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Comparing libeio/eio.c (file contents):
Revision 1.103 by root, Thu Sep 15 13:20:54 2011 UTC vs.
Revision 1.144 by root, Tue Dec 27 09:58:44 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,
…		…
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 X_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>
…		…
120	#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))
121		116
122	#define chmod(path,mode) _chmod (path, mode)	117	#define chmod(path,mode) _chmod (path, mode)
123	#define dup(fd) _dup (fd)	118	#define dup(fd) _dup (fd)
124	#define dup2(fd1,fd2) _dup2 (fd1, fd2)	119	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		120	#define pipe(fds) _pipe (fds, 4096, O_BINARY)
125		121
		122	#define fcntl(fd,cmd,arg) EIO_ENOSYS ()
		123	#define ioctl(fd,cmd,arg) EIO_ENOSYS ()
126	#define fchmod(fd,mode) EIO_ENOSYS ()	124	#define fchmod(fd,mode) EIO_ENOSYS ()
127	#define chown(path,uid,gid) EIO_ENOSYS ()	125	#define chown(path,uid,gid) EIO_ENOSYS ()
128	#define fchown(fd,uid,gid) EIO_ENOSYS ()	126	#define fchown(fd,uid,gid) EIO_ENOSYS ()
129	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	127	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
130	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	128	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
131	#define mknod(path,mode,dev) EIO_ENOSYS ()	129	#define mknod(path,mode,dev) EIO_ENOSYS ()
132	#define sync() EIO_ENOSYS ()	130	#define sync() EIO_ENOSYS ()
133	#define readlink(path,buf,s) EIO_ENOSYS ()	131	#define readlink(path,buf,s) EIO_ENOSYS ()
134	#define statvfs(path,buf) EIO_ENOSYS ()	132	#define statvfs(path,buf) EIO_ENOSYS ()
135	#define fstatvfs(fd,buf) EIO_ENOSYS ()	133	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		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	}
136		169
137	/* rename() uses MoveFile, which fails to overwrite */	170	/* rename() uses MoveFile, which fails to overwrite */
138	#define rename(old,neu) eio__rename (old, neu)	171	#define rename(old,neu) eio__rename (old, neu)
139		172
140	static int	173	static int
…		…
168	/* we could even stat and see if it exists */	201	/* we could even stat and see if it exists */
169	static int	202	static int
170	symlink (const char *old, const char *neu)	203	symlink (const char *old, const char *neu)
171	{	204	{
172	#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)
173	if (CreateSymbolicLink (neu, old, 1))	213	if (CreateSymbolicLink (neu, old, flags))
174	return 0;	214	return 0;
175
176	if (CreateSymbolicLink (neu, old, 0))
177	return 0;
178	#endif	215	#endif
179		216
180	return EIO_ERRNO (ENOENT, -1);	217	return EIO_ERRNO (ENOENT, -1);
181	}	218	}
182		219
183	/* POSIX API only */	220	/* POSIX API only, causing trouble for win32 apps */
184	#define CreateHardLink(neu,old,flags) 0	221	#define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
185	#define CreateSymbolicLink(neu,old,flags) 0	222	#define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
186		223
187	struct statvfs	224	struct statvfs
188	{	225	{
189	int dummy;	226	int dummy;
190	};	227	};
…		…
196		233
197	#else	234	#else
198		235
199	#include <sys/time.h>	236	#include <sys/time.h>
200	#include <sys/select.h>	237	#include <sys/select.h>
201	#include <sys/statvfs.h>
202	#include <unistd.h>	238	#include <unistd.h>
203	#include <signal.h>	239	#include <signal.h>
204	#include <dirent.h>	240	#include <dirent.h>
205		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
		250
206	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	251	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
207	#include <sys/mman.h>	252	#include <sys/mman.h>
208	#endif	253	#endif
209		254
210	#define D_NAME(entp) entp->d_name	255	#define D_NAME(entp) entp->d_name
211		256
212	/* 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 */
213	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	258	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
214	#define _DIRENT_HAVE_D_TYPE /* sigh */	259	#define _DIRENT_HAVE_D_TYPE /* sigh */
215	#define D_INO(de) (de)->d_fileno	260	#define D_INO(de) (de)->d_fileno
216	#define D_NAMLEN(de) (de)->d_namlen	261	#define D_NAMLEN(de) (de)->d_namlen
217	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	262	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
218	#define D_INO(de) (de)->d_ino	263	#define D_INO(de) (de)->d_ino
…		…
237	# include <utime.h>	282	# include <utime.h>
238	#endif	283	#endif
239		284
240	#if HAVE_SYS_SYSCALL_H	285	#if HAVE_SYS_SYSCALL_H
241	# include <sys/syscall.h>	286	# include <sys/syscall.h>
242	#endif
243
244	#if HAVE_SYS_PRCTL_H
245	# include <sys/prctl.h>
246	#endif	287	#endif
247		288
248	#if HAVE_SENDFILE	289	#if HAVE_SENDFILE
249	# if __linux	290	# if __linux
250	# include <sys/sendfile.h>	291	# include <sys/sendfile.h>
…		…
275	# define NAME_MAX 4096	316	# define NAME_MAX 4096
276	#endif	317	#endif
277		318
278	/* used for readlink etc. */	319	/* used for readlink etc. */
279	#ifndef PATH_MAX	320	#ifndef PATH_MAX
280	# define PATH_MAX 4096	321	# define PATH_MAX 0
281	#endif	322	#endif
		323
		324	#ifndef EIO_PATH_MIN
		325	# define EIO_PATH_MIN 8160
		326	#endif
		327
		328	#define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX)
282		329
283	/* buffer size for various temporary buffers */	330	/* buffer size for various temporary buffers */
284	#define EIO_BUFSIZE 65536	331	#define EIO_BUFSIZE 65536
285		332
286	#define dBUF \	333	#define dBUF \
287	char *eio_buf = malloc (EIO_BUFSIZE); \	334	char *eio_buf = malloc (EIO_BUFSIZE); \
288	errno = ENOMEM; \	335	errno = ENOMEM; \
289	if (!eio_buf) \	336	if (!eio_buf) \
290	return -1	337	return -1
291		338
292	#define FUBd \	339	#define FUBd \
293	free (eio_buf)	340	free (eio_buf)
294		341
295	#define EIO_TICKS ((1000000 + 1023) >> 10)	342	/*****************************************************************************/
		343
		344	struct etp_tmpbuf;
		345
		346	#if _POSIX_VERSION >= 200809L
		347	#define HAVE_AT 1
		348	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		349	#ifndef O_SEARCH
		350	#define O_SEARCH O_RDONLY
		351	#endif
		352	#else
		353	#define HAVE_AT 0
		354	static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
		355	#endif
		356
		357	struct eio_pwd
		358	{
		359	#if HAVE_AT
		360	int fd;
		361	#endif
		362	int len;
		363	char str[1]; /* actually, a 0-terminated canonical path */
		364	};
		365
		366	/*****************************************************************************/
296		367
297	#define ETP_PRI_MIN EIO_PRI_MIN	368	#define ETP_PRI_MIN EIO_PRI_MIN
298	#define ETP_PRI_MAX EIO_PRI_MAX	369	#define ETP_PRI_MAX EIO_PRI_MAX
299		370
		371	#define ETP_TYPE_QUIT -1
		372	#define ETP_TYPE_GROUP EIO_GROUP
		373
		374	static void eio_nop_callback (void) { }
		375	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		376	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		377
		378	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		379	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		380
300	struct etp_worker;	381	struct etp_worker;
301
302	#define ETP_REQ eio_req	382	#define ETP_REQ eio_req
303	#define ETP_DESTROY(req) eio_destroy (req)	383	#define ETP_DESTROY(req) eio_destroy (req)
304	static int eio_finish (eio_req *req);	384	static int eio_finish (eio_req *req);
305	#define ETP_FINISH(req) eio_finish (req)	385	#define ETP_FINISH(req) eio_finish (req)
306	static void eio_execute (struct etp_worker *self, eio_req *req);	386	static void eio_execute (struct etp_worker *self, eio_req *req);
307	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	387	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
308		388
309	/*****************************************************************************/	389	#include "etp.c"
310		390
311	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	391	static struct etp_pool eio_pool;
312		392	#define EIO_POOL (&eio_pool)
313	/* calculate time difference in ~1/EIO_TICKS of a second */
314	ecb_inline int
315	tvdiff (struct timeval *tv1, struct timeval *tv2)
316	{
317	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
318	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
319	}
320
321	static unsigned int started, idle, wanted = 4;
322
323	static void (*want_poll_cb) (void);
324	static void (*done_poll_cb) (void);
325
326	static unsigned int max_poll_time; /* reslock */
327	static unsigned int max_poll_reqs; /* reslock */
328
329	static unsigned int nreqs; /* reqlock */
330	static unsigned int nready; /* reqlock */
331	static unsigned int npending; /* reqlock */
332	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
333	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
334
335	static xmutex_t wrklock;
336	static xmutex_t reslock;
337	static xmutex_t reqlock;
338	static xcond_t reqwait;
339
340	#if !HAVE_PREADWRITE
341	/*
342	* make our pread/pwrite emulation safe against themselves, but not against
343	* normal read/write by using a mutex. slows down execution a lot,
344	* but that's your problem, not mine.
