1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017 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 X_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> |
… | |
… | |
120 | #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)) |
121 | |
116 | |
122 | #define chmod(path,mode) _chmod (path, mode) |
117 | #define chmod(path,mode) _chmod (path, mode) |
123 | #define dup(fd) _dup (fd) |
118 | #define dup(fd) _dup (fd) |
124 | #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) |
125 | |
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 () |
126 | #define fchmod(fd,mode) EIO_ENOSYS () |
124 | #define fchmod(fd,mode) EIO_ENOSYS () |
127 | #define chown(path,uid,gid) EIO_ENOSYS () |
125 | #define chown(path,uid,gid) EIO_ENOSYS () |
128 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
126 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
129 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
127 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
130 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
128 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
131 | #define mknod(path,mode,dev) EIO_ENOSYS () |
129 | #define mknod(path,mode,dev) EIO_ENOSYS () |
132 | #define sync() EIO_ENOSYS () |
130 | #define sync() EIO_ENOSYS () |
133 | #define readlink(path,buf,s) EIO_ENOSYS () |
131 | #define readlink(path,buf,s) EIO_ENOSYS () |
134 | #define statvfs(path,buf) EIO_ENOSYS () |
132 | #define statvfs(path,buf) EIO_ENOSYS () |
135 | #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 | } |
136 | |
169 | |
137 | /* rename() uses MoveFile, which fails to overwrite */ |
170 | /* rename() uses MoveFile, which fails to overwrite */ |
138 | #define rename(old,neu) eio__rename (old, neu) |
171 | #define rename(old,neu) eio__rename (old, neu) |
139 | |
172 | |
140 | static int |
173 | static int |
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168 | /* we could even stat and see if it exists */ |
201 | /* we could even stat and see if it exists */ |
169 | static int |
202 | static int |
170 | symlink (const char *old, const char *neu) |
203 | symlink (const char *old, const char *neu) |
171 | { |
204 | { |
172 | #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) |
173 | if (CreateSymbolicLink (neu, old, 1)) |
213 | if (CreateSymbolicLink (neu, old, flags)) |
174 | return 0; |
214 | return 0; |
175 | |
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176 | if (CreateSymbolicLink (neu, old, 0)) |
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177 | return 0; |
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178 | #endif |
215 | #endif |
179 | |
216 | |
180 | return EIO_ERRNO (ENOENT, -1); |
217 | return EIO_ERRNO (ENOENT, -1); |
181 | } |
218 | } |
182 | |
219 | |
183 | /* POSIX API only */ |
220 | /* POSIX API only, causing trouble for win32 apps */ |
184 | #define CreateHardLink(neu,old,flags) 0 |
221 | #define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */ |
185 | #define CreateSymbolicLink(neu,old,flags) 0 |
222 | #define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */ |
186 | |
223 | |
187 | struct statvfs |
224 | struct statvfs |
188 | { |
225 | { |
189 | int dummy; |
226 | int dummy; |
190 | }; |
227 | }; |
… | |
… | |
194 | #define D_NAME(entp) entp.cFileName |
231 | #define D_NAME(entp) entp.cFileName |
195 | #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) |
196 | |
233 | |
197 | #else |
234 | #else |
198 | |
235 | |
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236 | #include <sys/ioctl.h> |
199 | #include <sys/time.h> |
237 | #include <sys/time.h> |
200 | #include <sys/select.h> |
238 | #include <sys/select.h> |
201 | #include <sys/statvfs.h> |
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202 | #include <unistd.h> |
239 | #include <unistd.h> |
203 | #include <signal.h> |
240 | #include <signal.h> |
204 | #include <dirent.h> |
241 | #include <dirent.h> |
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242 | |
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243 | #ifdef ANDROID |
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244 | #include <sys/vfs.h> |
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245 | #define statvfs statfs |
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246 | #define fstatvfs fstatfs |
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247 | #include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */ |
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248 | #else |
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249 | #include <sys/statvfs.h> |
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250 | #endif |
205 | |
251 | |
206 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
252 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
207 | #include <sys/mman.h> |
253 | #include <sys/mman.h> |
208 | #endif |
254 | #endif |
209 | |
255 | |
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237 | # include <utime.h> |
283 | # include <utime.h> |
238 | #endif |
284 | #endif |
239 | |
285 | |
240 | #if HAVE_SYS_SYSCALL_H |
286 | #if HAVE_SYS_SYSCALL_H |
241 | # include <sys/syscall.h> |
287 | # include <sys/syscall.h> |
242 | #endif |
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243 | |
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244 | #if HAVE_SYS_PRCTL_H |
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245 | # include <sys/prctl.h> |
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246 | #endif |
288 | #endif |
247 | |
289 | |
248 | #if HAVE_SENDFILE |
290 | #if HAVE_SENDFILE |
249 | # if __linux |
291 | # if __linux |
250 | # include <sys/sendfile.h> |
292 | # include <sys/sendfile.h> |
… | |
… | |
258 | # else |
300 | # else |
259 | # error sendfile support requested but not available |
301 | # error sendfile support requested but not available |
260 | # endif |
302 | # endif |
261 | #endif |
303 | #endif |
262 | |
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 | |
263 | #ifndef D_TYPE |
310 | #ifndef D_TYPE |
264 | # define D_TYPE(de) 0 |
311 | # define D_TYPE(de) 0 |
265 | #endif |
312 | #endif |
266 | #ifndef D_INO |
313 | #ifndef D_INO |
267 | # define D_INO(de) 0 |
314 | # define D_INO(de) 0 |
… | |
… | |
275 | # define NAME_MAX 4096 |
322 | # define NAME_MAX 4096 |
276 | #endif |
323 | #endif |
277 | |
324 | |
278 | /* used for readlink etc. */ |
325 | /* used for readlink etc. */ |
279 | #ifndef PATH_MAX |
326 | #ifndef PATH_MAX |
280 | # define PATH_MAX 4096 |
327 | # define PATH_MAX 0 |
281 | #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 EIO_PATH_MIN |
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335 | # define EIO_PATH_MIN 8160 |
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336 | #endif |
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337 | |
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338 | #define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX) |
282 | |
339 | |
283 | /* buffer size for various temporary buffers */ |
340 | /* buffer size for various temporary buffers */ |
284 | #define EIO_BUFSIZE 65536 |
341 | #define EIO_BUFSIZE 65536 |
285 | |
342 | |
286 | #define dBUF \ |
343 | #define dBUF \ |
287 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
344 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
288 | errno = ENOMEM; \ |
345 | errno = ENOMEM; \ |
289 | if (!eio_buf) \ |
346 | if (!eio_buf) \ |
290 | return -1 |
347 | return -1 |
291 | |
348 | |
292 | #define FUBd \ |
349 | #define FUBd \ |
293 | free (eio_buf) |
350 | free (eio_buf) |
294 | |
351 | |
295 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
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296 | |
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297 | /*****************************************************************************/ |
352 | /*****************************************************************************/ |
298 | |
353 | |
299 | struct tmpbuf |
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300 | { |
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301 | void *ptr; |
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302 | int len; |
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303 | }; |
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304 | |
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305 | static void * |
