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Comparing libeio/eio.c (file contents):
Revision 1.92 by root, Sun Jul 17 18:27:17 2011 UTC vs.
Revision 1.143 by root, Sat Dec 3 16:33:46 2016 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) 2007,2008,2009,2010,2011,2012,2013,2016 Marc Alexander Lehmann <libeio@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
42	#endif	42	#endif
43		43
44	#include "eio.h"	44	#include "eio.h"
45	#include "ecb.h"	45	#include "ecb.h"
46		46
47	#ifdef EIO_STACKSIZE
48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
49	#endif
50	#include "xthread.h"
51
52	#include <errno.h>	47	#include <errno.h>
53	#include <stddef.h>	48	#include <stddef.h>
54	#include <stdlib.h>	49	#include <stdlib.h>
55	#include <string.h>	50	#include <string.h>
56	#include <errno.h>	51	#include <errno.h>
…		…
71	#endif	66	#endif
72	#ifndef ELOOP	67	#ifndef ELOOP
73	# define ELOOP EDOM	68	# define ELOOP EDOM
74	#endif	69	#endif
75		70
		71	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		72	# define ENOTSOCK WSAENOTSOCK
		73	#endif
		74
76	static void eio_destroy (eio_req *req);	75	static void eio_destroy (eio_req *req);
77		76
78	#ifndef EIO_FINISH	77	#ifndef EIO_FINISH
79	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	78	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
80	#endif	79	#endif
…		…
101	#ifdef _WIN32	100	#ifdef _WIN32
102		101
103	#undef PAGESIZE	102	#undef PAGESIZE
104	#define PAGESIZE 4096 /* GetSystemInfo? */	103	#define PAGESIZE 4096 /* GetSystemInfo? */
105		104
		105	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		106
106	#ifdef EIO_STRUCT_STATI64	107	#ifdef EIO_STRUCT_STATI64
		108	/* look at perl's non-sloppy stat */
107	#define stat(path,buf) _stati64 (path,buf)	109	#define stat(path,buf) _stati64 (path,buf)
108	#define fstat(fd,buf) _fstati64 (path,buf)	110	#define fstat(fd,buf) _fstati64 (fd,buf)
109	#endif	111	#endif
110	#define lstat(path,buf) stat (path,buf)	112	#define lstat(path,buf) stat (path,buf)
111	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))	113	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
112	#define mkdir(path,mode) _mkdir (path)	114	#define mkdir(path,mode) _mkdir (path)
113	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))	115	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
114		116
115	#define chmod(path,mode) _chmod (path, mode)	117	#define chmod(path,mode) _chmod (path, mode)
116	#define dup(fd) _dup (fd)	118	#define dup(fd) _dup (fd)
117	#define dup2(fd1,fd2) _dup2 (fd1, fd2)	119	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		120	#define pipe(fds) _pipe (fds, 4096, O_BINARY)
118		121
		122	#define fcntl(fd,cmd,arg) EIO_ENOSYS ()
		123	#define ioctl(fd,cmd,arg) EIO_ENOSYS ()
119	#define fchmod(fd,mode) EIO_ENOSYS ()	124	#define fchmod(fd,mode) EIO_ENOSYS ()
120	#define chown(path,uid,gid) EIO_ENOSYS ()	125	#define chown(path,uid,gid) EIO_ENOSYS ()
121	#define fchown(fd,uid,gid) EIO_ENOSYS ()	126	#define fchown(fd,uid,gid) EIO_ENOSYS ()
122	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	127	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
123	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	128	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
…		…
125	#define sync() EIO_ENOSYS ()	130	#define sync() EIO_ENOSYS ()
126	#define readlink(path,buf,s) EIO_ENOSYS ()	131	#define readlink(path,buf,s) EIO_ENOSYS ()
127	#define statvfs(path,buf) EIO_ENOSYS ()	132	#define statvfs(path,buf) EIO_ENOSYS ()
128	#define fstatvfs(fd,buf) EIO_ENOSYS ()	133	#define fstatvfs(fd,buf) EIO_ENOSYS ()
129		134
		135	#define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
		136	#define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
		137
		138	#if __GNUC__
		139	typedef long long eio_off_t; /* signed for compatibility to msvc */
		140	#else
		141	typedef __int64 eio_off_t; /* unsigned not supported by msvc */
		142	#endif
		143
		144	static eio_ssize_t
		145	eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		146	{
		147	OVERLAPPED o = { 0 };
		148	DWORD got;
		149
		150	o.Offset = offset;
		151	o.OffsetHigh = offset >> 32;
		152
		153	return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		154	? got : -1;
		155	}
		156
		157	static eio_ssize_t
		158	eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		159	{
		160	OVERLAPPED o = { 0 };
		161	DWORD got;
		162
		163	o.Offset = offset;
		164	o.OffsetHigh = offset >> 32;
		165
		166	return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		167	? got : -1;
		168	}
		169
		170	/* rename() uses MoveFile, which fails to overwrite */
		171	#define rename(old,neu) eio__rename (old, neu)
		172
		173	static int
		174	eio__rename (const char *old, const char *neu)
		175	{
		176	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		177	return 0;
		178
		179	/* should steal _dosmaperr */
		180	switch (GetLastError ())
		181	{
		182	case ERROR_FILE_NOT_FOUND:
		183	case ERROR_PATH_NOT_FOUND:
		184	case ERROR_INVALID_DRIVE:
		185	case ERROR_NO_MORE_FILES:
		186	case ERROR_BAD_NETPATH:
		187	case ERROR_BAD_NET_NAME:
		188	case ERROR_BAD_PATHNAME:
		189	case ERROR_FILENAME_EXCED_RANGE:
		190	errno = ENOENT;
		191	break;
		192
		193	default:
		194	errno = EACCES;
		195	break;
		196	}
		197
		198	return -1;
		199	}
		200
130	/* we could even stat and see if it exists */	201	/* we could even stat and see if it exists */
131	static int	202	static int
132	symlink (const char *old, const char *neu)	203	symlink (const char *old, const char *neu)
133	{	204	{
134	#if WINVER >= 0x0600	205	#if WINVER >= 0x0600
		206	int flags;
		207
		208	/* This tries out all combinations of SYMBOLIC_LINK_FLAG_DIRECTORY
		209	* and SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE,
		210	* with directory first.
		211	*/
		212	for (flags = 3; flags >= 0; --flags)
135	if (CreateSymbolicLink (neu, old, 1))	213	if (CreateSymbolicLink (neu, old, flags))
136	return 0;	214	return 0;
137
138	if (CreateSymbolicLink (neu, old, 0))
139	return 0;
140	#endif	215	#endif
141		216
142	return EIO_ERRNO (ENOENT, -1);	217	return EIO_ERRNO (ENOENT, -1);
143	}	218	}
144		219
145	/* POSIX API only */	220	/* POSIX API only, causing trouble for win32 apps */
146	#define CreateHardLink(neu,old,flags) 0	221	#define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
147	#define CreateSymbolicLink(neu,old,flags) 0	222	#define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
148		223
149	struct statvfs	224	struct statvfs
150	{	225	{
151	int dummy;	226	int dummy;
152	};	227	};
…		…
158		233
159	#else	234	#else
160		235
161	#include <sys/time.h>	236	#include <sys/time.h>
162	#include <sys/select.h>	237	#include <sys/select.h>
163	#include <sys/statvfs.h>
164	#include <unistd.h>	238	#include <unistd.h>
165	#include <utime.h>
166	#include <signal.h>	239	#include <signal.h>
167	#include <dirent.h>	240	#include <dirent.h>
		241
		242	#ifdef ANDROID
		243	#include <sys/vfs.h>
		244	#define statvfs statfs
		245	#define fstatvfs fstatfs
		246	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
		247	#else
		248	#include <sys/statvfs.h>
		249	#endif
168		250
169	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	251	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
170	#include <sys/mman.h>	252	#include <sys/mman.h>
171	#endif	253	#endif
172		254
173	#define D_NAME(entp) entp->d_name	255	#define D_NAME(entp) entp->d_name
174		256
175	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	257	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
176	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	258	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
177	#define _DIRENT_HAVE_D_TYPE /* sigh */	259	#define _DIRENT_HAVE_D_TYPE /* sigh */
178	#define D_INO(de) (de)->d_fileno	260	#define D_INO(de) (de)->d_fileno
179	#define D_NAMLEN(de) (de)->d_namlen	261	#define D_NAMLEN(de) (de)->d_namlen
180	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	262	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
181	#define D_INO(de) (de)->d_ino	263	#define D_INO(de) (de)->d_ino
…		…
192		274
193	#ifndef EIO_STRUCT_DIRENT	275	#ifndef EIO_STRUCT_DIRENT
194	#define EIO_STRUCT_DIRENT struct dirent	276	#define EIO_STRUCT_DIRENT struct dirent
195	#endif	277	#endif
196		278
		279	#endif
		280
		281	#if HAVE_UTIMES
		282	# include <utime.h>
		283	#endif
		284
		285	#if HAVE_SYS_SYSCALL_H
		286	# include <sys/syscall.h>
197	#endif	287	#endif
198		288
199	#if HAVE_SENDFILE	289	#if HAVE_SENDFILE
200	# if __linux	290	# if __linux
