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Comparing libeio/eio.c (file contents):
Revision 1.96 by root, Tue Jul 19 05:20:36 2011 UTC vs.
Revision 1.126 by root, Fri Dec 28 07:33:41 2012 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012 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,
…		…
43		43
44	#include "eio.h"	44	#include "eio.h"
45	#include "ecb.h"	45	#include "ecb.h"
46		46
47	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
48	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define X_STACKSIZE EIO_STACKSIZE
49	#endif	49	#endif
50	#include "xthread.h"	50	#include "xthread.h"
51		51
52	#include <errno.h>	52	#include <errno.h>
53	#include <stddef.h>	53	#include <stddef.h>
…		…
105	#ifdef _WIN32	105	#ifdef _WIN32
106		106
107	#undef PAGESIZE	107	#undef PAGESIZE
108	#define PAGESIZE 4096 /* GetSystemInfo? */	108	#define PAGESIZE 4096 /* GetSystemInfo? */
109		109
		110	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		111
110	#ifdef EIO_STRUCT_STATI64	112	#ifdef EIO_STRUCT_STATI64
		113	/* look at perl's non-sloppy stat */
111	#define stat(path,buf) _stati64 (path,buf)	114	#define stat(path,buf) _stati64 (path,buf)
112	#define fstat(fd,buf) _fstati64 (fd,buf)	115	#define fstat(fd,buf) _fstati64 (fd,buf)
113	#endif	116	#endif
114	#define lstat(path,buf) stat (path,buf)	117	#define lstat(path,buf) stat (path,buf)
115	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))	118	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
…		…
129	#define sync() EIO_ENOSYS ()	132	#define sync() EIO_ENOSYS ()
130	#define readlink(path,buf,s) EIO_ENOSYS ()	133	#define readlink(path,buf,s) EIO_ENOSYS ()
131	#define statvfs(path,buf) EIO_ENOSYS ()	134	#define statvfs(path,buf) EIO_ENOSYS ()
132	#define fstatvfs(fd,buf) EIO_ENOSYS ()	135	#define fstatvfs(fd,buf) EIO_ENOSYS ()
133		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)
		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
		172	/* rename() uses MoveFile, which fails to overwrite */
		173	#define rename(old,neu) eio__rename (old, neu)
		174
		175	static int
		176	eio__rename (const char *old, const char *neu)
		177	{
		178	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		179	return 0;
		180
		181	/* should steal _dosmaperr */
		182	switch (GetLastError ())
		183	{
		184	case ERROR_FILE_NOT_FOUND:
		185	case ERROR_PATH_NOT_FOUND:
		186	case ERROR_INVALID_DRIVE:
		187	case ERROR_NO_MORE_FILES:
		188	case ERROR_BAD_NETPATH:
		189	case ERROR_BAD_NET_NAME:
		190	case ERROR_BAD_PATHNAME:
		191	case ERROR_FILENAME_EXCED_RANGE:
		192	errno = ENOENT;
		193	break;
		194
		195	default:
		196	errno = EACCES;
		197	break;
		198	}
		199
		200	return -1;
		201	}
		202
134	/* we could even stat and see if it exists */	203	/* we could even stat and see if it exists */
135	static int	204	static int
136	symlink (const char *old, const char *neu)	205	symlink (const char *old, const char *neu)
137	{	206	{
138	#if WINVER >= 0x0600	207	#if WINVER >= 0x0600
…		…
174	#endif	243	#endif
175		244
176	#define D_NAME(entp) entp->d_name	245	#define D_NAME(entp) entp->d_name
177		246
178	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	247	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
179	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	248	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
180	#define _DIRENT_HAVE_D_TYPE /* sigh */	249	#define _DIRENT_HAVE_D_TYPE /* sigh */
181	#define D_INO(de) (de)->d_fileno	250	#define D_INO(de) (de)->d_fileno
182	#define D_NAMLEN(de) (de)->d_namlen	251	#define D_NAMLEN(de) (de)->d_namlen
183	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	252	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
184	#define D_INO(de) (de)->d_ino	253	#define D_INO(de) (de)->d_ino
…		…
199		268
200	#endif	269	#endif
201		270
202	#if HAVE_UTIMES	271	#if HAVE_UTIMES
203	# include <utime.h>	272	# include <utime.h>
		273	#endif
		274
		275	#if HAVE_SYS_SYSCALL_H
		276	# include <sys/syscall.h>
		277	#endif
		278
		279	#if HAVE_SYS_PRCTL_H
		280	# include <sys/prctl.h>
204	#endif	281	#endif
205		282
206	#if HAVE_SENDFILE	283	#if HAVE_SENDFILE
207	# if __linux	284	# if __linux
208	# include <sys/sendfile.h>	285	# include <sys/sendfile.h>
…		…
239	#endif	316	#endif
240		317
241	/* buffer size for various temporary buffers */	318	/* buffer size for various temporary buffers */
242	#define EIO_BUFSIZE 65536	319	#define EIO_BUFSIZE 65536
243		320
244	#define dBUF \	321	#define dBUF \
245	char *eio_buf = malloc (EIO_BUFSIZE); \	322	char *eio_buf = malloc (EIO_BUFSIZE); \
246	errno = ENOMEM; \	323	errno = ENOMEM; \
247	if (!eio_buf) \	324	if (!eio_buf) \
248	return -1	325	return -1
249		326
250	#define FUBd \	327	#define FUBd \
251	free (eio_buf)	328	free (eio_buf)
252		329
253	#define EIO_TICKS ((1000000 + 1023) >> 10)	330	#define EIO_TICKS ((1000000 + 1023) >> 10)
		331
		332	/*****************************************************************************/
		333
		334	struct tmpbuf
		335	{
		336	void *ptr;
		337	int len;
		338	};
		339
		340	static void *
		341	tmpbuf_get (struct tmpbuf *buf, int len)
		342	{
		343	if (buf->len < len)
		344	{
		345	free (buf->ptr);
		346	buf->ptr = malloc (buf->len = len);
		347	}
		348
		349	return buf->ptr;
		350	}
		351
		352	struct tmpbuf;
		353
		354	#if _POSIX_VERSION >= 200809L
		355	#define HAVE_AT 1
		356	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		357	#ifndef O_SEARCH
		358	#define O_SEARCH O_RDONLY
		359	#endif
		360	#else
		361	#define HAVE_AT 0
		362	static const char *wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path);
		363	#endif
		364
		365	struct eio_pwd
		366	{
		367	#if HAVE_AT
		368	int fd;
		369	#endif
		370	int len;
		371	char str[1]; /* actually, a 0-terminated canonical path */
		372	};
		373
		374	/*****************************************************************************/
254		375
255	#define ETP_PRI_MIN EIO_PRI_MIN	376	#define ETP_PRI_MIN EIO_PRI_MIN
256	#define ETP_PRI_MAX EIO_PRI_MAX	377	#define ETP_PRI_MAX EIO_PRI_MAX
257		378
258	struct etp_worker;	379	struct etp_worker;
…		…
282	static void (*done_poll_cb) (void);	403	static void (*done_poll_cb) (void);
283		404
284	static unsigned int max_poll_time; /* reslock */	405	static unsigned int max_poll_time; /* reslock */
285	static unsigned int max_poll_reqs; /* reslock */	406	static unsigned int max_poll_reqs; /* reslock */
286		407
287	static volatile unsigned int nreqs; /* reqlock */	408	static unsigned int nreqs; /* reqlock */
288	static volatile unsigned int nready; /* reqlock */	409	static unsigned int nready; /* reqlock */
289	static volatile unsigned int npending; /* reqlock */	410	static unsigned int npending; /* reqlock */
290	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */	411	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
291	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */	412	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
292		413
293	static xmutex_t wrklock;	414	static xmutex_t wrklock;
294	static xmutex_t reslock;	415	static xmutex_t reslock;
295	static xmutex_t reqlock;	416	static xmutex_t reqlock;
296	static xcond_t reqwait;	417	static xcond_t reqwait;
297		418
298	#if !HAVE_PREADWRITE
299	/*
300	* make our pread/pwrite emulation safe against themselves, but not against
301	* normal read/write by using a mutex. slows down execution a lot,
302	* but that's your problem, not mine.
