[ViewVC] Diff of: cvs/libeio/eio.c

Comparing libeio/eio.c (file contents):
Revision 1.120 by root, Tue Apr 24 18:47:50 2012 UTC vs.
Revision 1.161 by root, Fri Feb 16 21:20:52 2024 UTC

…		…
1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018,2019 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	};
…		…
194	#define D_NAME(entp) entp.cFileName	231	#define D_NAME(entp) entp.cFileName
195	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)	232	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
196		233
197	#else	234	#else
198		235
		236	#include <sys/ioctl.h>
199	#include <sys/time.h>	237	#include <sys/time.h>
200	#include <sys/select.h>	238	#include <sys/select.h>
201	#include <sys/statvfs.h>
202	#include <unistd.h>	239	#include <unistd.h>
203	#include <signal.h>	240	#include <signal.h>
204	#include <dirent.h>	241	#include <dirent.h>
		242
		243	#ifdef ANDROID
		244	#include <sys/vfs.h>
		245	#define statvfs statfs
		246	#define fstatvfs fstatfs
		247	#include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
		248	#else
		249	#include <sys/statvfs.h>
		250	#endif
205		251
206	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES	252	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
207	#include <sys/mman.h>	253	#include <sys/mman.h>
208	#endif	254	#endif
209		255
…		…
237	# include <utime.h>	283	# include <utime.h>
238	#endif	284	#endif
239		285
240	#if HAVE_SYS_SYSCALL_H	286	#if HAVE_SYS_SYSCALL_H
241	# include <sys/syscall.h>	287	# include <sys/syscall.h>
242	#endif
243
244	#if HAVE_SYS_PRCTL_H
245	# include <sys/prctl.h>
246	#endif	288	#endif
247		289
248	#if HAVE_SENDFILE	290	#if HAVE_SENDFILE
249	# if __linux	291	# if __linux
250	# include <sys/sendfile.h>	292	# include <sys/sendfile.h>
…		…
258	# else	300	# else
259	# error sendfile support requested but not available	301	# error sendfile support requested but not available
260	# endif	302	# endif
261	#endif	303	#endif
262		304
		305	#if HAVE_RENAMEAT2
		306	# include <sys/syscall.h>
		307	# include <linux/fs.h>
		308	#endif
		309
263	#ifndef D_TYPE	310	#ifndef D_TYPE
264	# define D_TYPE(de) 0	311	# define D_TYPE(de) 0
265	#endif	312	#endif
266	#ifndef D_INO	313	#ifndef D_INO
267	# define D_INO(de) 0	314	# define D_INO(de) 0
…		…
275	# define NAME_MAX 4096	322	# define NAME_MAX 4096
276	#endif	323	#endif
277		324
278	/* used for readlink etc. */	325	/* used for readlink etc. */
279	#ifndef PATH_MAX	326	#ifndef PATH_MAX
280	# define PATH_MAX 4096	327	# define PATH_MAX 0
281	#endif	328	#endif
		329
		330	#ifndef O_CLOEXEC
		331	#define O_CLOEXEC 0
		332	#endif
		333
		334	#ifndef O_NONBLOCK
		335	#define O_NONBLOCK 0
		336	#endif
		337
		338	#ifndef O_SEARCH
		339	#define O_SEARCH O_RDONLY
		340	#endif
		341
		342	#ifndef O_DIRECTORY
		343	#define O_DIRECTORY 0
		344	#endif
		345
		346	#ifndef EIO_PATH_MIN
		347	# define EIO_PATH_MIN 8160
		348	#endif
		349
		350	#if defined(O_PATH)
		351	# define EIO_O_PATH O_PATH
		352	#elif defined(O_SEARCH)
		353	# define EIO_O_PATH O_SEARCH
		354	#else
		355	# define EIO_O_PATH 0
		356	#endif
		357
		358	#define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX)
282		359
283	/* buffer size for various temporary buffers */	360	/* buffer size for various temporary buffers */
284	#define EIO_BUFSIZE 65536	361	#define EIO_BUFSIZE 65536
285		362
286	#define dBUF \	363	#define dBUF \
287	char *eio_buf = malloc (EIO_BUFSIZE); \	364	char *eio_buf = malloc (EIO_BUFSIZE); \
288	errno = ENOMEM; \	365	errno = ENOMEM; \
289	if (!eio_buf) \	366	if (!eio_buf) \
290	return -1	367	return -1
291		368
292	#define FUBd \	369	#define FUBd \
293	free (eio_buf)	370	free (eio_buf)
294		371
295	#define EIO_TICKS ((1000000 + 1023) >> 10)
296
297	/*****************************************************************************/	372	/*****************************************************************************/
298		373
299	struct tmpbuf
300	{
301	void *ptr;
302	int len;
303	};
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
317	struct tmpbuf;	374	struct etp_tmpbuf;
318		375
319	#if _POSIX_VERSION >= 200809L	376	#if _POSIX_VERSION >= 200809L
320	#define HAVE_AT 1	377	#define HAVE_AT 1
321	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)	378	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
322	#ifndef O_SEARCH
323	#define O_SEARCH O_RDONLY
324	#endif
325	#else	379	#else
326	#define HAVE_AT 0	380	#define HAVE_AT 0
327	static const char wd_expand (struct tmpbuf tmpbuf, eio_wd wd, const char *path);	381	static const char wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char *path);
328	#endif	382	#endif
329		383
330	struct eio_pwd	384	struct eio_pwd
331	{	385	{
332	#if HAVE_AT	386	#if HAVE_AT
…		…
339	/*****************************************************************************/	393	/*****************************************************************************/
340		394
341	#define ETP_PRI_MIN EIO_PRI_MIN	395	#define ETP_PRI_MIN EIO_PRI_MIN
342	#define ETP_PRI_MAX EIO_PRI_MAX	396	#define ETP_PRI_MAX EIO_PRI_MAX
343		397
		398	#define ETP_TYPE_QUIT -1
		399	#define ETP_TYPE_GROUP EIO_GROUP
		400
		401	static void eio_nop_callback (void) { }
		402	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		403	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		404
		405	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		406	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		407
344	struct etp_worker;	408	struct etp_worker;
345
346	#define ETP_REQ eio_req	409	#define ETP_REQ eio_req
347	#define ETP_DESTROY(req) eio_destroy (req)	410	#define ETP_DESTROY(req) eio_destroy (req)
348	static int eio_finish (eio_req *req);	411	static int eio_finish (eio_req *req);
349	#define ETP_FINISH(req) eio_finish (req)	412	#define ETP_FINISH(req) eio_finish (req)
350	static void eio_execute (struct etp_worker self, eio_req req);	413	static void eio_execute (struct etp_worker self, eio_req req);
351	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	414	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
352		415
353	/*****************************************************************************/	416	#include "etp.c"
354		417
355	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	418	static struct etp_pool eio_pool;
356		419	#define EIO_POOL (&eio_pool)
357	/* calculate time difference in ~1/EIO_TICKS of a second */
358	ecb_inline int
359	tvdiff (struct timeval tv1, struct timeval tv2)
360	{
361	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
362	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
363	}
364
365	static unsigned int started, idle, wanted = 4;
366
367	static void (*want_poll_cb) (void);
368	static void (*done_poll_cb) (void);
369
370	static unsigned int max_poll_time; /* reslock */
371	static unsigned int max_poll_reqs; /* reslock */
372
373	static unsigned int nreqs; /* reqlock */
374	static unsigned int nready; /* reqlock */
375	static unsigned int npending; /* reqlock */
376	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
377	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
378
379	static xmutex_t wrklock;
380	static xmutex_t reslock;
381	static xmutex_t reqlock;
382	static xcond_t reqwait;
383
384	#if !HAVE_PREADWRITE
385	/*
386	* make our pread/pwrite emulation safe against themselves, but not against
387	* normal read/write by using a mutex. slows down execution a lot,
388	* but that's your problem, not mine.
