… | |
… | |
54 | #include <stdlib.h> |
54 | #include <stdlib.h> |
55 | #include <string.h> |
55 | #include <string.h> |
56 | #include <errno.h> |
56 | #include <errno.h> |
57 | #include <sys/types.h> |
57 | #include <sys/types.h> |
58 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
59 | #include <sys/statvfs.h> |
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60 | #include <limits.h> |
59 | #include <limits.h> |
61 | #include <fcntl.h> |
60 | #include <fcntl.h> |
62 | #include <assert.h> |
61 | #include <assert.h> |
63 | |
62 | |
64 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
63 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
65 | /* intptr_t only comes form stdint.h, says idiot openbsd coder */ |
64 | /* intptr_t only comes from stdint.h, says idiot openbsd coder */ |
66 | #if HAVE_STDINT_H |
65 | #if HAVE_STDINT_H |
67 | # include <stdint.h> |
66 | # include <stdint.h> |
68 | #endif |
67 | #endif |
69 | |
68 | |
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69 | #ifndef ECANCELED |
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70 | # define ECANCELED EDOM |
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71 | #endif |
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72 | #ifndef ELOOP |
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73 | # define ELOOP EDOM |
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74 | #endif |
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75 | |
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76 | #if !defined(ENOTSOCK) && defined(WSAENOTSOCK) |
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77 | # define ENOTSOCK WSAENOTSOCK |
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78 | #endif |
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79 | |
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80 | static void eio_destroy (eio_req *req); |
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81 | |
70 | #ifndef EIO_FINISH |
82 | #ifndef EIO_FINISH |
71 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
83 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
72 | #endif |
84 | #endif |
73 | |
85 | |
74 | #ifndef EIO_DESTROY |
86 | #ifndef EIO_DESTROY |
… | |
… | |
77 | |
89 | |
78 | #ifndef EIO_FEED |
90 | #ifndef EIO_FEED |
79 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
91 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
80 | #endif |
92 | #endif |
81 | |
93 | |
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94 | #ifndef EIO_FD_TO_WIN32_HANDLE |
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95 | # define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
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96 | #endif |
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97 | #ifndef EIO_WIN32_HANDLE_TO_FD |
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98 | # define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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99 | #endif |
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100 | |
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101 | #define EIO_ERRNO(errval,retval) ((errno = errval), retval) |
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102 | |
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103 | #define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1) |
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104 | |
82 | #ifdef _WIN32 |
105 | #ifdef _WIN32 |
83 | |
106 | |
84 | /*doh*/ |
107 | #undef PAGESIZE |
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108 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
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109 | |
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110 | /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */ |
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111 | |
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112 | #ifdef EIO_STRUCT_STATI64 |
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113 | /* look at perl's non-sloppy stat */ |
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114 | #define stat(path,buf) _stati64 (path,buf) |
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115 | #define fstat(fd,buf) _fstati64 (fd,buf) |
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116 | #endif |
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117 | #define lstat(path,buf) stat (path,buf) |
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118 | #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
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119 | #define mkdir(path,mode) _mkdir (path) |
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120 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
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121 | |
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122 | #define chmod(path,mode) _chmod (path, mode) |
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123 | #define dup(fd) _dup (fd) |
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124 | #define dup2(fd1,fd2) _dup2 (fd1, fd2) |
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125 | |
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126 | #define fchmod(fd,mode) EIO_ENOSYS () |
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127 | #define chown(path,uid,gid) EIO_ENOSYS () |
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128 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
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129 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
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130 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
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131 | #define mknod(path,mode,dev) EIO_ENOSYS () |
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132 | #define sync() EIO_ENOSYS () |
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133 | #define readlink(path,buf,s) EIO_ENOSYS () |
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134 | #define statvfs(path,buf) EIO_ENOSYS () |
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135 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
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136 | |
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137 | /* rename() uses MoveFile, which fails to overwrite */ |
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138 | #define rename(old,neu) eio__rename (old, neu) |
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139 | |
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140 | static int |
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141 | eio__rename (const char *old, const char *neu) |
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142 | { |
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143 | if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING)) |
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144 | return 0; |
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145 | |
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146 | /* should steal _dosmaperr */ |
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147 | switch (GetLastError ()) |
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148 | { |
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149 | case ERROR_FILE_NOT_FOUND: |
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150 | case ERROR_PATH_NOT_FOUND: |
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151 | case ERROR_INVALID_DRIVE: |
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152 | case ERROR_NO_MORE_FILES: |
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153 | case ERROR_BAD_NETPATH: |
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154 | case ERROR_BAD_NET_NAME: |
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155 | case ERROR_BAD_PATHNAME: |
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156 | case ERROR_FILENAME_EXCED_RANGE: |
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157 | errno = ENOENT; |
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158 | break; |
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159 | |
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160 | default: |
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161 | errno = EACCES; |
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162 | break; |
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163 | } |
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164 | |
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165 | return -1; |
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166 | } |
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167 | |
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168 | /* we could even stat and see if it exists */ |
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169 | static int |
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170 | symlink (const char *old, const char *neu) |
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171 | { |
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172 | #if WINVER >= 0x0600 |
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173 | if (CreateSymbolicLink (neu, old, 1)) |
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174 | return 0; |