201	# include <sys/sendfile.h>	291	# include <sys/sendfile.h>
…		…
232	#endif	322	#endif
233		323
234	/* buffer size for various temporary buffers */	324	/* buffer size for various temporary buffers */
235	#define EIO_BUFSIZE 65536	325	#define EIO_BUFSIZE 65536
236		326
237	#define dBUF \	327	#define dBUF \
238	char *eio_buf; \
239	ETP_WORKER_LOCK (self); \
240	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	328	char *eio_buf = malloc (EIO_BUFSIZE); \
241	ETP_WORKER_UNLOCK (self); \
242	errno = ENOMEM; \	329	errno = ENOMEM; \
243	if (!eio_buf) \	330	if (!eio_buf) \
244	return -1;	331	return -1
245		332
246	#define EIO_TICKS ((1000000 + 1023) >> 10)	333	#define FUBd \
		334	free (eio_buf)
		335
		336	/*****************************************************************************/
		337
		338	struct etp_tmpbuf;
		339
		340	#if _POSIX_VERSION >= 200809L
		341	#define HAVE_AT 1
		342	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		343	#ifndef O_SEARCH
		344	#define O_SEARCH O_RDONLY
		345	#endif
		346	#else
		347	#define HAVE_AT 0
		348	static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
		349	#endif
		350
		351	struct eio_pwd
		352	{
		353	#if HAVE_AT
		354	int fd;
		355	#endif
		356	int len;
		357	char str[1]; /* actually, a 0-terminated canonical path */
		358	};
		359
		360	/*****************************************************************************/
247		361
248	#define ETP_PRI_MIN EIO_PRI_MIN	362	#define ETP_PRI_MIN EIO_PRI_MIN
249	#define ETP_PRI_MAX EIO_PRI_MAX	363	#define ETP_PRI_MAX EIO_PRI_MAX
250		364
		365	#define ETP_TYPE_QUIT -1
		366	#define ETP_TYPE_GROUP EIO_GROUP
		367
		368	static void eio_nop_callback (void) { }
		369	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		370	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		371
		372	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		373	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		374
251	struct etp_worker;	375	struct etp_worker;
252
253	#define ETP_REQ eio_req	376	#define ETP_REQ eio_req
254	#define ETP_DESTROY(req) eio_destroy (req)	377	#define ETP_DESTROY(req) eio_destroy (req)
255	static int eio_finish (eio_req *req);	378	static int eio_finish (eio_req *req);
256	#define ETP_FINISH(req) eio_finish (req)	379	#define ETP_FINISH(req) eio_finish (req)
257	static void eio_execute (struct etp_worker *self, eio_req *req);	380	static void eio_execute (struct etp_worker *self, eio_req *req);
258	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	381	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
259		382
260	#define ETP_WORKER_CLEAR(req) \	383	#include "etp.c"
261	if (wrk->dbuf) \
262	{ \
263	free (wrk->dbuf); \
264	wrk->dbuf = 0; \
265	}
266		384
267	#define ETP_WORKER_COMMON \	385	static struct etp_pool eio_pool;
268	void *dbuf;	386	#define EIO_POOL (&eio_pool)
269
270	/*****************************************************************************/
271
272	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
273
274	/* calculate time difference in ~1/EIO_TICKS of a second */
275	ecb_inline int
276	tvdiff (struct timeval *tv1, struct timeval *tv2)
277	{
278	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
279	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
280	}
281
282	static unsigned int started, idle, wanted = 4;
283
284	static void (*want_poll_cb) (void);
285	static void (*done_poll_cb) (void);
286
287	static unsigned int max_poll_time; /* reslock */
288	static unsigned int max_poll_reqs; /* reslock */
289
290	static volatile unsigned int nreqs; /* reqlock */
291	static volatile unsigned int nready; /* reqlock */
292	static volatile unsigned int npending; /* reqlock */
293	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
294	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
295
296	static xmutex_t wrklock;
297	static xmutex_t reslock;
298	static xmutex_t reqlock;
299	static xcond_t reqwait;
300
301	#if !HAVE_PREADWRITE
302	/*
303	* make our pread/pwrite emulation safe against themselves, but not against
304	* normal read/write by using a mutex. slows down execution a lot,
305	* but that's your problem, not mine.
306	*/
307	static xmutex_t preadwritelock = X_MUTEX_INIT;
308	#endif
309
310	typedef struct etp_worker
311	{
312	/* locked by wrklock */
313	struct etp_worker *prev, *next;
314
315	xthread_t tid;
316
317	/* locked by reslock, reqlock or wrklock */
318	ETP_REQ *req; /* currently processed request */
319
320	ETP_WORKER_COMMON
321	} etp_worker;
322
323	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
324
325	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
326	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
327
328	/* worker threads management */
329
330	static void ecb_cold
331	etp_worker_clear (etp_worker *wrk)
332	{
333	ETP_WORKER_CLEAR (wrk);
334	}
335
336	static void ecb_cold
337	etp_worker_free (etp_worker *wrk)
338	{
339	wrk->next->prev = wrk->prev;
340	wrk->prev->next = wrk->next;
341
342	free (wrk);
343	}
344
345	static unsigned int
346	etp_nreqs (void)
347	{
348	int retval;
349	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
350	retval = nreqs;
351	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
352	return retval;
353	}
354
355	static unsigned int
356	etp_nready (void)
357	{
358	unsigned int retval;
359
360	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
361	retval = nready;
362	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
363
364	return retval;
365	}
366
367	static unsigned int
368	etp_npending (void)
369	{
370	unsigned int retval;
371
372	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
373	retval = npending;
374	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
375
376	return retval;
377	}
378
379	static unsigned int
380	etp_nthreads (void)
381	{
382	unsigned int retval;
383
384	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
385	retval = started;
386	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
387
388	return retval;
389	}
390
391	/*
392	* a somewhat faster data structure might be nice, but
393	* with 8 priorities this actually needs <20 insns
394	* per shift, the most expensive operation.
395	*/
396	typedef struct {
397	ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
398	int size;
399	} etp_reqq;
400
401	static etp_reqq req_queue;
402	static etp_reqq res_queue;
403
404	static void ecb_noinline ecb_cold
405	reqq_init (etp_reqq *q)
406	{
407	int pri;
408
409	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
410	q->qs[pri] = q->qe[pri] = 0;
411
412	q->size = 0;
413	}
414
415	static int ecb_noinline
416	reqq_push (etp_reqq *q, ETP_REQ *req)
417	{
418	int pri = req->pri;
419	req->next = 0;
420
421	if (q->qe[pri])
422	{
423	q->qe[pri]->next = req;
424	q->qe[pri] = req;
425	}
426	else
427	q->qe[pri] = q->qs[pri] = req;
428
429	return q->size++;
430	}
431
432	static ETP_REQ * ecb_noinline
433	reqq_shift (etp_reqq *q)
434	{
435	int pri;
436
437	if (!q->size)
438	return 0;
439
440	--q->size;
441
442	for (pri = ETP_NUM_PRI; pri--; )
443	{
444	eio_req *req = q->qs[pri];
445
446	if (req)
447	{
448	if (!(q->qs[pri] = (eio_req *)req->next))
449	q->qe[pri] = 0;
450
451	return req;
452	}
453	}
454
455	abort ();
456	}
457
458	static void ecb_cold
459	etp_thread_init (void)
460	{
461	#if !HAVE_PREADWRITE
462	X_MUTEX_CREATE (preadwritelock);
463	#endif
464	X_MUTEX_CREATE (wrklock);
465	X_MUTEX_CREATE (reslock);
466	X_MUTEX_CREATE (reqlock);
467	X_COND_CREATE (reqwait);
468	}
469
470	static void ecb_cold
471	etp_atfork_child (void)
472	{
473	reqq_init (&req_queue);
474	reqq_init (&res_queue);
475
476	wrk_first.next =
477	wrk_first.prev = &wrk_first;
478
479	started = 0;
480	idle = 0;
481	nreqs = 0;
482	nready = 0;
483	npending = 0;
484
485	etp_thread_init ();
486	}
487
488	static void ecb_cold
489	etp_once_init (void)
490	{
491	etp_thread_init ();
492	X_THREAD_ATFORK (0, 0, etp_atfork_child);
493	}
494
495	static int ecb_cold
496	etp_init (void (*want_poll)(void), void (*done_poll)(void))
497	{
498	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
499
500	pthread_once (&doinit, etp_once_init);
501
502	want_poll_cb = want_poll;
503	done_poll_cb = done_poll;
504
505	return 0;
506	}
507
508	X_THREAD_PROC (etp_proc);
509
510	static void ecb_cold
511	etp_start_thread (void)
512	{
513	etp_worker *wrk = calloc (1, sizeof (etp_worker));
514
515	/*TODO*/
516	assert (("unable to allocate worker thread data", wrk));
517
518	X_LOCK (wrklock);
519
520	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
521	{
522	wrk->prev = &wrk_first;
523	wrk->next = wrk_first.next;