389	*/
390	static xmutex_t preadwritelock;
391	#endif
392
393	typedef struct etp_worker
394	{
395	struct tmpbuf tmpbuf;
396
397	/* locked by wrklock */
398	struct etp_worker prev, next;
399
400	xthread_t tid;
401
402	#ifdef ETP_WORKER_COMMON
403	ETP_WORKER_COMMON
404	#endif
405	} etp_worker;
406
407	static etp_worker wrk_first; /* NOT etp */
408
409	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
410	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
411
412	/* worker threads management */
413
414	static void
415	etp_worker_clear (etp_worker *wrk)
416	{
417	}
418
419	static void ecb_cold
420	etp_worker_free (etp_worker *wrk)
421	{
422	free (wrk->tmpbuf.ptr);
423
424	wrk->next->prev = wrk->prev;
425	wrk->prev->next = wrk->next;
426
427	free (wrk);
428	}
429
430	static unsigned int
431	etp_nreqs (void)
432	{
433	int retval;
434	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
435	retval = nreqs;
436	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
437	return retval;
438	}
439
440	static unsigned int
441	etp_nready (void)
442	{
443	unsigned int retval;
444
445	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
446	retval = nready;
447	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
448
449	return retval;
450	}
451
452	static unsigned int
453	etp_npending (void)
454	{
455	unsigned int retval;
456
457	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
458	retval = npending;
459	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
460
461	return retval;
462	}
463
464	static unsigned int
465	etp_nthreads (void)
466	{
467	unsigned int retval;
468
469	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
470	retval = started;
471	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
472
473	return retval;
474	}
475
476	/*
477	* a somewhat faster data structure might be nice, but
478	* with 8 priorities this actually needs <20 insns
479	* per shift, the most expensive operation.
480	*/
481	typedef struct {
482	ETP_REQ qs[ETP_NUM_PRI], qe[ETP_NUM_PRI]; /* qstart, qend */
483	int size;
484	} etp_reqq;
485
486	static etp_reqq req_queue;
487	static etp_reqq res_queue;
488
489	static void ecb_noinline ecb_cold
490	reqq_init (etp_reqq *q)
491	{
492	int pri;
493
494	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
495	q->qs[pri] = q->qe[pri] = 0;
496
497	q->size = 0;
498	}
499
500	static int ecb_noinline
501	reqq_push (etp_reqq q, ETP_REQ req)
502	{
503	int pri = req->pri;
504	req->next = 0;
505
506	if (q->qe[pri])
507	{
508	q->qe[pri]->next = req;
509	q->qe[pri] = req;
510	}
511	else
512	q->qe[pri] = q->qs[pri] = req;
513
514	return q->size++;
515	}
516
517	static ETP_REQ * ecb_noinline
518	reqq_shift (etp_reqq *q)
519	{
520	int pri;
521
522	if (!q->size)
523	return 0;
524
525	--q->size;
526
527	for (pri = ETP_NUM_PRI; pri--; )
528	{
529	eio_req *req = q->qs[pri];
530
531	if (req)
532	{
533	if (!(q->qs[pri] = (eio_req *)req->next))
534	q->qe[pri] = 0;
535
536	return req;
537	}
538	}
539
540	abort ();
541	}
542
543	static int ecb_cold
544	etp_init (void (want_poll)(void), void (done_poll)(void))
545	{
546	X_MUTEX_CREATE (wrklock);
547	X_MUTEX_CREATE (reslock);
548	X_MUTEX_CREATE (reqlock);
549	X_COND_CREATE (reqwait);
550
551	reqq_init (&req_queue);
552	reqq_init (&res_queue);
553
554	wrk_first.next =
555	wrk_first.prev = &wrk_first;
556
557	started = 0;
558	idle = 0;
559	nreqs = 0;
560	nready = 0;
561	npending = 0;
562
563	want_poll_cb = want_poll;
564	done_poll_cb = done_poll;
565
566	return 0;
567	}
568
569	X_THREAD_PROC (etp_proc);
570
571	static void ecb_cold
572	etp_start_thread (void)
573	{
574	etp_worker *wrk = calloc (1, sizeof (etp_worker));
575
576	/TODO/
577	assert (("unable to allocate worker thread data", wrk));
578
579	X_LOCK (wrklock);
580
581	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
582	{
583	wrk->prev = &wrk_first;
584	wrk->next = wrk_first.next;
585	wrk_first.next->prev = wrk;
586	wrk_first.next = wrk;
587	++started;
588	}
589	else
590	free (wrk);
591
592	X_UNLOCK (wrklock);
593	}
594
595	static void
596	etp_maybe_start_thread (void)
597	{
598	if (ecb_expect_true (etp_nthreads () >= wanted))
599	return;
600
601	/* todo: maybe use idle here, but might be less exact */
602	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
603	return;
604
605	etp_start_thread ();
606	}
607
608	static void ecb_cold
609	etp_end_thread (void)
610	{
611	eio_req req = calloc (1, sizeof (eio_req)); / will be freed by worker */
612
613	req->type = -1;
614	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
615
616	X_LOCK (reqlock);
617	reqq_push (&req_queue, req);
618	X_COND_SIGNAL (reqwait);
619	X_UNLOCK (reqlock);
620
621	X_LOCK (wrklock);
622	--started;
623	X_UNLOCK (wrklock);
624	}
625
626	static int
627	etp_poll (void)
628	{
629	unsigned int maxreqs;
630	unsigned int maxtime;
631	struct timeval tv_start, tv_now;
632
633	X_LOCK (reslock);
634	maxreqs = max_poll_reqs;
635	maxtime = max_poll_time;
636	X_UNLOCK (reslock);
637
638	if (maxtime)
639	gettimeofday (&tv_start, 0);
640
641	for (;;)
642	{
643	ETP_REQ *req;
644
645	etp_maybe_start_thread ();
646
647	X_LOCK (reslock);
648	req = reqq_shift (&res_queue);
649
650	if (req)
651	{
652	--npending;
653
654	if (!res_queue.size && done_poll_cb)
655	done_poll_cb ();
656	}
657
658	X_UNLOCK (reslock);
659
660	if (!req)
661	return 0;
662
663	X_LOCK (reqlock);
664	--nreqs;
665	X_UNLOCK (reqlock);
666
667	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
668	{
669	req->int1 = 1; /* mark request as delayed */
670	continue;
671	}
672	else
673	{
674	int res = ETP_FINISH (req);
675	if (ecb_expect_false (res))
676	return res;
677	}
678
679	if (ecb_expect_false (maxreqs && !--maxreqs))
680	break;
681
682	if (maxtime)
683	{
684	gettimeofday (&tv_now, 0);
685
686	if (tvdiff (&tv_start, &tv_now) >= maxtime)
687	break;
688	}
689	}
690
691	errno = EAGAIN;
692	return -1;
693	}
694
695	static void
696	etp_cancel (ETP_REQ *req)
697	{
698	req->cancelled = 1;
699
700	eio_grp_cancel (req);
701	}
702
703	static void
704	etp_submit (ETP_REQ *req)
705	{
706	req->pri -= ETP_PRI_MIN;
707
708	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
709	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
710
711	if (ecb_expect_false (req->type == EIO_GROUP))
712	{
713	/* I hope this is worth it :/ */
714	X_LOCK (reqlock);
715	++nreqs;
716	X_UNLOCK (reqlock);