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175 | |
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176 | if (CreateSymbolicLink (neu, old, 0)) |
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177 | return 0; |
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178 | #endif |
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179 | |
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180 | return EIO_ERRNO (ENOENT, -1); |
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181 | } |
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182 | |
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183 | /* POSIX API only */ |
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184 | #define CreateHardLink(neu,old,flags) 0 |
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185 | #define CreateSymbolicLink(neu,old,flags) 0 |
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186 | |
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187 | struct statvfs |
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188 | { |
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189 | int dummy; |
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190 | }; |
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191 | |
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192 | #define DT_DIR EIO_DT_DIR |
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193 | #define DT_REG EIO_DT_REG |
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194 | #define D_NAME(entp) entp.cFileName |
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195 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
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196 | |
85 | #else |
197 | #else |
86 | |
198 | |
87 | # include <sys/time.h> |
199 | #include <sys/time.h> |
88 | # include <sys/select.h> |
200 | #include <sys/select.h> |
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201 | #include <sys/statvfs.h> |
89 | # include <unistd.h> |
202 | #include <unistd.h> |
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203 | #include <signal.h> |
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204 | #include <dirent.h> |
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205 | |
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206 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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207 | #include <sys/mman.h> |
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208 | #endif |
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209 | |
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210 | #define D_NAME(entp) entp->d_name |
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211 | |
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212 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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213 | #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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214 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
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215 | #define D_INO(de) (de)->d_fileno |
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216 | #define D_NAMLEN(de) (de)->d_namlen |
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217 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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218 | #define D_INO(de) (de)->d_ino |
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219 | #endif |
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220 | |
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221 | #ifdef _D_EXACT_NAMLEN |
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222 | #undef D_NAMLEN |
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223 | #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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224 | #endif |
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225 | |
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226 | #ifdef _DIRENT_HAVE_D_TYPE |
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227 | #define D_TYPE(de) (de)->d_type |
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228 | #endif |
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229 | |
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230 | #ifndef EIO_STRUCT_DIRENT |
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231 | #define EIO_STRUCT_DIRENT struct dirent |
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232 | #endif |
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233 | |
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234 | #endif |
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235 | |
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236 | #if HAVE_UTIMES |
90 | # include <utime.h> |
237 | # include <utime.h> |
91 | # include <signal.h> |
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92 | # include <dirent.h> |
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93 | |
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94 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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95 | # include <sys/mman.h> |
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96 | #endif |
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97 | |
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98 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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99 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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100 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
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101 | # define D_INO(de) (de)->d_fileno |
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102 | # define D_NAMLEN(de) (de)->d_namlen |
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103 | # elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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104 | # define D_INO(de) (de)->d_ino |
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105 | # endif |
238 | #endif |
106 | |
239 | |
107 | #ifdef _D_EXACT_NAMLEN |
240 | #if HAVE_SYS_SYSCALL_H |
108 | # undef D_NAMLEN |
241 | # include <sys/syscall.h> |
109 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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110 | #endif |
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111 | |
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112 | # ifdef _DIRENT_HAVE_D_TYPE |
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113 | # define D_TYPE(de) (de)->d_type |
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114 | # endif |
242 | #endif |
115 | |
243 | |
116 | # ifndef EIO_STRUCT_DIRENT |
244 | #if HAVE_SYS_PRCTL_H |
117 | # define EIO_STRUCT_DIRENT struct dirent |
245 | # include <sys/prctl.h> |
118 | # endif |
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119 | |
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120 | #endif |
246 | #endif |
121 | |
247 | |
122 | #if HAVE_SENDFILE |
248 | #if HAVE_SENDFILE |
123 | # if __linux |
249 | # if __linux |
124 | # include <sys/sendfile.h> |
250 | # include <sys/sendfile.h> |
… | |
… | |
139 | #endif |
265 | #endif |
140 | #ifndef D_INO |
266 | #ifndef D_INO |
141 | # define D_INO(de) 0 |
267 | # define D_INO(de) 0 |
142 | #endif |
268 | #endif |
143 | #ifndef D_NAMLEN |
269 | #ifndef D_NAMLEN |
144 | # define D_NAMLEN(de) strlen ((de)->d_name) |
270 | # define D_NAMLEN(entp) strlen (D_NAME (entp)) |
145 | #endif |
271 | #endif |
146 | |
272 | |
147 | /* used for struct dirent, AIX doesn't provide it */ |
273 | /* used for struct dirent, AIX doesn't provide it */ |
148 | #ifndef NAME_MAX |
274 | #ifndef NAME_MAX |
149 | # define NAME_MAX 4096 |
275 | # define NAME_MAX 4096 |
… | |
… | |
156 | |
282 | |
157 | /* buffer size for various temporary buffers */ |
283 | /* buffer size for various temporary buffers */ |
158 | #define EIO_BUFSIZE 65536 |
284 | #define EIO_BUFSIZE 65536 |
159 | |
285 | |
160 | #define dBUF \ |
286 | #define dBUF \ |
161 | char *eio_buf; \ |
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162 | ETP_WORKER_LOCK (self); \ |
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163 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
287 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
164 | ETP_WORKER_UNLOCK (self); \ |
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165 | errno = ENOMEM; \ |
288 | errno = ENOMEM; \ |
166 | if (!eio_buf) \ |
289 | if (!eio_buf) \ |
167 | return -1; |
290 | return -1 |
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291 | |
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292 | #define FUBd \ |
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293 | free (eio_buf) |
168 | |
294 | |
169 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
295 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
170 | |
296 | |
171 | #define ETP_PRI_MIN EIO_PRI_MIN |
297 | #define ETP_PRI_MIN EIO_PRI_MIN |
172 | #define ETP_PRI_MAX EIO_PRI_MAX |
298 | #define ETP_PRI_MAX EIO_PRI_MAX |
… | |
… | |
178 | static int eio_finish (eio_req *req); |
304 | static int eio_finish (eio_req *req); |