524	wrk_first.next->prev = wrk;
525	wrk_first.next = wrk;
526	++started;
527	}
528	else
529	free (wrk);
530
531	X_UNLOCK (wrklock);
532	}
533
534	static void
535	etp_maybe_start_thread (void)
536	{
537	if (ecb_expect_true (etp_nthreads () >= wanted))
538	return;
539
540	/* todo: maybe use idle here, but might be less exact */
541	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
542	return;
543
544	etp_start_thread ();
545	}
546
547	static void ecb_cold
548	etp_end_thread (void)
549	{
550	eio_req *req = calloc (1, sizeof (eio_req));
551
552	req->type = -1;
553	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
554
555	X_LOCK (reqlock);
556	reqq_push (&req_queue, req);
557	X_COND_SIGNAL (reqwait);
558	X_UNLOCK (reqlock);
559
560	X_LOCK (wrklock);
561	--started;
562	X_UNLOCK (wrklock);
563	}
564
565	static int
566	etp_poll (void)
567	{
568	unsigned int maxreqs;
569	unsigned int maxtime;
570	struct timeval tv_start, tv_now;
571
572	X_LOCK (reslock);
573	maxreqs = max_poll_reqs;
574	maxtime = max_poll_time;
575	X_UNLOCK (reslock);
576
577	if (maxtime)
578	gettimeofday (&tv_start, 0);
579
580	for (;;)
581	{
582	ETP_REQ *req;
583
584	etp_maybe_start_thread ();
585
586	X_LOCK (reslock);
587	req = reqq_shift (&res_queue);
588
589	if (req)
590	{
591	--npending;
592
593	if (!res_queue.size && done_poll_cb)
594	done_poll_cb ();
595	}
596
597	X_UNLOCK (reslock);
598
599	if (!req)
600	return 0;
601
602	X_LOCK (reqlock);
603	--nreqs;
604	X_UNLOCK (reqlock);
605
606	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
607	{
608	req->int1 = 1; /* mark request as delayed */
609	continue;
610	}
611	else
612	{
613	int res = ETP_FINISH (req);
614	if (ecb_expect_false (res))
615	return res;
616	}
617
618	if (ecb_expect_false (maxreqs && !--maxreqs))
619	break;
620
621	if (maxtime)
622	{
623	gettimeofday (&tv_now, 0);
624
625	if (tvdiff (&tv_start, &tv_now) >= maxtime)
626	break;
627	}
628	}
629
630	errno = EAGAIN;
631	return -1;
632	}
633
634	static void
635	etp_cancel (ETP_REQ *req)
636	{
637	req->cancelled = 1;
638
639	eio_grp_cancel (req);
640	}
641
642	static void
643	etp_submit (ETP_REQ *req)
644	{
645	req->pri -= ETP_PRI_MIN;
646
647	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
648	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
649
650	if (ecb_expect_false (req->type == EIO_GROUP))
651	{
652	/* I hope this is worth it :/ */
653	X_LOCK (reqlock);
654	++nreqs;
655	X_UNLOCK (reqlock);
656
657	X_LOCK (reslock);
658
659	++npending;
660
661	if (!reqq_push (&res_queue, req) && want_poll_cb)
662	want_poll_cb ();
663
664	X_UNLOCK (reslock);
665	}
666	else
667	{
668	X_LOCK (reqlock);
669	++nreqs;
670	++nready;
671	reqq_push (&req_queue, req);
672	X_COND_SIGNAL (reqwait);
673	X_UNLOCK (reqlock);
674
675	etp_maybe_start_thread ();
676	}
677	}
678
679	static void ecb_cold
680	etp_set_max_poll_time (double nseconds)
681	{
682	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
683	max_poll_time = nseconds * EIO_TICKS;
684	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
685	}
686
687	static void ecb_cold
688	etp_set_max_poll_reqs (unsigned int maxreqs)
689	{
690	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
691	max_poll_reqs = maxreqs;
692	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
693	}
694
695	static void ecb_cold
696	etp_set_max_idle (unsigned int nthreads)
697	{
698	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
699	max_idle = nthreads;
700	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
701	}
702
703	static void ecb_cold
704	etp_set_idle_timeout (unsigned int seconds)
705	{
706	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
707	idle_timeout = seconds;
708	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
709	}
710
711	static void ecb_cold
712	etp_set_min_parallel (unsigned int nthreads)
713	{
714	if (wanted < nthreads)
715	wanted = nthreads;
716	}
717
718	static void ecb_cold
719	etp_set_max_parallel (unsigned int nthreads)
720	{
721	if (wanted > nthreads)
722	wanted = nthreads;
723
724	while (started > wanted)
725	etp_end_thread ();
726	}
727		387
728	/*****************************************************************************/	388	/*****************************************************************************/
729		389
730	static void	390	static void
731	grp_try_feed (eio_req *grp)	391	grp_try_feed (eio_req *grp)
732	{	392	{
733	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	393	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
734	{	394	{
735	grp->flags &= ~EIO_FLAG_GROUPADD;	395	grp->flags &= ~ETP_FLAG_GROUPADD;
736		396
737	EIO_FEED (grp);	397	EIO_FEED (grp);
738		398
739	/* stop if no progress has been made */	399	/* stop if no progress has been made */
740	if (!(grp->flags & EIO_FLAG_GROUPADD))	400	if (!(grp->flags & ETP_FLAG_GROUPADD))
741	{	401	{
742	grp->feed = 0;	402	grp->feed = 0;
743	break;	403	break;
744	}	404	}
745	}	405	}
…		…
752		412
753	/* call feeder, if applicable */	413	/* call feeder, if applicable */
754	grp_try_feed (grp);	414	grp_try_feed (grp);
755		415
756	/* finish, if done */	416	/* finish, if done */
757	if (!grp->size && grp->int1)	417	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
758	return eio_finish (grp);	418	return eio_finish (grp);
759	else	419	else
760	return 0;	420	return 0;
761	}	421	}
762		422
…		…
798	}	458	}
799		459
800	void	460	void
801	eio_grp_cancel (eio_req *grp)	461	eio_grp_cancel (eio_req *grp)
802	{	462	{
803	for (grp = grp->grp_first; grp; grp = grp->grp_next)	463	etp_grp_cancel (EIO_POOL, grp);
804	eio_cancel (grp);
805	}	464	}
806		465
807	void	466	void
808	eio_cancel (eio_req *req)	467	eio_cancel (eio_req *req)
809	{	468	{
810	etp_cancel (req);	469	etp_cancel (EIO_POOL, req);
811	}	470	}
812		471
813	void	472	void
814	eio_submit (eio_req *req)	473	eio_submit (eio_req *req)
815	{	474	{
816	etp_submit (req);	475	etp_submit (EIO_POOL, req);
817	}	476	}
818		477
819	unsigned int	478	unsigned int
820	eio_nreqs (void)	479	eio_nreqs (void)
821	{	480	{
822	return etp_nreqs ();	481	return etp_nreqs (EIO_POOL);
823	}	482	}
824		483
825	unsigned int	484	unsigned int
826	eio_nready (void)	485	eio_nready (void)
827	{	486	{
828	return etp_nready ();	487	return etp_nready (EIO_POOL);
829	}	488	}
830		489
831	unsigned int	490	unsigned int
832	eio_npending (void)	491	eio_npending (void)
833	{	492	{
834	return etp_npending ();	493	return etp_npending (EIO_POOL);
835	}	494	}
836		495
837	unsigned int ecb_cold	496	unsigned int ecb_cold
838	eio_nthreads (void)	497	eio_nthreads (void)
839	{	498	{
840	return etp_nthreads ();	499	return etp_nthreads (EIO_POOL);
841	}	500	}
842		501
843	void ecb_cold	502	void ecb_cold
844	eio_set_max_poll_time (double nseconds)	503	eio_set_max_poll_time (double nseconds)
845	{	504	{
846	etp_set_max_poll_time (nseconds);	505	etp_set_max_poll_time (EIO_POOL, nseconds);
847	}	506	}
848		507
849	void ecb_cold	508	void ecb_cold
850	eio_set_max_poll_reqs (unsigned int maxreqs)	509	eio_set_max_poll_reqs (unsigned int maxreqs)
851	{	510	{
852	etp_set_max_poll_reqs (maxreqs);	511	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
853	}	512	}
854		513
855	void ecb_cold	514	void ecb_cold
856	eio_set_max_idle (unsigned int nthreads)	515	eio_set_max_idle (unsigned int nthreads)
857	{	516	{
858	etp_set_max_idle (nthreads);	517	etp_set_max_idle (EIO_POOL, nthreads);
859	}	518	}
860		519
861	void ecb_cold	520	void ecb_cold
862	eio_set_idle_timeout (unsigned int seconds)	521	eio_set_idle_timeout (unsigned int seconds)
863	{	522	{
864	etp_set_idle_timeout (seconds);	523	etp_set_idle_timeout (EIO_POOL, seconds);
865	}	524	}
866		525
867	void ecb_cold	526	void ecb_cold
868	eio_set_min_parallel (unsigned int nthreads)	527	eio_set_min_parallel (unsigned int nthreads)
869	{	528	{
870	etp_set_min_parallel (nthreads);	529	etp_set_min_parallel (EIO_POOL, nthreads);
871	}	530	}
872		531
873	void ecb_cold	532	void ecb_cold
874	eio_set_max_parallel (unsigned int nthreads)	533	eio_set_max_parallel (unsigned int nthreads)
875	{	534	{
876	etp_set_max_parallel (nthreads);	535	etp_set_max_parallel (EIO_POOL, nthreads);
877	}	536	}
878		537
879	int eio_poll (void)	538	int eio_poll (void)
880	{	539	{
881	return etp_poll ();	540	return etp_poll (EIO_POOL);
882	}	541	}
883		542
884	/*****************************************************************************/	543	/*****************************************************************************/
885	/* work around various missing functions */	544	/* work around various missing functions */
886
887	#if !HAVE_PREADWRITE
888	# undef pread
