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Comparing libeio/eio.c (file contents):
Revision 1.105 by root, Mon Sep 26 18:23:18 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)
296
297	/*****************************************************************************/	342	/*****************************************************************************/
298		343
299	struct tmpbuf	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
300	{	358	{
301	void *ptr;	359	#if HAVE_AT
		360	int fd;
		361	#endif
302	int len;	362	int len;
		363	char str[1]; /* actually, a 0-terminated canonical path */
303	};	364	};
304
305	static void *
306	tmpbuf_get (struct tmpbuf *buf, int len)
307	{
308	if (buf->len < len)
309	{
310	free (buf->ptr);
311	buf->ptr = malloc (buf->len = len);
312	}
313
314	return buf->ptr;
315	}
316		365
317	/*****************************************************************************/	366	/*****************************************************************************/
318		367
319	#define ETP_PRI_MIN EIO_PRI_MIN	368	#define ETP_PRI_MIN EIO_PRI_MIN
320	#define ETP_PRI_MAX EIO_PRI_MAX	369	#define ETP_PRI_MAX EIO_PRI_MAX
321		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
322	struct etp_worker;	381	struct etp_worker;
323
324	#define ETP_REQ eio_req	382	#define ETP_REQ eio_req
325	#define ETP_DESTROY(req) eio_destroy (req)	383	#define ETP_DESTROY(req) eio_destroy (req)
326	static int eio_finish (eio_req *req);	384	static int eio_finish (eio_req *req);
327	#define ETP_FINISH(req) eio_finish (req)	385	#define ETP_FINISH(req) eio_finish (req)
328	static void eio_execute (struct etp_worker *self, eio_req *req);	386	static void eio_execute (struct etp_worker *self, eio_req *req);
329	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	387	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
330		388
331	/*****************************************************************************/	389	#include "etp.c"
332		390
333	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	391	static struct etp_pool eio_pool;
334		392	#define EIO_POOL (&eio_pool)
335	/* calculate time difference in ~1/EIO_TICKS of a second */
336	ecb_inline int
337	tvdiff (struct timeval *tv1, struct timeval *tv2)
338	{
339	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
340	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
341	}
342
343	static unsigned int started, idle, wanted = 4;
344
345	static void (*want_poll_cb) (void);
346	static void (*done_poll_cb) (void);
347
348	static unsigned int max_poll_time; /* reslock */
349	static unsigned int max_poll_reqs; /* reslock */
350
351	static unsigned int nreqs; /* reqlock */
352	static unsigned int nready; /* reqlock */
353	static unsigned int npending; /* reqlock */
354	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
355	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
356
357	static xmutex_t wrklock;
358	static xmutex_t reslock;
359	static xmutex_t reqlock;
360	static xcond_t reqwait;
361
362	#if !HAVE_PREADWRITE
363	/*
364	* make our pread/pwrite emulation safe against themselves, but not against
365	* normal read/write by using a mutex. slows down execution a lot,
366	* but that's your problem, not mine.
367	*/
368	static xmutex_t preadwritelock;
369	#endif
370
371	typedef struct etp_worker
372	{
373	struct tmpbuf tmpbuf;
374
375	/* locked by wrklock */
376	struct etp_worker *prev, *next;
377
378	xthread_t tid;
379
380	#ifdef ETP_WORKER_COMMON
381	ETP_WORKER_COMMON
382	#endif
383	} etp_worker;
384
385	static etp_worker wrk_first; /* NOT etp */
386
387	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
388	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
389
390	/* worker threads management */
391
392	static void ecb_cold
393	etp_worker_clear (etp_worker *wrk)
394	{
395	}
396
397	static void ecb_cold
398	etp_worker_free (etp_worker *wrk)
399	{
400	free (wrk->tmpbuf.ptr);
401
402	wrk->next->prev = wrk->prev;
403	wrk->prev->next = wrk->next;
404
405	free (wrk);
406	}
407
408	static unsigned int
409	etp_nreqs (void)
410	{
411	int retval;
412	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
413	retval = nreqs;
414	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
415	return retval;
416	}
417
418	static unsigned int
419	etp_nready (void)
420	{
421	unsigned int retval;
422
423	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
424	retval = nready;
425	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
426
427	return retval;
428	}
429
430	static unsigned int
431	etp_npending (void)
432	{
433	unsigned int retval;
434
435	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
436	retval = npending;
437	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
438
439	return retval;
440	}
441
442	static unsigned int
443	etp_nthreads (void)
444	{
445	unsigned int retval;
446
447	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
448	retval = started;
449	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
450
451	return retval;
452	}
453
454	/*
455	* a somewhat faster data structure might be nice, but
456	* with 8 priorities this actually needs <20 insns
457	* per shift, the most expensive operation.