345	*/
346	static xmutex_t preadwritelock;
347	#endif
348
349	typedef struct etp_worker
350	{
351	/* locked by wrklock */
352	struct etp_worker *prev, *next;
353
354	xthread_t tid;
355
356	/* locked by reslock, reqlock or wrklock */
357	ETP_REQ *req; /* currently processed request */
358
359	#ifdef ETP_WORKER_COMMON
360	ETP_WORKER_COMMON
361	#endif
362	} etp_worker;
363
364	static etp_worker wrk_first; /* NOT etp */
365
366	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
367	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
368
369	/* worker threads management */
370
371	static void ecb_cold
372	etp_worker_clear (etp_worker *wrk)
373	{
374	}
375
376	static void ecb_cold
377	etp_worker_free (etp_worker *wrk)
378	{
379	wrk->next->prev = wrk->prev;
380	wrk->prev->next = wrk->next;
381
382	free (wrk);
383	}
384
385	static unsigned int
386	etp_nreqs (void)
387	{
388	int retval;
389	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
390	retval = nreqs;
391	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
392	return retval;
393	}
394
395	static unsigned int
396	etp_nready (void)
397	{
398	unsigned int retval;
399
400	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
401	retval = nready;
402	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
403
404	return retval;
405	}
406
407	static unsigned int
408	etp_npending (void)
409	{
410	unsigned int retval;
411
412	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
413	retval = npending;
414	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
415
416	return retval;
417	}
418
419	static unsigned int
420	etp_nthreads (void)
421	{
422	unsigned int retval;
423
424	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
425	retval = started;
426	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
427
428	return retval;
429	}
430
431	/*
432	* a somewhat faster data structure might be nice, but
433	* with 8 priorities this actually needs <20 insns
434	* per shift, the most expensive operation.
435	*/
436	typedef struct {
437	ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
438	int size;
439	} etp_reqq;
440
441	static etp_reqq req_queue;
442	static etp_reqq res_queue;
443
444	static void ecb_noinline ecb_cold
445	reqq_init (etp_reqq *q)
446	{
447	int pri;
448
449	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
450	q->qs[pri] = q->qe[pri] = 0;
451
452	q->size = 0;
453	}
454
455	static int ecb_noinline
456	reqq_push (etp_reqq *q, ETP_REQ *req)
457	{
458	int pri = req->pri;
459	req->next = 0;
460
461	if (q->qe[pri])
462	{
463	q->qe[pri]->next = req;
464	q->qe[pri] = req;
465	}
466	else
467	q->qe[pri] = q->qs[pri] = req;
468
469	return q->size++;
470	}
471
472	static ETP_REQ * ecb_noinline
473	reqq_shift (etp_reqq *q)
474	{
475	int pri;
476
477	if (!q->size)
478	return 0;
479
480	--q->size;
481
482	for (pri = ETP_NUM_PRI; pri--; )
483	{
484	eio_req *req = q->qs[pri];
485
486	if (req)
487	{
488	if (!(q->qs[pri] = (eio_req *)req->next))
489	q->qe[pri] = 0;
490
491	return req;
492	}
493	}
494
495	abort ();
496	}
497
498	static int ecb_cold
499	etp_init (void (*want_poll)(void), void (*done_poll)(void))
500	{
501	X_MUTEX_CREATE (wrklock);
502	X_MUTEX_CREATE (reslock);
503	X_MUTEX_CREATE (reqlock);
504	X_COND_CREATE (reqwait);
505
506	reqq_init (&req_queue);
507	reqq_init (&res_queue);
508
509	wrk_first.next =
510	wrk_first.prev = &wrk_first;
511
512	started = 0;
513	idle = 0;
514	nreqs = 0;
515	nready = 0;
516	npending = 0;
517
518	want_poll_cb = want_poll;
519	done_poll_cb = done_poll;
520
521	return 0;
522	}
523
524	X_THREAD_PROC (etp_proc);
525
526	static void ecb_cold
527	etp_start_thread (void)
528	{
529	etp_worker *wrk = calloc (1, sizeof (etp_worker));
530
531	/*TODO*/
532	assert (("unable to allocate worker thread data", wrk));
533
534	X_LOCK (wrklock);
535
536	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
537	{
538	wrk->prev = &wrk_first;
539	wrk->next = wrk_first.next;
540	wrk_first.next->prev = wrk;
541	wrk_first.next = wrk;
542	++started;
543	}
544	else
545	free (wrk);
546
547	X_UNLOCK (wrklock);
548	}
549
550	static void
551	etp_maybe_start_thread (void)
552	{
553	if (ecb_expect_true (etp_nthreads () >= wanted))
554	return;
555
556	/* todo: maybe use idle here, but might be less exact */
557	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
558	return;
559
560	etp_start_thread ();
561	}
562
563	static void ecb_cold
564	etp_end_thread (void)
565	{
566	eio_req *req = calloc (1, sizeof (eio_req));
567
568	req->type = -1;
569	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
570
571	X_LOCK (reqlock);
572	reqq_push (&req_queue, req);
573	X_COND_SIGNAL (reqwait);
574	X_UNLOCK (reqlock);
575
576	X_LOCK (wrklock);
577	--started;
578	X_UNLOCK (wrklock);
579	}
580
581	static int
582	etp_poll (void)
583	{
584	unsigned int maxreqs;
585	unsigned int maxtime;
586	struct timeval tv_start, tv_now;
587
588	X_LOCK (reslock);
589	maxreqs = max_poll_reqs;
590	maxtime = max_poll_time;
591	X_UNLOCK (reslock);
592
593	if (maxtime)
594	gettimeofday (&tv_start, 0);
595
596	for (;;)
597	{
598	ETP_REQ *req;
599
600	etp_maybe_start_thread ();
601
602	X_LOCK (reslock);
603	req = reqq_shift (&res_queue);
604
605	if (req)
606	{
607	--npending;
608
609	if (!res_queue.size && done_poll_cb)
610	done_poll_cb ();
611	}
612
613	X_UNLOCK (reslock);
614
615	if (!req)
616	return 0;
617
618	X_LOCK (reqlock);
619	--nreqs;
620	X_UNLOCK (reqlock);
621
622	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
623	{
624	req->int1 = 1; /* mark request as delayed */
625	continue;
626	}
627	else
628	{
629	int res = ETP_FINISH (req);
630	if (ecb_expect_false (res))
631	return res;
632	}
633
634	if (ecb_expect_false (maxreqs && !--maxreqs))
635	break;
636
637	if (maxtime)
638	{
639	gettimeofday (&tv_now, 0);
640
641	if (tvdiff (&tv_start, &tv_now) >= maxtime)
642	break;
643	}
644	}
645
646	errno = EAGAIN;
647	return -1;
648	}
649
650	static void
651	etp_cancel (ETP_REQ *req)
652	{
653	req->cancelled = 1;
654
655	eio_grp_cancel (req);
656	}
657
658	static void
659	etp_submit (ETP_REQ *req)
660	{
661	req->pri -= ETP_PRI_MIN;
662
663	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
664	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
665
666	if (ecb_expect_false (req->type == EIO_GROUP))
667	{
668	/* I hope this is worth it :/ */
669	X_LOCK (reqlock);
670	++nreqs;
671	X_UNLOCK (reqlock);
672
673	X_LOCK (reslock);
674
675	++npending;
676
677	if (!reqq_push (&res_queue, req) && want_poll_cb)
678	want_poll_cb ();
