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Comparing libeio/eio.c (file contents):
Revision 1.94 by root, Mon Jul 18 02:59:58 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 = malloc (EIO_BUFSIZE); \	328	char *eio_buf = malloc (EIO_BUFSIZE); \
239	errno = ENOMEM; \	329	errno = ENOMEM; \
240	if (!eio_buf) \	330	if (!eio_buf) \
241	return -1	331	return -1
242		332
243	#define FUBd \	333	#define FUBd \
244	free (eio_buf)	334	free (eio_buf)
245		335
246	#define EIO_TICKS ((1000000 + 1023) >> 10)	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	/*****************************************************************************/	383	#include "etp.c"
261		384
262	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	385	static struct etp_pool eio_pool;
263		386	#define EIO_POOL (&eio_pool)
264	/* calculate time difference in ~1/EIO_TICKS of a second */
265	ecb_inline int
266	tvdiff (struct timeval *tv1, struct timeval *tv2)
267	{
268	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
269	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
270	}
271
272	static unsigned int started, idle, wanted = 4;
273
274	static void (*want_poll_cb) (void);
275	static void (*done_poll_cb) (void);
276
277	static unsigned int max_poll_time; /* reslock */
278	static unsigned int max_poll_reqs; /* reslock */
279
280	static volatile unsigned int nreqs; /* reqlock */
281	static volatile unsigned int nready; /* reqlock */
282	static volatile unsigned int npending; /* reqlock */
283	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
284	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
285
286	static xmutex_t wrklock;
287	static xmutex_t reslock;
288	static xmutex_t reqlock;
289	static xcond_t reqwait;
290
291	#if !HAVE_PREADWRITE
292	/*
293	* make our pread/pwrite emulation safe against themselves, but not against
294	* normal read/write by using a mutex. slows down execution a lot,
295	* but that's your problem, not mine.
296	*/
297	static xmutex_t preadwritelock;
298	#endif
299
300	typedef struct etp_worker
301	{
302	/* locked by wrklock */
303	struct etp_worker *prev, *next;
304
305	xthread_t tid;
306
307	/* locked by reslock, reqlock or wrklock */
308	ETP_REQ *req; /* currently processed request */
309
310	#ifdef ETP_WORKER_COMMON
311	ETP_WORKER_COMMON
312	#endif
313	} etp_worker;
314
315	static etp_worker wrk_first; /* NOT etp */
316
317	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
318	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
319
320	/* worker threads management */
321
322	static void ecb_cold
323	etp_worker_clear (etp_worker *wrk)
324	{
325	}
326
327	static void ecb_cold
328	etp_worker_free (etp_worker *wrk)
329	{
330	wrk->next->prev = wrk->prev;
331	wrk->prev->next = wrk->next;
332
333	free (wrk);
334	}
335
336	static unsigned int
337	etp_nreqs (void)
338	{
339	int retval;
340	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
341	retval = nreqs;
342	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
343	return retval;
344	}
345
346	static unsigned int
347	etp_nready (void)
348	{
349	unsigned int retval;
350
351	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
352	retval = nready;
353	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
354
355	return retval;
356	}
357
358	static unsigned int
359	etp_npending (void)
360	{
361	unsigned int retval;
362
363	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
364	retval = npending;
365	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
366
367	return retval;
368	}
369
370	static unsigned int
371	etp_nthreads (void)
372	{
373	unsigned int retval;
374
375	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
376	retval = started;
377	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
378
379	return retval;
380	}
381
382	/*
383	* a somewhat faster data structure might be nice, but
384	* with 8 priorities this actually needs <20 insns
385	* per shift, the most expensive operation.
386	*/
387	typedef struct {
388	ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
389	int size;
390	} etp_reqq;
391
392	static etp_reqq req_queue;
393	static etp_reqq res_queue;
394
395	static void ecb_noinline ecb_cold
396	reqq_init (etp_reqq *q)
397	{
398	int pri;
399
400	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
401	q->qs[pri] = q->qe[pri] = 0;
402
403	q->size = 0;
404	}
405
406	static int ecb_noinline
407	reqq_push (etp_reqq *q, ETP_REQ *req)
408	{
409	int pri = req->pri;
410	req->next = 0;
411
412	if (q->qe[pri])
413	{
414	q->qe[pri]->next = req;
415	q->qe[pri] = req;
416	}
417	else
418	q->qe[pri] = q->qs[pri] = req;
419
420	return q->size++;
421	}
422
423	static ETP_REQ * ecb_noinline
424	reqq_shift (etp_reqq *q)
425	{
426	int pri;
427
428	if (!q->size)
429	return 0;
430
431	--q->size;
432
433	for (pri = ETP_NUM_PRI; pri--; )
434	{
435	eio_req *req = q->qs[pri];
436
437	if (req)
438	{
439	if (!(q->qs[pri] = (eio_req *)req->next))
440	q->qe[pri] = 0;
441
442	return req;
443	}
444	}
445
446	abort ();
447	}
448
449	static int ecb_cold
450	etp_init (void (*want_poll)(void), void (*done_poll)(void))
451	{
452	X_MUTEX_CREATE (wrklock);
453	X_MUTEX_CREATE (reslock);
454	X_MUTEX_CREATE (reqlock);
455	X_COND_CREATE (reqwait);
456
457	reqq_init (&req_queue);
458	reqq_init (&res_queue);
459
460	wrk_first.next =
461	wrk_first.prev = &wrk_first;
462
463	started = 0;
464	idle = 0;
465	nreqs = 0;
466	nready = 0;
467	npending = 0;
468
469	want_poll_cb = want_poll;
470	done_poll_cb = done_poll;
471
472	return 0;
473	}
474
475	X_THREAD_PROC (etp_proc);
476
477	static void ecb_cold
478	etp_start_thread (void)
479	{
480	etp_worker *wrk = calloc (1, sizeof (etp_worker));