179 | #define ETP_FINISH(req) eio_finish (req) |
305 | #define ETP_FINISH(req) eio_finish (req) |
180 | static void eio_execute (struct etp_worker *self, eio_req *req); |
306 | static void eio_execute (struct etp_worker *self, eio_req *req); |
181 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
307 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
182 | |
308 | |
183 | #define ETP_WORKER_CLEAR(req) \ |
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184 | if (wrk->dbuf) \ |
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185 | { \ |
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186 | free (wrk->dbuf); \ |
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187 | wrk->dbuf = 0; \ |
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188 | } \ |
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189 | \ |
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190 | if (wrk->dirp) \ |
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191 | { \ |
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192 | closedir (wrk->dirp); \ |
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193 | wrk->dirp = 0; \ |
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194 | } |
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195 | |
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196 | #define ETP_WORKER_COMMON \ |
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197 | void *dbuf; \ |
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198 | DIR *dirp; |
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199 | |
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200 | /*****************************************************************************/ |
309 | /*****************************************************************************/ |
201 | |
310 | |
202 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
311 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
203 | |
312 | |
204 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
313 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
… | |
… | |
215 | static void (*done_poll_cb) (void); |
324 | static void (*done_poll_cb) (void); |
216 | |
325 | |
217 | static unsigned int max_poll_time; /* reslock */ |
326 | static unsigned int max_poll_time; /* reslock */ |
218 | static unsigned int max_poll_reqs; /* reslock */ |
327 | static unsigned int max_poll_reqs; /* reslock */ |
219 | |
328 | |
220 | static volatile unsigned int nreqs; /* reqlock */ |
329 | static unsigned int nreqs; /* reqlock */ |
221 | static volatile unsigned int nready; /* reqlock */ |
330 | static unsigned int nready; /* reqlock */ |
222 | static volatile unsigned int npending; /* reqlock */ |
331 | static unsigned int npending; /* reqlock */ |
223 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
332 | static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
224 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
333 | static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
225 | |
334 | |
226 | static xmutex_t wrklock; |
335 | static xmutex_t wrklock; |
227 | static xmutex_t reslock; |
336 | static xmutex_t reslock; |
228 | static xmutex_t reqlock; |
337 | static xmutex_t reqlock; |
229 | static xcond_t reqwait; |
338 | static xcond_t reqwait; |
… | |
… | |
232 | /* |
341 | /* |
233 | * make our pread/pwrite emulation safe against themselves, but not against |
342 | * make our pread/pwrite emulation safe against themselves, but not against |
234 | * normal read/write by using a mutex. slows down execution a lot, |
343 | * normal read/write by using a mutex. slows down execution a lot, |
235 | * but that's your problem, not mine. |
344 | * but that's your problem, not mine. |
236 | */ |
345 | */ |
237 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
346 | static xmutex_t preadwritelock; |
238 | #endif |
347 | #endif |
239 | |
348 | |
240 | typedef struct etp_worker |
349 | typedef struct etp_worker |
241 | { |
350 | { |
242 | /* locked by wrklock */ |
351 | /* locked by wrklock */ |
… | |
… | |
245 | xthread_t tid; |
354 | xthread_t tid; |
246 | |
355 | |
247 | /* locked by reslock, reqlock or wrklock */ |
356 | /* locked by reslock, reqlock or wrklock */ |
248 | ETP_REQ *req; /* currently processed request */ |
357 | ETP_REQ *req; /* currently processed request */ |
249 | |
358 | |
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359 | #ifdef ETP_WORKER_COMMON |
250 | ETP_WORKER_COMMON |
360 | ETP_WORKER_COMMON |
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361 | #endif |
251 | } etp_worker; |
362 | } etp_worker; |
252 | |
363 | |
253 | static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
364 | static etp_worker wrk_first; /* NOT etp */ |
254 | |
365 | |
255 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
366 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
256 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
367 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
257 | |
368 | |
258 | /* worker threads management */ |
369 | /* worker threads management */ |
259 | |
370 | |
260 | static void ecb_cold |
371 | static void ecb_cold |
261 | etp_worker_clear (etp_worker *wrk) |
372 | etp_worker_clear (etp_worker *wrk) |
262 | { |
373 | { |
263 | ETP_WORKER_CLEAR (wrk); |
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264 | } |
374 | } |
265 | |
375 | |
266 | static void ecb_cold |
376 | static void ecb_cold |
267 | etp_worker_free (etp_worker *wrk) |
377 | etp_worker_free (etp_worker *wrk) |
268 | { |
378 | { |
… | |
… | |
329 | } etp_reqq; |
439 | } etp_reqq; |
330 | |
440 | |
331 | static etp_reqq req_queue; |
441 | static etp_reqq req_queue; |
332 | static etp_reqq res_queue; |
442 | static etp_reqq res_queue; |
333 | |
443 | |
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444 | static void ecb_noinline ecb_cold |
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445 | reqq_init (etp_reqq *q) |
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446 | { |
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447 | int pri; |
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448 | |
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449 | for (pri = 0; pri < ETP_NUM_PRI; ++pri) |
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450 | q->qs[pri] = q->qe[pri] = 0; |
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451 | |
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452 | q->size = 0; |
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453 | } |
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454 | |
334 | static int ecb_noinline |
455 | static int ecb_noinline |
335 | reqq_push (etp_reqq *q, ETP_REQ *req) |
456 | reqq_push (etp_reqq *q, ETP_REQ *req) |
336 | { |
457 | { |
337 | int pri = req->pri; |
458 | int pri = req->pri; |
338 | req->next = 0; |
459 | req->next = 0; |
… | |
… | |
372 | } |
493 | } |
373 | |
494 | |
374 | abort (); |
495 | abort (); |
375 | } |
496 | } |
376 | |
497 | |
377 | static void ecb_cold |
498 | static int ecb_cold |
378 | etp_thread_init (void) |
499 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
379 | { |
500 | { |
380 | X_MUTEX_CREATE (wrklock); |
501 | X_MUTEX_CREATE (wrklock); |
381 | X_MUTEX_CREATE (reslock); |
502 | X_MUTEX_CREATE (reslock); |
382 | X_MUTEX_CREATE (reqlock); |
503 | X_MUTEX_CREATE (reqlock); |
383 | X_COND_CREATE (reqwait); |
504 | X_COND_CREATE (reqwait); |
384 | } |
|
|
385 | |
505 | |
386 | static void ecb_cold |
506 | reqq_init (&req_queue); |
387 | etp_atfork_prepare (void) |
507 | reqq_init (&res_queue); |
388 | { |
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389 | X_LOCK (wrklock); |
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390 | X_LOCK (reqlock); |
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391 | X_LOCK (reslock); |
|
|
392 | #if !HAVE_PREADWRITE |
|
|
393 | X_LOCK (preadwritelock); |
|
|
394 | #endif |
|
|
395 | } |
|
|
396 | |
508 | |
397 | static void ecb_cold |
509 | wrk_first.next = |
398 | etp_atfork_parent (void) |
510 | wrk_first.prev = &wrk_first; |
399 | { |
|
|
400 | #if !HAVE_PREADWRITE |
|
|
401 | X_UNLOCK (preadwritelock); |
|
|
402 | #endif |
|
|
403 | X_UNLOCK (reslock); |
|
|
404 | X_UNLOCK (reqlock); |
|
|
405 | X_UNLOCK (wrklock); |
|
|
406 | } |
|
|
407 | |
|
|
408 | static void ecb_cold |
|
|
409 | etp_atfork_child (void) |
|
|
410 | { |
|
|
411 | ETP_REQ *prv; |
|
|
412 | |
|
|
413 | while ((prv = reqq_shift (&req_queue))) |
|
|
414 | ETP_DESTROY (prv); |
|
|
415 | |
|
|
416 | while ((prv = reqq_shift (&res_queue))) |
|
|
417 | ETP_DESTROY (prv); |
|
|
418 | |
|
|
419 | while (wrk_first.next != &wrk_first) |
|
|
420 | { |
|
|
421 | etp_worker *wrk = wrk_first.next; |
|
|
422 | |
|
|
423 | if (wrk->req) |
|
|
424 | ETP_DESTROY (wrk->req); |
|
|
425 | |
|
|
426 | etp_worker_clear (wrk); |
|
|
427 | etp_worker_free (wrk); |
|
|
428 | } |
|
|
429 | |
511 | |
430 | started = 0; |
512 | started = 0; |
431 | idle = 0; |
513 | idle = 0; |
432 | nreqs = 0; |
514 | nreqs = 0; |
433 | nready = 0; |
515 | nready = 0; |
434 | npending = 0; |
516 | npending = 0; |
435 | |
|
|
436 | etp_thread_init (); |
|
|
437 | } |
|
|
438 | |
|
|
439 | static void ecb_cold |
|
|
440 | etp_once_init (void) |
|
|
441 | { |
|
|
442 | etp_thread_init (); |
|
|
443 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