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306 | tmpbuf_get (struct tmpbuf *buf, int len) |
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307 | { |
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308 | if (buf->len < len) |
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309 | { |
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310 | free (buf->ptr); |
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311 | buf->ptr = malloc (buf->len = len); |
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312 | } |
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313 | |
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314 | return buf->ptr; |
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315 | } |
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316 | |
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317 | struct tmpbuf; |
354 | struct etp_tmpbuf; |
318 | |
355 | |
319 | #if _POSIX_VERSION >= 200809L |
356 | #if _POSIX_VERSION >= 200809L |
320 | #define HAVE_AT 1 |
357 | #define HAVE_AT 1 |
321 | #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD) |
358 | #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD) |
322 | #ifndef O_SEARCH |
359 | #ifndef O_SEARCH |
323 | #define O_SEARCH O_RDONLY |
360 | #define O_SEARCH O_RDONLY |
324 | #endif |
361 | #endif |
325 | #else |
362 | #else |
326 | #define HAVE_AT 0 |
363 | #define HAVE_AT 0 |
327 | static const char *wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path); |
364 | static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path); |
328 | #endif |
365 | #endif |
329 | |
366 | |
330 | struct eio_pwd |
367 | struct eio_pwd |
331 | { |
368 | { |
332 | #if HAVE_AT |
369 | #if HAVE_AT |
… | |
… | |
339 | /*****************************************************************************/ |
376 | /*****************************************************************************/ |
340 | |
377 | |
341 | #define ETP_PRI_MIN EIO_PRI_MIN |
378 | #define ETP_PRI_MIN EIO_PRI_MIN |
342 | #define ETP_PRI_MAX EIO_PRI_MAX |
379 | #define ETP_PRI_MAX EIO_PRI_MAX |
343 | |
380 | |
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381 | #define ETP_TYPE_QUIT -1 |
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382 | #define ETP_TYPE_GROUP EIO_GROUP |
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383 | |
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384 | static void eio_nop_callback (void) { } |
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385 | static void (*eio_want_poll_cb)(void) = eio_nop_callback; |
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386 | static void (*eio_done_poll_cb)(void) = eio_nop_callback; |
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387 | |
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388 | #define ETP_WANT_POLL(pool) eio_want_poll_cb () |
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389 | #define ETP_DONE_POLL(pool) eio_done_poll_cb () |
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390 | |
344 | struct etp_worker; |
391 | struct etp_worker; |
345 | |
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346 | #define ETP_REQ eio_req |
392 | #define ETP_REQ eio_req |
347 | #define ETP_DESTROY(req) eio_destroy (req) |
393 | #define ETP_DESTROY(req) eio_destroy (req) |
348 | static int eio_finish (eio_req *req); |
394 | static int eio_finish (eio_req *req); |
349 | #define ETP_FINISH(req) eio_finish (req) |
395 | #define ETP_FINISH(req) eio_finish (req) |
350 | static void eio_execute (struct etp_worker *self, eio_req *req); |
396 | static void eio_execute (struct etp_worker *self, eio_req *req); |
351 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
397 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk, req) |
352 | |
398 | |
353 | /*****************************************************************************/ |
399 | #include "etp.c" |
354 | |
400 | |
355 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
401 | static struct etp_pool eio_pool; |
356 | |
402 | #define EIO_POOL (&eio_pool) |
357 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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358 | ecb_inline int |
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359 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
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360 | { |
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361 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
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362 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
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363 | } |
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364 | |
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365 | static unsigned int started, idle, wanted = 4; |
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366 | |
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367 | static void (*want_poll_cb) (void); |
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368 | static void (*done_poll_cb) (void); |
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369 | |
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370 | static unsigned int max_poll_time; /* reslock */ |
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371 | static unsigned int max_poll_reqs; /* reslock */ |
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372 | |
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373 | static unsigned int nreqs; /* reqlock */ |
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374 | static unsigned int nready; /* reqlock */ |
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375 | static unsigned int npending; /* reqlock */ |
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376 | static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
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377 | static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
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378 | |
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379 | static xmutex_t wrklock; |
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380 | static xmutex_t reslock; |
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381 | static xmutex_t reqlock; |
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382 | static xcond_t reqwait; |
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383 | |
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384 | #if !HAVE_PREADWRITE |
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385 | /* |
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386 | * make our pread/pwrite emulation safe against themselves, but not against |
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387 | * normal read/write by using a mutex. slows down execution a lot, |
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388 | * but that's your problem, not mine. |
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389 | */ |
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390 | static xmutex_t preadwritelock; |
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391 | #endif |
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392 | |
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393 | typedef struct etp_worker |
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394 | { |
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395 | struct tmpbuf tmpbuf; |
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396 | |
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397 | /* locked by wrklock */ |
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398 | struct etp_worker *prev, *next; |
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399 | |
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400 | xthread_t tid; |
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401 | |
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402 | #ifdef ETP_WORKER_COMMON |
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403 | ETP_WORKER_COMMON |
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404 | #endif |
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405 | } etp_worker; |
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406 | |
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407 | static etp_worker wrk_first; /* NOT etp */ |
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408 | |