303	*/
304	static xmutex_t preadwritelock;
305	#endif
306
307	typedef struct etp_worker	419	typedef struct etp_worker
308	{	420	{
		421	struct tmpbuf tmpbuf;
		422
309	/* locked by wrklock */	423	/* locked by wrklock */
310	struct etp_worker *prev, *next;	424	struct etp_worker *prev, *next;
311		425
312	xthread_t tid;	426	xthread_t tid;
313		427
314	/* locked by reslock, reqlock or wrklock */
315	ETP_REQ *req; /* currently processed request */
316
317	#ifdef ETP_WORKER_COMMON	428	#ifdef ETP_WORKER_COMMON
318	ETP_WORKER_COMMON	429	ETP_WORKER_COMMON
319	#endif	430	#endif
320	} etp_worker;	431	} etp_worker;
321		432
…		…
324	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	435	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
325	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	436	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
326		437
327	/* worker threads management */	438	/* worker threads management */
328		439
329	static void ecb_cold	440	static void
330	etp_worker_clear (etp_worker *wrk)	441	etp_worker_clear (etp_worker *wrk)
331	{	442	{
332	}	443	}
333		444
334	static void ecb_cold	445	static void ecb_cold
335	etp_worker_free (etp_worker *wrk)	446	etp_worker_free (etp_worker *wrk)
336	{	447	{
		448	free (wrk->tmpbuf.ptr);
		449
337	wrk->next->prev = wrk->prev;	450	wrk->next->prev = wrk->prev;
338	wrk->prev->next = wrk->next;	451	wrk->prev->next = wrk->next;
339		452
340	free (wrk);	453	free (wrk);
341	}	454	}
…		…
489	/*TODO*/	602	/*TODO*/
490	assert (("unable to allocate worker thread data", wrk));	603	assert (("unable to allocate worker thread data", wrk));
491		604
492	X_LOCK (wrklock);	605	X_LOCK (wrklock);
493		606
494	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))	607	if (xthread_create (&wrk->tid, etp_proc, (void *)wrk))
495	{	608	{
496	wrk->prev = &wrk_first;	609	wrk->prev = &wrk_first;
497	wrk->next = wrk_first.next;	610	wrk->next = wrk_first.next;
498	wrk_first.next->prev = wrk;	611	wrk_first.next->prev = wrk;
499	wrk_first.next = wrk;	612	wrk_first.next = wrk;
…		…
519	}	632	}
520		633
521	static void ecb_cold	634	static void ecb_cold
522	etp_end_thread (void)	635	etp_end_thread (void)
523	{	636	{
524	eio_req *req = calloc (1, sizeof (eio_req));	637	eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */
525		638
526	req->type = -1;	639	req->type = -1;
527	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	640	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
528		641
529	X_LOCK (reqlock);	642	X_LOCK (reqlock);
…		…
856	}	969	}
857		970
858	/*****************************************************************************/	971	/*****************************************************************************/
859	/* work around various missing functions */	972	/* work around various missing functions */
860		973
861	#if !HAVE_PREADWRITE
862	# undef pread
863	# undef pwrite
864	# define pread eio__pread
865	# define pwrite eio__pwrite
866
867	static eio_ssize_t
868	eio__pread (int fd, void *buf, size_t count, off_t offset)
869	{
870	eio_ssize_t res;
871	off_t ooffset;
872
873	X_LOCK (preadwritelock);
874	ooffset = lseek (fd, 0, SEEK_CUR);
875	lseek (fd, offset, SEEK_SET);
876	res = read (fd, buf, count);
877	lseek (fd, ooffset, SEEK_SET);
878	X_UNLOCK (preadwritelock);
879
880	return res;
881	}
882
883	static eio_ssize_t
884	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
885	{
886	eio_ssize_t res;
887	off_t ooffset;
888
889	X_LOCK (preadwritelock);
890	ooffset = lseek (fd, 0, SEEK_CUR);
891	lseek (fd, offset, SEEK_SET);
892	res = write (fd, buf, count);
893	lseek (fd, ooffset, SEEK_SET);
894	X_UNLOCK (preadwritelock);
895
896	return res;
897	}
898	#endif
899
900	#ifndef HAVE_UTIMES	974	#ifndef HAVE_UTIMES
901		975
902	# undef utimes	976	# undef utimes
903	# define utimes(path,times) eio__utimes (path, times)	977	# define utimes(path,times) eio__utimes (path, times)
904		978
…		…
936		1010
937	#if !HAVE_FDATASYNC	1011	#if !HAVE_FDATASYNC
938	# undef fdatasync	1012	# undef fdatasync
939	# define fdatasync(fd) fsync (fd)	1013	# define fdatasync(fd) fsync (fd)
940	#endif	1014	#endif
		1015
		1016	static int
		1017	eio__syncfs (int fd)
		1018	{
		1019	int res;
		1020
		1021	#if HAVE_SYS_SYNCFS
		1022	res = (int)syscall (__NR_syncfs, (int)(fd));
		1023	#else
		1024	res = EIO_ENOSYS ();
		1025	#endif
		1026
		1027	if (res < 0 && errno == ENOSYS && fd >= 0)
		1028	sync ();
		1029
		1030	return res;
		1031	}
941		1032
942	/* sync_file_range always needs emulation */	1033	/* sync_file_range always needs emulation */
943	static int	1034	static int
944	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	1035	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
945	{	1036	{
…		…
968	}	1059	}
969		1060
970	static int	1061	static int
971	eio__fallocate (int fd, int mode, off_t offset, size_t len)	1062	eio__fallocate (int fd, int mode, off_t offset, size_t len)
972	{	1063	{
973	#if HAVE_FALLOCATE	1064	#if HAVE_LINUX_FALLOCATE
974	return fallocate (fd, mode, offset, len);	1065	return fallocate (fd, mode, offset, len);
975	#else	1066	#else
976	errno = ENOSYS;	1067	return EIO_ENOSYS ();
977	return -1;
978	#endif	1068	#endif
979	}	1069	}
980		1070
981	#if !HAVE_READAHEAD	1071	#if !HAVE_READAHEAD
982	# undef readahead	1072	# undef readahead
…		…
997	todo -= len;	1087	todo -= len;
998	}	1088	}
999		1089
1000	FUBd;	1090	FUBd;
1001		1091
1002	errno = 0;	1092	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		1093	/* but not for e.g. EIO or eof, so we also never fail */
1003	return count;	1094	return 0;
1004	}	1095	}
1005		1096
1006	#endif	1097	#endif
1007		1098
1008	/* sendfile always needs emulation */	1099	/* sendfile always needs emulation */
…		…
1043		1134
1044	/* according to source inspection, this is correct, and useful behaviour */	1135	/* according to source inspection, this is correct, and useful behaviour */
1045	if (sbytes)	1136	if (sbytes)
1046	res = sbytes;	1137	res = sbytes;
1047		1138
1048	# elif defined (__APPLE__)	1139	# elif defined __APPLE__
1049	off_t sbytes = count;	1140	off_t sbytes = count;
