1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018 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, |
… | |
… | |
42 | #endif |
42 | #endif |
43 | |
43 | |
44 | #include "eio.h" |
44 | #include "eio.h" |
45 | #include "ecb.h" |
45 | #include "ecb.h" |
46 | |
46 | |
47 | #ifdef EIO_STACKSIZE |
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48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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49 | #endif |
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50 | #include "xthread.h" |
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51 | |
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52 | #include <errno.h> |
47 | #include <errno.h> |
53 | #include <stddef.h> |
48 | #include <stddef.h> |
54 | #include <stdlib.h> |
49 | #include <stdlib.h> |
55 | #include <string.h> |
50 | #include <string.h> |
56 | #include <errno.h> |
51 | #include <errno.h> |
… | |
… | |
105 | #ifdef _WIN32 |
100 | #ifdef _WIN32 |
106 | |
101 | |
107 | #undef PAGESIZE |
102 | #undef PAGESIZE |
108 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
103 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
109 | |
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 | |
110 | #ifdef EIO_STRUCT_STATI64 |
107 | #ifdef EIO_STRUCT_STATI64 |
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108 | /* look at perl's non-sloppy stat */ |
111 | #define stat(path,buf) _stati64 (path,buf) |
109 | #define stat(path,buf) _stati64 (path,buf) |
112 | #define fstat(fd,buf) _fstati64 (fd,buf) |
110 | #define fstat(fd,buf) _fstati64 (fd,buf) |
113 | #endif |
111 | #endif |
114 | #define lstat(path,buf) stat (path,buf) |
112 | #define lstat(path,buf) stat (path,buf) |
115 | #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
113 | #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
… | |
… | |
117 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
115 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
118 | |
116 | |
119 | #define chmod(path,mode) _chmod (path, mode) |
117 | #define chmod(path,mode) _chmod (path, mode) |
120 | #define dup(fd) _dup (fd) |
118 | #define dup(fd) _dup (fd) |
121 | #define dup2(fd1,fd2) _dup2 (fd1, fd2) |
119 | #define dup2(fd1,fd2) _dup2 (fd1, fd2) |
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120 | #define pipe(fds) _pipe (fds, 4096, O_BINARY) |
122 | |
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 () |
123 | #define fchmod(fd,mode) EIO_ENOSYS () |
124 | #define fchmod(fd,mode) EIO_ENOSYS () |
124 | #define chown(path,uid,gid) EIO_ENOSYS () |
125 | #define chown(path,uid,gid) EIO_ENOSYS () |
125 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
126 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
126 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
127 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
127 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
128 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
128 | #define mknod(path,mode,dev) EIO_ENOSYS () |
129 | #define mknod(path,mode,dev) EIO_ENOSYS () |
129 | #define sync() EIO_ENOSYS () |
130 | #define sync() EIO_ENOSYS () |
130 | #define readlink(path,buf,s) EIO_ENOSYS () |
131 | #define readlink(path,buf,s) EIO_ENOSYS () |
131 | #define statvfs(path,buf) EIO_ENOSYS () |
132 | #define statvfs(path,buf) EIO_ENOSYS () |
132 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
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 | } |
133 | |
169 | |
134 | /* rename() uses MoveFile, which fails to overwrite */ |
170 | /* rename() uses MoveFile, which fails to overwrite */ |
135 | #define rename(old,neu) eio__rename (old, neu) |
171 | #define rename(old,neu) eio__rename (old, neu) |
136 | |
172 | |
137 | static int |
173 | static int |
… | |
… | |
165 | /* we could even stat and see if it exists */ |
201 | /* we could even stat and see if it exists */ |
166 | static int |
202 | static int |
167 | symlink (const char *old, const char *neu) |
203 | symlink (const char *old, const char *neu) |
168 | { |
204 | { |
169 | #if WINVER >= 0x0600 |
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) |
170 | if (CreateSymbolicLink (neu, old, 1)) |
213 | if (CreateSymbolicLink (neu, old, flags)) |
171 | return 0; |
214 | return 0; |
172 | |
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173 | if (CreateSymbolicLink (neu, old, 0)) |
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174 | return 0; |
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175 | #endif |
215 | #endif |
176 | |
216 | |
177 | return EIO_ERRNO (ENOENT, -1); |
217 | return EIO_ERRNO (ENOENT, -1); |
178 | } |
218 | } |
179 | |
219 | |
180 | /* POSIX API only */ |
220 | /* POSIX API only, causing trouble for win32 apps */ |
181 | #define CreateHardLink(neu,old,flags) 0 |
221 | #define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */ |
182 | #define CreateSymbolicLink(neu,old,flags) 0 |
222 | #define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */ |
183 | |
223 | |
184 | struct statvfs |
224 | struct statvfs |
185 | { |
225 | { |
186 | int dummy; |
226 | int dummy; |
187 | }; |
227 | }; |
… | |
… | |
191 | #define D_NAME(entp) entp.cFileName |
231 | #define D_NAME(entp) entp.cFileName |
192 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
232 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
193 | |
233 | |
194 | #else |
234 | #else |
195 | |
235 | |
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236 | #include <sys/ioctl.h> |
196 | #include <sys/time.h> |
237 | #include <sys/time.h> |
197 | #include <sys/select.h> |
238 | #include <sys/select.h> |
198 | #include <sys/statvfs.h> |
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199 | #include <unistd.h> |
239 | #include <unistd.h> |
200 | #include <signal.h> |
240 | #include <signal.h> |
201 | #include <dirent.h> |
241 | #include <dirent.h> |
202 | |
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 | |
203 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
252 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
204 | #include <sys/mman.h> |
253 | #include <sys/mman.h> |
205 | #endif |
254 | #endif |
206 | |
255 | |
207 | #define D_NAME(entp) entp->d_name |
256 | #define D_NAME(entp) entp->d_name |
208 | |
257 | |
209 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
258 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
210 | #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
259 | #if __FreeBSD__ || __NetBSD__ || __OpenBSD__ |
211 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
260 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
212 | #define D_INO(de) (de)->d_fileno |
261 | #define D_INO(de) (de)->d_fileno |
213 | #define D_NAMLEN(de) (de)->d_namlen |
262 | #define D_NAMLEN(de) (de)->d_namlen |
214 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
263 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
215 | #define D_INO(de) (de)->d_ino |
264 | #define D_INO(de) (de)->d_ino |
… | |
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234 | # include <utime.h> |
283 | # include <utime.h> |
235 | #endif |
284 | #endif |
236 | |
285 | |
237 | #if HAVE_SYS_SYSCALL_H |
286 | #if HAVE_SYS_SYSCALL_H |
238 | # include <sys/syscall.h> |
287 | # include <sys/syscall.h> |
239 | #endif |
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240 | |
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241 | #if HAVE_SYS_PRCTL_H |
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242 | # include <sys/prctl.h> |
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243 | #endif |
288 | #endif |
244 | |
289 | |
245 | #if HAVE_SENDFILE |
290 | #if HAVE_SENDFILE |
246 | # if __linux |
291 | # if __linux |
247 | # include <sys/sendfile.h> |
292 | # include <sys/sendfile.h> |
… | |
… | |
255 | # else |
300 | # else |
256 | # error sendfile support requested but not available |
301 | # error sendfile support requested but not available |
257 | # endif |
302 | # endif |
258 | #endif |
303 | #endif |
259 | |
304 | |
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305 | #if HAVE_RENAMEAT2 |
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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 | |
260 | #ifndef D_TYPE |
310 | #ifndef D_TYPE |
261 | # define D_TYPE(de) 0 |
311 | # define D_TYPE(de) 0 |
262 | #endif |
312 | #endif |
263 | #ifndef D_INO |
313 | #ifndef D_INO |
264 | # define D_INO(de) 0 |
314 | # define D_INO(de) 0 |
… | |
… | |
272 | # define NAME_MAX 4096 |
322 | # define NAME_MAX 4096 |
273 | #endif |
323 | #endif |
274 | |
324 | |
275 | /* used for readlink etc. */ |
325 | /* used for readlink etc. */ |
276 | #ifndef PATH_MAX |
326 | #ifndef PATH_MAX |
277 | # define PATH_MAX 4096 |
327 | # define PATH_MAX 0 |
278 | #endif |
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 | |
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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) |
279 | |
351 | |
280 | /* buffer size for various temporary buffers */ |
352 | /* buffer size for various temporary buffers */ |
281 | #define EIO_BUFSIZE 65536 |
353 | #define EIO_BUFSIZE 65536 |
282 | |
354 | |
283 | #define dBUF \ |
355 | #define dBUF \ |
284 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
356 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
285 | errno = ENOMEM; \ |
357 | errno = ENOMEM; \ |
286 | if (!eio_buf) \ |
358 | if (!eio_buf) \ |
287 | return -1 |
359 | return -1 |
288 | |
360 | |
289 | #define FUBd \ |
361 | #define FUBd \ |
290 | free (eio_buf) |
362 | free (eio_buf) |
291 | |
363 | |
292 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
364 | /*****************************************************************************/ |
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365 | |
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366 | struct etp_tmpbuf; |
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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) |
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371 | #else |
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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); |
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374 | #endif |
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375 | |
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376 | struct eio_pwd |