481
482	/*TODO*/
483	assert (("unable to allocate worker thread data", wrk));
484
485	X_LOCK (wrklock);
486
487	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
488	{
489	wrk->prev = &wrk_first;
490	wrk->next = wrk_first.next;
491	wrk_first.next->prev = wrk;
492	wrk_first.next = wrk;
493	++started;
494	}
495	else
496	free (wrk);
497
498	X_UNLOCK (wrklock);
499	}
500
501	static void
502	etp_maybe_start_thread (void)
503	{
504	if (ecb_expect_true (etp_nthreads () >= wanted))
505	return;
506
507	/* todo: maybe use idle here, but might be less exact */
508	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
509	return;
510
511	etp_start_thread ();
512	}
513
514	static void ecb_cold
515	etp_end_thread (void)
516	{
517	eio_req *req = calloc (1, sizeof (eio_req));
518
519	req->type = -1;
520	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
521
522	X_LOCK (reqlock);
523	reqq_push (&req_queue, req);
524	X_COND_SIGNAL (reqwait);
525	X_UNLOCK (reqlock);
526
527	X_LOCK (wrklock);
528	--started;
529	X_UNLOCK (wrklock);
530	}
531
532	static int
533	etp_poll (void)
534	{
535	unsigned int maxreqs;
536	unsigned int maxtime;
537	struct timeval tv_start, tv_now;
538
539	X_LOCK (reslock);
540	maxreqs = max_poll_reqs;
541	maxtime = max_poll_time;
542	X_UNLOCK (reslock);
543
544	if (maxtime)
545	gettimeofday (&tv_start, 0);
546
547	for (;;)
548	{
549	ETP_REQ *req;
550
551	etp_maybe_start_thread ();
552
553	X_LOCK (reslock);
554	req = reqq_shift (&res_queue);
555
556	if (req)
557	{
558	--npending;
559
560	if (!res_queue.size && done_poll_cb)
561	done_poll_cb ();
562	}
563
564	X_UNLOCK (reslock);
565
566	if (!req)
567	return 0;
568
569	X_LOCK (reqlock);
570	--nreqs;
571	X_UNLOCK (reqlock);
572
573	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
574	{
575	req->int1 = 1; /* mark request as delayed */
576	continue;
577	}
578	else
579	{
580	int res = ETP_FINISH (req);
581	if (ecb_expect_false (res))
582	return res;
583	}
584
585	if (ecb_expect_false (maxreqs && !--maxreqs))
586	break;
587
588	if (maxtime)
589	{
590	gettimeofday (&tv_now, 0);
591
592	if (tvdiff (&tv_start, &tv_now) >= maxtime)
593	break;
594	}
595	}
596
597	errno = EAGAIN;
598	return -1;
599	}
600
601	static void
602	etp_cancel (ETP_REQ *req)
603	{
604	req->cancelled = 1;
605
606	eio_grp_cancel (req);
607	}
608
609	static void
610	etp_submit (ETP_REQ *req)
611	{
612	req->pri -= ETP_PRI_MIN;
613
614	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
615	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
616
617	if (ecb_expect_false (req->type == EIO_GROUP))
618	{
619	/* I hope this is worth it :/ */
620	X_LOCK (reqlock);
621	++nreqs;
622	X_UNLOCK (reqlock);
623
624	X_LOCK (reslock);
625
626	++npending;
627
628	if (!reqq_push (&res_queue, req) && want_poll_cb)
629	want_poll_cb ();
630
631	X_UNLOCK (reslock);
632	}
633	else
634	{
635	X_LOCK (reqlock);
636	++nreqs;
637	++nready;
638	reqq_push (&req_queue, req);
639	X_COND_SIGNAL (reqwait);
640	X_UNLOCK (reqlock);
641
642	etp_maybe_start_thread ();
643	}
644	}
645
646	static void ecb_cold
647	etp_set_max_poll_time (double nseconds)
648	{
649	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
650	max_poll_time = nseconds * EIO_TICKS;
651	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
652	}
653
654	static void ecb_cold
655	etp_set_max_poll_reqs (unsigned int maxreqs)
656	{
657	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
658	max_poll_reqs = maxreqs;
659	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
660	}
661
662	static void ecb_cold
663	etp_set_max_idle (unsigned int nthreads)
664	{
665	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
666	max_idle = nthreads;
667	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
668	}
669
670	static void ecb_cold
671	etp_set_idle_timeout (unsigned int seconds)
672	{
673	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
674	idle_timeout = seconds;
675	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
676	}
677
678	static void ecb_cold
679	etp_set_min_parallel (unsigned int nthreads)
680	{
681	if (wanted < nthreads)
682	wanted = nthreads;
683	}
684
685	static void ecb_cold
686	etp_set_max_parallel (unsigned int nthreads)
687	{
688	if (wanted > nthreads)
689	wanted = nthreads;
690
691	while (started > wanted)
692	etp_end_thread ();
693	}
694		387
695	/*****************************************************************************/	388	/*****************************************************************************/
696		389
697	static void	390	static void
698	grp_try_feed (eio_req *grp)	391	grp_try_feed (eio_req *grp)
699	{	392	{
700	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	393	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
701	{	394	{
702	grp->flags &= ~EIO_FLAG_GROUPADD;	395	grp->flags &= ~ETP_FLAG_GROUPADD;
703		396
704	EIO_FEED (grp);	397	EIO_FEED (grp);
705		398
706	/* stop if no progress has been made */	399	/* stop if no progress has been made */
707	if (!(grp->flags & EIO_FLAG_GROUPADD))	400	if (!(grp->flags & ETP_FLAG_GROUPADD))
708	{	401	{
709	grp->feed = 0;	402	grp->feed = 0;
710	break;	403	break;
711	}	404	}
712	}	405	}
…		…
719		412
720	/* call feeder, if applicable */	413	/* call feeder, if applicable */
721	grp_try_feed (grp);	414	grp_try_feed (grp);
722		415
723	/* finish, if done */	416	/* finish, if done */
724	if (!grp->size && grp->int1)	417	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
725	return eio_finish (grp);	418	return eio_finish (grp);
726	else	419	else
727	return 0;	420	return 0;
728	}	421	}
729		422
…		…
765	}	458	}
766		459
767	void	460	void