1050	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1141	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1051		1142
1052	/* according to the manpage, sbytes is always valid */	1143	/* according to the manpage, sbytes is always valid */
1053	if (sbytes)	1144	if (sbytes)
…		…
1080	HANDLE h = TO_SOCKET (ifd);	1171	HANDLE h = TO_SOCKET (ifd);
1081	SetFilePointer (h, offset, 0, FILE_BEGIN);	1172	SetFilePointer (h, offset, 0, FILE_BEGIN);
1082	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1173	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1083		1174
1084	#else	1175	#else
1085	res = -1;	1176	res = EIO_ENOSYS ();
1086	errno = ENOSYS;
1087	#endif	1177	#endif
1088		1178
1089	/* we assume sendfile can copy at least 128mb in one go */	1179	/* we assume sendfile can copy at least 128mb in one go */
1090	if (res <= 128 * 1024 * 1024)	1180	if (res <= 128 * 1024 * 1024)
1091	{	1181	{
…		…
1278		1368
1279	/*****************************************************************************/	1369	/*****************************************************************************/
1280	/* requests implemented outside eio_execute, because they are so large */	1370	/* requests implemented outside eio_execute, because they are so large */
1281		1371
1282	static void	1372	static void
1283	eio__realpath (eio_req *req, etp_worker *self)	1373	eio__lseek (eio_req *req)
1284	{	1374	{
1285	char *rel = req->ptr1;	1375	/* this usually gets optimised away completely, or your compiler sucks, */
		1376	/* or the whence constants really are not 0, 1, 2 */
		1377	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		1378	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		1379	: req->int2 == EIO_SEEK_END ? SEEK_END
		1380	: req->int2;
		1381
		1382	req->offs = lseek (req->int1, req->offs, whence);
		1383	req->result = req->offs == (off_t)-1 ? -1 : 0;
		1384	}
		1385
		1386	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		1387	static int
		1388	eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1389	{
		1390	const char *rel = path;
1286	char *res;	1391	char *res;
1287	char *tmp1, *tmp2;	1392	char *tmp1, *tmp2;
1288	#if SYMLOOP_MAX > 32	1393	#if SYMLOOP_MAX > 32
1289	int symlinks = SYMLOOP_MAX;	1394	int symlinks = SYMLOOP_MAX;
1290	#else	1395	#else
1291	int symlinks = 32;	1396	int symlinks = 32;
1292	#endif	1397	#endif
1293		1398
1294	req->result = -1;
1295
1296	errno = EINVAL;	1399	errno = EINVAL;
1297	if (!rel)	1400	if (!rel)
1298	return;	1401	return -1;
1299		1402
1300	errno = ENOENT;	1403	errno = ENOENT;
1301	if (!*rel)	1404	if (!*rel)
1302	return;	1405	return -1;
1303		1406
1304	if (!req->ptr2)	1407	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
1305	{
1306	X_LOCK (wrklock);
1307	req->flags |= EIO_FLAG_PTR2_FREE;
1308	X_UNLOCK (wrklock);
1309	req->ptr2 = malloc (PATH_MAX * 3);
1310
1311	errno = ENOMEM;
1312	if (!req->ptr2)
1313	return;
1314	}
1315
1316	res = req->ptr2;
1317	tmp1 = res + PATH_MAX;	1408	tmp1 = res + PATH_MAX;
1318	tmp2 = tmp1 + PATH_MAX;	1409	tmp2 = tmp1 + PATH_MAX;
1319		1410
1320	#if 0 /* disabled, the musl way to do things is just too racy */	1411	#if 0 /* disabled, the musl way to do things is just too racy */
1321	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1412	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1325		1416
1326	if (fd >= 0)	1417	if (fd >= 0)
1327	{	1418	{
1328	sprintf (tmp1, "/proc/self/fd/%d", fd);	1419	sprintf (tmp1, "/proc/self/fd/%d", fd);
1329	req->result = readlink (tmp1, res, PATH_MAX);	1420	req->result = readlink (tmp1, res, PATH_MAX);
		1421	/* here we should probably stat the open file and the disk file, to make sure they still match */
1330	close (fd);	1422	close (fd);
1331
1332	/* here we should probably stat the open file and the disk file, to make sure they still match */
1333		1423
1334	if (req->result > 0)	1424	if (req->result > 0)
1335	goto done;	1425	goto done;
1336	}	1426	}
1337	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)	1427	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1338	return;	1428	return -1;
1339	}	1429	}
1340	#endif	1430	#endif
1341	#endif	1431	#endif
1342		1432
1343	if (*rel != '/')	1433	if (*rel != '/')
1344	{	1434	{
		1435	int len;
		1436
		1437	errno = ENOENT;
		1438	if (wd == EIO_INVALID_WD)
		1439	return -1;
		1440
		1441	if (wd == EIO_CWD)
		1442	{
1345	if (!getcwd (res, PATH_MAX))	1443	if (!getcwd (res, PATH_MAX))
1346	return;	1444	return -1;
		1445
		1446	len = strlen (res);
		1447	}
		1448	else
		1449	memcpy (res, wd->str, len = wd->len);
1347		1450
1348	if (res [1]) /* only use if not / */	1451	if (res [1]) /* only use if not / */
1349	res += strlen (res);	1452	res += len;
1350	}	1453	}
1351		1454
1352	while (*rel)	1455	while (*rel)
1353	{	1456	{
1354	eio_ssize_t len, linklen;	1457	eio_ssize_t len, linklen;
1355	char *beg = rel;	1458	const char *beg = rel;
1356		1459
1357	while (*rel && *rel != '/')	1460	while (*rel && *rel != '/')
1358	++rel;	1461	++rel;
1359		1462
1360	len = rel - beg;	1463	len = rel - beg;
…		…
1372		1475
1373	if (beg [1] == '.' && len == 2)	1476	if (beg [1] == '.' && len == 2)
1374	{	1477	{
1375	/* .. - back up one component, if possible */	1478	/* .. - back up one component, if possible */
1376		1479
1377	while (res != req->ptr2)	1480	while (res != tmpbuf->ptr)
1378	if (*--res == '/')	1481	if (*--res == '/')
1379	break;	1482	break;
1380		1483
1381	continue;	1484	continue;
1382	}	1485	}
1383	}	1486	}
1384		1487
1385	errno = ENAMETOOLONG;	1488	errno = ENAMETOOLONG;
1386	if (res + 1 + len + 1 >= tmp1)	1489	if (res + 1 + len + 1 >= tmp1)
1387	return;	1490	return -1;
1388		1491
1389	/* copy one component */	1492	/* copy one component */
1390	*res = '/';	1493	*res = '/';
1391	memcpy (res + 1, beg, len);	1494	memcpy (res + 1, beg, len);
1392		1495
1393	/* zero-terminate, for readlink */	1496	/* zero-terminate, for readlink */
1394	res [len + 1] = 0;	1497	res [len + 1] = 0;
1395		1498
1396	/* now check if it's a symlink */	1499	/* now check if it's a symlink */
