <errno.h> |
47 | #include <errno.h> |
48 | #include <stddef.h> |
48 | #include <stddef.h> |
49 | #include <stdlib.h> |
49 | #include <stdlib.h> |
50 | #include <string.h> |
50 | #include <string.h> |
… | |
… | |
53 | #include <sys/stat.h> |
53 | #include <sys/stat.h> |
54 | #include <limits.h> |
54 | #include <limits.h> |
55 | #include <fcntl.h> |
55 | #include <fcntl.h> |
56 | #include <assert.h> |
56 | #include <assert.h> |
57 | |
57 | |
|
|
58 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
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59 | /* intptr_t only comes from stdint.h, says idiot openbsd coder */ |
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60 | #if HAVE_STDINT_H |
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61 | # include <stdint.h> |
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62 | #endif |
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63 | |
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64 | #ifndef ECANCELED |
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65 | # define ECANCELED EDOM |
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66 | #endif |
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67 | #ifndef ELOOP |
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68 | # define ELOOP EDOM |
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69 | #endif |
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70 | |
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71 | #if !defined(ENOTSOCK) && defined(WSAENOTSOCK) |
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72 | # define ENOTSOCK WSAENOTSOCK |
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73 | #endif |
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74 | |
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75 | static void eio_destroy (eio_req *req); |
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76 | |
58 | #ifndef EIO_FINISH |
77 | #ifndef EIO_FINISH |
59 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
78 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
60 | #endif |
79 | #endif |
61 | |
80 | |
62 | #ifndef EIO_DESTROY |
81 | #ifndef EIO_DESTROY |
… | |
… | |
65 | |
84 | |
66 | #ifndef EIO_FEED |
85 | #ifndef EIO_FEED |
67 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
86 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
68 | #endif |
87 | #endif |
69 | |
88 | |
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89 | #ifndef EIO_FD_TO_WIN32_HANDLE |
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90 | # define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
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91 | #endif |
|
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92 | #ifndef EIO_WIN32_HANDLE_TO_FD |
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93 | # define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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94 | #endif |
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95 | |
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96 | #define EIO_ERRNO(errval,retval) ((errno = errval), retval) |
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97 | |
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98 | #define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1) |
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99 | |
70 | #ifdef _WIN32 |
100 | #ifdef _WIN32 |
71 | |
101 | |
72 | /*doh*/ |
102 | #undef PAGESIZE |
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103 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
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104 | |
|
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105 | /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */ |
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106 | |
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107 | #ifdef EIO_STRUCT_STATI64 |
|
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108 | /* look at perl's non-sloppy stat */ |
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109 | #define stat(path,buf) _stati64 (path,buf) |
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110 | #define fstat(fd,buf) _fstati64 (fd,buf) |
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111 | #endif |
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112 | #define lstat(path,buf) stat (path,buf) |
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113 | #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
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114 | #define mkdir(path,mode) _mkdir (path) |
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115 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
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116 | |
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117 | #define chmod(path,mode) _chmod (path, mode) |
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118 | #define dup(fd) _dup (fd) |
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119 | #define dup2(fd1,fd2) _dup2 (fd1, fd2) |
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120 | #define pipe(fds) _pipe (fds, 4096, O_BINARY) |
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121 | |
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122 | #define fcntl(fd,cmd,arg) EIO_ENOSYS () |
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123 | #define ioctl(fd,cmd,arg) EIO_ENOSYS () |
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124 | #define fchmod(fd,mode) EIO_ENOSYS () |
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125 | #define chown(path,uid,gid) EIO_ENOSYS () |
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126 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
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127 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
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128 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
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129 | #define mknod(path,mode,dev) EIO_ENOSYS () |
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130 | #define sync() EIO_ENOSYS () |
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131 | #define readlink(path,buf,s) EIO_ENOSYS () |
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132 | #define statvfs(path,buf) EIO_ENOSYS () |
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133 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
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134 | |
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135 | #define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset) |
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136 | #define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset) |
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137 | |
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138 | #if __GNUC__ |
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139 | typedef long long eio_off_t; /* signed for compatibility to msvc */ |
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140 | #else |
|
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141 | typedef __int64 eio_off_t; /* unsigned not supported by msvc */ |
|
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142 | #endif |
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143 | |
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144 | static eio_ssize_t |
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145 | eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset) |
|
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146 | { |
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147 | OVERLAPPED o = { 0 }; |
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148 | DWORD got; |
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149 | |
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150 | o.Offset = offset; |
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151 | o.OffsetHigh = offset >> 32; |
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152 | |
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153 | return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o) |
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154 | ? got : -1; |
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155 | } |
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156 | |
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157 | static eio_ssize_t |
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158 | eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset) |
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159 | { |
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160 | OVERLAPPED o = { 0 }; |
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161 | DWORD got; |
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162 | |
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163 | o.Offset = offset; |
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164 | o.OffsetHigh = offset >> 32; |
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165 | |
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166 | return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o) |
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167 | ? got : -1; |
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168 | } |
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169 | |
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170 | /* rename() uses MoveFile, which fails to overwrite */ |
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171 | #define rename(old,neu) eio__rename (old, neu) |
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172 | |
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173 | static int |
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174 | eio__rename (const char *old, const char *neu) |
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175 | { |
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176 | if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING)) |
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177 | return 0; |
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178 | |
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179 | /* should steal _dosmaperr */ |
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180 | switch (GetLastError ()) |
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181 | { |
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182 | case ERROR_FILE_NOT_FOUND: |
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183 | case ERROR_PATH_NOT_FOUND: |
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184 | case ERROR_INVALID_DRIVE: |
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185 | case ERROR_NO_MORE_FILES: |
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186 | case ERROR_BAD_NETPATH: |
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187 | case ERROR_BAD_NET_NAME: |
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188 | case ERROR_BAD_PATHNAME: |
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189 | case ERROR_FILENAME_EXCED_RANGE: |
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190 | errno = ENOENT; |
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191 | break; |
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192 | |
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193 | default: |
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194 | errno = EACCES; |
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195 | break; |
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196 | } |
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197 | |
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198 | return -1; |
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199 | } |
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200 | |
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201 | /* we could even stat and see if it exists */ |
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202 | static int |
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203 | symlink (const char *old, const char *neu) |
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204 | { |
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205 | #if WINVER >= 0x0600 |
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206 | int flags; |
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207 | |
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208 | /* This tries out all combinations of SYMBOLIC_LINK_FLAG_DIRECTORY |
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209 | * and SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE, |
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210 | * with directory first. |
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211 | */ |
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212 | for (flags = 3; flags >= 0; --flags) |
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213 | if (CreateSymbolicLink (neu, old, flags)) |
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214 | return 0; |
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215 | #endif |
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216 | |
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217 | return EIO_ERRNO (ENOENT, -1); |
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218 | } |
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219 | |
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220 | /* POSIX API only, causing trouble for win32 apps */ |
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221 | #define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */ |
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222 | #define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */ |
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223 | |
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224 | struct statvfs |
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225 | { |
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226 | int dummy; |
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227 | }; |
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228 | |
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229 | #define DT_DIR EIO_DT_DIR |
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230 | #define DT_REG EIO_DT_REG |
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231 | #define D_NAME(entp) entp.cFileName |
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232 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
73 | |
233 | |
74 | #else |
234 | #else |
75 | |
235 | |
76 | # include "config.h" |
236 | #include <sys/ioctl.h> |
77 | # include <sys/time.h> |
237 | #include <sys/time.h> |
78 | # include <sys/select.h> |
238 | #include <sys/select.h> |
79 | # include <unistd.h> |
239 | #include <unistd.h> |
