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Comparing libeio/eio.c (file contents):
Revision 1.93 by root, Mon Jul 18 01:27:03 2011 UTC vs.
Revision 1.141 by root, Tue Feb 23 19:47:44 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,
…		…
43		43
44	#include "eio.h"	44	#include "eio.h"
45	#include "ecb.h"	45	#include "ecb.h"
46		46
47	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
48	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define X_STACKSIZE EIO_STACKSIZE
49	#endif	49	#endif
50	#include "xthread.h"	50	#include "xthread.h"
51		51
52	#include <errno.h>	52	#include <errno.h>
53	#include <stddef.h>	53	#include <stddef.h>
…		…
71	#endif	71	#endif
72	#ifndef ELOOP	72	#ifndef ELOOP
73	# define ELOOP EDOM	73	# define ELOOP EDOM
74	#endif	74	#endif
75		75
		76	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		77	# define ENOTSOCK WSAENOTSOCK
		78	#endif
		79
76	static void eio_destroy (eio_req *req);	80	static void eio_destroy (eio_req *req);
77		81
78	#ifndef EIO_FINISH	82	#ifndef EIO_FINISH
79	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	83	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
80	#endif	84	#endif
…		…
101	#ifdef _WIN32	105	#ifdef _WIN32
102		106
103	#undef PAGESIZE	107	#undef PAGESIZE
104	#define PAGESIZE 4096 /* GetSystemInfo? */	108	#define PAGESIZE 4096 /* GetSystemInfo? */
105		109
		110	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		111
106	#ifdef EIO_STRUCT_STATI64	112	#ifdef EIO_STRUCT_STATI64
		113	/* look at perl's non-sloppy stat */
107	#define stat(path,buf) _stati64 (path,buf)	114	#define stat(path,buf) _stati64 (path,buf)
108	#define fstat(fd,buf) _fstati64 (path,buf)	115	#define fstat(fd,buf) _fstati64 (fd,buf)
109	#endif	116	#endif
110	#define lstat(path,buf) stat (path,buf)	117	#define lstat(path,buf) stat (path,buf)
111	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))	118	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
112	#define mkdir(path,mode) _mkdir (path)	119	#define mkdir(path,mode) _mkdir (path)
113	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))	120	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
114		121
115	#define chmod(path,mode) _chmod (path, mode)	122	#define chmod(path,mode) _chmod (path, mode)
116	#define dup(fd) _dup (fd)	123	#define dup(fd) _dup (fd)
117	#define dup2(fd1,fd2) _dup2 (fd1, fd2)	124	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		125	#define pipe(fds) _pipe (fds, 4096, O_BINARY)
118		126
		127	#define fcntl(fd,cmd,arg) EIO_ENOSYS ()
		128	#define ioctl(fd,cmd,arg) EIO_ENOSYS ()
119	#define fchmod(fd,mode) EIO_ENOSYS ()	129	#define fchmod(fd,mode) EIO_ENOSYS ()
120	#define chown(path,uid,gid) EIO_ENOSYS ()	130	#define chown(path,uid,gid) EIO_ENOSYS ()
121	#define fchown(fd,uid,gid) EIO_ENOSYS ()	131	#define fchown(fd,uid,gid) EIO_ENOSYS ()
122	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	132	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
123	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	133	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
…		…
125	#define sync() EIO_ENOSYS ()	135	#define sync() EIO_ENOSYS ()
126	#define readlink(path,buf,s) EIO_ENOSYS ()	136	#define readlink(path,buf,s) EIO_ENOSYS ()
127	#define statvfs(path,buf) EIO_ENOSYS ()	137	#define statvfs(path,buf) EIO_ENOSYS ()
128	#define fstatvfs(fd,buf) EIO_ENOSYS ()	138	#define fstatvfs(fd,buf) EIO_ENOSYS ()
129		139
		140	#define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
		141	#define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
		142
		143	#if __GNUC__
		144	typedef long long eio_off_t; /* signed for compatibility to msvc */
		145	#else
		146	typedef __int64 eio_off_t; /* unsigned not supported by msvc */
		147	#endif
		148
		149	static eio_ssize_t
		150	eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		151	{
		152	OVERLAPPED o = { 0 };
		153	DWORD got;
		154
		155	o.Offset = offset;
		156	o.OffsetHigh = offset >> 32;
		157
		158	return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		159	? got : -1;
		160	}
		161
		162	static eio_ssize_t
		163	eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		164	{
		165	OVERLAPPED o = { 0 };
		166	DWORD got;
		167
		168	o.Offset = offset;
		169	o.OffsetHigh = offset >> 32;
		170
		171	return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		172	? got : -1;
		173	}
		174
		175	/* rename() uses MoveFile, which fails to overwrite */
		176	#define rename(old,neu) eio__rename (old, neu)
		177
		178	static int
		179	eio__rename (const char *old, const char *neu)
		180	{
		181	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		182	return 0;
		183
		184	/* should steal _dosmaperr */
		185	switch (GetLastError ())
		186	{
		187	case ERROR_FILE_NOT_FOUND:
		188	case ERROR_PATH_NOT_FOUND:
		189	case ERROR_INVALID_DRIVE:
		190	case ERROR_NO_MORE_FILES:
		191	case ERROR_BAD_NETPATH:
		192	case ERROR_BAD_NET_NAME:
		193	case ERROR_BAD_PATHNAME:
		194	case ERROR_FILENAME_EXCED_RANGE:
		195	errno = ENOENT;
		196	break;
		197
		198	default:
		199	errno = EACCES;
		200	break;
		201	}
		202
		203	return -1;
		204	}
		205
130	/* we could even stat and see if it exists */	206	/* we could even stat and see if it exists */
131	static int	207	static int
132	symlink (const char *old, const char *neu)	208	symlink (const char *old, const char *neu)
133	{	209	{
134	#if WINVER >= 0x0600	210	#if WINVER >= 0x0600
…		…
140	#endif	216	#endif
141		217
142	return EIO_ERRNO (ENOENT, -1);	218	return EIO_ERRNO (ENOENT, -1);
143	}	219	}
144		220
145	/* POSIX API only */	221	/* POSIX API only, causing trouble for win32 apps */
146	#define CreateHardLink(neu,old,flags) 0	222	#define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
147	#define CreateSymbolicLink(neu,old,flags) 0	223	#define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
148		224
149	struct statvfs	225	struct statvfs
150	{	226	{
151	int dummy;	227	int dummy;
152	};	228	};
…		…
158		234
159	#else	235	#else
160		236
161	#include <sys/time.h>	237	#include <sys/time.h>
162	#include <sys/select.h>	238	#include <sys/select.h>
163	#include <sys/statvfs.h>
164	#include <unistd.h>	239	#include <unistd.h>
165	#include <utime.h>
166	#include <signal.h>	240	#include <signal.h>
167	#include <dirent.h>	241	#include <dirent.h>
		242
		243	#ifdef ANDROID
		244	#include <sys/vfs.h>
		245	#define statvfs statfs
		246	#define fstatvfs fstatfs
		247	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
		248	#else
		249	#include <sys/statvfs.h>
		250	#endif
168		251
169	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	252	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
170	#include <sys/mman.h>	253	#include <sys/mman.h>
171	#endif	254	#endif
172		255
173	#define D_NAME(entp) entp->d_name	256	#define D_NAME(entp) entp->d_name
174		257
175	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	258	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
176	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	259	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
177	#define _DIRENT_HAVE_D_TYPE /* sigh */	260	#define _DIRENT_HAVE_D_TYPE /* sigh */
178	#define D_INO(de) (de)->d_fileno	261	#define D_INO(de) (de)->d_fileno
179	#define D_NAMLEN(de) (de)->d_namlen	262	#define D_NAMLEN(de) (de)->d_namlen
180	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	263	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
181	#define D_INO(de) (de)->d_ino	264	#define D_INO(de) (de)->d_ino
…		…
192		275
193	#ifndef EIO_STRUCT_DIRENT	276	#ifndef EIO_STRUCT_DIRENT
194	#define EIO_STRUCT_DIRENT struct dirent	277	#define EIO_STRUCT_DIRENT struct dirent
195	#endif	278	#endif
196		279
		280	#endif
		281
		282	#if HAVE_UTIMES
		283	# include <utime.h>
		284	#endif
		285
		286	#if HAVE_SYS_SYSCALL_H
		287	# include <sys/syscall.h>
		288	#endif
		289