717
718	X_LOCK (reslock);
719
720	++npending;
721
722	if (!reqq_push (&res_queue, req) && want_poll_cb)
723	want_poll_cb ();
724
725	X_UNLOCK (reslock);
726	}
727	else
728	{
729	X_LOCK (reqlock);
730	++nreqs;
731	++nready;
732	reqq_push (&req_queue, req);
733	X_COND_SIGNAL (reqwait);
734	X_UNLOCK (reqlock);
735
736	etp_maybe_start_thread ();
737	}
738	}
739
740	static void ecb_cold
741	etp_set_max_poll_time (double nseconds)
742	{
743	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
744	max_poll_time = nseconds * EIO_TICKS;
745	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
746	}
747
748	static void ecb_cold
749	etp_set_max_poll_reqs (unsigned int maxreqs)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
752	max_poll_reqs = maxreqs;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
754	}
755
756	static void ecb_cold
757	etp_set_max_idle (unsigned int nthreads)
758	{
759	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
760	max_idle = nthreads;
761	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
762	}
763
764	static void ecb_cold
765	etp_set_idle_timeout (unsigned int seconds)
766	{
767	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
768	idle_timeout = seconds;
769	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
770	}
771
772	static void ecb_cold
773	etp_set_min_parallel (unsigned int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void ecb_cold
780	etp_set_max_parallel (unsigned int nthreads)
781	{
782	if (wanted > nthreads)
783	wanted = nthreads;
784
785	while (started > wanted)
786	etp_end_thread ();
787	}
788		420
789	/*****************************************************************************/	421	/*****************************************************************************/
790		422
791	static void	423	static void
792	grp_try_feed (eio_req *grp)	424	grp_try_feed (eio_req *grp)
793	{	425	{
794	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	426	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
795	{	427	{
796	grp->flags &= ~EIO_FLAG_GROUPADD;	428	grp->flags &= ~ETP_FLAG_GROUPADD;
797		429
798	EIO_FEED (grp);	430	EIO_FEED (grp);
799		431
800	/* stop if no progress has been made */	432	/* stop if no progress has been made */
801	if (!(grp->flags & EIO_FLAG_GROUPADD))	433	if (!(grp->flags & ETP_FLAG_GROUPADD))
802	{	434	{
803	grp->feed = 0;	435	grp->feed = 0;
804	break;	436	break;
805	}	437	}
806	}	438	}
…		…
813		445
814	/* call feeder, if applicable */	446	/* call feeder, if applicable */
815	grp_try_feed (grp);	447	grp_try_feed (grp);
816		448
817	/* finish, if done */	449	/* finish, if done */
818	if (!grp->size && grp->int1)	450	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
819	return eio_finish (grp);	451	return eio_finish (grp);
820	else	452	else
821	return 0;	453	return 0;
822	}	454	}
823		455
…		…
859	}	491	}
860		492
861	void	493	void
862	eio_grp_cancel (eio_req *grp)	494	eio_grp_cancel (eio_req *grp)
863	{	495	{
864	for (grp = grp->grp_first; grp; grp = grp->grp_next)	496	etp_grp_cancel (EIO_POOL, grp);
865	eio_cancel (grp);
866	}	497	}
867		498
868	void	499	void
869	eio_cancel (eio_req *req)	500	eio_cancel (eio_req *req)
870	{	501	{
871	etp_cancel (req);	502	etp_cancel (EIO_POOL, req);
872	}	503	}
873		504
874	void	505	void
875	eio_submit (eio_req *req)	506	eio_submit (eio_req *req)
876	{	507	{
877	etp_submit (req);	508	etp_submit (EIO_POOL, req);
878	}	509	}
879		510
880	unsigned int	511	unsigned int
881	eio_nreqs (void)	512	eio_nreqs (void)
882	{	513	{
883	return etp_nreqs ();	514	return etp_nreqs (EIO_POOL);
884	}	515	}
885		516
886	unsigned int	517	unsigned int
887	eio_nready (void)	518	eio_nready (void)
888	{	519	{
889	return etp_nready ();	520	return etp_nready (EIO_POOL);
890	}	521	}
891		522
892	unsigned int	523	unsigned int
893	eio_npending (void)	524	eio_npending (void)
894	{	525	{
895	return etp_npending ();	526	return etp_npending (EIO_POOL);
896	}	527	}
897		528
898	unsigned int ecb_cold	529	unsigned int ecb_cold
899	eio_nthreads (void)	530	eio_nthreads (void)
900	{	531	{
901	return etp_nthreads ();	532	return etp_nthreads (EIO_POOL);
902	}	533	}
903		534
904	void ecb_cold	535	void ecb_cold
905	eio_set_max_poll_time (double nseconds)	536	eio_set_max_poll_time (double nseconds)
906	{	537	{
907	etp_set_max_poll_time (nseconds);	538	etp_set_max_poll_time (EIO_POOL, nseconds);
908	}	539	}
909		540
910	void ecb_cold	541	void ecb_cold
911	eio_set_max_poll_reqs (unsigned int maxreqs)	542	eio_set_max_poll_reqs (unsigned int maxreqs)
912	{	543	{
913	etp_set_max_poll_reqs (maxreqs);	544	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
914	}	545	}
915		546
916	void ecb_cold	547	void ecb_cold
917	eio_set_max_idle (unsigned int nthreads)	548	eio_set_max_idle (unsigned int nthreads)
918	{	549	{
919	etp_set_max_idle (nthreads);	550	etp_set_max_idle (EIO_POOL, nthreads);
920	}	551	}
921		552
922	void ecb_cold	553	void ecb_cold
923	eio_set_idle_timeout (unsigned int seconds)	554	eio_set_idle_timeout (unsigned int seconds)
924	{	555	{
925	etp_set_idle_timeout (seconds);	556	etp_set_idle_timeout (EIO_POOL, seconds);
926	}	557	}
927		558
928	void ecb_cold	559	void ecb_cold
929	eio_set_min_parallel (unsigned int nthreads)	560	eio_set_min_parallel (unsigned int nthreads)
930	{	561	{
931	etp_set_min_parallel (nthreads);	562	etp_set_min_parallel (EIO_POOL, nthreads);
932	}	563	}
933		564
934	void ecb_cold	565	void ecb_cold
935	eio_set_max_parallel (unsigned int nthreads)	566	eio_set_max_parallel (unsigned int nthreads)
936	{	567	{
937	etp_set_max_parallel (nthreads);	568	etp_set_max_parallel (EIO_POOL, nthreads);
938	}	569	}
939		570
940	int eio_poll (void)	571	int eio_poll (void)
941	{	572	{
942	return etp_poll ();	573	return etp_poll (EIO_POOL);
943	}	574	}
944		575
945	/*****************************************************************************/	576	/*****************************************************************************/
946	/* work around various missing functions */	577	/* work around various missing functions */
947		578
948	#if !HAVE_PREADWRITE	579	#if HAVE_POSIX_CLOSE && !__linux
949	# undef pread	580	# define eio__close(fd) posix_close (fd, 0)
950	# undef pwrite	581	#else
951	# define pread eio__pread	582	# define eio__close(fd) close (fd)
952	# define pwrite eio__pwrite
953
954	static eio_ssize_t