458	*/
459	typedef struct {
460	ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
461	int size;
462	} etp_reqq;
463
464	static etp_reqq req_queue;
465	static etp_reqq res_queue;
466
467	static void ecb_noinline ecb_cold
468	reqq_init (etp_reqq *q)
469	{
470	int pri;
471
472	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
473	q->qs[pri] = q->qe[pri] = 0;
474
475	q->size = 0;
476	}
477
478	static int ecb_noinline
479	reqq_push (etp_reqq *q, ETP_REQ *req)
480	{
481	int pri = req->pri;
482	req->next = 0;
483
484	if (q->qe[pri])
485	{
486	q->qe[pri]->next = req;
487	q->qe[pri] = req;
488	}
489	else
490	q->qe[pri] = q->qs[pri] = req;
491
492	return q->size++;
493	}
494
495	static ETP_REQ * ecb_noinline
496	reqq_shift (etp_reqq *q)
497	{
498	int pri;
499
500	if (!q->size)
501	return 0;
502
503	--q->size;
504
505	for (pri = ETP_NUM_PRI; pri--; )
506	{
507	eio_req *req = q->qs[pri];
508
509	if (req)
510	{
511	if (!(q->qs[pri] = (eio_req *)req->next))
512	q->qe[pri] = 0;
513
514	return req;
515	}
516	}
517
518	abort ();
519	}
520
521	static int ecb_cold
522	etp_init (void (*want_poll)(void), void (*done_poll)(void))
523	{
524	X_MUTEX_CREATE (wrklock);
525	X_MUTEX_CREATE (reslock);
526	X_MUTEX_CREATE (reqlock);
527	X_COND_CREATE (reqwait);
528
529	reqq_init (&req_queue);
530	reqq_init (&res_queue);
531
532	wrk_first.next =
533	wrk_first.prev = &wrk_first;
534
535	started = 0;
536	idle = 0;
537	nreqs = 0;
538	nready = 0;
539	npending = 0;
540
541	want_poll_cb = want_poll;
542	done_poll_cb = done_poll;
543
544	return 0;
545	}
546
547	X_THREAD_PROC (etp_proc);
548
549	static void ecb_cold
550	etp_start_thread (void)
551	{
552	etp_worker *wrk = calloc (1, sizeof (etp_worker));
553
554	/*TODO*/
555	assert (("unable to allocate worker thread data", wrk));
556
557	X_LOCK (wrklock);
558
559	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
560	{
561	wrk->prev = &wrk_first;
562	wrk->next = wrk_first.next;
563	wrk_first.next->prev = wrk;
564	wrk_first.next = wrk;
565	++started;
566	}
567	else
568	free (wrk);
569
570	X_UNLOCK (wrklock);
571	}
572
573	static void
574	etp_maybe_start_thread (void)
575	{
576	if (ecb_expect_true (etp_nthreads () >= wanted))
577	return;
578
579	/* todo: maybe use idle here, but might be less exact */
580	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
581	return;
582
583	etp_start_thread ();
584	}
585
586	static void ecb_cold
587	etp_end_thread (void)
588	{
589	eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */
590
591	req->type = -1;
592	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
593
594	X_LOCK (reqlock);
595	reqq_push (&req_queue, req);
596	X_COND_SIGNAL (reqwait);
597	X_UNLOCK (reqlock);
598
599	X_LOCK (wrklock);
600	--started;
601	X_UNLOCK (wrklock);
602	}
603
604	static int
605	etp_poll (void)
606	{
607	unsigned int maxreqs;
608	unsigned int maxtime;
609	struct timeval tv_start, tv_now;
610
611	X_LOCK (reslock);
612	maxreqs = max_poll_reqs;
613	maxtime = max_poll_time;
614	X_UNLOCK (reslock);
615
616	if (maxtime)
617	gettimeofday (&tv_start, 0);
618
619	for (;;)
620	{
621	ETP_REQ *req;
622
623	etp_maybe_start_thread ();
624
625	X_LOCK (reslock);
626	req = reqq_shift (&res_queue);
627
628	if (req)
629	{
630	--npending;
631
632	if (!res_queue.size && done_poll_cb)
633	done_poll_cb ();
634	}
635
636	X_UNLOCK (reslock);
637
638	if (!req)
639	return 0;
640
641	X_LOCK (reqlock);
642	--nreqs;
643	X_UNLOCK (reqlock);
644
645	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
646	{
647	req->int1 = 1; /* mark request as delayed */
648	continue;
649	}
650	else
651	{
652	int res = ETP_FINISH (req);
653	if (ecb_expect_false (res))
654	return res;
655	}
656
657	if (ecb_expect_false (maxreqs && !--maxreqs))
658	break;
659
660	if (maxtime)
661	{
662	gettimeofday (&tv_now, 0);
663
664	if (tvdiff (&tv_start, &tv_now) >= maxtime)
665	break;
666	}
667	}
668
669	errno = EAGAIN;
670	return -1;
671	}
672
673	static void
674	etp_cancel (ETP_REQ *req)
675	{
676	req->cancelled = 1;
677
678	eio_grp_cancel (req);
679	}
680
681	static void
682	etp_submit (ETP_REQ *req)
683	{
684	req->pri -= ETP_PRI_MIN;
685
686	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
687	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
688
689	if (ecb_expect_false (req->type == EIO_GROUP))
690	{
691	/* I hope this is worth it :/ */
692	X_LOCK (reqlock);
693	++nreqs;
694	X_UNLOCK (reqlock);
695
696	X_LOCK (reslock);
697
698	++npending;
699
700	if (!reqq_push (&res_queue, req) && want_poll_cb)
701	want_poll_cb ();
702
703	X_UNLOCK (reslock);
704	}
705	else
706	{
707	X_LOCK (reqlock);
708	++nreqs;
709	++nready;
710	reqq_push (&req_queue, req);
711	X_COND_SIGNAL (reqwait);
712	X_UNLOCK (reqlock);
713
714	etp_maybe_start_thread ();
715	}
716	}
717
718	static void ecb_cold
719	etp_set_max_poll_time (double nseconds)
720	{
721	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
722	max_poll_time = nseconds * EIO_TICKS;
723	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
724	}
725
726	static void ecb_cold
727	etp_set_max_poll_reqs (unsigned int maxreqs)
728	{
729	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
730	max_poll_reqs = maxreqs;
731	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
732	}
733
734	static void ecb_cold
735	etp_set_max_idle (unsigned int nthreads)
736	{
737	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
738	max_idle = nthreads;
739	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
740	}
741
742	static void ecb_cold
743	etp_set_idle_timeout (unsigned int seconds)
744	{
745	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
746	idle_timeout = seconds;
747	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
748	}
749
750	static void ecb_cold
751	etp_set_min_parallel (unsigned int nthreads)
752	{
753	if (wanted < nthreads)
754	wanted = nthreads;