1397	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1500	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1398		1501
1399	if (linklen < 0)	1502	if (linklen < 0)
1400	{	1503	{
1401	if (errno != EINVAL)	1504	if (errno != EINVAL)
1402	return;	1505	return -1;
1403		1506
1404	/* it's a normal directory. hopefully */	1507	/* it's a normal directory. hopefully */
1405	res += len + 1;	1508	res += len + 1;
1406	}	1509	}
1407	else	1510	else
…		…
1409	/* yay, it was a symlink - build new path in tmp2 */	1512	/* yay, it was a symlink - build new path in tmp2 */
1410	int rellen = strlen (rel);	1513	int rellen = strlen (rel);
1411		1514
1412	errno = ENAMETOOLONG;	1515	errno = ENAMETOOLONG;
1413	if (linklen + 1 + rellen >= PATH_MAX)	1516	if (linklen + 1 + rellen >= PATH_MAX)
1414	return;	1517	return -1;
1415		1518
1416	errno = ELOOP;	1519	errno = ELOOP;
1417	if (!--symlinks)	1520	if (!--symlinks)
1418	return;	1521	return -1;
1419		1522
1420	if (*tmp1 == '/')	1523	if (*tmp1 == '/')
1421	res = req->ptr2; /* symlink resolves to an absolute path */	1524	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1422		1525
1423	/* we need to be careful, as rel might point into tmp2 already */	1526	/* we need to be careful, as rel might point into tmp2 already */
1424	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1527	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1425	tmp2 [linklen] = '/';	1528	tmp2 [linklen] = '/';
1426	memcpy (tmp2, tmp1, linklen);	1529	memcpy (tmp2, tmp1, linklen);
…		…
1428	rel = tmp2;	1531	rel = tmp2;
1429	}	1532	}
1430	}	1533	}
1431		1534
1432	/* special case for the lone root path */	1535	/* special case for the lone root path */
1433	if (res == req->ptr2)	1536	if (res == tmpbuf->ptr)
1434	*res++ = '/';	1537	*res++ = '/';
1435		1538
1436	req->result = res - (char *)req->ptr2;	1539	return res - (char *)tmpbuf->ptr;
1437
1438	done:
1439	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1440	}	1540	}
1441		1541
1442	static signed char	1542	static signed char
1443	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1543	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1444	{	1544	{
…		…
1632	#ifdef _WIN32	1732	#ifdef _WIN32
1633	{	1733	{
1634	int len = strlen ((const char *)req->ptr1);	1734	int len = strlen ((const char *)req->ptr1);
1635	char *path = malloc (MAX_PATH);	1735	char *path = malloc (MAX_PATH);
1636	const char *fmt;	1736	const char *fmt;
		1737	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1637		1738
1638	if (!len)	1739	if (!len)
1639	fmt = "./*";	1740	fmt = "./*";
1640	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1741	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1641	fmt = "%s*";	1742	fmt = "%s*";
1642	else	1743	else
1643	fmt = "%s/*";	1744	fmt = "%s/*";
1644		1745
1645	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1746	_snprintf (path, MAX_PATH, fmt, reqpath);
1646	dirp = FindFirstFile (path, &entp);	1747	dirp = FindFirstFile (path, &entp);
1647	free (path);	1748	free (path);
1648		1749
1649	if (dirp == INVALID_HANDLE_VALUE)	1750	if (dirp == INVALID_HANDLE_VALUE)
1650	{	1751	{
1651	dirp = 0;	1752	/* should steal _dosmaperr */
1652
1653	switch (GetLastError ())	1753	switch (GetLastError ())
1654	{	1754	{
1655	case ERROR_FILE_NOT_FOUND:	1755	case ERROR_FILE_NOT_FOUND:
1656	req->result = 0;	1756	req->result = 0;
1657	break;	1757	break;
1658		1758
1659	case ERROR_INVALID_NAME:	1759	case ERROR_INVALID_NAME:
1660	case ERROR_PATH_NOT_FOUND:	1760	case ERROR_PATH_NOT_FOUND:
1661	case ERROR_NO_MORE_FILES:	1761	case ERROR_NO_MORE_FILES:
1662	errno = ENOENT;	1762	errno = ENOENT;
1663	break;	1763	break;
1664		1764
1665	case ERROR_NOT_ENOUGH_MEMORY:	1765	case ERROR_NOT_ENOUGH_MEMORY:
1666	errno = ENOMEM;	1766	errno = ENOMEM;
1667	break;	1767	break;
1668		1768
1669	default:	1769	default:
1670	errno = EINVAL;	1770	errno = EINVAL;
1671	break;	1771	break;
1672	}	1772	}
		1773
		1774	return;
1673	}	1775	}
1674	}	1776	}
1675	#else	1777	#else
		1778	#if HAVE_AT
		1779	if (req->wd)
		1780	{
		1781	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1782
		1783	if (fd < 0)
		1784	return;
		1785
		1786	dirp = fdopendir (fd);
		1787
		1788	if (!dirp)
		1789	close (fd);
		1790	}
		1791	else
1676	dirp = opendir (req->ptr1);	1792	dirp = opendir (req->ptr1);
		1793	#else
		1794	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1795	#endif
		1796
		1797	if (!dirp)
		1798	return;
1677	#endif	1799	#endif
1678		1800
1679	if (req->flags & EIO_FLAG_PTR1_FREE)	1801	if (req->flags & EIO_FLAG_PTR1_FREE)
1680	free (req->ptr1);	1802	free (req->ptr1);
1681		1803
1682	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1804	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1683	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1805	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1684	req->ptr2 = names = malloc (namesalloc);	1806	req->ptr2 = names = malloc (namesalloc);
1685		1807
1686	if (dirp && names && (!flags || dents))	1808	if (!names || (flags && !dents))
		1809	return;
		1810
1687	for (;;)	1811	for (;;)
1688	{	1812	{
1689	int done;	1813	int done;
1690		1814
1691	#ifdef _WIN32	1815	#ifdef _WIN32
1692	done = !dirp;	1816	done = !dirp;
1693	#else	1817	#else
1694	errno = 0;	1818	errno = 0;
1695	entp = readdir (dirp);	1819	entp = readdir (dirp);
1696	done = !entp;	1820	done = !entp;
1697	#endif	1821	#endif
1698		1822
1699	if (done)	1823	if (done)
1700	{	1824	{
1701	#ifndef _WIN32	1825	#ifndef _WIN32
1702	int old_errno = errno;	1826	int old_errno = errno;
1703	closedir (dirp);	1827	closedir (dirp);
1704	errno = old_errno;	1828	errno = old_errno;
1705		1829
1706	if (errno)	1830	if (errno)
1707	break;	1831	break;
1708	#endif	1832	#endif
1709		1833
1710	/* sort etc. */	1834	/* sort etc. */
1711	req->int1 = flags;	1835	req->int1 = flags;
1712	req->result = dentoffs;	1836	req->result = dentoffs;
1713		1837
1714	if (flags & EIO_READDIR_STAT_ORDER)	1838	if (flags & EIO_READDIR_STAT_ORDER)
1715	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);	1839	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1716	else if (flags & EIO_READDIR_DIRS_FIRST)	1840	else if (flags & EIO_READDIR_DIRS_FIRST)
