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Comparing libeio/eio.c (file contents):
Revision 1.86 by root, Thu Jul 14 18:30:10 2011 UTC vs.
Revision 1.121 by root, Sat Jun 2 20:13:26 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	*
…		…
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>
…		…
58	#include <sys/stat.h>	58	#include <sys/stat.h>
59	#include <limits.h>	59	#include <limits.h>
60	#include <fcntl.h>	60	#include <fcntl.h>
61	#include <assert.h>	61	#include <assert.h>
62		62
63	#include <sys/statvfs.h>
64	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */	63	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
65	/* intptr_t only comes from stdint.h, says idiot openbsd coder */	64	/* intptr_t only comes from stdint.h, says idiot openbsd coder */
66	#if HAVE_STDINT_H	65	#if HAVE_STDINT_H
67	# include <stdint.h>	66	# include <stdint.h>
68	#endif	67	#endif
69		68
70	#ifndef ECANCELED	69	#ifndef ECANCELED
71	# define ECANCELED EDOM	70	# define ECANCELED EDOM
72	#endif	71	#endif
		72	#ifndef ELOOP
		73	# define ELOOP EDOM
		74	#endif
		75
		76	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		77	# define ENOTSOCK WSAENOTSOCK
		78	#endif
73		79
74	static void eio_destroy (eio_req *req);	80	static void eio_destroy (eio_req *req);
75		81
76	#ifndef EIO_FINISH	82	#ifndef EIO_FINISH
77	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	83	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
…		…
96		102
97	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)	103	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
98		104
99	#ifdef _WIN32	105	#ifdef _WIN32
100		106
		107	#undef PAGESIZE
101	#define PAGESIZE 4096 /* GetSystemInfo? */	108	#define PAGESIZE 4096 /* GetSystemInfo? */
102		109
		110	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		111
		112	#ifdef EIO_STRUCT_STATI64
		113	/* look at perl's non-sloppy stat */
103	#define stat(path,buf) _stati64 (path,buf)	114	#define stat(path,buf) _stati64 (path,buf)
		115	#define fstat(fd,buf) _fstati64 (fd,buf)
		116	#endif
104	#define lstat(path,buf) stat (path,buf)	117	#define lstat(path,buf) stat (path,buf)
105	#define fstat(fd,buf) _fstati64 (path,buf)
106	#define fsync(fd) (FlushFileBuffers (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))
107	#define mkdir(path,mode) _mkdir (path)	119	#define mkdir(path,mode) _mkdir (path)
108	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))	120	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
109		121
		122	#define chmod(path,mode) _chmod (path, mode)
		123	#define dup(fd) _dup (fd)
		124	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		125
		126	#define fchmod(fd,mode) EIO_ENOSYS ()
110	#define chown(path,uid,gid) EIO_ENOSYS ()	127	#define chown(path,uid,gid) EIO_ENOSYS ()
111	#define fchown(fd,uid,gid) EIO_ENOSYS ()	128	#define fchown(fd,uid,gid) EIO_ENOSYS ()
112	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	129	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
113	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	130	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
114	#define mknod(path,mode,dev) EIO_ENOSYS ()	131	#define mknod(path,mode,dev) EIO_ENOSYS ()
115	#define sync() EIO_ENOSYS ()	132	#define sync() EIO_ENOSYS ()
		133	#define readlink(path,buf,s) EIO_ENOSYS ()
		134	#define statvfs(path,buf) EIO_ENOSYS ()
		135	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		136
		137	/* rename() uses MoveFile, which fails to overwrite */
		138	#define rename(old,neu) eio__rename (old, neu)
		139
		140	static int
		141	eio__rename (const char *old, const char *neu)
		142	{
		143	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		144	return 0;
		145
		146	/* should steal _dosmaperr */
		147	switch (GetLastError ())
		148	{
		149	case ERROR_FILE_NOT_FOUND:
		150	case ERROR_PATH_NOT_FOUND:
		151	case ERROR_INVALID_DRIVE:
		152	case ERROR_NO_MORE_FILES:
		153	case ERROR_BAD_NETPATH:
		154	case ERROR_BAD_NET_NAME:
		155	case ERROR_BAD_PATHNAME:
		156	case ERROR_FILENAME_EXCED_RANGE:
		157	errno = ENOENT;
		158	break;
		159
		160	default:
		161	errno = EACCES;
		162	break;
		163	}
		164
		165	return -1;
		166	}
116		167
117	/* we could even stat and see if it exists */	168	/* we could even stat and see if it exists */
118	static int	169	static int
119	symlink (const char *old, const char *neu)	170	symlink (const char *old, const char *neu)
120	{	171	{
		172	#if WINVER >= 0x0600
121	if (CreateSymbolicLink (neu, old, 1))	173	if (CreateSymbolicLink (neu, old, 1))
122	return 0;	174	return 0;
123		175
124	if (CreateSymbolicLink (neu, old, 0))	176	if (CreateSymbolicLink (neu, old, 0))
125	return 0;	177	return 0;
		178	#endif
126		179
127	return EIO_ERRNO (ENOENT, -1);	180	return EIO_ERRNO (ENOENT, -1);
128	}	181	}
		182
		183	/* POSIX API only */
		184	#define CreateHardLink(neu,old,flags) 0
		185	#define CreateSymbolicLink(neu,old,flags) 0
		186
		187	struct statvfs
		188	{
		189	int dummy;
		190	};
		191
		192	#define DT_DIR EIO_DT_DIR
		193	#define DT_REG EIO_DT_REG
		194	#define D_NAME(entp) entp.cFileName
		195	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
129		196
130	#else	197	#else
131		198
132	#include <sys/time.h>	199	#include <sys/time.h>
133	#include <sys/select.h>	200	#include <sys/select.h>
134	#include <sys/statvfs.h>	201	#include <sys/statvfs.h>
135	#include <unistd.h>	202	#include <unistd.h>
136	#include <utime.h>
137	#include <signal.h>	203	#include <signal.h>
138	#include <dirent.h>	204	#include <dirent.h>
139		205
140	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	206	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
141	#include <sys/mman.h>	207	#include <sys/mman.h>
142	#endif	208	#endif
143		209
		210	#define D_NAME(entp) entp->d_name
		211
144	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	212	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
145	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	213	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
146	#define _DIRENT_HAVE_D_TYPE /* sigh */	214	#define _DIRENT_HAVE_D_TYPE /* sigh */
147	#define D_INO(de) (de)->d_fileno	215	#define D_INO(de) (de)->d_fileno
148	#define D_NAMLEN(de) (de)->d_namlen	216	#define D_NAMLEN(de) (de)->d_namlen
149	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	217	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
150	#define D_INO(de) (de)->d_ino	218	#define D_INO(de) (de)->d_ino
…		…
161		229
162	#ifndef EIO_STRUCT_DIRENT	230	#ifndef EIO_STRUCT_DIRENT
163	#define EIO_STRUCT_DIRENT struct dirent	231	#define EIO_STRUCT_DIRENT struct dirent
164	#endif	232	#endif
165		233
		234	#endif
		235
		236	#if HAVE_UTIMES
		237	# include <utime.h>
		238	#endif
		239
		240	#if HAVE_SYS_SYSCALL_H
		241	# include <sys/syscall.h>
		242	#endif
		243
		244	#if HAVE_SYS_PRCTL_H
		245	# include <sys/prctl.h>
166	#endif	246	#endif
167		247
168	#if HAVE_SENDFILE	248	#if HAVE_SENDFILE
169	# if __linux	249	# if __linux
170	# include <sys/sendfile.h>	250	# include <sys/sendfile.h>
…		…
185	#endif	265	#endif
186	#ifndef D_INO	266	#ifndef D_INO
187	# define D_INO(de) 0	267	# define D_INO(de) 0
188	#endif	268	#endif
189	#ifndef D_NAMLEN	269	#ifndef D_NAMLEN
190	# define D_NAMLEN(de) strlen ((de)->d_name)	270	# define D_NAMLEN(entp) strlen (D_NAME (entp))
191	#endif	271	#endif
192		272
193	/* used for struct dirent, AIX doesn't provide it */	273	/* used for struct dirent, AIX doesn't provide it */
194	#ifndef NAME_MAX	274	#ifndef NAME_MAX
195	# define NAME_MAX 4096	275	# define NAME_MAX 4096
…		…
202		282
203	/* buffer size for various temporary buffers */	283	/* buffer size for various temporary buffers */
204	#define EIO_BUFSIZE 65536	284	#define EIO_BUFSIZE 65536
205		285
206	#define dBUF \	286	#define dBUF \
207	char *eio_buf; \
208	ETP_WORKER_LOCK (self); \
209	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	287	char *eio_buf = malloc (EIO_BUFSIZE); \
210	ETP_WORKER_UNLOCK (self); \
211	errno = ENOMEM; \	288	errno = ENOMEM; \