755	}
756
757	static void ecb_cold
758	etp_set_max_parallel (unsigned int nthreads)
759	{
760	if (wanted > nthreads)
761	wanted = nthreads;
762
763	while (started > wanted)
764	etp_end_thread ();
765	}
766		393
767	/*****************************************************************************/	394	/*****************************************************************************/
768		395
769	static void	396	static void
770	grp_try_feed (eio_req *grp)	397	grp_try_feed (eio_req *grp)
771	{	398	{
772	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	399	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
773	{	400	{
774	grp->flags &= ~EIO_FLAG_GROUPADD;	401	grp->flags &= ~ETP_FLAG_GROUPADD;
775		402
776	EIO_FEED (grp);	403	EIO_FEED (grp);
777		404
778	/* stop if no progress has been made */	405	/* stop if no progress has been made */
779	if (!(grp->flags & EIO_FLAG_GROUPADD))	406	if (!(grp->flags & ETP_FLAG_GROUPADD))
780	{	407	{
781	grp->feed = 0;	408	grp->feed = 0;
782	break;	409	break;
783	}	410	}
784	}	411	}
…		…
791		418
792	/* call feeder, if applicable */	419	/* call feeder, if applicable */
793	grp_try_feed (grp);	420	grp_try_feed (grp);
794		421
795	/* finish, if done */	422	/* finish, if done */
796	if (!grp->size && grp->int1)	423	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
797	return eio_finish (grp);	424	return eio_finish (grp);
798	else	425	else
799	return 0;	426	return 0;
800	}	427	}
801		428
…		…
837	}	464	}
838		465
839	void	466	void
840	eio_grp_cancel (eio_req *grp)	467	eio_grp_cancel (eio_req *grp)
841	{	468	{
842	for (grp = grp->grp_first; grp; grp = grp->grp_next)	469	etp_grp_cancel (EIO_POOL, grp);
843	eio_cancel (grp);
844	}	470	}
845		471
846	void	472	void
847	eio_cancel (eio_req *req)	473	eio_cancel (eio_req *req)
848	{	474	{
849	etp_cancel (req);	475	etp_cancel (EIO_POOL, req);
850	}	476	}
851		477
852	void	478	void
853	eio_submit (eio_req *req)	479	eio_submit (eio_req *req)
854	{	480	{
855	etp_submit (req);	481	etp_submit (EIO_POOL, req);
856	}	482	}
857		483
858	unsigned int	484	unsigned int
859	eio_nreqs (void)	485	eio_nreqs (void)
860	{	486	{
861	return etp_nreqs ();	487	return etp_nreqs (EIO_POOL);
862	}	488	}
863		489
864	unsigned int	490	unsigned int
865	eio_nready (void)	491	eio_nready (void)
866	{	492	{
867	return etp_nready ();	493	return etp_nready (EIO_POOL);
868	}	494	}
869		495
870	unsigned int	496	unsigned int
871	eio_npending (void)	497	eio_npending (void)
872	{	498	{
873	return etp_npending ();	499	return etp_npending (EIO_POOL);
874	}	500	}
875		501
876	unsigned int ecb_cold	502	unsigned int ecb_cold
877	eio_nthreads (void)	503	eio_nthreads (void)
878	{	504	{
879	return etp_nthreads ();	505	return etp_nthreads (EIO_POOL);
880	}	506	}
881		507
882	void ecb_cold	508	void ecb_cold
883	eio_set_max_poll_time (double nseconds)	509	eio_set_max_poll_time (double nseconds)
884	{	510	{
885	etp_set_max_poll_time (nseconds);	511	etp_set_max_poll_time (EIO_POOL, nseconds);
886	}	512	}
887		513
888	void ecb_cold	514	void ecb_cold
889	eio_set_max_poll_reqs (unsigned int maxreqs)	515	eio_set_max_poll_reqs (unsigned int maxreqs)
890	{	516	{
891	etp_set_max_poll_reqs (maxreqs);	517	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
892	}	518	}
893		519
894	void ecb_cold	520	void ecb_cold
895	eio_set_max_idle (unsigned int nthreads)	521	eio_set_max_idle (unsigned int nthreads)
896	{	522	{
897	etp_set_max_idle (nthreads);	523	etp_set_max_idle (EIO_POOL, nthreads);
898	}	524	}
899		525
900	void ecb_cold	526	void ecb_cold
901	eio_set_idle_timeout (unsigned int seconds)	527	eio_set_idle_timeout (unsigned int seconds)
902	{	528	{
903	etp_set_idle_timeout (seconds);	529	etp_set_idle_timeout (EIO_POOL, seconds);
904	}	530	}
905		531
906	void ecb_cold	532	void ecb_cold
907	eio_set_min_parallel (unsigned int nthreads)	533	eio_set_min_parallel (unsigned int nthreads)
908	{	534	{
909	etp_set_min_parallel (nthreads);	535	etp_set_min_parallel (EIO_POOL, nthreads);
910	}	536	}
911		537
912	void ecb_cold	538	void ecb_cold
913	eio_set_max_parallel (unsigned int nthreads)	539	eio_set_max_parallel (unsigned int nthreads)
914	{	540	{
915	etp_set_max_parallel (nthreads);	541	etp_set_max_parallel (EIO_POOL, nthreads);
916	}	542	}
917		543
918	int eio_poll (void)	544	int eio_poll (void)
919	{	545	{
920	return etp_poll ();	546	return etp_poll (EIO_POOL);
921	}	547	}
922		548
923	/*****************************************************************************/	549	/*****************************************************************************/
924	/* work around various missing functions */	550	/* work around various missing functions */
925
926	#if !HAVE_PREADWRITE
927	# undef pread
928	# undef pwrite
929	# define pread eio__pread
930	# define pwrite eio__pwrite
931
932	static eio_ssize_t
933	eio__pread (int fd, void *buf, size_t count, off_t offset)
934	{
935	eio_ssize_t res;
936	off_t ooffset;
937
938	X_LOCK (preadwritelock);
939	ooffset = lseek (fd, 0, SEEK_CUR);
940	lseek (fd, offset, SEEK_SET);
941	res = read (fd, buf, count);
942	lseek (fd, ooffset, SEEK_SET);
943	X_UNLOCK (preadwritelock);
944
945	return res;
946	}
947
948	static eio_ssize_t
949	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
950	{
951	eio_ssize_t res;
952	off_t ooffset;
953
954	X_LOCK (preadwritelock);
955	ooffset = lseek (fd, 0, SEEK_CUR);
956	lseek (fd, offset, SEEK_SET);
957	res = write (fd, buf, count);
958	lseek (fd, ooffset, SEEK_SET);
959	X_UNLOCK (preadwritelock);
960
961	return res;
962	}
963	#endif
964		551
965	#ifndef HAVE_UTIMES	552	#ifndef HAVE_UTIMES
966		553
967	# undef utimes	554	# undef utimes
968	# define utimes(path,times) eio__utimes (path, times)	555	# define utimes(path,times) eio__utimes (path, times)
…		…
1010	int res;	597	int res;
1011		598
1012	#if HAVE_SYS_SYNCFS	599	#if HAVE_SYS_SYNCFS