		290	#if HAVE_SYS_PRCTL_H
		291	# include <sys/prctl.h>
197	#endif	292	#endif
198		293
199	#if HAVE_SENDFILE	294	#if HAVE_SENDFILE
200	# if __linux	295	# if __linux
201	# include <sys/sendfile.h>	296	# include <sys/sendfile.h>
…		…
232	#endif	327	#endif
233		328
234	/* buffer size for various temporary buffers */	329	/* buffer size for various temporary buffers */
235	#define EIO_BUFSIZE 65536	330	#define EIO_BUFSIZE 65536
236		331
237	#define dBUF \	332	#define dBUF \
238	char *eio_buf; \
239	ETP_WORKER_LOCK (self); \
240	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	333	char *eio_buf = malloc (EIO_BUFSIZE); \
241	ETP_WORKER_UNLOCK (self); \
242	errno = ENOMEM; \	334	errno = ENOMEM; \
243	if (!eio_buf) \	335	if (!eio_buf) \
244	return -1;	336	return -1
245		337
246	#define EIO_TICKS ((1000000 + 1023) >> 10)	338	#define FUBd \
		339	free (eio_buf)
		340
		341	/*****************************************************************************/
		342
		343	struct etp_tmpbuf;
		344
		345	#if _POSIX_VERSION >= 200809L
		346	#define HAVE_AT 1
		347	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		348	#ifndef O_SEARCH
		349	#define O_SEARCH O_RDONLY
		350	#endif
		351	#else
		352	#define HAVE_AT 0
		353	static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
		354	#endif
		355
		356	struct eio_pwd
		357	{
		358	#if HAVE_AT
		359	int fd;
		360	#endif
		361	int len;
		362	char str[1]; /* actually, a 0-terminated canonical path */
		363	};
		364
		365	/*****************************************************************************/
247		366
248	#define ETP_PRI_MIN EIO_PRI_MIN	367	#define ETP_PRI_MIN EIO_PRI_MIN
249	#define ETP_PRI_MAX EIO_PRI_MAX	368	#define ETP_PRI_MAX EIO_PRI_MAX
250		369
		370	#define ETP_TYPE_QUIT -1
		371	#define ETP_TYPE_GROUP EIO_GROUP
		372
		373	static void eio_nop_callback (void) { }
		374	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		375	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		376
		377	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		378	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		379
251	struct etp_worker;	380	struct etp_worker;
252
253	#define ETP_REQ eio_req	381	#define ETP_REQ eio_req
254	#define ETP_DESTROY(req) eio_destroy (req)	382	#define ETP_DESTROY(req) eio_destroy (req)
255	static int eio_finish (eio_req *req);	383	static int eio_finish (eio_req *req);
256	#define ETP_FINISH(req) eio_finish (req)	384	#define ETP_FINISH(req) eio_finish (req)
257	static void eio_execute (struct etp_worker *self, eio_req *req);	385	static void eio_execute (struct etp_worker *self, eio_req *req);
258	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	386	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
259		387
260	#define ETP_WORKER_CLEAR(req) \	388	#include "etp.c"
261	if (wrk->dbuf) \
262	{ \
263	free (wrk->dbuf); \
264	wrk->dbuf = 0; \
265	}
266		389
267	#define ETP_WORKER_COMMON \	390	static struct etp_pool eio_pool;
268	void *dbuf;	391	#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;
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; /* 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 int ecb_cold
459	etp_init (void (*want_poll)(void), void (*done_poll)(void))
460	{
461	X_MUTEX_CREATE (wrklock);
462	X_MUTEX_CREATE (reslock);
463	X_MUTEX_CREATE (reqlock);
464	X_COND_CREATE (reqwait);
465
466	reqq_init (&req_queue);
467	reqq_init (&res_queue);
468
469	wrk_first.next =
470	wrk_first.prev = &wrk_first;
471
472	started = 0;
473	idle = 0;
474	nreqs = 0;
475	nready = 0;
476	npending = 0;
477
478	want_poll_cb = want_poll;
479	done_poll_cb = done_poll;
480
481	return 0;
482	}
483
484	X_THREAD_PROC (etp_proc);
485
486	static void ecb_cold
487	etp_start_thread (void)
488	{
489	etp_worker *wrk = calloc (1, sizeof (etp_worker));
490
491	/*TODO*/
492	assert (("unable to allocate worker thread data", wrk));
493
494	X_LOCK (wrklock);
495
496	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
497	{
498	wrk->prev = &wrk_first;
499	wrk->next = wrk_first.next;
500	wrk_first.next->prev = wrk;
501	wrk_first.next = wrk;
502	++started;
503	}
504	else
505	free (wrk);
506
507	X_UNLOCK (wrklock);
508	}
509
510	static void
511	etp_maybe_start_thread (void)
512	{
513	if (ecb_expect_true (etp_nthreads () >= wanted))
514	return;
515
516	/* todo: maybe use idle here, but might be less exact */
517	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
518	return;
519
520	etp_start_thread ();
521	}
522
523	static void ecb_cold
524	etp_end_thread (void)
525	{
526	eio_req *req = calloc (1, sizeof (eio_req));
527
528	req->type = -1;
529	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
530
531	X_LOCK (reqlock);
532	reqq_push (&req_queue, req);
533	X_COND_SIGNAL (reqwait);
534	X_UNLOCK (reqlock);
535
536	X_LOCK (wrklock);
537	--started;
538	X_UNLOCK (wrklock);
539	}
540
541	static int
542	etp_poll (void)
543	{
544	unsigned int maxreqs;
545	unsigned int maxtime;
546	struct timeval tv_start, tv_now;
547
548	X_LOCK (reslock);
549	maxreqs = max_poll_reqs;
550	maxtime = max_poll_time;
551	X_UNLOCK (reslock);
552
553	if (maxtime)
554	gettimeofday (&tv_start, 0);
555
556	for (;;)
557	{
558	ETP_REQ *req;
559
560	etp_maybe_start_thread ();
561
562	X_LOCK (reslock);
563	req = reqq_shift (&res_queue);
564
565	if (req)
566	{
567	--npending;
568
569	if (!res_queue.size && done_poll_cb)
570	done_poll_cb ();
571	}
572
573	X_UNLOCK (reslock);
574
575	if (!req)
576	return 0;
577
578	X_LOCK (reqlock);
579	--nreqs;
580	X_UNLOCK (reqlock);
581
582	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
583	{
584	req->int1 = 1; /* mark request as delayed */
585	continue;
586	}
587	else
588	{
589	int res = ETP_FINISH (req);
590	if (ecb_expect_false (res))
591	return res;
592	}
593
594	if (ecb_expect_false (maxreqs && !--maxreqs))
595	break;
596
597	if (maxtime)
598	{
599	gettimeofday (&tv_now, 0);
600
601	if (tvdiff (&tv_start, &tv_now) >= maxtime)
602	break;
603	}
604	}
605
606	errno = EAGAIN;
607	return -1;
608	}
609
610	static void
611	etp_cancel (ETP_REQ *req)
612	{
613	req->cancelled = 1;
614
615	eio_grp_cancel (req);
616	}
617
618	static void
619	etp_submit (ETP_REQ *req)
620	{
621	req->pri -= ETP_PRI_MIN;
622
623	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
624	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
625
626	if (ecb_expect_false (req->type == EIO_GROUP))
627	{
628	/* I hope this is worth it :/ */
629	X_LOCK (reqlock);
630	++nreqs;
631	X_UNLOCK (reqlock);
632
633	X_LOCK (reslock);
634
635	++npending;
636
637	if (!reqq_push (&res_queue, req) && want_poll_cb)
638	want_poll_cb ();
639
640	X_UNLOCK (reslock);
641	}
642	else
643	{
644	X_LOCK (reqlock);
645	++nreqs;
646	++nready;
647	reqq_push (&req_queue, req);
648	X_COND_SIGNAL (reqwait);
649	X_UNLOCK (reqlock);
650
651	etp_maybe_start_thread ();
652	}
653	}
654
655	static void ecb_cold
656	etp_set_max_poll_time (double nseconds)
657	{
658	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
659	max_poll_time = nseconds * EIO_TICKS;
660	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
661	}
662
663	static void ecb_cold
664	etp_set_max_poll_reqs (unsigned int maxreqs)
665	{
666	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
667	max_poll_reqs = maxreqs;
668	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
669	}
670
671	static void ecb_cold
672	etp_set_max_idle (unsigned int nthreads)
673	{
674	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
675	max_idle = nthreads;
676	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
677	}
678
679	static void ecb_cold
680	etp_set_idle_timeout (unsigned int seconds)
681	{
682	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
683	idle_timeout = seconds;
684	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
685	}
686
687	static void ecb_cold
688	etp_set_min_parallel (unsigned int nthreads)
