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Comparing libeio/eio.c (file contents):
Revision 1.96 by root, Tue Jul 19 05:20:36 2011 UTC vs.
Revision 1.150 by root, Fri Jun 15 02:57:36 2018 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) 2007,2008,2009,2010,2011,2012,2013,2016,2017 Marc Alexander Lehmann <libeio@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
42	#endif	42	#endif
43		43
44	#include "eio.h"	44	#include "eio.h"
45	#include "ecb.h"	45	#include "ecb.h"
46		46
47	#ifdef EIO_STACKSIZE
48	# define XTHREAD_STACKSIZE EIO_STACKSIZE
49	#endif
50	#include "xthread.h"
51
52	#include <errno.h>	47	#include <errno.h>
53	#include <stddef.h>	48	#include <stddef.h>
54	#include <stdlib.h>	49	#include <stdlib.h>
55	#include <string.h>	50	#include <string.h>
56	#include <errno.h>	51	#include <errno.h>
…		…
105	#ifdef _WIN32	100	#ifdef _WIN32
106		101
107	#undef PAGESIZE	102	#undef PAGESIZE
108	#define PAGESIZE 4096 /* GetSystemInfo? */	103	#define PAGESIZE 4096 /* GetSystemInfo? */
109		104
		105	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		106
110	#ifdef EIO_STRUCT_STATI64	107	#ifdef EIO_STRUCT_STATI64
		108	/* look at perl's non-sloppy stat */
111	#define stat(path,buf) _stati64 (path,buf)	109	#define stat(path,buf) _stati64 (path,buf)
112	#define fstat(fd,buf) _fstati64 (fd,buf)	110	#define fstat(fd,buf) _fstati64 (fd,buf)
113	#endif	111	#endif
114	#define lstat(path,buf) stat (path,buf)	112	#define lstat(path,buf) stat (path,buf)
115	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))	113	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
…		…
117	#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))
118		116
119	#define chmod(path,mode) _chmod (path, mode)	117	#define chmod(path,mode) _chmod (path, mode)
120	#define dup(fd) _dup (fd)	118	#define dup(fd) _dup (fd)
121	#define dup2(fd1,fd2) _dup2 (fd1, fd2)	119	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		120	#define pipe(fds) _pipe (fds, 4096, O_BINARY)
122		121
		122	#define fcntl(fd,cmd,arg) EIO_ENOSYS ()
		123	#define ioctl(fd,cmd,arg) EIO_ENOSYS ()
123	#define fchmod(fd,mode) EIO_ENOSYS ()	124	#define fchmod(fd,mode) EIO_ENOSYS ()
124	#define chown(path,uid,gid) EIO_ENOSYS ()	125	#define chown(path,uid,gid) EIO_ENOSYS ()
125	#define fchown(fd,uid,gid) EIO_ENOSYS ()	126	#define fchown(fd,uid,gid) EIO_ENOSYS ()
126	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	127	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
127	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	128	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
…		…
129	#define sync() EIO_ENOSYS ()	130	#define sync() EIO_ENOSYS ()
130	#define readlink(path,buf,s) EIO_ENOSYS ()	131	#define readlink(path,buf,s) EIO_ENOSYS ()
131	#define statvfs(path,buf) EIO_ENOSYS ()	132	#define statvfs(path,buf) EIO_ENOSYS ()
132	#define fstatvfs(fd,buf) EIO_ENOSYS ()	133	#define fstatvfs(fd,buf) EIO_ENOSYS ()
133		134
		135	#define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
		136	#define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
		137
		138	#if __GNUC__
		139	typedef long long eio_off_t; /* signed for compatibility to msvc */
		140	#else
		141	typedef __int64 eio_off_t; /* unsigned not supported by msvc */
		142	#endif
		143
		144	static eio_ssize_t
		145	eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		146	{
		147	OVERLAPPED o = { 0 };
		148	DWORD got;
		149
		150	o.Offset = offset;
		151	o.OffsetHigh = offset >> 32;
		152
		153	return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		154	? got : -1;
		155	}
		156
		157	static eio_ssize_t
		158	eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		159	{
		160	OVERLAPPED o = { 0 };
		161	DWORD got;
		162
		163	o.Offset = offset;
		164	o.OffsetHigh = offset >> 32;
		165
		166	return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		167	? got : -1;
		168	}
		169
		170	/* rename() uses MoveFile, which fails to overwrite */
		171	#define rename(old,neu) eio__rename (old, neu)
		172
		173	static int
		174	eio__rename (const char *old, const char *neu)
		175	{