889	# undef pwrite
890	# define pread eio__pread
891	# define pwrite eio__pwrite
892
893	static eio_ssize_t
894	eio__pread (int fd, void *buf, size_t count, off_t offset)
895	{
896	eio_ssize_t res;
897	off_t ooffset;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}
908
909	static eio_ssize_t
910	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
911	{
912	eio_ssize_t res;
913	off_t ooffset;
914
915	X_LOCK (preadwritelock);
916	ooffset = lseek (fd, 0, SEEK_CUR);
917	lseek (fd, offset, SEEK_SET);
918	res = write (fd, buf, count);
919	lseek (fd, ooffset, SEEK_SET);
920	X_UNLOCK (preadwritelock);
921
922	return res;
923	}
924	#endif
925		545
926	#ifndef HAVE_UTIMES	546	#ifndef HAVE_UTIMES
927		547
928	# undef utimes	548	# undef utimes
929	# define utimes(path,times) eio__utimes (path, times)	549	# define utimes(path,times) eio__utimes (path, times)
…		…
962		582
963	#if !HAVE_FDATASYNC	583	#if !HAVE_FDATASYNC
964	# undef fdatasync	584	# undef fdatasync
965	# define fdatasync(fd) fsync (fd)	585	# define fdatasync(fd) fsync (fd)
966	#endif	586	#endif
		587
		588	static int
		589	eio__syncfs (int fd)
		590	{
		591	int res;
		592
		593	#if HAVE_SYS_SYNCFS
		594	res = (int)syscall (__NR_syncfs, (int)(fd));
		595	#else
		596	res = EIO_ENOSYS ();
		597	#endif
		598
		599	if (res < 0 && errno == ENOSYS && fd >= 0)
		600	sync ();
		601
		602	return res;
		603	}
967		604
968	/* sync_file_range always needs emulation */	605	/* sync_file_range always needs emulation */
969	static int	606	static int
970	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	607	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
971	{	608	{
…		…
994	}	631	}
995		632
996	static int	633	static int
997	eio__fallocate (int fd, int mode, off_t offset, size_t len)	634	eio__fallocate (int fd, int mode, off_t offset, size_t len)
998	{	635	{
999	#if HAVE_FALLOCATE	636	#if HAVE_LINUX_FALLOCATE
1000	return fallocate (fd, mode, offset, len);	637	return fallocate (fd, mode, offset, len);
1001	#else	638	#else
1002	errno = ENOSYS;	639	return EIO_ENOSYS ();
1003	return -1;
1004	#endif	640	#endif
1005	}	641	}
1006		642
1007	#if !HAVE_READAHEAD	643	#if !HAVE_READAHEAD
1008	# undef readahead	644	# undef readahead
…		…
1021	pread (fd, eio_buf, len, offset);	657	pread (fd, eio_buf, len, offset);
1022	offset += len;	658	offset += len;
1023	todo -= len;	659	todo -= len;
1024	}	660	}
1025		661
1026	errno = 0;	662	FUBd;
		663
		664	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		665	/* but not for e.g. EIO or eof, so we also never fail */
1027	return count;	666	return 0;
1028	}	667	}
1029		668
1030	#endif	669	#endif
1031		670
1032	/* sendfile always needs emulation */	671	/* sendfile always needs emulation */
1033	static eio_ssize_t	672	static eio_ssize_t
1034	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	673	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
1035	{	674	{
1036	eio_ssize_t written = 0;	675	eio_ssize_t written = 0;
1037	eio_ssize_t res;	676	eio_ssize_t res;
1038		677
1039	if (!count)	678	if (!count)
…		…
1067		706
1068	/* according to source inspection, this is correct, and useful behaviour */	707	/* according to source inspection, this is correct, and useful behaviour */
1069	if (sbytes)	708	if (sbytes)
1070	res = sbytes;	709	res = sbytes;
1071		710
1072	# elif defined (__APPLE__)	711	# elif defined __APPLE__
1073	off_t sbytes = count;	712	off_t sbytes = count;
1074	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	713	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1075		714
1076	/* according to the manpage, sbytes is always valid */	715	/* according to the manpage, sbytes is always valid */
1077	if (sbytes)	716	if (sbytes)
…		…
1104	HANDLE h = TO_SOCKET (ifd);	743	HANDLE h = TO_SOCKET (ifd);
1105	SetFilePointer (h, offset, 0, FILE_BEGIN);	744	SetFilePointer (h, offset, 0, FILE_BEGIN);
1106	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	745	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1107		746
1108	#else	747	#else
1109	res = -1;	748	res = EIO_ENOSYS ();
1110	errno = ENOSYS;
1111	#endif	749	#endif
1112		750
1113	/* we assume sendfile can copy at least 128mb in one go */	751	/* we assume sendfile can copy at least 128mb in one go */
1114	if (res <= 128 * 1024 * 1024)	752	if (res <= 128 * 1024 * 1024)
1115	{	753	{
…		…
1175		813
1176	offset += cnt;	814	offset += cnt;
1177	res += cnt;	815	res += cnt;
1178	count -= cnt;	816	count -= cnt;
1179	}	817	}
		818
		819	FUBd;
1180	}	820	}
1181		821
1182	return res;	822	return res;
1183	}	823	}
1184		824
…		…
1300		940
1301	/*****************************************************************************/	941	/*****************************************************************************/
1302	/* requests implemented outside eio_execute, because they are so large */	942	/* requests implemented outside eio_execute, because they are so large */
1303		943
1304	static void	944	static void
1305	eio__realpath (eio_req *req, etp_worker *self)	945	eio__lseek (eio_req *req)
1306	{	946	{
1307	char *rel = req->ptr1;	947	/* this usually gets optimised away completely, or your compiler sucks, */
		948	/* or the whence constants really are not 0, 1, 2 */
		949	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		950	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		951	: req->int2 == EIO_SEEK_END ? SEEK_END
		952	: req->int2;
		953
		954	req->offs = lseek (req->int1, req->offs, whence);
		955	req->result = req->offs == (off_t)-1 ? -1 : 0;
		956	}
		957
		958	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		959	static int
		960	eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		961	{
1308	char *res;	962	char *res;
		963	const char *rel = path;
1309	char *tmp1, *tmp2;	964	char *tmp1, *tmp2;
1310	#if SYMLOOP_MAX > 32	965	#if SYMLOOP_MAX > 32
1311	int symlinks = SYMLOOP_MAX;	966	int symlinks = SYMLOOP_MAX;
1312	#else	967	#else
1313	int symlinks = 32;	968	int symlinks = 32;
1314	#endif	969	#endif
1315		970
1316	req->result = -1;
1317
1318	errno = EINVAL;	971	errno = EINVAL;
1319	if (!rel)	972	if (!rel)
1320	return;	973	return -1;
1321		974
1322	errno = ENOENT;	975	errno = ENOENT;
1323	if (!*rel)	976	if (!*rel)
1324	return;	977	return -1;
1325		978
1326	if (!req->ptr2)	979	res = etp_tmpbuf_get (tmpbuf, PATH_MAX * 3);
1327	{	980	#ifdef _WIN32
1328	X_LOCK (wrklock);	981	if (_access (rel, 4) != 0)
1329	req->flags |= EIO_FLAG_PTR2_FREE;
1330	X_UNLOCK (wrklock);
1331	req->ptr2 = malloc (PATH_MAX * 3);
1332
1333	errno = ENOMEM;
1334	if (!req->ptr2)
1335	return;	982	return -1;
1336	}
1337		983
1338	res = req->ptr2;	984	symlinks = GetFullPathName (rel, PATH_MAX * 3, res, 0);
		985
		986	errno = ENAMETOOLONG;
		987	if (symlinks >= PATH_MAX * 3)
		988	return -1;
		989
		990	errno = EIO;
		991	if (symlinks <= 0)
		992	return -1;
		993
		994	return symlinks;
		995
		996	#else
1339	tmp1 = res + PATH_MAX;	997	tmp1 = res + PATH_MAX;
1340	tmp2 = tmp1 + PATH_MAX;	998	tmp2 = tmp1 + PATH_MAX;
1341		999
1342	#if 0 /* disabled, the musl way to do things is just too racy */	1000	#if 0 /* disabled, the musl way to do things is just too racy */
1343	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1001	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1347		1005
1348	if (fd >= 0)	1006	if (fd >= 0)
1349	{	1007	{
1350	sprintf (tmp1, "/proc/self/fd/%d", fd);	1008	sprintf (tmp1, "/proc/self/fd/%d", fd);
1351	req->result = readlink (tmp1, res, PATH_MAX);	1009	req->result = readlink (tmp1, res, PATH_MAX);
		1010	/* here we should probably stat the open file and the disk file, to make sure they still match */
1352	close (fd);	1011	close (fd);
1353
1354	/* here we should probably stat the open file and the disk file, to make sure they still match */
1355		1012
1356	if (req->result > 0)	1013	if (req->result > 0)
1357	goto done;	1014	goto done;
1358	}	1015	}
1359	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)	1016	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1360	return;	1017	return -1;
1361	}	1018	}
1362	#endif	1019	#endif
1363	#endif	1020	#endif
1364		1021
1365	if (*rel != '/')	1022	if (*rel != '/')
1366	{	1023	{
		1024	int len;
		1025
		1026	errno = ENOENT;
		1027	if (wd == EIO_INVALID_WD)
		1028	return -1;
		1029
		1030	if (wd == EIO_CWD)
		1031	{
1367	if (!getcwd (res, PATH_MAX))	1032	if (!getcwd (res, PATH_MAX))
1368	return;	1033	return -1;
		1034
		1035	len = strlen (res);
		1036	}
		1037	else
		1038	memcpy (res, wd->str, len = wd->len);
1369		1039
1370	if (res [1]) /* only use if not / */	1040	if (res [1]) /* only use if not / */