679
680	X_UNLOCK (reslock);
681	}
682	else
683	{
684	X_LOCK (reqlock);
685	++nreqs;
686	++nready;
687	reqq_push (&req_queue, req);
688	X_COND_SIGNAL (reqwait);
689	X_UNLOCK (reqlock);
690
691	etp_maybe_start_thread ();
692	}
693	}
694
695	static void ecb_cold
696	etp_set_max_poll_time (double nseconds)
697	{
698	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
699	max_poll_time = nseconds * EIO_TICKS;
700	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
701	}
702
703	static void ecb_cold
704	etp_set_max_poll_reqs (unsigned int maxreqs)
705	{
706	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
707	max_poll_reqs = maxreqs;
708	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
709	}
710
711	static void ecb_cold
712	etp_set_max_idle (unsigned int nthreads)
713	{
714	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
715	max_idle = nthreads;
716	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
717	}
718
719	static void ecb_cold
720	etp_set_idle_timeout (unsigned int seconds)
721	{
722	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
723	idle_timeout = seconds;
724	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
725	}
726
727	static void ecb_cold
728	etp_set_min_parallel (unsigned int nthreads)
729	{
730	if (wanted < nthreads)
731	wanted = nthreads;
732	}
733
734	static void ecb_cold
735	etp_set_max_parallel (unsigned int nthreads)
736	{
737	if (wanted > nthreads)
738	wanted = nthreads;
739
740	while (started > wanted)
741	etp_end_thread ();
742	}
743		393
744	/*****************************************************************************/	394	/*****************************************************************************/
745		395
746	static void	396	static void
747	grp_try_feed (eio_req *grp)	397	grp_try_feed (eio_req *grp)
748	{	398	{
749	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	399	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
750	{	400	{
751	grp->flags &= ~EIO_FLAG_GROUPADD;	401	grp->flags &= ~ETP_FLAG_GROUPADD;
752		402
753	EIO_FEED (grp);	403	EIO_FEED (grp);
754		404
755	/* stop if no progress has been made */	405	/* stop if no progress has been made */
756	if (!(grp->flags & EIO_FLAG_GROUPADD))	406	if (!(grp->flags & ETP_FLAG_GROUPADD))
757	{	407	{
758	grp->feed = 0;	408	grp->feed = 0;
759	break;	409	break;
760	}	410	}
761	}	411	}
…		…
768		418
769	/* call feeder, if applicable */	419	/* call feeder, if applicable */
770	grp_try_feed (grp);	420	grp_try_feed (grp);
771		421
772	/* finish, if done */	422	/* finish, if done */
773	if (!grp->size && grp->int1)	423	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
774	return eio_finish (grp);	424	return eio_finish (grp);
775	else	425	else
776	return 0;	426	return 0;
777	}	427	}
778		428
…		…
814	}	464	}
815		465
816	void	466	void
817	eio_grp_cancel (eio_req *grp)	467	eio_grp_cancel (eio_req *grp)
818	{	468	{
819	for (grp = grp->grp_first; grp; grp = grp->grp_next)	469	etp_grp_cancel (EIO_POOL, grp);
820	eio_cancel (grp);
821	}	470	}
822		471
823	void	472	void
824	eio_cancel (eio_req *req)	473	eio_cancel (eio_req *req)
825	{	474	{
826	etp_cancel (req);	475	etp_cancel (EIO_POOL, req);
827	}	476	}
828		477
829	void	478	void
830	eio_submit (eio_req *req)	479	eio_submit (eio_req *req)
831	{	480	{
832	etp_submit (req);	481	etp_submit (EIO_POOL, req);
833	}	482	}
834		483
835	unsigned int	484	unsigned int
836	eio_nreqs (void)	485	eio_nreqs (void)
837	{	486	{
838	return etp_nreqs ();	487	return etp_nreqs (EIO_POOL);
839	}	488	}
840		489
841	unsigned int	490	unsigned int
842	eio_nready (void)	491	eio_nready (void)
843	{	492	{
844	return etp_nready ();	493	return etp_nready (EIO_POOL);
845	}	494	}
846		495
847	unsigned int	496	unsigned int
848	eio_npending (void)	497	eio_npending (void)
849	{	498	{
850	return etp_npending ();	499	return etp_npending (EIO_POOL);
851	}	500	}
852		501
853	unsigned int ecb_cold	502	unsigned int ecb_cold
854	eio_nthreads (void)	503	eio_nthreads (void)
855	{	504	{
856	return etp_nthreads ();	505	return etp_nthreads (EIO_POOL);
857	}	506	}
858		507
859	void ecb_cold	508	void ecb_cold
860	eio_set_max_poll_time (double nseconds)	509	eio_set_max_poll_time (double nseconds)
861	{	510	{
862	etp_set_max_poll_time (nseconds);	511	etp_set_max_poll_time (EIO_POOL, nseconds);
863	}	512	}
864		513
865	void ecb_cold	514	void ecb_cold
866	eio_set_max_poll_reqs (unsigned int maxreqs)	515	eio_set_max_poll_reqs (unsigned int maxreqs)
867	{	516	{
868	etp_set_max_poll_reqs (maxreqs);	517	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
869	}	518	}
870		519
871	void ecb_cold	520	void ecb_cold
872	eio_set_max_idle (unsigned int nthreads)	521	eio_set_max_idle (unsigned int nthreads)
873	{	522	{
874	etp_set_max_idle (nthreads);	523	etp_set_max_idle (EIO_POOL, nthreads);
875	}	524	}
876		525
877	void ecb_cold	526	void ecb_cold
878	eio_set_idle_timeout (unsigned int seconds)	527	eio_set_idle_timeout (unsigned int seconds)
879	{	528	{
880	etp_set_idle_timeout (seconds);	529	etp_set_idle_timeout (EIO_POOL, seconds);
881	}	530	}
882		531
883	void ecb_cold	532	void ecb_cold
884	eio_set_min_parallel (unsigned int nthreads)	533	eio_set_min_parallel (unsigned int nthreads)
885	{	534	{
886	etp_set_min_parallel (nthreads);	535	etp_set_min_parallel (EIO_POOL, nthreads);
887	}	536	}
888		537
889	void ecb_cold	538	void ecb_cold
890	eio_set_max_parallel (unsigned int nthreads)	539	eio_set_max_parallel (unsigned int nthreads)
891	{	540	{
892	etp_set_max_parallel (nthreads);	541	etp_set_max_parallel (EIO_POOL, nthreads);
893	}	542	}
894		543
895	int eio_poll (void)	544	int eio_poll (void)
896	{	545	{
897	return etp_poll ();	546	return etp_poll (EIO_POOL);
898	}	547	}
899		548
900	/*****************************************************************************/	549	/*****************************************************************************/
901	/* work around various missing functions */	550	/* work around various missing functions */
902
903	#if !HAVE_PREADWRITE
904	# undef pread
905	# undef pwrite
906	# define pread eio__pread
907	# define pwrite eio__pwrite
908
909	static eio_ssize_t
910	eio__pread (int fd, void *buf, size_t count, off_t offset)
911	{
912	eio_ssize_t res;
913	off_t ooffset;
914
915	X_LOCK (preadwritelock);
916	ooffset = lseek (fd, 0, SEEK_CUR);
917	lseek (fd, offset, SEEK_SET);
918	res = read (fd, buf, count);
919	lseek (fd, ooffset, SEEK_SET);
920	X_UNLOCK (preadwritelock);
921
922	return res;
923	}
924
925	static eio_ssize_t