|
|
444 | } |
|
|
445 | |
|
|
446 | static int ecb_cold |
|
|
447 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
|
|
448 | { |
|
|
449 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
|
|
450 | |
|
|
451 | pthread_once (&doinit, etp_once_init); |
|
|
452 | |
517 | |
453 | want_poll_cb = want_poll; |
518 | want_poll_cb = want_poll; |
454 | done_poll_cb = done_poll; |
519 | done_poll_cb = done_poll; |
455 | |
520 | |
456 | return 0; |
521 | return 0; |
… | |
… | |
583 | } |
648 | } |
584 | |
649 | |
585 | static void |
650 | static void |
586 | etp_cancel (ETP_REQ *req) |
651 | etp_cancel (ETP_REQ *req) |
587 | { |
652 | { |
588 | X_LOCK (wrklock); |
653 | req->cancelled = 1; |
589 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
590 | X_UNLOCK (wrklock); |
|
|
591 | |
654 | |
592 | eio_grp_cancel (req); |
655 | eio_grp_cancel (req); |
593 | } |
656 | } |
594 | |
657 | |
595 | static void |
658 | static void |
… | |
… | |
711 | return eio_finish (grp); |
774 | return eio_finish (grp); |
712 | else |
775 | else |
713 | return 0; |
776 | return 0; |
714 | } |
777 | } |
715 | |
778 | |
716 | void |
779 | static void |
717 | eio_destroy (eio_req *req) |
780 | eio_destroy (eio_req *req) |
718 | { |
781 | { |
719 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
782 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
720 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
783 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
721 | |
784 | |
… | |
… | |
739 | if (grp->grp_first == req) |
802 | if (grp->grp_first == req) |
740 | grp->grp_first = req->grp_next; |
803 | grp->grp_first = req->grp_next; |
741 | |
804 | |
742 | res2 = grp_dec (grp); |
805 | res2 = grp_dec (grp); |
743 | |
806 | |
744 | if (!res && res2) |
807 | if (!res) |
745 | res = res2; |
808 | res = res2; |
746 | } |
809 | } |
747 | |
810 | |
748 | eio_destroy (req); |
811 | eio_destroy (req); |
749 | |
812 | |
… | |
… | |
834 | return etp_poll (); |
897 | return etp_poll (); |
835 | } |
898 | } |
836 | |
899 | |
837 | /*****************************************************************************/ |
900 | /*****************************************************************************/ |
838 | /* work around various missing functions */ |
901 | /* work around various missing functions */ |
839 | |
|
|
840 | #if _POSIX_VERSION < 200809L |
|
|
841 | # define realpath(path,resolved_path) (errno = ENOSYS, 0) |
|
|
842 | #endif |
|
|
843 | |
902 | |
844 | #if !HAVE_PREADWRITE |
903 | #if !HAVE_PREADWRITE |
845 | # undef pread |
904 | # undef pread |
846 | # undef pwrite |
905 | # undef pwrite |
847 | # define pread eio__pread |
906 | # define pread eio__pread |
848 | # define pwrite eio__pwrite |
907 | # define pwrite eio__pwrite |
849 | |
908 | |
850 | static ssize_t |
909 | static eio_ssize_t |
851 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
910 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
852 | { |
911 | { |
853 | ssize_t res; |
912 | eio_ssize_t res; |
854 | off_t ooffset; |
913 | off_t ooffset; |
855 | |
914 | |
856 | X_LOCK (preadwritelock); |
915 | X_LOCK (preadwritelock); |
857 | ooffset = lseek (fd, 0, SEEK_CUR); |
916 | ooffset = lseek (fd, 0, SEEK_CUR); |
858 | lseek (fd, offset, SEEK_SET); |
917 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
861 | X_UNLOCK (preadwritelock); |
920 | X_UNLOCK (preadwritelock); |
862 | |
921 | |
863 | return res; |
922 | return res; |
864 | } |
923 | } |
865 | |
924 | |
866 | static ssize_t |
925 | static eio_ssize_t |
867 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
926 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
868 | { |
927 | { |
869 | ssize_t res; |
928 | eio_ssize_t res; |
870 | off_t ooffset; |
929 | off_t ooffset; |
871 | |
930 | |
872 | X_LOCK (preadwritelock); |
931 | X_LOCK (preadwritelock); |
873 | ooffset = lseek (fd, 0, SEEK_CUR); |
932 | ooffset = lseek (fd, 0, SEEK_CUR); |
874 | lseek (fd, offset, SEEK_SET); |
933 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
919 | |
978 | |
920 | #if !HAVE_FDATASYNC |
979 | #if !HAVE_FDATASYNC |
921 | # undef fdatasync |
980 | # undef fdatasync |
922 | # define fdatasync(fd) fsync (fd) |
981 | # define fdatasync(fd) fsync (fd) |
923 | #endif |
982 | #endif |
|
|
983 | |
|
|
984 | static int |
|
|
985 | eio__syncfs (int fd) |
|
|
986 | { |
|
|
987 | int res; |
|
|
988 | |
|
|
989 | #if HAVE_SYS_SYNCFS |
|
|
990 | res = (int)syscall (__NR_syncfs, (int)(fd)); |
|
|
991 | #else |
|
|
992 | res = -1; |
|
|
993 | errno = ENOSYS; |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | if (res < 0 && errno == ENOSYS && fd >= 0) |
|
|
997 | sync (); |
|
|
998 | |
|
|
999 | return res; |
|
|
1000 | } |
924 | |
1001 | |
925 | /* sync_file_range always needs emulation */ |
1002 | /* sync_file_range always needs emulation */ |
926 | static int |
1003 | static int |
927 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
1004 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
928 | { |
1005 | { |
… | |
… | |
948 | /* even though we could play tricks with the flags, it's better to always |
1025 | /* even though we could play tricks with the flags, it's better to always |
949 | * call fdatasync, as that matches the expectation of its users best */ |
1026 | * call fdatasync, as that matches the expectation of its users best */ |
950 | return fdatasync (fd); |
1027 | return fdatasync (fd); |
951 | } |
1028 | } |
952 | |
1029 | |
|
|
1030 | static int |
|
|
1031 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
1032 | { |
|
|
1033 | #if HAVE_FALLOCATE |
|
|
1034 | return fallocate (fd, mode, offset, len); |
|
|
1035 | #else |
|
|
1036 | errno = ENOSYS; |
|
|
1037 | return -1; |
|
|
1038 | #endif |
|
|
1039 | } |
|
|
1040 | |
953 | #if !HAVE_READAHEAD |
1041 | #if !HAVE_READAHEAD |
954 | # undef readahead |
1042 | # undef readahead |
955 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
1043 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
956 | |
1044 | |
957 | static ssize_t |
1045 | static eio_ssize_t |
958 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
1046 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
959 | { |
1047 | { |
960 | size_t todo = count; |
1048 | size_t todo = count; |
961 | dBUF; |
1049 | dBUF; |
962 | |
1050 | |
… | |
… | |
967 | pread (fd, eio_buf, len, offset); |
1055 | pread (fd, eio_buf, len, offset); |
968 | offset += len; |
1056 | offset += len; |
969 | todo -= len; |
1057 | todo -= len; |
970 | } |
1058 | } |
971 | |
1059 | |
|
|
1060 | FUBd; |
|
|
1061 | |
972 | errno = 0; |
1062 | errno = 0; |
973 | return count; |
1063 | return count; |
974 | } |
1064 | } |
975 | |
1065 | |
976 | #endif |
1066 | #endif |
977 | |
1067 | |
978 | /* sendfile always needs emulation */ |
1068 | /* sendfile always needs emulation */ |
979 | static ssize_t |
1069 | static eio_ssize_t |
980 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
1070 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count) |
981 | { |
1071 | { |
982 | ssize_t written = 0; |
1072 | eio_ssize_t written = 0; |
983 | ssize_t res; |
1073 | eio_ssize_t res; |
984 | |
1074 | |
985 | if (!count) |
1075 | if (!count) |
986 | return 0; |
1076 | return 0; |
987 | |
1077 | |
988 | for (;;) |
1078 | for (;;) |
989 | { |
1079 | { |
|
|
1080 | #ifdef __APPLE__ |
|
|
1081 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
1082 | #endif |
990 | #if HAVE_SENDFILE |
1083 | #if HAVE_SENDFILE |
991 | # if __linux |
1084 | # if __linux |
992 | off_t soffset = offset; |
1085 | off_t soffset = offset; |
993 | res = sendfile (ofd, ifd, &soffset, count); |
1086 | res = sendfile (ofd, ifd, &soffset, count); |
994 | |
1087 | |
… | |
… | |
1010 | |
1103 | |
1011 | /* according to source inspection, this is correct, and useful behaviour */ |
1104 | /* according to source inspection, this is correct, and useful behaviour */ |
1012 | if (sbytes) |
1105 | if (sbytes) |
1013 | res = sbytes; |
1106 | res = sbytes; |
1014 | |
1107 | |
1015 | # elif defined (__APPLE__) && 0 /* broken, as everything on os x */ |
1108 | # elif defined (__APPLE__) |
1016 | off_t sbytes = count; |
1109 | off_t sbytes = count; |
1017 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
1110 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
1018 | |
1111 | |
1019 | /* according to the manpage, sbytes is always valid */ |
1112 | /* according to the manpage, sbytes is always valid */ |
1020 | if (sbytes) |
1113 | if (sbytes) |
… | |
… | |
1037 | if (res < 0 && sbytes) |
1130 | if (res < 0 && sbytes) |
1038 | res = sbytes; |
1131 | res = sbytes; |
1039 | |
1132 | |
1040 | # endif |
1133 | # endif |
1041 | |
1134 | |
1042 | #elif defined (_WIN32) |
1135 | #elif defined (_WIN32) && 0 |
1043 | /* does not work, just for documentation of what would need to be done */ |
1136 | /* does not work, just for documentation of what would need to be done */ |
1044 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
1137 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
1045 | /* libeio guarantees that the file offset does not change, and windows */ |
1138 | /* libeio guarantees that the file offset does not change, and windows */ |
1046 | /* has no way to get an independent handle to the same file description */ |