768	eio_grp_cancel (eio_req *grp)	461	eio_grp_cancel (eio_req *grp)
769	{	462	{
770	for (grp = grp->grp_first; grp; grp = grp->grp_next)	463	etp_grp_cancel (EIO_POOL, grp);
771	eio_cancel (grp);
772	}	464	}
773		465
774	void	466	void
775	eio_cancel (eio_req *req)	467	eio_cancel (eio_req *req)
776	{	468	{
777	etp_cancel (req);	469	etp_cancel (EIO_POOL, req);
778	}	470	}
779		471
780	void	472	void
781	eio_submit (eio_req *req)	473	eio_submit (eio_req *req)
782	{	474	{
783	etp_submit (req);	475	etp_submit (EIO_POOL, req);
784	}	476	}
785		477
786	unsigned int	478	unsigned int
787	eio_nreqs (void)	479	eio_nreqs (void)
788	{	480	{
789	return etp_nreqs ();	481	return etp_nreqs (EIO_POOL);
790	}	482	}
791		483
792	unsigned int	484	unsigned int
793	eio_nready (void)	485	eio_nready (void)
794	{	486	{
795	return etp_nready ();	487	return etp_nready (EIO_POOL);
796	}	488	}
797		489
798	unsigned int	490	unsigned int
799	eio_npending (void)	491	eio_npending (void)
800	{	492	{
801	return etp_npending ();	493	return etp_npending (EIO_POOL);
802	}	494	}
803		495
804	unsigned int ecb_cold	496	unsigned int ecb_cold
805	eio_nthreads (void)	497	eio_nthreads (void)
806	{	498	{
807	return etp_nthreads ();	499	return etp_nthreads (EIO_POOL);
808	}	500	}
809		501
810	void ecb_cold	502	void ecb_cold
811	eio_set_max_poll_time (double nseconds)	503	eio_set_max_poll_time (double nseconds)
812	{	504	{
813	etp_set_max_poll_time (nseconds);	505	etp_set_max_poll_time (EIO_POOL, nseconds);
814	}	506	}
815		507
816	void ecb_cold	508	void ecb_cold
817	eio_set_max_poll_reqs (unsigned int maxreqs)	509	eio_set_max_poll_reqs (unsigned int maxreqs)
818	{	510	{
819	etp_set_max_poll_reqs (maxreqs);	511	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
820	}	512	}
821		513
822	void ecb_cold	514	void ecb_cold
823	eio_set_max_idle (unsigned int nthreads)	515	eio_set_max_idle (unsigned int nthreads)
824	{	516	{
825	etp_set_max_idle (nthreads);	517	etp_set_max_idle (EIO_POOL, nthreads);
826	}	518	}
827		519
828	void ecb_cold	520	void ecb_cold
829	eio_set_idle_timeout (unsigned int seconds)	521	eio_set_idle_timeout (unsigned int seconds)
830	{	522	{
831	etp_set_idle_timeout (seconds);	523	etp_set_idle_timeout (EIO_POOL, seconds);
832	}	524	}
833		525
834	void ecb_cold	526	void ecb_cold
835	eio_set_min_parallel (unsigned int nthreads)	527	eio_set_min_parallel (unsigned int nthreads)
836	{	528	{
837	etp_set_min_parallel (nthreads);	529	etp_set_min_parallel (EIO_POOL, nthreads);
838	}	530	}
839		531
840	void ecb_cold	532	void ecb_cold
841	eio_set_max_parallel (unsigned int nthreads)	533	eio_set_max_parallel (unsigned int nthreads)
842	{	534	{
843	etp_set_max_parallel (nthreads);	535	etp_set_max_parallel (EIO_POOL, nthreads);
844	}	536	}
845		537
846	int eio_poll (void)	538	int eio_poll (void)
847	{	539	{
848	return etp_poll ();	540	return etp_poll (EIO_POOL);
849	}	541	}
850		542
851	/*****************************************************************************/	543	/*****************************************************************************/
852	/* work around various missing functions */	544	/* work around various missing functions */
853
854	#if !HAVE_PREADWRITE
855	# undef pread
856	# undef pwrite
857	# define pread eio__pread
858	# define pwrite eio__pwrite
859
860	static eio_ssize_t
861	eio__pread (int fd, void *buf, size_t count, off_t offset)
862	{
863	eio_ssize_t res;
864	off_t ooffset;
865
866	X_LOCK (preadwritelock);
867	ooffset = lseek (fd, 0, SEEK_CUR);
868	lseek (fd, offset, SEEK_SET);
869	res = read (fd, buf, count);
870	lseek (fd, ooffset, SEEK_SET);
871	X_UNLOCK (preadwritelock);
872
873	return res;
874	}
875
876	static eio_ssize_t
877	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
878	{
879	eio_ssize_t res;
880	off_t ooffset;
881
882	X_LOCK (preadwritelock);
883	ooffset = lseek (fd, 0, SEEK_CUR);
884	lseek (fd, offset, SEEK_SET);
885	res = write (fd, buf, count);
886	lseek (fd, ooffset, SEEK_SET);
887	X_UNLOCK (preadwritelock);
888
889	return res;
890	}
891	#endif
892		545
893	#ifndef HAVE_UTIMES	546	#ifndef HAVE_UTIMES
894		547
895	# undef utimes	548	# undef utimes
896	# define utimes(path,times) eio__utimes (path, times)	549	# define utimes(path,times) eio__utimes (path, times)
…		…
929		582
930	#if !HAVE_FDATASYNC	583	#if !HAVE_FDATASYNC
931	# undef fdatasync	584	# undef fdatasync
932	# define fdatasync(fd) fsync (fd)	585	# define fdatasync(fd) fsync (fd)
933	#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	}
934		604
935	/* sync_file_range always needs emulation */	605	/* sync_file_range always needs emulation */
936	static int	606	static int
937	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)
938	{	608	{
…		…
961	}	631	}
962		632
963	static int	633	static int
964	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)
965	{	635	{
966	#if HAVE_FALLOCATE	636	#if HAVE_LINUX_FALLOCATE
967	return fallocate (fd, mode, offset, len);	637	return fallocate (fd, mode, offset, len);
968	#else	638	#else
969	errno = ENOSYS;	639	return EIO_ENOSYS ();
970	return -1;
971	#endif	640	#endif
972	}	641	}
973		642
974	#if !HAVE_READAHEAD	643	#if !HAVE_READAHEAD
975	# undef readahead	644	# undef readahead
…		…
990	todo -= len;	659	todo -= len;
991	}	660	}
992		661
993	FUBd;	662	FUBd;
994		663
995	errno = 0;	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 */
996	return count;	666	return 0;
997	}	667	}
998		668
999	#endif	669	#endif
1000		670
1001	/* sendfile always needs emulation */	671	/* sendfile always needs emulation */
…		…
1036		706
1037	/* according to source inspection, this is correct, and useful behaviour */	707	/* according to source inspection, this is correct, and useful behaviour */