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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 | }; |
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384 | |
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385 | /*****************************************************************************/ |
293 | |
386 | |
294 | #define ETP_PRI_MIN EIO_PRI_MIN |
387 | #define ETP_PRI_MIN EIO_PRI_MIN |
295 | #define ETP_PRI_MAX EIO_PRI_MAX |
388 | #define ETP_PRI_MAX EIO_PRI_MAX |
296 | |
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; |
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395 | static void (*eio_done_poll_cb)(void) = eio_nop_callback; |
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396 | |
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397 | #define ETP_WANT_POLL(pool) eio_want_poll_cb () |
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398 | #define ETP_DONE_POLL(pool) eio_done_poll_cb () |
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399 | |
297 | struct etp_worker; |
400 | struct etp_worker; |
298 | |
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299 | #define ETP_REQ eio_req |
401 | #define ETP_REQ eio_req |
300 | #define ETP_DESTROY(req) eio_destroy (req) |
402 | #define ETP_DESTROY(req) eio_destroy (req) |
301 | static int eio_finish (eio_req *req); |
403 | static int eio_finish (eio_req *req); |
302 | #define ETP_FINISH(req) eio_finish (req) |
404 | #define ETP_FINISH(req) eio_finish (req) |
303 | static void eio_execute (struct etp_worker *self, eio_req *req); |
405 | static void eio_execute (struct etp_worker *self, eio_req *req); |
304 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
406 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk, req) |
305 | |
407 | |
306 | /*****************************************************************************/ |
408 | #include "etp.c" |
307 | |
409 | |
308 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
410 | static struct etp_pool eio_pool; |
309 | |
411 | #define EIO_POOL (&eio_pool) |
310 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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311 | ecb_inline int |
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312 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
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313 | { |
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314 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
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315 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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316 | } |
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317 | |
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318 | static unsigned int started, idle, wanted = 4; |
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319 | |
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320 | static void (*want_poll_cb) (void); |
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321 | static void (*done_poll_cb) (void); |
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322 | |
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323 | static unsigned int max_poll_time; /* reslock */ |
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324 | static unsigned int max_poll_reqs; /* reslock */ |
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325 | |
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326 | static volatile unsigned int nreqs; /* reqlock */ |
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327 | static volatile unsigned int nready; /* reqlock */ |
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328 | static volatile unsigned int npending; /* reqlock */ |
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329 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
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330 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
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331 | |
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332 | static xmutex_t wrklock; |
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333 | static xmutex_t reslock; |
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334 | static xmutex_t reqlock; |
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335 | static xcond_t reqwait; |
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336 | |
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337 | #if !HAVE_PREADWRITE |
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338 | /* |
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339 | * make our pread/pwrite emulation safe against themselves, but not against |
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340 | * normal read/write by using a mutex. slows down execution a lot, |
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341 | * but that's your problem, not mine. |
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342 | */ |
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343 | static xmutex_t preadwritelock; |
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344 | #endif |
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345 | |
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346 | typedef struct etp_worker |
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347 | { |
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348 | /* locked by wrklock */ |
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349 | struct etp_worker *prev, *next; |
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350 | |
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351 | xthread_t tid; |
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352 | |
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353 | /* locked by reslock, reqlock or wrklock */ |
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354 | ETP_REQ *req; /* currently processed request */ |
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355 | |
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356 | #ifdef ETP_WORKER_COMMON |
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357 | ETP_WORKER_COMMON |
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358 | #endif |
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359 | } etp_worker; |
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360 | |
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361 | static etp_worker wrk_first; /* NOT etp */ |
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362 | |
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363 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
|
|
364 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
|
|
365 | |
|
|
366 | /* worker threads management */ |
|
|
367 | |
|
|
368 | static void ecb_cold |
|
|
369 | etp_worker_clear (etp_worker *wrk) |
|
|
370 | { |
|
|
371 | } |
|
|
372 | |
|
|
373 | static void ecb_cold |
|
|
374 | etp_worker_free (etp_worker *wrk) |
|
|
375 | { |
|
|
376 | wrk->next->prev = wrk->prev; |
|
|
377 | wrk->prev->next = wrk->next; |
|
|
378 | |
|
|
379 | free (wrk); |
|
|
380 | } |
|
|
381 | |
|
|
382 | static unsigned int |
|
|
383 | etp_nreqs (void) |
|
|
384 | { |
|
|
385 | int retval; |
|
|
386 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
387 | retval = nreqs; |
|
|
388 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
389 | return retval; |
|
|
390 | } |
|
|
391 | |
|
|
392 | static unsigned int |
|
|
393 | etp_nready (void) |
|
|
394 | { |
|
|
395 | unsigned int retval; |
|
|
396 | |
|
|
397 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
398 | retval = nready; |
|
|
399 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
400 | |
|
|
401 | return retval; |
|
|
402 | } |
|
|
403 | |
|
|
404 | static unsigned int |
|
|
405 | etp_npending (void) |
|
|
406 | { |
|
|
407 | unsigned int retval; |
|
|
408 | |
|
|
409 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
410 | retval = npending; |
|
|
411 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
412 | |
|
|
413 | return retval; |
|
|
414 | } |
|
|
415 | |
|
|
416 | static unsigned int |
|
|
417 | etp_nthreads (void) |
|
|
418 | { |
|
|
419 | unsigned int retval; |
|
|
420 | |
|
|
421 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
422 | retval = started; |
|
|
423 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
424 | |
|
|
425 | return retval; |
|
|
426 | } |
|
|
427 | |
|
|
428 | /* |
|
|
429 | * a somewhat faster data structure might be nice, but |
|
|
430 | * with 8 priorities this actually needs <20 insns |
|
|
431 | * per shift, the most expensive operation. |
|
|
432 | */ |
|
|
433 | typedef struct { |
|
|
434 | ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ |
|
|
435 | int size; |
|
|
436 | } etp_reqq; |
|
|
437 | |
|
|
438 | static etp_reqq req_queue; |
|
|
439 | static etp_reqq res_queue; |
|
|
440 | |
|
|
441 | static void ecb_noinline ecb_cold |
|
|
442 | reqq_init (etp_reqq *q) |
|
|
443 | { |
|
|
444 | int pri; |
|
|
445 | |
|
|
446 | for (pri = 0; pri < ETP_NUM_PRI; ++pri) |
|
|
447 | q->qs[pri] = q->qe[pri] = 0; |
|
|
448 | |
|
|
449 | q->size = 0; |
|
|
450 | } |
|
|
451 | |
|
|
452 | static int ecb_noinline |
|
|
453 | reqq_push (etp_reqq *q, ETP_REQ *req) |
|
|
454 | { |
|
|
455 | int pri = req->pri; |
|
|
456 | req->next = 0; |
|
|
457 | |
|
|
458 | if (q->qe[pri]) |
|
|
459 | { |
|
|
460 | q->qe[pri]->next = req; |
|
|
461 | q->qe[pri] = req; |
|
|
462 | } |
|
|
463 | else |
|
|
464 | q->qe[pri] = q->qs[pri] = req; |
|
|
465 | |
|
|
466 | return q->size++; |
|
|
467 | } |
|
|
468 | |
|
|
469 | static ETP_REQ * ecb_noinline |
|
|
470 | reqq_shift (etp_reqq *q) |
|
|
471 | { |
|
|
472 | int pri; |
|
|
473 | |
|
|
474 | if (!q->size) |
|
|
475 | return 0; |
|
|
476 | |
|
|
477 | --q->size; |
|
|
478 | |
|
|
479 | for (pri = ETP_NUM_PRI; pri--; ) |
|
|
480 | { |
|
|
481 | eio_req *req = q->qs[pri]; |
|
|
482 | |
|
|
483 | if (req) |
|
|
484 | { |
|
|
485 | if (!(q->qs[pri] = (eio_req *)req->next)) |
|
|
486 | q->qe[pri] = 0; |
|
|
487 | |
|
|
488 | return req; |
|
|
489 | } |
|
|
490 | } |
|
|
491 | |
|
|
492 | abort (); |
|
|
493 | } |
|
|
494 | |
|
|
495 | static int ecb_cold |
|
|
496 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
|
|
497 | { |
|
|
498 | X_MUTEX_CREATE (wrklock); |
|