212	if (!eio_buf) \	289	if (!eio_buf) \
213	return -1;	290	return -1
		291
		292	#define FUBd \
		293	free (eio_buf)
214		294
215	#define EIO_TICKS ((1000000 + 1023) >> 10)	295	#define EIO_TICKS ((1000000 + 1023) >> 10)
		296
		297	/*****************************************************************************/
		298
		299	struct tmpbuf
		300	{
		301	void *ptr;
		302	int len;
		303	};
		304
		305	static void *
		306	tmpbuf_get (struct tmpbuf *buf, int len)
		307	{
		308	if (buf->len < len)
		309	{
		310	free (buf->ptr);
		311	buf->ptr = malloc (buf->len = len);
		312	}
		313
		314	return buf->ptr;
		315	}
		316
		317	struct tmpbuf;
		318
		319	#if _POSIX_VERSION >= 200809L
		320	#define HAVE_AT 1
		321	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		322	#ifndef O_SEARCH
		323	#define O_SEARCH O_RDONLY
		324	#endif
		325	#else
		326	#define HAVE_AT 0
		327	static const char *wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path);
		328	#endif
		329
		330	struct eio_pwd
		331	{
		332	#if HAVE_AT
		333	int fd;
		334	#endif
		335	int len;
		336	char str[1]; /* actually, a 0-terminated canonical path */
		337	};
		338
		339	/*****************************************************************************/
216		340
217	#define ETP_PRI_MIN EIO_PRI_MIN	341	#define ETP_PRI_MIN EIO_PRI_MIN
218	#define ETP_PRI_MAX EIO_PRI_MAX	342	#define ETP_PRI_MAX EIO_PRI_MAX
219		343
220	struct etp_worker;	344	struct etp_worker;
…		…
224	static int eio_finish (eio_req *req);	348	static int eio_finish (eio_req *req);
225	#define ETP_FINISH(req) eio_finish (req)	349	#define ETP_FINISH(req) eio_finish (req)
226	static void eio_execute (struct etp_worker *self, eio_req *req);	350	static void eio_execute (struct etp_worker *self, eio_req *req);
227	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	351	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
228		352
229	#define ETP_WORKER_CLEAR(req) \
230	if (wrk->dbuf) \
231	{ \
232	free (wrk->dbuf); \
233	wrk->dbuf = 0; \
234	} \
235	\
236	if (wrk->dirp) \
237	{ \
238	closedir (wrk->dirp); \
239	wrk->dirp = 0; \
240	}
241
242	#define ETP_WORKER_COMMON \
243	void *dbuf; \
244	DIR *dirp;
245
246	/*****************************************************************************/	353	/*****************************************************************************/
247		354
248	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	355	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
249		356
250	/* calculate time difference in ~1/EIO_TICKS of a second */	357	/* calculate time difference in ~1/EIO_TICKS of a second */
…		…
261	static void (*done_poll_cb) (void);	368	static void (*done_poll_cb) (void);
262		369
263	static unsigned int max_poll_time; /* reslock */	370	static unsigned int max_poll_time; /* reslock */
264	static unsigned int max_poll_reqs; /* reslock */	371	static unsigned int max_poll_reqs; /* reslock */
265		372
266	static volatile unsigned int nreqs; /* reqlock */	373	static unsigned int nreqs; /* reqlock */
267	static volatile unsigned int nready; /* reqlock */	374	static unsigned int nready; /* reqlock */
268	static volatile unsigned int npending; /* reqlock */	375	static unsigned int npending; /* reqlock */
269	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */	376	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
270	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */	377	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
271		378
272	static xmutex_t wrklock;	379	static xmutex_t wrklock;
273	static xmutex_t reslock;	380	static xmutex_t reslock;
274	static xmutex_t reqlock;	381	static xmutex_t reqlock;
275	static xcond_t reqwait;	382	static xcond_t reqwait;
276		383
277	#if !HAVE_PREADWRITE
278	/*
279	* make our pread/pwrite emulation safe against themselves, but not against
280	* normal read/write by using a mutex. slows down execution a lot,
281	* but that's your problem, not mine.
282	*/
283	static xmutex_t preadwritelock = X_MUTEX_INIT;
284	#endif
285
286	typedef struct etp_worker	384	typedef struct etp_worker
287	{	385	{
		386	struct tmpbuf tmpbuf;
		387
288	/* locked by wrklock */	388	/* locked by wrklock */
289	struct etp_worker *prev, *next;	389	struct etp_worker *prev, *next;
290		390
291	xthread_t tid;	391	xthread_t tid;
292		392
293	/* locked by reslock, reqlock or wrklock */	393	#ifdef ETP_WORKER_COMMON
294	ETP_REQ *req; /* currently processed request */
295
296	ETP_WORKER_COMMON	394	ETP_WORKER_COMMON
		395	#endif
297	} etp_worker;	396	} etp_worker;
298		397
299	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	398	static etp_worker wrk_first; /* NOT etp */
300		399
301	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	400	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
302	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	401	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
303		402
304	/* worker threads management */	403	/* worker threads management */
305		404
306	static void ecb_cold	405	static void
307	etp_worker_clear (etp_worker *wrk)	406	etp_worker_clear (etp_worker *wrk)
308	{	407	{
309	ETP_WORKER_CLEAR (wrk);
310	}	408	}
311		409
312	static void ecb_cold	410	static void ecb_cold
313	etp_worker_free (etp_worker *wrk)	411	etp_worker_free (etp_worker *wrk)
314	{	412	{
		413	free (wrk->tmpbuf.ptr);
		414
315	wrk->next->prev = wrk->prev;	415	wrk->next->prev = wrk->prev;
316	wrk->prev->next = wrk->next;	416	wrk->prev->next = wrk->next;
317		417
318	free (wrk);	418	free (wrk);
319	}	419	}
…		…
375	} etp_reqq;	475	} etp_reqq;
376		476
377	static etp_reqq req_queue;	477	static etp_reqq req_queue;
378	static etp_reqq res_queue;	478	static etp_reqq res_queue;
379		479
		480	static void ecb_noinline ecb_cold
		481	reqq_init (etp_reqq *q)
		482	{
		483	int pri;
		484
		485	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		486	q->qs[pri] = q->qe[pri] = 0;
		487
		488	q->size = 0;
		489	}
		490
380	static int ecb_noinline	491	static int ecb_noinline
381	reqq_push (etp_reqq *q, ETP_REQ *req)	492	reqq_push (etp_reqq *q, ETP_REQ *req)
382	{	493	{
383	int pri = req->pri;	494	int pri = req->pri;
384	req->next = 0;	495	req->next = 0;
…		…
418	}	529	}
419		530
420	abort ();	531	abort ();
421	}	532	}
422		533
423	static void ecb_cold	534	static int ecb_cold
424	etp_thread_init (void)	535	etp_init (void (*want_poll)(void), void (*done_poll)(void))
425	{	536	{
426	#if !HAVE_PREADWRITE
427	X_MUTEX_CREATE (preadwritelock);
428	#endif
429	X_MUTEX_CREATE (wrklock);	537	X_MUTEX_CREATE (wrklock);
430	X_MUTEX_CREATE (reslock);	538	X_MUTEX_CREATE (reslock);
431	X_MUTEX_CREATE (reqlock);	539	X_MUTEX_CREATE (reqlock);
432	X_COND_CREATE (reqwait);	540	X_COND_CREATE (reqwait);
433	}
434		541
435	static void ecb_cold	542	reqq_init (&req_queue);
436	etp_atfork_prepare (void)	543	reqq_init (&res_queue);
437	{
438	}
439		544
440	static void ecb_cold	545	wrk_first.next =
441	etp_atfork_parent (void)	546	wrk_first.prev = &wrk_first;
442	{
443	}
444
445	static void ecb_cold
446	etp_atfork_child (void)
447	{
448	ETP_REQ *prv;
449
450	while ((prv = reqq_shift (&req_queue)))
451	ETP_DESTROY (prv);
452
453	while ((prv = reqq_shift (&res_queue)))
454	ETP_DESTROY (prv);
455
456	while (wrk_first.next != &wrk_first)
457	{
458	etp_worker *wrk = wrk_first.next;
459
460	if (wrk->req)
461	ETP_DESTROY (wrk->req);
462
463	etp_worker_clear (wrk);
464	etp_worker_free (wrk);
465	}
466		547
467	started = 0;	548	started = 0;
468	idle = 0;	549	idle = 0;
469	nreqs = 0;	550	nreqs = 0;
470	nready = 0;	551	nready = 0;
471	npending = 0;	552	npending = 0;
472
473	etp_thread_init ();
474	}
475
476	static void ecb_cold
477	etp_once_init (void)
478	{
479	etp_thread_init ();
480	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
481	}
482
483	static int ecb_cold
484	etp_init (void (*want_poll)(void), void (*done_poll)(void))
485	{
486	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
487
488	pthread_once (&doinit, etp_once_init);
489		553
490	want_poll_cb = want_poll;	554	want_poll_cb = want_poll;