1038	if (sbytes)	708	if (sbytes)
1039	res = sbytes;	709	res = sbytes;
1040		710
1041	# elif defined (__APPLE__)	711	# elif defined __APPLE__
1042	off_t sbytes = count;	712	off_t sbytes = count;
1043	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	713	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1044		714
1045	/* according to the manpage, sbytes is always valid */	715	/* according to the manpage, sbytes is always valid */
1046	if (sbytes)	716	if (sbytes)
…		…
1073	HANDLE h = TO_SOCKET (ifd);	743	HANDLE h = TO_SOCKET (ifd);
1074	SetFilePointer (h, offset, 0, FILE_BEGIN);	744	SetFilePointer (h, offset, 0, FILE_BEGIN);
1075	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	745	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1076		746
1077	#else	747	#else
1078	res = -1;	748	res = EIO_ENOSYS ();
1079	errno = ENOSYS;
1080	#endif	749	#endif
1081		750
1082	/* we assume sendfile can copy at least 128mb in one go */	751	/* we assume sendfile can copy at least 128mb in one go */
1083	if (res <= 128 * 1024 * 1024)	752	if (res <= 128 * 1024 * 1024)
1084	{	753	{
…		…
1271		940
1272	/*****************************************************************************/	941	/*****************************************************************************/
1273	/* requests implemented outside eio_execute, because they are so large */	942	/* requests implemented outside eio_execute, because they are so large */
1274		943
1275	static void	944	static void
1276	eio__realpath (eio_req *req, etp_worker *self)	945	eio__lseek (eio_req *req)
1277	{	946	{
1278	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	{
1279	char *res;	962	char *res;
		963	const char *rel = path;
1280	char *tmp1, *tmp2;	964	char *tmp1, *tmp2;
1281	#if SYMLOOP_MAX > 32	965	#if SYMLOOP_MAX > 32
1282	int symlinks = SYMLOOP_MAX;	966	int symlinks = SYMLOOP_MAX;
1283	#else	967	#else
1284	int symlinks = 32;	968	int symlinks = 32;
1285	#endif	969	#endif
1286		970
1287	req->result = -1;
1288
1289	errno = EINVAL;	971	errno = EINVAL;
1290	if (!rel)	972	if (!rel)
1291	return;	973	return -1;
1292		974
1293	errno = ENOENT;	975	errno = ENOENT;
1294	if (!*rel)	976	if (!*rel)
1295	return;	977	return -1;
1296		978
1297	if (!req->ptr2)	979	res = etp_tmpbuf_get (tmpbuf, PATH_MAX * 3);
1298	{	980	#ifdef _WIN32
1299	X_LOCK (wrklock);	981	if (_access (rel, 4) != 0)
1300	req->flags |= EIO_FLAG_PTR2_FREE;
1301	X_UNLOCK (wrklock);
1302	req->ptr2 = malloc (PATH_MAX * 3);
1303
1304	errno = ENOMEM;
1305	if (!req->ptr2)
1306	return;	982	return -1;
1307	}
1308		983
1309	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
1310	tmp1 = res + PATH_MAX;	997	tmp1 = res + PATH_MAX;
1311	tmp2 = tmp1 + PATH_MAX;	998	tmp2 = tmp1 + PATH_MAX;
1312		999
1313	#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 */
1314	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1001	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1318		1005
1319	if (fd >= 0)	1006	if (fd >= 0)
1320	{	1007	{
1321	sprintf (tmp1, "/proc/self/fd/%d", fd);	1008	sprintf (tmp1, "/proc/self/fd/%d", fd);
1322	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 */
1323	close (fd);	1011	close (fd);
1324
1325	/* here we should probably stat the open file and the disk file, to make sure they still match */
1326		1012
1327	if (req->result > 0)	1013	if (req->result > 0)
1328	goto done;	1014	goto done;
1329	}	1015	}
1330	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)
1331	return;	1017	return -1;
1332	}	1018	}
1333	#endif	1019	#endif
1334	#endif	1020	#endif
1335		1021
1336	if (*rel != '/')	1022	if (*rel != '/')
1337	{	1023	{
		1024	int len;
		1025
		1026	errno = ENOENT;
		1027	if (wd == EIO_INVALID_WD)
		1028	return -1;
		1029
		1030	if (wd == EIO_CWD)
		1031	{
1338	if (!getcwd (res, PATH_MAX))	1032	if (!getcwd (res, PATH_MAX))
1339	return;	1033	return -1;
		1034
		1035	len = strlen (res);
		1036	}
		1037	else
		1038	memcpy (res, wd->str, len = wd->len);
1340		1039
1341	if (res [1]) /* only use if not / */	1040	if (res [1]) /* only use if not / */
1342	res += strlen (res);	1041	res += len;
1343	}	1042	}
1344		1043
1345	while (*rel)	1044	while (*rel)
1346	{	1045	{
1347	eio_ssize_t len, linklen;	1046	eio_ssize_t len, linklen;
1348	char *beg = rel;	1047	const char *beg = rel;
1349		1048
1350	while (*rel && *rel != '/')	1049	while (*rel && *rel != '/')
1351	++rel;	1050	++rel;
1352		1051
1353	len = rel - beg;	1052	len = rel - beg;
…		…
1365		1064
1366	if (beg [1] == '.' && len == 2)	1065	if (beg [1] == '.' && len == 2)
1367	{	1066	{
1368	/* .. - back up one component, if possible */	1067	/* .. - back up one component, if possible */
1369		1068
1370	while (res != req->ptr2)	1069	while (res != tmpbuf->ptr)
1371	if (*--res == '/')	1070	if (*--res == '/')
1372	break;	1071	break;
1373		1072
1374	continue;	1073	continue;
1375	}	1074	}
1376	}	1075	}
1377		1076
1378	errno = ENAMETOOLONG;	1077	errno = ENAMETOOLONG;
1379	if (res + 1 + len + 1 >= tmp1)	1078	if (res + 1 + len + 1 >= tmp1)
1380	return;	1079	return -1;
1381		1080
1382	/* copy one component */	1081	/* copy one component */
1383	*res = '/';	1082	*res = '/';
1384	memcpy (res + 1, beg, len);	1083	memcpy (res + 1, beg, len);
1385		1084
1386	/* zero-terminate, for readlink */	1085	/* zero-terminate, for readlink */
1387	res [len + 1] = 0;	1086	res [len + 1] = 0;
1388		1087
1389	/* now check if it's a symlink */	1088	/* now check if it's a symlink */
1390	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1089	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1391		1090
1392	if (linklen < 0)	1091	if (linklen < 0)