|
499 | X_MUTEX_CREATE (reslock); |
|
|
500 | X_MUTEX_CREATE (reqlock); |
|
|
501 | X_COND_CREATE (reqwait); |
|
|
502 | |
|
|
503 | reqq_init (&req_queue); |
|
|
504 | reqq_init (&res_queue); |
|
|
505 | |
|
|
506 | wrk_first.next = |
|
|
507 | wrk_first.prev = &wrk_first; |
|
|
508 | |
|
|
509 | started = 0; |
|
|
510 | idle = 0; |
|
|
511 | nreqs = 0; |
|
|
512 | nready = 0; |
|
|
513 | npending = 0; |
|
|
514 | |
|
|
515 | want_poll_cb = want_poll; |
|
|
516 | done_poll_cb = done_poll; |
|
|
517 | |
|
|
518 | return 0; |
|
|
519 | } |
|
|
520 | |
|
|
521 | X_THREAD_PROC (etp_proc); |
|
|
522 | |
|
|
523 | static void ecb_cold |
|
|
524 | etp_start_thread (void) |
|
|
525 | { |
|
|
526 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
|
|
527 | |
|
|
528 | /*TODO*/ |
|
|
529 | assert (("unable to allocate worker thread data", wrk)); |
|
|
530 | |
|
|
531 | X_LOCK (wrklock); |
|
|
532 | |
|
|
533 | if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
|
|
534 | { |
|
|
535 | wrk->prev = &wrk_first; |
|
|
536 | wrk->next = wrk_first.next; |
|
|
537 | wrk_first.next->prev = wrk; |
|
|
538 | wrk_first.next = wrk; |
|
|
539 | ++started; |
|
|
540 | } |
|
|
541 | else |
|
|
542 | free (wrk); |
|
|
543 | |
|
|
544 | X_UNLOCK (wrklock); |
|
|
545 | } |
|
|
546 | |
|
|
547 | static void |
|
|
548 | etp_maybe_start_thread (void) |
|
|
549 | { |
|
|
550 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
|
|
551 | return; |
|
|
552 | |
|
|
553 | /* todo: maybe use idle here, but might be less exact */ |
|
|
554 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
|
|
555 | return; |
|
|
556 | |
|
|
557 | etp_start_thread (); |
|
|
558 | } |
|
|
559 | |
|
|
560 | static void ecb_cold |
|
|
561 | etp_end_thread (void) |
|
|
562 | { |
|
|
563 | eio_req *req = calloc (1, sizeof (eio_req)); |
|
|
564 | |
|
|
565 | req->type = -1; |
|
|
566 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
567 | |
|
|
568 | X_LOCK (reqlock); |
|
|
569 | reqq_push (&req_queue, req); |
|
|
570 | X_COND_SIGNAL (reqwait); |
|
|
571 | X_UNLOCK (reqlock); |
|
|
572 | |
|
|
573 | X_LOCK (wrklock); |
|
|
574 | --started; |
|
|
575 | X_UNLOCK (wrklock); |
|
|
576 | } |
|
|
577 | |
|
|
578 | static int |
|
|
579 | etp_poll (void) |
|
|
580 | { |
|
|
581 | unsigned int maxreqs; |
|
|
582 | unsigned int maxtime; |
|
|
583 | struct timeval tv_start, tv_now; |
|
|
584 | |
|
|
585 | X_LOCK (reslock); |
|
|
586 | maxreqs = max_poll_reqs; |
|
|
587 | maxtime = max_poll_time; |
|
|
588 | X_UNLOCK (reslock); |
|
|
589 | |
|
|
590 | if (maxtime) |
|
|
591 | gettimeofday (&tv_start, 0); |
|
|
592 | |
|
|
593 | for (;;) |
|
|
594 | { |
|
|
595 | ETP_REQ *req; |
|
|
596 | |
|
|
597 | etp_maybe_start_thread (); |
|
|
598 | |
|
|
599 | X_LOCK (reslock); |
|
|
600 | req = reqq_shift (&res_queue); |
|
|
601 | |
|
|
602 | if (req) |
|
|
603 | { |
|
|
604 | --npending; |
|
|
605 | |
|
|
606 | if (!res_queue.size && done_poll_cb) |
|
|
607 | done_poll_cb (); |
|
|
608 | } |
|
|
609 | |
|
|
610 | X_UNLOCK (reslock); |
|
|
611 | |
|
|
612 | if (!req) |
|
|
613 | return 0; |
|
|
614 | |
|
|
615 | X_LOCK (reqlock); |
|
|
616 | --nreqs; |
|
|
617 | X_UNLOCK (reqlock); |
|
|
618 | |
|
|
619 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
|
|
620 | { |
|
|
621 | req->int1 = 1; /* mark request as delayed */ |
|
|
622 | continue; |
|
|
623 | } |
|
|
624 | else |
|
|
625 | { |
|
|
626 | int res = ETP_FINISH (req); |
|
|
627 | if (ecb_expect_false (res)) |
|
|
628 | return res; |
|
|
629 | } |
|
|
630 | |
|
|
631 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
|
|
632 | break; |
|
|
633 | |
|
|
634 | if (maxtime) |
|
|
635 | { |
|
|
636 | gettimeofday (&tv_now, 0); |
|
|
637 | |
|
|
638 | if (tvdiff (&tv_start, &tv_now) >= maxtime) |
|
|
639 | break; |
|
|
640 | } |
|
|
641 | } |
|
|
642 | |
|
|
643 | errno = EAGAIN; |
|
|
644 | return -1; |
|
|
645 | } |
|
|
646 | |
|
|
647 | static void |
|
|
648 | etp_cancel (ETP_REQ *req) |
|
|
649 | { |
|
|
650 | req->cancelled = 1; |
|
|
651 | |
|
|
652 | eio_grp_cancel (req); |
|
|
653 | } |
|
|
654 | |
|
|
655 | static void |
|
|
656 | etp_submit (ETP_REQ *req) |
|
|
657 | { |
|
|
658 | req->pri -= ETP_PRI_MIN; |
|
|
659 | |
|
|
660 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
|
|
661 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
662 | |
|
|
663 | if (ecb_expect_false (req->type == EIO_GROUP)) |
|
|
664 | { |
|
|
665 | /* I hope this is worth it :/ */ |
|
|
666 | X_LOCK (reqlock); |
|
|
667 | ++nreqs; |
|
|
668 | X_UNLOCK (reqlock); |
|
|
669 | |
|
|
670 | X_LOCK (reslock); |
|
|
671 | |
|
|
672 | ++npending; |
|
|
673 | |
|
|
674 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
675 | want_poll_cb (); |
|
|
676 | |
|
|
677 | X_UNLOCK (reslock); |
|
|
678 | } |
|
|
679 | else |
|
|
680 | { |
|
|
681 | X_LOCK (reqlock); |
|
|
682 | ++nreqs; |
|
|
683 | ++nready; |
|
|
684 | reqq_push (&req_queue, req); |
|
|
685 | X_COND_SIGNAL (reqwait); |
|
|
686 | X_UNLOCK (reqlock); |
|
|
687 | |
|
|
688 | etp_maybe_start_thread (); |
|
|
689 | } |
|
|
690 | } |
|
|
691 | |
|
|
692 | static void ecb_cold |
|
|
693 | etp_set_max_poll_time (double nseconds) |
|
|
694 | { |
|
|
695 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
696 | max_poll_time = nseconds * EIO_TICKS; |
|
|
697 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
698 | } |
|
|
699 | |
|
|
700 | static void ecb_cold |
|
|
701 | etp_set_max_poll_reqs (unsigned int maxreqs) |
|
|
702 | { |
|
|
703 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
704 | max_poll_reqs = maxreqs; |
|
|
705 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
706 | } |
|
|
707 | |
|
|
708 | static void ecb_cold |
|
|
709 | etp_set_max_idle (unsigned int nthreads) |
|
|
710 | { |
|
|
711 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
712 | max_idle = nthreads; |
|
|
713 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
714 | } |
|
|
715 | |
|
|
716 | static void ecb_cold |
|
|
717 | etp_set_idle_timeout (unsigned int seconds) |
|
|
718 | { |
|
|
719 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
720 | idle_timeout = seconds; |
|
|
721 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
722 | } |
|
|
723 | |
|
|
724 | static void ecb_cold |
|
|
725 | etp_set_min_parallel (unsigned int nthreads) |
|
|
726 | { |
|
|
727 | if (wanted < nthreads) |
|
|
728 | wanted = nthreads; |
|
|
729 | } |
|
|
730 | |
|
|
731 | static void ecb_cold |
|
|
732 | etp_set_max_parallel (unsigned int nthreads) |
|
|
733 | { |
|
|
734 | if (wanted > nthreads) |
|
|
735 | wanted = nthreads; |
|
|
736 | |
|
|
737 | while (started > wanted) |
|
|
738 | etp_end_thread (); |
|
|
739 | } |
|
|
740 | |
412 | |
741 | /*****************************************************************************/ |
413 | /*****************************************************************************/ |
742 | |
414 | |
743 | static void |
415 | static void |
744 | grp_try_feed (eio_req *grp) |
416 | grp_try_feed (eio_req *grp) |
745 | { |
417 | { |
746 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
418 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
747 | { |
419 | { |
748 | grp->flags &= ~EIO_FLAG_GROUPADD; |
420 | grp->flags &= ~ETP_FLAG_GROUPADD; |
749 | |
421 | |
750 | EIO_FEED (grp); |
422 | EIO_FEED (grp); |
751 | |
423 | |
752 | /* stop if no progress has been made */ |
424 | /* stop if no progress has been made */ |
753 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
425 | if (!(grp->flags & ETP_FLAG_GROUPADD)) |
754 | { |
426 | { |
755 | grp->feed = 0; |
427 | grp->feed = 0; |
756 | break; |
428 | break; |
757 | } |
429 | } |
758 | } |
430 | } |
… | |
… | |
765 | |
437 | |
766 | /* call feeder, if applicable */ |
438 | /* call feeder, if applicable */ |
767 | grp_try_feed (grp); |
439 | grp_try_feed (grp); |
768 | |
440 | |
769 | /* finish, if done */ |
441 | /* finish, if done */ |
770 | if (!grp->size && grp->int1) |
442 | if (!grp->size && grp->flags & ETP_FLAG_DELAYED) |
771 | return eio_finish (grp); |
443 | return eio_finish (grp); |
772 | else |
444 | else |
773 | return 0; |
445 | return 0; |
774 | } |
446 | } |
775 | |
447 | |
… | |
… | |
811 | } |
483 | } |
812 | |
484 | |
813 | void |
485 | void |
814 | eio_grp_cancel (eio_req *grp) |
486 | eio_grp_cancel (eio_req *grp) |
815 | { |
487 | { |
816 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
488 | etp_grp_cancel (EIO_POOL, grp); |
817 | eio_cancel (grp); |
|
|
818 | } |
489 | } |
819 | |
490 | |
820 | void |
491 | void |
821 | eio_cancel (eio_req *req) |
492 | eio_cancel (eio_req *req) |
822 | { |
493 | { |
823 | etp_cancel (req); |
494 | etp_cancel (EIO_POOL, req); |
824 | } |
495 | } |
825 | |
496 | |
826 | void |
497 | void |
827 | eio_submit (eio_req *req) |
498 | eio_submit (eio_req *req) |
828 | { |
499 | { |
829 | etp_submit (req); |
500 | etp_submit (EIO_POOL, req); |
830 | } |
501 | } |
831 | |
502 | |
832 | unsigned int |
503 | unsigned int |
833 | eio_nreqs (void) |
504 | eio_nreqs (void) |
834 | { |
505 | { |
835 | return etp_nreqs (); |
506 | return etp_nreqs (EIO_POOL); |
836 | } |
507 | } |
837 | |
508 | |
838 | unsigned int |
509 | unsigned int |
839 | eio_nready (void) |
510 | eio_nready (void) |
840 | { |
511 | { |
841 | return etp_nready (); |
512 | return etp_nready (EIO_POOL); |
842 | } |
513 | } |
843 | |
514 | |
844 | unsigned int |
515 | unsigned int |
845 | eio_npending (void) |
516 | eio_npending (void) |
846 | { |
517 | { |
847 | return etp_npending (); |
518 | return etp_npending (EIO_POOL); |
848 | } |
519 | } |
849 | |
520 | |
850 | unsigned int ecb_cold |
521 | unsigned int ecb_cold |
851 | eio_nthreads (void) |
522 | eio_nthreads (void) |
852 | { |
523 | { |
853 | return etp_nthreads (); |
524 | return etp_nthreads (EIO_POOL); |
854 | } |
525 | } |
855 | |
526 | |
856 | void ecb_cold |
527 | void ecb_cold |
857 | eio_set_max_poll_time (double nseconds) |
528 | eio_set_max_poll_time (double nseconds) |
858 | { |
529 | { |
859 | etp_set_max_poll_time (nseconds); |
530 | etp_set_max_poll_time (EIO_POOL, nseconds); |
860 | } |
531 | } |
861 | |
532 | |
862 | void ecb_cold |
533 | void ecb_cold |
863 | eio_set_max_poll_reqs (unsigned int maxreqs) |
534 | eio_set_max_poll_reqs (unsigned int maxreqs) |
864 | { |
535 | { |
865 | etp_set_max_poll_reqs (maxreqs); |
536 | etp_set_max_poll_reqs (EIO_POOL, maxreqs); |