491	done_poll_cb = done_poll;	555	done_poll_cb = done_poll;
492		556
493	return 0;	557	return 0;
…		…
533	}	597	}
534		598
535	static void ecb_cold	599	static void ecb_cold
536	etp_end_thread (void)	600	etp_end_thread (void)
537	{	601	{
538	eio_req *req = calloc (1, sizeof (eio_req));	602	eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */
539		603
540	req->type = -1;	604	req->type = -1;
541	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	605	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
542		606
543	X_LOCK (reqlock);	607	X_LOCK (reqlock);
…		…
870	}	934	}
871		935
872	/*****************************************************************************/	936	/*****************************************************************************/
873	/* work around various missing functions */	937	/* work around various missing functions */
874		938
875	#if !HAVE_PREADWRITE
876	# undef pread
877	# undef pwrite
878	# define pread eio__pread
879	# define pwrite eio__pwrite
880
881	static ssize_t
882	eio__pread (int fd, void *buf, size_t count, off_t offset)
883	{
884	ssize_t res;
885	off_t ooffset;
886
887	X_LOCK (preadwritelock);
888	ooffset = lseek (fd, 0, SEEK_CUR);
889	lseek (fd, offset, SEEK_SET);
890	res = read (fd, buf, count);
891	lseek (fd, ooffset, SEEK_SET);
892	X_UNLOCK (preadwritelock);
893
894	return res;
895	}
896
897	static ssize_t
898	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
899	{
900	ssize_t res;
901	off_t ooffset;
902
903	X_LOCK (preadwritelock);
904	ooffset = lseek (fd, 0, SEEK_CUR);
905	lseek (fd, offset, SEEK_SET);
906	res = write (fd, buf, count);
907	lseek (fd, ooffset, SEEK_SET);
908	X_UNLOCK (preadwritelock);
909
910	return res;
911	}
912	#endif
913
914	#ifndef HAVE_UTIMES	939	#ifndef HAVE_UTIMES
915		940
916	# undef utimes	941	# undef utimes
917	# define utimes(path,times) eio__utimes (path, times)	942	# define utimes(path,times) eio__utimes (path, times)
918		943
…		…
950		975
951	#if !HAVE_FDATASYNC	976	#if !HAVE_FDATASYNC
952	# undef fdatasync	977	# undef fdatasync
953	# define fdatasync(fd) fsync (fd)	978	# define fdatasync(fd) fsync (fd)
954	#endif	979	#endif
		980
		981	static int
		982	eio__syncfs (int fd)
		983	{
		984	int res;
		985
		986	#if HAVE_SYS_SYNCFS
		987	res = (int)syscall (__NR_syncfs, (int)(fd));
		988	#else
		989	res = EIO_ENOSYS ();
		990	#endif
		991
		992	if (res < 0 && errno == ENOSYS && fd >= 0)
		993	sync ();
		994
		995	return res;
		996	}
955		997
956	/* sync_file_range always needs emulation */	998	/* sync_file_range always needs emulation */
957	static int	999	static int
958	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	1000	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
959	{	1001	{
…		…
982	}	1024	}
983		1025
984	static int	1026	static int
985	eio__fallocate (int fd, int mode, off_t offset, size_t len)	1027	eio__fallocate (int fd, int mode, off_t offset, size_t len)
986	{	1028	{
987	#if HAVE_FALLOCATE	1029	#if HAVE_LINUX_FALLOCATE
988	return fallocate (fd, mode, offset, len);	1030	return fallocate (fd, mode, offset, len);
989	#else	1031	#else
990	errno = ENOSYS;	1032	return EIO_ENOSYS ();
991	return -1;
992	#endif	1033	#endif
993	}	1034	}
994		1035
995	#if !HAVE_READAHEAD	1036	#if !HAVE_READAHEAD
996	# undef readahead	1037	# undef readahead
997	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1038	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
998		1039
999	static ssize_t	1040	static eio_ssize_t
1000	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	1041	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
1001	{	1042	{
1002	size_t todo = count;	1043	size_t todo = count;
1003	dBUF;	1044	dBUF;
1004		1045
…		…
1009	pread (fd, eio_buf, len, offset);	1050	pread (fd, eio_buf, len, offset);
1010	offset += len;	1051	offset += len;
1011	todo -= len;	1052	todo -= len;
1012	}	1053	}
1013		1054
1014	errno = 0;	1055	FUBd;
		1056
		1057	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		1058	/* but not for e.g. EIO or eof, so we also never fail */
1015	return count;	1059	return 0;
1016	}	1060	}
1017		1061
1018	#endif	1062	#endif
1019		1063
1020	/* sendfile always needs emulation */	1064	/* sendfile always needs emulation */
1021	static ssize_t	1065	static eio_ssize_t
1022	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1066	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
1023	{	1067	{
1024	ssize_t written = 0;	1068	eio_ssize_t written = 0;
1025	ssize_t res;	1069	eio_ssize_t res;
1026		1070
1027	if (!count)	1071	if (!count)
1028	return 0;	1072	return 0;
1029		1073
1030	for (;;)	1074	for (;;)
…		…
1055		1099
1056	/* according to source inspection, this is correct, and useful behaviour */	1100	/* according to source inspection, this is correct, and useful behaviour */
1057	if (sbytes)	1101	if (sbytes)
1058	res = sbytes;	1102	res = sbytes;
1059		1103
1060	# elif defined (__APPLE__)	1104	# elif defined __APPLE__
1061	off_t sbytes = count;	1105	off_t sbytes = count;
1062	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1106	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1063		1107
1064	/* according to the manpage, sbytes is always valid */	1108	/* according to the manpage, sbytes is always valid */
1065	if (sbytes)	1109	if (sbytes)
…		…
1092	HANDLE h = TO_SOCKET (ifd);	1136	HANDLE h = TO_SOCKET (ifd);
1093	SetFilePointer (h, offset, 0, FILE_BEGIN);	1137	SetFilePointer (h, offset, 0, FILE_BEGIN);
1094	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1138	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1095		1139
1096	#else	1140	#else
1097	res = -1;	1141	res = EIO_ENOSYS ();
1098	errno = ENOSYS;
1099	#endif	1142	#endif
1100		1143
1101	/* we assume sendfile can copy at least 128mb in one go */	1144	/* we assume sendfile can copy at least 128mb in one go */
1102	if (res <= 128 * 1024 * 1024)	1145	if (res <= 128 * 1024 * 1024)
1103	{	1146	{
…		…
1125	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1168	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1126	/* BSDs */	1169	/* BSDs */
1127	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */	1170	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
1128	|| errno == ENOTSUP	1171	|| errno == ENOTSUP
1129	#endif	1172	#endif
		1173	#ifdef EOPNOTSUPP /* windows */
1130	|| errno == EOPNOTSUPP /* BSDs */	1174	|| errno == EOPNOTSUPP /* BSDs */
		1175	#endif
1131	#if __solaris	1176	#if __solaris
1132	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1177	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1133	#endif	1178	#endif
1134	)	1179	)
1135	)	1180	)
…		…
1139		1184
1140	res = 0;	1185	res = 0;
1141		1186
1142	while (count)	1187	while (count)
1143	{	1188	{
1144	ssize_t cnt;	1189	eio_ssize_t cnt;
1145		1190
1146	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1191	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
1147		1192
1148	if (cnt <= 0)	1193	if (cnt <= 0)
1149	{	1194	{
…		…
1161		1206
1162	offset += cnt;	1207	offset += cnt;
1163	res += cnt;	1208	res += cnt;
1164	count -= cnt;	1209	count -= cnt;
1165	}	1210	}
		1211
		1212	FUBd;
1166	}	1213	}
1167		1214
1168	return res;	1215	return res;
1169	}	1216	}
1170		1217
…		…
1197	/* round up length */	1244	/* round up length */
1198	*length = (*length + mask) & ~mask;	1245	*length = (*length + mask) & ~mask;
1199	}	1246	}
1200		1247
1201	#if !_POSIX_MEMLOCK	1248	#if !_POSIX_MEMLOCK
1202	# define eio__mlockall(a) eio_nosyscall()	1249	# define eio__mlockall(a) EIO_ENOSYS ()
1203	#else	1250	#else
1204		1251
1205	static int	1252	static int
1206	eio__mlockall (int flags)	1253	eio__mlockall (int flags)
1207	{	1254	{
…		…
1286		1333
1287	/*****************************************************************************/	1334	/*****************************************************************************/
1288	/* requests implemented outside eio_execute, because they are so large */	1335	/* requests implemented outside eio_execute, because they are so large */
1289		1336