689	{
690	if (wanted < nthreads)
691	wanted = nthreads;
692	}
693
694	static void ecb_cold
695	etp_set_max_parallel (unsigned int nthreads)
696	{
697	if (wanted > nthreads)
698	wanted = nthreads;
699
700	while (started > wanted)
701	etp_end_thread ();
702	}
703		392
704	/*****************************************************************************/	393	/*****************************************************************************/
705		394
706	static void	395	static void
707	grp_try_feed (eio_req *grp)	396	grp_try_feed (eio_req *grp)
708	{	397	{
709	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	398	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
710	{	399	{
711	grp->flags &= ~EIO_FLAG_GROUPADD;	400	grp->flags &= ~ETP_FLAG_GROUPADD;
712		401
713	EIO_FEED (grp);	402	EIO_FEED (grp);
714		403
715	/* stop if no progress has been made */	404	/* stop if no progress has been made */
716	if (!(grp->flags & EIO_FLAG_GROUPADD))	405	if (!(grp->flags & ETP_FLAG_GROUPADD))
717	{	406	{
718	grp->feed = 0;	407	grp->feed = 0;
719	break;	408	break;
720	}	409	}
721	}	410	}
…		…
728		417
729	/* call feeder, if applicable */	418	/* call feeder, if applicable */
730	grp_try_feed (grp);	419	grp_try_feed (grp);
731		420
732	/* finish, if done */	421	/* finish, if done */
733	if (!grp->size && grp->int1)	422	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
734	return eio_finish (grp);	423	return eio_finish (grp);
735	else	424	else
736	return 0;	425	return 0;
737	}	426	}
738		427
…		…
774	}	463	}
775		464
776	void	465	void
777	eio_grp_cancel (eio_req *grp)	466	eio_grp_cancel (eio_req *grp)
778	{	467	{
779	for (grp = grp->grp_first; grp; grp = grp->grp_next)	468	etp_grp_cancel (EIO_POOL, grp);
780	eio_cancel (grp);
781	}	469	}
782		470
783	void	471	void
784	eio_cancel (eio_req *req)	472	eio_cancel (eio_req *req)
785	{	473	{
786	etp_cancel (req);	474	etp_cancel (EIO_POOL, req);
787	}	475	}
788		476
789	void	477	void
790	eio_submit (eio_req *req)	478	eio_submit (eio_req *req)
791	{	479	{
792	etp_submit (req);	480	etp_submit (EIO_POOL, req);
793	}	481	}
794		482
795	unsigned int	483	unsigned int
796	eio_nreqs (void)	484	eio_nreqs (void)
797	{	485	{
798	return etp_nreqs ();	486	return etp_nreqs (EIO_POOL);
799	}	487	}
800		488
801	unsigned int	489	unsigned int
802	eio_nready (void)	490	eio_nready (void)
803	{	491	{
804	return etp_nready ();	492	return etp_nready (EIO_POOL);
805	}	493	}
806		494
807	unsigned int	495	unsigned int
808	eio_npending (void)	496	eio_npending (void)
809	{	497	{
810	return etp_npending ();	498	return etp_npending (EIO_POOL);
811	}	499	}
812		500
813	unsigned int ecb_cold	501	unsigned int ecb_cold
814	eio_nthreads (void)	502	eio_nthreads (void)
815	{	503	{
816	return etp_nthreads ();	504	return etp_nthreads (EIO_POOL);
817	}	505	}
818		506
819	void ecb_cold	507	void ecb_cold
820	eio_set_max_poll_time (double nseconds)	508	eio_set_max_poll_time (double nseconds)
821	{	509	{
822	etp_set_max_poll_time (nseconds);	510	etp_set_max_poll_time (EIO_POOL, nseconds);
823	}	511	}
824		512
825	void ecb_cold	513	void ecb_cold
826	eio_set_max_poll_reqs (unsigned int maxreqs)	514	eio_set_max_poll_reqs (unsigned int maxreqs)
827	{	515	{
828	etp_set_max_poll_reqs (maxreqs);	516	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
829	}	517	}
830		518
831	void ecb_cold	519	void ecb_cold
832	eio_set_max_idle (unsigned int nthreads)	520	eio_set_max_idle (unsigned int nthreads)
833	{	521	{
834	etp_set_max_idle (nthreads);	522	etp_set_max_idle (EIO_POOL, nthreads);
835	}	523	}
836		524
837	void ecb_cold	525	void ecb_cold
838	eio_set_idle_timeout (unsigned int seconds)	526	eio_set_idle_timeout (unsigned int seconds)
839	{	527	{
840	etp_set_idle_timeout (seconds);	528	etp_set_idle_timeout (EIO_POOL, seconds);
841	}	529	}
842		530
843	void ecb_cold	531	void ecb_cold
844	eio_set_min_parallel (unsigned int nthreads)	532	eio_set_min_parallel (unsigned int nthreads)
845	{	533	{
846	etp_set_min_parallel (nthreads);	534	etp_set_min_parallel (EIO_POOL, nthreads);
847	}	535	}
848		536
849	void ecb_cold	537	void ecb_cold
850	eio_set_max_parallel (unsigned int nthreads)	538	eio_set_max_parallel (unsigned int nthreads)
851	{	539	{
852	etp_set_max_parallel (nthreads);	540	etp_set_max_parallel (EIO_POOL, nthreads);
853	}	541	}
854		542
855	int eio_poll (void)	543	int eio_poll (void)
856	{	544	{
857	return etp_poll ();	545	return etp_poll (EIO_POOL);
858	}	546	}
859		547
860	/*****************************************************************************/	548	/*****************************************************************************/
861	/* work around various missing functions */	549	/* work around various missing functions */
862
863	#if !HAVE_PREADWRITE
864	# undef pread
865	# undef pwrite
866	# define pread eio__pread
867	# define pwrite eio__pwrite
868
869	static eio_ssize_t
870	eio__pread (int fd, void *buf, size_t count, off_t offset)
871	{
872	eio_ssize_t res;
873	off_t ooffset;
874
875	X_LOCK (preadwritelock);
876	ooffset = lseek (fd, 0, SEEK_CUR);
877	lseek (fd, offset, SEEK_SET);
878	res = read (fd, buf, count);
879	lseek (fd, ooffset, SEEK_SET);
880	X_UNLOCK (preadwritelock);
881
882	return res;
883	}
884
885	static eio_ssize_t
886	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
887	{
888	eio_ssize_t res;
889	off_t ooffset;
890
891	X_LOCK (preadwritelock);
892	ooffset = lseek (fd, 0, SEEK_CUR);
893	lseek (fd, offset, SEEK_SET);
894	res = write (fd, buf, count);
895	lseek (fd, ooffset, SEEK_SET);
896	X_UNLOCK (preadwritelock);
897
898	return res;
899	}
900	#endif
901		550
902	#ifndef HAVE_UTIMES	551	#ifndef HAVE_UTIMES
903		552
904	# undef utimes	553	# undef utimes
905	# define utimes(path,times) eio__utimes (path, times)	554	# define utimes(path,times) eio__utimes (path, times)
…		…
938		587
939	#if !HAVE_FDATASYNC	588	#if !HAVE_FDATASYNC
940	# undef fdatasync	589	# undef fdatasync
941	# define fdatasync(fd) fsync (fd)	590	# define fdatasync(fd) fsync (fd)
942	#endif	591	#endif
		592
		593	static int
		594	eio__syncfs (int fd)
		595	{
		596	int res;
		597
		598	#if HAVE_SYS_SYNCFS
		599	res = (int)syscall (__NR_syncfs, (int)(fd));
		600	#else
		601	res = EIO_ENOSYS ();
		602	#endif
		603
		604	if (res < 0 && errno == ENOSYS && fd >= 0)
		605	sync ();
		606
		607	return res;
		608	}
943		609
944	/* sync_file_range always needs emulation */	610	/* sync_file_range always needs emulation */
945	static int	611	static int
946	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	612	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
947	{	613	{
…		…
970	}	636	}
971		637
972	static int	638	static int
973	eio__fallocate (int fd, int mode, off_t offset, size_t len)	639	eio__fallocate (int fd, int mode, off_t offset, size_t len)
974	{	640	{
975	#if HAVE_FALLOCATE	641	#if HAVE_LINUX_FALLOCATE
976	return fallocate (fd, mode, offset, len);	642	return fallocate (fd, mode, offset, len);
977	#else	643	#else
978	errno = ENOSYS;	644	return EIO_ENOSYS ();
979	return -1;
980	#endif	645	#endif
981	}	646	}
982		647
983	#if !HAVE_READAHEAD	648	#if !HAVE_READAHEAD
984	# undef readahead	649	# undef readahead
…		…
997	pread (fd, eio_buf, len, offset);	662	pread (fd, eio_buf, len, offset);
998	offset += len;	663	offset += len;
999	todo -= len;	664	todo -= len;
1000	}	665	}
1001		666
1002	errno = 0;	667	FUBd;
		668
		669	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		670	/* but not for e.g. EIO or eof, so we also never fail */
1003	return count;	671	return 0;
1004	}	672	}
1005		673
1006	#endif	674	#endif
1007		675
1008	/* sendfile always needs emulation */	676	/* sendfile always needs emulation */
1009	static eio_ssize_t	677	static eio_ssize_t
1010	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	678	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
1011	{	679	{