1013	res = (int)syscall (__NR_syncfs, (int)(fd));	600	res = (int)syscall (__NR_syncfs, (int)(fd));
1014	#else	601	#else
1015	res = -1;	602	res = EIO_ENOSYS ();
1016	errno = ENOSYS;
1017	#endif	603	#endif
1018		604
1019	if (res < 0 && errno == ENOSYS && fd >= 0)	605	if (res < 0 && errno == ENOSYS && fd >= 0)
1020	sync ();	606	sync ();
1021		607
…		…
1051	}	637	}
1052		638
1053	static int	639	static int
1054	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)
1055	{	641	{
1056	#if HAVE_FALLOCATE	642	#if HAVE_LINUX_FALLOCATE
1057	return fallocate (fd, mode, offset, len);	643	return fallocate (fd, mode, offset, len);
1058	#else	644	#else
1059	errno = ENOSYS;	645	return EIO_ENOSYS ();
1060	return -1;
1061	#endif	646	#endif
1062	}	647	}
1063		648
1064	#if !HAVE_READAHEAD	649	#if !HAVE_READAHEAD
1065	# undef readahead	650	# undef readahead
…		…
1080	todo -= len;	665	todo -= len;
1081	}	666	}
1082		667
1083	FUBd;	668	FUBd;
1084		669
1085	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 */
1086	return count;	672	return 0;
1087	}	673	}
1088		674
1089	#endif	675	#endif
1090		676
1091	/* sendfile always needs emulation */	677	/* sendfile always needs emulation */
…		…
1126		712
1127	/* according to source inspection, this is correct, and useful behaviour */	713	/* according to source inspection, this is correct, and useful behaviour */
1128	if (sbytes)	714	if (sbytes)
1129	res = sbytes;	715	res = sbytes;
1130		716
1131	# elif defined (__APPLE__)	717	# elif defined __APPLE__
1132	off_t sbytes = count;	718	off_t sbytes = count;
1133	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	719	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1134		720
1135	/* according to the manpage, sbytes is always valid */	721	/* according to the manpage, sbytes is always valid */
1136	if (sbytes)	722	if (sbytes)
…		…
1163	HANDLE h = TO_SOCKET (ifd);	749	HANDLE h = TO_SOCKET (ifd);
1164	SetFilePointer (h, offset, 0, FILE_BEGIN);	750	SetFilePointer (h, offset, 0, FILE_BEGIN);
1165	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	751	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1166		752
1167	#else	753	#else
1168	res = -1;	754	res = EIO_ENOSYS ();
1169	errno = ENOSYS;
1170	#endif	755	#endif
1171		756
1172	/* we assume sendfile can copy at least 128mb in one go */	757	/* we assume sendfile can copy at least 128mb in one go */
1173	if (res <= 128 * 1024 * 1024)	758	if (res <= 128 * 1024 * 1024)
1174	{	759	{
…		…
1360	}	945	}
1361		946
1362	/*****************************************************************************/	947	/*****************************************************************************/
1363	/* requests implemented outside eio_execute, because they are so large */	948	/* requests implemented outside eio_execute, because they are so large */
1364		949
1365	/* copies some absolute path to tmpbuf */	950	static void
1366	static char *	951	eio__lseek (eio_req *req)
1367	eio__getwd (struct tmpbuf *tmpbuf, eio_wd wd)
1368	{	952	{
1369	if (wd == EIO_CWD)	953	/* this usually gets optimised away completely, or your compiler sucks, */
1370	return getcwd (tmpbuf->ptr, PATH_MAX);	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;
1371		959
1372	#if HAVE_AT	960	req->offs = lseek (req->int1, req->offs, whence);
1373	abort (); /*TODO*/	961	req->result = req->offs == (off_t)-1 ? -1 : 0;
1374	#else
1375	strcpy (tmpbuf->ptr, wd);
1376	#endif
1377	return tmpbuf->ptr;
1378	}	962	}
1379		963
1380	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */	964	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1381	static int	965	static int
1382	eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)	966	eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1383	{	967	{
		968	char *res;
1384	const char *rel = path;	969	const char *rel = path;
1385	char *res;
1386	char *tmp1, *tmp2;	970	char *tmp1, *tmp2;
1387	#if SYMLOOP_MAX > 32	971	#if SYMLOOP_MAX > 32
1388	int symlinks = SYMLOOP_MAX;	972	int symlinks = SYMLOOP_MAX;
1389	#else	973	#else
1390	int symlinks = 32;	974	int symlinks = 32;
1391	#endif	975	#endif
1392		976
1393	/*D*/ /*TODO: wd ignored */
1394
1395	errno = EINVAL;	977	errno = EINVAL;
1396	if (!rel)	978	if (!rel)
1397	return -1;	979	return -1;
1398		980
1399	errno = ENOENT;	981	errno = ENOENT;
1400	if (!*rel)	982	if (!*rel)
1401	return -1;	983	return -1;
1402		984
1403	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);	985	res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
		986	#ifdef _WIN32
		987	if (_access (rel, 4) != 0)
		988	return -1;
		989
		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
1404	tmp1 = res + PATH_MAX;	1003	tmp1 = res + EIO_PATH_MAX;
1405	tmp2 = tmp1 + PATH_MAX;	1004	tmp2 = tmp1 + EIO_PATH_MAX;
1406		1005
1407	#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 */
1408	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1007	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1409	/* on linux we may be able to ask the kernel */	1008	/* on linux we may be able to ask the kernel */
1410	{	1009	{
1411	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);
1412		1011
1413	if (fd >= 0)	1012	if (fd >= 0)
1414	{	1013	{
1415	sprintf (tmp1, "/proc/self/fd/%d", fd);	1014	sprintf (tmp1, "/proc/self/fd/%d", fd);
1416	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 */
1417	close (fd);	1017	close (fd);
1418
1419	/* here we should probably stat the open file and the disk file, to make sure they still match */
1420		1018
1421	if (req->result > 0)	1019	if (req->result > 0)
1422	goto done;	1020	goto done;
1423	}	1021	}
1424	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)
1425	return;	1023	return -1;
1426	}	1024	}
1427	#endif	1025	#endif
1428	#endif	1026	#endif
1429		1027
1430	if (*rel != '/')	1028	if (*rel != '/')
1431	{	1029	{