1290	static void	1337	static void
1291	eio__realpath (eio_req *req, etp_worker *self)	1338	eio__lseek (eio_req *req)
1292	{	1339	{
1293	char *rel = req->ptr1;	1340	/* this usually gets optimised away completely, or your compiler sucks, */
		1341	/* or the whence constants really are not 0, 1, 2 */
		1342	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		1343	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		1344	: req->int2 == EIO_SEEK_END ? SEEK_END
		1345	: req->int2;
		1346
		1347	req->offs = lseek (req->int1, req->offs, whence);
		1348	req->result = req->offs == (off_t)-1 ? -1 : 0;
		1349	}
		1350
		1351	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		1352	static int
		1353	eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1354	{
		1355	const char *rel = path;
1294	char *res;	1356	char *res;
1295	char *tmp1, *tmp2;	1357	char *tmp1, *tmp2;
1296	#if SYMLOOP_MAX > 32	1358	#if SYMLOOP_MAX > 32
1297	int symlinks = SYMLOOP_MAX;	1359	int symlinks = SYMLOOP_MAX;
1298	#else	1360	#else
1299	int symlinks = 32;	1361	int symlinks = 32;
1300	#endif	1362	#endif
1301		1363
1302	req->result = -1;
1303
1304	errno = EINVAL;	1364	errno = EINVAL;
1305	if (!rel)	1365	if (!rel)
1306	return;	1366	return -1;
1307		1367
1308	errno = ENOENT;	1368	errno = ENOENT;
1309	if (!*rel)	1369	if (!*rel)
1310	return;	1370	return -1;
1311		1371
1312	if (!req->ptr2)	1372	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
1313	{
1314	X_LOCK (wrklock);
1315	req->flags |= EIO_FLAG_PTR2_FREE;
1316	X_UNLOCK (wrklock);
1317	req->ptr2 = malloc (PATH_MAX * 3);
1318
1319	errno = ENOMEM;
1320	if (!req->ptr2)
1321	return;
1322	}
1323
1324	res = req->ptr2;
1325	tmp1 = res + PATH_MAX;	1373	tmp1 = res + PATH_MAX;
1326	tmp2 = tmp1 + PATH_MAX;	1374	tmp2 = tmp1 + PATH_MAX;
1327		1375
1328	#if 0 /* disabled, the musl way to do things is just too racy */	1376	#if 0 /* disabled, the musl way to do things is just too racy */
1329	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1377	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1348	#endif	1396	#endif
1349	#endif	1397	#endif
1350		1398
1351	if (*rel != '/')	1399	if (*rel != '/')
1352	{	1400	{
		1401	int len;
		1402
		1403	errno = ENOENT;
		1404	if (wd == EIO_INVALID_WD)
		1405	return -1;
		1406
		1407	if (wd == EIO_CWD)
		1408	{
1353	if (!getcwd (res, PATH_MAX))	1409	if (!getcwd (res, PATH_MAX))
1354	return;	1410	return -1;
		1411
		1412	len = strlen (res);
		1413	}
		1414	else
		1415	memcpy (res, wd->str, len = wd->len);
1355		1416
1356	if (res [1]) /* only use if not / */	1417	if (res [1]) /* only use if not / */
1357	res += strlen (res);	1418	res += len;
1358	}	1419	}
1359		1420
1360	while (*rel)	1421	while (*rel)
1361	{	1422	{
1362	ssize_t len, linklen;	1423	eio_ssize_t len, linklen;
1363	char *beg = rel;	1424	const char *beg = rel;
1364		1425
1365	while (*rel && *rel != '/')	1426	while (*rel && *rel != '/')
1366	++rel;	1427	++rel;
1367		1428
1368	len = rel - beg;	1429	len = rel - beg;
…		…
1380		1441
1381	if (beg [1] == '.' && len == 2)	1442	if (beg [1] == '.' && len == 2)
1382	{	1443	{
1383	/* .. - back up one component, if possible */	1444	/* .. - back up one component, if possible */
1384		1445
1385	while (res != req->ptr2)	1446	while (res != tmpbuf->ptr)
1386	if (*--res == '/')	1447	if (*--res == '/')
1387	break;	1448	break;
1388		1449
1389	continue;	1450	continue;
1390	}	1451	}
1391	}	1452	}
1392		1453
1393	errno = ENAMETOOLONG;	1454	errno = ENAMETOOLONG;
1394	if (res + 1 + len + 1 >= tmp1)	1455	if (res + 1 + len + 1 >= tmp1)
1395	return;	1456	return -1;
1396		1457
1397	/* copy one component */	1458	/* copy one component */
1398	*res = '/';	1459	*res = '/';
1399	memcpy (res + 1, beg, len);	1460	memcpy (res + 1, beg, len);
1400		1461
1401	/* zero-terminate, for readlink */	1462	/* zero-terminate, for readlink */
1402	res [len + 1] = 0;	1463	res [len + 1] = 0;
1403		1464
1404	/* now check if it's a symlink */	1465	/* now check if it's a symlink */
1405	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1466	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1406		1467
1407	if (linklen < 0)	1468	if (linklen < 0)
1408	{	1469	{
1409	if (errno != EINVAL)	1470	if (errno != EINVAL)
1410	return;	1471	return -1;
1411		1472
1412	/* it's a normal directory. hopefully */	1473	/* it's a normal directory. hopefully */
1413	res += len + 1;	1474	res += len + 1;
1414	}	1475	}
1415	else	1476	else
…		…
1417	/* yay, it was a symlink - build new path in tmp2 */	1478	/* yay, it was a symlink - build new path in tmp2 */
1418	int rellen = strlen (rel);	1479	int rellen = strlen (rel);
1419		1480
1420	errno = ENAMETOOLONG;	1481	errno = ENAMETOOLONG;
1421	if (linklen + 1 + rellen >= PATH_MAX)	1482	if (linklen + 1 + rellen >= PATH_MAX)
1422	return;	1483	return -1;
1423		1484
1424	errno = ELOOP;	1485	errno = ELOOP;
1425	if (!--symlinks)	1486	if (!--symlinks)
1426	return;	1487	return -1;
1427		1488
1428	if (*tmp1 == '/')	1489	if (*tmp1 == '/')
1429	res = req->ptr2; /* symlink resolves to an absolute path */	1490	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1430		1491
1431	/* we need to be careful, as rel might point into tmp2 already */	1492	/* we need to be careful, as rel might point into tmp2 already */
1432	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1493	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1433	tmp2 [linklen] = '/';	1494	tmp2 [linklen] = '/';
1434	memcpy (tmp2, tmp1, linklen);	1495	memcpy (tmp2, tmp1, linklen);
…		…
1436	rel = tmp2;	1497	rel = tmp2;
1437	}	1498	}
1438	}	1499	}
1439		1500
1440	/* special case for the lone root path */	1501	/* special case for the lone root path */
1441	if (res == req->ptr2)	1502	if (res == tmpbuf->ptr)
1442	*res++ = '/';	1503	*res++ = '/';
1443		1504
1444	req->result = res - (char *)req->ptr2;	1505	return res - (char *)tmpbuf->ptr;
1445
1446	done:
1447	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1448	}	1506	}
1449		1507
1450	static signed char	1508	static signed char
1451	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1509	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1452	{	1510	{
…		…
1460		1518
1461	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1519	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1462	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1520	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1463		1521
1464	static void	1522	static void
1465	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1523	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1466	{	1524	{
1467	unsigned char bits [9 + sizeof (ino_t) * 8];	1525	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1468	unsigned char *bit = bits;	1526	unsigned char *bit = bits;
1469		1527
1470	assert (CHAR_BIT == 8);	1528	assert (CHAR_BIT == 8);
1471	assert (sizeof (eio_dirent) * 8 < 256);	1529	assert (sizeof (eio_dirent) * 8 < 256);
1472	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */	1530	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
…		…
1474		1532
1475	if (size <= EIO_SORT_FAST)	1533	if (size <= EIO_SORT_FAST)
1476	return;	1534	return;
1477		1535
1478	/* first prepare an array of bits to test in our radix sort */	1536	/* first prepare an array of bits to test in our radix sort */
1479	/* try to take endianness into account, as well as differences in ino_t sizes */	1537	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1480	/* inode_bits must contain all inodes ORed together */	1538	/* inode_bits must contain all inodes ORed together */
1481	/* which is used to skip bits that are 0 everywhere, which is very common */	1539	/* which is used to skip bits that are 0 everywhere, which is very common */
1482	{	1540	{
1483	ino_t endianness;	1541	eio_ino_t endianness;
1484	int i, j;	1542	int i, j;
1485		1543
1486	/* we store the byte offset of byte n into byte n of "endianness" */	1544	/* we store the byte offset of byte n into byte n of "endianness" */
1487	for (i = 0; i < sizeof (ino_t); ++i)	1545	for (i = 0; i < sizeof (eio_ino_t); ++i)