1012	eio_ssize_t written = 0;	680	eio_ssize_t written = 0;
1013	eio_ssize_t res;	681	eio_ssize_t res;
1014		682
1015	if (!count)	683	if (!count)
…		…
1043		711
1044	/* according to source inspection, this is correct, and useful behaviour */	712	/* according to source inspection, this is correct, and useful behaviour */
1045	if (sbytes)	713	if (sbytes)
1046	res = sbytes;	714	res = sbytes;
1047		715
1048	# elif defined (__APPLE__)	716	# elif defined __APPLE__
1049	off_t sbytes = count;	717	off_t sbytes = count;
1050	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	718	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1051		719
1052	/* according to the manpage, sbytes is always valid */	720	/* according to the manpage, sbytes is always valid */
1053	if (sbytes)	721	if (sbytes)
…		…
1080	HANDLE h = TO_SOCKET (ifd);	748	HANDLE h = TO_SOCKET (ifd);
1081	SetFilePointer (h, offset, 0, FILE_BEGIN);	749	SetFilePointer (h, offset, 0, FILE_BEGIN);
1082	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	750	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1083		751
1084	#else	752	#else
1085	res = -1;	753	res = EIO_ENOSYS ();
1086	errno = ENOSYS;
1087	#endif	754	#endif
1088		755
1089	/* we assume sendfile can copy at least 128mb in one go */	756	/* we assume sendfile can copy at least 128mb in one go */
1090	if (res <= 128 * 1024 * 1024)	757	if (res <= 128 * 1024 * 1024)
1091	{	758	{
…		…
1151		818
1152	offset += cnt;	819	offset += cnt;
1153	res += cnt;	820	res += cnt;
1154	count -= cnt;	821	count -= cnt;
1155	}	822	}
		823
		824	FUBd;
1156	}	825	}
1157		826
1158	return res;	827	return res;
1159	}	828	}
1160		829
…		…
1276		945
1277	/*****************************************************************************/	946	/*****************************************************************************/
1278	/* requests implemented outside eio_execute, because they are so large */	947	/* requests implemented outside eio_execute, because they are so large */
1279		948
1280	static void	949	static void
1281	eio__realpath (eio_req *req, etp_worker *self)	950	eio__lseek (eio_req *req)
1282	{	951	{
1283	char *rel = req->ptr1;	952	/* this usually gets optimised away completely, or your compiler sucks, */
		953	/* or the whence constants really are not 0, 1, 2 */
		954	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		955	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		956	: req->int2 == EIO_SEEK_END ? SEEK_END
		957	: req->int2;
		958
		959	req->offs = lseek (req->int1, req->offs, whence);
		960	req->result = req->offs == (off_t)-1 ? -1 : 0;
		961	}
		962
		963	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		964	static int
		965	eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		966	{
1284	char *res;	967	char *res;
		968	const char *rel = path;
1285	char *tmp1, *tmp2;	969	char *tmp1, *tmp2;
1286	#if SYMLOOP_MAX > 32	970	#if SYMLOOP_MAX > 32
1287	int symlinks = SYMLOOP_MAX;	971	int symlinks = SYMLOOP_MAX;
1288	#else	972	#else
1289	int symlinks = 32;	973	int symlinks = 32;
1290	#endif	974	#endif
1291		975
1292	req->result = -1;
1293
1294	errno = EINVAL;	976	errno = EINVAL;
1295	if (!rel)	977	if (!rel)
1296	return;	978	return -1;
1297		979
1298	errno = ENOENT;	980	errno = ENOENT;
1299	if (!*rel)	981	if (!*rel)
1300	return;	982	return -1;
1301		983
1302	if (!req->ptr2)	984	res = etp_tmpbuf_get (tmpbuf, PATH_MAX * 3);
1303	{	985	#ifdef _WIN32
1304	X_LOCK (wrklock);	986	if (_access (rel, 4) != 0)
1305	req->flags |= EIO_FLAG_PTR2_FREE;
1306	X_UNLOCK (wrklock);
1307	req->ptr2 = malloc (PATH_MAX * 3);
1308
1309	errno = ENOMEM;
1310	if (!req->ptr2)
1311	return;	987	return -1;
1312	}
1313		988
1314	res = req->ptr2;	989	symlinks = GetFullPathName (rel, PATH_MAX * 3, res, 0);
		990
		991	errno = ENAMETOOLONG;
		992	if (symlinks >= PATH_MAX * 3)
		993	return -1;
		994
		995	errno = EIO;
		996	if (symlinks <= 0)
		997	return -1;
		998
		999	return symlinks;
		1000
		1001	#else
1315	tmp1 = res + PATH_MAX;	1002	tmp1 = res + PATH_MAX;
1316	tmp2 = tmp1 + PATH_MAX;	1003	tmp2 = tmp1 + PATH_MAX;
1317		1004
1318	#if 0 /* disabled, the musl way to do things is just too racy */	1005	#if 0 /* disabled, the musl way to do things is just too racy */
1319	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1006	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1323		1010
1324	if (fd >= 0)	1011	if (fd >= 0)
1325	{	1012	{
1326	sprintf (tmp1, "/proc/self/fd/%d", fd);	1013	sprintf (tmp1, "/proc/self/fd/%d", fd);
1327	req->result = readlink (tmp1, res, PATH_MAX);	1014	req->result = readlink (tmp1, res, PATH_MAX);
		1015	/* here we should probably stat the open file and the disk file, to make sure they still match */
1328	close (fd);	1016	close (fd);
1329
1330	/* here we should probably stat the open file and the disk file, to make sure they still match */
1331		1017
1332	if (req->result > 0)	1018	if (req->result > 0)
1333	goto done;	1019	goto done;
1334	}	1020	}
1335	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)	1021	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1336	return;	1022	return -1;
1337	}	1023	}
1338	#endif	1024	#endif
1339	#endif	1025	#endif
1340		1026
1341	if (*rel != '/')	1027	if (*rel != '/')
1342	{	1028	{
		1029	int len;
		1030
		1031	errno = ENOENT;
		1032	if (wd == EIO_INVALID_WD)
		1033	return -1;
		1034
		1035	if (wd == EIO_CWD)
		1036	{
1343	if (!getcwd (res, PATH_MAX))	1037	if (!getcwd (res, PATH_MAX))
1344	return;	1038	return -1;
		1039
		1040	len = strlen (res);
		1041	}
		1042	else
		1043	memcpy (res, wd->str, len = wd->len);
1345		1044
1346	if (res [1]) /* only use if not / */	1045	if (res [1]) /* only use if not / */
1347	res += strlen (res);	1046	res += len;
1348	}	1047	}
1349		1048
1350	while (*rel)	1049	while (*rel)
1351	{	1050	{
1352	eio_ssize_t len, linklen;	1051	eio_ssize_t len, linklen;
1353	char *beg = rel;	1052	const char *beg = rel;
1354		1053
1355	while (*rel && *rel != '/')	1054	while (*rel && *rel != '/')
1356	++rel;	1055	++rel;
1357		1056
1358	len = rel - beg;	1057	len = rel - beg;
…		…
1370		1069
1371	if (beg [1] == '.' && len == 2)	1070	if (beg [1] == '.' && len == 2)
1372	{	1071	{
1373	/* .. - back up one component, if possible */	1072	/* .. - back up one component, if possible */
1374		1073
1375	while (res != req->ptr2)	1074	while (res != tmpbuf->ptr)
1376	if (*--res == '/')	1075	if (*--res == '/')
1377	break;	1076	break;
1378		1077
1379	continue;	1078	continue;
1380	}	1079	}
1381	}	1080	}
1382		1081
1383	errno = ENAMETOOLONG;	1082	errno = ENAMETOOLONG;
1384	if (res + 1 + len + 1 >= tmp1)	1083	if (res + 1 + len + 1 >= tmp1)
1385	return;	1084	return -1;
1386		1085
1387	/* copy one component */	1086	/* copy one component */
1388	*res = '/';	1087	*res = '/';
1389	memcpy (res + 1, beg, len);	1088	memcpy (res + 1, beg, len);
1390		1089
1391	/* zero-terminate, for readlink */	1090	/* zero-terminate, for readlink */
1392	res [len + 1] = 0;	1091	res [len + 1] = 0;
1393		1092
1394	/* now check if it's a symlink */	1093	/* now check if it's a symlink */
1395	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1094	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1396		1095
1397	if (linklen < 0)	1096	if (linklen < 0)
1398	{	1097	{
1399	if (errno != EINVAL)	1098	if (errno != EINVAL)
1400	return;	1099	return -1;
1401		1100
1402	/* it's a normal directory. hopefully */	1101	/* it's a normal directory. hopefully */
1403	res += len + 1;	1102	res += len + 1;
1404	}	1103	}
1405	else	1104	else
…		…
1407	/* yay, it was a symlink - build new path in tmp2 */	1106	/* yay, it was a symlink - build new path in tmp2 */
1408	int rellen = strlen (rel);	1107	int rellen = strlen (rel);
1409		1108
1410	errno = ENAMETOOLONG;	1109	errno = ENAMETOOLONG;
1411	if (linklen + 1 + rellen >= PATH_MAX)	1110	if (linklen + 1 + rellen >= PATH_MAX)
1412	return;	1111	return -1;
1413		1112