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409 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
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410 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
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411 | |
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412 | /* worker threads management */ |
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413 | |
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414 | static void |
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415 | etp_worker_clear (etp_worker *wrk) |
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416 | { |
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417 | } |
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418 | |
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419 | static void ecb_cold |
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420 | etp_worker_free (etp_worker *wrk) |
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421 | { |
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422 | free (wrk->tmpbuf.ptr); |
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423 | |
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424 | wrk->next->prev = wrk->prev; |
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425 | wrk->prev->next = wrk->next; |
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426 | |
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427 | free (wrk); |
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428 | } |
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429 | |
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430 | static unsigned int |
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431 | etp_nreqs (void) |
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432 | { |
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433 | int retval; |
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434 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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435 | retval = nreqs; |
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436 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
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437 | return retval; |
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438 | } |
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439 | |
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440 | static unsigned int |
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441 | etp_nready (void) |
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442 | { |
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443 | unsigned int retval; |
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444 | |
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445 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
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446 | retval = nready; |
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447 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
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448 | |
|
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449 | return retval; |
|
|
450 | } |
|
|
451 | |
|
|
452 | static unsigned int |
|
|
453 | etp_npending (void) |
|
|
454 | { |
|
|
455 | unsigned int retval; |
|
|
456 | |
|
|
457 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
458 | retval = npending; |
|
|
459 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
460 | |
|
|
461 | return retval; |
|
|
462 | } |
|
|
463 | |
|
|
464 | static unsigned int |
|
|
465 | etp_nthreads (void) |
|
|
466 | { |
|
|
467 | unsigned int retval; |
|
|
468 | |
|
|
469 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
470 | retval = started; |
|
|
471 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
472 | |
|
|
473 | return retval; |
|
|
474 | } |
|
|
475 | |
|
|
476 | /* |
|
|
477 | * a somewhat faster data structure might be nice, but |
|
|
478 | * with 8 priorities this actually needs <20 insns |
|
|
479 | * per shift, the most expensive operation. |
|
|
480 | */ |
|
|
481 | typedef struct { |
|
|
482 | ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ |
|
|
483 | int size; |
|
|
484 | } etp_reqq; |
|
|
485 | |
|
|
486 | static etp_reqq req_queue; |
|
|
487 | static etp_reqq res_queue; |
|
|
488 | |
|
|
489 | static void ecb_noinline ecb_cold |
|
|
490 | reqq_init (etp_reqq *q) |
|
|
491 | { |
|
|
492 | int pri; |
|
|
493 | |
|
|
494 | for (pri = 0; pri < ETP_NUM_PRI; ++pri) |
|
|
495 | q->qs[pri] = q->qe[pri] = 0; |
|
|
496 | |
|
|
497 | q->size = 0; |
|
|
498 | } |
|
|
499 | |
|
|
500 | static int ecb_noinline |
|
|
501 | reqq_push (etp_reqq *q, ETP_REQ *req) |
|
|
502 | { |
|
|
503 | int pri = req->pri; |
|
|
504 | req->next = 0; |
|
|
505 | |
|
|
506 | if (q->qe[pri]) |
|
|
507 | { |
|
|
508 | q->qe[pri]->next = req; |
|
|
509 | q->qe[pri] = req; |
|
|
510 | } |
|
|
511 | else |
|
|
512 | q->qe[pri] = q->qs[pri] = req; |
|
|
513 | |
|
|
514 | return q->size++; |
|
|
515 | } |
|
|
516 | |
|
|
517 | static ETP_REQ * ecb_noinline |
|
|
518 | reqq_shift (etp_reqq *q) |
|
|
519 | { |
|
|
520 | int pri; |
|
|
521 | |
|
|
522 | if (!q->size) |
|
|
523 | return 0; |
|
|
524 | |
|
|
525 | --q->size; |
|
|
526 | |
|
|
527 | for (pri = ETP_NUM_PRI; pri--; ) |
|
|
528 | { |
|
|
529 | eio_req *req = q->qs[pri]; |
|
|
530 | |
|
|
531 | if (req) |
|
|
532 | { |
|
|
533 | if (!(q->qs[pri] = (eio_req *)req->next)) |
|
|
534 | q->qe[pri] = 0; |
|
|
535 | |
|
|
536 | return req; |
|
|
537 | } |
|
|
538 | } |
|
|
539 | |
|
|
540 | abort (); |
|
|
541 | } |
|
|
542 | |
|
|
543 | static int ecb_cold |
|
|
544 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
|
|
545 | { |
|
|
546 | X_MUTEX_CREATE (wrklock); |
|
|
547 | X_MUTEX_CREATE (reslock); |
|
|
548 | X_MUTEX_CREATE (reqlock); |
|
|
549 | X_COND_CREATE (reqwait); |
|
|
550 | |
|
|
551 | reqq_init (&req_queue); |
|
|
552 | reqq_init (&res_queue); |
|
|
553 | |
|
|
554 | wrk_first.next = |
|
|
555 | wrk_first.prev = &wrk_first; |
|
|
556 | |
|
|
557 | started = 0; |
|
|
558 | idle = 0; |
|
|
559 | nreqs = 0; |
|
|
560 | nready = 0; |
|
|
561 | npending = 0; |
|
|
562 | |
|
|
563 | want_poll_cb = want_poll; |
|
|
564 | done_poll_cb = done_poll; |
|
|
565 | |
|
|
566 | return 0; |
|
|
567 | } |
|
|
568 | |
|
|
569 | X_THREAD_PROC (etp_proc); |
|
|
570 | |
|
|
571 | static void ecb_cold |
|
|
572 | etp_start_thread (void) |
|
|
573 | { |
|
|
574 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
|
|
575 | |
|
|
576 | /*TODO*/ |
|
|
577 | assert (("unable to allocate worker thread data", wrk)); |
|
|
578 | |
|
|
579 | X_LOCK (wrklock); |
|
|
580 | |
|
|
581 | if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
|
|
582 | { |
|
|
583 | wrk->prev = &wrk_first; |
|
|
584 | wrk->next = wrk_first.next; |
|
|
585 | wrk_first.next->prev = wrk; |
|
|
586 | wrk_first.next = wrk; |
|
|
587 | ++started; |
|
|
588 | } |
|
|
589 | else |
|
|
590 | free (wrk); |
|
|
591 | |
|
|
592 | X_UNLOCK (wrklock); |
|
|
593 | } |
|
|
594 | |
|
|
595 | static void |
|
|
596 | etp_maybe_start_thread (void) |
|
|
597 | { |
|
|
598 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
|
|
599 | return; |
|
|
600 | |
|
|
601 | /* todo: maybe use idle here, but might be less exact */ |
|
|
602 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
|
|
603 | return; |
|
|
604 | |
|
|
605 | etp_start_thread (); |
|
|
606 | } |
|
|
607 | |
|
|
608 | static void ecb_cold |
|
|
609 | etp_end_thread (void) |
|
|
610 | { |
|
|
611 | eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */ |
|
|
612 | |
|
|
613 | req->type = -1; |
|
|
614 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
615 | |
|
|
616 | X_LOCK (reqlock); |
|
|
617 | reqq_push (&req_queue, req); |
|
|
618 | X_COND_SIGNAL (reqwait); |
|
|
619 | X_UNLOCK (reqlock); |
|
|
620 | |
|
|
621 | X_LOCK (wrklock); |
|
|
622 | --started; |
|
|
623 | X_UNLOCK (wrklock); |
|
|
624 | } |
|
|
625 | |
|
|
626 | static int |
|
|
627 | etp_poll (void) |
|
|
628 | { |
|
|
629 | unsigned int maxreqs; |
|
|
630 | unsigned int maxtime; |
|
|
631 | struct timeval tv_start, tv_now; |
|
|
632 | |
|
|
633 | X_LOCK (reslock); |
|
|
634 | maxreqs = max_poll_reqs; |
|
|
635 | maxtime = max_poll_time; |
|
|
636 | X_UNLOCK (reslock); |
|
|
637 | |
|
|
638 | if (maxtime) |
|
|