1393	{	1092	{
1394	if (errno != EINVAL)	1093	if (errno != EINVAL)
1395	return;	1094	return -1;
1396		1095
1397	/* it's a normal directory. hopefully */	1096	/* it's a normal directory. hopefully */
1398	res += len + 1;	1097	res += len + 1;
1399	}	1098	}
1400	else	1099	else
…		…
1402	/* yay, it was a symlink - build new path in tmp2 */	1101	/* yay, it was a symlink - build new path in tmp2 */
1403	int rellen = strlen (rel);	1102	int rellen = strlen (rel);
1404		1103
1405	errno = ENAMETOOLONG;	1104	errno = ENAMETOOLONG;
1406	if (linklen + 1 + rellen >= PATH_MAX)	1105	if (linklen + 1 + rellen >= PATH_MAX)
1407	return;	1106	return -1;
1408		1107
1409	errno = ELOOP;	1108	errno = ELOOP;
1410	if (!--symlinks)	1109	if (!--symlinks)
1411	return;	1110	return -1;
1412		1111
1413	if (*tmp1 == '/')	1112	if (*tmp1 == '/')
1414	res = req->ptr2; /* symlink resolves to an absolute path */	1113	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1415		1114
1416	/* 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 */
1417	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1116	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1418	tmp2 [linklen] = '/';	1117	tmp2 [linklen] = '/';
1419	memcpy (tmp2, tmp1, linklen);	1118	memcpy (tmp2, tmp1, linklen);
…		…
1421	rel = tmp2;	1120	rel = tmp2;
1422	}	1121	}
1423	}	1122	}
1424		1123
1425	/* special case for the lone root path */	1124	/* special case for the lone root path */
1426	if (res == req->ptr2)	1125	if (res == tmpbuf->ptr)
1427	*res++ = '/';	1126	*res++ = '/';
1428		1127
1429	req->result = res - (char *)req->ptr2;	1128	return res - (char *)tmpbuf->ptr;
1430		1129	#endif
1431	done:
1432	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1433	}	1130	}
1434		1131
1435	static signed char	1132	static signed char
1436	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1133	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1437	{	1134	{
…		…
1625	#ifdef _WIN32	1322	#ifdef _WIN32
1626	{	1323	{
1627	int len = strlen ((const char *)req->ptr1);	1324	int len = strlen ((const char *)req->ptr1);
1628	char *path = malloc (MAX_PATH);	1325	char *path = malloc (MAX_PATH);
1629	const char *fmt;	1326	const char *fmt;
		1327	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1630		1328
1631	if (!len)	1329	if (!len)
1632	fmt = "./*";	1330	fmt = "./*";
1633	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1331	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1634	fmt = "%s*";	1332	fmt = "%s*";
1635	else	1333	else
1636	fmt = "%s/*";	1334	fmt = "%s/*";
1637		1335
1638	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1336	_snprintf (path, MAX_PATH, fmt, reqpath);
1639	dirp = FindFirstFile (path, &entp);	1337	dirp = FindFirstFile (path, &entp);
1640	free (path);	1338	free (path);
1641		1339
1642	if (dirp == INVALID_HANDLE_VALUE)	1340	if (dirp == INVALID_HANDLE_VALUE)
1643	{	1341	{
1644	dirp = 0;	1342	/* should steal _dosmaperr */
1645
1646	switch (GetLastError ())	1343	switch (GetLastError ())
1647	{	1344	{
1648	case ERROR_FILE_NOT_FOUND:	1345	case ERROR_FILE_NOT_FOUND:
1649	req->result = 0;	1346	req->result = 0;
1650	break;	1347	break;
1651		1348
1652	case ERROR_INVALID_NAME:	1349	case ERROR_INVALID_NAME:
1653	case ERROR_PATH_NOT_FOUND:	1350	case ERROR_PATH_NOT_FOUND:
1654	case ERROR_NO_MORE_FILES:	1351	case ERROR_NO_MORE_FILES:
1655	errno = ENOENT;	1352	errno = ENOENT;
1656	break;	1353	break;
1657		1354
1658	case ERROR_NOT_ENOUGH_MEMORY:	1355	case ERROR_NOT_ENOUGH_MEMORY:
1659	errno = ENOMEM;	1356	errno = ENOMEM;
1660	break;	1357	break;
1661		1358
1662	default:	1359	default:
1663	errno = EINVAL;	1360	errno = EINVAL;
1664	break;	1361	break;
1665	}	1362	}
		1363
		1364	return;
1666	}	1365	}
1667	}	1366	}
1668	#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
1669	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;
1670	#endif	1389	#endif
1671		1390
1672	if (req->flags & EIO_FLAG_PTR1_FREE)	1391	if (req->flags & EIO_FLAG_PTR1_FREE)
1673	free (req->ptr1);	1392	free (req->ptr1);
1674		1393
1675	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1394	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1676	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1395	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1677	req->ptr2 = names = malloc (namesalloc);	1396	req->ptr2 = names = malloc (namesalloc);
1678		1397
1679	if (dirp && names && (!flags || dents))	1398	if (!names || (flags && !dents))
		1399	return;
		1400
1680	for (;;)	1401	for (;;)
1681	{	1402	{
1682	int done;	1403	int done;
1683		1404
1684	#ifdef _WIN32	1405	#ifdef _WIN32
1685	done = !dirp;	1406	done = !dirp;
1686	#else	1407	#else
1687	errno = 0;	1408	errno = 0;
1688	entp = readdir (dirp);	1409	entp = readdir (dirp);
1689	done = !entp;	1410	done = !entp;
1690	#endif	1411	#endif
1691		1412
1692	if (done)	1413	if (done)
1693	{	1414	{
1694	#ifndef _WIN32	1415	#ifndef _WIN32
1695	int old_errno = errno;	1416	int old_errno = errno;
1696	closedir (dirp);	1417	closedir (dirp);
1697	errno = old_errno;	1418	errno = old_errno;
1698		1419
1699	if (errno)	1420	if (errno)
1700	break;	1421	break;
1701	#endif	1422	#endif
1702		1423
1703	/* sort etc. */	1424	/* sort etc. */
1704	req->int1 = flags;	1425	req->int1 = flags;
1705	req->result = dentoffs;	1426	req->result = dentoffs;
1706		1427
1707	if (flags & EIO_READDIR_STAT_ORDER)	1428	if (flags & EIO_READDIR_STAT_ORDER)
1708	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);
1709	else if (flags & EIO_READDIR_DIRS_FIRST)	1430	else if (flags & EIO_READDIR_DIRS_FIRST)
1710	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1431	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1711	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 */