955	eio__pread (int fd, void *buf, size_t count, off_t offset)
956	{
957	eio_ssize_t res;
958	off_t ooffset;
959
960	X_LOCK (preadwritelock);
961	ooffset = lseek (fd, 0, SEEK_CUR);
962	lseek (fd, offset, SEEK_SET);
963	res = read (fd, buf, count);
964	lseek (fd, ooffset, SEEK_SET);
965	X_UNLOCK (preadwritelock);
966
967	return res;
968	}
969
970	static eio_ssize_t
971	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
972	{
973	eio_ssize_t res;
974	off_t ooffset;
975
976	X_LOCK (preadwritelock);
977	ooffset = lseek (fd, 0, SEEK_CUR);
978	lseek (fd, offset, SEEK_SET);
979	res = write (fd, buf, count);
980	lseek (fd, ooffset, SEEK_SET);
981	X_UNLOCK (preadwritelock);
982
983	return res;
984	}
985	#endif	583	#endif
		584
		585	/* close() without disturbing errno */
		586	static void
		587	silent_close (int fd)
		588	{
		589	int saved_errno = errno;
		590	eio__close (fd);
		591	errno = saved_errno;
		592	}
986		593
987	#ifndef HAVE_UTIMES	594	#ifndef HAVE_UTIMES
988		595
989	# undef utimes	596	# undef utimes
990	# define utimes(path,times) eio__utimes (path, times)	597	# define utimes(path,times) eio__utimes (path, times)
…		…
1303	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7	910	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1304	extern int mallopt (int, int);	911	extern int mallopt (int, int);
1305	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */	912	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1306	#endif	913	#endif
1307		914
		915	#ifndef MCL_ONFAULT
		916	if (flags & EIO_MCL_ONFAULT)
		917	return EIO_ERRNO (EINVAL, -1);
		918	#define MCL_ONFAULT 4
		919	#endif
		920
1308	if (EIO_MCL_CURRENT != MCL_CURRENT	921	if (EIO_MCL_CURRENT != MCL_CURRENT
1309	\|\| EIO_MCL_FUTURE != MCL_FUTURE)	922	\|\| EIO_MCL_FUTURE != MCL_FUTURE
		923	\|\| EIO_MCL_ONFAULT != MCL_ONFAULT)
1310	{	924	{
1311	flags = 0	925	flags = 0
1312	\| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)	926	\| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
1313	\| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);	927	\| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0)
		928	\| (flags & EIO_MCL_ONFAULT ? MCL_ONFAULT : 0)
		929	;
1314	}	930	}
1315		931
1316	return mlockall (flags);	932	return mlockall (flags);
1317	}	933	}
1318	#endif	934	#endif
…		…
1369	intptr_t end = addr + len;	985	intptr_t end = addr + len;
1370	intptr_t page = eio_pagesize ();	986	intptr_t page = eio_pagesize ();
1371		987
1372	if (addr < end)	988	if (addr < end)
1373	if (flags & EIO_MT_MODIFY) /* modify */	989	if (flags & EIO_MT_MODIFY) /* modify */
1374	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));	990	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < end && !EIO_CANCELLED (req));
1375	else	991	else
1376	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));	992	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req));
1377	}	993	}
1378		994
1379	return 0;	995	return 0;
1380	}	996	}
1381		997
…		…
1396	req->result = req->offs == (off_t)-1 ? -1 : 0;	1012	req->result = req->offs == (off_t)-1 ? -1 : 0;
1397	}	1013	}
1398		1014
1399	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */	1015	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1400	static int	1016	static int
1401	eio__realpath (struct tmpbuf tmpbuf, eio_wd wd, const char path)	1017	eio__realpath (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
1402	{	1018	{
		1019	char *res;
1403	const char *rel = path;	1020	const char *rel = path;
1404	char *res;
1405	char tmp1, tmp2;	1021	char tmp1, tmp2;
1406	#if SYMLOOP_MAX > 32	1022	#if SYMLOOP_MAX > 32
1407	int symlinks = SYMLOOP_MAX;	1023	int symlinks = SYMLOOP_MAX;
1408	#else	1024	#else
1409	int symlinks = 32;	1025	int symlinks = 32;
…		…
1415		1031
1416	errno = ENOENT;	1032	errno = ENOENT;
1417	if (!*rel)	1033	if (!*rel)
1418	return -1;	1034	return -1;
1419		1035
1420	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);	1036	res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
		1037	#ifdef _WIN32
		1038	if (_access (rel, 4) != 0)
		1039	return -1;
		1040
		1041	symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0);
		1042
		1043	errno = ENAMETOOLONG;
		1044	if (symlinks >= EIO_PATH_MAX * 3)
		1045	return -1;
		1046
		1047	errno = EIO;
		1048	if (symlinks <= 0)
		1049	return -1;
		1050
		1051	return symlinks;
		1052
		1053	#else
1421	tmp1 = res + PATH_MAX;	1054	tmp1 = res + EIO_PATH_MAX;
1422	tmp2 = tmp1 + PATH_MAX;	1055	tmp2 = tmp1 + EIO_PATH_MAX;
1423		1056
1424	#if 0 /* disabled, the musl way to do things is just too racy */	1057	#if 0 /* disabled, the musl way to do things is just too racy */
1425	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1058	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1426	/* on linux we may be able to ask the kernel */	1059	/* on linux we may be able to ask the kernel */
1427	{	1060	{
1428	int fd = open (rel, O_RDONLY \| O_NONBLOCK \| O_NOCTTY \| O_NOATIME);	1061	int fd = open (rel, O_RDONLY \| O_NONBLOCK \| O_NOCTTY \| O_NOATIME);
1429		1062
1430	if (fd >= 0)	1063	if (fd >= 0)
1431	{	1064	{
1432	sprintf (tmp1, "/proc/self/fd/%d", fd);	1065	sprintf (tmp1, "/proc/self/fd/%d", fd);
1433	req->result = readlink (tmp1, res, PATH_MAX);	1066	req->result = readlink (tmp1, res, EIO_PATH_MAX);
1434	close (fd);
1435
1436	/* here we should probably stat the open file and the disk file, to make sure they still match */	1067	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1068	eio__close (fd);
1437		1069
1438	if (req->result > 0)	1070	if (req->result > 0)
1439	goto done;	1071	goto done;
1440	}	1072	}
1441	else if (errno == ELOOP \|\| errno == ENAMETOOLONG \|\| errno == ENOENT \|\| errno == ENOTDIR \|\| errno == EIO)	1073	else if (errno == ELOOP \|\| errno == ENAMETOOLONG \|\| errno == ENOENT \|\| errno == ENOTDIR \|\| errno == EIO)
1442	return;	1074	return -1;
1443	}	1075	}
1444	#endif	1076	#endif
1445	#endif	1077	#endif
1446		1078
1447	if (*rel != '/')	1079	if (*rel != '/')
…		…
1452	if (wd == EIO_INVALID_WD)	1084	if (wd == EIO_INVALID_WD)
1453	return -1;	1085	return -1;
1454		1086
1455	if (wd == EIO_CWD)	1087	if (wd == EIO_CWD)
1456	{	1088	{
1457	if (!getcwd (res, PATH_MAX))	1089	if (!getcwd (res, EIO_PATH_MAX))
1458	return -1;	1090	return -1;
1459		1091
1460	len = strlen (res);	1092	len = strlen (res);
1461	}	1093	}
1462	else	1094	else
…		…
1509		1141