1717	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1841	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1718	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1842	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1719	else	1843	else
		1844	{
		1845	/* in this case, all is known, and we just put dirs first and sort them */
		1846	eio_dirent *oth = dents + dentoffs;
		1847	eio_dirent *dir = dents;
		1848
		1849	/* now partition dirs to the front, and non-dirs to the back */
		1850	/* by walking from both sides and swapping if necessary */
		1851	while (oth > dir)
		1852	{
		1853	if (dir->type == EIO_DT_DIR)
		1854	++dir;
		1855	else if ((--oth)->type == EIO_DT_DIR)
		1856	{
		1857	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1858
		1859	++dir;
		1860	}
		1861	}
		1862
		1863	/* now sort the dirs only (dirs all have the same score) */
		1864	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1865	}
		1866
		1867	break;
		1868	}
		1869
		1870	/* now add the entry to our list(s) */
		1871	name = D_NAME (entp);
		1872
		1873	/* skip . and .. entries */
		1874	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1875	{
		1876	int len = D_NAMLEN (entp) + 1;
		1877
		1878	while (ecb_expect_false (namesoffs + len > namesalloc))
		1879	{
		1880	namesalloc *= 2;
		1881	req->ptr2 = names = realloc (names, namesalloc);
		1882
		1883	if (!names)
		1884	break;
		1885	}
		1886
		1887	memcpy (names + namesoffs, name, len);
		1888
		1889	if (dents)
		1890	{
		1891	struct eio_dirent *ent;
		1892
		1893	if (ecb_expect_false (dentoffs == dentalloc))
1720	{	1894	{
1721	/* in this case, all is known, and we just put dirs first and sort them */	1895	dentalloc *= 2;
		1896	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1897
		1898	if (!dents)
		1899	break;
		1900	}
		1901
1722	eio_dirent *oth = dents + dentoffs;	1902	ent = dents + dentoffs;
1723	eio_dirent *dir = dents;
1724		1903
1725	/* now partition dirs to the front, and non-dirs to the back */	1904	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1726	/* by walking from both sides and swapping if necessary */	1905	ent->namelen = len - 1;
1727	while (oth > dir)	1906	ent->inode = D_INO (entp);
		1907
		1908	inode_bits |= ent->inode;
		1909
		1910	switch (D_TYPE (entp))
		1911	{
		1912	default:
		1913	ent->type = EIO_DT_UNKNOWN;
		1914	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1915	break;
		1916
		1917	#ifdef DT_FIFO
		1918	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1919	#endif
		1920	#ifdef DT_CHR
		1921	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1922	#endif
		1923	#ifdef DT_MPC
		1924	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1925	#endif
		1926	#ifdef DT_DIR
		1927	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1928	#endif
		1929	#ifdef DT_NAM
		1930	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1931	#endif
		1932	#ifdef DT_BLK
		1933	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1934	#endif
		1935	#ifdef DT_MPB
		1936	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1937	#endif
		1938	#ifdef DT_REG
		1939	case DT_REG: ent->type = EIO_DT_REG; break;
		1940	#endif
		1941	#ifdef DT_NWK
		1942	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1943	#endif
		1944	#ifdef DT_CMP
		1945	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1946	#endif
		1947	#ifdef DT_LNK
		1948	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1949	#endif
		1950	#ifdef DT_SOCK
		1951	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1952	#endif
		1953	#ifdef DT_DOOR
		1954	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1955	#endif
		1956	#ifdef DT_WHT
		1957	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1958	#endif
		1959	}
		1960
		1961	ent->score = 7;
		1962
		1963	if (flags & EIO_READDIR_DIRS_FIRST)
		1964	{
		1965	if (ent->type == EIO_DT_UNKNOWN)
1728	{	1966	{
1729	if (dir->type == EIO_DT_DIR)	1967	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1730	++dir;	1968	ent->score = 1;
1731	else if ((--oth)->type == EIO_DT_DIR)	1969	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1732	{	1970	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1733	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1734
1735	++dir;
1736	}
1737	}	1971	}
1738		1972	else if (ent->type == EIO_DT_DIR)
1739	/* now sort the dirs only (dirs all have the same score) */	1973	ent->score = 0;
1740	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1741	}	1974	}
1742
1743	break;
1744	}
1745
1746	/* now add the entry to our list(s) */
1747	name = D_NAME (entp);
1748
1749	/* skip . and .. entries */
1750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1751	{
1752	int len = D_NAMLEN (entp) + 1;
1753
1754	while (ecb_expect_false (namesoffs + len > namesalloc))
1755	{
1756	namesalloc *= 2;
1757	req->ptr2 = names = realloc (names, namesalloc);
1758
1759	if (!names)
1760	break;
1761	}	1975	}
1762		1976
1763	memcpy (names + namesoffs, name, len);
1764
1765	if (dents)
1766	{
1767	struct eio_dirent *ent;
1768
1769	if (ecb_expect_false (dentoffs == dentalloc))
1770	{
1771	dentalloc *= 2;
1772	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1773
1774	if (!dents)
1775	break;
1776	}
1777
1778	ent = dents + dentoffs;
1779
1780	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1781	ent->namelen = len - 1;
1782	ent->inode = D_INO (entp);
1783
1784	inode_bits |= ent->inode;
1785
1786	switch (D_TYPE (entp))
1787	{
1788	default:
1789	ent->type = EIO_DT_UNKNOWN;
1790	flags |= EIO_READDIR_FOUND_UNKNOWN;
1791	break;
1792
1793	#ifdef DT_FIFO
1794	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1795	#endif
1796	#ifdef DT_CHR
1797	case DT_CHR: ent->type = EIO_DT_CHR; break;
1798	#endif
1799	#ifdef DT_MPC
1800	case DT_MPC: ent->type = EIO_DT_MPC; break;
1801	#endif
1802	#ifdef DT_DIR
1803	case DT_DIR: ent->type = EIO_DT_DIR; break;
1804	#endif
1805	#ifdef DT_NAM
1806	case DT_NAM: ent->type = EIO_DT_NAM; break;
1807	#endif
1808	#ifdef DT_BLK