1371	res += strlen (res);	1041	res += len;
1372	}	1042	}
1373		1043
1374	while (*rel)	1044	while (*rel)
1375	{	1045	{
1376	eio_ssize_t len, linklen;	1046	eio_ssize_t len, linklen;
1377	char *beg = rel;	1047	const char *beg = rel;
1378		1048
1379	while (*rel && *rel != '/')	1049	while (*rel && *rel != '/')
1380	++rel;	1050	++rel;
1381		1051
1382	len = rel - beg;	1052	len = rel - beg;
…		…
1394		1064
1395	if (beg [1] == '.' && len == 2)	1065	if (beg [1] == '.' && len == 2)
1396	{	1066	{
1397	/* .. - back up one component, if possible */	1067	/* .. - back up one component, if possible */
1398		1068
1399	while (res != req->ptr2)	1069	while (res != tmpbuf->ptr)
1400	if (*--res == '/')	1070	if (*--res == '/')
1401	break;	1071	break;
1402		1072
1403	continue;	1073	continue;
1404	}	1074	}
1405	}	1075	}
1406		1076
1407	errno = ENAMETOOLONG;	1077	errno = ENAMETOOLONG;
1408	if (res + 1 + len + 1 >= tmp1)	1078	if (res + 1 + len + 1 >= tmp1)
1409	return;	1079	return -1;
1410		1080
1411	/* copy one component */	1081	/* copy one component */
1412	*res = '/';	1082	*res = '/';
1413	memcpy (res + 1, beg, len);	1083	memcpy (res + 1, beg, len);
1414		1084
1415	/* zero-terminate, for readlink */	1085	/* zero-terminate, for readlink */
1416	res [len + 1] = 0;	1086	res [len + 1] = 0;
1417		1087
1418	/* now check if it's a symlink */	1088	/* now check if it's a symlink */
1419	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1089	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1420		1090
1421	if (linklen < 0)	1091	if (linklen < 0)
1422	{	1092	{
1423	if (errno != EINVAL)	1093	if (errno != EINVAL)
1424	return;	1094	return -1;
1425		1095
1426	/* it's a normal directory. hopefully */	1096	/* it's a normal directory. hopefully */
1427	res += len + 1;	1097	res += len + 1;
1428	}	1098	}
1429	else	1099	else
…		…
1431	/* yay, it was a symlink - build new path in tmp2 */	1101	/* yay, it was a symlink - build new path in tmp2 */
1432	int rellen = strlen (rel);	1102	int rellen = strlen (rel);
1433		1103
1434	errno = ENAMETOOLONG;	1104	errno = ENAMETOOLONG;
1435	if (linklen + 1 + rellen >= PATH_MAX)	1105	if (linklen + 1 + rellen >= PATH_MAX)
1436	return;	1106	return -1;
1437		1107
1438	errno = ELOOP;	1108	errno = ELOOP;
1439	if (!--symlinks)	1109	if (!--symlinks)
1440	return;	1110	return -1;
1441		1111
1442	if (*tmp1 == '/')	1112	if (*tmp1 == '/')
1443	res = req->ptr2; /* symlink resolves to an absolute path */	1113	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1444		1114
1445	/* we need to be careful, as rel might point into tmp2 already */	1115	/* we need to be careful, as rel might point into tmp2 already */
1446	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1116	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1447	tmp2 [linklen] = '/';	1117	tmp2 [linklen] = '/';
1448	memcpy (tmp2, tmp1, linklen);	1118	memcpy (tmp2, tmp1, linklen);
…		…
1450	rel = tmp2;	1120	rel = tmp2;
1451	}	1121	}
1452	}	1122	}
1453		1123
1454	/* special case for the lone root path */	1124	/* special case for the lone root path */
1455	if (res == req->ptr2)	1125	if (res == tmpbuf->ptr)
1456	*res++ = '/';	1126	*res++ = '/';
1457		1127
1458	req->result = res - (char *)req->ptr2;	1128	return res - (char *)tmpbuf->ptr;
1459		1129	#endif
1460	done:
1461	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1462	}	1130	}
1463		1131
1464	static signed char	1132	static signed char
1465	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1133	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1466	{	1134	{
…		…
1654	#ifdef _WIN32	1322	#ifdef _WIN32
1655	{	1323	{
1656	int len = strlen ((const char *)req->ptr1);	1324	int len = strlen ((const char *)req->ptr1);
1657	char *path = malloc (MAX_PATH);	1325	char *path = malloc (MAX_PATH);
1658	const char *fmt;	1326	const char *fmt;
		1327	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1659		1328
1660	if (!len)	1329	if (!len)
1661	fmt = "./*";	1330	fmt = "./*";
1662	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1331	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1663	fmt = "%s*";	1332	fmt = "%s*";
1664	else	1333	else
1665	fmt = "%s/*";	1334	fmt = "%s/*";
1666		1335
1667	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1336	_snprintf (path, MAX_PATH, fmt, reqpath);
1668	dirp = FindFirstFile (path, &entp);	1337	dirp = FindFirstFile (path, &entp);
1669	free (path);	1338	free (path);
1670		1339
1671	if (dirp == INVALID_HANDLE_VALUE)	1340	if (dirp == INVALID_HANDLE_VALUE)
1672	{	1341	{
1673	dirp = 0;	1342	/* should steal _dosmaperr */
1674
1675	switch (GetLastError ())	1343	switch (GetLastError ())
1676	{	1344	{
1677	case ERROR_FILE_NOT_FOUND:	1345	case ERROR_FILE_NOT_FOUND:
1678	req->result = 0;	1346	req->result = 0;
1679	break;	1347	break;
1680		1348
1681	case ERROR_INVALID_NAME:	1349	case ERROR_INVALID_NAME:
1682	case ERROR_PATH_NOT_FOUND:	1350	case ERROR_PATH_NOT_FOUND:
1683	case ERROR_NO_MORE_FILES:	1351	case ERROR_NO_MORE_FILES:
1684	errno = ENOENT;	1352	errno = ENOENT;
1685	break;	1353	break;
1686		1354
1687	case ERROR_NOT_ENOUGH_MEMORY:	1355	case ERROR_NOT_ENOUGH_MEMORY:
1688	errno = ENOMEM;	1356	errno = ENOMEM;
1689	break;	1357	break;
1690		1358
1691	default:	1359	default:
1692	errno = EINVAL;	1360	errno = EINVAL;
1693	break;	1361	break;
1694	}	1362	}
		1363
		1364	return;
1695	}	1365	}
1696	}	1366	}
1697	#else	1367	#else
		1368	#if HAVE_AT
		1369	if (req->wd)
		1370	{
		1371	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1372
		1373	if (fd < 0)
		1374	return;
		1375
		1376	dirp = fdopendir (fd);
		1377
		1378	if (!dirp)
		1379	close (fd);
		1380	}
		1381	else
1698	dirp = opendir (req->ptr1);	1382	dirp = opendir (req->ptr1);
		1383	#else
		1384	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1385	#endif
		1386
		1387	if (!dirp)
		1388	return;
1699	#endif	1389	#endif
1700		1390
1701	if (req->flags & EIO_FLAG_PTR1_FREE)	1391	if (req->flags & EIO_FLAG_PTR1_FREE)
1702	free (req->ptr1);	1392	free (req->ptr1);
1703		1393
1704	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1394	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1705	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1395	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1706	req->ptr2 = names = malloc (namesalloc);	1396	req->ptr2 = names = malloc (namesalloc);
1707		1397
1708	if (dirp && names && (!flags || dents))	1398	if (!names || (flags && !dents))
		1399	return;
		1400
1709	for (;;)	1401	for (;;)
1710	{	1402	{
1711	int done;	1403	int done;
1712		1404
1713	#ifdef _WIN32	1405	#ifdef _WIN32
1714	done = !dirp;	1406	done = !dirp;
1715	#else	1407	#else
1716	errno = 0;	1408	errno = 0;
1717	entp = readdir (dirp);	1409	entp = readdir (dirp);
1718	done = !entp;	1410	done = !entp;
1719	#endif	1411	#endif
1720		1412
1721	if (done)	1413	if (done)
1722	{	1414	{
1723	#ifndef _WIN32	1415	#ifndef _WIN32
1724	int old_errno = errno;	1416	int old_errno = errno;
1725	closedir (dirp);	1417	closedir (dirp);
1726	errno = old_errno;	1418	errno = old_errno;
1727		1419
1728	if (errno)	1420	if (errno)
1729	break;	1421	break;
1730	#endif	1422	#endif
1731		1423
1732	/* sort etc. */	1424	/* sort etc. */
1733	req->int1 = flags;	1425	req->int1 = flags;
1734	req->result = dentoffs;	1426	req->result = dentoffs;
1735		1427
1736	if (flags & EIO_READDIR_STAT_ORDER)	1428	if (flags & EIO_READDIR_STAT_ORDER)
1737	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);	1429	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1738	else if (flags & EIO_READDIR_DIRS_FIRST)	1430	else if (flags & EIO_READDIR_DIRS_FIRST)
1739	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1431	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1740	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1432	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1741	else	1433	else
		1434	{
		1435	/* in this case, all is known, and we just put dirs first and sort them */
		1436	eio_dirent *oth = dents + dentoffs;
		1437	eio_dirent *dir = dents;
		1438
		1439	/* now partition dirs to the front, and non-dirs to the back */
		1440	/* by walking from both sides and swapping if necessary */
		1441	while (oth > dir)
		1442	{
		1443	if (dir->type == EIO_DT_DIR)
		1444	++dir;
		1445	else if ((--oth)->type == EIO_DT_DIR)
		1446	{
		1447	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1448
		1449	++dir;
		1450	}
		1451	}
		1452
		1453	/* now sort the dirs only (dirs all have the same score) */
		1454	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1455	}
		1456
		1457	break;
		1458	}
		1459