926	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
927	{
928	eio_ssize_t res;
929	off_t ooffset;
930
931	X_LOCK (preadwritelock);
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, ooffset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941		551
942	#ifndef HAVE_UTIMES	552	#ifndef HAVE_UTIMES
943		553
944	# undef utimes	554	# undef utimes
945	# define utimes(path,times) eio__utimes (path, times)	555	# define utimes(path,times) eio__utimes (path, times)
…		…
987	int res;	597	int res;
988		598
989	#if HAVE_SYS_SYNCFS	599	#if HAVE_SYS_SYNCFS
990	res = (int)syscall (__NR_syncfs, (int)(fd));	600	res = (int)syscall (__NR_syncfs, (int)(fd));
991	#else	601	#else
992	res = -1;	602	res = EIO_ENOSYS ();
993	errno = ENOSYS;
994	#endif	603	#endif
995		604
996	if (res < 0 && errno == ENOSYS && fd >= 0)	605	if (res < 0 && errno == ENOSYS && fd >= 0)
997	sync ();	606	sync ();
998		607
…		…
1028	}	637	}
1029		638
1030	static int	639	static int
1031	eio__fallocate (int fd, int mode, off_t offset, size_t len)	640	eio__fallocate (int fd, int mode, off_t offset, size_t len)
1032	{	641	{
1033	#if HAVE_FALLOCATE	642	#if HAVE_LINUX_FALLOCATE
1034	return fallocate (fd, mode, offset, len);	643	return fallocate (fd, mode, offset, len);
1035	#else	644	#else
1036	errno = ENOSYS;	645	return EIO_ENOSYS ();
1037	return -1;
1038	#endif	646	#endif
1039	}	647	}
1040		648
1041	#if !HAVE_READAHEAD	649	#if !HAVE_READAHEAD
1042	# undef readahead	650	# undef readahead
…		…
1057	todo -= len;	665	todo -= len;
1058	}	666	}
1059		667
1060	FUBd;	668	FUBd;
1061		669
1062	errno = 0;	670	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		671	/* but not for e.g. EIO or eof, so we also never fail */
1063	return count;	672	return 0;
1064	}	673	}
1065		674
1066	#endif	675	#endif
1067		676
1068	/* sendfile always needs emulation */	677	/* sendfile always needs emulation */
…		…
1103		712
1104	/* according to source inspection, this is correct, and useful behaviour */	713	/* according to source inspection, this is correct, and useful behaviour */
1105	if (sbytes)	714	if (sbytes)
1106	res = sbytes;	715	res = sbytes;
1107		716
1108	# elif defined (__APPLE__)	717	# elif defined __APPLE__
1109	off_t sbytes = count;	718	off_t sbytes = count;
1110	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	719	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1111		720
1112	/* according to the manpage, sbytes is always valid */	721	/* according to the manpage, sbytes is always valid */
1113	if (sbytes)	722	if (sbytes)
…		…
1140	HANDLE h = TO_SOCKET (ifd);	749	HANDLE h = TO_SOCKET (ifd);
1141	SetFilePointer (h, offset, 0, FILE_BEGIN);	750	SetFilePointer (h, offset, 0, FILE_BEGIN);
1142	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	751	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1143		752
1144	#else	753	#else
1145	res = -1;	754	res = EIO_ENOSYS ();
1146	errno = ENOSYS;
1147	#endif	755	#endif
1148		756
1149	/* we assume sendfile can copy at least 128mb in one go */	757	/* we assume sendfile can copy at least 128mb in one go */
1150	if (res <= 128 * 1024 * 1024)	758	if (res <= 128 * 1024 * 1024)
1151	{	759	{
…		…
1338		946
1339	/*****************************************************************************/	947	/*****************************************************************************/
1340	/* requests implemented outside eio_execute, because they are so large */	948	/* requests implemented outside eio_execute, because they are so large */
1341		949
1342	static void	950	static void
1343	eio__realpath (eio_req *req, etp_worker *self)	951	eio__lseek (eio_req *req)
1344	{	952	{
1345	char *rel = req->ptr1;	953	/* this usually gets optimised away completely, or your compiler sucks, */
		954	/* or the whence constants really are not 0, 1, 2 */
		955	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		956	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		957	: req->int2 == EIO_SEEK_END ? SEEK_END
		958	: req->int2;
		959
		960	req->offs = lseek (req->int1, req->offs, whence);
		961	req->result = req->offs == (off_t)-1 ? -1 : 0;
		962	}
		963
		964	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		965	static int
		966	eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		967	{
1346	char *res;	968	char *res;
		969	const char *rel = path;
1347	char *tmp1, *tmp2;	970	char *tmp1, *tmp2;
1348	#if SYMLOOP_MAX > 32	971	#if SYMLOOP_MAX > 32
1349	int symlinks = SYMLOOP_MAX;	972	int symlinks = SYMLOOP_MAX;
1350	#else	973	#else
1351	int symlinks = 32;	974	int symlinks = 32;
1352	#endif	975	#endif
1353		976
1354	req->result = -1;
1355
1356	errno = EINVAL;	977	errno = EINVAL;
1357	if (!rel)	978	if (!rel)
1358	return;	979	return -1;
1359		980
1360	errno = ENOENT;	981	errno = ENOENT;
1361	if (!*rel)	982	if (!*rel)
1362	return;	983	return -1;
1363		984
1364	if (!req->ptr2)	985	res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
1365	{	986	#ifdef _WIN32
1366	X_LOCK (wrklock);	987	if (_access (rel, 4) != 0)
1367	req->flags |= EIO_FLAG_PTR2_FREE;
1368	X_UNLOCK (wrklock);
1369	req->ptr2 = malloc (PATH_MAX * 3);
1370
1371	errno = ENOMEM;
1372	if (!req->ptr2)
1373	return;	988	return -1;
1374	}
1375		989
1376	res = req->ptr2;	990	symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0);
		991
		992	errno = ENAMETOOLONG;
		993	if (symlinks >= EIO_PATH_MAX * 3)
		994	return -1;
		995
		996	errno = EIO;
		997	if (symlinks <= 0)
		998	return -1;
		999
		1000	return symlinks;
		1001
		1002	#else
1377	tmp1 = res + PATH_MAX;	1003	tmp1 = res + EIO_PATH_MAX;
1378	tmp2 = tmp1 + PATH_MAX;	1004	tmp2 = tmp1 + EIO_PATH_MAX;
1379		1005
1380	#if 0 /* disabled, the musl way to do things is just too racy */	1006	#if 0 /* disabled, the musl way to do things is just too racy */
1381	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1007	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1382	/* on linux we may be able to ask the kernel */	1008	/* on linux we may be able to ask the kernel */
1383	{	1009	{
1384	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);	1010	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1385		1011
1386	if (fd >= 0)	1012	if (fd >= 0)
1387	{	1013	{
1388	sprintf (tmp1, "/proc/self/fd/%d", fd);	1014	sprintf (tmp1, "/proc/self/fd/%d", fd);
1389	req->result = readlink (tmp1, res, PATH_MAX);	1015	req->result = readlink (tmp1, res, EIO_PATH_MAX);
		1016	/* here we should probably stat the open file and the disk file, to make sure they still match */
1390	close (fd);	1017	close (fd);
1391