639 | gettimeofday (&tv_start, 0); |
|
|
640 | |
|
|
641 | for (;;) |
|
|
642 | { |
|
|
643 | ETP_REQ *req; |
|
|
644 | |
|
|
645 | etp_maybe_start_thread (); |
|
|
646 | |
|
|
647 | X_LOCK (reslock); |
|
|
648 | req = reqq_shift (&res_queue); |
|
|
649 | |
|
|
650 | if (req) |
|
|
651 | { |
|
|
652 | --npending; |
|
|
653 | |
|
|
654 | if (!res_queue.size && done_poll_cb) |
|
|
655 | done_poll_cb (); |
|
|
656 | } |
|
|
657 | |
|
|
658 | X_UNLOCK (reslock); |
|
|
659 | |
|
|
660 | if (!req) |
|
|
661 | return 0; |
|
|
662 | |
|
|
663 | X_LOCK (reqlock); |
|
|
664 | --nreqs; |
|
|
665 | X_UNLOCK (reqlock); |
|
|
666 | |
|
|
667 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
|
|
668 | { |
|
|
669 | req->int1 = 1; /* mark request as delayed */ |
|
|
670 | continue; |
|
|
671 | } |
|
|
672 | else |
|
|
673 | { |
|
|
674 | int res = ETP_FINISH (req); |
|
|
675 | if (ecb_expect_false (res)) |
|
|
676 | return res; |
|
|
677 | } |
|
|
678 | |
|
|
679 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
|
|
680 | break; |
|
|
681 | |
|
|
682 | if (maxtime) |
|
|
683 | { |
|
|
684 | gettimeofday (&tv_now, 0); |
|
|
685 | |
|
|
686 | if (tvdiff (&tv_start, &tv_now) >= maxtime) |
|
|
687 | break; |
|
|
688 | } |
|
|
689 | } |
|
|
690 | |
|
|
691 | errno = EAGAIN; |
|
|
692 | return -1; |
|
|
693 | } |
|
|
694 | |
|
|
695 | static void |
|
|
696 | etp_cancel (ETP_REQ *req) |
|
|
697 | { |
|
|
698 | req->cancelled = 1; |
|
|
699 | |
|
|
700 | eio_grp_cancel (req); |
|
|
701 | } |
|
|
702 | |
|
|
703 | static void |
|
|
704 | etp_submit (ETP_REQ *req) |
|
|
705 | { |
|
|
706 | req->pri -= ETP_PRI_MIN; |
|
|
707 | |
|
|
708 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
|
|
709 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
|
|
710 | |
|
|
711 | if (ecb_expect_false (req->type == EIO_GROUP)) |
|
|
712 | { |
|
|
713 | /* I hope this is worth it :/ */ |
|
|
714 | X_LOCK (reqlock); |
|
|
715 | ++nreqs; |
|
|
716 | X_UNLOCK (reqlock); |
|
|
717 | |
|
|
718 | X_LOCK (reslock); |
|
|
719 | |
|
|
720 | ++npending; |
|
|
721 | |
|
|
722 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
723 | want_poll_cb (); |
|
|
724 | |
|
|
725 | X_UNLOCK (reslock); |
|
|
726 | } |
|
|
727 | else |
|
|
728 | { |
|
|
729 | X_LOCK (reqlock); |
|
|
730 | ++nreqs; |
|
|
731 | ++nready; |
|
|
732 | reqq_push (&req_queue, req); |
|
|
733 | X_COND_SIGNAL (reqwait); |
|
|
734 | X_UNLOCK (reqlock); |
|
|
735 | |
|
|
736 | etp_maybe_start_thread (); |
|
|
737 | } |
|
|
738 | } |
|
|
739 | |
|
|
740 | static void ecb_cold |
|
|
741 | etp_set_max_poll_time (double nseconds) |
|
|
742 | { |
|
|
743 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
744 | max_poll_time = nseconds * EIO_TICKS; |
|
|
745 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
746 | } |
|
|
747 | |
|
|
748 | static void ecb_cold |
|
|
749 | etp_set_max_poll_reqs (unsigned int maxreqs) |
|
|
750 | { |
|
|
751 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
|
|
752 | max_poll_reqs = maxreqs; |
|
|
753 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
|
|
754 | } |
|
|
755 | |
|
|
756 | static void ecb_cold |
|
|
757 | etp_set_max_idle (unsigned int nthreads) |
|
|
758 | { |
|
|
759 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
760 | max_idle = nthreads; |
|
|
761 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
762 | } |
|
|
763 | |
|
|
764 | static void ecb_cold |
|
|
765 | etp_set_idle_timeout (unsigned int seconds) |
|
|
766 | { |
|
|
767 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
768 | idle_timeout = seconds; |
|
|
769 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
770 | } |
|
|
771 | |
|
|
772 | static void ecb_cold |
|
|
773 | etp_set_min_parallel (unsigned int nthreads) |
|
|
774 | { |
|
|
775 | if (wanted < nthreads) |
|
|
776 | wanted = nthreads; |
|
|
777 | } |
|
|
778 | |
|
|
779 | static void ecb_cold |
|
|
780 | etp_set_max_parallel (unsigned int nthreads) |
|
|
781 | { |
|
|
782 | if (wanted > nthreads) |
|
|
783 | wanted = nthreads; |
|
|
784 | |
|
|
785 | while (started > wanted) |
|
|
786 | etp_end_thread (); |
|
|
787 | } |
|
|
788 | |
403 | |
789 | /*****************************************************************************/ |
404 | /*****************************************************************************/ |
790 | |
405 | |
791 | static void |
406 | static void |
792 | grp_try_feed (eio_req *grp) |
407 | grp_try_feed (eio_req *grp) |
793 | { |
408 | { |
794 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
409 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
795 | { |
410 | { |
796 | grp->flags &= ~EIO_FLAG_GROUPADD; |
411 | grp->flags &= ~ETP_FLAG_GROUPADD; |
797 | |
412 | |
798 | EIO_FEED (grp); |
413 | EIO_FEED (grp); |
799 | |
414 | |
800 | /* stop if no progress has been made */ |
415 | /* stop if no progress has been made */ |
801 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
416 | if (!(grp->flags & ETP_FLAG_GROUPADD)) |
802 | { |
417 | { |
803 | grp->feed = 0; |
418 | grp->feed = 0; |
804 | break; |
419 | break; |
805 | } |
420 | } |
806 | } |
421 | } |
… | |
… | |
813 | |
428 | |
814 | /* call feeder, if applicable */ |
429 | /* call feeder, if applicable */ |
815 | grp_try_feed (grp); |
430 | grp_try_feed (grp); |
816 | |
431 | |
817 | /* finish, if done */ |
432 | /* finish, if done */ |
818 | if (!grp->size && grp->int1) |
433 | if (!grp->size && grp->flags & ETP_FLAG_DELAYED) |
819 | return eio_finish (grp); |
434 | return eio_finish (grp); |
820 | else |
435 | else |
821 | return 0; |
436 | return 0; |
822 | } |
437 | } |
823 | |
438 | |
… | |
… | |
859 | } |
474 | } |
860 | |
475 | |
861 | void |
476 | void |
862 | eio_grp_cancel (eio_req *grp) |
477 | eio_grp_cancel (eio_req *grp) |
863 | { |
478 | { |
864 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
479 | etp_grp_cancel (EIO_POOL, grp); |
865 | eio_cancel (grp); |
|
|
866 | } |
480 | } |
867 | |
481 | |
868 | void |
482 | void |
869 | eio_cancel (eio_req *req) |
483 | eio_cancel (eio_req *req) |
870 | { |
484 | { |
871 | etp_cancel (req); |
485 | etp_cancel (EIO_POOL, req); |
872 | } |
486 | } |
873 | |
487 | |
874 | void |
488 | void |
875 | eio_submit (eio_req *req) |
489 | eio_submit (eio_req *req) |
876 | { |
490 | { |
877 | etp_submit (req); |
491 | etp_submit (EIO_POOL, req); |
878 | } |
492 | } |
879 | |
493 | |
880 | unsigned int |
494 | unsigned int |
881 | eio_nreqs (void) |
495 | eio_nreqs (void) |
882 | { |
496 | { |
883 | return etp_nreqs (); |
497 | return etp_nreqs (EIO_POOL); |
884 | } |
498 | } |
885 | |
499 | |
886 | unsigned int |
500 | unsigned int |
887 | eio_nready (void) |
501 | eio_nready (void) |
888 | { |
502 | { |
889 | return etp_nready (); |
503 | return etp_nready (EIO_POOL); |
890 | } |
504 | } |
891 | |
505 | |
892 | unsigned int |
506 | unsigned int |
893 | eio_npending (void) |
507 | eio_npending (void) |
894 | { |
508 | { |
895 | return etp_npending (); |
509 | return etp_npending (EIO_POOL); |
896 | } |
510 | } |
897 | |
511 | |
898 | unsigned int ecb_cold |
512 | unsigned int ecb_cold |
899 | eio_nthreads (void) |
513 | eio_nthreads (void) |
900 | { |
514 | { |
901 | return etp_nthreads (); |
515 | return etp_nthreads (EIO_POOL); |
902 | } |
516 | } |
903 | |
517 | |
904 | void ecb_cold |
518 | void ecb_cold |
905 | eio_set_max_poll_time (double nseconds) |
519 | eio_set_max_poll_time (double nseconds) |
906 | { |
520 | { |
907 | etp_set_max_poll_time (nseconds); |
521 | etp_set_max_poll_time (EIO_POOL, nseconds); |
908 | } |
522 | } |
909 | |
523 | |
910 | void ecb_cold |
524 | void ecb_cold |
911 | eio_set_max_poll_reqs (unsigned int maxreqs) |
525 | eio_set_max_poll_reqs (unsigned int maxreqs) |
912 | { |
526 | { |
913 | etp_set_max_poll_reqs (maxreqs); |
527 | etp_set_max_poll_reqs (EIO_POOL, maxreqs); |
914 | } |
528 | } |
915 | |
529 | |
916 | void ecb_cold |
530 | void ecb_cold |
917 | eio_set_max_idle (unsigned int nthreads) |
531 | eio_set_max_idle (unsigned int nthreads) |
918 | { |
532 | { |
919 | etp_set_max_idle (nthreads); |
533 | etp_set_max_idle (EIO_POOL, nthreads); |
920 | } |
534 | } |
921 | |
535 | |
922 | void ecb_cold |
536 | void ecb_cold |
923 | eio_set_idle_timeout (unsigned int seconds) |
537 | eio_set_idle_timeout (unsigned int seconds) |
924 | { |
538 | { |
925 | etp_set_idle_timeout (seconds); |
539 | etp_set_idle_timeout (EIO_POOL, seconds); |
926 | } |
540 | } |