1414	errno = ELOOP;	1113	errno = ELOOP;
1415	if (!--symlinks)	1114	if (!--symlinks)
1416	return;	1115	return -1;
1417		1116
1418	if (*tmp1 == '/')	1117	if (*tmp1 == '/')
1419	res = req->ptr2; /* symlink resolves to an absolute path */	1118	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1420		1119
1421	/* we need to be careful, as rel might point into tmp2 already */	1120	/* we need to be careful, as rel might point into tmp2 already */
1422	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1121	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1423	tmp2 [linklen] = '/';	1122	tmp2 [linklen] = '/';
1424	memcpy (tmp2, tmp1, linklen);	1123	memcpy (tmp2, tmp1, linklen);
…		…
1426	rel = tmp2;	1125	rel = tmp2;
1427	}	1126	}
1428	}	1127	}
1429		1128
1430	/* special case for the lone root path */	1129	/* special case for the lone root path */
1431	if (res == req->ptr2)	1130	if (res == tmpbuf->ptr)
1432	*res++ = '/';	1131	*res++ = '/';
1433		1132
1434	req->result = res - (char *)req->ptr2;	1133	return res - (char *)tmpbuf->ptr;
1435		1134	#endif
1436	done:
1437	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1438	}	1135	}
1439		1136
1440	static signed char	1137	static signed char
1441	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1138	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1442	{	1139	{
…		…
1630	#ifdef _WIN32	1327	#ifdef _WIN32
1631	{	1328	{
1632	int len = strlen ((const char *)req->ptr1);	1329	int len = strlen ((const char *)req->ptr1);
1633	char *path = malloc (MAX_PATH);	1330	char *path = malloc (MAX_PATH);
1634	const char *fmt;	1331	const char *fmt;
		1332	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1635		1333
1636	if (!len)	1334	if (!len)
1637	fmt = "./*";	1335	fmt = "./*";
1638	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1336	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1639	fmt = "%s*";	1337	fmt = "%s*";
1640	else	1338	else
1641	fmt = "%s/*";	1339	fmt = "%s/*";
1642		1340
1643	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1341	_snprintf (path, MAX_PATH, fmt, reqpath);
1644	dirp = FindFirstFile (path, &entp);	1342	dirp = FindFirstFile (path, &entp);
1645	free (path);	1343	free (path);
1646		1344
1647	if (dirp == INVALID_HANDLE_VALUE)	1345	if (dirp == INVALID_HANDLE_VALUE)
1648	{	1346	{
1649	dirp = 0;	1347	/* should steal _dosmaperr */
1650
1651	switch (GetLastError ())	1348	switch (GetLastError ())
1652	{	1349	{
1653	case ERROR_FILE_NOT_FOUND:	1350	case ERROR_FILE_NOT_FOUND:
1654	req->result = 0;	1351	req->result = 0;
1655	break;	1352	break;
1656		1353
1657	case ERROR_INVALID_NAME:	1354	case ERROR_INVALID_NAME:
1658	case ERROR_PATH_NOT_FOUND:	1355	case ERROR_PATH_NOT_FOUND:
1659	case ERROR_NO_MORE_FILES:	1356	case ERROR_NO_MORE_FILES:
1660	errno = ENOENT;	1357	errno = ENOENT;
1661	break;	1358	break;
1662		1359
1663	case ERROR_NOT_ENOUGH_MEMORY:	1360	case ERROR_NOT_ENOUGH_MEMORY:
1664	errno = ENOMEM;	1361	errno = ENOMEM;
1665	break;	1362	break;
1666		1363
1667	default:	1364	default:
1668	errno = EINVAL;	1365	errno = EINVAL;
1669	break;	1366	break;
1670	}	1367	}
		1368
		1369	return;
1671	}	1370	}
1672	}	1371	}
1673	#else	1372	#else
		1373	#if HAVE_AT
		1374	if (req->wd)
		1375	{
		1376	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1377
		1378	if (fd < 0)
		1379	return;
		1380
		1381	dirp = fdopendir (fd);
		1382
		1383	if (!dirp)
		1384	close (fd);
		1385	}
		1386	else
1674	dirp = opendir (req->ptr1);	1387	dirp = opendir (req->ptr1);
		1388	#else
		1389	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1390	#endif
		1391
		1392	if (!dirp)
		1393	return;
1675	#endif	1394	#endif
1676		1395
1677	if (req->flags & EIO_FLAG_PTR1_FREE)	1396	if (req->flags & EIO_FLAG_PTR1_FREE)
1678	free (req->ptr1);	1397	free (req->ptr1);
1679		1398
1680	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1399	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1681	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1400	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1682	req->ptr2 = names = malloc (namesalloc);	1401	req->ptr2 = names = malloc (namesalloc);
1683		1402
1684	if (dirp && names && (!flags || dents))	1403	if (!names || (flags && !dents))
		1404	return;
		1405
1685	for (;;)	1406	for (;;)
1686	{	1407	{
1687	int done;	1408	int done;
1688		1409
1689	#ifdef _WIN32	1410	#ifdef _WIN32
1690	done = !dirp;	1411	done = !dirp;
1691	#else	1412	#else
1692	errno = 0;	1413	errno = 0;
1693	entp = readdir (dirp);	1414	entp = readdir (dirp);
1694	done = !entp;	1415	done = !entp;
1695	#endif	1416	#endif
1696		1417
1697	if (done)	1418	if (done)
1698	{	1419	{
1699	#ifndef _WIN32	1420	#ifndef _WIN32
1700	int old_errno = errno;	1421	int old_errno = errno;
1701	closedir (dirp);	1422	closedir (dirp);
1702	errno = old_errno;	1423	errno = old_errno;
1703		1424
1704	if (errno)	1425	if (errno)
1705	break;	1426	break;
1706	#endif	1427	#endif
1707		1428
1708	/* sort etc. */	1429	/* sort etc. */
1709	req->int1 = flags;	1430	req->int1 = flags;
1710	req->result = dentoffs;	1431	req->result = dentoffs;
1711		1432
1712	if (flags & EIO_READDIR_STAT_ORDER)	1433	if (flags & EIO_READDIR_STAT_ORDER)
1713	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);	1434	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1714	else if (flags & EIO_READDIR_DIRS_FIRST)	1435	else if (flags & EIO_READDIR_DIRS_FIRST)
1715	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1436	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1716	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1437	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1717	else	1438	else
		1439	{
		1440	/* in this case, all is known, and we just put dirs first and sort them */
		1441	eio_dirent *oth = dents + dentoffs;
		1442	eio_dirent *dir = dents;
		1443
		1444	/* now partition dirs to the front, and non-dirs to the back */
		1445	/* by walking from both sides and swapping if necessary */
		1446	while (oth > dir)
		1447	{
		1448	if (dir->type == EIO_DT_DIR)
		1449	++dir;
		1450	else if ((--oth)->type == EIO_DT_DIR)
		1451	{
		1452	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1453
		1454	++dir;
		1455	}
		1456	}
		1457
		1458	/* now sort the dirs only (dirs all have the same score) */
		1459	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1460	}
		1461
		1462	break;
		1463	}
		1464
		1465	/* now add the entry to our list(s) */
		1466	name = D_NAME (entp);
		1467
		1468	/* skip . and .. entries */
		1469	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1470	{
		1471	int len = D_NAMLEN (entp) + 1;
		1472
		1473	while (ecb_expect_false (namesoffs + len > namesalloc))
		1474	{
		1475	namesalloc *= 2;
		1476	req->ptr2 = names = realloc (names, namesalloc);
		1477
		1478	if (!names)
		1479	break;
		1480	}
		1481
		1482	memcpy (names + namesoffs, name, len);
		1483
		1484	if (dents)
		1485	{
		1486	struct eio_dirent *ent;
		1487
		1488	if (ecb_expect_false (dentoffs == dentalloc))
1718	{	1489	{
1719	/* in this case, all is known, and we just put dirs first and sort them */	1490	dentalloc *= 2;
		1491	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1492
		1493	if (!dents)
		1494	break;
		1495	}
		1496
1720	eio_dirent *oth = dents + dentoffs;	1497	ent = dents + dentoffs;
1721	eio_dirent *dir = dents;
1722		1498
1723	/* now partition dirs to the front, and non-dirs to the back */	1499	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1724	/* by walking from both sides and swapping if necessary */	1500	ent->namelen = len - 1;
1725	while (oth > dir)	1501	ent->inode = D_INO (entp);
		1502
		1503	inode_bits |= ent->inode;
		1504
		1505	switch (D_TYPE (entp))
		1506	{
		1507	default:
		1508	ent->type = EIO_DT_UNKNOWN;
		1509	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1510	break;
		1511
		1512	#ifdef DT_FIFO
		1513	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1514	#endif