1392	/* here we should probably stat the open file and the disk file, to make sure they still match */
1393		1018
1394	if (req->result > 0)	1019	if (req->result > 0)
1395	goto done;	1020	goto done;
1396	}	1021	}
1397	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)	1022	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1398	return;	1023	return -1;
1399	}	1024	}
1400	#endif	1025	#endif
1401	#endif	1026	#endif
1402		1027
1403	if (*rel != '/')	1028	if (*rel != '/')
1404	{	1029	{
1405	if (!getcwd (res, PATH_MAX))	1030	int len;
		1031
		1032	errno = ENOENT;
		1033	if (wd == EIO_INVALID_WD)
1406	return;	1034	return -1;
		1035
		1036	if (wd == EIO_CWD)
		1037	{
		1038	if (!getcwd (res, EIO_PATH_MAX))
		1039	return -1;
		1040
		1041	len = strlen (res);
		1042	}
		1043	else
		1044	memcpy (res, wd->str, len = wd->len);
1407		1045
1408	if (res [1]) /* only use if not / */	1046	if (res [1]) /* only use if not / */
1409	res += strlen (res);	1047	res += len;
1410	}	1048	}
1411		1049
1412	while (*rel)	1050	while (*rel)
1413	{	1051	{
1414	eio_ssize_t len, linklen;	1052	eio_ssize_t len, linklen;
1415	char *beg = rel;	1053	const char *beg = rel;
1416		1054
1417	while (*rel && *rel != '/')	1055	while (*rel && *rel != '/')
1418	++rel;	1056	++rel;
1419		1057
1420	len = rel - beg;	1058	len = rel - beg;
…		…
1432		1070
1433	if (beg [1] == '.' && len == 2)	1071	if (beg [1] == '.' && len == 2)
1434	{	1072	{
1435	/* .. - back up one component, if possible */	1073	/* .. - back up one component, if possible */
1436		1074
1437	while (res != req->ptr2)	1075	while (res != tmpbuf->ptr)
1438	if (*--res == '/')	1076	if (*--res == '/')
1439	break;	1077	break;
1440		1078
1441	continue;	1079	continue;
1442	}	1080	}
1443	}	1081	}
1444		1082
1445	errno = ENAMETOOLONG;	1083	errno = ENAMETOOLONG;
1446	if (res + 1 + len + 1 >= tmp1)	1084	if (res + 1 + len + 1 >= tmp1)
1447	return;	1085	return -1;
1448		1086
1449	/* copy one component */	1087	/* copy one component */
1450	*res = '/';	1088	*res = '/';
1451	memcpy (res + 1, beg, len);	1089	memcpy (res + 1, beg, len);
1452		1090
1453	/* zero-terminate, for readlink */	1091	/* zero-terminate, for readlink */
1454	res [len + 1] = 0;	1092	res [len + 1] = 0;
1455		1093
1456	/* now check if it's a symlink */	1094	/* now check if it's a symlink */
1457	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1095	linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1458		1096
1459	if (linklen < 0)	1097	if (linklen < 0)
1460	{	1098	{
1461	if (errno != EINVAL)	1099	if (errno != EINVAL)
1462	return;	1100	return -1;
1463		1101
1464	/* it's a normal directory. hopefully */	1102	/* it's a normal directory. hopefully */
1465	res += len + 1;	1103	res += len + 1;
1466	}	1104	}
1467	else	1105	else
1468	{	1106	{
1469	/* yay, it was a symlink - build new path in tmp2 */	1107	/* yay, it was a symlink - build new path in tmp2 */
1470	int rellen = strlen (rel);	1108	int rellen = strlen (rel);
1471		1109
1472	errno = ENAMETOOLONG;	1110	errno = ENAMETOOLONG;
1473	if (linklen + 1 + rellen >= PATH_MAX)	1111	if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1474	return;	1112	return -1;
1475		1113
1476	errno = ELOOP;	1114	errno = ELOOP;
1477	if (!--symlinks)	1115	if (!--symlinks)
1478	return;	1116	return -1;
1479		1117
1480	if (*tmp1 == '/')	1118	if (*tmp1 == '/')
1481	res = req->ptr2; /* symlink resolves to an absolute path */	1119	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1482		1120
1483	/* we need to be careful, as rel might point into tmp2 already */	1121	/* we need to be careful, as rel might point into tmp2 already */
1484	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1122	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1485	tmp2 [linklen] = '/';	1123	tmp2 [linklen] = '/';
1486	memcpy (tmp2, tmp1, linklen);	1124	memcpy (tmp2, tmp1, linklen);
…		…
1488	rel = tmp2;	1126	rel = tmp2;
1489	}	1127	}
1490	}	1128	}
1491		1129
1492	/* special case for the lone root path */	1130	/* special case for the lone root path */
1493	if (res == req->ptr2)	1131	if (res == tmpbuf->ptr)
1494	*res++ = '/';	1132	*res++ = '/';
1495		1133
1496	req->result = res - (char *)req->ptr2;	1134	return res - (char *)tmpbuf->ptr;
1497		1135	#endif
1498	done:
1499	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1500	}	1136	}
1501		1137
1502	static signed char	1138	static signed char
1503	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1139	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1504	{	1140	{
…		…
1692	#ifdef _WIN32	1328	#ifdef _WIN32
1693	{	1329	{
1694	int len = strlen ((const char *)req->ptr1);	1330	int len = strlen ((const char *)req->ptr1);
1695	char *path = malloc (MAX_PATH);	1331	char *path = malloc (MAX_PATH);
1696	const char *fmt;	1332	const char *fmt;
		1333	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1697		1334
1698	if (!len)	1335	if (!len)
1699	fmt = "./*";	1336	fmt = "./*";
1700	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1337	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1701	fmt = "%s*";	1338	fmt = "%s*";
1702	else	1339	else
1703	fmt = "%s/*";	1340	fmt = "%s/*";
1704		1341
1705	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1342	_snprintf (path, MAX_PATH, fmt, reqpath);
1706	dirp = FindFirstFile (path, &entp);	1343	dirp = FindFirstFile (path, &entp);
1707	free (path);	1344	free (path);
1708		1345
1709	if (dirp == INVALID_HANDLE_VALUE)	1346	if (dirp == INVALID_HANDLE_VALUE)
1710	{	1347	{
…		…
1732		1369
1733	return;	1370	return;
1734	}	1371	}
1735	}	1372	}
1736	#else	1373	#else
		1374	#if HAVE_AT
		1375	if (req->wd)
		1376	{
		1377	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1378
		1379	if (fd < 0)
		1380	return;
		1381
		1382	dirp = fdopendir (fd);
		1383
		1384	if (!dirp)
		1385	close (fd);
		1386	}
		1387	else
1737	dirp = opendir (req->ptr1);	1388	dirp = opendir (req->ptr1);
		1389	#else
		1390	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1391	#endif
1738		1392
1739	if (!dirp)	1393	if (!dirp)
1740	return;	1394	return;
1741	#endif	1395	#endif
1742		1396
…		…
1859	#ifdef DT_FIFO	1513	#ifdef DT_FIFO
1860	case DT_FIFO: ent->type = EIO_DT_FIFO; break;	1514	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1861	#endif	1515	#endif
1862	#ifdef DT_CHR	1516	#ifdef DT_CHR
1863	case DT_CHR: ent->type = EIO_DT_CHR; break;	1517	case DT_CHR: ent->type = EIO_DT_CHR; break;
1864	#endif	1518	#endif
1865	#ifdef DT_MPC	1519	#ifdef DT_MPC
1866	case DT_MPC: ent->type = EIO_DT_MPC; break;	1520	case DT_MPC: ent->type = EIO_DT_MPC; break;