1809	case DT_BLK: ent->type = EIO_DT_BLK; break;
1810	#endif
1811	#ifdef DT_MPB
1812	case DT_MPB: ent->type = EIO_DT_MPB; break;
1813	#endif
1814	#ifdef DT_REG
1815	case DT_REG: ent->type = EIO_DT_REG; break;
1816	#endif
1817	#ifdef DT_NWK
1818	case DT_NWK: ent->type = EIO_DT_NWK; break;
1819	#endif
1820	#ifdef DT_CMP
1821	case DT_CMP: ent->type = EIO_DT_CMP; break;
1822	#endif
1823	#ifdef DT_LNK
1824	case DT_LNK: ent->type = EIO_DT_LNK; break;
1825	#endif
1826	#ifdef DT_SOCK
1827	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1828	#endif
1829	#ifdef DT_DOOR
1830	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1831	#endif
1832	#ifdef DT_WHT
1833	case DT_WHT: ent->type = EIO_DT_WHT; break;
1834	#endif
1835	}
1836
1837	ent->score = 7;
1838
1839	if (flags & EIO_READDIR_DIRS_FIRST)
1840	{
1841	if (ent->type == EIO_DT_UNKNOWN)
1842	{
1843	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1844	ent->score = 1;
1845	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1846	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1847	}
1848	else if (ent->type == EIO_DT_DIR)
1849	ent->score = 0;
1850	}
1851	}
1852
1853	namesoffs += len;	1977	namesoffs += len;
1854	++dentoffs;	1978	++dentoffs;
1855	}	1979	}
1856		1980
1857	if (EIO_CANCELLED (req))	1981	if (EIO_CANCELLED (req))
1858	{	1982	{
1859	errno = ECANCELED;	1983	errno = ECANCELED;
1860	break;	1984	break;
1861	}	1985	}
1862		1986
1863	#ifdef _WIN32	1987	#ifdef _WIN32
1864	if (!FindNextFile (dirp, &entp))	1988	if (!FindNextFile (dirp, &entp))
1865	{	1989	{
1866	FindClose (dirp);	1990	FindClose (dirp);
1867	dirp = 0;	1991	dirp = 0;
1868	}	1992	}
1869	#endif	1993	#endif
1870	}	1994	}
1871	}	1995	}
		1996
		1997	/*****************************************************************************/
		1998	/* working directory stuff */
		1999	/* various deficiencies in the posix 2008 api force us to */
		2000	/* keep the absolute path in string form at all times */
		2001	/* fuck yeah. */
		2002
		2003	#if !HAVE_AT
		2004
		2005	/* a bit like realpath, but usually faster because it doesn'T have to return */
		2006	/* an absolute or canonical path */
		2007	static const char *
		2008	wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		2009	{
		2010	if (!wd || *path == '/')
		2011	return path;
		2012
		2013	if (path [0] == '.' && !path [1])
		2014	return wd->str;
		2015
		2016	{
		2017	int l1 = wd->len;
		2018	int l2 = strlen (path);
		2019
		2020	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
		2021
		2022	memcpy (res, wd->str, l1);
		2023	res [l1] = '/';
		2024	memcpy (res + l1 + 1, path, l2 + 1);
		2025
		2026	return res;
		2027	}
		2028	}
		2029
		2030	#endif
		2031
		2032	static eio_wd
		2033	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		2034	{
		2035	int fd;
		2036	eio_wd res;
		2037	int len = eio__realpath (tmpbuf, wd, path);
		2038
		2039	if (len < 0)
		2040	return EIO_INVALID_WD;
		2041
		2042	#if HAVE_AT
		2043	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		2044
		2045	if (fd < 0)
		2046	return EIO_INVALID_WD;
		2047	#endif
		2048
		2049	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		2050
		2051	#if HAVE_AT
		2052	res->fd = fd;
		2053	#endif
		2054
		2055	res->len = len;
		2056	memcpy (res->str, tmpbuf->ptr, len);
		2057	res->str [len] = 0;
		2058
		2059	return res;
		2060	}
		2061
		2062	eio_wd
		2063	eio_wd_open_sync (eio_wd wd, const char *path)
		2064	{
		2065	struct tmpbuf tmpbuf = { 0 };
		2066	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		2067	free (tmpbuf.ptr);
		2068
		2069	return wd;
		2070	}
		2071
		2072	void
		2073	eio_wd_close_sync (eio_wd wd)
		2074	{
		2075	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		2076	{
		2077	#if HAVE_AT
		2078	close (wd->fd);
		2079	#endif
		2080	free (wd);
		2081	}
		2082	}
		2083
		2084	#if HAVE_AT
		2085
		2086	/* they forgot these */
		2087
		2088	static int
		2089	eio__truncateat (int dirfd, const char *path, off_t length)
		2090	{
		2091	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		2092	int res;
		2093
		2094	if (fd < 0)
		2095	return fd;
		2096
		2097	res = ftruncate (fd, length);
		2098	close (fd);
		2099	return res;
		2100	}
		2101
		2102	static int
		2103	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		2104	{
		2105	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		2106	int res;
		2107
		2108	if (fd < 0)
		2109	return fd;
		2110
		2111	res = fstatvfs (fd, buf);
		2112	close (fd);
		2113	return res;
		2114
		2115	}
		2116
		2117	#endif
1872		2118
1873	/*****************************************************************************/	2119	/*****************************************************************************/
1874		2120
1875	#define ALLOC(len) \	2121	#define ALLOC(len) \
1876	if (!req->ptr2) \	2122	if (!req->ptr2) \
…		…
1885	req->result = -1; \	2131	req->result = -1; \
1886	break; \	2132	break; \
1887	} \	2133	} \
1888	}	2134	}
1889		2135
		2136	static void ecb_noinline ecb_cold
		2137	etp_proc_init (void)
		2138	{
		2139	#if HAVE_PRCTL_SET_NAME
		2140	/* provide a more sensible "thread name" */
		2141	char name[16 + 1];
		2142	const int namelen = sizeof (name) - 1;
		2143	int len;
		2144
		2145	prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);
		2146	name [namelen] = 0;
		2147	len = strlen (name);
		2148	strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
		2149	prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
		2150	#endif
		2151	}
		2152
1890	X_THREAD_PROC (etp_proc)	2153	X_THREAD_PROC (etp_proc)
1891	{	2154	{
1892	ETP_REQ *req;	2155	ETP_REQ *req;
1893	struct timespec ts;	2156	struct timespec ts;
1894	etp_worker *self = (etp_worker *)thr_arg;	2157	etp_worker *self = (etp_worker *)thr_arg;
1895		2158
		2159	etp_proc_init ();
		2160
1896	/* try to distribute timeouts somewhat evenly */	2161	/* try to distribute timeouts somewhat evenly */
1897	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	2162	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1898		2163
1899	for (;;)	2164	for (;;)
1900	{	2165	{
…		…
1902		2167
1903	X_LOCK (reqlock);	2168	X_LOCK (reqlock);