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240 | #include <signal.h> |
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241 | #include <dirent.h> |
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242 | |
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243 | #ifdef ANDROID |
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244 | #include <sys/vfs.h> |
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245 | #define statvfs statfs |
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246 | #define fstatvfs fstatfs |
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247 | #include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */ |
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248 | #else |
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249 | #include <sys/statvfs.h> |
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250 | #endif |
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251 | |
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252 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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253 | #include <sys/mman.h> |
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254 | #endif |
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255 | |
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256 | #define D_NAME(entp) entp->d_name |
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257 | |
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258 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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259 | #if __FreeBSD__ || __NetBSD__ || __OpenBSD__ |
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260 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
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261 | #define D_INO(de) (de)->d_fileno |
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262 | #define D_NAMLEN(de) (de)->d_namlen |
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263 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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264 | #define D_INO(de) (de)->d_ino |
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265 | #endif |
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266 | |
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267 | #ifdef _D_EXACT_NAMLEN |
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268 | #undef D_NAMLEN |
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269 | #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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270 | #endif |
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271 | |
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272 | #ifdef _DIRENT_HAVE_D_TYPE |
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273 | #define D_TYPE(de) (de)->d_type |
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274 | #endif |
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275 | |
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276 | #ifndef EIO_STRUCT_DIRENT |
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277 | #define EIO_STRUCT_DIRENT struct dirent |
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278 | #endif |
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279 | |
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280 | #endif |
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281 | |
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282 | #if HAVE_UTIMES |
80 | # include <utime.h> |
283 | # include <utime.h> |
81 | # include <signal.h> |
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82 | # include <dirent.h> |
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83 | |
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84 | # ifndef EIO_STRUCT_DIRENT |
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85 | # define EIO_STRUCT_DIRENT struct dirent |
|
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86 | # endif |
284 | #endif |
87 | |
285 | |
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286 | #if HAVE_SYS_SYSCALL_H |
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287 | # include <sys/syscall.h> |
88 | #endif |
288 | #endif |
89 | |
289 | |
90 | #if HAVE_SENDFILE |
290 | #if HAVE_SENDFILE |
91 | # if __linux |
291 | # if __linux |
92 | # include <sys/sendfile.h> |
292 | # include <sys/sendfile.h> |
93 | # elif __freebsd |
293 | # elif __FreeBSD__ || defined __APPLE__ |
94 | # include <sys/socket.h> |
294 | # include <sys/socket.h> |
95 | # include <sys/uio.h> |
295 | # include <sys/uio.h> |
96 | # elif __hpux |
296 | # elif __hpux |
97 | # include <sys/socket.h> |
297 | # include <sys/socket.h> |
98 | # elif __solaris /* not yet */ |
298 | # elif __solaris |
99 | # include <sys/sendfile.h> |
299 | # include <sys/sendfile.h> |
100 | # else |
300 | # else |
101 | # error sendfile support requested but not available |
301 | # error sendfile support requested but not available |
102 | # endif |
302 | # endif |
103 | #endif |
303 | #endif |
104 | |
304 | |
105 | /* number of seconds after which an idle threads exit */ |
305 | #if HAVE_RENAMEAT2 |
106 | #define IDLE_TIMEOUT 10 |
306 | # include <sys/syscall.h> |
|
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307 | # include <linux/fs.h> |
|
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308 | #endif |
|
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309 | |
|
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310 | #ifndef D_TYPE |
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311 | # define D_TYPE(de) 0 |
|
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312 | #endif |
|
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313 | #ifndef D_INO |
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314 | # define D_INO(de) 0 |
|
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315 | #endif |
|
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316 | #ifndef D_NAMLEN |
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317 | # define D_NAMLEN(entp) strlen (D_NAME (entp)) |
|
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318 | #endif |
107 | |
319 | |
108 | /* used for struct dirent, AIX doesn't provide it */ |
320 | /* used for struct dirent, AIX doesn't provide it */ |
109 | #ifndef NAME_MAX |
321 | #ifndef NAME_MAX |
110 | # define NAME_MAX 4096 |
322 | # define NAME_MAX 4096 |
111 | #endif |
323 | #endif |
112 | |
324 | |
|
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325 | /* used for readlink etc. */ |
|
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326 | #ifndef PATH_MAX |
|
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327 | # define PATH_MAX 0 |
|
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328 | #endif |
|
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329 | |
|
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330 | #ifndef O_CLOEXEC |
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331 | #define O_CLOEXEC 0 |
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332 | #endif |
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333 | |
|
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334 | #ifndef O_NONBLOCK |
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335 | #define O_NONBLOCK 0 |
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336 | #endif |
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337 | |
|
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338 | #ifndef O_SEARCH |
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339 | #define O_SEARCH O_RDONLY |
|
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340 | #endif |
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341 | |
|
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342 | #ifndef O_DIRECTORY |
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343 | #define O_DIRECTORY 0 |
|
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344 | #endif |
|
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345 | |
|
|
346 | #ifndef EIO_PATH_MIN |
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347 | # define EIO_PATH_MIN 8160 |
|
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348 | #endif |
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349 | |
|
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350 | #define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX) |
|
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351 | |
113 | /* buffer size for various temporary buffers */ |
352 | /* buffer size for various temporary buffers */ |
114 | #define EIO_BUFSIZE 65536 |
353 | #define EIO_BUFSIZE 65536 |
115 | |
354 | |
116 | #define dBUF \ |
355 | #define dBUF \ |
117 | char *eio_buf; \ |
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118 | ETP_WORKER_LOCK (self); \ |
|
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119 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
356 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
120 | ETP_WORKER_UNLOCK (self); \ |
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121 | errno = ENOMEM; \ |
357 | errno = ENOMEM; \ |
122 | if (!eio_buf) \ |
358 | if (!eio_buf) \ |
123 | return -1; |
359 | return -1 |
124 | |
360 | |
125 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
361 | #define FUBd \ |
|
|
362 | free (eio_buf) |
126 | |
363 | |
127 | /*****************************************************************************/ |
364 | /*****************************************************************************/ |
128 | |
365 | |
129 | #if __GNUC__ >= 3 |
366 | struct etp_tmpbuf; |
130 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
367 | |
|
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368 | #if _POSIX_VERSION >= 200809L |
|
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369 | #define HAVE_AT 1 |
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370 | #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD) |
131 | #else |
371 | #else |
132 | # define expect(expr,value) (expr) |
372 | #define HAVE_AT 0 |
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373 | static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path); |
133 | #endif |
374 | #endif |
134 | |
375 | |
135 | #define expect_false(expr) expect ((expr) != 0, 0) |
376 | struct eio_pwd |
136 | #define expect_true(expr) expect ((expr) != 0, 1) |
377 | { |
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378 | #if HAVE_AT |
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379 | int fd; |
|
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380 | #endif |
|
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381 | int len; |
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382 | char str[1]; /* actually, a 0-terminated canonical path */ |
|
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383 | }; |
137 | |
384 | |
138 | /*****************************************************************************/ |
385 | /*****************************************************************************/ |
139 | |
386 | |
140 | #define ETP_PRI_MIN EIO_PRI_MIN |
387 | #define ETP_PRI_MIN EIO_PRI_MIN |
141 | #define ETP_PRI_MAX EIO_PRI_MAX |
388 | #define ETP_PRI_MAX EIO_PRI_MAX |
142 | |
389 | |
|
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390 | #define ETP_TYPE_QUIT -1 |
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391 | #define ETP_TYPE_GROUP EIO_GROUP |
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392 | |
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393 | static void eio_nop_callback (void) { } |
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394 | static void (*eio_want_poll_cb)(void) = eio_nop_callback; |
|
|
395 | static void (*eio_done_poll_cb)(void) = eio_nop_callback; |
|
|
396 | |
|
|
397 | #define ETP_WANT_POLL(pool) eio_want_poll_cb () |
|
|
398 | #define ETP_DONE_POLL(pool) eio_done_poll_cb () |
|
|
399 | |
143 | struct etp_worker; |
400 | struct etp_worker; |
144 | |
|
|
145 | #define ETP_REQ eio_req |
401 | #define ETP_REQ eio_req |
146 | #define ETP_DESTROY(req) eio_destroy (req) |
402 | #define ETP_DESTROY(req) eio_destroy (req) |
147 | static int eio_finish (eio_req *req); |
403 | static int eio_finish (eio_req *req); |
148 | #define ETP_FINISH(req) eio_finish (req) |
404 | #define ETP_FINISH(req) eio_finish (req) |
149 | static void eio_execute (struct etp_worker *self, eio_req *req); |
405 | static void eio_execute (struct etp_worker *self, eio_req *req); |
150 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
406 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk, req) |
151 | |
407 | |
152 | #define ETP_WORKER_CLEAR(req) \ |
408 | #include "etp.c" |
153 | if (wrk->dbuf) \ |
409 | |
154 | { \ |
410 | static struct etp_pool eio_pool; |
155 | free (wrk->dbuf); \ |
411 | #define EIO_POOL (&eio_pool) |
156 | wrk->dbuf = 0; \ |
|
|
157 | } \ |
|
|
158 | \ |
|
|
159 | if (wrk->dirp) \ |
|
|
160 | { \ |
|
|
161 | closedir (wrk->dirp); \ |
|
|
162 | wrk->dirp = 0; \ |
|
|
163 | } |
|
|
164 | #define ETP_WORKER_COMMON \ |
|
|
165 | void *dbuf; \ |
|
|
166 | DIR *dirp; |
|
|
167 | |
412 | |
168 | /*****************************************************************************/ |
413 | /*****************************************************************************/ |
169 | |
414 | |
170 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
|
|
171 | |
|
|
172 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
|
|
173 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
|
|
174 | { |
|
|
175 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
|
|
176 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
|
|
177 | } |
|
|
178 | |
|
|
179 | static unsigned int started, idle, wanted = 4; |
|
|
180 | |
|
|
181 | static void (*want_poll_cb) (void); |
|
|
182 | static void (*done_poll_cb) (void); |
|
|
183 | |
|
|
184 | static unsigned int max_poll_time; /* reslock */ |
|
|
185 | static unsigned int max_poll_reqs; /* reslock */ |
|
|
186 | |
|
|
187 | static volatile unsigned int nreqs; /* reqlock */ |
|
|
188 | static volatile unsigned int nready; /* reqlock */ |
|
|
189 | static volatile unsigned int npending; /* reqlock */ |
|
|
190 | static volatile unsigned int max_idle = 4; |
|
|
191 | |
|
|
192 | static mutex_t wrklock = X_MUTEX_INIT; |
|
|
193 | static mutex_t reslock = X_MUTEX_INIT; |
|
|
194 | static mutex_t reqlock = X_MUTEX_INIT; |
|
|
195 | static cond_t reqwait = X_COND_INIT; |
|
|
196 | |
|
|
197 | #if !HAVE_PREADWRITE |
|
|
198 | /* |
|
|
199 | * make our pread/pwrite emulation safe against themselves, but not against |
|
|
200 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
201 | * but that's your problem, not mine. |
|
|
202 | */ |
|
|
203 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
204 | #endif |
|
|
205 | |
|
|
206 | typedef struct etp_worker |
|
|
207 | { |
|
|
208 | /* locked by wrklock */ |
|
|
209 | struct etp_worker *prev, *next; |
|
|
210 | |
|
|
211 | thread_t tid; |
|
|
212 | |
|
|