866 | } |
537 | } |
867 | |
538 | |
868 | void ecb_cold |
539 | void ecb_cold |
869 | eio_set_max_idle (unsigned int nthreads) |
540 | eio_set_max_idle (unsigned int nthreads) |
870 | { |
541 | { |
871 | etp_set_max_idle (nthreads); |
542 | etp_set_max_idle (EIO_POOL, nthreads); |
872 | } |
543 | } |
873 | |
544 | |
874 | void ecb_cold |
545 | void ecb_cold |
875 | eio_set_idle_timeout (unsigned int seconds) |
546 | eio_set_idle_timeout (unsigned int seconds) |
876 | { |
547 | { |
877 | etp_set_idle_timeout (seconds); |
548 | etp_set_idle_timeout (EIO_POOL, seconds); |
878 | } |
549 | } |
879 | |
550 | |
880 | void ecb_cold |
551 | void ecb_cold |
881 | eio_set_min_parallel (unsigned int nthreads) |
552 | eio_set_min_parallel (unsigned int nthreads) |
882 | { |
553 | { |
883 | etp_set_min_parallel (nthreads); |
554 | etp_set_min_parallel (EIO_POOL, nthreads); |
884 | } |
555 | } |
885 | |
556 | |
886 | void ecb_cold |
557 | void ecb_cold |
887 | eio_set_max_parallel (unsigned int nthreads) |
558 | eio_set_max_parallel (unsigned int nthreads) |
888 | { |
559 | { |
889 | etp_set_max_parallel (nthreads); |
560 | etp_set_max_parallel (EIO_POOL, nthreads); |
890 | } |
561 | } |
891 | |
562 | |
892 | int eio_poll (void) |
563 | int eio_poll (void) |
893 | { |
564 | { |
894 | return etp_poll (); |
565 | return etp_poll (EIO_POOL); |
895 | } |
566 | } |
896 | |
567 | |
897 | /*****************************************************************************/ |
568 | /*****************************************************************************/ |
898 | /* work around various missing functions */ |
569 | /* work around various missing functions */ |
899 | |
570 | |
900 | #if !HAVE_PREADWRITE |
571 | #if HAVE_POSIX_CLOSE && !__linux |
901 | # undef pread |
572 | # define eio__close(fd) posix_close (fd, 0) |
902 | # undef pwrite |
573 | #else |
903 | # define pread eio__pread |
574 | # define eio__close(fd) close (fd) |
904 | # define pwrite eio__pwrite |
|
|
905 | |
|
|
906 | static eio_ssize_t |
|
|
907 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
|
|
908 | { |
|
|
909 | eio_ssize_t res; |
|
|
910 | off_t ooffset; |
|
|
911 | |
|
|
912 | X_LOCK (preadwritelock); |
|
|
913 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
914 | lseek (fd, offset, SEEK_SET); |
|
|
915 | res = read (fd, buf, count); |
|
|
916 | lseek (fd, ooffset, SEEK_SET); |
|
|
917 | X_UNLOCK (preadwritelock); |
|
|
918 | |
|
|
919 | return res; |
|
|
920 | } |
|
|
921 | |
|
|
922 | static eio_ssize_t |
|
|
923 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
924 | { |
|
|
925 | eio_ssize_t res; |
|
|
926 | off_t ooffset; |
|
|
927 | |
|
|
928 | X_LOCK (preadwritelock); |
|
|
929 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
930 | lseek (fd, offset, SEEK_SET); |
|
|
931 | res = write (fd, buf, count); |
|
|
932 | lseek (fd, ooffset, SEEK_SET); |
|
|
933 | X_UNLOCK (preadwritelock); |
|
|
934 | |
|
|
935 | return res; |
|
|
936 | } |
|
|
937 | #endif |
575 | #endif |
|
|
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 | } |
938 | |
585 | |
939 | #ifndef HAVE_UTIMES |
586 | #ifndef HAVE_UTIMES |
940 | |
587 | |
941 | # undef utimes |
588 | # undef utimes |
942 | # define utimes(path,times) eio__utimes (path, times) |
589 | # define utimes(path,times) eio__utimes (path, times) |
… | |
… | |
984 | int res; |
631 | int res; |
985 | |
632 | |
986 | #if HAVE_SYS_SYNCFS |
633 | #if HAVE_SYS_SYNCFS |
987 | res = (int)syscall (__NR_syncfs, (int)(fd)); |
634 | res = (int)syscall (__NR_syncfs, (int)(fd)); |
988 | #else |
635 | #else |
989 | res = -1; |
636 | res = EIO_ENOSYS (); |
990 | errno = ENOSYS; |
|
|
991 | #endif |
637 | #endif |
992 | |
638 | |
993 | if (res < 0 && errno == ENOSYS && fd >= 0) |
639 | if (res < 0 && errno == ENOSYS && fd >= 0) |
994 | sync (); |
640 | sync (); |
995 | |
641 | |
… | |
… | |
1025 | } |
671 | } |
1026 | |
672 | |
1027 | static int |
673 | static int |
1028 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
674 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
1029 | { |
675 | { |
1030 | #if HAVE_FALLOCATE |
676 | #if HAVE_LINUX_FALLOCATE |
1031 | return fallocate (fd, mode, offset, len); |
677 | return fallocate (fd, mode, offset, len); |
1032 | #else |
678 | #else |
1033 | errno = ENOSYS; |
679 | return EIO_ENOSYS (); |
1034 | return -1; |
|
|
1035 | #endif |
680 | #endif |
1036 | } |
681 | } |
1037 | |
682 | |
1038 | #if !HAVE_READAHEAD |
683 | #if !HAVE_READAHEAD |
1039 | # undef readahead |
684 | # undef readahead |
… | |
… | |
1054 | todo -= len; |
699 | todo -= len; |
1055 | } |
700 | } |
1056 | |
701 | |
1057 | FUBd; |
702 | FUBd; |
1058 | |
703 | |
1059 | errno = 0; |
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 */ |
1060 | return count; |
706 | return 0; |
1061 | } |
707 | } |
1062 | |
708 | |
1063 | #endif |
709 | #endif |
1064 | |
710 | |
1065 | /* sendfile always needs emulation */ |
711 | /* sendfile always needs emulation */ |
… | |
… | |
1100 | |
746 | |
1101 | /* according to source inspection, this is correct, and useful behaviour */ |
747 | /* according to source inspection, this is correct, and useful behaviour */ |
1102 | if (sbytes) |
748 | if (sbytes) |
1103 | res = sbytes; |
749 | res = sbytes; |
1104 | |
750 | |
1105 | # elif defined (__APPLE__) |
751 | # elif defined __APPLE__ |
1106 | off_t sbytes = count; |
752 | off_t sbytes = count; |
1107 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
753 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
1108 | |
754 | |
1109 | /* according to the manpage, sbytes is always valid */ |
755 | /* according to the manpage, sbytes is always valid */ |
1110 | if (sbytes) |
756 | if (sbytes) |
… | |
… | |
1137 | HANDLE h = TO_SOCKET (ifd); |
783 | HANDLE h = TO_SOCKET (ifd); |
1138 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
784 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
1139 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
785 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
1140 | |
786 | |
1141 | #else |
787 | #else |
1142 | res = -1; |
788 | res = EIO_ENOSYS (); |
1143 | errno = ENOSYS; |
|
|
1144 | #endif |
789 | #endif |
1145 | |
790 | |
1146 | /* we assume sendfile can copy at least 128mb in one go */ |
791 | /* we assume sendfile can copy at least 128mb in one go */ |
1147 | if (res <= 128 * 1024 * 1024) |
792 | if (res <= 128 * 1024 * 1024) |
1148 | { |
793 | { |
… | |
… | |
1257 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
902 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
1258 | extern int mallopt (int, int); |
903 | extern int mallopt (int, int); |
1259 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
904 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
1260 | #endif |
905 | #endif |
1261 | |
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 | |
1262 | if (EIO_MCL_CURRENT != MCL_CURRENT |
913 | if (EIO_MCL_CURRENT != MCL_CURRENT |
1263 | || EIO_MCL_FUTURE != MCL_FUTURE) |
914 | || EIO_MCL_FUTURE != MCL_FUTURE |
|
|
915 | || EIO_MCL_ONFAULT != MCL_ONFAULT) |
1264 | { |
916 | { |
1265 | flags = 0 |
917 | flags = 0 |
1266 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
918 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
1267 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
919 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0) |
|
|
920 | | (flags & EIO_MCL_ONFAULT ? MCL_ONFAULT : 0) |
|
|
921 | ; |
1268 | } |
922 | } |
1269 | |
923 | |
1270 | return mlockall (flags); |
924 | return mlockall (flags); |
1271 | } |
925 | } |
1272 | #endif |
926 | #endif |
… | |
… | |
1323 | intptr_t end = addr + len; |
977 | intptr_t end = addr + len; |
1324 | intptr_t page = eio_pagesize (); |
978 | intptr_t page = eio_pagesize (); |
1325 | |
979 | |
1326 | if (addr < end) |
980 | if (addr < end) |
1327 | if (flags & EIO_MT_MODIFY) /* modify */ |
981 | if (flags & EIO_MT_MODIFY) /* modify */ |
1328 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
982 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
1329 | else |
983 | else |
1330 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
984 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
1331 | } |
985 | } |
1332 | |
986 | |
1333 | return 0; |
987 | return 0; |
1334 | } |
988 | } |
1335 | |
989 | |
1336 | /*****************************************************************************/ |
990 | /*****************************************************************************/ |
1337 | /* requests implemented outside eio_execute, because they are so large */ |
991 | /* requests implemented outside eio_execute, because they are so large */ |
1338 | |
992 | |
1339 | static void |
993 | static void |
1340 | eio__realpath (eio_req *req, etp_worker *self) |
994 | eio__lseek (eio_req *req) |
1341 | { |
995 | { |
1342 | char *rel = req->ptr1; |
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 | { |
1343 | char *res; |
1011 | char *res; |
|
|
1012 | const char *rel = path; |
1344 | char *tmp1, *tmp2; |
1013 | char *tmp1, *tmp2; |
1345 | #if SYMLOOP_MAX > 32 |
1014 | #if SYMLOOP_MAX > 32 |
1346 | int symlinks = SYMLOOP_MAX; |
1015 | int symlinks = SYMLOOP_MAX; |
1347 | #else |
1016 | #else |
1348 | int symlinks = 32; |
1017 | int symlinks = 32; |
1349 | #endif |
1018 | #endif |
1350 | |
1019 | |
1351 | req->result = -1; |
|
|
1352 | |
|
|
1353 | errno = EINVAL; |
1020 | errno = EINVAL; |
1354 | if (!rel) |
1021 | if (!rel) |
1355 | return; |
1022 | return -1; |
1356 | |
1023 | |
1357 | errno = ENOENT; |
1024 | errno = ENOENT; |
1358 | if (!*rel) |
1025 | if (!*rel) |
1359 | return; |
1026 | return -1; |
1360 | |
1027 | |
1361 | if (!req->ptr2) |
1028 | res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3); |
1362 | { |
1029 | #ifdef _WIN32 |
1363 | X_LOCK (wrklock); |
1030 | if (_access (rel, 4) != 0) |
1364 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1365 | X_UNLOCK (wrklock); |
|
|
1366 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1367 | |
|
|
1368 | errno = ENOMEM; |
|
|
1369 | if (!req->ptr2) |
|
|
1370 | return; |
1031 | return -1; |
1371 | } |
|
|
1372 | |
1032 | |
1373 | res = req->ptr2; |
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 |
1374 | tmp1 = res + PATH_MAX; |
1046 | tmp1 = res + EIO_PATH_MAX; |
1375 | tmp2 = tmp1 + PATH_MAX; |
1047 | tmp2 = tmp1 + EIO_PATH_MAX; |