1904		2169
1905	for (;;)	2170	for (;;)
1906	{	2171	{
1907	self->req = req = reqq_shift (&req_queue);	2172	req = reqq_shift (&req_queue);
1908		2173
1909	if (req)	2174	if (req)
1910	break;	2175	break;
1911		2176
1912	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */	2177	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
…		…
1950	++npending;	2215	++npending;
1951		2216
1952	if (!reqq_push (&res_queue, req) && want_poll_cb)	2217	if (!reqq_push (&res_queue, req) && want_poll_cb)
1953	want_poll_cb ();	2218	want_poll_cb ();
1954		2219
1955	self->req = 0;
1956	etp_worker_clear (self);	2220	etp_worker_clear (self);
1957		2221
1958	X_UNLOCK (reslock);	2222	X_UNLOCK (reslock);
1959	}	2223	}
1960		2224
1961	quit:	2225	quit:
		2226	free (req);
		2227
1962	X_LOCK (wrklock);	2228	X_LOCK (wrklock);
1963	etp_worker_free (self);	2229	etp_worker_free (self);
1964	X_UNLOCK (wrklock);	2230	X_UNLOCK (wrklock);
1965		2231
1966	return 0;	2232	return 0;
…		…
1969	/*****************************************************************************/	2235	/*****************************************************************************/
1970		2236
1971	int ecb_cold	2237	int ecb_cold
1972	eio_init (void (*want_poll)(void), void (*done_poll)(void))	2238	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1973	{	2239	{
1974	#if !HAVE_PREADWRITE
1975	X_MUTEX_CREATE (preadwritelock);
1976	#endif
1977
1978	return etp_init (want_poll, done_poll);	2240	return etp_init (want_poll, done_poll);
1979	}	2241	}
1980		2242
1981	ecb_inline void	2243	ecb_inline void
1982	eio_api_destroy (eio_req *req)	2244	eio_api_destroy (eio_req *req)
1983	{	2245	{
1984	free (req);	2246	free (req);
1985	}	2247	}
1986		2248
1987	#define REQ(rtype) \	2249	#define REQ(rtype) \
1988	eio_req *req; \	2250	eio_req *req; \
1989	\	2251	\
1990	req = (eio_req *)calloc (1, sizeof *req); \	2252	req = (eio_req *)calloc (1, sizeof *req); \
1991	if (!req) \	2253	if (!req) \
1992	return 0; \	2254	return 0; \
…		…
2006	{ \	2268	{ \
2007	eio_api_destroy (req); \	2269	eio_api_destroy (req); \
2008	return 0; \	2270	return 0; \
2009	}	2271	}
2010		2272
		2273	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		2274
2011	static void	2275	static void
2012	eio_execute (etp_worker *self, eio_req *req)	2276	eio_execute (etp_worker *self, eio_req *req)
2013	{	2277	{
		2278	#if HAVE_AT
		2279	int dirfd;
		2280	#else
		2281	const char *path;
		2282	#endif
		2283
2014	if (ecb_expect_false (EIO_CANCELLED (req)))	2284	if (ecb_expect_false (EIO_CANCELLED (req)))
2015	{	2285	{
2016	req->result = -1;	2286	req->result = -1;
2017	req->errorno = ECANCELED;	2287	req->errorno = ECANCELED;
2018	return;	2288	return;
2019	}	2289	}
2020		2290
		2291	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		2292	{
		2293	req->result = -1;
		2294	req->errorno = ENOENT;
		2295	return;
		2296	}
		2297
		2298	if (req->type >= EIO_OPEN)
		2299	{
		2300	#if HAVE_AT
		2301	dirfd = WD2FD (req->wd);
		2302	#else
		2303	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		2304	#endif
		2305	}
		2306
2021	switch (req->type)	2307	switch (req->type)
2022	{	2308	{
		2309	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		2310	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		2311	break;
		2312	case EIO_WD_CLOSE: req->result = 0;
		2313	eio_wd_close_sync (req->wd); break;
		2314
		2315	case EIO_SEEK: eio__lseek (req); break;
2023	case EIO_READ: ALLOC (req->size);	2316	case EIO_READ: ALLOC (req->size);
2024	req->result = req->offs >= 0	2317	req->result = req->offs >= 0
2025	? pread (req->int1, req->ptr2, req->size, req->offs)	2318	? pread (req->int1, req->ptr2, req->size, req->offs)
2026	: read (req->int1, req->ptr2, req->size); break;	2319	: read (req->int1, req->ptr2, req->size); break;
2027	case EIO_WRITE: req->result = req->offs >= 0	2320	case EIO_WRITE: req->result = req->offs >= 0
…		…
2029	: write (req->int1, req->ptr2, req->size); break;	2322	: write (req->int1, req->ptr2, req->size); break;
2030		2323
2031	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2324	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2032	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	2325	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2033		2326
		2327	#if HAVE_AT
		2328
2034	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2329	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2035	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2330	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2036	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2331	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2332	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		2333	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		2334	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		2335	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		2336	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		2337
		2338	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		2339	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		2340	req->result = req->wd && SINGLEDOT (req->ptr1)
		2341	? rmdir (req->wd->str)
		2342	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		2343	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		2344	case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
		2345	req->result = req->wd && SINGLEDOT (req->ptr1)
		2346	? rename (req->wd->str, req->ptr2)
		2347	: renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		2348	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		2349	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		2350	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		2351	case EIO_READLINK: ALLOC (PATH_MAX);
		2352	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
		2353	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2354	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2355	case EIO_UTIME:
		2356	case EIO_FUTIME:
		2357	{
		2358	struct timespec ts[2];
		2359	struct timespec *times;
		2360
		2361	if (req->nv1 != -1. || req->nv2 != -1.)