1139 | /* has no way to get an independent handle to the same file description */ |
1047 | HANDLE h = TO_SOCKET (ifd); |
1140 | HANDLE h = TO_SOCKET (ifd); |
… | |
… | |
1080 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1173 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1081 | /* BSDs */ |
1174 | /* BSDs */ |
1082 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
1175 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
1083 | || errno == ENOTSUP |
1176 | || errno == ENOTSUP |
1084 | #endif |
1177 | #endif |
|
|
1178 | #ifdef EOPNOTSUPP /* windows */ |
1085 | || errno == EOPNOTSUPP /* BSDs */ |
1179 | || errno == EOPNOTSUPP /* BSDs */ |
|
|
1180 | #endif |
1086 | #if __solaris |
1181 | #if __solaris |
1087 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1182 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1088 | #endif |
1183 | #endif |
1089 | ) |
1184 | ) |
1090 | ) |
1185 | ) |
… | |
… | |
1094 | |
1189 | |
1095 | res = 0; |
1190 | res = 0; |
1096 | |
1191 | |
1097 | while (count) |
1192 | while (count) |
1098 | { |
1193 | { |
1099 | ssize_t cnt; |
1194 | eio_ssize_t cnt; |
1100 | |
1195 | |
1101 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1196 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1102 | |
1197 | |
1103 | if (cnt <= 0) |
1198 | if (cnt <= 0) |
1104 | { |
1199 | { |
… | |
… | |
1116 | |
1211 | |
1117 | offset += cnt; |
1212 | offset += cnt; |
1118 | res += cnt; |
1213 | res += cnt; |
1119 | count -= cnt; |
1214 | count -= cnt; |
1120 | } |
1215 | } |
|
|
1216 | |
|
|
1217 | FUBd; |
1121 | } |
1218 | } |
1122 | |
1219 | |
1123 | return res; |
1220 | return res; |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | #ifdef PAGESIZE |
|
|
1224 | # define eio_pagesize() PAGESIZE |
|
|
1225 | #else |
|
|
1226 | static intptr_t |
|
|
1227 | eio_pagesize (void) |
|
|
1228 | { |
|
|
1229 | static intptr_t page; |
|
|
1230 | |
|
|
1231 | if (!page) |
|
|
1232 | page = sysconf (_SC_PAGESIZE); |
|
|
1233 | |
|
|
1234 | return page; |
|
|
1235 | } |
|
|
1236 | #endif |
|
|
1237 | |
|
|
1238 | static void |
|
|
1239 | eio_page_align (void **addr, size_t *length) |
|
|
1240 | { |
|
|
1241 | intptr_t mask = eio_pagesize () - 1; |
|
|
1242 | |
|
|
1243 | /* round down addr */ |
|
|
1244 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1245 | |
|
|
1246 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1247 | *length += adj; |
|
|
1248 | |
|
|
1249 | /* round up length */ |
|
|
1250 | *length = (*length + mask) & ~mask; |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | #if !_POSIX_MEMLOCK |
|
|
1254 | # define eio__mlockall(a) EIO_ENOSYS () |
|
|
1255 | #else |
|
|
1256 | |
|
|
1257 | static int |
|
|
1258 | eio__mlockall (int flags) |
|
|
1259 | { |
|
|
1260 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1261 | extern int mallopt (int, int); |
|
|
1262 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1263 | #endif |
|
|
1264 | |
|
|
1265 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1266 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1267 | { |
|
|
1268 | flags = 0 |
|
|
1269 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1270 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1271 | } |
|
|
1272 | |
|
|
1273 | return mlockall (flags); |
|
|
1274 | } |
|
|
1275 | #endif |
|
|
1276 | |
|
|
1277 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1278 | # define eio__mlock(a,b) EIO_ENOSYS () |
|
|
1279 | #else |
|
|
1280 | |
|
|
1281 | static int |
|
|
1282 | eio__mlock (void *addr, size_t length) |
|
|
1283 | { |
|
|
1284 | eio_page_align (&addr, &length); |
|
|
1285 | |
|
|
1286 | return mlock (addr, length); |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | #endif |
|
|
1290 | |
|
|
1291 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1292 | # define eio__msync(a,b,c) EIO_ENOSYS () |
|
|
1293 | #else |
|
|
1294 | |
|
|
1295 | static int |
|
|
1296 | eio__msync (void *mem, size_t len, int flags) |
|
|
1297 | { |
|
|
1298 | eio_page_align (&mem, &len); |
|
|
1299 | |
|
|
1300 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1301 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1302 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1303 | { |
|
|
1304 | flags = 0 |
|
|
1305 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1306 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1307 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1308 | } |
|
|
1309 | |
|
|
1310 | return msync (mem, len, flags); |
|
|
1311 | } |
|
|
1312 | |
|
|
1313 | #endif |
|
|
1314 | |
|
|
1315 | static int |
|
|
1316 | eio__mtouch (eio_req *req) |
|
|
1317 | { |
|
|
1318 | void *mem = req->ptr2; |
|
|
1319 | size_t len = req->size; |
|
|
1320 | int flags = req->int1; |
|
|
1321 | |
|
|
1322 | eio_page_align (&mem, &len); |
|
|
1323 | |
|
|
1324 | { |
|
|
1325 | intptr_t addr = (intptr_t)mem; |
|
|
1326 | intptr_t end = addr + len; |
|
|
1327 | intptr_t page = eio_pagesize (); |
|
|
1328 | |
|
|
1329 | if (addr < end) |
|
|
1330 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1331 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1332 | else |
|
|
1333 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1334 | } |
|
|
1335 | |
|
|
1336 | return 0; |
|
|
1337 | } |
|
|
1338 | |
|
|
1339 | /*****************************************************************************/ |
|
|
1340 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1341 | |
|
|
1342 | static void |
|
|
1343 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1344 | { |
|
|
1345 | char *rel = req->ptr1; |
|
|
1346 | char *res; |
|
|
1347 | char *tmp1, *tmp2; |
|
|
1348 | #if SYMLOOP_MAX > 32 |
|
|
1349 | int symlinks = SYMLOOP_MAX; |
|
|
1350 | #else |
|
|
1351 | int symlinks = 32; |
|
|
1352 | #endif |
|
|
1353 | |
|
|
1354 | req->result = -1; |
|
|
1355 | |
|
|
1356 | errno = EINVAL; |
|
|
1357 | if (!rel) |
|
|
1358 | return; |
|
|
1359 | |
|
|
1360 | errno = ENOENT; |
|
|
1361 | if (!*rel) |
|
|
1362 | return; |
|
|
1363 | |
|
|
1364 | if (!req->ptr2) |
|
|
1365 | { |
|
|
1366 | X_LOCK (wrklock); |
|
|
1367 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1368 | X_UNLOCK (wrklock); |
|
|
1369 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1370 | |
|
|
1371 | errno = ENOMEM; |
|
|
1372 | if (!req->ptr2) |
|
|
1373 | return; |
|
|
1374 | } |
|
|
1375 | |
|
|
1376 | res = req->ptr2; |
|
|
1377 | tmp1 = res + PATH_MAX; |
|
|
1378 | tmp2 = tmp1 + PATH_MAX; |
|
|
1379 | |
|
|
1380 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1381 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1382 | /* on linux we may be able to ask the kernel */ |
|
|
1383 | { |
|
|
1384 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1385 | |
|
|
1386 | if (fd >= 0) |
|
|
1387 | { |
|
|
1388 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1389 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1390 | close (fd); |
|
|
1391 | |
|
|
1392 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1393 | |
|
|
1394 | if (req->result > 0) |
|
|
1395 | goto done; |
|
|
1396 | } |
|
|
1397 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1398 | return; |
|
|
1399 | } |
|
|
1400 | #endif |
|
|
1401 | #endif |
|
|
1402 | |
|
|
1403 | if (*rel != '/') |
|
|
1404 | { |
|
|
1405 | if (!getcwd (res, PATH_MAX)) |
|
|
1406 | return; |
|
|
1407 | |
|
|
1408 | if (res [1]) /* only use if not / */ |
|
|
1409 | res += strlen (res); |
|
|
1410 | } |
|
|
1411 | |
|
|
1412 | while (*rel) |
|
|
1413 | { |
|
|
1414 | eio_ssize_t len, linklen; |
|
|
1415 | char *beg = rel; |
|
|
1416 | |
|
|
1417 | while (*rel && *rel != '/') |
|
|
1418 | ++rel; |
|
|
1419 | |
|
|
1420 | len = rel - beg; |
|
|
1421 | |
|
|
1422 | if (!len) /* skip slashes */ |
|
|
1423 | { |
|
|
1424 | ++rel; |
|
|
1425 | continue; |
|
|
1426 | } |
|
|
1427 | |
|
|
1428 | if (beg [0] == '.') |
|
|
1429 | { |
|
|
1430 | if (len == 1) |
|
|
1431 | continue; /* . - nop */ |
|
|
1432 | |
|
|
1433 | if (beg [1] == '.' && len == 2) |
|
|
1434 | { |
|
|
1435 | /* .. - back up one component, if possible */ |
|
|
1436 | |
|
|
1437 | while (res != req->ptr2) |
|
|
1438 | if (*--res == '/') |
|
|
1439 | break; |
|
|
1440 | |
|
|
1441 | continue; |
|
|
1442 | } |
|
|
1443 | } |
|
|
1444 | |
|
|
1445 | errno = ENAMETOOLONG; |
|
|
1446 | if (res + 1 + len + 1 >= tmp1) |
|
|
1447 | return; |
|
|
1448 | |
|
|
1449 | /* copy one component */ |
|
|
1450 | *res = '/'; |
|
|
1451 | memcpy (res + 1, beg, len); |
|
|
1452 | |
|
|
1453 | /* zero-terminate, for readlink */ |
|
|
1454 | res [len + 1] = 0; |
|
|
1455 | |
|
|
1456 | /* now check if it's a symlink */ |
|
|
1457 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1458 | |
|
|
1459 | if (linklen < 0) |
|
|
1460 | { |
|
|
1461 | if (errno != EINVAL) |
|
|
1462 | return; |
|
|
1463 | |
|
|
1464 | /* it's a normal directory. hopefully */ |
|
|
1465 | res += len + 1; |
|
|
1466 | } |
|
|
1467 | else |
|
|
1468 | { |
|
|
1469 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1470 | int rellen = strlen (rel); |
|
|
1471 | |
|
|
1472 | errno = ENAMETOOLONG; |
|
|
1473 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1474 | return; |
|
|
1475 | |
|
|
1476 | errno = ELOOP; |
|
|
1477 | if (!--symlinks) |
|
|
1478 | return; |
|
|
1479 | |
|
|
1480 | if (*tmp1 == '/') |
|
|
1481 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1482 | |