1510	/* zero-terminate, for readlink */	1142	/* zero-terminate, for readlink */
1511	res [len + 1] = 0;	1143	res [len + 1] = 0;
1512		1144
1513	/* now check if it's a symlink */	1145	/* now check if it's a symlink */
1514	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);	1146	linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1515		1147
1516	if (linklen < 0)	1148	if (linklen < 0)
1517	{	1149	{
1518	if (errno != EINVAL)	1150	if (errno != EINVAL)
1519	return -1;	1151	return -1;
…		…
1525	{	1157	{
1526	/* yay, it was a symlink - build new path in tmp2 */	1158	/* yay, it was a symlink - build new path in tmp2 */
1527	int rellen = strlen (rel);	1159	int rellen = strlen (rel);
1528		1160
1529	errno = ENAMETOOLONG;	1161	errno = ENAMETOOLONG;
1530	if (linklen + 1 + rellen >= PATH_MAX)	1162	if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1531	return -1;	1163	return -1;
1532		1164
1533	errno = ELOOP;	1165	errno = ELOOP;
1534	if (!--symlinks)	1166	if (!--symlinks)
1535	return -1;	1167	return -1;
…		…
1549	/* special case for the lone root path */	1181	/* special case for the lone root path */
1550	if (res == tmpbuf->ptr)	1182	if (res == tmpbuf->ptr)
1551	*res++ = '/';	1183	*res++ = '/';
1552		1184
1553	return res - (char *)tmpbuf->ptr;	1185	return res - (char *)tmpbuf->ptr;
		1186	#endif
1554	}	1187	}
1555		1188
1556	static signed char	1189	static signed char
1557	eio_dent_cmp (const eio_dirent a, const eio_dirent b)	1190	eio_dent_cmp (const eio_dirent a, const eio_dirent b)
1558	{	1191	{
…		…
1788	return;	1421	return;
1789	}	1422	}
1790	}	1423	}
1791	#else	1424	#else
1792	#if HAVE_AT	1425	#if HAVE_AT
1793	if (req->wd)
1794	{	1426	{
1795	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC \| O_SEARCH \| O_DIRECTORY);	1427	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC \| O_RDONLY \| O_DIRECTORY \| O_NONBLOCK);
1796		1428
1797	if (fd < 0)	1429	if (fd < 0)
		1430	return;
		1431
		1432	dirp = fdopendir (fd);
		1433
		1434	if (!dirp)
		1435	{
		1436	silent_close (fd);
1798	return;	1437	return;
1799
1800	dirp = fdopendir (fd);
1801
1802	if (!dirp)
1803	close (fd);
1804	}	1438	}
1805	else	1439	}
1806	dirp = opendir (req->ptr1);
1807	#else	1440	#else
1808	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));	1441	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1442
		1443	if (!dirp)
		1444	return;
1809	#endif	1445	#endif
1810
1811	if (!dirp)
1812	return;
1813	#endif	1446	#endif
1814		1447
1815	if (req->flags & EIO_FLAG_PTR1_FREE)	1448	if (req->flags & EIO_FLAG_PTR1_FREE)
1816	free (req->ptr1);	1449	free (req->ptr1);
1817		1450
…		…
1931	#ifdef DT_FIFO	1564	#ifdef DT_FIFO
1932	case DT_FIFO: ent->type = EIO_DT_FIFO; break;	1565	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1933	#endif	1566	#endif
1934	#ifdef DT_CHR	1567	#ifdef DT_CHR
1935	case DT_CHR: ent->type = EIO_DT_CHR; break;	1568	case DT_CHR: ent->type = EIO_DT_CHR; break;
1936	#endif	1569	#endif
1937	#ifdef DT_MPC	1570	#ifdef DT_MPC
1938	case DT_MPC: ent->type = EIO_DT_MPC; break;	1571	case DT_MPC: ent->type = EIO_DT_MPC; break;
1939	#endif	1572	#endif
1940	#ifdef DT_DIR	1573	#ifdef DT_DIR
1941	case DT_DIR: ent->type = EIO_DT_DIR; break;	1574	case DT_DIR: ent->type = EIO_DT_DIR; break;
1942	#endif	1575	#endif
1943	#ifdef DT_NAM	1576	#ifdef DT_NAM
1944	case DT_NAM: ent->type = EIO_DT_NAM; break;	1577	case DT_NAM: ent->type = EIO_DT_NAM; break;
1945	#endif	1578	#endif
1946	#ifdef DT_BLK	1579	#ifdef DT_BLK
1947	case DT_BLK: ent->type = EIO_DT_BLK; break;	1580	case DT_BLK: ent->type = EIO_DT_BLK; break;
1948	#endif	1581	#endif
1949	#ifdef DT_MPB	1582	#ifdef DT_MPB
1950	case DT_MPB: ent->type = EIO_DT_MPB; break;	1583	case DT_MPB: ent->type = EIO_DT_MPB; break;
1951	#endif	1584	#endif
1952	#ifdef DT_REG	1585	#ifdef DT_REG
1953	case DT_REG: ent->type = EIO_DT_REG; break;	1586	case DT_REG: ent->type = EIO_DT_REG; break;
1954	#endif	1587	#endif
1955	#ifdef DT_NWK	1588	#ifdef DT_NWK
1956	case DT_NWK: ent->type = EIO_DT_NWK; break;	1589	case DT_NWK: ent->type = EIO_DT_NWK; break;
1957	#endif	1590	#endif
1958	#ifdef DT_CMP	1591	#ifdef DT_CMP
1959	case DT_CMP: ent->type = EIO_DT_CMP; break;	1592	case DT_CMP: ent->type = EIO_DT_CMP; break;
1960	#endif	1593	#endif
1961	#ifdef DT_LNK	1594	#ifdef DT_LNK
1962	case DT_LNK: ent->type = EIO_DT_LNK; break;	1595	case DT_LNK: ent->type = EIO_DT_LNK; break;
1963	#endif	1596	#endif
1964	#ifdef DT_SOCK	1597	#ifdef DT_SOCK
1965	case DT_SOCK: ent->type = EIO_DT_SOCK; break;	1598	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
…		…
2014	/* keep the absolute path in string form at all times */	1647	/* keep the absolute path in string form at all times */
2015	/* fuck yeah. */	1648	/* fuck yeah. */
2016		1649
2017	#if !HAVE_AT	1650	#if !HAVE_AT
2018		1651
2019	/* a bit like realpath, but usually faster because it doesn'T have to return */	1652	/* a bit like realpath, but usually faster because it doesn't have to return */
2020	/* an absolute or canonical path */	1653	/* an absolute or canonical path */
2021	static const char *	1654	static const char *
2022	wd_expand (struct tmpbuf tmpbuf, eio_wd wd, const char path)	1655	wd_expand (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
2023	{	1656	{
2024	if (!wd \|\| *path == '/')	1657	if (!wd \|\| *path == '/')
2025	return path;	1658	return path;
2026		1659
2027	if (path [0] == '.' && !path [1])	1660	if (path [0] == '.' && !path [1])
…		…
2029		1662
2030	{	1663	{
2031	int l1 = wd->len;	1664	int l1 = wd->len;
2032	int l2 = strlen (path);	1665	int l2 = strlen (path);
2033		1666
2034	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);	1667	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
2035		1668
2036	memcpy (res, wd->str, l1);	1669	memcpy (res, wd->str, l1);
2037	res [l1] = '/';	1670	res [l1] = '/';
2038	memcpy (res + l1 + 1, path, l2 + 1);	1671	memcpy (res + l1 + 1, path, l2 + 1);
2039		1672
…		…
2042	}	1675	}
2043		1676
2044	#endif	1677	#endif
2045		1678
2046	static eio_wd	1679	static eio_wd
2047	eio__wd_open_sync (struct tmpbuf tmpbuf, eio_wd wd, const char path)	1680	eio__wd_open_sync (struct etp_tmpbuf tmpbuf, eio_wd wd, const char path)
2048	{	1681	{
2049	int fd;	1682	int fd;
2050	eio_wd res;	1683	eio_wd res;
2051	int len = eio__realpath (tmpbuf, wd, path);	1684	int len = eio__realpath (tmpbuf, wd, path);
2052		1685
2053	if (len < 0)	1686	if (len < 0)