927 | |
541 | |
928 | void ecb_cold |
542 | void ecb_cold |
929 | eio_set_min_parallel (unsigned int nthreads) |
543 | eio_set_min_parallel (unsigned int nthreads) |
930 | { |
544 | { |
931 | etp_set_min_parallel (nthreads); |
545 | etp_set_min_parallel (EIO_POOL, nthreads); |
932 | } |
546 | } |
933 | |
547 | |
934 | void ecb_cold |
548 | void ecb_cold |
935 | eio_set_max_parallel (unsigned int nthreads) |
549 | eio_set_max_parallel (unsigned int nthreads) |
936 | { |
550 | { |
937 | etp_set_max_parallel (nthreads); |
551 | etp_set_max_parallel (EIO_POOL, nthreads); |
938 | } |
552 | } |
939 | |
553 | |
940 | int eio_poll (void) |
554 | int eio_poll (void) |
941 | { |
555 | { |
942 | return etp_poll (); |
556 | return etp_poll (EIO_POOL); |
943 | } |
557 | } |
944 | |
558 | |
945 | /*****************************************************************************/ |
559 | /*****************************************************************************/ |
946 | /* work around various missing functions */ |
560 | /* work around various missing functions */ |
947 | |
561 | |
948 | #if !HAVE_PREADWRITE |
562 | #if HAVE_POSIX_CLOSE && !__linux |
949 | # undef pread |
563 | # define eio__close(fd) posix_close (fd, 0) |
950 | # undef pwrite |
564 | #else |
951 | # define pread eio__pread |
565 | # define eio__close(fd) close (fd) |
952 | # define pwrite eio__pwrite |
|
|
953 | |
|
|
954 | static eio_ssize_t |
|
|
955 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
|
|
956 | { |
|
|
957 | eio_ssize_t res; |
|
|
958 | off_t ooffset; |
|
|
959 | |
|
|
960 | X_LOCK (preadwritelock); |
|
|
961 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
962 | lseek (fd, offset, SEEK_SET); |
|
|
963 | res = read (fd, buf, count); |
|
|
964 | lseek (fd, ooffset, SEEK_SET); |
|
|
965 | X_UNLOCK (preadwritelock); |
|
|
966 | |
|
|
967 | return res; |
|
|
968 | } |
|
|
969 | |
|
|
970 | static eio_ssize_t |
|
|
971 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
972 | { |
|
|
973 | eio_ssize_t res; |
|
|
974 | off_t ooffset; |
|
|
975 | |
|
|
976 | X_LOCK (preadwritelock); |
|
|
977 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
978 | lseek (fd, offset, SEEK_SET); |
|
|
979 | res = write (fd, buf, count); |
|
|
980 | lseek (fd, ooffset, SEEK_SET); |
|
|
981 | X_UNLOCK (preadwritelock); |
|
|
982 | |
|
|
983 | return res; |
|
|
984 | } |
|
|
985 | #endif |
566 | #endif |
|
|
567 | |
|
|
568 | /* close() without disturbing errno */ |
|
|
569 | static void |
|
|
570 | silent_close (int fd) |
|
|
571 | { |
|
|
572 | int saved_errno = errno; |
|
|
573 | eio__close (fd); |
|
|
574 | errno = saved_errno; |
|
|
575 | } |
986 | |
576 | |
987 | #ifndef HAVE_UTIMES |
577 | #ifndef HAVE_UTIMES |
988 | |
578 | |
989 | # undef utimes |
579 | # undef utimes |
990 | # define utimes(path,times) eio__utimes (path, times) |
580 | # define utimes(path,times) eio__utimes (path, times) |
… | |
… | |
1369 | intptr_t end = addr + len; |
959 | intptr_t end = addr + len; |
1370 | intptr_t page = eio_pagesize (); |
960 | intptr_t page = eio_pagesize (); |
1371 | |
961 | |
1372 | if (addr < end) |
962 | if (addr < end) |
1373 | if (flags & EIO_MT_MODIFY) /* modify */ |
963 | if (flags & EIO_MT_MODIFY) /* modify */ |
1374 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
964 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
1375 | else |
965 | else |
1376 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
966 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
1377 | } |
967 | } |
1378 | |
968 | |
1379 | return 0; |
969 | return 0; |
1380 | } |
970 | } |
1381 | |
971 | |
… | |
… | |
1396 | req->result = req->offs == (off_t)-1 ? -1 : 0; |
986 | req->result = req->offs == (off_t)-1 ? -1 : 0; |
1397 | } |
987 | } |
1398 | |
988 | |
1399 | /* result will always end up in tmpbuf, there is always space for adding a 0-byte */ |
989 | /* result will always end up in tmpbuf, there is always space for adding a 0-byte */ |
1400 | static int |
990 | static int |
1401 | eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path) |
991 | eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
1402 | { |
992 | { |
|
|
993 | char *res; |
1403 | const char *rel = path; |
994 | const char *rel = path; |
1404 | char *res; |
|
|
1405 | char *tmp1, *tmp2; |
995 | char *tmp1, *tmp2; |
1406 | #if SYMLOOP_MAX > 32 |
996 | #if SYMLOOP_MAX > 32 |
1407 | int symlinks = SYMLOOP_MAX; |
997 | int symlinks = SYMLOOP_MAX; |
1408 | #else |
998 | #else |
1409 | int symlinks = 32; |
999 | int symlinks = 32; |
… | |
… | |
1415 | |
1005 | |
1416 | errno = ENOENT; |
1006 | errno = ENOENT; |
1417 | if (!*rel) |
1007 | if (!*rel) |
1418 | return -1; |
1008 | return -1; |
1419 | |
1009 | |
1420 | res = tmpbuf_get (tmpbuf, PATH_MAX * 3); |
1010 | res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3); |
|
|
1011 | #ifdef _WIN32 |
|
|
1012 | if (_access (rel, 4) != 0) |
|
|
1013 | return -1; |
|
|
1014 | |
|
|
1015 | symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0); |
|
|
1016 | |
|
|
1017 | errno = ENAMETOOLONG; |
|
|
1018 | if (symlinks >= EIO_PATH_MAX * 3) |
|
|
1019 | return -1; |
|
|
1020 | |
|
|
1021 | errno = EIO; |
|
|
1022 | if (symlinks <= 0) |
|
|
1023 | return -1; |
|
|
1024 | |
|
|
1025 | return symlinks; |
|
|
1026 | |
|
|
1027 | #else |
1421 | tmp1 = res + PATH_MAX; |
1028 | tmp1 = res + EIO_PATH_MAX; |
1422 | tmp2 = tmp1 + PATH_MAX; |
1029 | tmp2 = tmp1 + EIO_PATH_MAX; |
1423 | |
1030 | |
1424 | #if 0 /* disabled, the musl way to do things is just too racy */ |
1031 | #if 0 /* disabled, the musl way to do things is just too racy */ |
1425 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
1032 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
1426 | /* on linux we may be able to ask the kernel */ |
1033 | /* on linux we may be able to ask the kernel */ |
1427 | { |
1034 | { |
1428 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
1035 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
1429 | |
1036 | |
1430 | if (fd >= 0) |
1037 | if (fd >= 0) |
1431 | { |
1038 | { |
1432 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1039 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1433 | req->result = readlink (tmp1, res, PATH_MAX); |
1040 | req->result = readlink (tmp1, res, EIO_PATH_MAX); |
1434 | close (fd); |
|
|
1435 | |
|
|
1436 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1041 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1042 | eio__close (fd); |
1437 | |
1043 | |
1438 | if (req->result > 0) |
1044 | if (req->result > 0) |
1439 | goto done; |
1045 | goto done; |
1440 | } |
1046 | } |
1441 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1047 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1442 | return; |
1048 | return -1; |
1443 | } |
1049 | } |
1444 | #endif |
1050 | #endif |
1445 | #endif |
1051 | #endif |
1446 | |
1052 | |
1447 | if (*rel != '/') |
1053 | if (*rel != '/') |
… | |
… | |
1452 | if (wd == EIO_INVALID_WD) |
1058 | if (wd == EIO_INVALID_WD) |
1453 | return -1; |
1059 | return -1; |
1454 | |
1060 | |
1455 | if (wd == EIO_CWD) |
1061 | if (wd == EIO_CWD) |
1456 | { |
1062 | { |
1457 | if (!getcwd (res, PATH_MAX)) |
1063 | if (!getcwd (res, EIO_PATH_MAX)) |
1458 | return -1; |
1064 | return -1; |
1459 | |
1065 | |
1460 | len = strlen (res); |
1066 | len = strlen (res); |
1461 | } |
1067 | } |
1462 | else |
1068 | else |
… | |
… | |
1509 | |
1115 | |
1510 | /* zero-terminate, for readlink */ |
1116 | /* zero-terminate, for readlink */ |
1511 | res [len + 1] = 0; |
1117 | res [len + 1] = 0; |
1512 | |
1118 | |
1513 | /* now check if it's a symlink */ |
1119 | /* now check if it's a symlink */ |
1514 | linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX); |
1120 | linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX); |
1515 | |
1121 | |
1516 | if (linklen < 0) |
1122 | if (linklen < 0) |
1517 | { |
1123 | { |
1518 | if (errno != EINVAL) |
1124 | if (errno != EINVAL) |
1519 | return -1; |
1125 | return -1; |
… | |
… | |
1525 | { |
1131 | { |
1526 | /* yay, it was a symlink - build new path in tmp2 */ |
1132 | /* yay, it was a symlink - build new path in tmp2 */ |
1527 | int rellen = strlen (rel); |
1133 | int rellen = strlen (rel); |
1528 | |
1134 | |
1529 | errno = ENAMETOOLONG; |
1135 | errno = ENAMETOOLONG; |
1530 | if (linklen + 1 + rellen >= PATH_MAX) |
1136 | if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */ |
1531 | return -1; |
1137 | return -1; |
1532 | |
1138 | |
1533 | errno = ELOOP; |
1139 | errno = ELOOP; |
1534 | if (!--symlinks) |
1140 | if (!--symlinks) |
1535 | return -1; |
1141 | return -1; |
… | |
… | |
1549 | /* special case for the lone root path */ |
1155 | /* special case for the lone root path */ |
1550 | if (res == tmpbuf->ptr) |
1156 | if (res == tmpbuf->ptr) |
1551 | *res++ = '/'; |
1157 | *res++ = '/'; |
1552 | |
1158 | |
1553 | return res - (char *)tmpbuf->ptr; |
1159 | return res - (char *)tmpbuf->ptr; |
|
|
1160 | #endif |
1554 | } |
1161 | } |
1555 | |
1162 | |
1556 | static signed char |
1163 | static signed char |
1557 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1164 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1558 | { |
1165 | { |
… | |
… | |
1798 | return; |
1405 | return; |
1799 | |
1406 | |
1800 | dirp = fdopendir (fd); |
1407 | dirp = fdopendir (fd); |
1801 | |
1408 | |
1802 | if (!dirp) |
1409 | if (!dirp) |
1803 | close (fd); |
1410 | silent_close (fd); |
1804 | } |
1411 | } |
1805 | else |
1412 | else |
1806 | dirp = opendir (req->ptr1); |
1413 | dirp = opendir (req->ptr1); |
1807 | #else |
1414 | #else |
1808 | dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1)); |
1415 | dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1)); |
… | |
… | |
1931 | #ifdef DT_FIFO |
1538 | #ifdef DT_FIFO |
1932 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
1539 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
1933 | #endif |
1540 | #endif |
1934 | #ifdef DT_CHR |
1541 | #ifdef DT_CHR |
1935 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
1542 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
1936 | #endif |
1543 | #endif |
1937 | #ifdef DT_MPC |
1544 | #ifdef DT_MPC |
1938 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
1545 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
1939 | #endif |
1546 | #endif |
1940 | #ifdef DT_DIR |
1547 | #ifdef DT_DIR |
1941 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
1548 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
1942 | #endif |
1549 | #endif |
1943 | #ifdef DT_NAM |
1550 | #ifdef DT_NAM |
1944 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
1551 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
1945 | #endif |
1552 | #endif |
1946 | #ifdef DT_BLK |
1553 | #ifdef DT_BLK |
1947 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
1554 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
1948 | #endif |
1555 | #endif |
1949 | #ifdef DT_MPB |
1556 | #ifdef DT_MPB |
1950 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
1557 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
1951 | #endif |
1558 | #endif |
1952 | #ifdef DT_REG |
1559 | #ifdef DT_REG |
1953 | case DT_REG: ent->type = EIO_DT_REG; break; |
1560 | case DT_REG: ent->type = EIO_DT_REG; break; |
1954 | #endif |
1561 | #endif |
1955 | #ifdef DT_NWK |
1562 | #ifdef DT_NWK |
1956 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
1563 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
1957 | #endif |
1564 | #endif |
1958 | #ifdef DT_CMP |
1565 | #ifdef DT_CMP |
1959 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
1566 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
1960 | #endif |
1567 | #endif |
1961 | #ifdef DT_LNK |
1568 | #ifdef DT_LNK |
1962 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
1569 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
1963 | #endif |
1570 | #endif |
1964 | #ifdef DT_SOCK |
1571 | #ifdef DT_SOCK |
1965 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
1572 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
… | |
… | |
2017 | #if !HAVE_AT |
1624 | #if !HAVE_AT |
2018 | |
1625 | |
2019 | /* a bit like realpath, but usually faster because it doesn'T have to return */ |
1626 | /* a bit like realpath, but usually faster because it doesn'T have to return */ |
2020 | /* an absolute or canonical path */ |
1627 | /* an absolute or canonical path */ |
2021 | static const char * |
1628 | static const char * |
2022 | wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path) |
1629 | wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
2023 | { |
1630 | { |
2024 | if (!wd || *path == '/') |
1631 | if (!wd || *path == '/') |
2025 | return path; |
1632 | return path; |
2026 | |
1633 | |
2027 | if (path [0] == '.' && !path [1]) |
1634 | if (path [0] == '.' && !path [1]) |
… | |
… | |
2029 | |
1636 | |
2030 | { |
1637 | { |
2031 | int l1 = wd->len; |
1638 | int l1 = wd->len; |
2032 | int l2 = strlen (path); |
1639 | int l2 = strlen (path); |
2033 | |
1640 | |
2034 | char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2); |
1641 | char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2); |
2035 | |
1642 | |
2036 | memcpy (res, wd->str, l1); |
1643 | memcpy (res, wd->str, l1); |
2037 | res [l1] = '/'; |
1644 | res [l1] = '/'; |
2038 | memcpy (res + l1 + 1, path, l2 + 1); |
1645 | memcpy (res + l1 + 1, path, l2 + 1); |
2039 | |
1646 | |
… | |
… | |
2042 | } |
1649 | } |
2043 | |
1650 | |
2044 | #endif |
1651 | #endif |
2045 | |
1652 | |
2046 | static eio_wd |
1653 | static eio_wd |
2047 | eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path) |
1654 | eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
2048 | { |
1655 | { |
2049 | int fd; |
1656 | int fd; |
2050 | eio_wd res; |
1657 | eio_wd res; |
2051 | int len = eio__realpath (tmpbuf, wd, path); |
1658 | int len = eio__realpath (tmpbuf, wd, path); |
2052 | |
1659 | |
… | |
… | |
2074 | } |
1681 | } |
2075 | |
1682 | |
2076 | eio_wd |
1683 | eio_wd |
2077 | eio_wd_open_sync (eio_wd wd, const char *path) |
1684 | eio_wd_open_sync (eio_wd wd, const char *path) |
2078 | { |
1685 | { |
2079 | struct tmpbuf tmpbuf = { 0 }; |
1686 | struct etp_tmpbuf tmpbuf = { }; |
2080 | wd = eio__wd_open_sync (&tmpbuf, wd, path); |
1687 | wd = eio__wd_open_sync (&tmpbuf, wd, path); |
2081 | free (tmpbuf.ptr); |
1688 | free (tmpbuf.ptr); |
2082 | |
1689 | |
2083 | return wd; |
1690 | return wd; |
2084 | } |
1691 | } |
… | |
… | |
2087 | eio_wd_close_sync (eio_wd wd) |
1694 | eio_wd_close_sync (eio_wd wd) |
2088 | { |
1695 | { |
2089 | if (wd != EIO_INVALID_WD && wd != EIO_CWD) |
1696 | if (wd != EIO_INVALID_WD && wd != EIO_CWD) |
2090 | { |
1697 | { |
2091 | #if HAVE_AT |
1698 | #if HAVE_AT |
2092 | close (wd->fd); |
1699 | eio__close (wd->fd); |
2093 | #endif |
1700 | #endif |
2094 | free (wd); |
1701 | free (wd); |
2095 | } |
1702 | } |
2096 | } |
1703 | } |
2097 | |
1704 | |
2098 | #if HAVE_AT |
1705 | #if HAVE_AT |
2099 | |
1706 | |
|
|
1707 | static int |
|
|
1708 | eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags) |
|
|
1709 | { |
|
|
1710 | #if HAVE_RENAMEAT2 |
|
|
1711 | return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags); |
|
|
1712 | #else |
|
|
1713 | if (flags) |
|
|
1714 | return EIO_ENOSYS (); |
|
|
1715 | |
|
|
1716 | return renameat (olddirfd, oldpath, newdirfd, newpath); |
|
|
1717 | #endif |
|
|
1718 | } |
|
|
1719 | |
2100 | /* they forgot these */ |
1720 | /* they forgot these */ |
2101 | |
1721 | |
2102 | static int |
1722 | static int |
2103 | eio__truncateat (int dirfd, const char *path, off_t length) |
1723 | eio__truncateat (int dirfd, const char *path, off_t length) |
2104 | { |
1724 | { |
… | |
… | |
2107 | |
1727 | |
2108 | if (fd < 0) |
1728 | if (fd < 0) |
2109 | return fd; |
1729 | return fd; |
2110 | |
1730 | |
2111 | res = ftruncate (fd, length); |
1731 | res = ftruncate (fd, length); |
2112 | close (fd); |
1732 | silent_close (fd); |
2113 | return res; |
1733 | return res; |
2114 | } |
1734 | } |
2115 | |
1735 | |
2116 | static int |
1736 | static int |
2117 | eio__statvfsat (int dirfd, const char *path, struct statvfs *buf) |
1737 | eio__statvfsat (int dirfd, const char *path, struct statvfs *buf) |
… | |
… | |
2121 | |
1741 | |
2122 | if (fd < 0) |
1742 | if (fd < 0) |
2123 | return fd; |
1743 | return fd; |
2124 | |
1744 | |
2125 | res = fstatvfs (fd, buf); |
1745 | res = fstatvfs (fd, buf); |
2126 | close (fd); |
1746 | silent_close (fd); |
2127 | return res; |
1747 | return res; |
2128 | |
|
|
2129 | } |
1748 | } |
2130 | |
1749 | |
2131 | #endif |
1750 | #endif |
2132 | |
1751 | |
2133 | /*****************************************************************************/ |
1752 | /*****************************************************************************/ |