1867	#endif	1521	#endif
1868	#ifdef DT_DIR	1522	#ifdef DT_DIR
1869	case DT_DIR: ent->type = EIO_DT_DIR; break;	1523	case DT_DIR: ent->type = EIO_DT_DIR; break;
1870	#endif	1524	#endif
1871	#ifdef DT_NAM	1525	#ifdef DT_NAM
1872	case DT_NAM: ent->type = EIO_DT_NAM; break;	1526	case DT_NAM: ent->type = EIO_DT_NAM; break;
1873	#endif	1527	#endif
1874	#ifdef DT_BLK	1528	#ifdef DT_BLK
1875	case DT_BLK: ent->type = EIO_DT_BLK; break;	1529	case DT_BLK: ent->type = EIO_DT_BLK; break;
1876	#endif	1530	#endif
1877	#ifdef DT_MPB	1531	#ifdef DT_MPB
1878	case DT_MPB: ent->type = EIO_DT_MPB; break;	1532	case DT_MPB: ent->type = EIO_DT_MPB; break;
1879	#endif	1533	#endif
1880	#ifdef DT_REG	1534	#ifdef DT_REG
1881	case DT_REG: ent->type = EIO_DT_REG; break;	1535	case DT_REG: ent->type = EIO_DT_REG; break;
1882	#endif	1536	#endif
1883	#ifdef DT_NWK	1537	#ifdef DT_NWK
1884	case DT_NWK: ent->type = EIO_DT_NWK; break;	1538	case DT_NWK: ent->type = EIO_DT_NWK; break;
1885	#endif	1539	#endif
1886	#ifdef DT_CMP	1540	#ifdef DT_CMP
1887	case DT_CMP: ent->type = EIO_DT_CMP; break;	1541	case DT_CMP: ent->type = EIO_DT_CMP; break;
1888	#endif	1542	#endif
1889	#ifdef DT_LNK	1543	#ifdef DT_LNK
1890	case DT_LNK: ent->type = EIO_DT_LNK; break;	1544	case DT_LNK: ent->type = EIO_DT_LNK; break;
1891	#endif	1545	#endif
1892	#ifdef DT_SOCK	1546	#ifdef DT_SOCK
1893	case DT_SOCK: ent->type = EIO_DT_SOCK; break;	1547	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
…		…
1906	{	1560	{
1907	if (ent->type == EIO_DT_UNKNOWN)	1561	if (ent->type == EIO_DT_UNKNOWN)
1908	{	1562	{
1909	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */	1563	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1910	ent->score = 1;	1564	ent->score = 1;
1911	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */	1565	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1912	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */	1566	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1913	}	1567	}
1914	else if (ent->type == EIO_DT_DIR)	1568	else if (ent->type == EIO_DT_DIR)
1915	ent->score = 0;	1569	ent->score = 0;
1916	}	1570	}
…		…
1935	#endif	1589	#endif
1936	}	1590	}
1937	}	1591	}
1938		1592
1939	/*****************************************************************************/	1593	/*****************************************************************************/
		1594	/* working directory stuff */
		1595	/* various deficiencies in the posix 2008 api force us to */
		1596	/* keep the absolute path in string form at all times */
		1597	/* fuck yeah. */
		1598
		1599	#if !HAVE_AT
		1600
		1601	/* a bit like realpath, but usually faster because it doesn'T have to return */
		1602	/* an absolute or canonical path */
		1603	static const char *
		1604	wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1605	{
		1606	if (!wd || *path == '/')
		1607	return path;
		1608
		1609	if (path [0] == '.' && !path [1])
		1610	return wd->str;
		1611
		1612	{
		1613	int l1 = wd->len;
		1614	int l2 = strlen (path);
		1615
		1616	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
		1617
		1618	memcpy (res, wd->str, l1);
		1619	res [l1] = '/';
		1620	memcpy (res + l1 + 1, path, l2 + 1);
		1621
		1622	return res;
		1623	}
		1624	}
		1625
		1626	#endif
		1627
		1628	static eio_wd
		1629	eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1630	{
		1631	int fd;
		1632	eio_wd res;
		1633	int len = eio__realpath (tmpbuf, wd, path);
		1634
		1635	if (len < 0)
		1636	return EIO_INVALID_WD;
		1637
		1638	#if HAVE_AT
		1639	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1640
		1641	if (fd < 0)
		1642	return EIO_INVALID_WD;
		1643	#endif
		1644
		1645	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		1646
		1647	#if HAVE_AT
		1648	res->fd = fd;
		1649	#endif
		1650
		1651	res->len = len;
		1652	memcpy (res->str, tmpbuf->ptr, len);
		1653	res->str [len] = 0;
		1654
		1655	return res;
		1656	}
		1657
		1658	eio_wd
		1659	eio_wd_open_sync (eio_wd wd, const char *path)
		1660	{
		1661	struct etp_tmpbuf tmpbuf = { };
		1662	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		1663	free (tmpbuf.ptr);
		1664
		1665	return wd;
		1666	}
		1667
		1668	void
		1669	eio_wd_close_sync (eio_wd wd)
		1670	{
		1671	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		1672	{
		1673	#if HAVE_AT
		1674	close (wd->fd);
		1675	#endif
		1676	free (wd);
		1677	}
		1678	}
		1679
		1680	#if HAVE_AT
		1681
		1682	/* they forgot these */
		1683
		1684	static int
		1685	eio__truncateat (int dirfd, const char *path, off_t length)
		1686	{
		1687	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		1688	int res;
		1689
		1690	if (fd < 0)
		1691	return fd;
		1692
		1693	res = ftruncate (fd, length);
		1694	close (fd);
		1695	return res;
		1696	}
		1697
		1698	static int
		1699	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		1700	{
		1701	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		1702	int res;
		1703
		1704	if (fd < 0)
		1705	return fd;
		1706
		1707	res = fstatvfs (fd, buf);
		1708	close (fd);
		1709	return res;
		1710
		1711	}
		1712
		1713	#endif
		1714
		1715	/*****************************************************************************/
1940		1716
1941	#define ALLOC(len) \	1717	#define ALLOC(len) \
1942	if (!req->ptr2) \	1718	if (!req->ptr2) \
1943	{ \	1719	{ \
1944	X_LOCK (wrklock); \	1720	X_LOCK (EIO_POOL->wrklock); \
1945	req->flags |= EIO_FLAG_PTR2_FREE; \	1721	req->flags |= EIO_FLAG_PTR2_FREE; \
1946	X_UNLOCK (wrklock); \	1722	X_UNLOCK (EIO_POOL->wrklock); \
1947	req->ptr2 = malloc (len); \	1723	req->ptr2 = malloc (len); \
1948	if (!req->ptr2) \	1724	if (!req->ptr2) \
1949	{ \	1725	{ \
1950	errno = ENOMEM; \	1726	errno = ENOMEM; \
1951	req->result = -1; \	1727	req->result = -1; \
1952	break; \	1728	break; \
1953	} \	1729	} \
1954	}	1730	}
1955		1731
1956	X_THREAD_PROC (etp_proc)
1957	{
1958	ETP_REQ *req;
1959	struct timespec ts;
1960	etp_worker *self = (etp_worker *)thr_arg;
1961
1962	#if HAVE_PRCTL_SET_NAME
1963	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
1964	#endif
1965
1966	/* try to distribute timeouts somewhat evenly */
1967	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1968
1969	for (;;)
1970	{
1971	ts.tv_sec = 0;
1972
1973	X_LOCK (reqlock);
1974
1975	for (;;)
1976	{
1977	self->req = req = reqq_shift (&req_queue);
1978
1979	if (req)
1980	break;
1981
1982	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1983	{
1984	X_UNLOCK (reqlock);
1985	X_LOCK (wrklock);