1432	if (!eio__getwd (tmpbuf, wd))	1030	int len;
		1031
		1032	errno = ENOENT;
		1033	if (wd == EIO_INVALID_WD)
1433	return -1;	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);
1434		1045
1435	if (res [1]) /* only use if not / */	1046	if (res [1]) /* only use if not / */
1436	res += strlen (res);	1047	res += len;
1437	}	1048	}
1438		1049
1439	while (*rel)	1050	while (*rel)
1440	{	1051	{
1441	eio_ssize_t len, linklen;	1052	eio_ssize_t len, linklen;
…		…
1469	}	1080	}
1470	}	1081	}
1471		1082
1472	errno = ENAMETOOLONG;	1083	errno = ENAMETOOLONG;
1473	if (res + 1 + len + 1 >= tmp1)	1084	if (res + 1 + len + 1 >= tmp1)
1474	return;	1085	return -1;
1475		1086
1476	/* copy one component */	1087	/* copy one component */
1477	*res = '/';	1088	*res = '/';
1478	memcpy (res + 1, beg, len);	1089	memcpy (res + 1, beg, len);
1479		1090
1480	/* zero-terminate, for readlink */	1091	/* zero-terminate, for readlink */
1481	res [len + 1] = 0;	1092	res [len + 1] = 0;
1482		1093
1483	/* now check if it's a symlink */	1094	/* now check if it's a symlink */
1484	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);	1095	linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1485		1096
1486	if (linklen < 0)	1097	if (linklen < 0)
1487	{	1098	{
1488	if (errno != EINVAL)	1099	if (errno != EINVAL)
1489	return -1;	1100	return -1;
…		…
1495	{	1106	{
1496	/* yay, it was a symlink - build new path in tmp2 */	1107	/* yay, it was a symlink - build new path in tmp2 */
1497	int rellen = strlen (rel);	1108	int rellen = strlen (rel);
1498		1109
1499	errno = ENAMETOOLONG;	1110	errno = ENAMETOOLONG;
1500	if (linklen + 1 + rellen >= PATH_MAX)	1111	if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1501	return -1;	1112	return -1;
1502		1113
1503	errno = ELOOP;	1114	errno = ELOOP;
1504	if (!--symlinks)	1115	if (!--symlinks)
1505	return -1;	1116	return -1;
…		…
1519	/* special case for the lone root path */	1130	/* special case for the lone root path */
1520	if (res == tmpbuf->ptr)	1131	if (res == tmpbuf->ptr)
1521	*res++ = '/';	1132	*res++ = '/';
1522		1133
1523	return res - (char *)tmpbuf->ptr;	1134	return res - (char *)tmpbuf->ptr;
		1135	#endif
1524	}	1136	}
1525		1137
1526	static signed char	1138	static signed char
1527	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1139	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1528	{	1140	{
…		…
1688	eio_dent_insertion_sort (dents, size);	1300	eio_dent_insertion_sort (dents, size);
1689	}	1301	}
1690		1302
1691	/* read a full directory */	1303	/* read a full directory */
1692	static void	1304	static void
1693	eio__scandir (eio_req *req)	1305	eio__scandir (eio_req *req, etp_worker *self)
1694	{	1306	{
1695	char *name, *names;	1307	char *name, *names;
1696	int namesalloc = 4096 - sizeof (void *) * 4;	1308	int namesalloc = 4096 - sizeof (void *) * 4;
1697	int namesoffs = 0;	1309	int namesoffs = 0;
1698	int flags = req->int1;	1310	int flags = req->int1;
…		…
1716	#ifdef _WIN32	1328	#ifdef _WIN32
1717	{	1329	{
1718	int len = strlen ((const char *)req->ptr1);	1330	int len = strlen ((const char *)req->ptr1);
1719	char *path = malloc (MAX_PATH);	1331	char *path = malloc (MAX_PATH);
1720	const char *fmt;	1332	const char *fmt;
		1333	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1721		1334
1722	if (!len)	1335	if (!len)
1723	fmt = "./*";	1336	fmt = "./*";
1724	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1337	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1725	fmt = "%s*";	1338	fmt = "%s*";
1726	else	1339	else
1727	fmt = "%s/*";	1340	fmt = "%s/*";
1728		1341
1729	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1342	_snprintf (path, MAX_PATH, fmt, reqpath);
1730	dirp = FindFirstFile (path, &entp);	1343	dirp = FindFirstFile (path, &entp);
1731	free (path);	1344	free (path);
1732		1345
1733	if (dirp == INVALID_HANDLE_VALUE)	1346	if (dirp == INVALID_HANDLE_VALUE)
1734	{	1347	{
…		…
1756		1369
1757	return;	1370	return;
1758	}	1371	}
1759	}	1372	}
1760	#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
1761	dirp = opendir (req->ptr1);	1388	dirp = opendir (req->ptr1);
		1389	#else
		1390	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1391	#endif
1762		1392
1763	if (!dirp)	1393	if (!dirp)
1764	return;	1394	return;
1765	#endif	1395	#endif
1766		1396
…		…
1883	#ifdef DT_FIFO	1513	#ifdef DT_FIFO
1884	case DT_FIFO: ent->type = EIO_DT_FIFO; break;	1514	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1885	#endif	1515	#endif
1886	#ifdef DT_CHR	1516	#ifdef DT_CHR
1887	case DT_CHR: ent->type = EIO_DT_CHR; break;	1517	case DT_CHR: ent->type = EIO_DT_CHR; break;
1888	#endif	1518	#endif
1889	#ifdef DT_MPC	1519	#ifdef DT_MPC
1890	case DT_MPC: ent->type = EIO_DT_MPC; break;	1520	case DT_MPC: ent->type = EIO_DT_MPC; break;
1891	#endif	1521	#endif
1892	#ifdef DT_DIR	1522	#ifdef DT_DIR
1893	case DT_DIR: ent->type = EIO_DT_DIR; break;	1523	case DT_DIR: ent->type = EIO_DT_DIR; break;
1894	#endif	1524	#endif
1895	#ifdef DT_NAM	1525	#ifdef DT_NAM
1896	case DT_NAM: ent->type = EIO_DT_NAM; break;	1526	case DT_NAM: ent->type = EIO_DT_NAM; break;
1897	#endif	1527	#endif
1898	#ifdef DT_BLK	1528	#ifdef DT_BLK
1899	case DT_BLK: ent->type = EIO_DT_BLK; break;	1529	case DT_BLK: ent->type = EIO_DT_BLK; break;
1900	#endif	1530	#endif
1901	#ifdef DT_MPB	1531	#ifdef DT_MPB
1902	case DT_MPB: ent->type = EIO_DT_MPB; break;	1532	case DT_MPB: ent->type = EIO_DT_MPB; break;
1903	#endif	1533	#endif
1904	#ifdef DT_REG	1534	#ifdef DT_REG
1905	case DT_REG: ent->type = EIO_DT_REG; break;	1535	case DT_REG: ent->type = EIO_DT_REG; break;
1906	#endif	1536	#endif
1907	#ifdef DT_NWK	1537	#ifdef DT_NWK
1908	case DT_NWK: ent->type = EIO_DT_NWK; break;	1538	case DT_NWK: ent->type = EIO_DT_NWK; break;
1909	#endif	1539	#endif
1910	#ifdef DT_CMP	1540	#ifdef DT_CMP
1911	case DT_CMP: ent->type = EIO_DT_CMP; break;	1541	case DT_CMP: ent->type = EIO_DT_CMP; break;