1488	((unsigned char *)&endianness)[i] = i;	1546	((unsigned char *)&endianness)[i] = i;
1489		1547
1490	*bit++ = 0;	1548	*bit++ = 0;
1491		1549
1492	for (i = 0; i < sizeof (ino_t); ++i)	1550	for (i = 0; i < sizeof (eio_ino_t); ++i)
1493	{	1551	{
1494	/* shifting off the byte offsets out of "endianness" */	1552	/* shifting off the byte offsets out of "endianness" */
1495	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1553	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1496	endianness >>= 8;	1554	endianness >>= 8;
1497		1555
1498	for (j = 0; j < 8; ++j)	1556	for (j = 0; j < 8; ++j)
1499	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1557	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1500	*bit++ = offs + j;	1558	*bit++ = offs + j;
1501	}	1559	}
1502		1560
1503	for (j = 0; j < 8; ++j)	1561	for (j = 0; j < 8; ++j)
1504	if (score_bits & (1 << j))	1562	if (score_bits & (1 << j))
1505	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1563	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1506	}	1564	}
1507		1565
1508	/* now actually do the sorting (a variant of MSD radix sort) */	1566	/* now actually do the sorting (a variant of MSD radix sort) */
1509	{	1567	{
1510	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1568	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1511	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1569	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1512	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1570	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1513	int stk_idx = 0;	1571	int stk_idx = 0;
1514		1572
1515	base_stk [stk_idx] = dents;	1573	base_stk [stk_idx] = dents;
1516	end_stk [stk_idx] = dents + size;	1574	end_stk [stk_idx] = dents + size;
1517	bit_stk [stk_idx] = bit - 1;	1575	bit_stk [stk_idx] = bit - 1;
…		…
1596	}	1654	}
1597	}	1655	}
1598	}	1656	}
1599		1657
1600	static void	1658	static void
1601	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1659	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1602	{	1660	{
1603	if (size <= 1)	1661	if (size <= 1)
1604	return; /* our insertion sort relies on size > 0 */	1662	return; /* our insertion sort relies on size > 0 */
1605		1663
1606	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1664	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1614		1672
1615	/* read a full directory */	1673	/* read a full directory */
1616	static void	1674	static void
1617	eio__scandir (eio_req *req, etp_worker *self)	1675	eio__scandir (eio_req *req, etp_worker *self)
1618	{	1676	{
1619	DIR *dirp;
1620	EIO_STRUCT_DIRENT *entp;
1621	char *name, *names;	1677	char *name, *names;
1622	int namesalloc = 4096;	1678	int namesalloc = 4096 - sizeof (void *) * 4;
1623	int namesoffs = 0;	1679	int namesoffs = 0;
1624	int flags = req->int1;	1680	int flags = req->int1;
1625	eio_dirent *dents = 0;	1681	eio_dirent *dents = 0;
1626	int dentalloc = 128;	1682	int dentalloc = 128;
1627	int dentoffs = 0;	1683	int dentoffs = 0;
1628	ino_t inode_bits = 0;	1684	eio_ino_t inode_bits = 0;
		1685	#ifdef _WIN32
		1686	HANDLE dirp;
		1687	WIN32_FIND_DATA entp;
		1688	#else
		1689	DIR *dirp;
		1690	EIO_STRUCT_DIRENT *entp;
		1691	#endif
1629		1692
1630	req->result = -1;	1693	req->result = -1;
1631		1694
1632	if (!(flags & EIO_READDIR_DENTS))	1695	if (!(flags & EIO_READDIR_DENTS))
1633	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1696	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1634		1697
1635	X_LOCK (wrklock);	1698	#ifdef _WIN32
1636	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1699	{
		1700	int len = strlen ((const char *)req->ptr1);
		1701	char *path = malloc (MAX_PATH);
		1702	const char *fmt;
		1703	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		1704
		1705	if (!len)
		1706	fmt = "./*";
		1707	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
		1708	fmt = "%s*";
		1709	else
		1710	fmt = "%s/*";
		1711
		1712	_snprintf (path, MAX_PATH, fmt, reqpath);
		1713	dirp = FindFirstFile (path, &entp);
		1714	free (path);
		1715
		1716	if (dirp == INVALID_HANDLE_VALUE)
		1717	{
		1718	/* should steal _dosmaperr */
		1719	switch (GetLastError ())
		1720	{
		1721	case ERROR_FILE_NOT_FOUND:
		1722	req->result = 0;
		1723	break;
		1724
		1725	case ERROR_INVALID_NAME:
		1726	case ERROR_PATH_NOT_FOUND:
		1727	case ERROR_NO_MORE_FILES:
		1728	errno = ENOENT;
		1729	break;
		1730
		1731	case ERROR_NOT_ENOUGH_MEMORY:
		1732	errno = ENOMEM;
		1733	break;
		1734
		1735	default:
		1736	errno = EINVAL;
		1737	break;
		1738	}
		1739
		1740	return;
		1741	}
		1742	}
		1743	#else
		1744	#if HAVE_AT
		1745	if (req->wd)
		1746	{
		1747	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1748
		1749	if (fd < 0)
		1750	return;
		1751
		1752	dirp = fdopendir (fd);
		1753
		1754	if (!dirp)
		1755	close (fd);
		1756	}
		1757	else
1637	self->dirp = dirp = opendir (req->ptr1);	1758	dirp = opendir (req->ptr1);
		1759	#else
		1760	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1761	#endif
		1762
		1763	if (!dirp)
		1764	return;
		1765	#endif
1638		1766
1639	if (req->flags & EIO_FLAG_PTR1_FREE)	1767	if (req->flags & EIO_FLAG_PTR1_FREE)
1640	free (req->ptr1);	1768	free (req->ptr1);
1641		1769
1642	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1770	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1643	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1771	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1644	req->ptr2 = names = malloc (namesalloc);	1772	req->ptr2 = names = malloc (namesalloc);
1645	X_UNLOCK (wrklock);
1646		1773
1647	if (dirp && names && (!flags || dents))	1774	if (!names || (flags && !dents))
		1775	return;
		1776
1648	for (;;)	1777	for (;;)
1649	{	1778	{
		1779	int done;
		1780
		1781	#ifdef _WIN32
		1782	done = !dirp;
		1783	#else
1650	errno = 0;	1784	errno = 0;
1651	entp = readdir (dirp);	1785	entp = readdir (dirp);
		1786	done = !entp;
		1787	#endif
1652		1788
1653	if (!entp)	1789	if (done)
1654	{	1790	{
		1791	#ifndef _WIN32
		1792	int old_errno = errno;
		1793	closedir (dirp);
		1794	errno = old_errno;
		1795
1655	if (errno)	1796	if (errno)
1656	break;	1797	break;
		1798	#endif
1657		1799
1658	/* sort etc. */	1800	/* sort etc. */
1659	req->int1 = flags;	1801	req->int1 = flags;
1660	req->result = dentoffs;	1802	req->result = dentoffs;
1661		1803
1662	if (flags & EIO_READDIR_STAT_ORDER)	1804	if (flags & EIO_READDIR_STAT_ORDER)
1663	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);	1805	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1664	else if (flags & EIO_READDIR_DIRS_FIRST)	1806	else if (flags & EIO_READDIR_DIRS_FIRST)
1665	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1807	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1666	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1808	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1667	else	1809	else
		1810	{
		1811	/* in this case, all is known, and we just put dirs first and sort them */
		1812	eio_dirent *oth = dents + dentoffs;
		1813	eio_dirent *dir = dents;
		1814
		1815	/* now partition dirs to the front, and non-dirs to the back */
		1816	/* by walking from both sides and swapping if necessary */
		1817	while (oth > dir)
		1818	{
		1819	if (dir->type == EIO_DT_DIR)
		1820	++dir;
		1821	else if ((--oth)->type == EIO_DT_DIR)
		1822	{
		1823	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1824
		1825	++dir;
		1826	}
		1827	}
		1828
		1829	/* now sort the dirs only (dirs all have the same score) */
		1830	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1831	}
		1832
		1833	break;
		1834	}
		1835
		1836	/* now add the entry to our list(s) */
		1837	name = D_NAME (entp);
		1838
		1839	/* skip . and .. entries */
		1840	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1841	{
		1842	int len = D_NAMLEN (entp) + 1;
		1843
		1844	while (ecb_expect_false (namesoffs + len > namesalloc))
		1845	{
		1846	namesalloc *= 2;
		1847	req->ptr2 = names = realloc (names, namesalloc);
		1848