213 | /* locked by reslock, reqlock or wrklock */ |
|
|
214 | ETP_REQ *req; /* currently processed request */ |
|
|
215 | |
|
|
216 | ETP_WORKER_COMMON |
|
|
217 | } etp_worker; |
|
|
218 | |
|
|
219 | static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
|
|
220 | |
|
|
221 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
|
|
222 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
|
|
223 | |
|
|
224 | /* worker threads management */ |
|
|
225 | |
|
|
226 | static void etp_worker_clear (etp_worker *wrk) |
|
|
227 | { |
|
|
228 | ETP_WORKER_CLEAR (wrk); |
|
|
229 | } |
|
|
230 | |
|
|
231 | static void etp_worker_free (etp_worker *wrk) |
|
|
232 | { |
|
|
233 | wrk->next->prev = wrk->prev; |
|
|
234 | wrk->prev->next = wrk->next; |
|
|
235 | |
|
|
236 | free (wrk); |
|
|
237 | } |
|
|
238 | |
|
|
239 | static unsigned int etp_nreqs (void) |
|
|
240 | { |
|
|
241 | int retval; |
|
|
242 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
243 | retval = nreqs; |
|
|
244 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
245 | return retval; |
|
|
246 | } |
|
|
247 | |
|
|
248 | static unsigned int etp_nready (void) |
|
|
249 | { |
|
|
250 | unsigned int retval; |
|
|
251 | |
|
|
252 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
253 | retval = nready; |
|
|
254 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
255 | |
|
|
256 | return retval; |
|
|
257 | } |
|
|
258 | |
|
|
259 | static unsigned int etp_npending (void) |
|
|
260 | { |
|
|
261 | unsigned int retval; |
|
|
262 | |
|
|
263 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
264 | retval = npending; |
|
|
265 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
266 | |
|
|
267 | return retval; |
|
|
268 | } |
|
|
269 | |
|
|
270 | static unsigned int etp_nthreads (void) |
|
|
271 | { |
|
|
272 | unsigned int retval; |
|
|
273 | |
|
|
274 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
275 | retval = started; |
|
|
276 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
277 | |
|
|
278 | return retval; |
|
|
279 | } |
|
|
280 | |
|
|
281 | /* |
|
|
282 | * a somewhat faster data structure might be nice, but |
|
|
283 | * with 8 priorities this actually needs <20 insns |
|
|
284 | * per shift, the most expensive operation. |
|
|
285 | */ |
|
|
286 | typedef struct { |
|
|
287 | ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ |
|
|
288 | int size; |
|
|
289 | } etp_reqq; |
|
|
290 | |
|
|
291 | static etp_reqq req_queue; |
|
|
292 | static etp_reqq res_queue; |
|
|
293 | |
|
|
294 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
|
|
295 | { |
|
|
296 | int pri = req->pri; |
|
|
297 | req->next = 0; |
|
|
298 | |
|
|
299 | if (q->qe[pri]) |
|
|
300 | { |
|
|
301 | q->qe[pri]->next = req; |
|
|
302 | q->qe[pri] = req; |
|
|
303 | } |
|
|
304 | else |
|
|
305 | q->qe[pri] = q->qs[pri] = req; |
|
|
306 | |
|
|
307 | return q->size++; |
|
|
308 | } |
|
|
309 | |
|
|
310 | static ETP_REQ *reqq_shift (etp_reqq *q) |
|
|
311 | { |
|
|
312 | int pri; |
|
|
313 | |
|
|
314 | if (!q->size) |
|
|
315 | return 0; |
|
|
316 | |
|
|
317 | --q->size; |
|
|
318 | |
|
|
319 | for (pri = ETP_NUM_PRI; pri--; ) |
|
|
320 | { |
|
|
321 | eio_req *req = q->qs[pri]; |
|
|
322 | |
|
|
323 | if (req) |
|
|
324 | { |
|
|
325 | if (!(q->qs[pri] = (eio_req *)req->next)) |
|
|
326 | q->qe[pri] = 0; |
|
|
327 | |
|
|
328 | return req; |
|
|
329 | } |
|
|
330 | } |
|
|
331 | |
|
|
332 | abort (); |
|
|
333 | } |
|
|
334 | |
|
|
335 | static void etp_atfork_prepare (void) |
|
|
336 | { |
|
|
337 | X_LOCK (wrklock); |
|
|
338 | X_LOCK (reqlock); |
|
|
339 | X_LOCK (reslock); |
|
|
340 | #if !HAVE_PREADWRITE |
|
|
341 | X_LOCK (preadwritelock); |
|
|
342 | #endif |
|
|
343 | } |
|
|
344 | |
|
|
345 | static void etp_atfork_parent (void) |
|
|
346 | { |
|
|
347 | #if !HAVE_PREADWRITE |
|
|
348 | X_UNLOCK (preadwritelock); |
|
|
349 | #endif |
|
|
350 | X_UNLOCK (reslock); |
|
|
351 | X_UNLOCK (reqlock); |
|
|
352 | X_UNLOCK (wrklock); |
|
|
353 | } |
|
|
354 | |
|
|
355 | static void etp_atfork_child (void) |
|
|
356 | { |
|
|
357 | ETP_REQ *prv; |
|
|
358 | |
|
|
359 | while ((prv = reqq_shift (&req_queue))) |
|
|
360 | ETP_DESTROY (prv); |
|
|
361 | |
|
|
362 | while ((prv = reqq_shift (&res_queue))) |
|
|
363 | ETP_DESTROY (prv); |
|
|
364 | |
|
|
365 | while (wrk_first.next != &wrk_first) |
|
|
366 | { |
|
|
367 | etp_worker *wrk = wrk_first.next; |
|
|
368 | |
|
|
369 | if (wrk->req) |
|
|
370 | ETP_DESTROY (wrk->req); |
|
|
371 | |
|
|
372 | etp_worker_clear (wrk); |
|
|
373 | etp_worker_free (wrk); |
|
|
374 | } |
|
|
375 | |
|
|
376 | started = 0; |
|
|
377 | idle = 0; |
|
|
378 | nreqs = 0; |
|
|
379 | nready = 0; |
|
|
380 | npending = 0; |
|
|
381 | |
|
|
382 | etp_atfork_parent (); |
|
|
383 | } |
|
|
384 | |
|
|
385 | static void |
415 | static void |
386 | etp_once_init (void) |
|
|
387 | { |
|
|
388 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
|
|
389 | } |
|
|
390 | |
|
|
391 | static int |
|
|
392 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
|
|
393 | { |
|
|
394 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
|
|
395 | |
|
|
396 | pthread_once (&doinit, etp_once_init); |
|
|
397 | |
|
|
398 | want_poll_cb = want_poll; |
|
|
399 | done_poll_cb = done_poll; |
|
|
400 | |
|
|
401 | return 0; |
|
|
402 | } |
|
|
403 | |
|
|
404 | X_THREAD_PROC (etp_proc); |
|
|
405 | |
|
|
406 | static void etp_start_thread (void) |
|
|
407 | { |
|
|
408 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
|
|
409 | |
|
|
410 | /*TODO*/ |
|
|
411 | assert (("unable to allocate worker thread data", wrk)); |
|
|
412 | |
|
|
413 | X_LOCK (wrklock); |
|
|
414 | |
|
|
415 | if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
|
|
416 | { |
|
|
417 | wrk->prev = &wrk_first; |
|
|
418 | wrk->next = wrk_first.next; |
|
|
419 | wrk_first.next->prev = wrk; |
|
|
420 | wrk_first.next = wrk; |
|
|
421 | ++started; |
|
|
422 | } |
|
|
423 | else |
|
|
424 | free (wrk); |
|
|
425 | |
|
|
426 | X_UNLOCK (wrklock); |
|
|
427 | } |
|
|
428 | |
|
|
429 | static void etp_maybe_start_thread (void) |
|
|
430 | { |
|
|
431 | if (expect_true (etp_nthreads () >= wanted)) |
|
|
432 | return; |
|
|
433 | |
|
|
434 | /* todo: maybe use idle here, but might be less exact */ |
|
|
435 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
|
|
436 | return; |
|
|
437 | |
|
|
438 | etp_start_thread (); |
|
|
439 | } |
|
|
440 | |
|
|
441 | static void etp_end_thread (void) |
|
|
442 | { |
|
|
443 | eio_req *req = calloc (1, sizeof (eio_req)); |
|
|
444 | |
|
|
445 | req->type = -1; |
|
|
446 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
447 | |
|
|
448 | X_LOCK (reqlock); |
|
|
449 | reqq_push (&req_queue, req); |
|
|
450 | X_COND_SIGNAL (reqwait); |
|
|
451 | X_UNLOCK (reqlock); |
|
|
452 | |
|
|
453 | X_LOCK (wrklock); |
|
|
454 | --started; |
|
|
455 | X_UNLOCK (wrklock); |
|
|
456 | } |
|
|
457 | |
|
|
458 | static int etp_poll (void) |
|
|
459 | { |
|
|
460 | unsigned int maxreqs; |
|
|
461 | unsigned int maxtime; |
|
|
462 | struct timeval tv_start, tv_now; |
|
|
463 | |
|
|
464 | X_LOCK (reslock); |
|
|
465 | maxreqs = max_poll_reqs; |
|
|
466 | maxtime = max_poll_time; |
|
|
467 | X_UNLOCK (reslock); |
|
|
468 | |
|
|
469 | if (maxtime) |
|
|
470 | gettimeofday (&tv_start, 0); |
|
|
471 | |
|
|
472 | for (;;) |
|
|
473 | { |
|
|
474 | ETP_REQ *req; |
|
|
475 | |
|
|
476 | etp_maybe_start_thread (); |
|
|
477 | |
|
|
478 | X_LOCK (reslock); |
|
|
479 | req = reqq_shift (&res_queue); |
|
|
480 | |
|
|
481 | if (req) |
|
|
482 | { |
|
|
483 | --npending; |
|
|
484 | |
|
|
485 | if (!res_queue.size && done_poll_cb) |
|
|
486 | done_poll_cb (); |
|
|
487 | } |
|
|
488 | |
|
|
489 | X_UNLOCK (reslock); |
|
|
490 | |
|
|
491 | if (!req) |
|
|
492 | return 0; |
|
|
493 | |
|
|
494 | X_LOCK (reqlock); |
|
|
495 | --nreqs; |
|
|
496 | X_UNLOCK (reqlock); |
|
|
497 | |
|
|
498 | if (expect_false (req->type == EIO_GROUP && req->size)) |
|
|
499 | { |
|
|
500 | req->int1 = 1; /* mark request as delayed */ |
|
|
501 | continue; |
|
|
502 | } |
|
|
503 | else |
|
|
504 | { |
|
|
505 | int res = ETP_FINISH (req); |
|
|
506 | if (expect_false (res)) |
|
|
507 | return res; |
|
|
508 | } |
|
|
509 | |
|
|
510 | if (expect_false (maxreqs && !--maxreqs)) |
|
|
511 | break; |
|
|
512 | |
|
|
513 | if (maxtime) |
|
|
514 | { |
|
|
515 | gettimeofday (&tv_now, 0); |
|
|
516 | |
|
|
517 | if (tvdiff (&tv_start, &tv_now) >= maxtime) |
|
|
518 | break; |
|
|
519 | } |
|
|
520 | } |
|
|
521 | |
|
|
522 | errno = EAGAIN; |
|
|
523 | return -1; |
|
|
524 | } |
|
|
525 | |
|
|
526 | static void etp_cancel (ETP_REQ *req) |
|
|
527 | { |
|
|
528 | X_LOCK (wrklock); |
|
|
529 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
530 | X_UNLOCK (wrklock); |
|
|
531 | |
|
|
532 | eio_grp_cancel (req); |
|
|
533 | } |
|
|
534 | |
|
|
535 | static void etp_submit (ETP_REQ *req) |
|
|
536 | { |
|
|
537 | req->pri -= ETP_PRI_MIN; |
|
|
538 | |
|
|
539 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
|
|
540 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
541 | |
|
|
542 | if (expect_false (req->type == EIO_GROUP)) |
|
|
543 | { |
|
|
544 | /* I hope this is worth it :/ */ |
|
|
545 | X_LOCK (reqlock); |
|
|
546 | ++nreqs; |
|
|
547 | X_UNLOCK (reqlock); |
|
|
548 | |
|
|
549 | X_LOCK (reslock); |
|
|
550 | |
|
|
551 | ++npending; |
|
|
552 | |
|
|
553 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
554 | want_poll_cb (); |
|
|
555 | |
|
|
556 | X_UNLOCK (reslock); |
|
|
557 | } |
|
|
558 | else |
|
|
559 | { |
|
|
560 | X_LOCK (reqlock); |
|
|
561 | ++nreqs; |
|
|
562 | ++nready; |
|
|
563 | reqq_push (&req_queue, req); |
|
|
564 | X_COND_SIGNAL (reqwait); |
|
|
565 | X_UNLOCK (reqlock); |
|
|
566 | |
|
|
567 | etp_maybe_start_thread (); |
|
|
568 | } |
|
|
569 | } |
|
|
570 | |
|
|
571 | static void etp_set_max_poll_time (double nseconds) |
|
|
572 | { |
|
|
573 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
574 | max_poll_time = nseconds; |
|
|
575 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
576 | } |
|
|
577 | |
|
|
578 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
|
|
579 | { |
|
|
580 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
581 | max_poll_reqs = maxreqs; |
|
|
582 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
583 | } |
|
|
584 | |
|
|
585 | static void etp_set_max_idle (unsigned int nthreads) |
|
|
586 | { |
|
|
587 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
588 | max_idle = nthreads <= 0 ? 1 : nthreads; |
|
|
589 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
590 | } |
|
|
591 | |
|
|
592 | static void etp_set_min_parallel (unsigned int nthreads) |
|
|
593 | { |
|
|
594 | if (wanted < nthreads) |
|
|
595 | wanted = nthreads; |
|
|
596 | } |
|
|
597 | |
|
|
598 | static void etp_set_max_parallel (unsigned int nthreads) |
|
|
599 | { |
|
|
600 | if (wanted > nthreads) |
|
|
601 | wanted = nthreads; |
|
|
602 | |
|
|
603 | while (started > wanted) |
|
|
604 | etp_end_thread (); |
|
|
605 | } |
|
|
606 | |
|
|
607 | /*****************************************************************************/ |
|
|
608 | |
|
|
609 | static void grp_try_feed (eio_req *grp) |
416 | grp_try_feed (eio_req *grp) |
610 | { |
417 | { |
611 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
418 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
612 | { |
419 | { |
613 | grp->flags &= ~EIO_FLAG_GROUPADD; |
420 | grp->flags &= ~ETP_FLAG_GROUPADD; |
614 | |
421 | |
615 | EIO_FEED (grp); |
422 | EIO_FEED (grp); |
616 | |
423 | |
617 | /* stop if no progress has been made */ |
424 | /* stop if no progress has been made */ |
618 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
425 | if (!(grp->flags & ETP_FLAG_GROUPADD)) |
619 | { |
426 | { |
620 | grp->feed = 0; |
427 | grp->feed = 0; |
621 | break; |
428 | break; |
622 | } |
429 | } |
623 | } |
430 | } |
624 | } |
431 | } |
625 | |
432 | |
|
|
433 | static int |
626 | static int grp_dec (eio_req *grp) |
434 | grp_dec (eio_req *grp) |
627 | { |
435 | { |
628 | --grp->size; |
436 | --grp->size; |
629 | |
437 | |
630 | /* call feeder, if applicable */ |
438 | /* call feeder, if applicable */ |
631 | grp_try_feed (grp); |
439 | grp_try_feed (grp); |
632 | |
440 | |
633 | /* finish, if done */ |
441 | /* finish, if done */ |
634 | if (!grp->size && grp->int1) |
442 | if (!grp->size && grp->flags & ETP_FLAG_DELAYED) |
635 | return eio_finish (grp); |
443 | return eio_finish (grp); |
636 | else |
444 | else |
637 | return 0; |
445 | return 0; |
638 | } |
446 | } |
639 | |
447 | |
|
|
448 | static void |
640 | void eio_destroy (eio_req *req) |
449 | eio_destroy (eio_req *req) |
641 | { |
450 | { |
642 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
451 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
643 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
452 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
644 | |
453 | |
645 | EIO_DESTROY (req); |
454 | EIO_DESTROY (req); |
646 | } |
455 | } |
647 | |
456 | |
|
|
457 | static int |
648 | static int eio_finish (eio_req *req) |
458 | eio_finish (eio_req *req) |
649 | { |
459 | { |
650 | int res = EIO_FINISH (req); |
460 | int res = EIO_FINISH (req); |
651 | |
461 | |
652 | if (req->grp) |
462 | if (req->grp) |
653 | { |
463 | { |
… | |
… | |
661 | if (grp->grp_first == req) |
471 | if (grp->grp_first == req) |
662 | grp->grp_first = req->grp_next; |
472 | grp->grp_first = req->grp_next; |
663 | |
473 | |
664 | res2 = grp_dec (grp); |
474 | res2 = grp_dec (grp); |
665 | |
475 | |
666 | if (!res && res2) |
476 | if (!res) |
667 | res = res2; |
477 | res = res2; |
668 | } |
478 | } |
669 | |
479 | |
670 | eio_destroy (req); |
480 | eio_destroy (req); |
671 | |
481 | |
672 | return res; |
482 | return res; |
673 | } |
483 | } |
674 | |
484 | |
|
|
485 | void |
675 | void eio_grp_cancel (eio_req *grp) |
486 | eio_grp_cancel (eio_req *grp) |
676 | { |
487 | { |
677 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
488 | etp_grp_cancel (EIO_POOL, grp); |
678 | eio_cancel (grp); |
|
|
679 | } |
489 | } |
680 | |
490 | |
|
|
491 | void |
681 | void eio_cancel (eio_req *req) |
492 | eio_cancel (eio_req *req) |
682 | { |
493 | { |
683 | etp_cancel (req); |
494 | etp_cancel (EIO_POOL, req); |
684 | } |
495 | } |
685 | |
496 | |
|
|
497 | void |
686 | void eio_submit (eio_req *req) |
498 | eio_submit (eio_req *req) |
687 | { |
499 | { |
688 | etp_submit (req); |
500 | etp_submit (EIO_POOL, req); |
689 | } |
501 | } |
690 | |
502 | |
691 | unsigned int eio_nreqs (void) |
503 | unsigned int |
|
|
504 | eio_nreqs (void) |
692 | { |
505 | { |
693 | return etp_nreqs (); |
506 | return etp_nreqs (EIO_POOL); |
694 | } |
507 | } |
695 | |
508 | |
696 | unsigned int eio_nready (void) |
509 | unsigned int |
|
|
510 | eio_nready (void) |
697 | { |
511 | { |
698 | return etp_nready (); |
512 | return etp_nready (EIO_POOL); |
699 | } |
513 | } |
700 | |
514 | |
