… | |
… | |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 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, |
… | |
… | |
132 | #define sync() EIO_ENOSYS () |
132 | #define sync() EIO_ENOSYS () |
133 | #define readlink(path,buf,s) EIO_ENOSYS () |
133 | #define readlink(path,buf,s) EIO_ENOSYS () |
134 | #define statvfs(path,buf) EIO_ENOSYS () |
134 | #define statvfs(path,buf) EIO_ENOSYS () |
135 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
135 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
136 | |
136 | |
|
|
137 | #define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset) |
|
|
138 | #define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset) |
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|
139 | |
|
|
140 | #if __GNUC__ |
|
|
141 | typedef long long eio_off_t; /* signed for compatibility to msvc */ |
|
|
142 | #else |
|
|
143 | typedef __int64 eio_off_t; /* unsigned not supported by msvc */ |
|
|
144 | #endif |
|
|
145 | |
|
|
146 | static eio_ssize_t |
|
|
147 | eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset) |
|
|
148 | { |
|
|
149 | OVERLAPPED o = { 0 }; |
|
|
150 | DWORD got; |
|
|
151 | |
|
|
152 | o.Offset = offset; |
|
|
153 | o.OffsetHigh = offset >> 32; |
|
|
154 | |
|
|
155 | return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o) |
|
|
156 | ? got : -1; |
|
|
157 | } |
|
|
158 | |
|
|
159 | static eio_ssize_t |
|
|
160 | eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset) |
|
|
161 | { |
|
|
162 | OVERLAPPED o = { 0 }; |
|
|
163 | DWORD got; |
|
|
164 | |
|
|
165 | o.Offset = offset; |
|
|
166 | o.OffsetHigh = offset >> 32; |
|
|
167 | |
|
|
168 | return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o) |
|
|
169 | ? got : -1; |
|
|
170 | } |
|
|
171 | |
137 | /* rename() uses MoveFile, which fails to overwrite */ |
172 | /* rename() uses MoveFile, which fails to overwrite */ |
138 | #define rename(old,neu) eio__rename (old, neu) |
173 | #define rename(old,neu) eio__rename (old, neu) |
139 | |
174 | |
140 | static int |
175 | static int |
141 | eio__rename (const char *old, const char *neu) |
176 | eio__rename (const char *old, const char *neu) |
… | |
… | |
196 | |
231 | |
197 | #else |
232 | #else |
198 | |
233 | |
199 | #include <sys/time.h> |
234 | #include <sys/time.h> |
200 | #include <sys/select.h> |
235 | #include <sys/select.h> |
201 | #include <sys/statvfs.h> |
|
|
202 | #include <unistd.h> |
236 | #include <unistd.h> |
203 | #include <signal.h> |
237 | #include <signal.h> |
204 | #include <dirent.h> |
238 | #include <dirent.h> |
|
|
239 | |
|
|
240 | #ifdef ANDROID |
|
|
241 | #include <sys/vfs.h> |
|
|
242 | #define statvfs statfs |
|
|
243 | #define fstatvfs fstatfs |
|
|
244 | #include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */ |
|
|
245 | #else |
|
|
246 | #include <sys/statvfs.h> |
|
|
247 | #endif |
205 | |
248 | |
206 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
249 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
207 | #include <sys/mman.h> |
250 | #include <sys/mman.h> |
208 | #endif |
251 | #endif |
209 | |
252 | |
… | |
… | |
281 | #endif |
324 | #endif |
282 | |
325 | |
283 | /* buffer size for various temporary buffers */ |
326 | /* buffer size for various temporary buffers */ |
284 | #define EIO_BUFSIZE 65536 |
327 | #define EIO_BUFSIZE 65536 |
285 | |
328 | |
286 | #define dBUF \ |
329 | #define dBUF \ |
287 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
330 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
288 | errno = ENOMEM; \ |
331 | errno = ENOMEM; \ |
289 | if (!eio_buf) \ |
332 | if (!eio_buf) \ |
290 | return -1 |
333 | return -1 |
291 | |
334 | |
… | |
… | |
379 | static xmutex_t wrklock; |
422 | static xmutex_t wrklock; |
380 | static xmutex_t reslock; |
423 | static xmutex_t reslock; |
381 | static xmutex_t reqlock; |
424 | static xmutex_t reqlock; |
382 | static xcond_t reqwait; |
425 | static xcond_t reqwait; |
383 | |
426 | |
384 | #if !HAVE_PREADWRITE |
|
|
385 | /* |
|
|
386 | * make our pread/pwrite emulation safe against themselves, but not against |
|
|
387 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
388 | * but that's your problem, not mine. |
|
|
389 | */ |
|
|
390 | static xmutex_t preadwritelock; |
|
|