		1515	#ifdef DT_CHR
		1516	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1517	#endif
		1518	#ifdef DT_MPC
		1519	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1520	#endif
		1521	#ifdef DT_DIR
		1522	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1523	#endif
		1524	#ifdef DT_NAM
		1525	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1526	#endif
		1527	#ifdef DT_BLK
		1528	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1529	#endif
		1530	#ifdef DT_MPB
		1531	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1532	#endif
		1533	#ifdef DT_REG
		1534	case DT_REG: ent->type = EIO_DT_REG; break;
		1535	#endif
		1536	#ifdef DT_NWK
		1537	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1538	#endif
		1539	#ifdef DT_CMP
		1540	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1541	#endif
		1542	#ifdef DT_LNK
		1543	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1544	#endif
		1545	#ifdef DT_SOCK
		1546	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1547	#endif
		1548	#ifdef DT_DOOR
		1549	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1550	#endif
		1551	#ifdef DT_WHT
		1552	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1553	#endif
		1554	}
		1555
		1556	ent->score = 7;
		1557
		1558	if (flags & EIO_READDIR_DIRS_FIRST)
		1559	{
		1560	if (ent->type == EIO_DT_UNKNOWN)
1726	{	1561	{
1727	if (dir->type == EIO_DT_DIR)	1562	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1728	++dir;	1563	ent->score = 1;
1729	else if ((--oth)->type == EIO_DT_DIR)	1564	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1730	{	1565	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1731	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1732
1733	++dir;
1734	}
1735	}	1566	}
1736		1567	else if (ent->type == EIO_DT_DIR)
1737	/* now sort the dirs only (dirs all have the same score) */	1568	ent->score = 0;
1738	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1739	}	1569	}
1740
1741	break;
1742	}
1743
1744	/* now add the entry to our list(s) */
1745	name = D_NAME (entp);
1746
1747	/* skip . and .. entries */
1748	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1749	{
1750	int len = D_NAMLEN (entp) + 1;
1751
1752	while (ecb_expect_false (namesoffs + len > namesalloc))
1753	{
1754	namesalloc *= 2;
1755	req->ptr2 = names = realloc (names, namesalloc);
1756
1757	if (!names)
1758	break;
1759	}	1570	}
1760		1571
1761	memcpy (names + namesoffs, name, len);
1762
1763	if (dents)
1764	{
1765	struct eio_dirent *ent;
1766
1767	if (ecb_expect_false (dentoffs == dentalloc))
1768	{
1769	dentalloc *= 2;
1770	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1771
1772	if (!dents)
1773	break;
1774	}
1775
1776	ent = dents + dentoffs;
1777
1778	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1779	ent->namelen = len - 1;
1780	ent->inode = D_INO (entp);
1781
1782	inode_bits |= ent->inode;
1783
1784	switch (D_TYPE (entp))
1785	{
1786	default:
1787	ent->type = EIO_DT_UNKNOWN;
1788	flags |= EIO_READDIR_FOUND_UNKNOWN;
1789	break;
1790
1791	#ifdef DT_FIFO
1792	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1793	#endif
1794	#ifdef DT_CHR
1795	case DT_CHR: ent->type = EIO_DT_CHR; break;
1796	#endif
1797	#ifdef DT_MPC
1798	case DT_MPC: ent->type = EIO_DT_MPC; break;
1799	#endif
1800	#ifdef DT_DIR
1801	case DT_DIR: ent->type = EIO_DT_DIR; break;
1802	#endif
1803	#ifdef DT_NAM
1804	case DT_NAM: ent->type = EIO_DT_NAM; break;
1805	#endif
1806	#ifdef DT_BLK
1807	case DT_BLK: ent->type = EIO_DT_BLK; break;
1808	#endif
1809	#ifdef DT_MPB
1810	case DT_MPB: ent->type = EIO_DT_MPB; break;
1811	#endif
1812	#ifdef DT_REG
1813	case DT_REG: ent->type = EIO_DT_REG; break;
1814	#endif
1815	#ifdef DT_NWK
1816	case DT_NWK: ent->type = EIO_DT_NWK; break;
1817	#endif
1818	#ifdef DT_CMP
1819	case DT_CMP: ent->type = EIO_DT_CMP; break;
1820	#endif
1821	#ifdef DT_LNK
1822	case DT_LNK: ent->type = EIO_DT_LNK; break;
1823	#endif
1824	#ifdef DT_SOCK
1825	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1826	#endif
1827	#ifdef DT_DOOR
1828	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1829	#endif
1830	#ifdef DT_WHT
1831	case DT_WHT: ent->type = EIO_DT_WHT; break;
1832	#endif
1833	}
1834
1835	ent->score = 7;
1836
1837	if (flags & EIO_READDIR_DIRS_FIRST)
1838	{
1839	if (ent->type == EIO_DT_UNKNOWN)
1840	{
1841	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1842	ent->score = 1;
1843	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1844	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1845	}
1846	else if (ent->type == EIO_DT_DIR)
1847	ent->score = 0;
1848	}
1849	}
1850
1851	namesoffs += len;	1572	namesoffs += len;
1852	++dentoffs;	1573	++dentoffs;
1853	}	1574	}
1854		1575
1855	if (EIO_CANCELLED (req))	1576	if (EIO_CANCELLED (req))
1856	{	1577	{
1857	errno = ECANCELED;	1578	errno = ECANCELED;
1858	break;	1579	break;
1859	}	1580	}
1860		1581
1861	#ifdef _WIN32	1582	#ifdef _WIN32
1862	if (!FindNextFile (dirp, &entp))	1583	if (!FindNextFile (dirp, &entp))
1863	{	1584	{
1864	FindClose (dirp);	1585	FindClose (dirp);
1865	dirp = 0;	1586	dirp = 0;
1866	}	1587	}
1867	#endif	1588	#endif
1868	}	1589	}
1869	}	1590	}
		1591
		1592	/*****************************************************************************/
		1593	/* working directory stuff */
		1594	/* various deficiencies in the posix 2008 api force us to */
		1595	/* keep the absolute path in string form at all times */
		1596	/* fuck yeah. */
		1597
		1598	#if !HAVE_AT
		1599
		1600	/* a bit like realpath, but usually faster because it doesn'T have to return */
		1601	/* an absolute or canonical path */
		1602	static const char *
		1603	wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1604	{
		1605	if (!wd || *path == '/')
		1606	return path;
		1607
		1608	if (path [0] == '.' && !path [1])
		1609	return wd->str;
		1610
		1611	{
		1612	int l1 = wd->len;
		1613	int l2 = strlen (path);
		1614
		1615	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
		1616
		1617	memcpy (res, wd->str, l1);
		1618	res [l1] = '/';
		1619	memcpy (res + l1 + 1, path, l2 + 1);
		1620
		1621	return res;
		1622	}
		1623	}
		1624
		1625	#endif
		1626
		1627	static eio_wd
		1628	eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1629	{
		1630	int fd;
		1631	eio_wd res;
		1632	int len = eio__realpath (tmpbuf, wd, path);
		1633
		1634	if (len < 0)
		1635	return EIO_INVALID_WD;
		1636
		1637	#if HAVE_AT
		1638	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1639
		1640	if (fd < 0)
		1641	return EIO_INVALID_WD;
		1642	#endif
		1643
		1644	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		1645
		1646	#if HAVE_AT
		1647	res->fd = fd;
		1648	#endif
		1649
		1650	res->len = len;
		1651	memcpy (res->str, tmpbuf->ptr, len);
		1652	res->str [len] = 0;
		1653
		1654	return res;
		1655	}
		1656
		1657	eio_wd
		1658	eio_wd_open_sync (eio_wd wd, const char *path)
		1659	{
		1660	struct etp_tmpbuf tmpbuf = { };
		1661	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		1662	free (tmpbuf.ptr);
		1663
		1664	return wd;
		1665	}
		1666
		1667	void
		1668	eio_wd_close_sync (eio_wd wd)
		1669	{
		1670	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		1671	{
		1672	#if HAVE_AT
		1673	close (wd->fd);
		1674	#endif
		1675	free (wd);
		1676	}
		1677	}
		1678
		1679	#if HAVE_AT
		1680
		1681	/* they forgot these */
		1682
		1683	static int
		1684	eio__truncateat (int dirfd, const char *path, off_t length)
		1685	{
		1686	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		1687	int res;
		1688
		1689	if (fd < 0)
		1690	return fd;
		1691
		1692	res = ftruncate (fd, length);
		1693	close (fd);
		1694	return res;
		1695	}
		1696
		1697	static int
		1698	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		1699	{
		1700	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		1701	int res;
		1702
		1703	if (fd < 0)