701 | unsigned int eio_npending (void) |
515 | unsigned int |
|
|
516 | eio_npending (void) |
702 | { |
517 | { |
703 | return etp_npending (); |
518 | return etp_npending (EIO_POOL); |
704 | } |
519 | } |
705 | |
520 | |
706 | unsigned int eio_nthreads (void) |
521 | unsigned int ecb_cold |
|
|
522 | eio_nthreads (void) |
707 | { |
523 | { |
708 | return etp_nthreads (); |
524 | return etp_nthreads (EIO_POOL); |
709 | } |
525 | } |
710 | |
526 | |
|
|
527 | void ecb_cold |
711 | void eio_set_max_poll_time (double nseconds) |
528 | eio_set_max_poll_time (double nseconds) |
712 | { |
529 | { |
713 | etp_set_max_poll_time (nseconds); |
530 | etp_set_max_poll_time (EIO_POOL, nseconds); |
714 | } |
531 | } |
715 | |
532 | |
|
|
533 | void ecb_cold |
716 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
534 | eio_set_max_poll_reqs (unsigned int maxreqs) |
717 | { |
535 | { |
718 | etp_set_max_poll_reqs (maxreqs); |
536 | etp_set_max_poll_reqs (EIO_POOL, maxreqs); |
719 | } |
537 | } |
720 | |
538 | |
|
|
539 | void ecb_cold |
721 | void eio_set_max_idle (unsigned int nthreads) |
540 | eio_set_max_idle (unsigned int nthreads) |
722 | { |
541 | { |
723 | etp_set_max_idle (nthreads); |
542 | etp_set_max_idle (EIO_POOL, nthreads); |
724 | } |
543 | } |
725 | |
544 | |
|
|
545 | void ecb_cold |
|
|
546 | eio_set_idle_timeout (unsigned int seconds) |
|
|
547 | { |
|
|
548 | etp_set_idle_timeout (EIO_POOL, seconds); |
|
|
549 | } |
|
|
550 | |
|
|
551 | void ecb_cold |
726 | void eio_set_min_parallel (unsigned int nthreads) |
552 | eio_set_min_parallel (unsigned int nthreads) |
727 | { |
553 | { |
728 | etp_set_min_parallel (nthreads); |
554 | etp_set_min_parallel (EIO_POOL, nthreads); |
729 | } |
555 | } |
730 | |
556 | |
|
|
557 | void ecb_cold |
731 | void eio_set_max_parallel (unsigned int nthreads) |
558 | eio_set_max_parallel (unsigned int nthreads) |
732 | { |
559 | { |
733 | etp_set_max_parallel (nthreads); |
560 | etp_set_max_parallel (EIO_POOL, nthreads); |
734 | } |
561 | } |
735 | |
562 | |
736 | int eio_poll (void) |
563 | int eio_poll (void) |
737 | { |
564 | { |
738 | return etp_poll (); |
565 | return etp_poll (EIO_POOL); |
739 | } |
566 | } |
740 | |
567 | |
741 | /*****************************************************************************/ |
568 | /*****************************************************************************/ |
742 | /* work around various missing functions */ |
569 | /* work around various missing functions */ |
743 | |
570 | |
744 | #if !HAVE_PREADWRITE |
571 | #if HAVE_POSIX_CLOSE && !__linux |
745 | # undef pread |
572 | # define eio__close(fd) posix_close (fd, 0) |
746 | # undef pwrite |
573 | #else |
747 | # define pread eio__pread |
574 | # define eio__close(fd) close (fd) |
748 | # define pwrite eio__pwrite |
|
|
749 | |
|
|
750 | static ssize_t |
|
|
751 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
|
|
752 | { |
|
|
753 | ssize_t res; |
|
|
754 | off_t ooffset; |
|
|
755 | |
|
|
756 | X_LOCK (preadwritelock); |
|
|
757 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
758 | lseek (fd, offset, SEEK_SET); |
|
|
759 | res = read (fd, buf, count); |
|
|
760 | lseek (fd, ooffset, SEEK_SET); |
|
|
761 | X_UNLOCK (preadwritelock); |
|
|
762 | |
|
|
763 | return res; |
|
|
764 | } |
|
|
765 | |
|
|
766 | static ssize_t |
|
|
767 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
768 | { |
|
|
769 | ssize_t res; |
|
|
770 | off_t ooffset; |
|
|
771 | |
|
|
772 | X_LOCK (preadwritelock); |
|
|
773 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
774 | lseek (fd, offset, SEEK_SET); |
|
|
775 | res = write (fd, buf, count); |
|
|
776 | lseek (fd, ooffset, SEEK_SET); |
|
|
777 | X_UNLOCK (preadwritelock); |
|
|
778 | |
|
|
779 | return res; |
|
|
780 | } |
|
|
781 | #endif |
575 | #endif |
782 | |
576 | |
|
|
577 | /* close() without disturbing errno */ |
|
|
578 | static void |
|
|
579 | silent_close (int fd) |
|
|
580 | { |
|
|
581 | int saved_errno = errno; |
|
|
582 | eio__close (fd); |
|
|
583 | errno = saved_errno; |
|
|
584 | } |
|
|
585 | |
783 | #ifndef HAVE_FUTIMES |
586 | #ifndef HAVE_UTIMES |
784 | |
587 | |
785 | # undef utimes |
588 | # undef utimes |
786 | # undef futimes |
|
|
787 | # define utimes(path,times) eio__utimes (path, times) |
589 | # define utimes(path,times) eio__utimes (path, times) |
788 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
789 | |
590 | |
790 | static int |
591 | static int |
791 | eio__utimes (const char *filename, const struct timeval times[2]) |
592 | eio__utimes (const char *filename, const struct timeval times[2]) |
792 | { |
593 | { |
793 | if (times) |
594 | if (times) |
… | |
… | |
801 | } |
602 | } |
802 | else |
603 | else |
803 | return utime (filename, 0); |
604 | return utime (filename, 0); |
804 | } |
605 | } |
805 | |
606 | |
|
|
607 | #endif |
|
|
608 | |
|
|
609 | #ifndef HAVE_FUTIMES |
|
|
610 | |
|
|
611 | # undef futimes |
|
|
612 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
613 | |
|
|
614 | static int |
806 | static int eio__futimes (int fd, const struct timeval tv[2]) |
615 | eio__futimes (int fd, const struct timeval tv[2]) |
807 | { |
616 | { |
808 | errno = ENOSYS; |
617 | errno = ENOSYS; |
809 | return -1; |
618 | return -1; |
810 | } |
619 | } |
811 | |
620 | |
… | |
… | |
814 | #if !HAVE_FDATASYNC |
623 | #if !HAVE_FDATASYNC |
815 | # undef fdatasync |
624 | # undef fdatasync |
816 | # define fdatasync(fd) fsync (fd) |
625 | # define fdatasync(fd) fsync (fd) |
817 | #endif |
626 | #endif |
818 | |
627 | |
|
|
628 | static int |
|
|
629 | eio__syncfs (int fd) |
|
|
630 | { |
|
|
631 | int res; |
|
|
632 | |
|
|
633 | #if HAVE_SYS_SYNCFS |
|
|
634 | res = (int)syscall (__NR_syncfs, (int)(fd)); |
|
|
635 | #else |
|
|
636 | res = EIO_ENOSYS (); |
|
|
637 | #endif |
|
|
638 | |
|
|
639 | if (res < 0 && errno == ENOSYS && fd >= 0) |
|
|
640 | sync (); |
|
|
641 | |
|
|
642 | return res; |
|
|
643 | } |
|
|
644 | |
819 | /* sync_file_range always needs emulation */ |
645 | /* sync_file_range always needs emulation */ |
820 | int |
646 | static int |
821 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
647 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
822 | { |
648 | { |
823 | #if HAVE_SYNC_FILE_RANGE |
649 | #if HAVE_SYNC_FILE_RANGE |
824 | int res; |
650 | int res; |
825 | |
651 | |
… | |
… | |
838 | if (!res || errno != ENOSYS) |
664 | if (!res || errno != ENOSYS) |
839 | return res; |
665 | return res; |
840 | #endif |
666 | #endif |
841 | |
667 | |
842 | /* even though we could play tricks with the flags, it's better to always |
668 | /* even though we could play tricks with the flags, it's better to always |
843 | * call fdatasync, as thta matches the expectation of it's users best */ |
669 | * call fdatasync, as that matches the expectation of its users best */ |
844 | return fdatasync (fd); |
670 | return fdatasync (fd); |
|
|
671 | } |
|
|
672 | |
|
|
673 | static int |
|
|
674 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
675 | { |
|
|
676 | #if HAVE_LINUX_FALLOCATE |
|
|
677 | return fallocate (fd, mode, offset, len); |
|
|
678 | #else |
|
|
679 | return EIO_ENOSYS (); |
|
|
680 | #endif |
845 | } |
681 | } |
846 | |
682 | |
847 | #if !HAVE_READAHEAD |
683 | #if !HAVE_READAHEAD |
848 | # undef readahead |
684 | # undef readahead |
849 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
685 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
850 | |
686 | |
851 | static ssize_t |
687 | static eio_ssize_t |
852 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
688 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
853 | { |
689 | { |
854 | size_t todo = count; |
690 | size_t todo = count; |
855 | dBUF; |
691 | dBUF; |
856 | |
692 | |
… | |
… | |
861 | pread (fd, eio_buf, len, offset); |
697 | pread (fd, eio_buf, len, offset); |
862 | offset += len; |
698 | offset += len; |
863 | todo -= len; |
699 | todo -= len; |
864 | } |
700 | } |
865 | |
701 | |
866 | errno = 0; |
702 | FUBd; |
|
|
703 | |
|
|
704 | /* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */ |
|
|
705 | /* but not for e.g. EIO or eof, so we also never fail */ |
867 | return count; |
706 | return 0; |
868 | } |
707 | } |
869 | |
708 | |
870 | #endif |
709 | #endif |
871 | |
710 | |
872 | /* sendfile always needs emulation */ |
711 | /* sendfile always needs emulation */ |
873 | static ssize_t |
712 | static eio_ssize_t |
874 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
713 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count) |
875 | { |
714 | { |
|
|
715 | eio_ssize_t written = 0; |
876 | ssize_t res; |
716 | eio_ssize_t res; |
877 | |
717 | |
878 | if (!count) |
718 | if (!count) |
879 | return 0; |
719 | return 0; |
880 | |
720 | |
|
|
721 | for (;;) |
|
|
722 | { |
|
|
723 | #ifdef __APPLE__ |
|
|
724 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
725 | #endif |
881 | #if HAVE_SENDFILE |
726 | #if HAVE_SENDFILE |
882 | # if __linux |
727 | # if __linux |
|
|
728 | off_t soffset = offset; |
883 | res = sendfile (ofd, ifd, &offset, count); |
729 | res = sendfile (ofd, ifd, &soffset, count); |
884 | |
730 | |
885 | # elif __freebsd |
731 | # elif __FreeBSD__ |
886 | /* |
732 | /* |
887 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
733 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
888 | * wasted on making it similar to other I/O functions. |
734 | * wasted on making it similar to other I/O functions. |
889 | */ |
735 | */ |
890 | { |
|
|
891 | off_t sbytes; |
736 | off_t sbytes; |
892 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
737 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
893 | |
738 | |
894 | if (res < 0 && sbytes) |
739 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
895 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
740 | /* freebsd' sendfile will return 0 on success */ |
|
|
741 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
742 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
743 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
896 | res = sbytes; |
744 | res = sbytes; |
897 | } |
745 | #endif |
|
|
746 | |
|
|
747 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
748 | if (sbytes) |
|
|
749 | res = sbytes; |
|
|
750 | |
|
|
751 | # elif defined __APPLE__ |
|
|
752 | off_t sbytes = count; |
|
|
753 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
754 | |
|
|
755 | /* according to the manpage, sbytes is always valid */ |
|
|
756 | if (sbytes) |
|
|
757 | res = sbytes; |
898 | |
758 | |
899 | # elif __hpux |
759 | # elif __hpux |
900 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
760 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
901 | |
761 | |
902 | # elif __solaris |
762 | # elif __solaris |
903 | { |
|
|
904 | struct sendfilevec vec; |
763 | struct sendfilevec vec; |
905 | size_t sbytes; |
764 | size_t sbytes; |
906 | |
765 | |
907 | vec.sfv_fd = ifd; |
766 | vec.sfv_fd = ifd; |
908 | vec.sfv_flag = 0; |
767 | vec.sfv_flag = 0; |
909 | vec.sfv_off = offset; |
768 | vec.sfv_off = offset; |
910 | vec.sfv_len = count; |
769 | vec.sfv_len = count; |
911 | |
770 | |
912 | res = sendfilev (ofd, &vec, 1, &sbytes); |
771 | res = sendfilev (ofd, &vec, 1, &sbytes); |
913 | |
772 | |
914 | if (res < 0 && sbytes) |
773 | if (res < 0 && sbytes) |
915 | res = sbytes; |
774 | res = sbytes; |
916 | } |
|
|
917 | |
775 | |
918 | # endif |
776 | # endif |
|
|
777 | |
|
|
778 | #elif defined (_WIN32) && 0 |
|
|
779 | /* does not work, just for documentation of what would need to be done */ |
|
|
780 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
781 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
782 | /* has no way to get an independent handle to the same file description */ |
|
|
783 | HANDLE h = TO_SOCKET (ifd); |
|
|
784 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
785 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
786 | |
919 | #else |
787 | #else |
920 | res = -1; |
788 | res = EIO_ENOSYS (); |
921 | errno = ENOSYS; |
|
|
922 | #endif |
789 | #endif |
923 | |
790 | |
|
|
791 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
792 | if (res <= 128 * 1024 * 1024) |
|
|
793 | { |
|
|
794 | if (res > 0) |
|
|
795 | written += res; |
|
|
796 | |
|
|
797 | if (written) |
|
|
798 | return written; |
|
|
799 | |
|
|
800 | break; |
|
|
801 | } |
|
|
802 | else |
|
|
803 | { |
|
|
804 | /* if we requested more, then probably the kernel was lazy */ |
|
|
805 | written += res; |
|
|
806 | offset += res; |
|
|
807 | count -= res; |
|
|
808 | |
|
|
809 | if (!count) |
|
|
810 | return written; |
|
|
811 | } |
|
|
812 | } |
|
|
813 | |
924 | if (res < 0 |
814 | if (res < 0 |
925 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
815 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
816 | /* BSDs */ |
|
|
817 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
818 | || errno == ENOTSUP |
|
|
819 | #endif |
|
|
820 | #ifdef EOPNOTSUPP /* windows */ |
|
|
821 | || errno == EOPNOTSUPP /* BSDs */ |
|
|
822 | #endif |
926 | #if __solaris |
823 | #if __solaris |
927 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
824 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
928 | #endif |
825 | #endif |
929 | ) |
826 | ) |
930 | ) |
827 | ) |
… | |
… | |
934 | |
831 | |
935 | res = 0; |
832 | res = 0; |
936 | |
833 | |
937 | while (count) |
834 | while (count) |
938 | { |
835 | { |
939 | ssize_t cnt; |
836 | eio_ssize_t cnt; |
940 | |
837 | |
941 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
838 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
942 | |
839 | |
943 | if (cnt <= 0) |
840 | if (cnt <= 0) |
944 | { |
841 | { |
… | |
… | |
956 | |
853 | |
957 | offset += cnt; |
854 | offset += cnt; |
958 | res += cnt; |
855 | res += cnt; |
959 | count -= cnt; |
856 | count -= cnt; |
960 | } |
857 | } |
|
|
858 | |
|
|
859 | FUBd; |
961 | } |
860 | } |
962 | |
861 | |
963 | return res; |
862 | return res; |
|
|
863 | } |
|
|
864 | |
|
|
865 | #ifdef PAGESIZE |
|
|
866 | # define eio_pagesize() PAGESIZE |
|
|
867 | #else |
|
|
868 | static intptr_t |
|
|
869 | eio_pagesize (void) |
|
|
870 | { |
|
|
871 | static intptr_t page; |
|
|
872 | |
|
|
873 | if (!page) |
|
|
874 | page = sysconf (_SC_PAGESIZE); |
|
|
875 | |
|
|
876 | return page; |
|
|
877 | } |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | static void |
|
|
881 | eio_page_align (void **addr, size_t *length) |
|
|
882 | { |
|
|
883 | intptr_t mask = eio_pagesize () - 1; |
|
|
884 | |
|
|
885 | /* round down addr */ |
|
|
886 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
887 | |
|
|
888 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
889 | *length += adj; |
|
|
890 | |
|
|
891 | /* round up length */ |
|
|
892 | *length = (*length + mask) & ~mask; |
|
|
893 | } |
|
|
894 | |
|
|
895 | #if !_POSIX_MEMLOCK |
|
|
896 | # define eio__mlockall(a) EIO_ENOSYS () |
|
|
897 | #else |
|
|
898 | |
|
|
899 | static int |
|
|
900 | eio__mlockall (int flags) |
|
|