1912	#endif	1542	#endif
1913	#ifdef DT_LNK	1543	#ifdef DT_LNK
1914	case DT_LNK: ent->type = EIO_DT_LNK; break;	1544	case DT_LNK: ent->type = EIO_DT_LNK; break;
1915	#endif	1545	#endif
1916	#ifdef DT_SOCK	1546	#ifdef DT_SOCK
1917	case DT_SOCK: ent->type = EIO_DT_SOCK; break;	1547	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
…		…
1930	{	1560	{
1931	if (ent->type == EIO_DT_UNKNOWN)	1561	if (ent->type == EIO_DT_UNKNOWN)
1932	{	1562	{
1933	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 */
1934	ent->score = 1;	1564	ent->score = 1;
1935	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */	1565	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1936	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 */
1937	}	1567	}
1938	else if (ent->type == EIO_DT_DIR)	1568	else if (ent->type == EIO_DT_DIR)
1939	ent->score = 0;	1569	ent->score = 0;
1940	}	1570	}
…		…
1960	}	1590	}
1961	}	1591	}
1962		1592
1963	/*****************************************************************************/	1593	/*****************************************************************************/
1964	/* working directory stuff */	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;
1965		1637
1966	#if HAVE_AT	1638	#if HAVE_AT
		1639	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
1967		1640
1968	#define WD2FD(wd) ((wd) ? ((int)(long)(wd)) - 1 : AT_FDCWD)	1641	if (fd < 0)
1969		1642	return EIO_INVALID_WD;
1970	#ifndef O_SEARCH
1971	# define O_SEARCH O_RDONLY
1972	#endif	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	}
1973		1657
1974	eio_wd	1658	eio_wd
1975	eio_wd_open_sync (eio_wd wd, const char *path)	1659	eio_wd_open_sync (eio_wd wd, const char *path)
1976	{	1660	{
1977	int fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);	1661	struct etp_tmpbuf tmpbuf = { };
1978
1979	return fd >= 0 ? (eio_wd)(long)(fd + 1) : EIO_INVALID_WD;
1980	}
1981
1982	static eio_wd
1983	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
1984	{
1985	return eio_wd_open_sync (wd, path);	1662	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		1663	free (tmpbuf.ptr);
		1664
		1665	return wd;
1986	}	1666	}
1987		1667
1988	void	1668	void
1989	eio_wd_close_sync (eio_wd wd)	1669	eio_wd_close_sync (eio_wd wd)
1990	{	1670	{
1991	int fd = WD2FD (wd);	1671	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
1992		1672	{
1993	if (fd >= 0)	1673	#if HAVE_AT
1994	close (fd);	1674	close (wd->fd);
		1675	#endif
		1676	free (wd);
		1677	}
1995	}	1678	}
		1679
		1680	#if HAVE_AT
		1681
		1682	/* they forgot these */
1996		1683
1997	static int	1684	static int
1998	eio__truncateat (int dirfd, const char *path, off_t length)	1685	eio__truncateat (int dirfd, const char *path, off_t length)
1999	{	1686	{
2000	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);	1687	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
…		…
2021	close (fd);	1708	close (fd);
2022	return res;	1709	return res;
2023		1710
2024	}	1711	}
2025		1712
2026	#else
2027
2028	/* on legacy systems, we represent the working directories simply by their path strings */
2029
2030	static const char *
2031	wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
2032	{
2033	if (!wd || *path == '/')
2034	return path;
2035
2036	{
2037	int l1 = strlen ((const char *)wd);
2038	int l2 = strlen (path);
2039
2040	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
2041
2042	memcpy (res, wd, l1);
2043	res [l1] = '/';
2044	memcpy (res + l1 + 1, path, l2 + 1);
2045
2046	return res;
2047	}
2048	}
2049
2050	static eio_wd
2051	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
2052	{
2053	if (*path == '/') /* absolute paths ignore wd */
2054	path = strdup (path);
2055	else if (path [0] == '.' && !path [1]) /* special case '.', as it is common */
2056	return wd;
2057	else
2058	{
2059	int len = eio__realpath (tmpbuf, wd, path);
2060
2061	path = EIO_INVALID_WD;
2062
2063	if (len >= 0)
2064	{
2065	((char *)tmpbuf->ptr)[len] = 0;
2066	path = strdup (tmpbuf->ptr);
2067	}
2068	}
2069
2070	if (!path)
2071	path = EIO_INVALID_WD;
2072
2073	return (eio_wd)path;
2074	}
2075
2076	eio_wd
2077	eio_wd_open_sync (eio_wd wd, const char *path)
2078	{
2079	struct tmpbuf tmpbuf = { 0 };
2080	wd = eio__wd_open_sync (&tmpbuf, wd, path);
2081	free (tmpbuf.ptr);
2082
2083	return wd;
2084	}
2085
2086	void
2087	eio_wd_close_sync (eio_wd wd)
2088	{
2089	if (wd != EIO_INVALID_WD)
2090	free (wd);
2091	}
2092
2093	#endif	1713	#endif
2094		1714
2095	/*****************************************************************************/	1715	/*****************************************************************************/
2096		1716
2097	#define ALLOC(len) \	1717	#define ALLOC(len) \
2098	if (!req->ptr2) \	1718	if (!req->ptr2) \
2099	{ \	1719	{ \
2100	X_LOCK (wrklock); \	1720	X_LOCK (EIO_POOL->wrklock); \
2101	req->flags |= EIO_FLAG_PTR2_FREE; \	1721	req->flags |= EIO_FLAG_PTR2_FREE; \
2102	X_UNLOCK (wrklock); \	1722	X_UNLOCK (EIO_POOL->wrklock); \
2103	req->ptr2 = malloc (len); \	1723	req->ptr2 = malloc (len); \
2104	if (!req->ptr2) \	1724	if (!req->ptr2) \
2105	{ \	1725	{ \
2106	errno = ENOMEM; \	1726	errno = ENOMEM; \
2107	req->result = -1; \	1727	req->result = -1; \
2108	break; \	1728	break; \
2109	} \	1729	} \
2110	}	1730	}
2111		1731
2112	X_THREAD_PROC (etp_proc)
2113	{
2114	ETP_REQ *req;
2115	struct timespec ts;
2116	etp_worker *self = (etp_worker *)thr_arg;
2117
2118	#if HAVE_PRCTL_SET_NAME
2119	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
2120	#endif
2121
2122	/* try to distribute timeouts somewhat evenly */
2123	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
2124
2125	for (;;)
2126	{
2127	ts.tv_sec = 0;
2128
2129	X_LOCK (reqlock);
2130
2131	for (;;)
2132	{
2133	req = reqq_shift (&req_queue);
2134
2135	if (req)
2136	break;
2137
2138	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2139	{