2134 | |
1753 | |
2135 | #define ALLOC(len) \ |
1754 | #define ALLOC(len) \ |
2136 | if (!req->ptr2) \ |
1755 | if (!req->ptr2) \ |
2137 | { \ |
1756 | { \ |
2138 | X_LOCK (wrklock); \ |
1757 | X_LOCK (EIO_POOL->wrklock); \ |
2139 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
1758 | req->flags |= EIO_FLAG_PTR2_FREE; \ |
2140 | X_UNLOCK (wrklock); \ |
1759 | X_UNLOCK (EIO_POOL->wrklock); \ |
2141 | req->ptr2 = malloc (len); \ |
1760 | req->ptr2 = malloc (len); \ |
2142 | if (!req->ptr2) \ |
1761 | if (!req->ptr2) \ |
2143 | { \ |
1762 | { \ |
2144 | errno = ENOMEM; \ |
1763 | errno = ENOMEM; \ |
2145 | req->result = -1; \ |
1764 | req->result = -1; \ |
2146 | break; \ |
1765 | goto alloc_fail; \ |
2147 | } \ |
1766 | } \ |
2148 | } |
1767 | } |
2149 | |
1768 | |
2150 | static void ecb_noinline ecb_cold |
1769 | /*****************************************************************************/ |
2151 | etp_proc_init (void) |
|
|
2152 | { |
|
|
2153 | #if HAVE_PRCTL_SET_NAME |
|
|
2154 | /* provide a more sensible "thread name" */ |
|
|
2155 | char name[16 + 1]; |
|
|
2156 | const int namelen = sizeof (name) - 1; |
|
|
2157 | int len; |
|
|
2158 | |
1770 | |
2159 | prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0); |
1771 | static void |
2160 | name [namelen] = 0; |
1772 | eio__slurp (int fd, eio_req *req) |
2161 | len = strlen (name); |
|
|
2162 | strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio"); |
|
|
2163 | prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); |
|
|
2164 | #endif |
|
|
2165 | } |
|
|
2166 | |
|
|
2167 | X_THREAD_PROC (etp_proc) |
|
|
2168 | { |
1773 | { |
2169 | ETP_REQ *req; |
1774 | req->result = fd; |
2170 | struct timespec ts; |
|
|
2171 | etp_worker *self = (etp_worker *)thr_arg; |
|
|
2172 | |
1775 | |
2173 | etp_proc_init (); |
1776 | if (fd < 0) |
|
|
1777 | return; |
2174 | |
1778 | |
2175 | /* try to distribute timeouts somewhat evenly */ |
1779 | if (req->offs < 0 || !req->size) /* do we need the size? */ |
2176 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
|
|
2177 | |
|
|
2178 | for (;;) |
|
|
2179 | { |
1780 | { |
2180 | ts.tv_sec = 0; |
1781 | off_t size = lseek (fd, 0, SEEK_END); |
2181 | |
1782 | |
2182 | X_LOCK (reqlock); |
|
|
2183 | |
|
|
2184 | for (;;) |
|
|
2185 | { |
|
|
2186 | req = reqq_shift (&req_queue); |
|
|
2187 | |
|
|
2188 | if (req) |
|
|
2189 | break; |
|
|
2190 | |
|
|
2191 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
2192 | { |
|
|
2193 | X_UNLOCK (reqlock); |
|
|
2194 | X_LOCK (wrklock); |
|
|
2195 | --started; |
|
|
2196 | X_UNLOCK (wrklock); |
|
|
2197 | goto quit; |
|
|
2198 | } |
|
|
2199 | |
|
|
2200 | ++idle; |
|
|
2201 | |
|
|
2202 | if (idle <= max_idle) |
|
|
2203 | /* we are allowed to idle, so do so without any timeout */ |
|
|
2204 | X_COND_WAIT (reqwait, reqlock); |
|
|
2205 | else |
|
|
2206 | { |
|
|
2207 | /* initialise timeout once */ |
|
|
2208 | if (!ts.tv_sec) |
|
|
2209 | ts.tv_sec = time (0) + idle_timeout; |
|
|
2210 | |
|
|
2211 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
2212 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
|
|
2213 | } |
|
|
2214 | |
|
|
2215 | --idle; |
|
|
2216 | } |
|
|
2217 | |
|
|
2218 | --nready; |
|
|
2219 | |
|
|
2220 | X_UNLOCK (reqlock); |
|
|
2221 | |
|
|
2222 | if (req->type < 0) |
1783 | if (req->offs < 0) |
2223 | goto quit; |
1784 | req->offs += size; |
2224 | |
1785 | |
2225 | ETP_EXECUTE (self, req); |
1786 | if (!req->size) |
2226 | |
1787 | req->size = size - req->offs; |
2227 | X_LOCK (reslock); |
|
|
2228 | |
|
|
2229 | ++npending; |
|
|
2230 | |
|
|
2231 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
2232 | want_poll_cb (); |
|
|
2233 | |
|
|
2234 | etp_worker_clear (self); |
|
|
2235 | |
|
|
2236 | X_UNLOCK (reslock); |
|
|
2237 | } |
1788 | } |
2238 | |
1789 | |
2239 | quit: |
1790 | ALLOC (req->size); |
2240 | free (req); |
1791 | req->result = pread (fd, req->ptr2, req->size, req->offs); |
2241 | |
1792 | |
2242 | X_LOCK (wrklock); |
1793 | silent_close (fd); |
2243 | etp_worker_free (self); |
|
|
2244 | X_UNLOCK (wrklock); |
|
|
2245 | } |
|
|
2246 | |
1794 | |
2247 | /*****************************************************************************/ |
1795 | alloc_fail: |
|
|
1796 | ; |
|
|
1797 | } |
2248 | |
1798 | |
2249 | int ecb_cold |
1799 | int ecb_cold |
2250 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1800 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2251 | { |
1801 | { |
2252 | #if !HAVE_PREADWRITE |
1802 | eio_want_poll_cb = want_poll; |
2253 | X_MUTEX_CREATE (preadwritelock); |
1803 | eio_done_poll_cb = done_poll; |
2254 | #endif |
|
|
2255 | |
1804 | |
2256 | return etp_init (want_poll, done_poll); |
1805 | return etp_init (EIO_POOL, 0, 0, 0); |
2257 | } |
1806 | } |
2258 | |
1807 | |
2259 | ecb_inline void |
1808 | ecb_inline void |
2260 | eio_api_destroy (eio_req *req) |
1809 | eio_api_destroy (eio_req *req) |
2261 | { |
1810 | { |
2262 | free (req); |
1811 | free (req); |
2263 | } |
1812 | } |
2264 | |
1813 | |
2265 | #define REQ(rtype) \ |
1814 | #define REQ(rtype) \ |
2266 | eio_req *req; \ |
1815 | eio_req *req; \ |
2267 | \ |
1816 | \ |
2268 | req = (eio_req *)calloc (1, sizeof *req); \ |
1817 | req = (eio_req *)calloc (1, sizeof *req); \ |
2269 | if (!req) \ |
1818 | if (!req) \ |
2270 | return 0; \ |
1819 | return 0; \ |
… | |
… | |
2284 | { \ |
1833 | { \ |
2285 | eio_api_destroy (req); \ |
1834 | eio_api_destroy (req); \ |
2286 | return 0; \ |
1835 | return 0; \ |
2287 | } |
1836 | } |
2288 | |
1837 | |
|
|
1838 | #define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)]) |
|
|
1839 | |
2289 | static void |
1840 | static void |
2290 | eio_execute (etp_worker *self, eio_req *req) |
1841 | eio_execute (etp_worker *self, eio_req *req) |
2291 | { |
1842 | { |
2292 | #if HAVE_AT |
1843 | #if HAVE_AT |
2293 | int dirfd; |
1844 | int dirfd; |
… | |
… | |
2333 | : read (req->int1, req->ptr2, req->size); break; |
1884 | : read (req->int1, req->ptr2, req->size); break; |
2334 | case EIO_WRITE: req->result = req->offs >= 0 |
1885 | case EIO_WRITE: req->result = req->offs >= 0 |
2335 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1886 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
2336 | : write (req->int1, req->ptr2, req->size); break; |
1887 | : write (req->int1, req->ptr2, req->size); break; |
2337 | |
1888 | |
|
|
1889 | case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break; |
|
|
1890 | case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break; |
|
|
1891 | |
2338 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1892 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
2339 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
1893 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
2340 | |
1894 | |
2341 | #if HAVE_AT |
1895 | #if HAVE_AT |
2342 | |
1896 | |
… | |
… | |
2346 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break; |
1900 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break; |
2347 | case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break; |
1901 | case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break; |
2348 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
1902 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
2349 | case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break; |
1903 | case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break; |
2350 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
1904 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
1905 | case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break; |
2351 | |
1906 | |
2352 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
1907 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
2353 | case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
1908 | case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */ |
|
|
1909 | req->result = req->wd && SINGLEDOT (req->ptr1) |
|
|
1910 | ? rmdir (req->wd->str) |
|
|
1911 | : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
2354 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
1912 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
2355 | case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break; |
1913 | case EIO_RENAME: req->result = eio__renameat2 ( |
|
|
1914 | dirfd, |
|
|
1915 | /* complications arise because "." cannot be renamed, so we might have to expand */ |