		176	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		177	return 0;
		178
		179	/* should steal _dosmaperr */
		180	switch (GetLastError ())
		181	{
		182	case ERROR_FILE_NOT_FOUND:
		183	case ERROR_PATH_NOT_FOUND:
		184	case ERROR_INVALID_DRIVE:
		185	case ERROR_NO_MORE_FILES:
		186	case ERROR_BAD_NETPATH:
		187	case ERROR_BAD_NET_NAME:
		188	case ERROR_BAD_PATHNAME:
		189	case ERROR_FILENAME_EXCED_RANGE:
		190	errno = ENOENT;
		191	break;
		192
		193	default:
		194	errno = EACCES;
		195	break;
		196	}
		197
		198	return -1;
		199	}
		200
134	/* we could even stat and see if it exists */	201	/* we could even stat and see if it exists */
135	static int	202	static int
136	symlink (const char *old, const char *neu)	203	symlink (const char *old, const char *neu)
137	{	204	{
138	#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)
139	if (CreateSymbolicLink (neu, old, 1))	213	if (CreateSymbolicLink (neu, old, flags))
140	return 0;	214	return 0;
141
142	if (CreateSymbolicLink (neu, old, 0))
143	return 0;
144	#endif	215	#endif
145		216
146	return EIO_ERRNO (ENOENT, -1);	217	return EIO_ERRNO (ENOENT, -1);
147	}	218	}
148		219
149	/* POSIX API only */	220	/* POSIX API only, causing trouble for win32 apps */
150	#define CreateHardLink(neu,old,flags) 0	221	#define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
151	#define CreateSymbolicLink(neu,old,flags) 0	222	#define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
152		223
153	struct statvfs	224	struct statvfs
154	{	225	{
155	int dummy;	226	int dummy;
156	};	227	};
…		…
160	#define D_NAME(entp) entp.cFileName	231	#define D_NAME(entp) entp.cFileName
161	#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)
162		233
163	#else	234	#else
164		235
		236	#include <sys/ioctl.h>
165	#include <sys/time.h>	237	#include <sys/time.h>
166	#include <sys/select.h>	238	#include <sys/select.h>
167	#include <sys/statvfs.h>
168	#include <unistd.h>	239	#include <unistd.h>
169	#include <signal.h>	240	#include <signal.h>
170	#include <dirent.h>	241	#include <dirent.h>
171		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
		251
172	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	252	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
173	#include <sys/mman.h>	253	#include <sys/mman.h>
174	#endif	254	#endif
175		255
176	#define D_NAME(entp) entp->d_name	256	#define D_NAME(entp) entp->d_name
177		257
178	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	258	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
179	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	259	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
180	#define _DIRENT_HAVE_D_TYPE /* sigh */	260	#define _DIRENT_HAVE_D_TYPE /* sigh */
181	#define D_INO(de) (de)->d_fileno	261	#define D_INO(de) (de)->d_fileno
182	#define D_NAMLEN(de) (de)->d_namlen	262	#define D_NAMLEN(de) (de)->d_namlen
183	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	263	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
184	#define D_INO(de) (de)->d_ino	264	#define D_INO(de) (de)->d_ino
…		…
199		279
200	#endif	280	#endif
201		281
202	#if HAVE_UTIMES	282	#if HAVE_UTIMES
203	# include <utime.h>	283	# include <utime.h>
		284	#endif
		285
		286	#if HAVE_SYS_SYSCALL_H
		287	# include <sys/syscall.h>
204	#endif	288	#endif
205		289
206	#if HAVE_SENDFILE	290	#if HAVE_SENDFILE
207	# if __linux	291	# if __linux
208	# include <sys/sendfile.h>	292	# include <sys/sendfile.h>
…		…
216	# else	300	# else
217	# error sendfile support requested but not available	301	# error sendfile support requested but not available
218	# endif	302	# endif
219	#endif	303	#endif
220		304
		305	#if HAVE_RENAMEAT2
		306	# include <sys/syscall.h>
		307	# include <linux/fs.h>
		308	#endif
		309
221	#ifndef D_TYPE	310	#ifndef D_TYPE
222	# define D_TYPE(de) 0	311	# define D_TYPE(de) 0
223	#endif	312	#endif
224	#ifndef D_INO	313	#ifndef D_INO
225	# define D_INO(de) 0	314	# define D_INO(de) 0
…		…
233	# define NAME_MAX 4096	322	# define NAME_MAX 4096
234	#endif	323	#endif
235		324
236	/* used for readlink etc. */	325	/* used for readlink etc. */
237	#ifndef PATH_MAX	326	#ifndef PATH_MAX