1376 | |
1048 | |
1377 | #if 0 /* disabled, the musl way to do things is just too racy */ |
1049 | #if 0 /* disabled, the musl way to do things is just too racy */ |
1378 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
1050 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
1379 | /* on linux we may be able to ask the kernel */ |
1051 | /* on linux we may be able to ask the kernel */ |
1380 | { |
1052 | { |
1381 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
1053 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
1382 | |
1054 | |
1383 | if (fd >= 0) |
1055 | if (fd >= 0) |
1384 | { |
1056 | { |
1385 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1057 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1386 | req->result = readlink (tmp1, res, PATH_MAX); |
1058 | req->result = readlink (tmp1, res, EIO_PATH_MAX); |
1387 | close (fd); |
|
|
1388 | |
|
|
1389 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1059 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1060 | eio__close (fd); |
1390 | |
1061 | |
1391 | if (req->result > 0) |
1062 | if (req->result > 0) |
1392 | goto done; |
1063 | goto done; |
1393 | } |
1064 | } |
1394 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1065 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1395 | return; |
1066 | return -1; |
1396 | } |
1067 | } |
1397 | #endif |
1068 | #endif |
1398 | #endif |
1069 | #endif |
1399 | |
1070 | |
1400 | if (*rel != '/') |
1071 | if (*rel != '/') |
1401 | { |
1072 | { |
1402 | if (!getcwd (res, PATH_MAX)) |
1073 | int len; |
|
|
1074 | |
|
|
1075 | errno = ENOENT; |
|
|
1076 | if (wd == EIO_INVALID_WD) |
1403 | return; |
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); |
1404 | |
1088 | |
1405 | if (res [1]) /* only use if not / */ |
1089 | if (res [1]) /* only use if not / */ |
1406 | res += strlen (res); |
1090 | res += len; |
1407 | } |
1091 | } |
1408 | |
1092 | |
1409 | while (*rel) |
1093 | while (*rel) |
1410 | { |
1094 | { |
1411 | eio_ssize_t len, linklen; |
1095 | eio_ssize_t len, linklen; |
1412 | char *beg = rel; |
1096 | const char *beg = rel; |
1413 | |
1097 | |
1414 | while (*rel && *rel != '/') |
1098 | while (*rel && *rel != '/') |
1415 | ++rel; |
1099 | ++rel; |
1416 | |
1100 | |
1417 | len = rel - beg; |
1101 | len = rel - beg; |
… | |
… | |
1429 | |
1113 | |
1430 | if (beg [1] == '.' && len == 2) |
1114 | if (beg [1] == '.' && len == 2) |
1431 | { |
1115 | { |
1432 | /* .. - back up one component, if possible */ |
1116 | /* .. - back up one component, if possible */ |
1433 | |
1117 | |
1434 | while (res != req->ptr2) |
1118 | while (res != tmpbuf->ptr) |
1435 | if (*--res == '/') |
1119 | if (*--res == '/') |
1436 | break; |
1120 | break; |
1437 | |
1121 | |
1438 | continue; |
1122 | continue; |
1439 | } |
1123 | } |
1440 | } |
1124 | } |
1441 | |
1125 | |
1442 | errno = ENAMETOOLONG; |
1126 | errno = ENAMETOOLONG; |
1443 | if (res + 1 + len + 1 >= tmp1) |
1127 | if (res + 1 + len + 1 >= tmp1) |
1444 | return; |
1128 | return -1; |
1445 | |
1129 | |
1446 | /* copy one component */ |
1130 | /* copy one component */ |
1447 | *res = '/'; |
1131 | *res = '/'; |
1448 | memcpy (res + 1, beg, len); |
1132 | memcpy (res + 1, beg, len); |
1449 | |
1133 | |
1450 | /* zero-terminate, for readlink */ |
1134 | /* zero-terminate, for readlink */ |
1451 | res [len + 1] = 0; |
1135 | res [len + 1] = 0; |
1452 | |
1136 | |
1453 | /* now check if it's a symlink */ |
1137 | /* now check if it's a symlink */ |
1454 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
1138 | linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX); |
1455 | |
1139 | |
1456 | if (linklen < 0) |
1140 | if (linklen < 0) |
1457 | { |
1141 | { |
1458 | if (errno != EINVAL) |
1142 | if (errno != EINVAL) |
1459 | return; |
1143 | return -1; |
1460 | |
1144 | |
1461 | /* it's a normal directory. hopefully */ |
1145 | /* it's a normal directory. hopefully */ |
1462 | res += len + 1; |
1146 | res += len + 1; |
1463 | } |
1147 | } |
1464 | else |
1148 | else |
1465 | { |
1149 | { |
1466 | /* yay, it was a symlink - build new path in tmp2 */ |
1150 | /* yay, it was a symlink - build new path in tmp2 */ |
1467 | int rellen = strlen (rel); |
1151 | int rellen = strlen (rel); |
1468 | |
1152 | |
1469 | errno = ENAMETOOLONG; |
1153 | errno = ENAMETOOLONG; |
1470 | if (linklen + 1 + rellen >= PATH_MAX) |
1154 | if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */ |
1471 | return; |
1155 | return -1; |
1472 | |
1156 | |
1473 | errno = ELOOP; |
1157 | errno = ELOOP; |
1474 | if (!--symlinks) |
1158 | if (!--symlinks) |
1475 | return; |
1159 | return -1; |
1476 | |
1160 | |
1477 | if (*tmp1 == '/') |
1161 | if (*tmp1 == '/') |
1478 | res = req->ptr2; /* symlink resolves to an absolute path */ |
1162 | res = tmpbuf->ptr; /* symlink resolves to an absolute path */ |
1479 | |
1163 | |
1480 | /* we need to be careful, as rel might point into tmp2 already */ |
1164 | /* we need to be careful, as rel might point into tmp2 already */ |
1481 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
1165 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
1482 | tmp2 [linklen] = '/'; |
1166 | tmp2 [linklen] = '/'; |
1483 | memcpy (tmp2, tmp1, linklen); |
1167 | memcpy (tmp2, tmp1, linklen); |
… | |
… | |
1485 | rel = tmp2; |
1169 | rel = tmp2; |
1486 | } |
1170 | } |
1487 | } |
1171 | } |
1488 | |
1172 | |
1489 | /* special case for the lone root path */ |
1173 | /* special case for the lone root path */ |
1490 | if (res == req->ptr2) |
1174 | if (res == tmpbuf->ptr) |
1491 | *res++ = '/'; |
1175 | *res++ = '/'; |
1492 | |
1176 | |
1493 | req->result = res - (char *)req->ptr2; |
1177 | return res - (char *)tmpbuf->ptr; |
1494 | |
1178 | #endif |
1495 | done: |
|
|
1496 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
|
|
1497 | } |
1179 | } |
1498 | |
1180 | |
1499 | static signed char |
1181 | static signed char |
1500 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1182 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1501 | { |
1183 | { |
… | |
… | |
1689 | #ifdef _WIN32 |
1371 | #ifdef _WIN32 |
1690 | { |
1372 | { |
1691 | int len = strlen ((const char *)req->ptr1); |
1373 | int len = strlen ((const char *)req->ptr1); |
1692 | char *path = malloc (MAX_PATH); |
1374 | char *path = malloc (MAX_PATH); |
1693 | const char *fmt; |
1375 | const char *fmt; |
|
|
1376 | const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1); |
1694 | |
1377 | |
1695 | if (!len) |
1378 | if (!len) |
1696 | fmt = "./*"; |
1379 | fmt = "./*"; |
1697 | else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\') |
1380 | else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\') |
1698 | fmt = "%s*"; |
1381 | fmt = "%s*"; |
1699 | else |
1382 | else |
1700 | fmt = "%s/*"; |
1383 | fmt = "%s/*"; |
1701 | |
1384 | |
1702 | _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1); |
1385 | _snprintf (path, MAX_PATH, fmt, reqpath); |
1703 | dirp = FindFirstFile (path, &entp); |
1386 | dirp = FindFirstFile (path, &entp); |
1704 | free (path); |
1387 | free (path); |
1705 | |
1388 | |
1706 | if (dirp == INVALID_HANDLE_VALUE) |
1389 | if (dirp == INVALID_HANDLE_VALUE) |
1707 | { |
1390 | { |
1708 | dirp = 0; |
|
|
1709 | |
|
|
1710 | /* should steal _dosmaperr */ |
1391 | /* should steal _dosmaperr */ |
1711 | switch (GetLastError ()) |
1392 | switch (GetLastError ()) |
1712 | { |
1393 | { |
1713 | case ERROR_FILE_NOT_FOUND: |
1394 | case ERROR_FILE_NOT_FOUND: |
1714 | req->result = 0; |
1395 | req->result = 0; |
1715 | break; |
1396 | break; |
1716 | |
1397 | |
1717 | case ERROR_INVALID_NAME: |
1398 | case ERROR_INVALID_NAME: |
1718 | case ERROR_PATH_NOT_FOUND: |
1399 | case ERROR_PATH_NOT_FOUND: |
1719 | case ERROR_NO_MORE_FILES: |
1400 | case ERROR_NO_MORE_FILES: |
1720 | errno = ENOENT; |
1401 | errno = ENOENT; |
1721 | break; |
1402 | break; |
1722 | |
1403 | |
1723 | case ERROR_NOT_ENOUGH_MEMORY: |
1404 | case ERROR_NOT_ENOUGH_MEMORY: |
1724 | errno = ENOMEM; |
1405 | errno = ENOMEM; |
1725 | break; |
1406 | break; |
1726 | |
1407 | |
1727 | default: |
1408 | default: |
1728 | errno = EINVAL; |
1409 | errno = EINVAL; |
1729 | break; |
1410 | break; |
1730 | } |
1411 | } |
|
|
1412 | |
|
|
1413 | return; |
1731 | } |
1414 | } |
1732 | } |
1415 | } |
1733 | #else |
1416 | #else |
1734 | dirp = opendir (req->ptr1); |
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 |
1735 | #endif |
1438 | #endif |
1736 | |
1439 | |
1737 | if (req->flags & EIO_FLAG_PTR1_FREE) |
1440 | if (req->flags & EIO_FLAG_PTR1_FREE) |
1738 | free (req->ptr1); |
1441 | free (req->ptr1); |
1739 | |
1442 | |
1740 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1443 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1741 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1444 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1742 | req->ptr2 = names = malloc (namesalloc); |
1445 | req->ptr2 = names = malloc (namesalloc); |
1743 | |
1446 | |
1744 | if (dirp && names && (!flags || dents)) |
1447 | if (!names || (flags && !dents)) |
|
|
1448 | return; |
|
|
1449 | |
1745 | for (;;) |
1450 | for (;;) |
1746 | { |
1451 | { |
1747 | int done; |
1452 | int done; |
1748 | |
1453 | |
1749 | #ifdef _WIN32 |
1454 | #ifdef _WIN32 |
1750 | done = !dirp; |
1455 | done = !dirp; |
1751 | #else |
1456 | #else |
1752 | errno = 0; |
1457 | errno = 0; |
1753 | entp = readdir (dirp); |
1458 | entp = readdir (dirp); |
1754 | done = !entp; |
1459 | done = !entp; |
1755 | #endif |
1460 | #endif |
1756 | |
1461 | |
1757 | if (done) |
1462 | if (done) |
1758 | { |
1463 | { |
1759 | #ifndef _WIN32 |
1464 | #ifndef _WIN32 |
1760 | int old_errno = errno; |
1465 | int old_errno = errno; |
1761 | closedir (dirp); |
1466 | closedir (dirp); |
1762 | errno = old_errno; |
1467 | errno = old_errno; |
1763 | |
1468 | |
1764 | if (errno) |
1469 | if (errno) |
1765 | break; |
1470 | break; |
1766 | #endif |
1471 | #endif |
1767 | |
1472 | |
1768 | /* sort etc. */ |
1473 | /* sort etc. */ |
1769 | req->int1 = flags; |
1474 | req->int1 = flags; |
1770 | req->result = dentoffs; |
1475 | req->result = dentoffs; |
1771 | |
1476 | |
1772 | if (flags & EIO_READDIR_STAT_ORDER) |
1477 | if (flags & EIO_READDIR_STAT_ORDER) |
1773 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
1478 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