391 | #endif |
|
|
392 | |
|
|
393 | typedef struct etp_worker |
427 | typedef struct etp_worker |
394 | { |
428 | { |
395 | struct tmpbuf tmpbuf; |
429 | struct tmpbuf tmpbuf; |
396 | |
430 | |
397 | /* locked by wrklock */ |
431 | /* locked by wrklock */ |
… | |
… | |
576 | /*TODO*/ |
610 | /*TODO*/ |
577 | assert (("unable to allocate worker thread data", wrk)); |
611 | assert (("unable to allocate worker thread data", wrk)); |
578 | |
612 | |
579 | X_LOCK (wrklock); |
613 | X_LOCK (wrklock); |
580 | |
614 | |
581 | if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) |
615 | if (xthread_create (&wrk->tid, etp_proc, (void *)wrk)) |
582 | { |
616 | { |
583 | wrk->prev = &wrk_first; |
617 | wrk->prev = &wrk_first; |
584 | wrk->next = wrk_first.next; |
618 | wrk->next = wrk_first.next; |
585 | wrk_first.next->prev = wrk; |
619 | wrk_first.next->prev = wrk; |
586 | wrk_first.next = wrk; |
620 | wrk_first.next = wrk; |
… | |
… | |
943 | } |
977 | } |
944 | |
978 | |
945 | /*****************************************************************************/ |
979 | /*****************************************************************************/ |
946 | /* work around various missing functions */ |
980 | /* work around various missing functions */ |
947 | |
981 | |
948 | #if !HAVE_PREADWRITE |
|
|
949 | # undef pread |
|
|
950 | # undef pwrite |
|
|
951 | # define pread eio__pread |
|
|
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 |
|
|
986 | |
|
|
987 | #ifndef HAVE_UTIMES |
982 | #ifndef HAVE_UTIMES |
988 | |
983 | |
989 | # undef utimes |
984 | # undef utimes |
990 | # define utimes(path,times) eio__utimes (path, times) |
985 | # define utimes(path,times) eio__utimes (path, times) |
991 | |
986 | |
… | |
… | |
1429 | |
1424 | |
1430 | if (fd >= 0) |
1425 | if (fd >= 0) |
1431 | { |
1426 | { |
1432 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1427 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1433 | req->result = readlink (tmp1, res, PATH_MAX); |
1428 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1429 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1434 | close (fd); |
1430 | close (fd); |
1435 | |
|
|
1436 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1437 | |
1431 | |
1438 | if (req->result > 0) |
1432 | if (req->result > 0) |
1439 | goto done; |
1433 | goto done; |
1440 | } |
1434 | } |
1441 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1435 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1442 | return; |
1436 | return -1; |
1443 | } |
1437 | } |
1444 | #endif |
1438 | #endif |
1445 | #endif |
1439 | #endif |
1446 | |
1440 | |
1447 | if (*rel != '/') |
1441 | if (*rel != '/') |
… | |
… | |
1931 | #ifdef DT_FIFO |
1925 | #ifdef DT_FIFO |
1932 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
1926 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
1933 | #endif |
1927 | #endif |
1934 | #ifdef DT_CHR |
1928 | #ifdef DT_CHR |
1935 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
1929 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
1936 | #endif |
1930 | #endif |
1937 | #ifdef DT_MPC |
1931 | #ifdef DT_MPC |
1938 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
1932 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
1939 | #endif |
1933 | #endif |
1940 | #ifdef DT_DIR |
1934 | #ifdef DT_DIR |
1941 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
1935 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
1942 | #endif |
1936 | #endif |
1943 | #ifdef DT_NAM |
1937 | #ifdef DT_NAM |
1944 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
1938 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
1945 | #endif |
1939 | #endif |
1946 | #ifdef DT_BLK |
1940 | #ifdef DT_BLK |
1947 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
1941 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
1948 | #endif |
1942 | #endif |
1949 | #ifdef DT_MPB |
1943 | #ifdef DT_MPB |
1950 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
1944 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
1951 | #endif |
1945 | #endif |
1952 | #ifdef DT_REG |
1946 | #ifdef DT_REG |
1953 | case DT_REG: ent->type = EIO_DT_REG; break; |
1947 | case DT_REG: ent->type = EIO_DT_REG; break; |
1954 | #endif |
1948 | #endif |
1955 | #ifdef DT_NWK |