|
|
1916 | req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1, |
|
|
1917 | WD2FD ((eio_wd)req->int3), |
|
|
1918 | req->ptr2, |
|
|
1919 | req->int2 |
|
|
1920 | ); |
|
|
1921 | break; |
2356 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
1922 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
2357 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
1923 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
2358 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1924 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
2359 | case EIO_READLINK: ALLOC (PATH_MAX); |
|
|
2360 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break; |
|
|
2361 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1925 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
2362 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1926 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1927 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
1928 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX); |
|
|
1929 | if (req->result == EIO_PATH_MAX) |
|
|
1930 | { |
|
|
1931 | req->result = -1; |
|
|
1932 | errno = ENAMETOOLONG; |
|
|
1933 | } |
|
|
1934 | break; |
2363 | case EIO_UTIME: |
1935 | case EIO_UTIME: |
2364 | case EIO_FUTIME: |
1936 | case EIO_FUTIME: |
2365 | { |
1937 | { |
2366 | struct timespec ts[2]; |
1938 | struct timespec ts[2]; |
2367 | struct timespec *times; |
1939 | struct timespec *times; |
… | |
… | |
2392 | req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
1964 | req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
2393 | case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break; |
1965 | case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break; |
2394 | case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break; |
1966 | case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break; |
2395 | case EIO_TRUNCATE: req->result = truncate (path , req->offs); break; |
1967 | case EIO_TRUNCATE: req->result = truncate (path , req->offs); break; |
2396 | case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break; |
1968 | case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break; |
|
|
1969 | case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break; |
2397 | |
1970 | |
2398 | case EIO_UNLINK: req->result = unlink (path ); break; |
1971 | case EIO_UNLINK: req->result = unlink (path ); break; |
2399 | case EIO_RMDIR: req->result = rmdir (path ); break; |
1972 | case EIO_RMDIR: req->result = rmdir (path ); break; |
2400 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
1973 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
2401 | case EIO_RENAME: req->result = rename (path , req->ptr2); break; |
1974 | case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break; |
2402 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
1975 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
2403 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
1976 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
2404 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
1977 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
2405 | case EIO_READLINK: ALLOC (PATH_MAX); |
|
|
2406 | req->result = readlink (path, req->ptr2, PATH_MAX); break; |
|
|
2407 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1978 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
2408 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1979 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1980 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
1981 | req->result = readlink (path, req->ptr2, EIO_PATH_MAX); |
|
|
1982 | if (req->result == EIO_PATH_MAX) |
|
|
1983 | { |
|
|
1984 | req->result = -1; |
|
|
1985 | errno = ENAMETOOLONG; |
|
|
1986 | } |
|
|
1987 | break; |
2409 | |
1988 | |
2410 | case EIO_UTIME: |
1989 | case EIO_UTIME: |
2411 | case EIO_FUTIME: |
1990 | case EIO_FUTIME: |
2412 | { |
1991 | { |
2413 | struct timeval tv[2]; |
1992 | struct timeval tv[2]; |
… | |
… | |
2448 | |
2027 | |
2449 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2028 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2450 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2029 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2451 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
2030 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
2452 | |
2031 | |
2453 | case EIO_CLOSE: req->result = close (req->int1); break; |
2032 | case EIO_CLOSE: req->result = eio__close (req->int1); break; |
2454 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
2033 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
2455 | case EIO_SYNC: req->result = 0; sync (); break; |
2034 | case EIO_SYNC: req->result = 0; sync (); break; |
2456 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2035 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2457 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2036 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2458 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
2037 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
… | |
… | |
2478 | req->result = select (0, 0, 0, 0, &tv); |
2057 | req->result = select (0, 0, 0, 0, &tv); |
2479 | } |
2058 | } |
2480 | #endif |
2059 | #endif |
2481 | break; |
2060 | break; |
2482 | |
2061 | |
|
|
2062 | #if 0 |
2483 | case EIO_GROUP: |
2063 | case EIO_GROUP: |
2484 | abort (); /* handled in eio_request */ |
2064 | abort (); /* handled in eio_request */ |
|
|
2065 | #endif |
2485 | |
2066 | |
2486 | case EIO_NOP: |
2067 | case EIO_NOP: |
2487 | req->result = 0; |
2068 | req->result = 0; |
2488 | break; |
2069 | break; |
2489 | |
2070 | |
… | |
… | |
2494 | default: |
2075 | default: |
2495 | req->result = EIO_ENOSYS (); |
2076 | req->result = EIO_ENOSYS (); |
2496 | break; |
2077 | break; |
2497 | } |
2078 | } |
2498 | |
2079 | |
|
|
2080 | alloc_fail: |
2499 | req->errorno = errno; |
2081 | req->errorno = errno; |
2500 | } |
2082 | } |
2501 | |
2083 | |
2502 | #ifndef EIO_NO_WRAPPERS |
2084 | #ifndef EIO_NO_WRAPPERS |
2503 | |
2085 | |
… | |
… | |
2592 | } |
2174 | } |
2593 | |
2175 | |
2594 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2176 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
2595 | { |
2177 | { |
2596 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
2178 | REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
2179 | } |
|
|
2180 | |
|
|
2181 | eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data) |
|
|
2182 | { |
|
|
2183 | REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND; |
|
|
2184 | } |
|
|
2185 | |
|
|
2186 | eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data) |
|
|
2187 | { |
|
|
2188 | REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND; |
2597 | } |
2189 | } |
2598 | |
2190 | |
2599 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2191 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2600 | { |
2192 | { |
2601 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2193 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
… | |
… | |
2746 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2338 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2747 | { |
2339 | { |
2748 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2340 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2749 | } |
2341 | } |
2750 | |
2342 | |
|
|
2343 | eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
|
|
2344 | { |
|
|
2345 | REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
2346 | } |
|
|
2347 | |
2751 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2348 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2752 | { |
2349 | { |
2753 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2350 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2754 | } |
2351 | } |
2755 | |
2352 | |
… | |
… | |
2789 | void |
2386 | void |
2790 | eio_grp_add (eio_req *grp, eio_req *req) |
2387 | eio_grp_add (eio_req *grp, eio_req *req) |
2791 | { |
2388 | { |
2792 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2389 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2793 | |
2390 | |
2794 | grp->flags |= EIO_FLAG_GROUPADD; |
2391 | grp->flags |= ETP_FLAG_GROUPADD; |
2795 | |
2392 | |
2796 | ++grp->size; |
2393 | ++grp->size; |
2797 | req->grp = grp; |
2394 | req->grp = grp; |
2798 | |
2395 | |
2799 | req->grp_prev = 0; |
2396 | req->grp_prev = 0; |