		1460	/* now add the entry to our list(s) */
		1461	name = D_NAME (entp);
		1462
		1463	/* skip . and .. entries */
		1464	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1465	{
		1466	int len = D_NAMLEN (entp) + 1;
		1467
		1468	while (ecb_expect_false (namesoffs + len > namesalloc))
		1469	{
		1470	namesalloc *= 2;
		1471	req->ptr2 = names = realloc (names, namesalloc);
		1472
		1473	if (!names)
		1474	break;
		1475	}
		1476
		1477	memcpy (names + namesoffs, name, len);
		1478
		1479	if (dents)
		1480	{
		1481	struct eio_dirent *ent;
		1482
		1483	if (ecb_expect_false (dentoffs == dentalloc))
1742	{	1484	{
1743	/* in this case, all is known, and we just put dirs first and sort them */	1485	dentalloc *= 2;
		1486	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1487
		1488	if (!dents)
		1489	break;
		1490	}
		1491
1744	eio_dirent *oth = dents + dentoffs;	1492	ent = dents + dentoffs;
1745	eio_dirent *dir = dents;
1746		1493
1747	/* now partition dirs to the front, and non-dirs to the back */	1494	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1748	/* by walking from both sides and swapping if necessary */	1495	ent->namelen = len - 1;
1749	while (oth > dir)	1496	ent->inode = D_INO (entp);
		1497
		1498	inode_bits |= ent->inode;
		1499
		1500	switch (D_TYPE (entp))
		1501	{
		1502	default:
		1503	ent->type = EIO_DT_UNKNOWN;
		1504	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1505	break;
		1506
		1507	#ifdef DT_FIFO
		1508	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1509	#endif
		1510	#ifdef DT_CHR
		1511	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1512	#endif
		1513	#ifdef DT_MPC
		1514	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1515	#endif
		1516	#ifdef DT_DIR
		1517	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1518	#endif
		1519	#ifdef DT_NAM
		1520	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1521	#endif
		1522	#ifdef DT_BLK
		1523	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1524	#endif
		1525	#ifdef DT_MPB
		1526	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1527	#endif
		1528	#ifdef DT_REG
		1529	case DT_REG: ent->type = EIO_DT_REG; break;
		1530	#endif
		1531	#ifdef DT_NWK
		1532	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1533	#endif
		1534	#ifdef DT_CMP
		1535	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1536	#endif
		1537	#ifdef DT_LNK
		1538	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1539	#endif
		1540	#ifdef DT_SOCK
		1541	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1542	#endif
		1543	#ifdef DT_DOOR
		1544	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1545	#endif
		1546	#ifdef DT_WHT
		1547	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1548	#endif
		1549	}
		1550
		1551	ent->score = 7;
		1552
		1553	if (flags & EIO_READDIR_DIRS_FIRST)
		1554	{
		1555	if (ent->type == EIO_DT_UNKNOWN)
1750	{	1556	{
1751	if (dir->type == EIO_DT_DIR)	1557	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1752	++dir;	1558	ent->score = 1;
1753	else if ((--oth)->type == EIO_DT_DIR)	1559	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1754	{	1560	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1755	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1756
1757	++dir;
1758	}
1759	}	1561	}
1760		1562	else if (ent->type == EIO_DT_DIR)
1761	/* now sort the dirs only (dirs all have the same score) */	1563	ent->score = 0;
1762	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1763	}	1564	}
1764
1765	break;
1766	}
1767
1768	/* now add the entry to our list(s) */
1769	name = D_NAME (entp);
1770
1771	/* skip . and .. entries */
1772	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1773	{
1774	int len = D_NAMLEN (entp) + 1;
1775
1776	while (ecb_expect_false (namesoffs + len > namesalloc))
1777	{
1778	namesalloc *= 2;
1779	req->ptr2 = names = realloc (names, namesalloc);
1780
1781	if (!names)
1782	break;
1783	}	1565	}
1784		1566
1785	memcpy (names + namesoffs, name, len);
1786
1787	if (dents)
1788	{
1789	struct eio_dirent *ent;
1790
1791	if (ecb_expect_false (dentoffs == dentalloc))
1792	{
1793	dentalloc *= 2;
1794	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1795
1796	if (!dents)
1797	break;
1798	}
1799
1800	ent = dents + dentoffs;
1801
1802	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1803	ent->namelen = len - 1;
1804	ent->inode = D_INO (entp);
1805
1806	inode_bits |= ent->inode;
1807
1808	switch (D_TYPE (entp))
1809	{
1810	default:
1811	ent->type = EIO_DT_UNKNOWN;
1812	flags |= EIO_READDIR_FOUND_UNKNOWN;
1813	break;
1814
1815	#ifdef DT_FIFO
1816	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1817	#endif
1818	#ifdef DT_CHR
1819	case DT_CHR: ent->type = EIO_DT_CHR; break;
1820	#endif
1821	#ifdef DT_MPC
1822	case DT_MPC: ent->type = EIO_DT_MPC; break;
1823	#endif
1824	#ifdef DT_DIR
1825	case DT_DIR: ent->type = EIO_DT_DIR; break;
1826	#endif
1827	#ifdef DT_NAM
1828	case DT_NAM: ent->type = EIO_DT_NAM; break;
1829	#endif
1830	#ifdef DT_BLK
1831	case DT_BLK: ent->type = EIO_DT_BLK; break;
1832	#endif
1833	#ifdef DT_MPB
1834	case DT_MPB: ent->type = EIO_DT_MPB; break;
1835	#endif
1836	#ifdef DT_REG
1837	case DT_REG: ent->type = EIO_DT_REG; break;
1838	#endif
1839	#ifdef DT_NWK
1840	case DT_NWK: ent->type = EIO_DT_NWK; break;
1841	#endif
1842	#ifdef DT_CMP
1843	case DT_CMP: ent->type = EIO_DT_CMP; break;
1844	#endif
1845	#ifdef DT_LNK
1846	case DT_LNK: ent->type = EIO_DT_LNK; break;
1847	#endif
1848	#ifdef DT_SOCK
1849	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1850	#endif
1851	#ifdef DT_DOOR
1852	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1853	#endif
1854	#ifdef DT_WHT
1855	case DT_WHT: ent->type = EIO_DT_WHT; break;
1856	#endif
1857	}
1858
1859	ent->score = 7;
1860
1861	if (flags & EIO_READDIR_DIRS_FIRST)
1862	{
1863	if (ent->type == EIO_DT_UNKNOWN)
1864	{
1865	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1866	ent->score = 1;
1867	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1868	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1869	}
1870	else if (ent->type == EIO_DT_DIR)
1871	ent->score = 0;
1872	}
1873	}
1874
1875	namesoffs += len;	1567	namesoffs += len;
1876	++dentoffs;	1568	++dentoffs;
1877	}	1569	}
1878		1570
1879	if (EIO_CANCELLED (req))	1571	if (EIO_CANCELLED (req))
1880	{	1572	{
1881	errno = ECANCELED;	1573	errno = ECANCELED;
1882	break;	1574	break;
1883	}	1575	}
1884		1576
1885	#ifdef _WIN32	1577	#ifdef _WIN32
1886	if (!FindNextFile (dirp, &entp))	1578	if (!FindNextFile (dirp, &entp))
1887	{	1579	{
1888	FindClose (dirp);	1580	FindClose (dirp);
1889	dirp = 0;	1581	dirp = 0;
1890	}	1582	}
1891	#endif	1583	#endif
1892	}	1584	}
1893	}	1585	}
		1586
		1587	/*****************************************************************************/
		1588	/* working directory stuff */
		1589	/* various deficiencies in the posix 2008 api force us to */
		1590	/* keep the absolute path in string form at all times */
		1591	/* fuck yeah. */
		1592
		1593	#if !HAVE_AT
		1594
		1595	/* a bit like realpath, but usually faster because it doesn'T have to return */
		1596	/* an absolute or canonical path */
		1597	static const char *
		1598	wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1599	{
		1600	if (!wd || *path == '/')
		1601	return path;
		1602
		1603	if (path [0] == '.' && !path [1])
		1604	return wd->str;
		1605
		1606	{
		1607	int l1 = wd->len;
		1608	int l2 = strlen (path);
		1609
		1610	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
		1611
		1612	memcpy (res, wd->str, l1);
		1613	res [l1] = '/';
		1614	memcpy (res + l1 + 1, path, l2 + 1);
		1615
		1616	return res;
		1617	}
		1618	}
		1619
		1620	#endif
		1621
		1622	static eio_wd
		1623	eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1624	{
		1625	int fd;
		1626	eio_wd res;
		1627	int len = eio__realpath (tmpbuf, wd, path);
		1628
		1629	if (len < 0)
		1630	return EIO_INVALID_WD;
		1631
		1632	#if HAVE_AT
		1633	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1634
		1635	if (fd < 0)
		1636	return EIO_INVALID_WD;
		1637	#endif
		1638
		1639	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		1640
		1641	#if HAVE_AT
		1642	res->fd = fd;
		1643	#endif
		1644
		1645	res->len = len;
		1646	memcpy (res->str, tmpbuf->ptr, len);
		1647	res->str [len] = 0;
		1648
		1649	return res;
		1650	}
		1651
		1652	eio_wd
		1653	eio_wd_open_sync (eio_wd wd, const char *path)
		1654	{
		1655	struct etp_tmpbuf tmpbuf = { };
		1656	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		1657	free (tmpbuf.ptr);
		1658
		1659	return wd;
		1660	}
		1661