		1849	if (!names)
		1850	break;
		1851	}
		1852
		1853	memcpy (names + namesoffs, name, len);
		1854
		1855	if (dents)
		1856	{
		1857	struct eio_dirent *ent;
		1858
		1859	if (ecb_expect_false (dentoffs == dentalloc))
1668	{	1860	{
1669	/* in this case, all is known, and we just put dirs first and sort them */	1861	dentalloc *= 2;
		1862	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1863
		1864	if (!dents)
		1865	break;
		1866	}
		1867
1670	eio_dirent *oth = dents + dentoffs;	1868	ent = dents + dentoffs;
1671	eio_dirent *dir = dents;
1672		1869
1673	/* now partition dirs to the front, and non-dirs to the back */	1870	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1674	/* by walking from both sides and swapping if necessary */	1871	ent->namelen = len - 1;
1675	while (oth > dir)	1872	ent->inode = D_INO (entp);
		1873
		1874	inode_bits |= ent->inode;
		1875
		1876	switch (D_TYPE (entp))
		1877	{
		1878	default:
		1879	ent->type = EIO_DT_UNKNOWN;
		1880	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1881	break;
		1882
		1883	#ifdef DT_FIFO
		1884	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1885	#endif
		1886	#ifdef DT_CHR
		1887	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1888	#endif
		1889	#ifdef DT_MPC
		1890	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1891	#endif
		1892	#ifdef DT_DIR
		1893	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1894	#endif
		1895	#ifdef DT_NAM
		1896	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1897	#endif
		1898	#ifdef DT_BLK
		1899	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1900	#endif
		1901	#ifdef DT_MPB
		1902	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1903	#endif
		1904	#ifdef DT_REG
		1905	case DT_REG: ent->type = EIO_DT_REG; break;
		1906	#endif
		1907	#ifdef DT_NWK
		1908	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1909	#endif
		1910	#ifdef DT_CMP
		1911	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1912	#endif
		1913	#ifdef DT_LNK
		1914	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1915	#endif
		1916	#ifdef DT_SOCK
		1917	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1918	#endif
		1919	#ifdef DT_DOOR
		1920	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1921	#endif
		1922	#ifdef DT_WHT
		1923	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1924	#endif
		1925	}
		1926
		1927	ent->score = 7;
		1928
		1929	if (flags & EIO_READDIR_DIRS_FIRST)
		1930	{
		1931	if (ent->type == EIO_DT_UNKNOWN)
1676	{	1932	{
1677	if (dir->type == EIO_DT_DIR)	1933	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1678	++dir;	1934	ent->score = 1;
1679	else if ((--oth)->type == EIO_DT_DIR)	1935	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1680	{	1936	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1681	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1682
1683	++dir;
1684	}
1685	}	1937	}
1686		1938	else if (ent->type == EIO_DT_DIR)
1687	/* now sort the dirs only (dirs all have the same score) */	1939	ent->score = 0;
1688	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1689	}	1940	}
1690
1691	break;
1692	}
1693
1694	/* now add the entry to our list(s) */
1695	name = entp->d_name;
1696
1697	/* skip . and .. entries */
1698	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1699	{
1700	int len = D_NAMLEN (entp) + 1;
1701
1702	while (ecb_expect_false (namesoffs + len > namesalloc))
1703	{
1704	namesalloc *= 2;
1705	X_LOCK (wrklock);
1706	req->ptr2 = names = realloc (names, namesalloc);
1707	X_UNLOCK (wrklock);
1708
1709	if (!names)
1710	break;
1711	}	1941	}
1712		1942
1713	memcpy (names + namesoffs, name, len);
1714
1715	if (dents)
1716	{
1717	struct eio_dirent *ent;
1718
1719	if (ecb_expect_false (dentoffs == dentalloc))
1720	{
1721	dentalloc *= 2;
1722	X_LOCK (wrklock);
1723	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1724	X_UNLOCK (wrklock);
1725
1726	if (!dents)
1727	break;
1728	}
1729
1730	ent = dents + dentoffs;
1731
1732	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1733	ent->namelen = len - 1;
1734	ent->inode = D_INO (entp);
1735
1736	inode_bits |= ent->inode;
1737
1738	switch (D_TYPE (entp))
1739	{
1740	default:
1741	ent->type = EIO_DT_UNKNOWN;
1742	flags |= EIO_READDIR_FOUND_UNKNOWN;
1743	break;
1744
1745	#ifdef DT_FIFO
1746	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1747	#endif
1748	#ifdef DT_CHR
1749	case DT_CHR: ent->type = EIO_DT_CHR; break;
1750	#endif
1751	#ifdef DT_MPC
1752	case DT_MPC: ent->type = EIO_DT_MPC; break;
1753	#endif
1754	#ifdef DT_DIR
1755	case DT_DIR: ent->type = EIO_DT_DIR; break;
1756	#endif
1757	#ifdef DT_NAM
1758	case DT_NAM: ent->type = EIO_DT_NAM; break;
1759	#endif
1760	#ifdef DT_BLK
1761	case DT_BLK: ent->type = EIO_DT_BLK; break;
1762	#endif
1763	#ifdef DT_MPB
1764	case DT_MPB: ent->type = EIO_DT_MPB; break;
1765	#endif
1766	#ifdef DT_REG
1767	case DT_REG: ent->type = EIO_DT_REG; break;
1768	#endif
1769	#ifdef DT_NWK
1770	case DT_NWK: ent->type = EIO_DT_NWK; break;
1771	#endif
1772	#ifdef DT_CMP
1773	case DT_CMP: ent->type = EIO_DT_CMP; break;
1774	#endif
1775	#ifdef DT_LNK
1776	case DT_LNK: ent->type = EIO_DT_LNK; break;
1777	#endif
1778	#ifdef DT_SOCK
1779	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1780	#endif
1781	#ifdef DT_DOOR
1782	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1783	#endif
1784	#ifdef DT_WHT
1785	case DT_WHT: ent->type = EIO_DT_WHT; break;
1786	#endif
1787	}
1788
1789	ent->score = 7;
1790
1791	if (flags & EIO_READDIR_DIRS_FIRST)
1792	{
1793	if (ent->type == EIO_DT_UNKNOWN)
1794	{
1795	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1796	ent->score = 1;
1797	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1798	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1799	}
1800	else if (ent->type == EIO_DT_DIR)
1801	ent->score = 0;
1802	}
1803	}
1804
1805	namesoffs += len;	1943	namesoffs += len;
1806	++dentoffs;	1944	++dentoffs;
1807	}	1945	}
1808		1946
1809	if (EIO_CANCELLED (req))	1947	if (EIO_CANCELLED (req))
1810	{	1948	{
1811	errno = ECANCELED;	1949	errno = ECANCELED;
1812	break;	1950	break;
1813	}	1951	}
		1952
		1953	#ifdef _WIN32
		1954	if (!FindNextFile (dirp, &entp))
		1955	{
		1956	FindClose (dirp);
		1957	dirp = 0;
1814	}	1958	}
		1959	#endif
		1960	}
1815	}	1961	}
		1962
		1963	/*****************************************************************************/
		1964	/* working directory stuff */
		1965	/* various deficiencies in the posix 2008 api force us to */
		1966	/* keep the absolute path in string form at all times */
		1967	/* fuck yeah. */
		1968
		1969	#if !HAVE_AT
		1970
		1971	/* a bit like realpath, but usually faster because it doesn'T have to return */
		1972	/* an absolute or canonical path */
		1973	static const char *
		1974	wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1975	{
		1976	if (!wd || *path == '/')
		1977	return path;
		1978
		1979	if (path [0] == '.' && !path [1])
		1980	return wd->str;
		1981
		1982	{
		1983	int l1 = wd->len;
		1984	int l2 = strlen (path);
		1985
		1986	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
		1987
		1988	memcpy (res, wd->str, l1);
		1989	res [l1] = '/';
		1990	memcpy (res + l1 + 1, path, l2 + 1);
		1991
		1992	return res;
		1993	}
		1994	}
		1995
		1996	#endif
		1997
		1998	static eio_wd
		1999	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		2000	{
		2001	int fd;
		2002	eio_wd res;
		2003	int len = eio__realpath (tmpbuf, wd, path);
		2004
		2005	if (len < 0)
		2006	return EIO_INVALID_WD;
		2007
		2008	#if HAVE_AT
		2009	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		2010
		2011	if (fd < 0)
		2012	return EIO_INVALID_WD;
		2013	#endif
		2014
		2015	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		2016
		2017	#if HAVE_AT
		2018	res->fd = fd;
		2019	#endif
		2020
		2021	res->len = len;
		2022	memcpy (res->str, tmpbuf->ptr, len);
		2023	res->str [len] = 0;
		2024
		2025	return res;
		2026	}
		2027
		2028	eio_wd
		2029	eio_wd_open_sync (eio_wd wd, const char *path)