238	# define PATH_MAX 4096	327	# define PATH_MAX 0
239	#endif	328	#endif
		329
		330	#ifndef O_CLOEXEC
		331	#define O_CLOEXEC 0
		332	#endif
		333
		334	#ifndef EIO_PATH_MIN
		335	# define EIO_PATH_MIN 8160
		336	#endif
		337
		338	#define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX)
240		339
241	/* buffer size for various temporary buffers */	340	/* buffer size for various temporary buffers */
242	#define EIO_BUFSIZE 65536	341	#define EIO_BUFSIZE 65536
243		342
244	#define dBUF \	343	#define dBUF \
245	char *eio_buf = malloc (EIO_BUFSIZE); \	344	char *eio_buf = malloc (EIO_BUFSIZE); \
246	errno = ENOMEM; \	345	errno = ENOMEM; \
247	if (!eio_buf) \	346	if (!eio_buf) \
248	return -1	347	return -1
249		348
250	#define FUBd \	349	#define FUBd \
251	free (eio_buf)	350	free (eio_buf)
252		351
253	#define EIO_TICKS ((1000000 + 1023) >> 10)	352	/*****************************************************************************/
		353
		354	struct etp_tmpbuf;
		355
		356	#if _POSIX_VERSION >= 200809L
		357	#define HAVE_AT 1
		358	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		359	#ifndef O_SEARCH
		360	#define O_SEARCH O_RDONLY
		361	#endif
		362	#else
		363	#define HAVE_AT 0
		364	static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
		365	#endif
		366
		367	struct eio_pwd
		368	{
		369	#if HAVE_AT
		370	int fd;
		371	#endif
		372	int len;
		373	char str[1]; /* actually, a 0-terminated canonical path */
		374	};
		375
		376	/*****************************************************************************/
254		377
255	#define ETP_PRI_MIN EIO_PRI_MIN	378	#define ETP_PRI_MIN EIO_PRI_MIN
256	#define ETP_PRI_MAX EIO_PRI_MAX	379	#define ETP_PRI_MAX EIO_PRI_MAX
257		380
		381	#define ETP_TYPE_QUIT -1
		382	#define ETP_TYPE_GROUP EIO_GROUP
		383
		384	static void eio_nop_callback (void) { }
		385	static void (*eio_want_poll_cb)(void) = eio_nop_callback;
		386	static void (*eio_done_poll_cb)(void) = eio_nop_callback;
		387
		388	#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
		389	#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
		390
258	struct etp_worker;	391	struct etp_worker;
259
260	#define ETP_REQ eio_req	392	#define ETP_REQ eio_req
261	#define ETP_DESTROY(req) eio_destroy (req)	393	#define ETP_DESTROY(req) eio_destroy (req)
262	static int eio_finish (eio_req *req);	394	static int eio_finish (eio_req *req);
263	#define ETP_FINISH(req) eio_finish (req)	395	#define ETP_FINISH(req) eio_finish (req)
264	static void eio_execute (struct etp_worker *self, eio_req *req);	396	static void eio_execute (struct etp_worker *self, eio_req *req);
265	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	397	#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
266		398
267	/*****************************************************************************/	399	#include "etp.c"
268		400
269	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	401	static struct etp_pool eio_pool;
270		402	#define EIO_POOL (&eio_pool)
271	/* calculate time difference in ~1/EIO_TICKS of a second */
272	ecb_inline int
273	tvdiff (struct timeval *tv1, struct timeval *tv2)
274	{
275	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
276	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
277	}
278
279	static unsigned int started, idle, wanted = 4;
280
281	static void (*want_poll_cb) (void);
282	static void (*done_poll_cb) (void);
283
284	static unsigned int max_poll_time; /* reslock */
285	static unsigned int max_poll_reqs; /* reslock */
286
287	static volatile unsigned int nreqs; /* reqlock */
288	static volatile unsigned int nready; /* reqlock */
289	static volatile unsigned int npending; /* reqlock */
290	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
291	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
292
293	static xmutex_t wrklock;
294	static xmutex_t reslock;
295	static xmutex_t reqlock;
296	static xcond_t reqwait;
297
298	#if !HAVE_PREADWRITE
299	/*
300	* make our pread/pwrite emulation safe against themselves, but not against
301	* normal read/write by using a mutex. slows down execution a lot,
302	* but that's your problem, not mine.