1712	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))
1713	{	1484	{
1714	/* 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
1715	eio_dirent *oth = dents + dentoffs;	1492	ent = dents + dentoffs;
1716	eio_dirent *dir = dents;
1717		1493
1718	/* 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 */
1719	/* by walking from both sides and swapping if necessary */	1495	ent->namelen = len - 1;
1720	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)
1721	{	1556	{
1722	if (dir->type == EIO_DT_DIR)	1557	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1723	++dir;	1558	ent->score = 1;
1724	else if ((--oth)->type == EIO_DT_DIR)	1559	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1725	{	1560	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1726	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1727
1728	++dir;
1729	}
1730	}	1561	}
1731		1562	else if (ent->type == EIO_DT_DIR)
1732	/* now sort the dirs only (dirs all have the same score) */	1563	ent->score = 0;
1733	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1734	}	1564	}
1735
1736	break;
1737	}
1738
1739	/* now add the entry to our list(s) */
1740	name = D_NAME (entp);
1741
1742	/* skip . and .. entries */
1743	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1744	{
1745	int len = D_NAMLEN (entp) + 1;
1746
1747	while (ecb_expect_false (namesoffs + len > namesalloc))
1748	{
1749	namesalloc *= 2;
1750	req->ptr2 = names = realloc (names, namesalloc);
1751
1752	if (!names)
1753	break;
1754	}	1565	}
1755		1566
1756	memcpy (names + namesoffs, name, len);
1757
1758	if (dents)
1759	{
1760	struct eio_dirent *ent;
1761
1762	if (ecb_expect_false (dentoffs == dentalloc))
1763	{
1764	dentalloc *= 2;
1765	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1766
1767	if (!dents)
1768	break;
1769	}
1770
1771	ent = dents + dentoffs;
1772
1773	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1774	ent->namelen = len - 1;
1775	ent->inode = D_INO (entp);
1776
1777	inode_bits |= ent->inode;
1778
1779	switch (D_TYPE (entp))
1780	{
1781	default:
1782	ent->type = EIO_DT_UNKNOWN;
1783	flags |= EIO_READDIR_FOUND_UNKNOWN;
1784	break;
1785
1786	#ifdef DT_FIFO
1787	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1788	#endif
1789	#ifdef DT_CHR
1790	case DT_CHR: ent->type = EIO_DT_CHR; break;
1791	#endif
1792	#ifdef DT_MPC
1793	case DT_MPC: ent->type = EIO_DT_MPC; break;
1794	#endif
1795	#ifdef DT_DIR
1796	case DT_DIR: ent->type = EIO_DT_DIR; break;
1797	#endif
1798	#ifdef DT_NAM
1799	case DT_NAM: ent->type = EIO_DT_NAM; break;
1800	#endif
1801	#ifdef DT_BLK
1802	case DT_BLK: ent->type = EIO_DT_BLK; break;
1803	#endif
1804	#ifdef DT_MPB
1805	case DT_MPB: ent->type = EIO_DT_MPB; break;
1806	#endif
1807	#ifdef DT_REG
1808	case DT_REG: ent->type = EIO_DT_REG; break;
1809	#endif
1810	#ifdef DT_NWK
1811	case DT_NWK: ent->type = EIO_DT_NWK; break;
1812	#endif
1813	#ifdef DT_CMP
1814	case DT_CMP: ent->type = EIO_DT_CMP; break;
1815	#endif
1816	#ifdef DT_LNK
1817	case DT_LNK: ent->type = EIO_DT_LNK; break;
1818	#endif
1819	#ifdef DT_SOCK
1820	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1821	#endif
1822	#ifdef DT_DOOR
1823	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1824	#endif
1825	#ifdef DT_WHT
1826	case DT_WHT: ent->type = EIO_DT_WHT; break;
1827	#endif
1828	}
1829
1830	ent->score = 7;
1831
1832	if (flags & EIO_READDIR_DIRS_FIRST)
1833	{
1834	if (ent->type == EIO_DT_UNKNOWN)
1835	{
1836	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1837	ent->score = 1;
1838	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1839	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1840	}
1841	else if (ent->type == EIO_DT_DIR)
1842	ent->score = 0;
1843	}
1844	}
1845
1846	namesoffs += len;	1567	namesoffs += len;
1847	++dentoffs;	1568	++dentoffs;
1848	}	1569	}
1849		1570
1850	if (EIO_CANCELLED (req))	1571	if (EIO_CANCELLED (req))
1851	{	1572	{
1852	errno = ECANCELED;	1573	errno = ECANCELED;
1853	break;	1574	break;
1854	}	1575	}
1855		1576
1856	#ifdef _WIN32	1577	#ifdef _WIN32
1857	if (!FindNextFile (dirp, &entp))	1578	if (!FindNextFile (dirp, &entp))
1858	{	1579	{
1859	FindClose (dirp);	1580	FindClose (dirp);
1860	dirp = 0;	1581	dirp = 0;
1861	}	1582	}
1862	#endif	1583	#endif
1863	}	1584	}
1864	}	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
1865		1708
1866	/*****************************************************************************/	1709	/*****************************************************************************/
1867		1710
1868	#define ALLOC(len) \	1711	#define ALLOC(len) \
1869	if (!req->ptr2) \	1712	if (!req->ptr2) \
1870	{ \	1713	{ \
1871	X_LOCK (wrklock); \	1714	X_LOCK (EIO_POOL->wrklock); \
1872	req->flags |= EIO_FLAG_PTR2_FREE; \	1715	req->flags |= EIO_FLAG_PTR2_FREE; \
1873	X_UNLOCK (wrklock); \	1716	X_UNLOCK (EIO_POOL->wrklock); \
1874	req->ptr2 = malloc (len); \	1717	req->ptr2 = malloc (len); \
1875	if (!req->ptr2) \	1718	if (!req->ptr2) \
1876	{ \	1719	{ \
1877	errno = ENOMEM; \	1720	errno = ENOMEM; \
1878	req->result = -1; \	1721	req->result = -1; \
1879	break; \	1722	break; \
1880	} \	1723	} \
1881	}	1724	}
1882		1725
1883	X_THREAD_PROC (etp_proc)
1884	{
1885	ETP_REQ *req;
1886	struct timespec ts;
1887	etp_worker *self = (etp_worker *)thr_arg;
1888
1889	/* try to distribute timeouts somewhat evenly */
1890	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1891
1892	for (;;)
1893	{
1894	ts.tv_sec = 0;
1895
1896	X_LOCK (reqlock);
1897
1898	for (;;)
1899	{
1900	self->req = req = reqq_shift (&req_queue);
1901
1902	if (req)
1903	break;
1904