2140	X_UNLOCK (reqlock);
2141	X_LOCK (wrklock);
2142	--started;
2143	X_UNLOCK (wrklock);
2144	goto quit;
2145	}
2146
2147	++idle;
2148
2149	if (idle <= max_idle)
2150	/* we are allowed to idle, so do so without any timeout */
2151	X_COND_WAIT (reqwait, reqlock);
2152	else
2153	{
2154	/* initialise timeout once */
2155	if (!ts.tv_sec)
2156	ts.tv_sec = time (0) + idle_timeout;
2157
2158	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2159	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
2160	}
2161
2162	--idle;
2163	}
2164
2165	--nready;
2166
2167	X_UNLOCK (reqlock);
2168
2169	if (req->type < 0)
2170	goto quit;
2171
2172	ETP_EXECUTE (self, req);
2173
2174	X_LOCK (reslock);
2175
2176	++npending;
2177
2178	if (!reqq_push (&res_queue, req) && want_poll_cb)
2179	want_poll_cb ();
2180
2181	etp_worker_clear (self);
2182
2183	X_UNLOCK (reslock);
2184	}
2185
2186	quit:
2187	free (req);
2188
2189	X_LOCK (wrklock);
2190	etp_worker_free (self);
2191	X_UNLOCK (wrklock);
2192
2193	return 0;
2194	}
2195
2196	/*****************************************************************************/	1732	/*****************************************************************************/
2197		1733
2198	int ecb_cold	1734	int ecb_cold
2199	eio_init (void (*want_poll)(void), void (*done_poll)(void))	1735	eio_init (void (*want_poll)(void), void (*done_poll)(void))
2200	{	1736	{
2201	#if !HAVE_PREADWRITE	1737	eio_want_poll_cb = want_poll;
2202	X_MUTEX_CREATE (preadwritelock);	1738	eio_done_poll_cb = done_poll;
2203	#endif
2204		1739
2205	return etp_init (want_poll, done_poll);	1740	return etp_init (EIO_POOL, 0, 0, 0);
2206	}	1741	}
2207		1742
2208	ecb_inline void	1743	ecb_inline void
2209	eio_api_destroy (eio_req *req)	1744	eio_api_destroy (eio_req *req)
2210	{	1745	{
2211	free (req);	1746	free (req);
2212	}	1747	}
2213		1748
2214	#define REQ(rtype) \	1749	#define REQ(rtype) \
2215	eio_req *req; \	1750	eio_req *req; \
2216	\	1751	\
2217	req = (eio_req *)calloc (1, sizeof *req); \	1752	req = (eio_req *)calloc (1, sizeof *req); \
2218	if (!req) \	1753	if (!req) \
2219	return 0; \	1754	return 0; \
…		…
2233	{ \	1768	{ \
2234	eio_api_destroy (req); \	1769	eio_api_destroy (req); \
2235	return 0; \	1770	return 0; \
2236	}	1771	}
2237		1772
		1773	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		1774
2238	static void	1775	static void
2239	eio_execute (etp_worker *self, eio_req *req)	1776	eio_execute (etp_worker *self, eio_req *req)
2240	{	1777	{
2241	#if HAVE_AT	1778	#if HAVE_AT
2242	int dirfd;	1779	int dirfd;
…		…
2270	switch (req->type)	1807	switch (req->type)
2271	{	1808	{
2272	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);	1809	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
2273	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;	1810	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
2274	break;	1811	break;
		1812	case EIO_WD_CLOSE: req->result = 0;
		1813	eio_wd_close_sync (req->wd); break;
		1814
2275	case EIO_WD_CLOSE: eio_wd_close_sync (req->wd); break;	1815	case EIO_SEEK: eio__lseek (req); break;
2276
2277	case EIO_READ: ALLOC (req->size);	1816	case EIO_READ: ALLOC (req->size);
2278	req->result = req->offs >= 0	1817	req->result = req->offs >= 0
2279	? pread (req->int1, req->ptr2, req->size, req->offs)	1818	? pread (req->int1, req->ptr2, req->size, req->offs)
2280	: read (req->int1, req->ptr2, req->size); break;	1819	: read (req->int1, req->ptr2, req->size); break;
2281	case EIO_WRITE: req->result = req->offs >= 0	1820	case EIO_WRITE: req->result = req->offs >= 0
2282	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1821	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2283	: write (req->int1, req->ptr2, req->size); break;	1822	: write (req->int1, req->ptr2, req->size); break;
2284		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
2285	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;
2286	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;
2287		1829
2288	#if HAVE_AT	1830	#if HAVE_AT
		1831
2289	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1832	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2290	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;	1833	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2291	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1834	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2292	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;	1835	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
2293	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;	1836	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
2294	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;	1837	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
2295	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;	1838	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
2296	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;	1839	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
2297		1840
2298	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;	1841	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
2299	case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); 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;
2300	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;	1846	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
2301	case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD (req->int3), req->ptr2); 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;
2302	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD (req->int3), req->ptr2, 0); break;	1851	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
2303	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;	1852	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