		1704	return fd;
		1705
		1706	res = fstatvfs (fd, buf);
		1707	close (fd);
		1708	return res;
		1709
		1710	}
		1711
		1712	#endif
1870		1713
1871	/*****************************************************************************/	1714	/*****************************************************************************/
1872		1715
1873	#define ALLOC(len) \	1716	#define ALLOC(len) \
1874	if (!req->ptr2) \	1717	if (!req->ptr2) \
1875	{ \	1718	{ \
1876	X_LOCK (wrklock); \	1719	X_LOCK (EIO_POOL->wrklock); \
1877	req->flags |= EIO_FLAG_PTR2_FREE; \	1720	req->flags |= EIO_FLAG_PTR2_FREE; \
1878	X_UNLOCK (wrklock); \	1721	X_UNLOCK (EIO_POOL->wrklock); \
1879	req->ptr2 = malloc (len); \	1722	req->ptr2 = malloc (len); \
1880	if (!req->ptr2) \	1723	if (!req->ptr2) \
1881	{ \	1724	{ \
1882	errno = ENOMEM; \	1725	errno = ENOMEM; \
1883	req->result = -1; \	1726	req->result = -1; \
1884	break; \	1727	break; \
1885	} \	1728	} \
1886	}	1729	}
1887		1730
1888	X_THREAD_PROC (etp_proc)
1889	{
1890	ETP_REQ *req;
1891	struct timespec ts;
1892	etp_worker *self = (etp_worker *)thr_arg;
1893
1894	/* try to distribute timeouts somewhat evenly */
1895	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1896
1897	for (;;)
1898	{
1899	ts.tv_sec = 0;
1900
1901	X_LOCK (reqlock);
1902
1903	for (;;)
1904	{
1905	self->req = req = reqq_shift (&req_queue);
1906
1907	if (req)
1908	break;
1909
1910	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1911	{
1912	X_UNLOCK (reqlock);
1913	X_LOCK (wrklock);
1914	--started;
1915	X_UNLOCK (wrklock);
1916	goto quit;
1917	}
1918
1919	++idle;
1920
1921	if (idle <= max_idle)
1922	/* we are allowed to idle, so do so without any timeout */
1923	X_COND_WAIT (reqwait, reqlock);
1924	else
1925	{
1926	/* initialise timeout once */
1927	if (!ts.tv_sec)
1928	ts.tv_sec = time (0) + idle_timeout;
1929
1930	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1931	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1932	}
1933
1934	--idle;
1935	}
1936
1937	--nready;
1938
1939	X_UNLOCK (reqlock);
1940
1941	if (req->type < 0)
1942	goto quit;
1943
1944	ETP_EXECUTE (self, req);
1945
1946	X_LOCK (reslock);
1947
1948	++npending;
1949
1950	if (!reqq_push (&res_queue, req) && want_poll_cb)
1951	want_poll_cb ();
1952
1953	self->req = 0;
1954	etp_worker_clear (self);
1955
1956	X_UNLOCK (reslock);
1957	}
1958
1959	quit:
1960	X_LOCK (wrklock);
1961	etp_worker_free (self);
1962	X_UNLOCK (wrklock);
1963
1964	return 0;
1965	}
1966
1967	/*****************************************************************************/	1731	/*****************************************************************************/
1968		1732
1969	int ecb_cold	1733	int ecb_cold
1970	eio_init (void (*want_poll)(void), void (*done_poll)(void))	1734	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1971	{	1735	{
1972	#if !HAVE_PREADWRITE	1736	eio_want_poll_cb = want_poll;
1973	X_MUTEX_CREATE (preadwritelock);	1737	eio_done_poll_cb = done_poll;
1974	#endif
1975		1738
1976	return etp_init (want_poll, done_poll);	1739	return etp_init (EIO_POOL, 0, 0, 0);
1977	}	1740	}
1978		1741
1979	ecb_inline void	1742	ecb_inline void
1980	eio_api_destroy (eio_req *req)	1743	eio_api_destroy (eio_req *req)
1981	{	1744	{
1982	free (req);	1745	free (req);
1983	}	1746	}
1984		1747
1985	#define REQ(rtype) \	1748	#define REQ(rtype) \
1986	eio_req *req; \	1749	eio_req *req; \
1987	\	1750	\
1988	req = (eio_req *)calloc (1, sizeof *req); \	1751	req = (eio_req *)calloc (1, sizeof *req); \
1989	if (!req) \	1752	if (!req) \
1990	return 0; \	1753	return 0; \
…		…
2004	{ \	1767	{ \
2005	eio_api_destroy (req); \	1768	eio_api_destroy (req); \
2006	return 0; \	1769	return 0; \
2007	}	1770	}
2008		1771
		1772	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		1773
2009	static void	1774	static void
2010	eio_execute (etp_worker *self, eio_req *req)	1775	eio_execute (etp_worker *self, eio_req *req)
2011	{	1776	{
		1777	#if HAVE_AT
		1778	int dirfd;
		1779	#else
		1780	const char *path;
		1781	#endif
		1782
2012	if (ecb_expect_false (EIO_CANCELLED (req)))	1783	if (ecb_expect_false (EIO_CANCELLED (req)))
2013	{	1784	{
2014	req->result = -1;	1785	req->result = -1;
2015	req->errorno = ECANCELED;	1786	req->errorno = ECANCELED;
2016	return;	1787	return;
2017	}	1788	}
2018		1789
		1790	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		1791	{
		1792	req->result = -1;
		1793	req->errorno = ENOENT;
		1794	return;
		1795	}
		1796
		1797	if (req->type >= EIO_OPEN)
		1798	{
		1799	#if HAVE_AT
		1800	dirfd = WD2FD (req->wd);
		1801	#else
		1802	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		1803	#endif
		1804	}
		1805
2019	switch (req->type)	1806	switch (req->type)
2020	{	1807	{
		1808	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		1809	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		1810	break;
		1811	case EIO_WD_CLOSE: req->result = 0;
		1812	eio_wd_close_sync (req->wd); break;
		1813
		1814	case EIO_SEEK: eio__lseek (req); break;
2021	case EIO_READ: ALLOC (req->size);	1815	case EIO_READ: ALLOC (req->size);
2022	req->result = req->offs >= 0	1816	req->result = req->offs >= 0
2023	? pread (req->int1, req->ptr2, req->size, req->offs)	1817	? pread (req->int1, req->ptr2, req->size, req->offs)
2024	: read (req->int1, req->ptr2, req->size); break;	1818	: read (req->int1, req->ptr2, req->size); break;
2025	case EIO_WRITE: req->result = req->offs >= 0	1819	case EIO_WRITE: req->result = req->offs >= 0
2026	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1820	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2027	: write (req->int1, req->ptr2, req->size); break;	1821	: write (req->int1, req->ptr2, req->size); break;
2028		1822
		1823	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1824	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1825
2029	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1826	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2030	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	1827	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
		1828
		1829	#if HAVE_AT
2031		1830
2032	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1831	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2033	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1832	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2034	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1833	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1834	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		1835	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		1836	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		1837	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		1838	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1839
		1840	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		1841	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1842	req->result = req->wd && SINGLEDOT (req->ptr1)
		1843	? rmdir (req->wd->str)
		1844	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		1845	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		1846	case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
		1847	req->result = req->wd && SINGLEDOT (req->ptr1)
		1848	? rename (req->wd->str, req->ptr2)
		1849	: renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		1850	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		1851	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		1852	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		1853	case EIO_READLINK: ALLOC (PATH_MAX);
		1854	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
		1855	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1856	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1857	case EIO_UTIME:
		1858	case EIO_FUTIME:
		1859	{
		1860	struct timespec ts[2];
		1861	struct timespec *times;
		1862
		1863	if (req->nv1 != -1. || req->nv2 != -1.)