|
|
1483 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1484 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1485 | tmp2 [linklen] = '/'; |
|
|
1486 | memcpy (tmp2, tmp1, linklen); |
|
|
1487 | |
|
|
1488 | rel = tmp2; |
|
|
1489 | } |
|
|
1490 | } |
|
|
1491 | |
|
|
1492 | /* special case for the lone root path */ |
|
|
1493 | if (res == req->ptr2) |
|
|
1494 | *res++ = '/'; |
|
|
1495 | |
|
|
1496 | req->result = res - (char *)req->ptr2; |
|
|
1497 | |
|
|
1498 | done: |
|
|
1499 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
1124 | } |
1500 | } |
1125 | |
1501 | |
1126 | static signed char |
1502 | static signed char |
1127 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1503 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1128 | { |
1504 | { |
… | |
… | |
1136 | |
1512 | |
1137 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
1513 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
1138 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
1514 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
1139 | |
1515 | |
1140 | static void |
1516 | static void |
1141 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
1517 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
1142 | { |
1518 | { |
1143 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1519 | unsigned char bits [9 + sizeof (eio_ino_t) * 8]; |
1144 | unsigned char *bit = bits; |
1520 | unsigned char *bit = bits; |
1145 | |
1521 | |
1146 | assert (CHAR_BIT == 8); |
1522 | assert (CHAR_BIT == 8); |
1147 | assert (sizeof (eio_dirent) * 8 < 256); |
1523 | assert (sizeof (eio_dirent) * 8 < 256); |
1148 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
1524 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
… | |
… | |
1150 | |
1526 | |
1151 | if (size <= EIO_SORT_FAST) |
1527 | if (size <= EIO_SORT_FAST) |
1152 | return; |
1528 | return; |
1153 | |
1529 | |
1154 | /* first prepare an array of bits to test in our radix sort */ |
1530 | /* first prepare an array of bits to test in our radix sort */ |
1155 | /* try to take endianness into account, as well as differences in ino_t sizes */ |
1531 | /* try to take endianness into account, as well as differences in eio_ino_t sizes */ |
1156 | /* inode_bits must contain all inodes ORed together */ |
1532 | /* inode_bits must contain all inodes ORed together */ |
1157 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
1533 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
1158 | { |
1534 | { |
1159 | ino_t endianness; |
1535 | eio_ino_t endianness; |
1160 | int i, j; |
1536 | int i, j; |
1161 | |
1537 | |
1162 | /* we store the byte offset of byte n into byte n of "endianness" */ |
1538 | /* we store the byte offset of byte n into byte n of "endianness" */ |
1163 | for (i = 0; i < sizeof (ino_t); ++i) |
1539 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
1164 | ((unsigned char *)&endianness)[i] = i; |
1540 | ((unsigned char *)&endianness)[i] = i; |
1165 | |
1541 | |
1166 | *bit++ = 0; |
1542 | *bit++ = 0; |
1167 | |
1543 | |
1168 | for (i = 0; i < sizeof (ino_t); ++i) |
1544 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
1169 | { |
1545 | { |
1170 | /* shifting off the byte offsets out of "endianness" */ |
1546 | /* shifting off the byte offsets out of "endianness" */ |
1171 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
1547 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
1172 | endianness >>= 8; |
1548 | endianness >>= 8; |
1173 | |
1549 | |
1174 | for (j = 0; j < 8; ++j) |
1550 | for (j = 0; j < 8; ++j) |
1175 | if (inode_bits & (((ino_t)1) << (i * 8 + j))) |
1551 | if (inode_bits & (((eio_ino_t)1) << (i * 8 + j))) |
1176 | *bit++ = offs + j; |
1552 | *bit++ = offs + j; |
1177 | } |
1553 | } |
1178 | |
1554 | |
1179 | for (j = 0; j < 8; ++j) |
1555 | for (j = 0; j < 8; ++j) |
1180 | if (score_bits & (1 << j)) |
1556 | if (score_bits & (1 << j)) |
1181 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
1557 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
1182 | } |
1558 | } |
1183 | |
1559 | |
1184 | /* now actually do the sorting (a variant of MSD radix sort) */ |
1560 | /* now actually do the sorting (a variant of MSD radix sort) */ |
1185 | { |
1561 | { |
1186 | eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; |
1562 | eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base; |
1187 | eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; |
1563 | eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end; |
1188 | unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; |
1564 | unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8]; |
1189 | int stk_idx = 0; |
1565 | int stk_idx = 0; |
1190 | |
1566 | |
1191 | base_stk [stk_idx] = dents; |
1567 | base_stk [stk_idx] = dents; |
1192 | end_stk [stk_idx] = dents + size; |
1568 | end_stk [stk_idx] = dents + size; |
1193 | bit_stk [stk_idx] = bit - 1; |
1569 | bit_stk [stk_idx] = bit - 1; |
… | |
… | |
1272 | } |
1648 | } |
1273 | } |
1649 | } |
1274 | } |
1650 | } |
1275 | |
1651 | |
1276 | static void |
1652 | static void |
1277 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
1653 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
1278 | { |
1654 | { |
1279 | if (size <= 1) |
1655 | if (size <= 1) |
1280 | return; /* our insertion sort relies on size > 0 */ |
1656 | return; /* our insertion sort relies on size > 0 */ |
1281 | |
1657 | |
1282 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
1658 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
… | |
… | |
1290 | |
1666 | |
1291 | /* read a full directory */ |
1667 | /* read a full directory */ |
1292 | static void |
1668 | static void |
1293 | eio__scandir (eio_req *req, etp_worker *self) |
1669 | eio__scandir (eio_req *req, etp_worker *self) |
1294 | { |
1670 | { |
1295 | DIR *dirp; |
|
|
1296 | EIO_STRUCT_DIRENT *entp; |
|
|
1297 | char *name, *names; |
1671 | char *name, *names; |
1298 | int namesalloc = 4096; |
1672 | int namesalloc = 4096 - sizeof (void *) * 4; |
1299 | int namesoffs = 0; |
1673 | int namesoffs = 0; |
1300 | int flags = req->int1; |
1674 | int flags = req->int1; |
1301 | eio_dirent *dents = 0; |
1675 | eio_dirent *dents = 0; |
1302 | int dentalloc = 128; |
1676 | int dentalloc = 128; |
1303 | int dentoffs = 0; |
1677 | int dentoffs = 0; |
1304 | ino_t inode_bits = 0; |
1678 | eio_ino_t inode_bits = 0; |
|
|
1679 | #ifdef _WIN32 |
|
|
1680 | HANDLE dirp; |
|
|
1681 | WIN32_FIND_DATA entp; |
|
|
1682 | #else |
|
|
1683 | DIR *dirp; |
|
|
1684 | EIO_STRUCT_DIRENT *entp; |
|
|
1685 | #endif |
1305 | |
1686 | |
1306 | req->result = -1; |
1687 | req->result = -1; |
1307 | |
1688 | |
1308 | if (!(flags & EIO_READDIR_DENTS)) |
1689 | if (!(flags & EIO_READDIR_DENTS)) |
1309 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1690 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1310 | |
1691 | |
1311 | X_LOCK (wrklock); |
1692 | #ifdef _WIN32 |
1312 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1693 | { |
|
|
1694 | int len = strlen ((const char *)req->ptr1); |
|
|
1695 | char *path = malloc (MAX_PATH); |
|
|
1696 | const char *fmt; |
|
|
1697 | |
|
|
1698 | if (!len) |
|
|
1699 | fmt = "./*"; |
|
|
1700 | else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\') |
|
|
1701 | fmt = "%s*"; |
|
|
1702 | else |
|
|
1703 | fmt = "%s/*"; |
|
|
1704 | |
|
|
1705 | _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1); |
|
|
1706 | dirp = FindFirstFile (path, &entp); |
|
|
1707 | free (path); |
|
|
1708 | |
|
|
1709 | if (dirp == INVALID_HANDLE_VALUE) |
|
|
1710 | { |
|
|
1711 | dirp = 0; |
|
|
1712 | |
|
|
1713 | /* should steal _dosmaperr */ |
|
|
1714 | switch (GetLastError ()) |
|
|
1715 | { |
|
|
1716 | case ERROR_FILE_NOT_FOUND: |
|
|
1717 | req->result = 0; |
|
|
1718 | break; |
|
|
1719 | |
|
|
1720 | case ERROR_INVALID_NAME: |
|
|
1721 | case ERROR_PATH_NOT_FOUND: |
|
|
1722 | case ERROR_NO_MORE_FILES: |
|
|
1723 | errno = ENOENT; |
|
|
1724 | break; |
|
|
1725 | |
|
|
1726 | case ERROR_NOT_ENOUGH_MEMORY: |
|
|
1727 | errno = ENOMEM; |
|
|
1728 | break; |
|
|
1729 | |
|
|
1730 | default: |
|
|
1731 | errno = EINVAL; |
|
|
1732 | break; |
|
|
1733 | } |
|
|
1734 | } |
|
|
1735 | } |
|
|
1736 | #else |
1313 | self->dirp = dirp = opendir (req->ptr1); |
1737 | dirp = opendir (req->ptr1); |
|
|
1738 | #endif |
1314 | |
1739 | |
1315 | if (req->flags & EIO_FLAG_PTR1_FREE) |
1740 | if (req->flags & EIO_FLAG_PTR1_FREE) |
1316 | free (req->ptr1); |
1741 | free (req->ptr1); |
1317 | |
1742 | |
1318 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1743 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1319 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1744 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1320 | req->ptr2 = names = malloc (namesalloc); |
1745 | req->ptr2 = names = malloc (namesalloc); |
1321 | X_UNLOCK (wrklock); |
|
|
1322 | |
1746 | |
1323 | if (dirp && names && (!flags || dents)) |
1747 | if (dirp && names && (!flags || dents)) |
1324 | for (;;) |
1748 | for (;;) |
1325 | { |
1749 | { |
|
|
1750 | int done; |
|
|
1751 | |
|
|
1752 | #ifdef _WIN32 |
|
|
1753 | done = !dirp; |
|
|
1754 | #else |
1326 | errno = 0; |
1755 | errno = 0; |
1327 | entp = readdir (dirp); |
1756 | entp = readdir (dirp); |
|
|
1757 | done = !entp; |
|
|
1758 | #endif |
1328 | |