1905	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1906	{
1907	X_UNLOCK (reqlock);
1908	X_LOCK (wrklock);
1909	--started;
1910	X_UNLOCK (wrklock);
1911	goto quit;
1912	}
1913
1914	++idle;
1915
1916	if (idle <= max_idle)
1917	/* we are allowed to idle, so do so without any timeout */
1918	X_COND_WAIT (reqwait, reqlock);
1919	else
1920	{
1921	/* initialise timeout once */
1922	if (!ts.tv_sec)
1923	ts.tv_sec = time (0) + idle_timeout;
1924
1925	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1926	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1927	}
1928
1929	--idle;
1930	}
1931
1932	--nready;
1933
1934	X_UNLOCK (reqlock);
1935
1936	if (req->type < 0)
1937	goto quit;
1938
1939	ETP_EXECUTE (self, req);
1940
1941	X_LOCK (reslock);
1942
1943	++npending;
1944
1945	if (!reqq_push (&res_queue, req) && want_poll_cb)
1946	want_poll_cb ();
1947
1948	self->req = 0;
1949	etp_worker_clear (self);
1950
1951	X_UNLOCK (reslock);
1952	}
1953
1954	quit:
1955	X_LOCK (wrklock);
1956	etp_worker_free (self);
1957	X_UNLOCK (wrklock);
1958
1959	return 0;
1960	}
1961
1962	/*****************************************************************************/	1726	/*****************************************************************************/
1963		1727
1964	int ecb_cold	1728	int ecb_cold
1965	eio_init (void (*want_poll)(void), void (*done_poll)(void))	1729	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1966	{	1730	{
1967	#if !HAVE_PREADWRITE	1731	eio_want_poll_cb = want_poll;
1968	X_MUTEX_CREATE (preadwritelock);	1732	eio_done_poll_cb = done_poll;
1969	#endif
1970		1733
1971	return etp_init (want_poll, done_poll);	1734	return etp_init (EIO_POOL, 0, 0, 0);
1972	}	1735	}
1973		1736
1974	ecb_inline void	1737	ecb_inline void
1975	eio_api_destroy (eio_req *req)	1738	eio_api_destroy (eio_req *req)
1976	{	1739	{
1977	free (req);	1740	free (req);
1978	}	1741	}
1979		1742
1980	#define REQ(rtype) \	1743	#define REQ(rtype) \
1981	eio_req *req; \	1744	eio_req *req; \
1982	\	1745	\
1983	req = (eio_req *)calloc (1, sizeof *req); \	1746	req = (eio_req *)calloc (1, sizeof *req); \
1984	if (!req) \	1747	if (!req) \
1985	return 0; \	1748	return 0; \
…		…
1999	{ \	1762	{ \
2000	eio_api_destroy (req); \	1763	eio_api_destroy (req); \
2001	return 0; \	1764	return 0; \
2002	}	1765	}
2003		1766
		1767	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		1768
2004	static void	1769	static void
2005	eio_execute (etp_worker *self, eio_req *req)	1770	eio_execute (etp_worker *self, eio_req *req)
2006	{	1771	{
		1772	#if HAVE_AT
		1773	int dirfd;
		1774	#else
		1775	const char *path;
		1776	#endif
		1777
2007	if (ecb_expect_false (EIO_CANCELLED (req)))	1778	if (ecb_expect_false (EIO_CANCELLED (req)))
2008	{	1779	{
2009	req->result = -1;	1780	req->result = -1;
2010	req->errorno = ECANCELED;	1781	req->errorno = ECANCELED;
2011	return;	1782	return;
2012	}	1783	}
2013		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
2014	switch (req->type)	1801	switch (req->type)
2015	{	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;
2016	case EIO_READ: ALLOC (req->size);	1810	case EIO_READ: ALLOC (req->size);
2017	req->result = req->offs >= 0	1811	req->result = req->offs >= 0
2018	? pread (req->int1, req->ptr2, req->size, req->offs)	1812	? pread (req->int1, req->ptr2, req->size, req->offs)
2019	: read (req->int1, req->ptr2, req->size); break;	1813	: read (req->int1, req->ptr2, req->size); break;
2020	case EIO_WRITE: req->result = req->offs >= 0	1814	case EIO_WRITE: req->result = req->offs >= 0
2021	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1815	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2022	: write (req->int1, req->ptr2, req->size); break;	1816	: write (req->int1, req->ptr2, req->size); break;
2023		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
2024	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;
2025	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	1822	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2026		1823
		1824	#if HAVE_AT
		1825
2027	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1826	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2028	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;
2029	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));
2030	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
2031	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1932	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2032	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	1933	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2033		1934
2034	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2035	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2036	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1935	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2037	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1936	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2038		1937
2039	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2040	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;
2041	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2042	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;
2043	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2044	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	1940	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2045		1941
2046	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2047	case EIO_CLOSE: req->result = close (req->int1); break;	1942	case EIO_CLOSE: req->result = close (req->int1); break;