		1662	void
		1663	eio_wd_close_sync (eio_wd wd)
		1664	{
		1665	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		1666	{
		1667	#if HAVE_AT
		1668	close (wd->fd);
		1669	#endif
		1670	free (wd);
		1671	}
		1672	}
		1673
		1674	#if HAVE_AT
		1675
		1676	/* they forgot these */
		1677
		1678	static int
		1679	eio__truncateat (int dirfd, const char *path, off_t length)
		1680	{
		1681	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		1682	int res;
		1683
		1684	if (fd < 0)
		1685	return fd;
		1686
		1687	res = ftruncate (fd, length);
		1688	close (fd);
		1689	return res;
		1690	}
		1691
		1692	static int
		1693	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		1694	{
		1695	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		1696	int res;
		1697
		1698	if (fd < 0)
		1699	return fd;
		1700
		1701	res = fstatvfs (fd, buf);
		1702	close (fd);
		1703	return res;
		1704
		1705	}
		1706
		1707	#endif
1894		1708
1895	/*****************************************************************************/	1709	/*****************************************************************************/
1896		1710
1897	#define ALLOC(len) \	1711	#define ALLOC(len) \
1898	if (!req->ptr2) \	1712	if (!req->ptr2) \
1899	{ \	1713	{ \
1900	X_LOCK (wrklock); \	1714	X_LOCK (EIO_POOL->wrklock); \
1901	req->flags |= EIO_FLAG_PTR2_FREE; \	1715	req->flags |= EIO_FLAG_PTR2_FREE; \
1902	X_UNLOCK (wrklock); \	1716	X_UNLOCK (EIO_POOL->wrklock); \
1903	req->ptr2 = malloc (len); \	1717	req->ptr2 = malloc (len); \
1904	if (!req->ptr2) \	1718	if (!req->ptr2) \
1905	{ \	1719	{ \
1906	errno = ENOMEM; \	1720	errno = ENOMEM; \
1907	req->result = -1; \	1721	req->result = -1; \
1908	break; \	1722	break; \
1909	} \	1723	} \
1910	}	1724	}
1911		1725
1912	X_THREAD_PROC (etp_proc)
1913	{
1914	ETP_REQ *req;
1915	struct timespec ts;
1916	etp_worker *self = (etp_worker *)thr_arg;
1917
1918	/* try to distribute timeouts somewhat evenly */
1919	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1920
1921	for (;;)
1922	{
1923	ts.tv_sec = 0;
1924
1925	X_LOCK (reqlock);
1926
1927	for (;;)
1928	{
1929	self->req = req = reqq_shift (&req_queue);
1930
1931	if (req)
1932	break;
1933
1934	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1935	{
1936	X_UNLOCK (reqlock);
1937	X_LOCK (wrklock);
1938	--started;
1939	X_UNLOCK (wrklock);
1940	goto quit;
1941	}
1942
1943	++idle;
1944
1945	if (idle <= max_idle)
1946	/* we are allowed to idle, so do so without any timeout */
1947	X_COND_WAIT (reqwait, reqlock);
1948	else
1949	{
1950	/* initialise timeout once */
1951	if (!ts.tv_sec)
1952	ts.tv_sec = time (0) + idle_timeout;
1953
1954	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1955	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1956	}
1957
1958	--idle;
1959	}
1960
1961	--nready;
1962
1963	X_UNLOCK (reqlock);
1964
1965	if (req->type < 0)
1966	goto quit;
1967
1968	ETP_EXECUTE (self, req);
1969
1970	X_LOCK (reslock);
1971
1972	++npending;
1973
1974	if (!reqq_push (&res_queue, req) && want_poll_cb)
1975	want_poll_cb ();
1976
1977	self->req = 0;
1978	etp_worker_clear (self);
1979
1980	X_UNLOCK (reslock);
1981	}
1982
1983	quit:
1984	X_LOCK (wrklock);
1985	etp_worker_free (self);
1986	X_UNLOCK (wrklock);
1987
1988	return 0;
1989	}
1990
1991	/*****************************************************************************/	1726	/*****************************************************************************/
1992		1727
1993	int ecb_cold	1728	int ecb_cold
1994	eio_init (void (*want_poll)(void), void (*done_poll)(void))	1729	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1995	{	1730	{
1996	return etp_init (want_poll, done_poll);	1731	eio_want_poll_cb = want_poll;
		1732	eio_done_poll_cb = done_poll;
		1733
		1734	return etp_init (EIO_POOL, 0, 0, 0);
1997	}	1735	}
1998		1736
1999	ecb_inline void	1737	ecb_inline void
2000	eio_api_destroy (eio_req *req)	1738	eio_api_destroy (eio_req *req)
2001	{	1739	{
2002	free (req);	1740	free (req);
2003	}	1741	}
2004		1742
2005	#define REQ(rtype) \	1743	#define REQ(rtype) \
2006	eio_req *req; \	1744	eio_req *req; \
2007	\	1745	\
2008	req = (eio_req *)calloc (1, sizeof *req); \	1746	req = (eio_req *)calloc (1, sizeof *req); \
2009	if (!req) \	1747	if (!req) \
2010	return 0; \	1748	return 0; \
…		…
2024	{ \	1762	{ \
2025	eio_api_destroy (req); \	1763	eio_api_destroy (req); \
2026	return 0; \	1764	return 0; \
2027	}	1765	}
2028		1766
		1767	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		1768
2029	static void	1769	static void
2030	eio_execute (etp_worker *self, eio_req *req)	1770	eio_execute (etp_worker *self, eio_req *req)
2031	{	1771	{
		1772	#if HAVE_AT
		1773	int dirfd;
		1774	#else
		1775	const char *path;
		1776	#endif
		1777
2032	if (ecb_expect_false (EIO_CANCELLED (req)))	1778	if (ecb_expect_false (EIO_CANCELLED (req)))
2033	{	1779	{
2034	req->result = -1;	1780	req->result = -1;
2035	req->errorno = ECANCELED;	1781	req->errorno = ECANCELED;
2036	return;	1782	return;
2037	}	1783	}
2038		1784
		1785	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		1786	{
		1787	req->result = -1;
		1788	req->errorno = ENOENT;
		1789	return;
		1790	}
		1791
		1792	if (req->type >= EIO_OPEN)
		1793	{
		1794	#if HAVE_AT
		1795	dirfd = WD2FD (req->wd);
		1796	#else
		1797	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		1798	#endif
		1799	}
		1800
2039	switch (req->type)	1801	switch (req->type)
2040	{	1802	{
		1803	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		1804	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		1805	break;
		1806	case EIO_WD_CLOSE: req->result = 0;
		1807	eio_wd_close_sync (req->wd); break;
		1808
		1809	case EIO_SEEK: eio__lseek (req); break;
2041	case EIO_READ: ALLOC (req->size);	1810	case EIO_READ: ALLOC (req->size);
2042	req->result = req->offs >= 0	1811	req->result = req->offs >= 0
2043	? pread (req->int1, req->ptr2, req->size, req->offs)	1812	? pread (req->int1, req->ptr2, req->size, req->offs)
2044	: read (req->int1, req->ptr2, req->size); break;	1813	: read (req->int1, req->ptr2, req->size); break;
2045	case EIO_WRITE: req->result = req->offs >= 0	1814	case EIO_WRITE: req->result = req->offs >= 0
2046	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1815	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2047	: write (req->int1, req->ptr2, req->size); break;	1816	: write (req->int1, req->ptr2, req->size); break;
2048		1817
		1818	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1819	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1820
2049	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1821	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2050	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	1822	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
		1823
		1824	#if HAVE_AT
2051		1825
2052	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1826	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2053	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1827	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2054	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1828	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1829	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		1830	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		1831	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		1832	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		1833	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1834
		1835	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		1836	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1837	req->result = req->wd && SINGLEDOT (req->ptr1)
		1838	? rmdir (req->wd->str)
		1839	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		1840	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		1841	case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
		1842	req->result = req->wd && SINGLEDOT (req->ptr1)
		1843	? rename (req->wd->str, req->ptr2)
		1844	: renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		1845	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		1846	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		1847	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		1848	case EIO_READLINK: ALLOC (PATH_MAX);
		1849	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
		1850	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1851	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1852	case EIO_UTIME:
		1853	case EIO_FUTIME:
		1854	{
		1855	struct timespec ts[2];
		1856	struct timespec *times;
		1857
		1858	if (req->nv1 != -1. || req->nv2 != -1.)