1774 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1479 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1775 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1480 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1776 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1481 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1777 | else |
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 | |
|
|
1506 | break; |
|
|
1507 | } |
|
|
1508 | |
|
|
1509 | /* now add the entry to our list(s) */ |
|
|
1510 | name = D_NAME (entp); |
|
|
1511 | |
|
|
1512 | /* skip . and .. entries */ |
|
|
1513 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
1514 | { |
|
|
1515 | int len = D_NAMLEN (entp) + 1; |
|
|
1516 | |
|
|
1517 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
|
|
1518 | { |
|
|
1519 | namesalloc *= 2; |
|
|
1520 | req->ptr2 = names = realloc (names, namesalloc); |
|
|
1521 | |
|
|
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)) |
1778 | { |
1533 | { |
1779 | /* in this case, all is known, and we just put dirs first and sort them */ |
1534 | dentalloc *= 2; |
|
|
1535 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1536 | |
|
|
1537 | if (!dents) |
|
|
1538 | break; |
|
|
1539 | } |
|
|
1540 | |
1780 | eio_dirent *oth = dents + dentoffs; |
1541 | ent = dents + dentoffs; |
1781 | eio_dirent *dir = dents; |
|
|
1782 | |
1542 | |
1783 | /* now partition dirs to the front, and non-dirs to the back */ |
1543 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
1784 | /* by walking from both sides and swapping if necessary */ |
1544 | ent->namelen = len - 1; |
1785 | while (oth > dir) |
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) |
1786 | { |
1605 | { |
1787 | if (dir->type == EIO_DT_DIR) |
1606 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
1788 | ++dir; |
1607 | ent->score = 1; |
1789 | else if ((--oth)->type == EIO_DT_DIR) |
1608 | else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */ |
1790 | { |
1609 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
1791 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1792 | |
|
|
1793 | ++dir; |
|
|
1794 | } |
|
|
1795 | } |
1610 | } |
1796 | |
1611 | else if (ent->type == EIO_DT_DIR) |
1797 | /* now sort the dirs only (dirs all have the same score) */ |
1612 | ent->score = 0; |
1798 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1799 | } |
1613 | } |
1800 | |
|
|
1801 | break; |
|
|
1802 | } |
|
|
1803 | |
|
|
1804 | /* now add the entry to our list(s) */ |
|
|
1805 | name = D_NAME (entp); |
|
|
1806 | |
|
|
1807 | /* skip . and .. entries */ |
|
|
1808 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
1809 | { |
|
|
1810 | int len = D_NAMLEN (entp) + 1; |
|
|
1811 | |
|
|
1812 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
|
|
1813 | { |
|
|
1814 | namesalloc *= 2; |
|
|
1815 | req->ptr2 = names = realloc (names, namesalloc); |
|
|
1816 | |
|
|
1817 | if (!names) |
|
|
1818 | break; |
|
|
1819 | } |
1614 | } |
1820 | |
1615 | |
1821 | memcpy (names + namesoffs, name, len); |
|
|
1822 | |
|
|
1823 | if (dents) |
|
|
1824 | { |
|
|
1825 | struct eio_dirent *ent; |
|
|
1826 | |
|
|
1827 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1828 | { |
|
|
1829 | dentalloc *= 2; |
|
|
1830 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1831 | |
|
|
1832 | if (!dents) |
|
|
1833 | break; |
|
|
1834 | } |
|
|
1835 | |
|
|
1836 | ent = dents + dentoffs; |
|
|
1837 | |
|
|
1838 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1839 | ent->namelen = len - 1; |
|
|
1840 | ent->inode = D_INO (entp); |
|
|
1841 | |
|
|
1842 | inode_bits |= ent->inode; |
|
|
1843 | |
|
|
1844 | switch (D_TYPE (entp)) |
|
|
1845 | { |
|
|
1846 | default: |
|
|
1847 | ent->type = EIO_DT_UNKNOWN; |
|
|
1848 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1849 | break; |
|
|
1850 | |
|
|
1851 | #ifdef DT_FIFO |
|
|
1852 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1853 | #endif |
|
|
1854 | #ifdef DT_CHR |
|
|
1855 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1856 | #endif |
|
|
1857 | #ifdef DT_MPC |
|
|
1858 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1859 | #endif |
|
|
1860 | #ifdef DT_DIR |
|
|
1861 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1862 | #endif |
|
|
1863 | #ifdef DT_NAM |
|
|
1864 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1865 | #endif |
|
|
1866 | #ifdef DT_BLK |
|
|
1867 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1868 | #endif |
|
|
1869 | #ifdef DT_MPB |
|
|
1870 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1871 | #endif |
|
|
1872 | #ifdef DT_REG |
|
|
1873 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1874 | #endif |
|
|
1875 | #ifdef DT_NWK |
|
|
1876 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1877 | #endif |
|
|
1878 | #ifdef DT_CMP |
|
|
1879 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1880 | #endif |
|
|
1881 | #ifdef DT_LNK |
|
|
1882 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1883 | #endif |
|
|
1884 | #ifdef DT_SOCK |
|
|
1885 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1886 | #endif |
|
|
1887 | #ifdef DT_DOOR |
|
|
1888 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1889 | #endif |
|
|
1890 | #ifdef DT_WHT |
|
|
1891 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1892 | #endif |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | ent->score = 7; |
|
|
1896 | |
|
|
1897 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1898 | { |
|
|
1899 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1900 | { |
|
|
1901 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1902 | ent->score = 1; |
|
|
1903 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1904 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1905 | } |
|
|
1906 | else if (ent->type == EIO_DT_DIR) |
|
|
1907 | ent->score = 0; |
|
|
1908 | } |
|
|
1909 | } |
|
|
1910 | |
|
|
1911 | namesoffs += len; |
1616 | namesoffs += len; |
1912 | ++dentoffs; |
1617 | ++dentoffs; |
1913 | } |
1618 | } |
1914 | |
1619 | |
1915 | if (EIO_CANCELLED (req)) |
1620 | if (EIO_CANCELLED (req)) |
1916 | { |
1621 | { |
1917 | errno = ECANCELED; |
1622 | errno = ECANCELED; |
1918 | break; |
1623 | break; |
1919 | } |
1624 | } |
1920 | |
1625 | |
1921 | #ifdef _WIN32 |
1626 | #ifdef _WIN32 |
1922 | if (!FindNextFile (dirp, &entp)) |
1627 | if (!FindNextFile (dirp, &entp)) |
1923 | { |
1628 | { |
1924 | FindClose (dirp); |
1629 | FindClose (dirp); |
1925 | dirp = 0; |
1630 | dirp = 0; |
1926 | } |
1631 | } |
1927 | #endif |
1632 | #endif |
1928 | } |
1633 | } |
1929 | } |
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 | |
|
|
1655 | { |
|
|
1656 | int l1 = wd->len; |
|
|
1657 | int l2 = strlen (path); |
|
|
1658 | |
|
|
1659 | char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2); |
|
|
1660 | |
|
|
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 | if (fd < 0) |
|
|
1685 | return EIO_INVALID_WD; |
|
|
1686 | #endif |
|
|
1687 | |
|
|
1688 | res = malloc (sizeof (*res) + len); /* one extra 0-byte */ |
|
|
1689 | |
|
|
1690 | #if HAVE_AT |
|
|
1691 | res->fd = fd; |
|
|
1692 | #endif |
|
|
1693 | |
|
|
1694 | res->len = len; |
|
|
1695 | memcpy (res->str, tmpbuf->ptr, len); |
|
|
1696 | res->str [len] = 0; |
|
|
1697 | |
|
|
1698 | return res; |
|
|
1699 | } |
|
|
1700 | |
|
|
1701 | eio_wd |
|
|
1702 | eio_wd_open_sync (eio_wd wd, const char *path) |
|
|
1703 | { |
|
|
1704 | struct etp_tmpbuf tmpbuf = { 0 }; |
|
|
1705 | wd = eio__wd_open_sync (&tmpbuf, wd, path); |
|
|
1706 | free (tmpbuf.ptr); |
|
|
1707 | |
|
|
1708 | return wd; |
|
|
1709 | } |
|
|
1710 | |
|
|
1711 | void |
|
|
1712 | eio_wd_close_sync (eio_wd wd) |
|
|
1713 | { |
|
|
1714 | if (wd != EIO_INVALID_WD && wd != EIO_CWD) |
|
|
1715 | { |
|
|
1716 | #if HAVE_AT |
|
|
1717 | eio__close (wd->fd); |
|
|
1718 | #endif |
|
|
1719 | free (wd); |
|
|
1720 | } |
|
|
1721 | } |
|
|
1722 | |
|
|
1723 | #if HAVE_AT |
|
|
1724 | |
|
|
1725 | static int |
|
|
1726 | eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags) |
|
|
1727 | { |
|
|
1728 | #if HAVE_RENAMEAT2 |
|
|
1729 | return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags); |
|
|
1730 | #else |
|
|
1731 | if (flags) |
|
|
1732 | return EIO_ENOSYS (); |
|
|
1733 | |
|
|
1734 | return renameat (olddirfd, oldpath, newdirfd, newpath); |
|
|
1735 | #endif |
|
|
1736 | } |
|
|
1737 | |
|
|
1738 | /* they forgot these */ |
|
|
1739 | |
|
|
1740 | static int |
|
|
1741 | eio__truncateat (int dirfd, const char *path, off_t length) |
|
|
1742 | { |
|
|
1743 | int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC | O_NONBLOCK); |
|
|
1744 | int res; |
|
|
1745 | |
|
|
1746 | if (fd < 0) |
|
|
1747 | return fd; |
|
|
1748 | |
|
|
1749 | res = ftruncate (fd, length); |
|
|
1750 | silent_close (fd); |
|
|
1751 | return res; |
|
|
1752 | } |
|
|
1753 | |
|
|
1754 | static int |
|
|
1755 | eio__statvfsat (int dirfd, const char *path, struct statvfs *buf) |
|
|
1756 | { |
|
|
1757 | int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC | O_NONBLOCK); |
|
|
1758 | int res; |
|
|
1759 | |
|
|
1760 | if (fd < 0) |
|
|
1761 | return fd; |
|
|
1762 | |
|
|
1763 | res = fstatvfs (fd, buf); |
|
|
1764 | silent_close (fd); |
|
|
1765 | return res; |
|
|
1766 | } |
|
|
1767 | |
|
|
1768 | #endif |
1930 | |
1769 | |
1931 | /*****************************************************************************/ |
1770 | /*****************************************************************************/ |
1932 | |
1771 | |
1933 | #define ALLOC(len) \ |
1772 | #define ALLOC(len) \ |
1934 | if (!req->ptr2) \ |
1773 | if (!req->ptr2) \ |
1935 | { \ |
1774 | { \ |
1936 | X_LOCK (wrklock); \ |
1775 | X_LOCK (EIO_POOL->wrklock); \ |
1937 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
1776 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
1938 | X_UNLOCK (wrklock); \ |
1777 | X_UNLOCK (EIO_POOL->wrklock); \ |
1939 | req->ptr2 = malloc (len); \ |
1778 | req->ptr2 = malloc (len); \ |
1940 | if (!req->ptr2) \ |
1779 | if (!req->ptr2) \ |
1941 | { \ |
1780 | { \ |
1942 | errno = ENOMEM; \ |
1781 | errno = ENOMEM; \ |
1943 | req->result = -1; \ |
1782 | req->result = -1; \ |
1944 | break; \ |
1783 | goto alloc_fail; \ |
1945 | } \ |
1784 | } \ |
1946 | } |
1785 | } |
1947 | |
1786 | |
1948 | X_THREAD_PROC (etp_proc) |