2048	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	1943	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2049	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2050	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2051	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2052	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2053	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2054	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2055	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2056
2057	case EIO_REALPATH: eio__realpath (req, self); break;
2058
2059	case EIO_READLINK: ALLOC (PATH_MAX);
2060	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2061
2062	case EIO_SYNC: req->result = 0; sync (); break;	1944	case EIO_SYNC: req->result = 0; sync (); break;
2063	case EIO_FSYNC: req->result = fsync (req->int1); break;	1945	case EIO_FSYNC: req->result = fsync (req->int1); break;
2064	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;
2065	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;
2066	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	1950	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2067	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;
2068	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	1952	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2069	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2070	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;
2071		1954
2072	case EIO_READDIR: eio__scandir (req, self); break;	1955	case EIO_READDIR: eio__scandir (req, self); break;
2073		1956
2074	case EIO_BUSY:	1957	case EIO_BUSY:
…		…
2084	req->result = select (0, 0, 0, 0, &tv);	1967	req->result = select (0, 0, 0, 0, &tv);
2085	}	1968	}
2086	#endif	1969	#endif
2087	break;	1970	break;
2088		1971
2089	case EIO_UTIME:	1972	#if 0
2090	case EIO_FUTIME:
2091	{
2092	struct timeval tv[2];
2093	struct timeval *times;
2094
2095	if (req->nv1 != -1. || req->nv2 != -1.)
2096	{
2097	tv[0].tv_sec = req->nv1;
2098	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2099	tv[1].tv_sec = req->nv2;
2100	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2101
2102	times = tv;
2103	}
2104	else
2105	times = 0;
2106
2107	req->result = req->type == EIO_FUTIME
2108	? futimes (req->int1, times)
2109	: utimes (req->ptr1, times);
2110	}
2111	break;
2112
2113	case EIO_GROUP:	1973	case EIO_GROUP:
2114	abort (); /* handled in eio_request */	1974	abort (); /* handled in eio_request */
		1975	#endif
2115		1976
2116	case EIO_NOP:	1977	case EIO_NOP:
2117	req->result = 0;	1978	req->result = 0;
2118	break;	1979	break;
2119		1980
2120	case EIO_CUSTOM:	1981	case EIO_CUSTOM:
2121	req->feed (req);	1982	req->feed (req);
2122	break;	1983	break;
2123		1984
2124	default:	1985	default:
2125	errno = ENOSYS;
2126	req->result = -1;	1986	req->result = EIO_ENOSYS ();
2127	break;	1987	break;
2128	}	1988	}
2129		1989
2130	req->errorno = errno;	1990	req->errorno = errno;
2131	}	1991	}
2132		1992
2133	#ifndef EIO_NO_WRAPPERS	1993	#ifndef EIO_NO_WRAPPERS
2134		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
2135	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2005	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2136	{	2006	{
2137	REQ (EIO_NOP); SEND;	2007	REQ (EIO_NOP); SEND;
2138	}	2008	}
2139		2009
…		…
2155	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)
2156	{	2026	{
2157	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;
2158	}	2028	}
2159		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
2160	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)
2161	{	2046	{
2162	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;
2163	}	2048	}
2164		2049
…		…
2170	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)
2171	{	2056	{
2172	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2057	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2173	}	2058	}
2174		2059
2175	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2176	{
2177	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2178	}
2179
2180	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)
2181	{	2061	{
2182	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;
2183	}	2063	}
2184		2064
2185	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2186	{
2187	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2188	}
2189
2190	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)
2191	{	2066	{
2192	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2067	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2193	}	2068	}
2194		2069
2195	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)
2196	{	2071	{
2197	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;
2198	}	2073	}
2199		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
2200	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)
2201	{	2081	{
2202	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;
2203	}	2083	}
2204		2084
2205	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)
2206	{	2086	{
2207	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;
2208	}	2098	}
2209		2099
2210	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)
2211	{	2101	{
2212	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2102	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2400	void	2290	void
2401	eio_grp_add (eio_req *grp, eio_req *req)	2291	eio_grp_add (eio_req *grp, eio_req *req)
2402	{	2292	{
2403	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));
2404		2294
2405	grp->flags |= EIO_FLAG_GROUPADD;	2295	grp->flags |= ETP_FLAG_GROUPADD;
2406		2296
2407	++grp->size;	2297	++grp->size;
2408	req->grp = grp;	2298	req->grp = grp;
2409		2299
2410	req->grp_prev = 0;	2300	req->grp_prev = 0;

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