		2030	{
		2031	struct tmpbuf tmpbuf = { 0 };
		2032	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		2033	free (tmpbuf.ptr);
		2034
		2035	return wd;
		2036	}
		2037
		2038	void
		2039	eio_wd_close_sync (eio_wd wd)
		2040	{
		2041	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		2042	{
		2043	#if HAVE_AT
		2044	close (wd->fd);
		2045	#endif
		2046	free (wd);
		2047	}
		2048	}
		2049
		2050	#if HAVE_AT
		2051
		2052	/* they forgot these */
		2053
		2054	static int
		2055	eio__truncateat (int dirfd, const char *path, off_t length)
		2056	{
		2057	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		2058	int res;
		2059
		2060	if (fd < 0)
		2061	return fd;
		2062
		2063	res = ftruncate (fd, length);
		2064	close (fd);
		2065	return res;
		2066	}
		2067
		2068	static int
		2069	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		2070	{
		2071	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		2072	int res;
		2073
		2074	if (fd < 0)
		2075	return fd;
		2076
		2077	res = fstatvfs (fd, buf);
		2078	close (fd);
		2079	return res;
		2080
		2081	}
		2082
		2083	#endif
1816		2084
1817	/*****************************************************************************/	2085	/*****************************************************************************/
1818		2086
1819	#define ALLOC(len) \	2087	#define ALLOC(len) \
1820	if (!req->ptr2) \	2088	if (!req->ptr2) \
…		…
1829	req->result = -1; \	2097	req->result = -1; \
1830	break; \	2098	break; \
1831	} \	2099	} \
1832	}	2100	}
1833		2101
		2102	static void ecb_noinline ecb_cold
		2103	etp_proc_init (void)
		2104	{
		2105	#if HAVE_PRCTL_SET_NAME
		2106	/* provide a more sensible "thread name" */
		2107	char name[16 + 1];
		2108	const int namelen = sizeof (name) - 1;
		2109	int len;
		2110
		2111	prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);
		2112	name [namelen] = 0;
		2113	len = strlen (name);
		2114	strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
		2115	prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
		2116	#endif
		2117	}
		2118
1834	X_THREAD_PROC (etp_proc)	2119	X_THREAD_PROC (etp_proc)
1835	{	2120	{
1836	ETP_REQ *req;	2121	ETP_REQ *req;
1837	struct timespec ts;	2122	struct timespec ts;
1838	etp_worker *self = (etp_worker *)thr_arg;	2123	etp_worker *self = (etp_worker *)thr_arg;
1839	int timeout;	2124
		2125	etp_proc_init ();
1840		2126
1841	/* try to distribute timeouts somewhat evenly */	2127	/* try to distribute timeouts somewhat evenly */
1842	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	2128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1843		2129
1844	for (;;)	2130	for (;;)
…		…
1847		2133
1848	X_LOCK (reqlock);	2134	X_LOCK (reqlock);
1849		2135
1850	for (;;)	2136	for (;;)
1851	{	2137	{
1852	self->req = req = reqq_shift (&req_queue);	2138	req = reqq_shift (&req_queue);
1853		2139
1854	if (req)	2140	if (req)
1855	break;	2141	break;
1856		2142
1857	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */	2143	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
…		…
1895	++npending;	2181	++npending;
1896		2182
1897	if (!reqq_push (&res_queue, req) && want_poll_cb)	2183	if (!reqq_push (&res_queue, req) && want_poll_cb)
1898	want_poll_cb ();	2184	want_poll_cb ();
1899		2185
1900	self->req = 0;
1901	etp_worker_clear (self);	2186	etp_worker_clear (self);
1902		2187
1903	X_UNLOCK (reslock);	2188	X_UNLOCK (reslock);
1904	}	2189	}
1905		2190
1906	quit:	2191	quit:
		2192	free (req);
		2193
1907	X_LOCK (wrklock);	2194	X_LOCK (wrklock);
1908	etp_worker_free (self);	2195	etp_worker_free (self);
1909	X_UNLOCK (wrklock);	2196	X_UNLOCK (wrklock);
1910
1911	return 0;
1912	}	2197	}
1913		2198
1914	/*****************************************************************************/	2199	/*****************************************************************************/
1915		2200
1916	int ecb_cold	2201	int ecb_cold
…		…
1923	eio_api_destroy (eio_req *req)	2208	eio_api_destroy (eio_req *req)
1924	{	2209	{
1925	free (req);	2210	free (req);
1926	}	2211	}
1927		2212
1928	#define REQ(rtype) \	2213	#define REQ(rtype) \
1929	eio_req *req; \	2214	eio_req *req; \
1930	\	2215	\
1931	req = (eio_req *)calloc (1, sizeof *req); \	2216	req = (eio_req *)calloc (1, sizeof *req); \
1932	if (!req) \	2217	if (!req) \
1933	return 0; \	2218	return 0; \
…		…
1950	}	2235	}
1951		2236
1952	static void	2237	static void
1953	eio_execute (etp_worker *self, eio_req *req)	2238	eio_execute (etp_worker *self, eio_req *req)
1954	{	2239	{
		2240	#if HAVE_AT
		2241	int dirfd;
		2242	#else
		2243	const char *path;
		2244	#endif
		2245
1955	if (ecb_expect_false (EIO_CANCELLED (req)))	2246	if (ecb_expect_false (EIO_CANCELLED (req)))
1956	{	2247	{
1957	req->result = -1;	2248	req->result = -1;
1958	req->errorno = ECANCELED;	2249	req->errorno = ECANCELED;
1959	return;	2250	return;
1960	}	2251	}
1961		2252
		2253	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		2254	{
		2255	req->result = -1;
		2256	req->errorno = ENOENT;
		2257	return;
		2258	}
		2259
		2260	if (req->type >= EIO_OPEN)
		2261	{
		2262	#if HAVE_AT
		2263	dirfd = WD2FD (req->wd);
		2264	#else
		2265	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		2266	#endif
		2267	}
		2268
1962	switch (req->type)	2269	switch (req->type)
1963	{	2270	{
		2271	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		2272	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		2273	break;
		2274	case EIO_WD_CLOSE: req->result = 0;
		2275	eio_wd_close_sync (req->wd); break;
		2276
		2277	case EIO_SEEK: eio__lseek (req); break;
1964	case EIO_READ: ALLOC (req->size);	2278	case EIO_READ: ALLOC (req->size);
1965	req->result = req->offs >= 0	2279	req->result = req->offs >= 0
1966	? pread (req->int1, req->ptr2, req->size, req->offs)	2280	? pread (req->int1, req->ptr2, req->size, req->offs)
1967	: read (req->int1, req->ptr2, req->size); break;	2281	: read (req->int1, req->ptr2, req->size); break;
1968	case EIO_WRITE: req->result = req->offs >= 0	2282	case EIO_WRITE: req->result = req->offs >= 0
1969	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2283	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1970	: write (req->int1, req->ptr2, req->size); break;	2284	: write (req->int1, req->ptr2, req->size); break;
1971		2285
1972	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2286	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1973	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2287	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
		2288
		2289	#if HAVE_AT
1974		2290
1975	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2291	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1976	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2292	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1977	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2293	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2294	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		2295	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		2296	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		2297	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		2298	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		2299
		2300	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		2301	case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		2302	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		2303	case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		2304	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		2305	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		2306	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		2307	case EIO_READLINK: ALLOC (PATH_MAX);
		2308	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
		2309	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2310	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2311	case EIO_UTIME:
		2312	case EIO_FUTIME:
		2313	{
		2314	struct timespec ts[2];
		2315	struct timespec *times;
		2316
		2317	if (req->nv1 != -1. || req->nv2 != -1.)