1759 | |
1329 | if (!entp) |
1760 | if (done) |
1330 | { |
1761 | { |
|
|
1762 | #ifndef _WIN32 |
|
|
1763 | int old_errno = errno; |
|
|
1764 | closedir (dirp); |
|
|
1765 | errno = old_errno; |
|
|
1766 | |
1331 | if (errno) |
1767 | if (errno) |
1332 | break; |
1768 | break; |
|
|
1769 | #endif |
1333 | |
1770 | |
1334 | /* sort etc. */ |
1771 | /* sort etc. */ |
1335 | req->int1 = flags; |
1772 | req->int1 = flags; |
1336 | req->result = dentoffs; |
1773 | req->result = dentoffs; |
1337 | |
1774 | |
… | |
… | |
1366 | |
1803 | |
1367 | break; |
1804 | break; |
1368 | } |
1805 | } |
1369 | |
1806 | |
1370 | /* now add the entry to our list(s) */ |
1807 | /* now add the entry to our list(s) */ |
1371 | name = entp->d_name; |
1808 | name = D_NAME (entp); |
1372 | |
1809 | |
1373 | /* skip . and .. entries */ |
1810 | /* skip . and .. entries */ |
1374 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1811 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1375 | { |
1812 | { |
1376 | int len = D_NAMLEN (entp) + 1; |
1813 | int len = D_NAMLEN (entp) + 1; |
1377 | |
1814 | |
1378 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1815 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1379 | { |
1816 | { |
1380 | namesalloc *= 2; |
1817 | namesalloc *= 2; |
1381 | X_LOCK (wrklock); |
|
|
1382 | req->ptr2 = names = realloc (names, namesalloc); |
1818 | req->ptr2 = names = realloc (names, namesalloc); |
1383 | X_UNLOCK (wrklock); |
|
|
1384 | |
1819 | |
1385 | if (!names) |
1820 | if (!names) |
1386 | break; |
1821 | break; |
1387 | } |
1822 | } |
1388 | |
1823 | |
… | |
… | |
1393 | struct eio_dirent *ent; |
1828 | struct eio_dirent *ent; |
1394 | |
1829 | |
1395 | if (ecb_expect_false (dentoffs == dentalloc)) |
1830 | if (ecb_expect_false (dentoffs == dentalloc)) |
1396 | { |
1831 | { |
1397 | dentalloc *= 2; |
1832 | dentalloc *= 2; |
1398 | X_LOCK (wrklock); |
|
|
1399 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1833 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1400 | X_UNLOCK (wrklock); |
|
|
1401 | |
1834 | |
1402 | if (!dents) |
1835 | if (!dents) |
1403 | break; |
1836 | break; |
1404 | } |
1837 | } |
1405 | |
1838 | |
… | |
… | |
1485 | if (EIO_CANCELLED (req)) |
1918 | if (EIO_CANCELLED (req)) |
1486 | { |
1919 | { |
1487 | errno = ECANCELED; |
1920 | errno = ECANCELED; |
1488 | break; |
1921 | break; |
1489 | } |
1922 | } |
|
|
1923 | |
|
|
1924 | #ifdef _WIN32 |
|
|
1925 | if (!FindNextFile (dirp, &entp)) |
|
|
1926 | { |
|
|
1927 | FindClose (dirp); |
|
|
1928 | dirp = 0; |
|
|
1929 | } |
|
|
1930 | #endif |
1490 | } |
1931 | } |
1491 | } |
|
|
1492 | |
|
|
1493 | #ifdef PAGESIZE |
|
|
1494 | # define eio_pagesize() PAGESIZE |
|
|
1495 | #else |
|
|
1496 | static intptr_t |
|
|
1497 | eio_pagesize (void) |
|
|
1498 | { |
|
|
1499 | static intptr_t page; |
|
|
1500 | |
|
|
1501 | if (!page) |
|
|
1502 | page = sysconf (_SC_PAGESIZE); |
|
|
1503 | |
|
|
1504 | return page; |
|
|
1505 | } |
|
|
1506 | #endif |
|
|
1507 | |
|
|
1508 | static void |
|
|
1509 | eio_page_align (void **addr, size_t *length) |
|
|
1510 | { |
|
|
1511 | intptr_t mask = eio_pagesize () - 1; |
|
|
1512 | |
|
|
1513 | /* round down addr */ |
|
|
1514 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1515 | |
|
|
1516 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1517 | *length += adj; |
|
|
1518 | |
|
|
1519 | /* round up length */ |
|
|
1520 | *length = (*length + mask) & ~mask; |
|
|
1521 | } |
|
|
1522 | |
|
|
1523 | #if !_POSIX_MEMLOCK |
|
|
1524 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1525 | #else |
|
|
1526 | |
|
|
1527 | static int |
|
|
1528 | eio__mlockall (int flags) |
|
|
1529 | { |
|
|
1530 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1531 | extern int mallopt (int, int); |
|
|
1532 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1533 | #endif |
|
|
1534 | |
|
|
1535 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1536 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1537 | { |
|
|
1538 | flags = 0 |
|
|
1539 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1540 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1541 | } |
|
|
1542 | |
|
|
1543 | return mlockall (flags); |
|
|
1544 | } |
|
|
1545 | #endif |
|
|
1546 | |
|
|
1547 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1548 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1549 | #else |
|
|
1550 | |
|
|
1551 | static int |
|
|
1552 | eio__mlock (void *addr, size_t length) |
|
|
1553 | { |
|
|
1554 | eio_page_align (&addr, &length); |
|
|
1555 | |
|
|
1556 | return mlock (addr, length); |
|
|
1557 | } |
|
|
1558 | |
|
|
1559 | #endif |
|
|
1560 | |
|
|
1561 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1562 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1563 | #else |
|
|
1564 | |
|
|
1565 | static int |
|
|
1566 | eio__msync (void *mem, size_t len, int flags) |
|
|
1567 | { |
|
|
1568 | eio_page_align (&mem, &len); |
|
|
1569 | |
|
|
1570 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1571 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1572 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1573 | { |
|
|
1574 | flags = 0 |
|
|
1575 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1576 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1577 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1578 | } |
|
|
1579 | |
|
|
1580 | return msync (mem, len, flags); |
|
|
1581 | } |
|
|
1582 | |
|
|
1583 | #endif |
|
|
1584 | |
|
|
1585 | static int |
|
|
1586 | eio__mtouch (eio_req *req) |
|
|
1587 | { |
|
|
1588 | void *mem = req->ptr2; |
|
|
1589 | size_t len = req->size; |
|
|
1590 | int flags = req->int1; |
|
|
1591 | |
|
|
1592 | eio_page_align (&mem, &len); |
|
|
1593 | |
|
|
1594 | { |
|
|
1595 | intptr_t addr = (intptr_t)mem; |
|
|
1596 | intptr_t end = addr + len; |
|
|
1597 | intptr_t page = eio_pagesize (); |
|
|
1598 | |
|
|
1599 | if (addr < end) |
|
|
1600 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1601 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1602 | else |
|
|
1603 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1604 | } |
|
|
1605 | |
|
|
1606 | return 0; |
|
|
1607 | } |
1932 | } |
1608 | |
1933 | |
1609 | /*****************************************************************************/ |
1934 | /*****************************************************************************/ |
1610 | |
1935 | |
1611 | #define ALLOC(len) \ |
1936 | #define ALLOC(len) \ |
… | |
… | |
1627 | { |
1952 | { |
1628 | ETP_REQ *req; |
1953 | ETP_REQ *req; |
1629 | struct timespec ts; |
1954 | struct timespec ts; |
1630 | etp_worker *self = (etp_worker *)thr_arg; |
1955 | etp_worker *self = (etp_worker *)thr_arg; |
1631 | |
1956 | |
|
|
1957 | #if HAVE_PRCTL_SET_NAME |
|
|
1958 | prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0); |
|
|
1959 | #endif |
|
|
1960 | |
1632 | /* try to distribute timeouts somewhat randomly */ |
1961 | /* try to distribute timeouts somewhat evenly */ |
1633 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1962 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1634 | |
1963 | |
1635 | for (;;) |
1964 | for (;;) |
1636 | { |
1965 | { |
|
|
1966 | ts.tv_sec = 0; |
|
|
1967 | |
1637 | X_LOCK (reqlock); |
1968 | X_LOCK (reqlock); |
1638 | |
1969 | |
1639 | for (;;) |
1970 | for (;;) |
1640 | { |
1971 | { |
1641 | self->req = req = reqq_shift (&req_queue); |
1972 | self->req = req = reqq_shift (&req_queue); |
1642 | |
1973 | |
1643 | if (req) |
1974 | if (req) |
1644 | break; |
1975 | break; |
1645 | |
1976 | |
|
|
1977 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
1978 | { |
|
|
1979 | X_UNLOCK (reqlock); |
|
|
1980 | X_LOCK (wrklock); |
|
|
1981 | --started; |
|
|
1982 | X_UNLOCK (wrklock); |
|
|
1983 | goto quit; |
|
|
1984 | } |
|
|
1985 | |
1646 | ++idle; |
1986 | ++idle; |
1647 | |
1987 | |
1648 | ts.tv_sec = time (0) + idle_timeout; |
1988 | if (idle <= max_idle) |
1649 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1989 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1990 | X_COND_WAIT (reqwait, reqlock); |
|
|
1991 | else |
1650 | { |
1992 | { |
1651 | if (idle > max_idle) |
1993 | /* initialise timeout once */ |
1652 | { |
1994 | if (!ts.tv_sec) |
1653 | --idle; |
1995 | ts.tv_sec = time (0) + idle_timeout; |
1654 | X_UNLOCK (reqlock); |
|
|
1655 | X_LOCK (wrklock); |
|
|
1656 | --started; |
|
|
1657 | X_UNLOCK (wrklock); |
|
|
1658 | goto quit; |
|
|
1659 | } |
|
|
1660 | |
1996 | |
1661 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1662 | X_COND_WAIT (reqwait, reqlock); |
1997 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1998 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
1663 | } |
1999 | } |
1664 | |
2000 | |
1665 | --idle; |
2001 | --idle; |
1666 | } |
2002 | } |
1667 | |
2003 | |
… | |
… | |
1670 | X_UNLOCK (reqlock); |
2006 | X_UNLOCK (reqlock); |
1671 | |
2007 | |
1672 | if (req->type < 0) |
2008 | if (req->type < 0) |
1673 | goto quit; |
2009 | goto quit; |
1674 | |
2010 | |
1675 | if (!EIO_CANCELLED (req)) |
|
|
1676 | ETP_EXECUTE (self, req); |
2011 | ETP_EXECUTE (self, req); |
1677 | |
2012 | |
1678 | X_LOCK (reslock); |
2013 | X_LOCK (reslock); |
1679 | |
2014 | |
1680 | ++npending; |
2015 | ++npending; |
1681 | |
2016 | |
… | |
… | |