1787 | /*****************************************************************************/ |
1949 | { |
|
|
1950 | ETP_REQ *req; |
|
|
1951 | struct timespec ts; |
|
|
1952 | etp_worker *self = (etp_worker *)thr_arg; |
|
|
1953 | |
1788 | |
1954 | #if HAVE_PRCTL_SET_NAME |
1789 | static void |
1955 | prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0); |
1790 | eio__slurp (int fd, eio_req *req) |
1956 | #endif |
1791 | { |
|
|
1792 | req->result = fd; |
1957 | |
1793 | |
1958 | /* try to distribute timeouts somewhat evenly */ |
1794 | if (fd < 0) |
1959 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1795 | return; |
1960 | |
1796 | |
1961 | for (;;) |
1797 | if (req->offs < 0 || !req->size) /* do we need the size? */ |
1962 | { |
1798 | { |
1963 | ts.tv_sec = 0; |
1799 | off_t size = lseek (fd, 0, SEEK_END); |
1964 | |
1800 | |
1965 | X_LOCK (reqlock); |
|
|
1966 | |
|
|
1967 | for (;;) |
|
|
1968 | { |
|
|
1969 | self->req = req = reqq_shift (&req_queue); |
|
|
1970 | |
|
|
1971 | if (req) |
|
|
1972 | break; |
|
|
1973 | |
|
|
1974 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
1975 | { |
|
|
1976 | X_UNLOCK (reqlock); |
|
|
1977 | X_LOCK (wrklock); |
|
|
1978 | --started; |
|
|
1979 | X_UNLOCK (wrklock); |
|
|
1980 | goto quit; |
|
|
1981 | } |
|
|
1982 | |
|
|
1983 | ++idle; |
|
|
1984 | |
|
|
1985 | if (idle <= max_idle) |
|
|
1986 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1987 | X_COND_WAIT (reqwait, reqlock); |
|
|
1988 | else |
|
|
1989 | { |
|
|
1990 | /* initialise timeout once */ |
|
|
1991 | if (!ts.tv_sec) |
|
|
1992 | ts.tv_sec = time (0) + idle_timeout; |
|
|
1993 | |
|
|
1994 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1995 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
|
|
1996 | } |
|
|
1997 | |
|
|
1998 | --idle; |
|
|
1999 | } |
|
|
2000 | |
|
|
2001 | --nready; |
|
|
2002 | |
|
|
2003 | X_UNLOCK (reqlock); |
|
|
2004 | |
|
|
2005 | if (req->type < 0) |
1801 | if (req->offs < 0) |
2006 | goto quit; |
1802 | req->offs += size; |
2007 | |
1803 | |
2008 | ETP_EXECUTE (self, req); |
1804 | if (!req->size) |
2009 | |
1805 | req->size = size - req->offs; |
2010 | X_LOCK (reslock); |
|
|
2011 | |
|
|
2012 | ++npending; |
|
|
2013 | |
|
|
2014 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
2015 | want_poll_cb (); |
|
|
2016 | |
|
|
2017 | self->req = 0; |
|
|
2018 | etp_worker_clear (self); |
|
|
2019 | |
|
|
2020 | X_UNLOCK (reslock); |
|
|
2021 | } |
1806 | } |
2022 | |
1807 | |
2023 | quit: |
1808 | ALLOC (req->size); |
2024 | X_LOCK (wrklock); |
1809 | req->result = pread (fd, req->ptr2, req->size, req->offs); |
2025 | etp_worker_free (self); |
|
|
2026 | X_UNLOCK (wrklock); |
|
|
2027 | |
1810 | |
2028 | return 0; |
1811 | silent_close (fd); |
2029 | } |
|
|
2030 | |
1812 | |
2031 | /*****************************************************************************/ |
1813 | alloc_fail: |
|
|
1814 | ; |
|
|
1815 | } |
2032 | |
1816 | |
2033 | int ecb_cold |
1817 | int ecb_cold |
2034 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1818 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2035 | { |
1819 | { |
2036 | #if !HAVE_PREADWRITE |
1820 | eio_want_poll_cb = want_poll; |
2037 | X_MUTEX_CREATE (preadwritelock); |
1821 | eio_done_poll_cb = done_poll; |
2038 | #endif |
|
|
2039 | |
1822 | |
2040 | return etp_init (want_poll, done_poll); |
1823 | return etp_init (EIO_POOL, 0, 0, 0); |
2041 | } |
1824 | } |
2042 | |
1825 | |
2043 | ecb_inline void |
1826 | ecb_inline void |
2044 | eio_api_destroy (eio_req *req) |
1827 | eio_api_destroy (eio_req *req) |
2045 | { |
1828 | { |
2046 | free (req); |
1829 | free (req); |
2047 | } |
1830 | } |
2048 | |
1831 | |
2049 | #define REQ(rtype) \ |
1832 | #define REQ(rtype) \ |
2050 | eio_req *req; \ |
1833 | eio_req *req; \ |
2051 | \ |
1834 | \ |
2052 | req = (eio_req *)calloc (1, sizeof *req); \ |
1835 | req = (eio_req *)calloc (1, sizeof *req); \ |
2053 | if (!req) \ |
1836 | if (!req) \ |
2054 | return 0; \ |
1837 | return 0; \ |
… | |
… | |
2068 | { \ |
1851 | { \ |
2069 | eio_api_destroy (req); \ |
1852 | eio_api_destroy (req); \ |
2070 | return 0; \ |
1853 | return 0; \ |
2071 | } |
1854 | } |
2072 | |
1855 | |
|
|
1856 | #define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)]) |
|
|
1857 | |
2073 | static void |
1858 | static void |
2074 | eio_execute (etp_worker *self, eio_req *req) |
1859 | eio_execute (etp_worker *self, eio_req *req) |
2075 | { |
1860 | { |
|
|
1861 | #if HAVE_AT |
|
|
1862 | int dirfd; |
|
|
1863 | #else |
|
|
1864 | const char *path; |
|
|
1865 | #endif |
|
|
1866 | |
2076 | if (ecb_expect_false (EIO_CANCELLED (req))) |
1867 | if (ecb_expect_false (EIO_CANCELLED (req))) |
2077 | { |
1868 | { |
2078 | req->result = -1; |
1869 | req->result = -1; |
2079 | req->errorno = ECANCELED; |
1870 | req->errorno = ECANCELED; |
2080 | return; |
1871 | return; |
2081 | } |
1872 | } |
2082 | |
1873 | |
|
|
1874 | if (ecb_expect_false (req->wd == EIO_INVALID_WD)) |
|
|
1875 | { |
|
|
1876 | req->result = -1; |
|
|
1877 | req->errorno = ENOENT; |
|
|
1878 | return; |
|
|
1879 | } |
|
|
1880 | |
|
|
1881 | if (req->type >= EIO_OPEN) |
|
|
1882 | { |
|
|
1883 | #if HAVE_AT |
|
|
1884 | dirfd = WD2FD (req->wd); |
|
|
1885 | #else |
|
|
1886 | path = wd_expand (&self->tmpbuf, req->wd, req->ptr1); |
|
|
1887 | #endif |
|
|
1888 | } |
|
|
1889 | |
2083 | switch (req->type) |
1890 | switch (req->type) |
2084 | { |
1891 | { |
|
|
1892 | case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1); |
|
|
1893 | req->result = req->wd == EIO_INVALID_WD ? -1 : 0; |
|
|
1894 | break; |
|
|
1895 | case EIO_WD_CLOSE: req->result = 0; |
|
|
1896 | eio_wd_close_sync (req->wd); break; |
|
|
1897 | |
|
|
1898 | case EIO_SEEK: eio__lseek (req); break; |
2085 | case EIO_READ: ALLOC (req->size); |
1899 | case EIO_READ: ALLOC (req->size); |
2086 | req->result = req->offs >= 0 |
1900 | req->result = req->offs >= 0 |
2087 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1901 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
2088 | : read (req->int1, req->ptr2, req->size); break; |
1902 | : read (req->int1, req->ptr2, req->size); break; |
2089 | case EIO_WRITE: req->result = req->offs >= 0 |
1903 | case EIO_WRITE: req->result = req->offs >= 0 |
2090 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1904 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
2091 | : write (req->int1, req->ptr2, req->size); break; |
1905 | : write (req->int1, req->ptr2, req->size); break; |
2092 | |
1906 | |
|
|
1907 | case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break; |
|
|
1908 | case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break; |
|
|
1909 | |
2093 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1910 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
2094 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
1911 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
2095 | |
1912 | |
|
|
1913 | #if HAVE_AT |
|
|
1914 | |
2096 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1915 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2097 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1916 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break; |
2098 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1917 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1918 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break; |
|
|
1919 | case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break; |
|
|
1920 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
|
|
1921 | case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break; |
|
|
1922 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
1923 | case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break; |
|
|
1924 | |
|
|
1925 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
|
|
1926 | case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */ |
|
|
1927 | req->result = req->wd && SINGLEDOT (req->ptr1) |
|
|
1928 | ? rmdir (req->wd->str) |
|
|
1929 | : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
|
|
1930 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
|
|
1931 | case EIO_RENAME: req->result = eio__renameat2 ( |
|
|
1932 | dirfd, |
|
|
1933 | /* complications arise because "." cannot be renamed, so we might have to expand */ |
|
|
1934 | req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1, |
|
|
1935 | WD2FD ((eio_wd)req->int3), |
|
|
1936 | req->ptr2, |
|
|
1937 | req->int2 |
|
|
1938 | ); |
|
|
1939 | break; |
|
|
1940 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
|
|
1941 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
|
|
1942 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
1943 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1944 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1945 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
1946 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX); |
|
|
1947 | if (req->result == EIO_PATH_MAX) |
|
|
1948 | { |
|
|
1949 | req->result = -1; |
|
|
1950 | errno = ENAMETOOLONG; |
|
|
1951 | } |
|
|
1952 | break; |
|
|
1953 | case EIO_UTIME: |
|
|
1954 | case EIO_FUTIME: |
|
|
1955 | { |
|
|
1956 | struct timespec ts[2]; |
|
|
1957 | struct timespec *times; |
|
|
1958 | |
|
|
1959 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
1960 | { |
|
|
1961 | ts[0].tv_sec = req->nv1; |
|
|
1962 | ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9; |
|
|
1963 | ts[1].tv_sec = req->nv2; |
|
|
1964 | ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9; |
|
|
1965 | |
|
|
1966 | times = ts; |
|
|
1967 | } |
|
|
1968 | else |
|
|
1969 | times = 0; |
|
|
1970 | |
|
|
1971 | req->result = req->type == EIO_FUTIME |
|
|
1972 | ? futimens (req->int1, times) |
|
|
1973 | : utimensat (dirfd, req->ptr1, times, 0); |
|
|
1974 | } |
|
|
1975 | break; |
|
|
1976 | |
|
|
1977 | #else |
|
|
1978 | |
|
|
1979 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
|
|
1980 | req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1981 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2099 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1982 | req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
1983 | case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break; |
|
|
1984 | case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break; |
|
|