901 | { |
|
|
902 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
903 | extern int mallopt (int, int); |
|
|
904 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
905 | #endif |
|
|
906 | |
|
|
907 | #ifndef MCL_ONFAULT |
|
|
908 | if (flags & EIO_MCL_ONFAULT) |
|
|
909 | return EIO_ERRNO (EINVAL, -1); |
|
|
910 | #define MCL_ONFAULT 4 |
|
|
911 | #endif |
|
|
912 | |
|
|
913 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
914 | || EIO_MCL_FUTURE != MCL_FUTURE |
|
|
915 | || EIO_MCL_ONFAULT != MCL_ONFAULT) |
|
|
916 | { |
|
|
917 | flags = 0 |
|
|
918 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
919 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0) |
|
|
920 | | (flags & EIO_MCL_ONFAULT ? MCL_ONFAULT : 0) |
|
|
921 | ; |
|
|
922 | } |
|
|
923 | |
|
|
924 | return mlockall (flags); |
|
|
925 | } |
|
|
926 | #endif |
|
|
927 | |
|
|
928 | #if !_POSIX_MEMLOCK_RANGE |
|
|
929 | # define eio__mlock(a,b) EIO_ENOSYS () |
|
|
930 | #else |
|
|
931 | |
|
|
932 | static int |
|
|
933 | eio__mlock (void *addr, size_t length) |
|
|
934 | { |
|
|
935 | eio_page_align (&addr, &length); |
|
|
936 | |
|
|
937 | return mlock (addr, length); |
|
|
938 | } |
|
|
939 | |
|
|
940 | #endif |
|
|
941 | |
|
|
942 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
943 | # define eio__msync(a,b,c) EIO_ENOSYS () |
|
|
944 | #else |
|
|
945 | |
|
|
946 | static int |
|
|
947 | eio__msync (void *mem, size_t len, int flags) |
|
|
948 | { |
|
|
949 | eio_page_align (&mem, &len); |
|
|
950 | |
|
|
951 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
952 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
953 | || EIO_MS_SYNC != MS_SYNC) |
|
|
954 | { |
|
|
955 | flags = 0 |
|
|
956 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
957 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
958 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
959 | } |
|
|
960 | |
|
|
961 | return msync (mem, len, flags); |
|
|
962 | } |
|
|
963 | |
|
|
964 | #endif |
|
|
965 | |
|
|
966 | static int |
|
|
967 | eio__mtouch (eio_req *req) |
|
|
968 | { |
|
|
969 | void *mem = req->ptr2; |
|
|
970 | size_t len = req->size; |
|
|
971 | int flags = req->int1; |
|
|
972 | |
|
|
973 | eio_page_align (&mem, &len); |
|
|
974 | |
|
|
975 | { |
|
|
976 | intptr_t addr = (intptr_t)mem; |
|
|
977 | intptr_t end = addr + len; |
|
|
978 | intptr_t page = eio_pagesize (); |
|
|
979 | |
|
|
980 | if (addr < end) |
|
|
981 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
982 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
|
|
983 | else |
|
|
984 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
|
|
985 | } |
|
|
986 | |
|
|
987 | return 0; |
|
|
988 | } |
|
|
989 | |
|
|
990 | /*****************************************************************************/ |
|
|
991 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
992 | |
|
|
993 | static void |
|
|
994 | eio__lseek (eio_req *req) |
|
|
995 | { |
|
|
996 | /* this usually gets optimised away completely, or your compiler sucks, */ |
|
|
997 | /* or the whence constants really are not 0, 1, 2 */ |
|
|
998 | int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET |
|
|
999 | : req->int2 == EIO_SEEK_CUR ? SEEK_CUR |
|
|
1000 | : req->int2 == EIO_SEEK_END ? SEEK_END |
|
|
1001 | : req->int2; |
|
|
1002 | |
|
|
1003 | req->offs = lseek (req->int1, req->offs, whence); |
|
|
1004 | req->result = req->offs == (off_t)-1 ? -1 : 0; |
|
|
1005 | } |
|
|
1006 | |
|
|
1007 | /* result will always end up in tmpbuf, there is always space for adding a 0-byte */ |
|
|
1008 | static int |
|
|
1009 | eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
|
|
1010 | { |
|
|
1011 | char *res; |
|
|
1012 | const char *rel = path; |
|
|
1013 | char *tmp1, *tmp2; |
|
|
1014 | #if SYMLOOP_MAX > 32 |
|
|
1015 | int symlinks = SYMLOOP_MAX; |
|
|
1016 | #else |
|
|
1017 | int symlinks = 32; |
|
|
1018 | #endif |
|
|
1019 | |
|
|
1020 | errno = EINVAL; |
|
|
1021 | if (!rel) |
|
|
1022 | return -1; |
|
|
1023 | |
|
|
1024 | errno = ENOENT; |
|
|
1025 | if (!*rel) |
|
|
1026 | return -1; |
|
|
1027 | |
|
|
1028 | res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3); |
|
|
1029 | #ifdef _WIN32 |
|
|
1030 | if (_access (rel, 4) != 0) |
|
|
1031 | return -1; |
|
|
1032 | |
|
|
1033 | symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0); |
|
|
1034 | |
|
|
1035 | errno = ENAMETOOLONG; |
|
|
1036 | if (symlinks >= EIO_PATH_MAX * 3) |
|
|
1037 | return -1; |
|
|
1038 | |
|
|
1039 | errno = EIO; |
|
|
1040 | if (symlinks <= 0) |
|
|
1041 | return -1; |
|
|
1042 | |
|
|
1043 | return symlinks; |
|
|
1044 | |
|
|
1045 | #else |
|
|
1046 | tmp1 = res + EIO_PATH_MAX; |
|
|
1047 | tmp2 = tmp1 + EIO_PATH_MAX; |
|
|
1048 | |
|
|
1049 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1050 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1051 | /* on linux we may be able to ask the kernel */ |
|
|
1052 | { |
|
|
1053 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1054 | |
|
|
1055 | if (fd >= 0) |
|
|
1056 | { |
|
|
1057 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1058 | req->result = readlink (tmp1, res, EIO_PATH_MAX); |
|
|
1059 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1060 | eio__close (fd); |
|
|
1061 | |
|
|
1062 | if (req->result > 0) |
|
|
1063 | goto done; |
|
|
1064 | } |
|
|
1065 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1066 | return -1; |
|
|
1067 | } |
|
|
1068 | #endif |
|
|
1069 | #endif |
|
|
1070 | |
|
|
1071 | if (*rel != '/') |
|
|
1072 | { |
|
|
1073 | int len; |
|
|
1074 | |
|
|
1075 | errno = ENOENT; |
|
|
1076 | if (wd == EIO_INVALID_WD) |
|
|
1077 | return -1; |
|
|
1078 | |
|
|
1079 | if (wd == EIO_CWD) |
|
|
1080 | { |
|
|
1081 | if (!getcwd (res, EIO_PATH_MAX)) |
|
|
1082 | return -1; |
|
|
1083 | |
|
|
1084 | len = strlen (res); |
|
|
1085 | } |
|
|
1086 | else |
|
|
1087 | memcpy (res, wd->str, len = wd->len); |
|
|
1088 | |
|
|
1089 | if (res [1]) /* only use if not / */ |
|
|
1090 | res += len; |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | while (*rel) |
|
|
1094 | { |
|
|
1095 | eio_ssize_t len, linklen; |
|
|
1096 | const char *beg = rel; |
|
|
1097 | |
|
|
1098 | while (*rel && *rel != '/') |
|
|
1099 | ++rel; |
|
|
1100 | |
|
|
1101 | len = rel - beg; |
|
|
1102 | |
|
|
1103 | if (!len) /* skip slashes */ |
|
|
1104 | { |
|
|
1105 | ++rel; |
|
|
1106 | continue; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | if (beg [0] == '.') |
|
|
1110 | { |
|
|
1111 | if (len == 1) |
|
|
1112 | continue; /* . - nop */ |
|
|
1113 | |
|
|
1114 | if (beg [1] == '.' && len == 2) |
|
|
1115 | { |
|
|
1116 | /* .. - back up one component, if possible */ |
|
|
1117 | |
|
|
1118 | while (res != tmpbuf->ptr) |
|
|
1119 | if (*--res == '/') |
|
|
1120 | break; |
|
|
1121 | |
|
|
1122 | continue; |
|
|
1123 | } |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | errno = ENAMETOOLONG; |
|
|
1127 | if (res + 1 + len + 1 >= tmp1) |
|
|
1128 | return -1; |
|
|
1129 | |
|
|
1130 | /* copy one component */ |
|
|
1131 | *res = '/'; |
|
|
1132 | memcpy (res + 1, beg, len); |
|
|
1133 | |
|
|
1134 | /* zero-terminate, for readlink */ |
|
|
1135 | res [len + 1] = 0; |
|
|
1136 | |
|
|
1137 | /* now check if it's a symlink */ |
|
|
1138 | linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX); |
|
|
1139 | |
|
|
1140 | if (linklen < 0) |
|
|
1141 | { |
|
|
1142 | if (errno != EINVAL) |
|
|
1143 | return -1; |
|
|
1144 | |
|
|
1145 | /* it's a normal directory. hopefully */ |
|
|
1146 | res += len + 1; |
|
|
1147 | } |
|
|
1148 | else |
|
|
1149 | { |
|
|
1150 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1151 | int rellen = strlen (rel); |
|
|
1152 | |
|
|
1153 | errno = ENAMETOOLONG; |
|
|
1154 | if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */ |
|
|
1155 | return -1; |
|
|
1156 | |
|
|
1157 | errno = ELOOP; |
|
|
1158 | if (!--symlinks) |
|
|
1159 | return -1; |
|
|
1160 | |
|
|
1161 | if (*tmp1 == '/') |
|
|
1162 | res = tmpbuf->ptr; /* symlink resolves to an absolute path */ |
|
|
1163 | |
|
|
1164 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1165 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1166 | tmp2 [linklen] = '/'; |
|
|
1167 | memcpy (tmp2, tmp1, linklen); |
|
|
1168 | |
|
|
1169 | rel = tmp2; |
|
|
1170 | } |
|
|
1171 | } |
|
|
1172 | |
|
|
1173 | /* special case for the lone root path */ |
|
|
1174 | if (res == tmpbuf->ptr) |
|
|
1175 | *res++ = '/'; |
|
|
1176 | |
|
|
1177 | return res - (char *)tmpbuf->ptr; |
|
|
1178 | #endif |
|
|
1179 | } |
|
|
1180 | |
|
|
1181 | static signed char |
|
|
1182 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
|
|
1183 | { |
|
|
1184 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
|
|
1185 | : a->inode < b->inode ? -1 |
|
|
1186 | : a->inode > b->inode ? 1 |
|
|
1187 | : 0; |
|
|
1188 | } |
|
|
1189 | |
|
|
1190 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1191 | |
|
|
1192 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1193 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
|
|
1194 | |
|
|
1195 | static void |
|
|
1196 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
|
|
1197 | { |
|
|
1198 | unsigned char bits [9 + sizeof (eio_ino_t) * 8]; |
|
|
1199 | unsigned char *bit = bits; |
|
|
1200 | |
|
|
1201 | assert (CHAR_BIT == 8); |
|
|
1202 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1203 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1204 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1205 | |
|
|
1206 | if (size <= EIO_SORT_FAST) |
|
|
1207 | return; |
|
|
1208 | |
|
|
1209 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1210 | /* try to take endianness into account, as well as differences in eio_ino_t sizes */ |
|
|
1211 | /* inode_bits must contain all inodes ORed together */ |
|
|
1212 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1213 | { |
|
|
1214 | eio_ino_t endianness; |
|
|
1215 | int i, j; |
|
|
1216 | |
|
|
1217 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1218 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1219 | ((unsigned char *)&endianness)[i] = i; |
|
|
1220 | |
|
|
1221 | *bit++ = 0; |
|
|
1222 | |
|
|
1223 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1224 | { |
|
|
1225 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1226 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1227 | endianness >>= 8; |
|
|
1228 | |
|
|
1229 | for (j = 0; j < 8; ++j) |
|
|
1230 | if (inode_bits & (((eio_ino_t)1) << (i * 8 + j))) |
|
|
1231 | *bit++ = offs + j; |
|
|
1232 | } |
|
|
1233 | |
|
|
1234 | for (j = 0; j < 8; ++j) |
|
|
1235 | if (score_bits & (1 << j)) |
|
|
1236 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1237 | } |
|
|
1238 | |
|
|
1239 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1240 | { |
|
|
1241 | eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base; |
|
|
1242 | eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end; |
|
|
1243 | unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8]; |
|
|
1244 | int stk_idx = 0; |
|
|
1245 | |
|
|
1246 | base_stk [stk_idx] = dents; |
|
|
1247 | end_stk [stk_idx] = dents + size; |
|
|
1248 | bit_stk [stk_idx] = bit - 1; |
|
|
1249 | |
|
|
1250 | do |
|
|
1251 | { |
|
|
1252 | base = base_stk [stk_idx]; |
|
|
1253 | end = end_stk [stk_idx]; |
|
|
1254 | bit = bit_stk [stk_idx]; |
|
|
1255 | |
|
|
1256 | for (;;) |
|
|
1257 | { |
|
|
1258 | unsigned char O = *bit >> 3; |
|
|
1259 | unsigned char M = 1 << (*bit & 7); |
|
|
1260 | |
|
|
1261 | eio_dirent *a = base; |
|
|
1262 | eio_dirent *b = end; |
|
|
1263 | |
|
|
1264 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1265 | break; |
|
|
1266 | |
|
|
1267 | /* now bit-partition the array on the bit */ |
|
|
1268 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1269 | /* partition algos found in the literature */ |
|
|
1270 | do |
|
|
1271 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1272 | ++a; |
|
|
1273 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1274 | { |
|
|
1275 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1276 | ++a; |
|
|
1277 | } |
|
|
1278 | while (b > a); |
|
|
1279 | |
|
|
1280 | /* next bit, or stop, if no bits left in this path */ |
|
|
1281 | if (!*--bit) |
|
|
1282 | break; |
|
|
1283 | |
|
|
1284 | base_stk [stk_idx] = a; |
|
|
1285 | end_stk [stk_idx] = end; |
|
|
1286 | bit_stk [stk_idx] = bit; |
|
|
1287 | ++stk_idx; |
|
|
1288 | |
|
|
1289 | end = a; |
|
|
1290 | } |
|
|
1291 | } |
|
|
1292 | while (stk_idx--); |
|
|
1293 | } |
|
|
1294 | } |
|
|
1295 | |
|
|
1296 | static void |
|
|
1297 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1298 | { |
|
|
1299 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1300 | { |
|
|
1301 | int i; |
|
|
1302 | eio_dirent *min = dents; |
|
|
1303 | |
|
|
1304 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1305 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1306 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1307 | min = &dents [i]; |
|
|
1308 | |
|
|
1309 | /* swap elements 0 and j (minimum) */ |
|
|
1310 | { |
|
|
1311 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1312 | } |
|
|
1313 | } |
|
|
1314 | |
|
|
1315 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
|
|
1316 | { |
|
|
1317 | eio_dirent *i, *j; |
|
|
1318 | |
|
|
1319 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1320 | { |
|
|
1321 | eio_dirent value = *i; |
|
|
1322 | |
|
|
1323 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1324 | j [1] = j [0]; |
|
|
1325 | |
|
|
1326 | j [1] = value; |
|
|
1327 | } |
|
|
1328 | } |
|
|
1329 | } |
|
|
1330 | |
|
|
1331 | static void |
|
|
1332 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
|
|
1333 | { |
|
|
1334 | if (size <= 1) |
|
|
1335 | return; /* our insertion sort relies on size > 0 */ |
|
|
1336 | |
|
|
1337 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
|
|
1338 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1339 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
|
|
1340 | |
|
|
1341 | /* use an insertion sort at the end, or for small arrays, */ |
|
|
1342 | /* as insertion sort is more efficient for small partitions */ |
|
|
1343 | eio_dent_insertion_sort (dents, size); |
964 | } |
1344 | } |
965 | |
1345 | |
966 | /* read a full directory */ |
1346 | /* read a full directory */ |
967 | static void |
1347 | static void |
968 | eio__scandir (eio_req *req, etp_worker *self) |
1348 | eio__scandir (eio_req *req, etp_worker *self) |
969 | { |
1349 | { |
|
|
1350 | char *name, *names; |
|
|
1351 | int namesalloc = 4096 - sizeof (void *) * 4; |
|
|
1352 | int namesoffs = 0; |
|
|
1353 | int flags = req->int1; |
|
|
1354 | eio_dirent *dents = 0; |
|
|
1355 | int dentalloc = 128; |
|
|
1356 | int dentoffs = 0; |
|
|
1357 | eio_ino_t inode_bits = 0; |
|
|
1358 | #ifdef _WIN32 |
|
|
1359 | HANDLE dirp; |
|
|
1360 | WIN32_FIND_DATA entp; |
|
|
1361 | #else |
970 | DIR *dirp; |
1362 | DIR *dirp; |
971 | EIO_STRUCT_DIRENT *entp; |