2054	return EIO_INVALID_WD;	1687	return EIO_INVALID_WD;
2055		1688
2056	#if HAVE_AT	1689	#if HAVE_AT
2057	fd = openat (WD2FD (wd), path, O_CLOEXEC \| O_SEARCH \| O_DIRECTORY);	1690	fd = openat (WD2FD (wd), path, EIO_O_PATH \| O_DIRECTORY \| O_NONBLOCK \| O_CLOEXEC);
		1691
		1692	/* 0 is a valid fd, but we use it for EIO_CWD, so in the very unlikely */
		1693	/* case of fd 0 being available (almost certainly an a pplication bug) */
		1694	/* make sure we use another fd value */
		1695	#if EIO_CWD
		1696	error EIO_CWD must be 0
		1697	#endif
		1698	if (ecb_expect_false (fd == 0))
		1699	{
		1700	int fd2 = fcntl (fd, F_DUPFD_CLOEXEC ? F_DUPFD_CLOEXEC : F_DUPFD);
		1701	fcntl (fd2, F_SETFD, FD_CLOEXEC);
		1702	eio__close (fd);
		1703	fd = fd2;
		1704	}
2058		1705
2059	if (fd < 0)	1706	if (fd < 0)
2060	return EIO_INVALID_WD;	1707	return EIO_INVALID_WD;
2061	#endif	1708	#endif
2062		1709
…		…
2074	}	1721	}
2075		1722
2076	eio_wd	1723	eio_wd
2077	eio_wd_open_sync (eio_wd wd, const char *path)	1724	eio_wd_open_sync (eio_wd wd, const char *path)
2078	{	1725	{
2079	struct tmpbuf tmpbuf = { 0 };	1726	struct etp_tmpbuf tmpbuf = { 0 };
2080	wd = eio__wd_open_sync (&tmpbuf, wd, path);	1727	wd = eio__wd_open_sync (&tmpbuf, wd, path);
2081	free (tmpbuf.ptr);	1728	free (tmpbuf.ptr);
2082		1729
2083	return wd;	1730	return wd;
2084	}	1731	}
…		…
2087	eio_wd_close_sync (eio_wd wd)	1734	eio_wd_close_sync (eio_wd wd)
2088	{	1735	{
2089	if (wd != EIO_INVALID_WD && wd != EIO_CWD)	1736	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
2090	{	1737	{
2091	#if HAVE_AT	1738	#if HAVE_AT
2092	close (wd->fd);	1739	eio__close (wd->fd);
2093	#endif	1740	#endif
2094	free (wd);	1741	free (wd);
2095	}	1742	}
2096	}	1743	}
2097		1744
2098	#if HAVE_AT	1745	#if HAVE_AT
2099		1746
		1747	static int
		1748	eio__renameat2 (int olddirfd, const char oldpath, int newdirfd, const char newpath, unsigned int flags)
		1749	{
		1750	#if HAVE_RENAMEAT2
		1751	return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags);
		1752	#else
		1753	if (flags)
		1754	return EIO_ENOSYS ();
		1755
		1756	return renameat (olddirfd, oldpath, newdirfd, newpath);
		1757	#endif
		1758	}
		1759
2100	/* they forgot these */	1760	/* they forgot these */
2101		1761
2102	static int	1762	static int
2103	eio__truncateat (int dirfd, const char *path, off_t length)	1763	eio__truncateat (int dirfd, const char *path, off_t length)
2104	{	1764	{
2105	int fd = openat (dirfd, path, O_WRONLY \| O_CLOEXEC);	1765	int fd = openat (dirfd, path, O_WRONLY \| O_CLOEXEC \| O_NONBLOCK);
2106	int res;	1766	int res;
2107		1767
2108	if (fd < 0)	1768	if (fd < 0)
2109	return fd;	1769	return fd;
2110		1770
2111	res = ftruncate (fd, length);	1771	res = ftruncate (fd, length);
2112	close (fd);	1772	silent_close (fd);
2113	return res;	1773	return res;
2114	}	1774	}
2115		1775
2116	static int	1776	static int
2117	eio__statvfsat (int dirfd, const char path, struct statvfs buf)	1777	eio__statvfsat (int dirfd, const char path, struct statvfs buf)
2118	{	1778	{
2119	int fd = openat (dirfd, path, O_SEARCH \| O_CLOEXEC);	1779	int fd = openat (dirfd, path, EIO_O_PATH \| O_CLOEXEC \| O_NONBLOCK);
2120	int res;	1780	int res;
2121		1781
2122	if (fd < 0)	1782	if (fd < 0)
2123	return fd;	1783	return fd;
2124		1784
2125	res = fstatvfs (fd, buf);	1785	res = fstatvfs (fd, buf);
2126	close (fd);	1786	silent_close (fd);
2127	return res;	1787	return res;
2128
2129	}	1788	}
2130		1789
2131	#endif	1790	#endif
2132		1791
2133	/*****************************************************************************/	1792	/*****************************************************************************/
2134		1793
2135	#define ALLOC(len) \	1794	#define ALLOC(len) \
2136	if (!req->ptr2) \	1795	if (!req->ptr2) \
2137	{ \	1796	{ \
2138	X_LOCK (wrklock); \	1797	X_LOCK (EIO_POOL->wrklock); \
2139	req->flags \|= EIO_FLAG_PTR2_FREE; \	1798	req->flags \|= EIO_FLAG_PTR2_FREE; \
2140	X_UNLOCK (wrklock); \	1799	X_UNLOCK (EIO_POOL->wrklock); \
2141	req->ptr2 = malloc (len); \	1800	req->ptr2 = malloc (len); \
2142	if (!req->ptr2) \	1801	if (!req->ptr2) \
2143	{ \	1802	{ \
2144	errno = ENOMEM; \	1803	errno = ENOMEM; \
2145	req->result = -1; \	1804	req->result = -1; \
2146	break; \	1805	goto alloc_fail; \
2147	} \	1806	} \
2148	}	1807	}
2149		1808
2150	static void ecb_noinline ecb_cold	1809	/*****************************************************************************/
2151	etp_proc_init (void)
2152	{
2153	#if HAVE_PRCTL_SET_NAME
2154	/* provide a more sensible "thread name" */
2155	char name[16 + 1];
2156	const int namelen = sizeof (name) - 1;
2157	int len;
2158		1810
2159	prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);	1811	static void
2160	name [namelen] = 0;	1812	eio__slurp (int fd, eio_req *req)
2161	len = strlen (name);
2162	strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
2163	prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
2164	#endif
2165	}
2166
2167	X_THREAD_PROC (etp_proc)
2168	{	1813	{
2169	ETP_REQ *req;	1814	req->result = fd;
2170	struct timespec ts;
2171	etp_worker self = (etp_worker )thr_arg;
2172		1815
2173	etp_proc_init ();	1816	if (fd < 0)
		1817	return;
2174		1818
2175	/* try to distribute timeouts somewhat evenly */	1819	if (req->offs < 0 \|\| !req->size) /* do we need the size? */
2176	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
2177
2178	for (;;)
2179	{	1820	{
2180	ts.tv_sec = 0;	1821	off_t size = lseek (fd, 0, SEEK_END);
2181		1822
2182	X_LOCK (reqlock);
2183
2184	for (;;)
2185	{
2186	req = reqq_shift (&req_queue);
2187
2188	if (req)
2189	break;
2190
2191	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
2192	{
2193	X_UNLOCK (reqlock);
2194	X_LOCK (wrklock);
2195	--started;
2196	X_UNLOCK (wrklock);
2197	goto quit;
2198	}
2199
2200	++idle;
2201
2202	if (idle <= max_idle)
2203	/* we are allowed to idle, so do so without any timeout */
2204	X_COND_WAIT (reqwait, reqlock);
2205	else
2206	{
2207	/* initialise timeout once */
2208	if (!ts.tv_sec)
2209	ts.tv_sec = time (0) + idle_timeout;
2210
2211	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
2212	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
2213	}
2214
2215	--idle;
2216	}
2217
2218	--nready;
2219
2220	X_UNLOCK (reqlock);
2221
2222	if (req->type < 0)	1823	if (req->offs < 0)
2223	goto quit;	1824	req->offs += size;
2224		1825