		1864	{
		1865	ts[0].tv_sec = req->nv1;
		1866	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		1867	ts[1].tv_sec = req->nv2;
		1868	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		1869
		1870	times = ts;
		1871	}
		1872	else
		1873	times = 0;
		1874
		1875	req->result = req->type == EIO_FUTIME
		1876	? futimens (req->int1, times)
		1877	: utimensat (dirfd, req->ptr1, times, 0);
		1878	}
		1879	break;
		1880
		1881	#else
		1882
		1883	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1884	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1885	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2035	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1886	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1887	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		1888	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		1889	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		1890	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		1891
		1892	case EIO_UNLINK: req->result = unlink (path ); break;
		1893	case EIO_RMDIR: req->result = rmdir (path ); break;
		1894	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		1895	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		1896	case EIO_LINK: req->result = link (path , req->ptr2); break;
		1897	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		1898	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		1899	case EIO_READLINK: ALLOC (PATH_MAX);
		1900	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		1901	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1902	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1903
		1904	case EIO_UTIME:
		1905	case EIO_FUTIME:
		1906	{
		1907	struct timeval tv[2];
		1908	struct timeval *times;
		1909
		1910	if (req->nv1 != -1. || req->nv2 != -1.)
		1911	{
		1912	tv[0].tv_sec = req->nv1;
		1913	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		1914	tv[1].tv_sec = req->nv2;
		1915	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		1916
		1917	times = tv;
		1918	}
		1919	else
		1920	times = 0;
		1921
		1922	req->result = req->type == EIO_FUTIME
		1923	? futimes (req->int1, times)
		1924	: utimes (req->ptr1, times);
		1925	}
		1926	break;
		1927
		1928	#endif
		1929
		1930	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		1931	{
		1932	ALLOC (req->result);
		1933	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		1934	}
		1935	break;
		1936
2036	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1937	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2037	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	1938	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2038		1939
2039	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2040	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2041	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1940	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2042	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1941	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2043		1942
2044	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2045	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	1943	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2046	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2047	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	1944	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2048	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2049	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	1945	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2050		1946
2051	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2052	case EIO_CLOSE: req->result = close (req->int1); break;	1947	case EIO_CLOSE: req->result = close (req->int1); break;
2053	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	1948	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2054	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2055	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2056	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2057	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2058	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2059	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2060	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2061
2062	case EIO_REALPATH: eio__realpath (req, self); break;
2063
2064	case EIO_READLINK: ALLOC (PATH_MAX);
2065	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2066
2067	case EIO_SYNC: req->result = 0; sync (); break;	1949	case EIO_SYNC: req->result = 0; sync (); break;
2068	case EIO_FSYNC: req->result = fsync (req->int1); break;	1950	case EIO_FSYNC: req->result = fsync (req->int1); break;
2069	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	1951	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		1952	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		1953	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2070	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	1954	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2071	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	1955	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2072	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	1956	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2073	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	1957	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2074	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2075	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	1958	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2076		1959
2077	case EIO_READDIR: eio__scandir (req, self); break;	1960	case EIO_READDIR: eio__scandir (req, self); break;
2078		1961
2079	case EIO_BUSY:	1962	case EIO_BUSY:
…		…
2089	req->result = select (0, 0, 0, 0, &tv);	1972	req->result = select (0, 0, 0, 0, &tv);
2090	}	1973	}
2091	#endif	1974	#endif
2092	break;	1975	break;
2093		1976
2094	case EIO_UTIME:	1977	#if 0
2095	case EIO_FUTIME:
2096	{
2097	struct timeval tv[2];
2098	struct timeval *times;
2099
2100	if (req->nv1 != -1. || req->nv2 != -1.)
2101	{
2102	tv[0].tv_sec = req->nv1;
2103	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2104	tv[1].tv_sec = req->nv2;
2105	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2106
2107	times = tv;
2108	}
2109	else
2110	times = 0;
2111
2112	req->result = req->type == EIO_FUTIME
2113	? futimes (req->int1, times)
2114	: utimes (req->ptr1, times);
2115	}
2116	break;
2117
2118	case EIO_GROUP:	1978	case EIO_GROUP:
2119	abort (); /* handled in eio_request */	1979	abort (); /* handled in eio_request */
		1980	#endif
2120		1981
2121	case EIO_NOP:	1982	case EIO_NOP:
2122	req->result = 0;	1983	req->result = 0;
2123	break;	1984	break;
2124		1985
2125	case EIO_CUSTOM:	1986	case EIO_CUSTOM:
2126	req->feed (req);	1987	req->feed (req);
2127	break;	1988	break;
2128		1989
2129	default:	1990	default:
2130	errno = ENOSYS;
2131	req->result = -1;	1991	req->result = EIO_ENOSYS ();
2132	break;	1992	break;
2133	}	1993	}
2134		1994
2135	req->errorno = errno;	1995	req->errorno = errno;
2136	}	1996	}
2137		1997
2138	#ifndef EIO_NO_WRAPPERS	1998	#ifndef EIO_NO_WRAPPERS
2139		1999
		2000	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		2001	{
		2002	REQ (EIO_WD_OPEN); PATH; SEND;
		2003	}
		2004
		2005	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2006	{
		2007	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2008	}
		2009
2140	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2010	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2141	{	2011	{
2142	REQ (EIO_NOP); SEND;	2012	REQ (EIO_NOP); SEND;
2143	}	2013	}
2144		2014
…		…
2160	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2030	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2161	{	2031	{
2162	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2032	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2163	}	2033	}
2164		2034
		2035	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2036	{
		2037	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2038	}
		2039
		2040	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2041	{
		2042	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2043	}
		2044
		2045	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2046	{
		2047	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2048	}
		2049
2165	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2050	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2166	{	2051	{
2167	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2052	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2168	}	2053	}
2169		2054
…		…
2175	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2060	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2176	{	2061	{
2177	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2062	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2178	}	2063	}
2179		2064
2180	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2181	{
2182	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2183	}
2184
2185	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)	2065	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2186	{	2066	{
2187	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;	2067	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2188	}	2068	}
2189		2069
2190	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2191	{
2192	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2193	}
2194
2195	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2070	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2196	{	2071	{
2197	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2072	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2198	}	2073	}
2199		2074
2200	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2075	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2201	{	2076	{
2202	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2077	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2203	}	2078	}
2204		2079
		2080	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2081	{
		2082	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2083	}
		2084
2205	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2085	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2206	{	2086	{
2207	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2087	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2208	}	2088	}
2209		2089
2210	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2090	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2211	{	2091	{
2212	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2092	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2093	}
		2094
		2095	eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data)
		2096	{
		2097	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2098	}
		2099
		2100	eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data)
		2101	{
		2102	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2213	}	2103	}
2214		2104
2215	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2105	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
2216	{	2106	{
2217	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2107	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2405	void	2295	void
2406	eio_grp_add (eio_req *grp, eio_req *req)	2296	eio_grp_add (eio_req *grp, eio_req *req)
2407	{	2297	{
2408	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2298	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2409		2299
2410	grp->flags |= EIO_FLAG_GROUPADD;	2300	grp->flags |= ETP_FLAG_GROUPADD;
2411		2301
2412	++grp->size;	2302	++grp->size;
2413	req->grp = grp;	2303	req->grp = grp;
2414		2304
2415	req->grp_prev = 0;	2305	req->grp_prev = 0;
…		…
2425	/* misc garbage */	2315	/* misc garbage */
2426		2316
2427	eio_ssize_t	2317	eio_ssize_t
2428	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2318	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2429	{	2319	{
2430	etp_worker wrk;
2431	eio_ssize_t ret;
2432
2433	wrk.dbuf = 0;
2434
2435	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2320	return eio__sendfile (ofd, ifd, offset, count);
2436
2437	if (wrk.dbuf)
2438	free (wrk.dbuf);
2439
2440	return ret;
2441	}	2321	}
2442		2322

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