1985 | case EIO_TRUNCATE: req->result = truncate (path , req->offs); break; |
|
|
1986 | case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break; |
|
|
1987 | case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break; |
|
|
1988 | |
|
|
1989 | case EIO_UNLINK: req->result = unlink (path ); break; |
|
|
1990 | case EIO_RMDIR: req->result = rmdir (path ); break; |
|
|
1991 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
|
|
1992 | case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break; |
|
|
1993 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
|
|
1994 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
|
|
1995 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
1996 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1997 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1998 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
1999 | req->result = readlink (path, req->ptr2, EIO_PATH_MAX); |
|
|
2000 | if (req->result == EIO_PATH_MAX) |
|
|
2001 | { |
|
|
2002 | req->result = -1; |
|
|
2003 | errno = ENAMETOOLONG; |
|
|
2004 | } |
|
|
2005 | break; |
|
|
2006 | |
|
|
2007 | case EIO_UTIME: |
|
|
2008 | case EIO_FUTIME: |
|
|
2009 | { |
|
|
2010 | struct timeval tv[2]; |
|
|
2011 | struct timeval *times; |
|
|
2012 | |
|
|
2013 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
2014 | { |
|
|
2015 | tv[0].tv_sec = req->nv1; |
|
|
2016 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6; |
|
|
2017 | tv[1].tv_sec = req->nv2; |
|
|
2018 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6; |
|
|
2019 | |
|
|
2020 | times = tv; |
|
|
2021 | } |
|
|
2022 | else |
|
|
2023 | times = 0; |
|
|
2024 | |
|
|
2025 | req->result = req->type == EIO_FUTIME |
|
|
2026 | ? futimes (req->int1, times) |
|
|
2027 | : utimes (req->ptr1, times); |
|
|
2028 | } |
|
|
2029 | break; |
|
|
2030 | |
|
|
2031 | #endif |
|
|
2032 | |
|
|
2033 | case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1))) |
|
|
2034 | { |
|
|
2035 | ALLOC (req->result); |
|
|
2036 | memcpy (req->ptr2, self->tmpbuf.ptr, req->result); |
|
|
2037 | } |
|
|
2038 | break; |
|
|
2039 | |
2100 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2040 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2101 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2041 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2102 | |
2042 | |
2103 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2104 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2105 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
2043 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
2106 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
2044 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
2107 | |
2045 | |
2108 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
|
|
2109 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2046 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2110 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
|
|
2111 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2047 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2112 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
|
|
2113 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
2048 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
2114 | |
2049 | |
2115 | case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
2116 | case EIO_CLOSE: req->result = close (req->int1); break; |
2050 | case EIO_CLOSE: req->result = eio__close (req->int1); break; |
2117 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
2051 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
2118 | case EIO_UNLINK: req->result = unlink (req->ptr1); break; |
|
|
2119 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
|
|
2120 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
|
|
2121 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
|
|
2122 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
|
|
2123 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
|
|
2124 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
|
|
2125 | |
|
|
2126 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
2127 | |
|
|
2128 | case EIO_READLINK: ALLOC (PATH_MAX); |
|
|
2129 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
|
|
2130 | |
|
|
2131 | case EIO_SYNC: req->result = 0; sync (); break; |
2052 | case EIO_SYNC: req->result = 0; sync (); break; |
2132 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2053 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2133 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2054 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2134 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
2055 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
2135 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
2056 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
… | |
… | |
2154 | req->result = select (0, 0, 0, 0, &tv); |
2075 | req->result = select (0, 0, 0, 0, &tv); |
2155 | } |
2076 | } |
2156 | #endif |
2077 | #endif |
2157 | break; |
2078 | break; |
2158 | |
2079 | |
2159 | case EIO_UTIME: |
2080 | #if 0 |
2160 | case EIO_FUTIME: |
|
|
2161 | { |
|
|
2162 | struct timeval tv[2]; |
|
|
2163 | struct timeval *times; |
|
|
2164 | |
|
|
2165 | if (req->nv1 != -1. || req->nv2 != -1.) |
|
|
2166 | { |
|
|
2167 | tv[0].tv_sec = req->nv1; |
|
|
2168 | tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
|
|
2169 | tv[1].tv_sec = req->nv2; |
|
|
2170 | tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
|
|
2171 | |
|
|
2172 | times = tv; |
|
|
2173 | } |
|
|
2174 | else |
|
|
2175 | times = 0; |
|
|
2176 | |
|
|
2177 | req->result = req->type == EIO_FUTIME |
|
|
2178 | ? futimes (req->int1, times) |
|
|
2179 | : utimes (req->ptr1, times); |
|
|
2180 | } |
|
|
2181 | break; |
|
|
2182 | |
|
|
2183 | case EIO_GROUP: |
2081 | case EIO_GROUP: |
2184 | abort (); /* handled in eio_request */ |
2082 | abort (); /* handled in eio_request */ |
|
|
2083 | #endif |
2185 | |
2084 | |
2186 | case EIO_NOP: |
2085 | case EIO_NOP: |
2187 | req->result = 0; |
2086 | req->result = 0; |
2188 | break; |
2087 | break; |
2189 | |
2088 | |
2190 | case EIO_CUSTOM: |
2089 | case EIO_CUSTOM: |
2191 | req->feed (req); |
2090 | req->feed (req); |
2192 | break; |
2091 | break; |
2193 | |
2092 | |
2194 | default: |
2093 | default: |
2195 | errno = ENOSYS; |
|
|
2196 | req->result = -1; |
2094 | req->result = EIO_ENOSYS (); |
2197 | break; |
2095 | break; |
2198 | } |
2096 | } |
2199 | |
2097 | |
|
|
2098 | alloc_fail: |
2200 | req->errorno = errno; |
2099 | req->errorno = errno; |
2201 | } |
2100 | } |
2202 | |
2101 | |
2203 | #ifndef EIO_NO_WRAPPERS |
2102 | #ifndef EIO_NO_WRAPPERS |
2204 | |
2103 | |
|
|
2104 | eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data) |
|
|
2105 | { |
|
|
2106 | REQ (EIO_WD_OPEN); PATH; SEND; |
|
|
2107 | } |
|
|
2108 | |
|
|
2109 | eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data) |
|
|
2110 | { |
|
|
2111 | REQ (EIO_WD_CLOSE); req->wd = wd; SEND; |
|
|
2112 | } |
|
|
2113 | |
2205 | eio_req *eio_nop (int pri, eio_cb cb, void *data) |
2114 | eio_req *eio_nop (int pri, eio_cb cb, void *data) |
2206 | { |
2115 | { |
2207 | REQ (EIO_NOP); SEND; |
2116 | REQ (EIO_NOP); SEND; |
2208 | } |
2117 | } |
2209 | |
2118 | |
… | |
… | |
2270 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
2179 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) |
2271 | { |
2180 | { |
2272 | REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
2181 | REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; |
2273 | } |
2182 | } |
2274 | |
2183 | |
|
|
2184 | eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data) |
|
|
2185 | { |
|
|
2186 | REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND; |
|
|
2187 | } |
|
|
2188 | |
2275 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2189 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2276 | { |
2190 | { |
2277 | REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
2191 | REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
2278 | } |
2192 | } |
2279 | |
2193 | |
2280 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2194 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2281 | { |
2195 | { |
2282 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
2196 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
2197 | } |
|
|
2198 | |
|
|
2199 | eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data) |
|
|
2200 | { |
|
|
2201 | REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND; |
|
|
2202 | } |
|
|
2203 | |
|
|
2204 | eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data) |
|
|
2205 | { |
|
|
2206 | REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND; |
2283 | } |
2207 | } |
2284 | |
2208 | |
2285 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2209 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2286 | { |
2210 | { |
2287 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2211 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
… | |
… | |
2432 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2356 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2433 | { |
2357 | { |
2434 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2358 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2435 | } |
2359 | } |
2436 | |
2360 | |
|
|
2361 | eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
|
|
2362 | { |
|
|
2363 | REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
2364 | } |
|
|
2365 | |
2437 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2366 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2438 | { |
2367 | { |
2439 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2368 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2440 | } |
2369 | } |
2441 | |
2370 | |
… | |
… | |
2475 | void |
2404 | void |
2476 | eio_grp_add (eio_req *grp, eio_req *req) |
2405 | eio_grp_add (eio_req *grp, eio_req *req) |
2477 | { |
2406 | { |
2478 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2407 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2479 | |
2408 | |
2480 | grp->flags |= EIO_FLAG_GROUPADD; |
2409 | grp->flags |= ETP_FLAG_GROUPADD; |
2481 | |
2410 | |
2482 | ++grp->size; |
2411 | ++grp->size; |
2483 | req->grp = grp; |
2412 | req->grp = grp; |
2484 | |
2413 | |
2485 | req->grp_prev = 0; |
2414 | req->grp_prev = 0; |