2304	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;	1853	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2305	case EIO_READLINK: ALLOC (PATH_MAX);
2306	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
2307	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1854	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2308	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	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
2309	#else	1888	#else
		1889
2310	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1890	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2311	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	1891	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2312	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1892	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2313	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	1893	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2314	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;	1894	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
…		…
2321	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;	1901	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2322	case EIO_RENAME: req->result = rename (path , req->ptr2); break;	1902	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
2323	case EIO_LINK: req->result = link (path , req->ptr2); break;	1903	case EIO_LINK: req->result = link (path , req->ptr2); break;
2324	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;	1904	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2325	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;	1905	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2326	case EIO_READLINK: ALLOC (PATH_MAX);
2327	req->result = readlink (path, req->ptr2, PATH_MAX); break;
2328	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1906	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2329	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;	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
2330	#endif	1941	#endif
2331		1942
2332	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))	1943	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2333	{	1944	{
2334	ALLOC (req->result);	1945	ALLOC (req->result);
…		…
2357	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	1968	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2358	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	1969	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2359	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	1970	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2360	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	1971	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2361		1972
2362	case EIO_READDIR: eio__scandir (req); break;	1973	case EIO_READDIR: eio__scandir (req, self); break;
2363		1974
2364	case EIO_BUSY:	1975	case EIO_BUSY:
2365	#ifdef _WIN32	1976	#ifdef _WIN32
2366	Sleep (req->nv1 * 1e3);	1977	Sleep (req->nv1 * 1e3);
2367	#else	1978	#else
…		…
2374	req->result = select (0, 0, 0, 0, &tv);	1985	req->result = select (0, 0, 0, 0, &tv);
2375	}	1986	}
2376	#endif	1987	#endif
2377	break;	1988	break;
2378		1989
2379	case EIO_UTIME:	1990	#if 0
2380	case EIO_FUTIME:
2381	{
2382	struct timeval tv[2];
2383	struct timeval *times;
2384
2385	if (req->nv1 != -1. || req->nv2 != -1.)
2386	{
2387	tv[0].tv_sec = req->nv1;
2388	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2389	tv[1].tv_sec = req->nv2;
2390	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2391
2392	times = tv;
2393	}
2394	else
2395	times = 0;
2396
2397	req->result = req->type == EIO_FUTIME
2398	? futimes (req->int1, times)
2399	: utimes (req->ptr1, times);
2400	}
2401	break;
2402
2403	case EIO_GROUP:	1991	case EIO_GROUP:
2404	abort (); /* handled in eio_request */	1992	abort (); /* handled in eio_request */
		1993	#endif
2405		1994
2406	case EIO_NOP:	1995	case EIO_NOP:
2407	req->result = 0;	1996	req->result = 0;
2408	break;	1997	break;
2409		1998
2410	case EIO_CUSTOM:	1999	case EIO_CUSTOM:
2411	req->feed (req);	2000	req->feed (req);
2412	break;	2001	break;
2413		2002
2414	default:	2003	default:
2415	errno = ENOSYS;
2416	req->result = -1;	2004	req->result = EIO_ENOSYS ();
2417	break;	2005	break;
2418	}	2006	}
2419		2007
2420	req->errorno = errno;	2008	req->errorno = errno;
2421	}	2009	}
2422		2010
2423	#ifndef EIO_NO_WRAPPERS	2011	#ifndef EIO_NO_WRAPPERS
2424		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
2425	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2023	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2426	{	2024	{
2427	REQ (EIO_NOP); SEND;	2025	REQ (EIO_NOP); SEND;
2428	}	2026	}
2429		2027
…		…
2490	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)
2491	{	2089	{
2492	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;
2493	}	2091	}
2494		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
2495	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)
2496	{	2099	{
2497	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;
2498	}	2101	}
2499		2102
2500	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)
2501	{	2104	{
2502	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;
2503	}	2116	}
2504		2117
2505	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)
2506	{	2119	{
2507	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2120	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2695	void	2308	void
2696	eio_grp_add (eio_req *grp, eio_req *req)	2309	eio_grp_add (eio_req *grp, eio_req *req)
2697	{	2310	{
2698	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));
2699		2312
2700	grp->flags |= EIO_FLAG_GROUPADD;	2313	grp->flags |= ETP_FLAG_GROUPADD;
2701		2314
2702	++grp->size;	2315	++grp->size;
2703	req->grp = grp;	2316	req->grp = grp;
2704		2317
2705	req->grp_prev = 0;	2318	req->grp_prev = 0;

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