1363 | EIO_STRUCT_DIRENT *entp; |
972 | char *name, *names; |
1364 | #endif |
973 | int memlen = 4096; |
|
|
974 | int memofs = 0; |
|
|
975 | int res = 0; |
|
|
976 | |
1365 | |
977 | X_LOCK (wrklock); |
1366 | req->result = -1; |
978 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
|
|
979 | self->dirp = dirp = opendir (req->ptr1); |
|
|
980 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
981 | req->ptr2 = names = malloc (memlen); |
|
|
982 | X_UNLOCK (wrklock); |
|
|
983 | |
1367 | |
984 | if (dirp && names) |
1368 | if (!(flags & EIO_READDIR_DENTS)) |
985 | for (;;) |
1369 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
|
|
1370 | |
|
|
1371 | #ifdef _WIN32 |
|
|
1372 | { |
|
|
1373 | int len = strlen ((const char *)req->ptr1); |
|
|
1374 | char *path = malloc (MAX_PATH); |
|
|
1375 | const char *fmt; |
|
|
1376 | const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1); |
|
|
1377 | |
|
|
1378 | if (!len) |
|
|
1379 | fmt = "./*"; |
|
|
1380 | else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\') |
|
|
1381 | fmt = "%s*"; |
|
|
1382 | else |
|
|
1383 | fmt = "%s/*"; |
|
|
1384 | |
|
|
1385 | _snprintf (path, MAX_PATH, fmt, reqpath); |
|
|
1386 | dirp = FindFirstFile (path, &entp); |
|
|
1387 | free (path); |
|
|
1388 | |
|
|
1389 | if (dirp == INVALID_HANDLE_VALUE) |
986 | { |
1390 | { |
|
|
1391 | /* should steal _dosmaperr */ |
|
|
1392 | switch (GetLastError ()) |
|
|
1393 | { |
|
|
1394 | case ERROR_FILE_NOT_FOUND: |
|
|
1395 | req->result = 0; |
|
|
1396 | break; |
|
|
1397 | |
|
|
1398 | case ERROR_INVALID_NAME: |
|
|
1399 | case ERROR_PATH_NOT_FOUND: |
|
|
1400 | case ERROR_NO_MORE_FILES: |
|
|
1401 | errno = ENOENT; |
|
|
1402 | break; |
|
|
1403 | |
|
|
1404 | case ERROR_NOT_ENOUGH_MEMORY: |
|
|
1405 | errno = ENOMEM; |
|
|
1406 | break; |
|
|
1407 | |
|
|
1408 | default: |
|
|
1409 | errno = EINVAL; |
|
|
1410 | break; |
|
|
1411 | } |
|
|
1412 | |
|
|
1413 | return; |
|
|
1414 | } |
|
|
1415 | } |
|
|
1416 | #else |
|
|
1417 | #if HAVE_AT |
|
|
1418 | { |
|
|
1419 | int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY | O_NONBLOCK); |
|
|
1420 | |
|
|
1421 | if (fd < 0) |
|
|
1422 | return; |
|
|
1423 | |
|
|
1424 | dirp = fdopendir (fd); |
|
|
1425 | |
|
|
1426 | if (!dirp) |
|
|
1427 | { |
|
|
1428 | silent_close (fd); |
|
|
1429 | return; |
|
|
1430 | } |
|
|
1431 | } |
|
|
1432 | #else |
|
|
1433 | dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1)); |
|
|
1434 | |
|
|
1435 | if (!dirp) |
|
|
1436 | return; |
|
|
1437 | #endif |
|
|
1438 | #endif |
|
|
1439 | |
|
|
1440 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1441 | free (req->ptr1); |
|
|
1442 | |
|
|
1443 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
|
|
1444 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
|
|
1445 | req->ptr2 = names = malloc (namesalloc); |
|
|
1446 | |
|
|
1447 | if (!names || (flags && !dents)) |
|
|
1448 | return; |
|
|
1449 | |
|
|
1450 | for (;;) |
|
|
1451 | { |
|
|
1452 | int done; |
|
|
1453 | |
|
|
1454 | #ifdef _WIN32 |
|
|
1455 | done = !dirp; |
|
|
1456 | #else |
987 | errno = 0; |
1457 | errno = 0; |
988 | entp = readdir (dirp); |
1458 | entp = readdir (dirp); |
|
|
1459 | done = !entp; |
|
|
1460 | #endif |
989 | |
1461 | |
|
|
1462 | if (done) |
|
|
1463 | { |
|
|
1464 | #ifndef _WIN32 |
|
|
1465 | int old_errno = errno; |
|
|
1466 | closedir (dirp); |
|
|
1467 | errno = old_errno; |
|
|
1468 | |
990 | if (!entp) |
1469 | if (errno) |
|
|
1470 | break; |
|
|
1471 | #endif |
|
|
1472 | |
|
|
1473 | /* sort etc. */ |
|
|
1474 | req->int1 = flags; |
|
|
1475 | req->result = dentoffs; |
|
|
1476 | |
|
|
1477 | if (flags & EIO_READDIR_STAT_ORDER) |
|
|
1478 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
|
|
1479 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1480 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1481 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1482 | else |
|
|
1483 | { |
|
|
1484 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1485 | eio_dirent *oth = dents + dentoffs; |
|
|
1486 | eio_dirent *dir = dents; |
|
|
1487 | |
|
|
1488 | /* now partition dirs to the front, and non-dirs to the back */ |
|
|
1489 | /* by walking from both sides and swapping if necessary */ |
|
|
1490 | while (oth > dir) |
|
|
1491 | { |
|
|
1492 | if (dir->type == EIO_DT_DIR) |
|
|
1493 | ++dir; |
|
|
1494 | else if ((--oth)->type == EIO_DT_DIR) |
|
|
1495 | { |
|
|
1496 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1497 | |
|
|
1498 | ++dir; |
|
|
1499 | } |
|
|
1500 | } |
|
|
1501 | |
|
|
1502 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1503 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1504 | } |
|
|
1505 | |
991 | break; |
1506 | break; |
|
|
1507 | } |
992 | |
1508 | |
993 | name = entp->d_name; |
1509 | /* now add the entry to our list(s) */ |
|
|
1510 | name = D_NAME (entp); |
994 | |
1511 | |
|
|
1512 | /* skip . and .. entries */ |
995 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1513 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
996 | { |
1514 | { |
997 | int len = strlen (name) + 1; |
1515 | int len = D_NAMLEN (entp) + 1; |
998 | |
1516 | |
999 | res++; |
1517 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1000 | |
|
|
1001 | while (memofs + len > memlen) |
|
|
1002 | { |
1518 | { |
1003 | memlen *= 2; |
1519 | namesalloc *= 2; |
1004 | X_LOCK (wrklock); |
|
|
1005 | req->ptr2 = names = realloc (names, memlen); |
1520 | req->ptr2 = names = realloc (names, namesalloc); |
1006 | X_UNLOCK (wrklock); |
|
|
1007 | |
1521 | |
1008 | if (!names) |
1522 | if (!names) |
|
|
1523 | break; |
|
|
1524 | } |
|
|
1525 | |
|
|
1526 | memcpy (names + namesoffs, name, len); |
|
|
1527 | |
|
|
1528 | if (dents) |
|
|
1529 | { |
|
|
1530 | struct eio_dirent *ent; |
|
|
1531 | |
|
|
1532 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1533 | { |
|
|
1534 | dentalloc *= 2; |
|
|
1535 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1536 | |
|
|
1537 | if (!dents) |
1009 | break; |
1538 | break; |
1010 | } |
1539 | } |
1011 | |
1540 | |
1012 | memcpy (names + memofs, name, len); |
1541 | ent = dents + dentoffs; |
1013 | memofs += len; |
1542 | |
|
|
1543 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1544 | ent->namelen = len - 1; |
|
|
1545 | ent->inode = D_INO (entp); |
|
|
1546 | |
|
|
1547 | inode_bits |= ent->inode; |
|
|
1548 | |
|
|
1549 | switch (D_TYPE (entp)) |
|
|
1550 | { |
|
|
1551 | default: |
|
|
1552 | ent->type = EIO_DT_UNKNOWN; |
|
|
1553 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1554 | break; |
|
|
1555 | |
|
|
1556 | #ifdef DT_FIFO |
|
|
1557 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1558 | #endif |
|
|
1559 | #ifdef DT_CHR |
|
|
1560 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1561 | #endif |
|
|
1562 | #ifdef DT_MPC |
|
|
1563 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1564 | #endif |
|
|
1565 | #ifdef DT_DIR |
|
|
1566 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1567 | #endif |
|
|
1568 | #ifdef DT_NAM |
|
|
1569 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1570 | #endif |
|
|
1571 | #ifdef DT_BLK |
|
|
1572 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1573 | #endif |
|
|
1574 | #ifdef DT_MPB |
|
|
1575 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1576 | #endif |
|
|
1577 | #ifdef DT_REG |
|
|
1578 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1579 | #endif |
|
|
1580 | #ifdef DT_NWK |
|
|
1581 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1582 | #endif |
|
|
1583 | #ifdef DT_CMP |
|
|
1584 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1585 | #endif |
|
|
1586 | #ifdef DT_LNK |
|
|
1587 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1588 | #endif |
|
|
1589 | #ifdef DT_SOCK |
|
|
1590 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1591 | #endif |
|
|
1592 | #ifdef DT_DOOR |
|
|
1593 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1594 | #endif |
|
|
1595 | #ifdef DT_WHT |
|
|
1596 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1597 | #endif |
|
|
1598 | } |
|
|
1599 | |
|
|
1600 | ent->score = 7; |
|
|
1601 | |
|
|
1602 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1603 | { |
|
|
1604 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1605 | { |
|
|
1606 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1607 | ent->score = 1; |
|
|
1608 | else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */ |
|
|
1609 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1610 | } |
|
|
1611 | else if (ent->type == EIO_DT_DIR) |
|
|
1612 | ent->score = 0; |
|
|
1613 | } |
1014 | } |
1614 | } |
|
|
1615 | |
|
|
1616 | namesoffs += len; |
|
|
1617 | ++dentoffs; |
1015 | } |
1618 | } |
1016 | |
1619 | |
1017 | if (errno) |
1620 | if (EIO_CANCELLED (req)) |
1018 | res = -1; |
1621 | { |
|
|
1622 | errno = ECANCELED; |
|
|
1623 | break; |
|
|
1624 | } |
|
|
1625 | |
|
|
1626 | #ifdef _WIN32 |
|
|
1627 | if (!FindNextFile (dirp, &entp)) |
|
|
1628 | { |
|
|
1629 | FindClose (dirp); |
|
|
1630 | dirp = 0; |
|
|
1631 | } |
|
|
1632 | #endif |
|
|
1633 | } |
|
|
1634 | } |
|
|
1635 | |
|
|
1636 | /*****************************************************************************/ |
|
|
1637 | /* working directory stuff */ |
|
|
1638 | /* various deficiencies in the posix 2008 api force us to */ |
|
|
1639 | /* keep the absolute path in string form at all times */ |
|
|
1640 | /* fuck yeah. */ |
|
|
1641 | |
|
|
1642 | #if !HAVE_AT |
|
|
1643 | |
|
|
1644 | /* a bit like realpath, but usually faster because it doesn'T have to return */ |
|
|
1645 | /* an absolute or canonical path */ |
|
|
1646 | static const char * |
|
|
1647 | wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
|
|
1648 | { |
|
|
1649 | if (!wd || *path == '/') |
|
|
1650 | return path; |
|
|
1651 | |
|
|
1652 | if (path [0] == '.' && !path [1]) |
|
|
1653 | return wd->str; |
|
|
1654 | |
1019 | |
1655 | { |
1020 | req->result = res; |
1656 | int l1 = wd->len; |
1021 | } |
1657 | int l2 = strlen (path); |
1022 | |
1658 | |
1023 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1659 | char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2); |
1024 | # undef msync |
1660 | |
1025 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
1661 | memcpy (res, wd->str, l1); |
|
|
1662 | res [l1] = '/'; |
|
|
1663 | memcpy (res + l1 + 1, path, l2 + 1); |
|
|
1664 | |
|
|
1665 | return res; |
|
|
1666 | } |
|
|
1667 | } |
|
|
1668 | |
|
|
1669 | #endif |
|
|
1670 | |
|
|
1671 | static eio_wd |
|
|
1672 | eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
|
|
1673 | { |
|
|
1674 | int fd; |
|
|
1675 | eio_wd res; |
|
|
1676 | int len = eio__realpath (tmpbuf, wd, path); |
|
|
1677 | |
|
|
1678 | if (len < 0) |
|
|
1679 | return EIO_INVALID_WD; |
|
|
1680 | |
|
|
1681 | #if HAVE_AT |
|
|
1682 | fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY | O_NONBLOCK); |
|
|
1683 | |
|
|
1684 | /* 0 is a valid fd, but we use it for EIO_CWD, so in the very unlikely */ |
|
|
1685 | /* case of fd 0 being available (almost certainly an a pplication bug) */ |
|
|
1686 | /* make sure we use another fd value */ |
|
|
1687 | #if EIO_CWD |
|
|
1688 | error EIO_CWD must be 0 |
1026 | #endif |
1689 | #endif |
|
|
1690 | if (ecb_expect_false (fd == 0)) |
|
|
1691 | { |
|
|
1692 | int fd2 = fcntl (fd, F_DUPFD_CLOEXEC ? F_DUPFD_CLOEXEC : F_DUPFD); |
|
|
1693 | fcntl (fd2, F_SETFD, FD_CLOEXEC); |
|
|
1694 | eio__close (fd); |
|
|
1695 | fd = fd2; |
|
|
1696 | } |
1027 | |
1697 | |
1028 | int |
1698 | if (fd < 0) |
1029 | eio__mtouch (void *mem, size_t len, int flags) |
1699 | return EIO_INVALID_WD; |
|
|
1700 | #endif |
|
|
1701 | |
|
|
1702 | res = malloc (sizeof (*res) + len); /* one extra 0-byte */ |
|
|
1703 | |
|
|
1704 | #if HAVE_AT |
|
|
1705 | res->fd = fd; |
|
|
1706 | #endif |
|
|
1707 | |
|
|
1708 | res->len = len; |
|
|
1709 | memcpy (res->str, tmpbuf->ptr, len); |
|
|
1710 | res->str [len] = 0; |
|
|
1711 | |
|
|
1712 | return res; |
|
|
1713 | } |
|
|
1714 | |
|
|
1715 | eio_wd |
|
|
1716 | eio_wd_open_sync (eio_wd wd, const char *path) |
1030 | { |
1717 | { |
1031 | intptr_t addr = (intptr_t)mem; |
1718 | struct etp_tmpbuf tmpbuf = { 0 }; |
1032 | intptr_t end = addr + len; |
1719 | wd = eio__wd_open_sync (&tmpbuf, wd, path); |
1033 | #ifdef PAGESIZE |
1720 | free (tmpbuf.ptr); |
1034 | const intptr_t page = PAGESIZE; |
1721 | |
|
|
1722 | return wd; |
|
|
1723 | } |
|
|
1724 | |
|
|
1725 | void |
|
|
1726 | eio_wd_close_sync (eio_wd wd) |
|
|
1727 | { |
|
|
1728 | if (wd != EIO_INVALID_WD && wd != EIO_CWD) |
|
|
1729 | { |
|
|
1730 | #if HAVE_AT |
|
|
1731 | eio__close (wd->fd); |
|
|
1732 | #endif |
|
|
1733 | free (wd); |
|
|
1734 | } |
|
|
1735 | } |
|
|
1736 | |
|
|
1737 | #if HAVE_AT |
|
|
1738 | |
|
|
1739 | static int |
|
|
1740 | eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags) |
|
|
1741 | { |
|
|
1742 | #if HAVE_RENAMEAT2 |
|
|
1743 | return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags); |
1035 | #else |
1744 | #else |
1036 | static intptr_t page; |
|
|
1037 | |
|
|
1038 | if (!page) |
1745 | if (flags) |
1039 | page = sysconf (_SC_PAGESIZE); |
1746 | return EIO_ENOSYS (); |
1040 | #endif |
|
|
1041 | |
1747 | |
1042 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
1748 | return renameat (olddirfd, oldpath, newdirfd, newpath); |
|
|
1749 | #endif |
|
|
1750 | } |
1043 | |
1751 | |
1044 | if (addr < end) |
1752 | /* they forgot these */ |
1045 | if (flags) /* modify */ |
|
|
1046 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
|
|
1047 | else |
|
|
1048 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1049 | |
1753 | |
|
|
1754 | static int |
|
|
1755 | eio__truncateat (int dirfd, const char *path, off_t length) |
|
|
1756 | { |
|
|
1757 | int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC | O_NONBLOCK); |
|
|
1758 | int res; |
|
|
1759 | |
|
|
1760 | if (fd < 0) |
|
|
1761 | return fd; |
|
|
1762 | |
|
|
1763 | res = ftruncate (fd, length); |
|
|
1764 | silent_close (fd); |
1050 | return 0; |
1765 | return res; |
1051 | } |
1766 | } |
|
|
1767 | |
|
|
1768 | static int |
|
|
1769 | eio__statvfsat (int dirfd, const char *path, struct statvfs *buf) |
|
|
1770 | { |
|
|
1771 | int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC | O_NONBLOCK); |
|
|
1772 | int res; |
|
|
1773 | |
|
|
1774 | if (fd < 0) |
|
|
1775 | return fd; |
|
|
1776 | |
|
|
1777 | res = fstatvfs (fd, buf); |
|
|
1778 | silent_close (fd); |
|
|
1779 | return res; |
|
|
1780 | } |
|
|
1781 | |
|
|
1782 | #endif |
1052 | |
1783 | |
1053 | /*****************************************************************************/ |
1784 | /*****************************************************************************/ |
1054 | |
1785 | |
1055 | #define ALLOC(len) \ |
1786 | #define ALLOC(len) \ |
1056 | if (!req->ptr2) \ |
1787 | if (!req->ptr2) \ |
1057 | { \ |
1788 | { \ |
1058 | X_LOCK (wrklock); \ |
1789 | X_LOCK (EIO_POOL->wrklock); \ |