		2318	{
		2319	ts[0].tv_sec = req->nv1;
		2320	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		2321	ts[1].tv_sec = req->nv2;
		2322	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		2323
		2324	times = ts;
		2325	}
		2326	else
		2327	times = 0;
		2328
		2329	req->result = req->type == EIO_FUTIME
		2330	? futimens (req->int1, times)
		2331	: utimensat (dirfd, req->ptr1, times, 0);
		2332	}
		2333	break;
		2334
		2335	#else
		2336
		2337	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2338	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2339	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1978	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2340	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2341	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		2342	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		2343	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		2344	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		2345
		2346	case EIO_UNLINK: req->result = unlink (path ); break;
		2347	case EIO_RMDIR: req->result = rmdir (path ); break;
		2348	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		2349	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		2350	case EIO_LINK: req->result = link (path , req->ptr2); break;
		2351	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		2352	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		2353	case EIO_READLINK: ALLOC (PATH_MAX);
		2354	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		2355	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2356	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2357
		2358	case EIO_UTIME:
		2359	case EIO_FUTIME:
		2360	{
		2361	struct timeval tv[2];
		2362	struct timeval *times;
		2363
		2364	if (req->nv1 != -1. || req->nv2 != -1.)
		2365	{
		2366	tv[0].tv_sec = req->nv1;
		2367	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		2368	tv[1].tv_sec = req->nv2;
		2369	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		2370
		2371	times = tv;
		2372	}
		2373	else
		2374	times = 0;
		2375
		2376	req->result = req->type == EIO_FUTIME
		2377	? futimes (req->int1, times)
		2378	: utimes (req->ptr1, times);
		2379	}
		2380	break;
		2381
		2382	#endif
		2383
		2384	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		2385	{
		2386	ALLOC (req->result);
		2387	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		2388	}
		2389	break;
		2390
1979	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2391	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1980	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2392	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1981		2393
1982	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1983	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1984	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	2394	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1985	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	2395	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1986		2396
1987	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1988	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2397	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1989	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1990	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2398	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1991	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1992	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2399	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1993		2400
1994	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
1995	case EIO_CLOSE: req->result = close (req->int1); break;	2401	case EIO_CLOSE: req->result = close (req->int1); break;
1996	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2402	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1997	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
1998	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1999	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2000	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2001	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2002	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2003	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2004
2005	case EIO_REALPATH: eio__realpath (req, self); break;
2006
2007	case EIO_READLINK: ALLOC (PATH_MAX);
2008	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2009
2010	case EIO_SYNC: req->result = 0; sync (); break;	2403	case EIO_SYNC: req->result = 0; sync (); break;
2011	case EIO_FSYNC: req->result = fsync (req->int1); break;	2404	case EIO_FSYNC: req->result = fsync (req->int1); break;
2012	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2405	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2406	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2407	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2013	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2408	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2014	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	2409	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2015	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	2410	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2016	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	2411	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2017	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2018	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	2412	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2019		2413
2020	case EIO_READDIR: eio__scandir (req, self); break;	2414	case EIO_READDIR: eio__scandir (req, self); break;
2021		2415
2022	case EIO_BUSY:	2416	case EIO_BUSY:
…		…
2032	req->result = select (0, 0, 0, 0, &tv);	2426	req->result = select (0, 0, 0, 0, &tv);
2033	}	2427	}
2034	#endif	2428	#endif
2035	break;	2429	break;
2036		2430
2037	case EIO_UTIME:
2038	case EIO_FUTIME:
2039	{
2040	struct timeval tv[2];
2041	struct timeval *times;
2042
2043	if (req->nv1 != -1. || req->nv2 != -1.)
2044	{
2045	tv[0].tv_sec = req->nv1;
2046	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2047	tv[1].tv_sec = req->nv2;
2048	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2049
2050	times = tv;
2051	}
2052	else
2053	times = 0;
2054
2055	req->result = req->type == EIO_FUTIME
2056	? futimes (req->int1, times)
2057	: utimes (req->ptr1, times);
2058	}
2059	break;
2060
2061	case EIO_GROUP:	2431	case EIO_GROUP:
2062	abort (); /* handled in eio_request */	2432	abort (); /* handled in eio_request */
2063		2433
2064	case EIO_NOP:	2434	case EIO_NOP:
2065	req->result = 0;	2435	req->result = 0;
…		…
2068	case EIO_CUSTOM:	2438	case EIO_CUSTOM:
2069	req->feed (req);	2439	req->feed (req);
2070	break;	2440	break;
2071		2441
2072	default:	2442	default:
2073	errno = ENOSYS;
2074	req->result = -1;	2443	req->result = EIO_ENOSYS ();
2075	break;	2444	break;
2076	}	2445	}
2077		2446
2078	req->errorno = errno;	2447	req->errorno = errno;
2079	}	2448	}
2080		2449
2081	#ifndef EIO_NO_WRAPPERS	2450	#ifndef EIO_NO_WRAPPERS
2082		2451
		2452	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		2453	{
		2454	REQ (EIO_WD_OPEN); PATH; SEND;
		2455	}
		2456
		2457	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2458	{
		2459	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2460	}
		2461
2083	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2462	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2084	{	2463	{
2085	REQ (EIO_NOP); SEND;	2464	REQ (EIO_NOP); SEND;
2086	}	2465	}
2087		2466
…		…
2103	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2482	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2104	{	2483	{
2105	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2484	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2106	}	2485	}
2107		2486
		2487	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2488	{
		2489	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2490	}
		2491
		2492	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2493	{
		2494	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2495	}
		2496
		2497	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2498	{
		2499	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2500	}
		2501
2108	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2502	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2109	{	2503	{
2110	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2504	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2111	}	2505	}
2112		2506
…		…
2118	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2512	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2119	{	2513	{
2120	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2514	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2121	}	2515	}
2122		2516
2123	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2124	{
2125	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2126	}
2127
2128	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)	2517	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2129	{	2518	{
2130	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;	2519	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2131	}	2520	}
2132		2521
2133	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2134	{
2135	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2136	}
2137
2138	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2522	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2139	{	2523	{
2140	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2524	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2141	}	2525	}
2142		2526
2143	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2527	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2144	{	2528	{
2145	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2529	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2146	}	2530	}
2147		2531
		2532	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2533	{
		2534	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2535	}
		2536
2148	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2537	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2149	{	2538	{
2150	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2539	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2151	}	2540	}
2152		2541
…		…
2178	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2567	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
2179	{	2568	{
2180	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2569	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
2181	}	2570	}
2182		2571
2183	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2572	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
2184	{	2573	{
2185	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2574	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
2186	}	2575	}
2187		2576
2188	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2577	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
2208	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2597	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
2209	{	2598	{
2210	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2599	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
2211	}	2600	}
2212		2601
2213	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2602	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
2214	{	2603	{
2215	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2604	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
2216	}	2605	}
2217		2606
2218	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2607	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
2365	}	2754	}
2366		2755
2367	/*****************************************************************************/	2756	/*****************************************************************************/
2368	/* misc garbage */	2757	/* misc garbage */
2369		2758
2370	ssize_t	2759	eio_ssize_t
2371	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2760	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2372	{	2761	{
2373	etp_worker wrk;
2374	ssize_t ret;
2375
2376	wrk.dbuf = 0;
2377
2378	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2762	return eio__sendfile (ofd, ifd, offset, count);
2379
2380	if (wrk.dbuf)
2381	free (wrk.dbuf);
2382
2383	return ret;
2384	}	2763	}
2385		2764

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