2225	ETP_EXECUTE (self, req);	1826	if (!req->size)
2226		1827	req->size = size - req->offs;
2227	X_LOCK (reslock);
2228
2229	++npending;
2230
2231	if (!reqq_push (&res_queue, req) && want_poll_cb)
2232	want_poll_cb ();
2233
2234	etp_worker_clear (self);
2235
2236	X_UNLOCK (reslock);
2237	}	1828	}
2238		1829
2239	quit:	1830	ALLOC (req->size);
2240	free (req);	1831	req->result = pread (fd, req->ptr2, req->size, req->offs);
2241		1832
2242	X_LOCK (wrklock);	1833	silent_close (fd);
2243	etp_worker_free (self);
2244	X_UNLOCK (wrklock);
2245	}
2246		1834
2247	/*****************************************************************************/	1835	alloc_fail:
		1836	;
		1837	}
2248		1838
2249	int ecb_cold	1839	int ecb_cold
2250	eio_init (void (want_poll)(void), void (done_poll)(void))	1840	eio_init (void (want_poll)(void), void (done_poll)(void))
2251	{	1841	{
2252	#if !HAVE_PREADWRITE	1842	eio_want_poll_cb = want_poll;
2253	X_MUTEX_CREATE (preadwritelock);	1843	eio_done_poll_cb = done_poll;
2254	#endif
2255		1844
2256	return etp_init (want_poll, done_poll);	1845	return etp_init (EIO_POOL, 0, 0, 0);
2257	}	1846	}
2258		1847
2259	ecb_inline void	1848	ecb_inline void
2260	eio_api_destroy (eio_req *req)	1849	eio_api_destroy (eio_req *req)
2261	{	1850	{
2262	free (req);	1851	free (req);
2263	}	1852	}
2264		1853
2265	#define REQ(rtype) \	1854	#define REQ(rtype) \
2266	eio_req *req; \	1855	eio_req *req; \
2267	\	1856	\
2268	req = (eio_req )calloc (1, sizeof req); \	1857	req = (eio_req )calloc (1, sizeof req); \
2269	if (!req) \	1858	if (!req) \
2270	return 0; \	1859	return 0; \
…		…
2284	{ \	1873	{ \
2285	eio_api_destroy (req); \	1874	eio_api_destroy (req); \
2286	return 0; \	1875	return 0; \
2287	}	1876	}
2288		1877
		1878	#define SINGLEDOT(ptr) (0[(char )(ptr)] == '.' && !1[(char )(ptr)])
		1879
2289	static void	1880	static void
2290	eio_execute (etp_worker self, eio_req req)	1881	eio_execute (etp_worker self, eio_req req)
2291	{	1882	{
2292	#if HAVE_AT	1883	#if HAVE_AT
2293	int dirfd;	1884	int dirfd;
…		…
2333	: read (req->int1, req->ptr2, req->size); break;	1924	: read (req->int1, req->ptr2, req->size); break;
2334	case EIO_WRITE: req->result = req->offs >= 0	1925	case EIO_WRITE: req->result = req->offs >= 0
2335	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1926	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2336	: write (req->int1, req->ptr2, req->size); break;	1927	: write (req->int1, req->ptr2, req->size); break;
2337		1928
		1929	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1930	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1931
2338	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1932	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2339	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	1933	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2340		1934
2341	#if HAVE_AT	1935	#if HAVE_AT
2342		1936
…		…
2346	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;	1940	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
2347	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;	1941	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
2348	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;	1942	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
2349	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;	1943	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
2350	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;	1944	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1945	case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY \| O_CLOEXEC), req); break;
2351		1946
2352	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;	1947	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
2353	case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;	1948	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1949	req->result = req->wd && SINGLEDOT (req->ptr1)
		1950	? rmdir (req->wd->str)
		1951	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
2354	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;	1952	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
2355	case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;	1953	case EIO_RENAME: req->result = eio__renameat2 (
		1954	dirfd,
		1955	/* complications arise because "." cannot be renamed, so we might have to expand */
		1956	req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1,
		1957	WD2FD ((eio_wd)req->int3),
		1958	req->ptr2,
		1959	req->int2
		1960	);
		1961	break;
2356	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;	1962	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
2357	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;	1963	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
2358	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;	1964	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2359	case EIO_READLINK: ALLOC (PATH_MAX);
2360	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
2361	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	1965	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2362	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	1966	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1967	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1968	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX);
		1969	if (req->result == EIO_PATH_MAX)
		1970	{
		1971	req->result = -1;
		1972	errno = ENAMETOOLONG;
		1973	}
		1974	break;
2363	case EIO_UTIME:	1975	case EIO_UTIME:
2364	case EIO_FUTIME:	1976	case EIO_FUTIME:
2365	{	1977	{
2366	struct timespec ts[2];	1978	struct timespec ts[2];
2367	struct timespec *times;	1979	struct timespec *times;
…		…
2392	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;	2004	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2393	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;	2005	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
2394	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;	2006	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
2395	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;	2007	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2396	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;	2008	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		2009	case EIO_SLURP: eio__slurp ( open (path , O_RDONLY \| O_CLOEXEC), req); break;
2397		2010