1059 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
1790 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
1060 | X_UNLOCK (wrklock); \ |
1791 | X_UNLOCK (EIO_POOL->wrklock); \ |
1061 | req->ptr2 = malloc (len); \ |
1792 | req->ptr2 = malloc (len); \ |
1062 | if (!req->ptr2) \ |
1793 | if (!req->ptr2) \ |
1063 | { \ |
1794 | { \ |
1064 | errno = ENOMEM; \ |
1795 | errno = ENOMEM; \ |
1065 | req->result = -1; \ |
1796 | req->result = -1; \ |
1066 | break; \ |
1797 | goto alloc_fail; \ |
1067 | } \ |
1798 | } \ |
1068 | } |
1799 | } |
1069 | |
1800 | |
1070 | X_THREAD_PROC (etp_proc) |
1801 | /*****************************************************************************/ |
1071 | { |
|
|
1072 | ETP_REQ *req; |
|
|
1073 | struct timespec ts; |
|
|
1074 | etp_worker *self = (etp_worker *)thr_arg; |
|
|
1075 | |
1802 | |
1076 | /* try to distribute timeouts somewhat randomly */ |
1803 | static void |
1077 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1804 | eio__slurp (int fd, eio_req *req) |
|
|
1805 | { |
|
|
1806 | req->result = fd; |
1078 | |
1807 | |
1079 | for (;;) |
1808 | if (fd < 0) |
|
|
1809 | return; |
|
|
1810 | |
|
|
1811 | if (req->offs < 0 || !req->size) /* do we need the size? */ |
1080 | { |
1812 | { |
1081 | X_LOCK (reqlock); |
1813 | off_t size = lseek (fd, 0, SEEK_END); |
1082 | |
1814 | |
1083 | for (;;) |
|
|
1084 | { |
|
|
1085 | self->req = req = reqq_shift (&req_queue); |
|
|
1086 | |
|
|
1087 | if (req) |
|
|
1088 | break; |
|
|
1089 | |
|
|
1090 | ++idle; |
|
|
1091 | |
|
|
1092 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
|
|
1093 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1094 | { |
|
|
1095 | if (idle > max_idle) |
|
|
1096 | { |
|
|
1097 | --idle; |
|
|
1098 | X_UNLOCK (reqlock); |
|
|
1099 | X_LOCK (wrklock); |
|
|
1100 | --started; |
|
|
1101 | X_UNLOCK (wrklock); |
|
|
1102 | goto quit; |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1106 | X_COND_WAIT (reqwait, reqlock); |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | --idle; |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | --nready; |
|
|
1113 | |
|
|
1114 | X_UNLOCK (reqlock); |
|
|
1115 | |
|
|
1116 | if (req->type < 0) |
1815 | if (req->offs < 0) |
1117 | goto quit; |
1816 | req->offs += size; |
1118 | |
1817 | |
1119 | if (!EIO_CANCELLED (req)) |
1818 | if (!req->size) |
1120 | ETP_EXECUTE (self, req); |
1819 | req->size = size - req->offs; |
1121 | |
|
|
1122 | X_LOCK (reslock); |
|
|
1123 | |
|
|
1124 | ++npending; |
|
|
1125 | |
|
|
1126 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
1127 | want_poll_cb (); |
|
|
1128 | |
|
|
1129 | self->req = 0; |
|
|
1130 | etp_worker_clear (self); |
|
|
1131 | |
|
|
1132 | X_UNLOCK (reslock); |
|
|
1133 | } |
1820 | } |
1134 | |
1821 | |
1135 | quit: |
1822 | ALLOC (req->size); |
1136 | X_LOCK (wrklock); |
1823 | req->result = pread (fd, req->ptr2, req->size, req->offs); |
1137 | etp_worker_free (self); |
|
|
1138 | X_UNLOCK (wrklock); |
|
|
1139 | |
1824 | |
1140 | return 0; |
1825 | silent_close (fd); |
1141 | } |
|
|
1142 | |
1826 | |
1143 | /*****************************************************************************/ |
1827 | alloc_fail: |
|
|
1828 | ; |
|
|
1829 | } |
1144 | |
1830 | |
|
|
1831 | int ecb_cold |
1145 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1832 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1146 | { |
1833 | { |
1147 | return etp_init (want_poll, done_poll); |
1834 | eio_want_poll_cb = want_poll; |
1148 | } |
1835 | eio_done_poll_cb = done_poll; |
1149 | |
1836 | |
|
|
1837 | return etp_init (EIO_POOL, 0, 0, 0); |
|
|
1838 | } |
|
|
1839 | |
|
|
1840 | ecb_inline void |
1150 | static void eio_api_destroy (eio_req *req) |
1841 | eio_api_destroy (eio_req *req) |
1151 | { |
1842 | { |
1152 | free (req); |
1843 | free (req); |
1153 | } |
1844 | } |
1154 | |
1845 | |
1155 | #define REQ(rtype) \ |
1846 | #define REQ(rtype) \ |
1156 | eio_req *req; \ |
1847 | eio_req *req; \ |
1157 | \ |
1848 | \ |
1158 | req = (eio_req *)calloc (1, sizeof *req); \ |
1849 | req = (eio_req *)calloc (1, sizeof *req); \ |
1159 | if (!req) \ |
1850 | if (!req) \ |
1160 | return 0; \ |
1851 | return 0; \ |
… | |
… | |
1174 | { \ |
1865 | { \ |
1175 | eio_api_destroy (req); \ |
1866 | eio_api_destroy (req); \ |
1176 | return 0; \ |
1867 | return 0; \ |
1177 | } |
1868 | } |
1178 | |
1869 | |
|
|
1870 | #define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)]) |
|
|
1871 | |
|
|
1872 | static void |
1179 | static void eio_execute (etp_worker *self, eio_req *req) |
1873 | eio_execute (etp_worker *self, eio_req *req) |
1180 | { |
1874 | { |
1181 | errno = 0; |
1875 | #if HAVE_AT |
|
|
1876 | int dirfd; |
|
|
1877 | #else |
|
|
1878 | const char *path; |
|
|
1879 | #endif |
|
|
1880 | |
|
|
1881 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
1882 | { |
|
|
1883 | req->result = -1; |
|
|
1884 | req->errorno = ECANCELED; |
|
|
1885 | return; |
|
|
1886 | } |
|
|
1887 | |
|
|
1888 | if (ecb_expect_false (req->wd == EIO_INVALID_WD)) |
|
|
1889 | { |
|
|
1890 | req->result = -1; |
|
|
1891 | req->errorno = ENOENT; |
|
|
1892 | return; |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | if (req->type >= EIO_OPEN) |
|
|
1896 | { |
|
|
1897 | #if HAVE_AT |
|
|
1898 | dirfd = WD2FD (req->wd); |
|
|
1899 | #else |
|
|
1900 | path = wd_expand (&self->tmpbuf, req->wd, req->ptr1); |
|
|
1901 | #endif |
|
|
1902 | } |
1182 | |
1903 | |
1183 | switch (req->type) |
1904 | switch (req->type) |
1184 | { |
1905 | { |
|
|
1906 | case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1); |
|
|
1907 | req->result = req->wd == EIO_INVALID_WD ? -1 : 0; |
|
|
1908 | break; |
|
|
1909 | case EIO_WD_CLOSE: req->result = 0; |
|
|
1910 | eio_wd_close_sync (req->wd); break; |
|
|
1911 | |
|
|
1912 | case EIO_SEEK: eio__lseek (req); break; |
1185 | case EIO_READ: ALLOC (req->size); |
1913 | case EIO_READ: ALLOC (req->size); |
1186 | req->result = req->offs >= 0 |
1914 | req->result = req->offs >= 0 |
1187 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1915 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1188 | : read (req->int1, req->ptr2, req->size); break; |
1916 | : read (req->int1, req->ptr2, req->size); break; |
1189 | case EIO_WRITE: req->result = req->offs >= 0 |
1917 | case EIO_WRITE: req->result = req->offs >= 0 |
1190 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1918 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1191 | : write (req->int1, req->ptr2, req->size); break; |
1919 | : write (req->int1, req->ptr2, req->size); break; |
1192 | |
1920 | |
|
|
1921 | case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break; |
|
|
1922 | case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break; |
|
|
1923 | |
1193 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1924 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1194 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; |
1925 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
|
|
1926 | |
|
|
1927 | #if HAVE_AT |
1195 | |
1928 | |
1196 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1929 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1197 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1930 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break; |
1198 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1931 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1199 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1932 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break; |
1200 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1201 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1202 | |
|
|
1203 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1933 | case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break; |
1204 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
|
|
1205 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1934 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
1206 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
|
|
1207 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
1935 | case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break; |
1208 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
|
|
1209 | |
|
|
1210 | case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
1936 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
1211 | case EIO_CLOSE: req->result = close (req->int1); break; |
1937 | case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break; |
1212 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
1938 | |
1213 | case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
1939 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
1214 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1940 | case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */ |
|
|
1941 | req->result = req->wd && SINGLEDOT (req->ptr1) |
|
|
1942 | ? rmdir (req->wd->str) |
|
|
1943 | : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
1215 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1944 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
1216 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1945 | case EIO_RENAME: req->result = eio__renameat2 ( |
|
|
1946 | dirfd, |
|
|
1947 | /* complications arise because "." cannot be renamed, so we might have to expand */ |
|
|
1948 | req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1, |
|
|
1949 | WD2FD ((eio_wd)req->int3), |
|
|
1950 | req->ptr2, |
|
|
1951 | req->int2 |
|
|
1952 | ); |
|
|
1953 | break; |
1217 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1954 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
1218 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1955 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
1219 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1956 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1220 | |
1957 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1958 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1221 | case EIO_READLINK: ALLOC (NAME_MAX); |
1959 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
1222 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1960 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX); |
1223 | |
1961 | if (req->result == EIO_PATH_MAX) |
1224 | case EIO_SYNC: req->result = 0; sync (); break; |
1962 | { |
1225 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1963 | req->result = -1; |
1226 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1964 | errno = ENAMETOOLONG; |
1227 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
1965 | } |
1228 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1966 | break; |
1229 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
1230 | |
|
|
1231 | case EIO_READDIR: eio__scandir (req, self); break; |
|
|
1232 | |
|
|
1233 | case EIO_BUSY: |
1967 | case EIO_UTIME: |
1234 | #ifdef _WIN32 |
1968 | case EIO_FUTIME: |
1235 | Sleep (req->nv1 * 1000.); |
1969 | { |
|
|
1970 | struct timespec ts[2]; |
|
|
1971 | struct timespec *times; |
|
|
1972 | |
|
|
1973 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
1974 | { |
|
|
1975 | ts[0].tv_sec = req->nv1; |
|
|
1976 | ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9; |
|
|
1977 | ts[1].tv_sec = req->nv2; |
|
|
1978 | ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9; |
|
|
1979 | |
|
|
1980 | times = ts; |
|
|
1981 | } |
|
|
1982 | else |
|
|
1983 | times = 0; |
|
|
1984 | |
|
|
1985 | req->result = req->type == EIO_FUTIME |
|
|
1986 | ? futimens (req->int1, times) |
|
|
1987 | : utimensat (dirfd, req->ptr1, times, 0); |
|
|
1988 | } |
|
|
1989 | break; |
|
|
1990 | |
1236 | #else |
1991 | #else |
1237 | { |
|
|
1238 | struct timeval tv; |
|
|
1239 | |
1992 | |
1240 | tv.tv_sec = req->nv1; |
1993 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1241 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1994 | req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1995 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1996 | req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1997 | case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break; |
|
|
1998 | case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break; |
|
|
1999 | case EIO_TRUNCATE: req->result = truncate (path , req->offs); break; |
|
|
2000 | case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break; |
|
|
2001 | case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break; |
1242 | |
2002 | |
1243 | req->result = select (0, 0, 0, 0, &tv); |
2003 | case EIO_UNLINK: req->result = unlink (path ); break; |
1244 | } |
2004 | case EIO_RMDIR: req->result = rmdir (path ); break; |
1245 | #endif |
2005 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
1246 | break; |
2006 | case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break; |
|
|
2007 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
|
|
2008 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
|
|
2009 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
2010 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2011 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2012 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
2013 | req->result = readlink (path, req->ptr2, EIO_PATH_MAX); |
|
|
2014 | if (req->result == EIO_PATH_MAX) |
|
|
2015 | { |
|
|
2016 | req->result = -1; |
|
|
2017 | errno = ENAMETOOLONG; |
|
|
2018 | } |
|
|
2019 | break; |
1247 | |
2020 | |
1248 | case EIO_UTIME: |
2021 | case EIO_UTIME: |
1249 | case EIO_FUTIME: |
2022 | case EIO_FUTIME: |
1250 | { |
2023 | { |
1251 | struct timeval tv[2]; |
2024 | struct timeval tv[2]; |
1252 | struct timeval *times; |
2025 | struct timeval *times; |
1253 | |
2026 | |
1254 | if (req->nv1 != -1. || req->nv2 != -1.) |
2027 | if (req->nv1 != -1. || req->nv2 != -1.) |
1255 | { |
2028 | { |
1256 | tv[0].tv_sec = req->nv1; |
2029 | tv[0].tv_sec = req->nv1; |
1257 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
2030 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6; |
1258 | tv[1].tv_sec = req->nv2; |
2031 | tv[1].tv_sec = req->nv2; |
1259 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
2032 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6; |
1260 | |
2033 | |
1261 | times = tv; |
2034 | times = tv; |
1262 | } |
2035 | } |
1263 | else |
2036 | else |
1264 | times = 0; |
2037 | times = 0; |
1265 | |
|
|
1266 | |
2038 | |
1267 | req->result = req->type == EIO_FUTIME |
2039 | req->result = req->type == EIO_FUTIME |
1268 | ? futimes (req->int1, times) |
2040 | ? futimes (req->int1, times) |
1269 | : utimes (req->ptr1, times); |
2041 | : utimes (req->ptr1, times); |
1270 | } |
2042 | } |
1271 | break; |
2043 | break; |
1272 | |
2044 | |
|
|
2045 | #endif |
|
|
2046 | |
|
|
2047 | case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1))) |
|
|
2048 | { |
|
|
2049 | ALLOC (req->result); |
|
|
2050 | memcpy (req->ptr2, self->tmpbuf.ptr, req->result); |
|
|
2051 | } |
|
|
2052 | break; |
|
|
2053 | |
|
|