		1859	{
		1860	ts[0].tv_sec = req->nv1;
		1861	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		1862	ts[1].tv_sec = req->nv2;
		1863	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		1864
		1865	times = ts;
		1866	}
		1867	else
		1868	times = 0;
		1869
		1870	req->result = req->type == EIO_FUTIME
		1871	? futimens (req->int1, times)
		1872	: utimensat (dirfd, req->ptr1, times, 0);
		1873	}
		1874	break;
		1875
		1876	#else
		1877
		1878	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1879	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1880	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2055	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1881	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1882	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		1883	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		1884	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		1885	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		1886
		1887	case EIO_UNLINK: req->result = unlink (path ); break;
		1888	case EIO_RMDIR: req->result = rmdir (path ); break;
		1889	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		1890	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		1891	case EIO_LINK: req->result = link (path , req->ptr2); break;
		1892	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		1893	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		1894	case EIO_READLINK: ALLOC (PATH_MAX);
		1895	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		1896	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1897	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1898
		1899	case EIO_UTIME:
		1900	case EIO_FUTIME:
		1901	{
		1902	struct timeval tv[2];
		1903	struct timeval *times;
		1904
		1905	if (req->nv1 != -1. || req->nv2 != -1.)
		1906	{
		1907	tv[0].tv_sec = req->nv1;
		1908	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		1909	tv[1].tv_sec = req->nv2;
		1910	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		1911
		1912	times = tv;
		1913	}
		1914	else
		1915	times = 0;
		1916
		1917	req->result = req->type == EIO_FUTIME
		1918	? futimes (req->int1, times)
		1919	: utimes (req->ptr1, times);
		1920	}
		1921	break;
		1922
		1923	#endif
		1924
		1925	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		1926	{
		1927	ALLOC (req->result);
		1928	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		1929	}
		1930	break;
		1931
2056	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1932	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2057	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	1933	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2058		1934
2059	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2060	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2061	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1935	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2062	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1936	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2063		1937
2064	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2065	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	1938	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2066	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2067	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	1939	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2068	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2069	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	1940	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2070		1941
2071	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2072	case EIO_CLOSE: req->result = close (req->int1); break;	1942	case EIO_CLOSE: req->result = close (req->int1); break;
2073	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	1943	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2074	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2075	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2076	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2077	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2078	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2079	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2080	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2081
2082	case EIO_REALPATH: eio__realpath (req, self); break;
2083
2084	case EIO_READLINK: ALLOC (PATH_MAX);
2085	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2086
2087	case EIO_SYNC: req->result = 0; sync (); break;	1944	case EIO_SYNC: req->result = 0; sync (); break;
2088	case EIO_FSYNC: req->result = fsync (req->int1); break;	1945	case EIO_FSYNC: req->result = fsync (req->int1); break;
2089	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	1946	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		1947	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		1948	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2090	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	1949	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2091	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	1950	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2092	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	1951	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2093	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	1952	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2094	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2095	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	1953	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2096		1954
2097	case EIO_READDIR: eio__scandir (req, self); break;	1955	case EIO_READDIR: eio__scandir (req, self); break;
2098		1956
2099	case EIO_BUSY:	1957	case EIO_BUSY:
…		…
2109	req->result = select (0, 0, 0, 0, &tv);	1967	req->result = select (0, 0, 0, 0, &tv);
2110	}	1968	}
2111	#endif	1969	#endif
2112	break;	1970	break;
2113		1971
2114	case EIO_UTIME:	1972	#if 0
2115	case EIO_FUTIME:
2116	{
2117	struct timeval tv[2];
2118	struct timeval *times;
2119
2120	if (req->nv1 != -1. || req->nv2 != -1.)
2121	{
2122	tv[0].tv_sec = req->nv1;
2123	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2124	tv[1].tv_sec = req->nv2;
2125	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2126
2127	times = tv;
2128	}
2129	else
2130	times = 0;
2131
2132	req->result = req->type == EIO_FUTIME
2133	? futimes (req->int1, times)
2134	: utimes (req->ptr1, times);
2135	}
2136	break;
2137
2138	case EIO_GROUP:	1973	case EIO_GROUP:
2139	abort (); /* handled in eio_request */	1974	abort (); /* handled in eio_request */
		1975	#endif
2140		1976
2141	case EIO_NOP:	1977	case EIO_NOP:
2142	req->result = 0;	1978	req->result = 0;
2143	break;	1979	break;
2144		1980
2145	case EIO_CUSTOM:	1981	case EIO_CUSTOM:
2146	req->feed (req);	1982	req->feed (req);
2147	break;	1983	break;
2148		1984
2149	default:	1985	default:
2150	errno = ENOSYS;
2151	req->result = -1;	1986	req->result = EIO_ENOSYS ();
2152	break;	1987	break;
2153	}	1988	}
2154		1989
2155	req->errorno = errno;	1990	req->errorno = errno;
2156	}	1991	}
2157		1992
2158	#ifndef EIO_NO_WRAPPERS	1993	#ifndef EIO_NO_WRAPPERS
2159		1994
		1995	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		1996	{
		1997	REQ (EIO_WD_OPEN); PATH; SEND;
		1998	}
		1999
		2000	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2001	{
		2002	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2003	}
		2004
2160	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2005	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2161	{	2006	{
2162	REQ (EIO_NOP); SEND;	2007	REQ (EIO_NOP); SEND;
2163	}	2008	}
2164		2009
…		…
2180	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2025	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2181	{	2026	{
2182	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2027	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2183	}	2028	}
2184		2029
		2030	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2031	{
		2032	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2033	}
		2034
		2035	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2036	{
		2037	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2038	}
		2039
		2040	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2041	{
		2042	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2043	}
		2044
2185	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2045	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2186	{	2046	{
2187	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2047	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2188	}	2048	}
2189		2049
…		…
2195	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2055	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2196	{	2056	{
2197	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2057	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2198	}	2058	}
2199		2059
2200	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2201	{
2202	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2203	}
2204
2205	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)	2060	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2206	{	2061	{
2207	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;	2062	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2208	}	2063	}
2209		2064
2210	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2211	{
2212	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2213	}
2214
2215	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2065	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2216	{	2066	{
2217	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2067	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2218	}	2068	}
2219		2069
2220	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2070	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2221	{	2071	{
2222	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2072	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2223	}	2073	}
2224		2074
		2075	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2076	{
		2077	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2078	}
		2079
2225	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2080	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2226	{	2081	{
2227	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2082	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2228	}	2083	}
2229		2084
2230	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2085	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2231	{	2086	{
2232	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2087	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2088	}
		2089
		2090	eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data)
		2091	{
		2092	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2093	}
		2094
		2095	eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data)
		2096	{
		2097	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2233	}	2098	}
2234		2099
2235	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2100	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
2236	{	2101	{
2237	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2102	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2425	void	2290	void
2426	eio_grp_add (eio_req *grp, eio_req *req)	2291	eio_grp_add (eio_req *grp, eio_req *req)
2427	{	2292	{
2428	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2293	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2429		2294
2430	grp->flags |= EIO_FLAG_GROUPADD;	2295	grp->flags |= ETP_FLAG_GROUPADD;
2431		2296
2432	++grp->size;	2297	++grp->size;
2433	req->grp = grp;	2298	req->grp = grp;
2434		2299
2435	req->grp_prev = 0;	2300	req->grp_prev = 0;
…		…
2445	/* misc garbage */	2310	/* misc garbage */
2446		2311
2447	eio_ssize_t	2312	eio_ssize_t
2448	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2313	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2449	{	2314	{
2450	etp_worker wrk;
2451	eio_ssize_t ret;
2452
2453	wrk.dbuf = 0;
2454
2455	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2315	return eio__sendfile (ofd, ifd, offset, count);
2456
2457	if (wrk.dbuf)
2458	free (wrk.dbuf);
2459
2460	return ret;
2461	}	2316	}
2462		2317

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