		2362	{
		2363	ts[0].tv_sec = req->nv1;
		2364	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		2365	ts[1].tv_sec = req->nv2;
		2366	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		2367
		2368	times = ts;
		2369	}
		2370	else
		2371	times = 0;
		2372
		2373	req->result = req->type == EIO_FUTIME
		2374	? futimens (req->int1, times)
		2375	: utimensat (dirfd, req->ptr1, times, 0);
		2376	}
		2377	break;
		2378
		2379	#else
		2380
		2381	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2382	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2383	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2037	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2384	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2385	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		2386	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		2387	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		2388	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		2389
		2390	case EIO_UNLINK: req->result = unlink (path ); break;
		2391	case EIO_RMDIR: req->result = rmdir (path ); break;
		2392	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		2393	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		2394	case EIO_LINK: req->result = link (path , req->ptr2); break;
		2395	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		2396	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		2397	case EIO_READLINK: ALLOC (PATH_MAX);
		2398	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		2399	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2400	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2401
		2402	case EIO_UTIME:
		2403	case EIO_FUTIME:
		2404	{
		2405	struct timeval tv[2];
		2406	struct timeval *times;
		2407
		2408	if (req->nv1 != -1. || req->nv2 != -1.)
		2409	{
		2410	tv[0].tv_sec = req->nv1;
		2411	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		2412	tv[1].tv_sec = req->nv2;
		2413	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		2414
		2415	times = tv;
		2416	}
		2417	else
		2418	times = 0;
		2419
		2420	req->result = req->type == EIO_FUTIME
		2421	? futimes (req->int1, times)
		2422	: utimes (req->ptr1, times);
		2423	}
		2424	break;
		2425
		2426	#endif
		2427
		2428	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		2429	{
		2430	ALLOC (req->result);
		2431	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		2432	}
		2433	break;
		2434
2038	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2435	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2039	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2436	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2040		2437
2041	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2042	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2043	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	2438	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2044	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	2439	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2045		2440
2046	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2047	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2441	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2048	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2049	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2442	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2050	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2051	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2443	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2052		2444
2053	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2054	case EIO_CLOSE: req->result = close (req->int1); break;	2445	case EIO_CLOSE: req->result = close (req->int1); break;
2055	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2446	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2056	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2057	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2058	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2059	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2060	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2061	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2062	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2063
2064	case EIO_REALPATH: eio__realpath (req, self); break;
2065
2066	case EIO_READLINK: ALLOC (PATH_MAX);
2067	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2068
2069	case EIO_SYNC: req->result = 0; sync (); break;	2447	case EIO_SYNC: req->result = 0; sync (); break;
2070	case EIO_FSYNC: req->result = fsync (req->int1); break;	2448	case EIO_FSYNC: req->result = fsync (req->int1); break;
2071	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2449	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2450	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2451	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2072	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2452	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2073	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	2453	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2074	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	2454	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2075	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	2455	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2076	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2077	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	2456	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2078		2457
2079	case EIO_READDIR: eio__scandir (req, self); break;	2458	case EIO_READDIR: eio__scandir (req, self); break;
2080		2459
2081	case EIO_BUSY:	2460	case EIO_BUSY:
…		…
2091	req->result = select (0, 0, 0, 0, &tv);	2470	req->result = select (0, 0, 0, 0, &tv);
2092	}	2471	}
2093	#endif	2472	#endif
2094	break;	2473	break;
2095		2474
2096	case EIO_UTIME:
2097	case EIO_FUTIME:
2098	{
2099	struct timeval tv[2];
2100	struct timeval *times;
2101
2102	if (req->nv1 != -1. || req->nv2 != -1.)
2103	{
2104	tv[0].tv_sec = req->nv1;
2105	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2106	tv[1].tv_sec = req->nv2;
2107	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2108
2109	times = tv;
2110	}
2111	else
2112	times = 0;
2113
2114	req->result = req->type == EIO_FUTIME
2115	? futimes (req->int1, times)
2116	: utimes (req->ptr1, times);
2117	}
2118	break;
2119
2120	case EIO_GROUP:	2475	case EIO_GROUP:
2121	abort (); /* handled in eio_request */	2476	abort (); /* handled in eio_request */
2122		2477
2123	case EIO_NOP:	2478	case EIO_NOP:
2124	req->result = 0;	2479	req->result = 0;
…		…
2127	case EIO_CUSTOM:	2482	case EIO_CUSTOM:
2128	req->feed (req);	2483	req->feed (req);
2129	break;	2484	break;
2130		2485
2131	default:	2486	default:
2132	errno = ENOSYS;
2133	req->result = -1;	2487	req->result = EIO_ENOSYS ();
2134	break;	2488	break;
2135	}	2489	}
2136		2490
2137	req->errorno = errno;	2491	req->errorno = errno;
2138	}	2492	}
2139		2493
2140	#ifndef EIO_NO_WRAPPERS	2494	#ifndef EIO_NO_WRAPPERS
2141		2495
		2496	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		2497	{
		2498	REQ (EIO_WD_OPEN); PATH; SEND;
		2499	}
		2500
		2501	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2502	{
		2503	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2504	}
		2505
2142	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2506	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2143	{	2507	{
2144	REQ (EIO_NOP); SEND;	2508	REQ (EIO_NOP); SEND;
2145	}	2509	}
2146		2510
…		…
2162	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2526	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2163	{	2527	{
2164	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2528	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2165	}	2529	}
2166		2530
		2531	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2532	{
		2533	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2534	}
		2535
		2536	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2537	{
		2538	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2539	}
		2540
		2541	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2542	{
		2543	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2544	}
		2545
2167	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2546	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2168	{	2547	{
2169	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2548	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2170	}	2549	}
2171		2550
…		…
2177	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2556	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2178	{	2557	{
2179	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2558	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2180	}	2559	}
2181		2560
2182	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2183	{
2184	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2185	}
2186
2187	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)	2561	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2188	{	2562	{
2189	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;	2563	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2190	}	2564	}
2191		2565
2192	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2193	{
2194	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2195	}
2196
2197	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2566	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2198	{	2567	{
2199	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2568	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2200	}	2569	}
2201		2570
2202	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2571	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2203	{	2572	{
2204	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2573	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
		2574	}
		2575
		2576	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2577	{
		2578	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
2205	}	2579	}
2206		2580
2207	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2581	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2208	{	2582	{
2209	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2583	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;

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