2054 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
2055 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
2056 | |
|
|
2057 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2058 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2059 | |
|
|
2060 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
|
|
2061 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
|
|
2062 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
|
|
2063 | |
|
|
2064 | case EIO_CLOSE: req->result = eio__close (req->int1); break; |
|
|
2065 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
|
|
2066 | case EIO_SYNC: req->result = 0; sync (); break; |
|
|
2067 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
|
|
2068 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
2069 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
|
|
2070 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
2071 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
2072 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
|
|
2073 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
2074 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
|
|
2075 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
|
|
2076 | |
|
|
2077 | case EIO_READDIR: eio__scandir (req, self); break; |
|
|
2078 | |
|
|
2079 | case EIO_BUSY: |
|
|
2080 | #ifdef _WIN32 |
|
|
2081 | Sleep (req->nv1 * 1e3); |
|
|
2082 | #else |
|
|
2083 | { |
|
|
2084 | struct timeval tv; |
|
|
2085 | |
|
|
2086 | tv.tv_sec = req->nv1; |
|
|
2087 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
|
|
2088 | |
|
|
2089 | req->result = select (0, 0, 0, 0, &tv); |
|
|
2090 | } |
|
|
2091 | #endif |
|
|
2092 | break; |
|
|
2093 | |
|
|
2094 | #if 0 |
1273 | case EIO_GROUP: |
2095 | case EIO_GROUP: |
1274 | abort (); /* handled in eio_request */ |
2096 | abort (); /* handled in eio_request */ |
|
|
2097 | #endif |
1275 | |
2098 | |
1276 | case EIO_NOP: |
2099 | case EIO_NOP: |
1277 | req->result = 0; |
2100 | req->result = 0; |
1278 | break; |
2101 | break; |
1279 | |
2102 | |
1280 | case EIO_CUSTOM: |
2103 | case EIO_CUSTOM: |
1281 | ((void (*)(eio_req *))req->feed) (req); |
2104 | req->feed (req); |
1282 | break; |
2105 | break; |
1283 | |
2106 | |
1284 | default: |
2107 | default: |
1285 | req->result = -1; |
2108 | req->result = EIO_ENOSYS (); |
1286 | break; |
2109 | break; |
1287 | } |
2110 | } |
1288 | |
2111 | |
|
|
2112 | alloc_fail: |
1289 | req->errorno = errno; |
2113 | req->errorno = errno; |
1290 | } |
2114 | } |
1291 | |
2115 | |
1292 | #ifndef EIO_NO_WRAPPERS |
2116 | #ifndef EIO_NO_WRAPPERS |
1293 | |
2117 | |
|
|
2118 | eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data) |
|
|
2119 | { |
|
|
2120 | REQ (EIO_WD_OPEN); PATH; SEND; |
|
|
2121 | } |
|
|
2122 | |
|
|
2123 | eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data) |
|
|
2124 | { |
|
|
2125 | REQ (EIO_WD_CLOSE); req->wd = wd; SEND; |
|
|
2126 | } |
|
|
2127 | |
1294 | eio_req *eio_nop (int pri, eio_cb cb, void *data) |
2128 | eio_req *eio_nop (int pri, eio_cb cb, void *data) |
1295 | { |
2129 | { |
1296 | REQ (EIO_NOP); SEND; |
2130 | REQ (EIO_NOP); SEND; |
1297 | } |
2131 | } |
1298 | |
2132 | |
… | |
… | |
1314 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
2148 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1315 | { |
2149 | { |
1316 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
2150 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1317 | } |
2151 | } |
1318 | |
2152 | |
|
|
2153 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
|
|
2154 | { |
|
|
2155 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
|
|
2156 | } |
|
|
2157 | |
|
|
2158 | eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2159 | { |
|
|
2160 | REQ (EIO_SYNCFS); req->int1 = fd; SEND; |
|
|
2161 | } |
|
|
2162 | |
|
|
2163 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
2164 | { |
|
|
2165 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
2166 | } |
|
|
2167 | |
1319 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
2168 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1320 | { |
2169 | { |
1321 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
2170 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1322 | } |
2171 | } |
1323 | |
2172 | |
1324 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
2173 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
1325 | { |
2174 | { |
1326 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
2175 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
1327 | } |
2176 | } |
1328 | |
2177 | |
1329 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
2178 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
1330 | { |
2179 | { |
1331 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
2180 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
2181 | } |
|
|
2182 | |
|
|
2183 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
|
|
2184 | { |
|
|
2185 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
1332 | } |
2186 | } |
1333 | |
2187 | |
1334 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
2188 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
1335 | { |
2189 | { |
1336 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
2190 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
… | |
… | |
1339 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
2193 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
1340 | { |
2194 | { |
1341 | REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
2195 | REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
1342 | } |
2196 | } |
1343 | |
2197 | |
|
|
2198 | eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data) |
|
|
2199 | { |
|
|
2200 | REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND; |
|
|
2201 | } |
|
|
2202 | |
1344 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2203 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
1345 | { |
2204 | { |
1346 | REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
2205 | REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
1347 | } |
2206 | } |
1348 | |
2207 | |
1349 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2208 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
1350 | { |
2209 | { |
1351 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
2210 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
1352 | } |
2211 | } |
1353 | |
2212 | |
|
|
2213 | eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data) |
|
|
2214 | { |
|
|
2215 | REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND; |
|
|
2216 | } |
|
|
2217 | |
|
|
2218 | eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data) |
|
|
2219 | { |
|
|
2220 | REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND; |
|
|
2221 | } |
|
|
2222 | |
1354 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2223 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1355 | { |
2224 | { |
1356 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2225 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1357 | } |
2226 | } |
1358 | |
2227 | |
|
|
2228 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2229 | { |
|
|
2230 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
|
|
2231 | } |
|
|
2232 | |
1359 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
2233 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1360 | { |
2234 | { |
1361 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
2235 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1362 | } |
2236 | } |
1363 | |
2237 | |
… | |
… | |
1369 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
2243 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1370 | { |
2244 | { |
1371 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2245 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1372 | } |
2246 | } |
1373 | |
2247 | |
1374 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2248 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1375 | { |
2249 | { |
1376 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2250 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1377 | } |
2251 | } |
1378 | |
2252 | |
1379 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
2253 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
… | |
… | |
1399 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
2273 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1400 | { |
2274 | { |
1401 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
2275 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1402 | } |
2276 | } |
1403 | |
2277 | |
1404 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2278 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1405 | { |
2279 | { |
1406 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2280 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1407 | } |
2281 | } |
1408 | |
2282 | |
1409 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
2283 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
… | |
… | |
1425 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2299 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1426 | { |
2300 | { |
1427 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2301 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
1428 | } |
2302 | } |
1429 | |
2303 | |
|
|
2304 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2305 | { |
|
|
2306 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2307 | } |
|
|
2308 | |
1430 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2309 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1431 | { |
2310 | { |
1432 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2311 | return eio__1path (EIO_STAT, path, pri, cb, data); |
1433 | } |
2312 | } |
1434 | |
2313 | |
1435 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
2314 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1436 | { |
2315 | { |
1437 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
2316 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1438 | } |
2317 | } |
1439 | |
2318 | |
|
|
2319 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2320 | { |
|
|
2321 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2322 | } |
|
|
2323 | |
1440 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
2324 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1441 | { |
2325 | { |
1442 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
2326 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1443 | } |
2327 | } |
1444 | |
2328 | |
1445 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
2329 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1446 | { |
2330 | { |
1447 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
2331 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1448 | } |
2332 | } |
1449 | |
2333 | |
1450 | eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) |
2334 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
1451 | { |
2335 | { |
1452 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
2336 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1453 | } |
2337 | } |
1454 | |
2338 | |
1455 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
2339 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1456 | { |
2340 | { |
1457 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
2341 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1458 | } |
2342 | } |
1459 | |
2343 | |
1460 | static eio_req * |
2344 | static eio_req * |
1461 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2345 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1462 | { |
2346 | { |
… | |
… | |
1486 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2370 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1487 | { |
2371 | { |
1488 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2372 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1489 | } |
2373 | } |
1490 | |
2374 | |
|
|
2375 | eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
|
|
2376 | { |
|
|
2377 | REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
2378 | } |
|
|
2379 | |
1491 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2380 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
1492 | { |
2381 | { |
1493 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
2382 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1494 | } |
2383 | } |
1495 | |
2384 | |
1496 | #endif |
2385 | #endif |
1497 | |
2386 | |
1498 | eio_req *eio_grp (eio_cb cb, void *data) |
2387 | eio_req *eio_grp (eio_cb cb, void *data) |
… | |
… | |
1507 | #undef SEND |
2396 | #undef SEND |
1508 | |
2397 | |
1509 | /*****************************************************************************/ |
2398 | /*****************************************************************************/ |
1510 | /* grp functions */ |
2399 | /* grp functions */ |
1511 | |
2400 | |
|
|
2401 | void |
1512 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2402 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1513 | { |
2403 | { |
1514 | grp->int2 = limit; |
2404 | grp->int2 = limit; |
1515 | grp->feed = feed; |
2405 | grp->feed = feed; |
1516 | |
2406 | |
1517 | grp_try_feed (grp); |
2407 | grp_try_feed (grp); |
1518 | } |
2408 | } |
1519 | |
2409 | |
|
|
2410 | void |
1520 | void eio_grp_limit (eio_req *grp, int limit) |
2411 | eio_grp_limit (eio_req *grp, int limit) |
1521 | { |
2412 | { |
1522 | grp->int2 = limit; |
2413 | grp->int2 = limit; |
1523 | |
2414 | |
1524 | grp_try_feed (grp); |
2415 | grp_try_feed (grp); |
1525 | } |
2416 | } |
1526 | |
2417 | |
|
|
2418 | void |
1527 | void eio_grp_add (eio_req *grp, eio_req *req) |
2419 | eio_grp_add (eio_req *grp, eio_req *req) |
1528 | { |
2420 | { |
1529 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2421 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
1530 | |
2422 | |
1531 | grp->flags |= EIO_FLAG_GROUPADD; |
2423 | grp->flags |= ETP_FLAG_GROUPADD; |
1532 | |
2424 | |
1533 | ++grp->size; |
2425 | ++grp->size; |
1534 | req->grp = grp; |
2426 | req->grp = grp; |
1535 | |
2427 | |
1536 | req->grp_prev = 0; |
2428 | req->grp_prev = 0; |
… | |
… | |
1543 | } |
2435 | } |
1544 | |
2436 | |
1545 | /*****************************************************************************/ |
2437 | /*****************************************************************************/ |
1546 | /* misc garbage */ |
2438 | /* misc garbage */ |
1547 | |
2439 | |
|
|
2440 | eio_ssize_t |
1548 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2441 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1549 | { |
2442 | { |
1550 | etp_worker wrk; |
|
|
1551 | |
|
|
1552 | wrk.dbuf = 0; |
|
|
1553 | |
|
|
1554 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
2443 | return eio__sendfile (ofd, ifd, offset, count); |
1555 | |
|
|
1556 | if (wrk.dbuf) |
|
|
1557 | free (wrk.dbuf); |
|
|
1558 | } |
2444 | } |
1559 | |
2445 | |
|
|
2446 | int eio_mlockall_sync (int flags) |
|
|
2447 | { |
|
|
2448 | return eio__mlockall (flags); |
|
|
2449 | } |
|
|
2450 | |