1986	--started;
1987	X_UNLOCK (wrklock);
1988	goto quit;
1989	}
1990
1991	++idle;
1992
1993	if (idle <= max_idle)
1994	/* we are allowed to idle, so do so without any timeout */
1995	X_COND_WAIT (reqwait, reqlock);
1996	else
1997	{
1998	/* initialise timeout once */
1999	if (!ts.tv_sec)
2000	ts.tv_sec = time (0) + idle_timeout;
2001
2002	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2003	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
2004	}
2005
2006	--idle;
2007	}
2008
2009	--nready;
2010
2011	X_UNLOCK (reqlock);
2012
2013	if (req->type < 0)
2014	goto quit;
2015
2016	ETP_EXECUTE (self, req);
2017
2018	X_LOCK (reslock);
2019
2020	++npending;
2021
2022	if (!reqq_push (&res_queue, req) && want_poll_cb)
2023	want_poll_cb ();
2024
2025	self->req = 0;
2026	etp_worker_clear (self);
2027
2028	X_UNLOCK (reslock);
2029	}
2030
2031	quit:
2032	X_LOCK (wrklock);
2033	etp_worker_free (self);
2034	X_UNLOCK (wrklock);
2035
2036	return 0;
2037	}
2038
2039	/*****************************************************************************/	1732	/*****************************************************************************/
2040		1733
2041	int ecb_cold	1734	int ecb_cold
2042	eio_init (void (*want_poll)(void), void (*done_poll)(void))	1735	eio_init (void (*want_poll)(void), void (*done_poll)(void))
2043	{	1736	{
2044	#if !HAVE_PREADWRITE	1737	eio_want_poll_cb = want_poll;
2045	X_MUTEX_CREATE (preadwritelock);	1738	eio_done_poll_cb = done_poll;
2046	#endif
2047		1739
2048	return etp_init (want_poll, done_poll);	1740	return etp_init (EIO_POOL, 0, 0, 0);
2049	}	1741	}
2050		1742
2051	ecb_inline void	1743	ecb_inline void
2052	eio_api_destroy (eio_req *req)	1744	eio_api_destroy (eio_req *req)
2053	{	1745	{
2054	free (req);	1746	free (req);
2055	}	1747	}
2056		1748
2057	#define REQ(rtype) \	1749	#define REQ(rtype) \
2058	eio_req *req; \	1750	eio_req *req; \
2059	\	1751	\
2060	req = (eio_req *)calloc (1, sizeof *req); \	1752	req = (eio_req *)calloc (1, sizeof *req); \
2061	if (!req) \	1753	if (!req) \
2062	return 0; \	1754	return 0; \
…		…
2076	{ \	1768	{ \
2077	eio_api_destroy (req); \	1769	eio_api_destroy (req); \
2078	return 0; \	1770	return 0; \
2079	}	1771	}
2080		1772
		1773	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		1774
2081	static void	1775	static void
2082	eio_execute (etp_worker *self, eio_req *req)	1776	eio_execute (etp_worker *self, eio_req *req)
2083	{	1777	{
		1778	#if HAVE_AT
		1779	int dirfd;
		1780	#else
		1781	const char *path;
		1782	#endif
		1783
2084	if (ecb_expect_false (EIO_CANCELLED (req)))	1784	if (ecb_expect_false (EIO_CANCELLED (req)))
2085	{	1785	{
2086	req->result = -1;	1786	req->result = -1;
2087	req->errorno = ECANCELED;	1787	req->errorno = ECANCELED;
2088	return;	1788	return;
2089	}	1789	}
2090		1790
		1791	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		1792	{
		1793	req->result = -1;
		1794	req->errorno = ENOENT;
		1795	return;
		1796	}
		1797
		1798	if (req->type >= EIO_OPEN)
		1799	{
		1800	#if HAVE_AT
		1801	dirfd = WD2FD (req->wd);
		1802	#else
		1803	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		1804	#endif
		1805	}
		1806
2091	switch (req->type)	1807	switch (req->type)
2092	{	1808	{
		1809	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		1810	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		1811	break;
		1812	case EIO_WD_CLOSE: req->result = 0;
		1813	eio_wd_close_sync (req->wd); break;
		1814
		1815	case EIO_SEEK: eio__lseek (req); break;
2093	case EIO_READ: ALLOC (req->size);	1816	case EIO_READ: ALLOC (req->size);
2094	req->result = req->offs >= 0	1817	req->result = req->offs >= 0
2095	? pread (req->int1, req->ptr2, req->size, req->offs)	1818	? pread (req->int1, req->ptr2, req->size, req->offs)
2096	: read (req->int1, req->ptr2, req->size); break;	1819	: read (req->int1, req->ptr2, req->size); break;
2097	case EIO_WRITE: req->result = req->offs >= 0	1820	case EIO_WRITE: req->result = req->offs >= 0
2098	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1821	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2099	: write (req->int1, req->ptr2, req->size); break;	1822	: write (req->int1, req->ptr2, req->size); break;
2100		1823
		1824	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1825	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1826
2101	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1827	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2102	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	1828	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2103		1829
		1830	#if HAVE_AT
		1831
2104	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1832	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2105	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1833	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2106	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1834	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1835	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		1836	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		1837	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		1838	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		1839	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1840
		1841	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		1842	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1843	req->result = req->wd && SINGLEDOT (req->ptr1)
		1844	? rmdir (req->wd->str)
		1845	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		1846	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		1847	case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */
		1848	req->result = req->wd && SINGLEDOT (req->ptr1)
		1849	? rename (req->wd->str, req->ptr2)
		1850	: renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		1851	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		1852	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		1853	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		1854	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1855	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1856	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1857	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX);
		1858	if (req->result == EIO_PATH_MAX)
		1859	{
		1860	req->result = -1;
		1861	errno = ENAMETOOLONG;
		1862	}
		1863	break;
		1864	case EIO_UTIME:
		1865	case EIO_FUTIME:
		1866	{
		1867	struct timespec ts[2];
		1868	struct timespec *times;
		1869
		1870	if (req->nv1 != -1. || req->nv2 != -1.)