1949 | #ifdef DT_NWK |
1956 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
1950 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
1957 | #endif |
1951 | #endif |
1958 | #ifdef DT_CMP |
1952 | #ifdef DT_CMP |
1959 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
1953 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
1960 | #endif |
1954 | #endif |
1961 | #ifdef DT_LNK |
1955 | #ifdef DT_LNK |
1962 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
1956 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
1963 | #endif |
1957 | #endif |
1964 | #ifdef DT_SOCK |
1958 | #ifdef DT_SOCK |
1965 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
1959 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
… | |
… | |
2240 | free (req); |
2234 | free (req); |
2241 | |
2235 | |
2242 | X_LOCK (wrklock); |
2236 | X_LOCK (wrklock); |
2243 | etp_worker_free (self); |
2237 | etp_worker_free (self); |
2244 | X_UNLOCK (wrklock); |
2238 | X_UNLOCK (wrklock); |
|
|
2239 | |
|
|
2240 | return 0; |
2245 | } |
2241 | } |
2246 | |
2242 | |
2247 | /*****************************************************************************/ |
2243 | /*****************************************************************************/ |
2248 | |
2244 | |
2249 | int ecb_cold |
2245 | int ecb_cold |
2250 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2246 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2251 | { |
2247 | { |
2252 | #if !HAVE_PREADWRITE |
|
|
2253 | X_MUTEX_CREATE (preadwritelock); |
|
|
2254 | #endif |
|
|
2255 | |
|
|
2256 | return etp_init (want_poll, done_poll); |
2248 | return etp_init (want_poll, done_poll); |
2257 | } |
2249 | } |
2258 | |
2250 | |
2259 | ecb_inline void |
2251 | ecb_inline void |
2260 | eio_api_destroy (eio_req *req) |
2252 | eio_api_destroy (eio_req *req) |
2261 | { |
2253 | { |
2262 | free (req); |
2254 | free (req); |
2263 | } |
2255 | } |
2264 | |
2256 | |
2265 | #define REQ(rtype) \ |
2257 | #define REQ(rtype) \ |
2266 | eio_req *req; \ |
2258 | eio_req *req; \ |
2267 | \ |
2259 | \ |
2268 | req = (eio_req *)calloc (1, sizeof *req); \ |
2260 | req = (eio_req *)calloc (1, sizeof *req); \ |
2269 | if (!req) \ |
2261 | if (!req) \ |
2270 | return 0; \ |
2262 | return 0; \ |
… | |
… | |
2284 | { \ |
2276 | { \ |
2285 | eio_api_destroy (req); \ |
2277 | eio_api_destroy (req); \ |
2286 | return 0; \ |
2278 | return 0; \ |
2287 | } |
2279 | } |
2288 | |
2280 | |
|
|
2281 | #define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)]) |
|
|
2282 | |
2289 | static void |
2283 | static void |
2290 | eio_execute (etp_worker *self, eio_req *req) |
2284 | eio_execute (etp_worker *self, eio_req *req) |
2291 | { |
2285 | { |
2292 | #if HAVE_AT |
2286 | #if HAVE_AT |
2293 | int dirfd; |
2287 | int dirfd; |
… | |
… | |
2348 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
2342 | 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; |
2343 | 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; |
2344 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
2351 | |
2345 | |
2352 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
2346 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
2353 | case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
2347 | case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */ |
|
|
2348 | req->result = req->wd && SINGLEDOT (req->ptr1) |
|
|
2349 | ? rmdir (req->wd->str) |
|
|
2350 | : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
2354 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
2351 | 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; |
2352 | case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */ |
|
|
2353 | req->result = req->wd && SINGLEDOT (req->ptr1) |
|
|
2354 | ? rename (req->wd->str, req->ptr2) |
|
|
2355 | : renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break; |
2356 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
2356 | 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; |
2357 | 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; |
2358 | 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); |
2359 | case EIO_READLINK: ALLOC (PATH_MAX); |
2360 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break; |
2360 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break; |