2398	case EIO_UNLINK: req->result = unlink (path ); break;	2011	case EIO_UNLINK: req->result = unlink (path ); break;
2399	case EIO_RMDIR: req->result = rmdir (path ); break;	2012	case EIO_RMDIR: req->result = rmdir (path ); break;
2400	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;	2013	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2401	case EIO_RENAME: req->result = rename (path , req->ptr2); break;	2014	case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break;
2402	case EIO_LINK: req->result = link (path , req->ptr2); break;	2015	case EIO_LINK: req->result = link (path , req->ptr2); break;
2403	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;	2016	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2404	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;	2017	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2405	case EIO_READLINK: ALLOC (PATH_MAX);
2406	req->result = readlink (path, req->ptr2, PATH_MAX); break;
2407	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	2018	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2408	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;	2019	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2020	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		2021	req->result = readlink (path, req->ptr2, EIO_PATH_MAX);
		2022	if (req->result == EIO_PATH_MAX)
		2023	{
		2024	req->result = -1;
		2025	errno = ENAMETOOLONG;
		2026	}
		2027	break;
2409		2028
2410	case EIO_UTIME:	2029	case EIO_UTIME:
2411	case EIO_FUTIME:	2030	case EIO_FUTIME:
2412	{	2031	{
2413	struct timeval tv[2];	2032	struct timeval tv[2];
…		…
2448		2067
2449	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2068	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2450	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2069	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2451	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2070	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2452		2071
2453	case EIO_CLOSE: req->result = close (req->int1); break;	2072	case EIO_CLOSE: req->result = eio__close (req->int1); break;
2454	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2073	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2455	case EIO_SYNC: req->result = 0; sync (); break;	2074	case EIO_SYNC: req->result = 0; sync (); break;
2456	case EIO_FSYNC: req->result = fsync (req->int1); break;	2075	case EIO_FSYNC: req->result = fsync (req->int1); break;
2457	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2076	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2458	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;	2077	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
…		…
2478	req->result = select (0, 0, 0, 0, &tv);	2097	req->result = select (0, 0, 0, 0, &tv);
2479	}	2098	}
2480	#endif	2099	#endif
2481	break;	2100	break;
2482		2101
		2102	#if 0
2483	case EIO_GROUP:	2103	case EIO_GROUP:
2484	abort (); /* handled in eio_request */	2104	abort (); /* handled in eio_request */
		2105	#endif
2485		2106
2486	case EIO_NOP:	2107	case EIO_NOP:
2487	req->result = 0;	2108	req->result = 0;
2488	break;	2109	break;
2489		2110
…		…
2494	default:	2115	default:
2495	req->result = EIO_ENOSYS ();	2116	req->result = EIO_ENOSYS ();
2496	break;	2117	break;
2497	}	2118	}
2498		2119
		2120	alloc_fail:
2499	req->errorno = errno;	2121	req->errorno = errno;
2500	}	2122	}
2501		2123
2502	#ifndef EIO_NO_WRAPPERS	2124	#ifndef EIO_NO_WRAPPERS
2503		2125
…		…
2592	}	2214	}
2593		2215
2594	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2216	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2595	{	2217	{
2596	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2218	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2219	}
		2220
		2221	eio_req eio_fcntl (int fd, int cmd, void arg, int pri, eio_cb cb, void *data)
		2222	{
		2223	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2224	}
		2225
		2226	eio_req eio_ioctl (int fd, unsigned long request, void buf, int pri, eio_cb cb, void *data)
		2227	{
		2228	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2597	}	2229	}
2598		2230
2599	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)	2231	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
2600	{	2232	{
2601	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2233	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2746	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)	2378	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)
2747	{	2379	{
2748	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2380	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2749	}	2381	}
2750		2382
		2383	eio_req eio_slurp (const char path, void buf, size_t length, off_t offset, int pri, eio_cb cb, void data)
		2384	{
		2385	REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2386	}
		2387
2751	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data)	2388	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data)
2752	{	2389	{
2753	REQ (EIO_CUSTOM); req->feed = execute; SEND;	2390	REQ (EIO_CUSTOM); req->feed = execute; SEND;
2754	}	2391	}
2755		2392
…		…
2789	void	2426	void
2790	eio_grp_add (eio_req grp, eio_req req)	2427	eio_grp_add (eio_req grp, eio_req req)
2791	{	2428	{
2792	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2429	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2793		2430
2794	grp->flags \|= EIO_FLAG_GROUPADD;	2431	grp->flags \|= ETP_FLAG_GROUPADD;
2795		2432
2796	++grp->size;	2433	++grp->size;
2797	req->grp = grp;	2434	req->grp = grp;
2798		2435
2799	req->grp_prev = 0;	2436	req->grp_prev = 0;
…		…
2812	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2449	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2813	{	2450	{
2814	return eio__sendfile (ofd, ifd, offset, count);	2451	return eio__sendfile (ofd, ifd, offset, count);
2815	}	2452	}
2816		2453
		2454	int eio_mlockall_sync (int flags)
		2455	{
		2456	return eio__mlockall (flags);
		2457	}
		2458

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Comparing libeio/eio.c (file contents): Revision 1.120 by root, Tue Apr 24 18:47:50 2012 UTC vs. Revision 1.161 by root, Fri Feb 16 21:20:52 2024 UTC

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Comparing libeio/eio.c (file contents):
Revision 1.120 by root, Tue Apr 24 18:47:50 2012 UTC vs.
Revision 1.161 by root, Fri Feb 16 21:20:52 2024 UTC