		1871	{
		1872	ts[0].tv_sec = req->nv1;
		1873	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		1874	ts[1].tv_sec = req->nv2;
		1875	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		1876
		1877	times = ts;
		1878	}
		1879	else
		1880	times = 0;
		1881
		1882	req->result = req->type == EIO_FUTIME
		1883	? futimens (req->int1, times)
		1884	: utimensat (dirfd, req->ptr1, times, 0);
		1885	}
		1886	break;
		1887
		1888	#else
		1889
		1890	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1891	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1892	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2107	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1893	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1894	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		1895	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		1896	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		1897	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		1898
		1899	case EIO_UNLINK: req->result = unlink (path ); break;
		1900	case EIO_RMDIR: req->result = rmdir (path ); break;
		1901	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		1902	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		1903	case EIO_LINK: req->result = link (path , req->ptr2); break;
		1904	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		1905	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		1906	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1907	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1908	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1909	req->result = readlink (path, req->ptr2, EIO_PATH_MAX);
		1910	if (req->result == EIO_PATH_MAX)
		1911	{
		1912	req->result = -1;
		1913	errno = ENAMETOOLONG;
		1914	}
		1915	break;
		1916
		1917	case EIO_UTIME:
		1918	case EIO_FUTIME:
		1919	{
		1920	struct timeval tv[2];
		1921	struct timeval *times;
		1922
		1923	if (req->nv1 != -1. || req->nv2 != -1.)
		1924	{
		1925	tv[0].tv_sec = req->nv1;
		1926	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		1927	tv[1].tv_sec = req->nv2;
		1928	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		1929
		1930	times = tv;
		1931	}
		1932	else
		1933	times = 0;
		1934
		1935	req->result = req->type == EIO_FUTIME
		1936	? futimes (req->int1, times)
		1937	: utimes (req->ptr1, times);
		1938	}
		1939	break;
		1940
		1941	#endif
		1942
		1943	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		1944	{
		1945	ALLOC (req->result);
		1946	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		1947	}
		1948	break;
		1949
2108	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1950	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2109	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	1951	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2110		1952
2111	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2112	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2113	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1953	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2114	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1954	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2115		1955
2116	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2117	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	1956	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2118	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2119	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	1957	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2120	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2121	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	1958	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2122		1959
2123	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2124	case EIO_CLOSE: req->result = close (req->int1); break;	1960	case EIO_CLOSE: req->result = close (req->int1); break;
2125	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	1961	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2126	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2127	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2128	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2129	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2130	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2131	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2132	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2133
2134	case EIO_REALPATH: eio__realpath (req, self); break;
2135
2136	case EIO_READLINK: ALLOC (PATH_MAX);
2137	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2138
2139	case EIO_SYNC: req->result = 0; sync (); break;	1962	case EIO_SYNC: req->result = 0; sync (); break;
2140	case EIO_FSYNC: req->result = fsync (req->int1); break;	1963	case EIO_FSYNC: req->result = fsync (req->int1); break;
2141	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	1964	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2142	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;	1965	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2143	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	1966	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
…		…
2162	req->result = select (0, 0, 0, 0, &tv);	1985	req->result = select (0, 0, 0, 0, &tv);
2163	}	1986	}
2164	#endif	1987	#endif
2165	break;	1988	break;
2166		1989
2167	case EIO_UTIME:	1990	#if 0
2168	case EIO_FUTIME:
2169	{
2170	struct timeval tv[2];
2171	struct timeval *times;
2172
2173	if (req->nv1 != -1. || req->nv2 != -1.)
2174	{
2175	tv[0].tv_sec = req->nv1;
2176	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2177	tv[1].tv_sec = req->nv2;
2178	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2179
2180	times = tv;
2181	}
2182	else
2183	times = 0;
2184
2185	req->result = req->type == EIO_FUTIME
2186	? futimes (req->int1, times)
2187	: utimes (req->ptr1, times);
2188	}
2189	break;
2190
2191	case EIO_GROUP:	1991	case EIO_GROUP:
2192	abort (); /* handled in eio_request */	1992	abort (); /* handled in eio_request */
		1993	#endif
2193		1994
2194	case EIO_NOP:	1995	case EIO_NOP:
2195	req->result = 0;	1996	req->result = 0;
2196	break;	1997	break;
2197		1998
2198	case EIO_CUSTOM:	1999	case EIO_CUSTOM:
2199	req->feed (req);	2000	req->feed (req);
2200	break;	2001	break;
2201		2002
2202	default:	2003	default:
2203	errno = ENOSYS;
2204	req->result = -1;	2004	req->result = EIO_ENOSYS ();
2205	break;	2005	break;
2206	}	2006	}
2207		2007
2208	req->errorno = errno;	2008	req->errorno = errno;
2209	}	2009	}
2210		2010
2211	#ifndef EIO_NO_WRAPPERS	2011	#ifndef EIO_NO_WRAPPERS
2212		2012
		2013	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		2014	{
		2015	REQ (EIO_WD_OPEN); PATH; SEND;
		2016	}
		2017
		2018	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2019	{
		2020	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2021	}
		2022
2213	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2023	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2214	{	2024	{
2215	REQ (EIO_NOP); SEND;	2025	REQ (EIO_NOP); SEND;
2216	}	2026	}
2217		2027
…		…
2278	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2088	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2279	{	2089	{
2280	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2090	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2281	}	2091	}
2282		2092
		2093	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2094	{
		2095	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2096	}
		2097
2283	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2098	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2284	{	2099	{
2285	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2100	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2286	}	2101	}
2287		2102
2288	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2103	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2289	{	2104	{
2290	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2105	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2106	}
		2107
		2108	eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data)
		2109	{
		2110	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2111	}
		2112
		2113	eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data)
		2114	{
		2115	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2291	}	2116	}
2292		2117
2293	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2118	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
2294	{	2119	{
2295	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2120	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2483	void	2308	void
2484	eio_grp_add (eio_req *grp, eio_req *req)	2309	eio_grp_add (eio_req *grp, eio_req *req)
2485	{	2310	{
2486	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2311	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2487		2312
2488	grp->flags |= EIO_FLAG_GROUPADD;	2313	grp->flags |= ETP_FLAG_GROUPADD;
2489		2314
2490	++grp->size;	2315	++grp->size;
2491	req->grp = grp;	2316	req->grp = grp;
2492		2317
2493	req->grp_prev = 0;	2318	req->grp_prev = 0;

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