1699 | /*****************************************************************************/ |
2034 | /*****************************************************************************/ |
1700 | |
2035 | |
1701 | int ecb_cold |
2036 | int ecb_cold |
1702 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2037 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1703 | { |
2038 | { |
|
|
2039 | #if !HAVE_PREADWRITE |
|
|
2040 | X_MUTEX_CREATE (preadwritelock); |
|
|
2041 | #endif |
|
|
2042 | |
1704 | return etp_init (want_poll, done_poll); |
2043 | return etp_init (want_poll, done_poll); |
1705 | } |
2044 | } |
1706 | |
2045 | |
1707 | ecb_inline void |
2046 | ecb_inline void |
1708 | eio_api_destroy (eio_req *req) |
2047 | eio_api_destroy (eio_req *req) |
… | |
… | |
1735 | } |
2074 | } |
1736 | |
2075 | |
1737 | static void |
2076 | static void |
1738 | eio_execute (etp_worker *self, eio_req *req) |
2077 | eio_execute (etp_worker *self, eio_req *req) |
1739 | { |
2078 | { |
|
|
2079 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
2080 | { |
|
|
2081 | req->result = -1; |
|
|
2082 | req->errorno = ECANCELED; |
|
|
2083 | return; |
|
|
2084 | } |
|
|
2085 | |
1740 | switch (req->type) |
2086 | switch (req->type) |
1741 | { |
2087 | { |
1742 | case EIO_READ: ALLOC (req->size); |
2088 | case EIO_READ: ALLOC (req->size); |
1743 | req->result = req->offs >= 0 |
2089 | req->result = req->offs >= 0 |
1744 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
2090 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1746 | case EIO_WRITE: req->result = req->offs >= 0 |
2092 | case EIO_WRITE: req->result = req->offs >= 0 |
1747 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
2093 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1748 | : write (req->int1, req->ptr2, req->size); break; |
2094 | : write (req->int1, req->ptr2, req->size); break; |
1749 | |
2095 | |
1750 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
2096 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1751 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; |
2097 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
1752 | |
2098 | |
1753 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2099 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1754 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2100 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1755 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2101 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1756 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2102 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
… | |
… | |
1778 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
2124 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1779 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
2125 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1780 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
2126 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1781 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
2127 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1782 | |
2128 | |
1783 | case EIO_REALPATH: req->flags |= EIO_FLAG_PTR2_FREE; |
2129 | case EIO_REALPATH: eio__realpath (req, self); break; |
1784 | req->ptr2 = realpath (req->ptr1, 0); |
|
|
1785 | req->result = req->ptr2 ? strlen (req->ptr2) : -1; |
|
|
1786 | break; |
|
|
1787 | |
2130 | |
1788 | case EIO_READLINK: ALLOC (PATH_MAX); |
2131 | case EIO_READLINK: ALLOC (PATH_MAX); |
1789 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
2132 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1790 | |
2133 | |
1791 | case EIO_SYNC: req->result = 0; sync (); break; |
2134 | case EIO_SYNC: req->result = 0; sync (); break; |
1792 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2135 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1793 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2136 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
2137 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
|
|
2138 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1794 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
2139 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1795 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
2140 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
1796 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
2141 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
1797 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
2142 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1798 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
2143 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
1799 | |
2144 | |
1800 | case EIO_READDIR: eio__scandir (req, self); break; |
2145 | case EIO_READDIR: eio__scandir (req, self); break; |
1801 | |
2146 | |
1802 | case EIO_BUSY: |
2147 | case EIO_BUSY: |
1803 | #ifdef _WIN32 |
2148 | #ifdef _WIN32 |
… | |
… | |
1883 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
2228 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1884 | { |
2229 | { |
1885 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
2230 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1886 | } |
2231 | } |
1887 | |
2232 | |
|
|
2233 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
|
|
2234 | { |
|
|
2235 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
|
|
2236 | } |
|
|
2237 | |
|
|
2238 | eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2239 | { |
|
|
2240 | REQ (EIO_SYNCFS); req->int1 = fd; SEND; |
|
|
2241 | } |
|
|
2242 | |
|
|
2243 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
2244 | { |
|
|
2245 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
2246 | } |
|
|
2247 | |
1888 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
2248 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1889 | { |
2249 | { |
1890 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
2250 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1891 | } |
2251 | } |
1892 | |
2252 | |
… | |
… | |
1898 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
2258 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
1899 | { |
2259 | { |
1900 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
2260 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
1901 | } |
2261 | } |
1902 | |
2262 | |
1903 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
2263 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
1904 | { |
2264 | { |
1905 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
2265 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
1906 | } |
|
|
1907 | |
|
|
1908 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
|
|
1909 | { |
|
|
1910 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
|
|
1911 | } |
2266 | } |
1912 | |
2267 | |
1913 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
2268 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
1914 | { |
2269 | { |
1915 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
2270 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
… | |
… | |
1953 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
2308 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1954 | { |
2309 | { |
1955 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2310 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1956 | } |
2311 | } |
1957 | |
2312 | |
1958 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2313 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1959 | { |
2314 | { |
1960 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2315 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1961 | } |
2316 | } |
1962 | |
2317 | |
1963 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
2318 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
… | |
… | |
1983 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
2338 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1984 | { |
2339 | { |
1985 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
2340 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1986 | } |
2341 | } |
1987 | |
2342 | |
1988 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2343 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1989 | { |
2344 | { |
1990 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2345 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1991 | } |
2346 | } |
1992 | |
2347 | |
1993 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
2348 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
… | |
… | |
2140 | } |
2495 | } |
2141 | |
2496 | |
2142 | /*****************************************************************************/ |
2497 | /*****************************************************************************/ |
2143 | /* misc garbage */ |
2498 | /* misc garbage */ |
2144 | |
2499 | |
2145 | ssize_t |
2500 | eio_ssize_t |
2146 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2501 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2147 | { |
2502 | { |
2148 | etp_worker wrk; |
|
|
2149 | ssize_t ret; |
|
|
2150 | |
|
|
2151 | wrk.dbuf = 0; |
|
|
2152 | |
|
|
2153 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
2503 | return eio__sendfile (ofd, ifd, offset, count); |
2154 | |
|
|
2155 | if (wrk.dbuf) |
|
|
2156 | free (wrk.dbuf); |
|
|
2157 | |
|
|
2158 | return ret; |
|
|
2159 | } |
2504 | } |
2160 | |
2505 | |