303	*/
304	static xmutex_t preadwritelock;
305	#endif
306
307	typedef struct etp_worker
308	{
309	/* locked by wrklock */
310	struct etp_worker *prev, *next;
311
312	xthread_t tid;
313
314	/* locked by reslock, reqlock or wrklock */
315	ETP_REQ *req; /* currently processed request */
316
317	#ifdef ETP_WORKER_COMMON
318	ETP_WORKER_COMMON
319	#endif
320	} etp_worker;
321
322	static etp_worker wrk_first; /* NOT etp */
323
324	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
325	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
326
327	/* worker threads management */
328
329	static void ecb_cold
330	etp_worker_clear (etp_worker *wrk)
331	{
332	}
333
334	static void ecb_cold
335	etp_worker_free (etp_worker *wrk)
336	{
337	wrk->next->prev = wrk->prev;
338	wrk->prev->next = wrk->next;
339
340	free (wrk);
341	}
342
343	static unsigned int
344	etp_nreqs (void)
345	{
346	int retval;
347	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
348	retval = nreqs;
349	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
350	return retval;
351	}
352
353	static unsigned int
354	etp_nready (void)
355	{
356	unsigned int retval;
357
358	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
359	retval = nready;
360	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
361
362	return retval;
363	}
364
365	static unsigned int
366	etp_npending (void)
367	{
368	unsigned int retval;
369
370	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
371	retval = npending;
372	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
373
374	return retval;
375	}
376
377	static unsigned int
378	etp_nthreads (void)
379	{
380	unsigned int retval;
381
382	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
383	retval = started;
384	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
385
386	return retval;
387	}
388
389	/*
390	* a somewhat faster data structure might be nice, but
391	* with 8 priorities this actually needs <20 insns
392	* per shift, the most expensive operation.
393	*/
394	typedef struct {
395	ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
396	int size;
397	} etp_reqq;
398
399	static etp_reqq req_queue;
400	static etp_reqq res_queue;
401
402	static void ecb_noinline ecb_cold
403	reqq_init (etp_reqq *q)
404	{
405	int pri;
406
407	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
408	q->qs[pri] = q->qe[pri] = 0;
409
410	q->size = 0;
411	}
412
413	static int ecb_noinline
414	reqq_push (etp_reqq *q, ETP_REQ *req)
415	{
416	int pri = req->pri;
417	req->next = 0;
418
419	if (q->qe[pri])
420	{
421	q->qe[pri]->next = req;
422	q->qe[pri] = req;
423	}
424	else
425	q->qe[pri] = q->qs[pri] = req;
426
427	return q->size++;
428	}
429
430	static ETP_REQ * ecb_noinline
431	reqq_shift (etp_reqq *q)
432	{
433	int pri;
434
435	if (!q->size)
436	return 0;
437
438	--q->size;
439
440	for (pri = ETP_NUM_PRI; pri--; )
441	{
442	eio_req *req = q->qs[pri];
443
444	if (req)
445	{
446	if (!(q->qs[pri] = (eio_req *)req->next))
447	q->qe[pri] = 0;
448
449	return req;
450	}
451	}
452
453	abort ();
454	}
455
456	static int ecb_cold
457	etp_init (void (*want_poll)(void), void (*done_poll)(void))
458	{
459	X_MUTEX_CREATE (wrklock);
460	X_MUTEX_CREATE (reslock);
461	X_MUTEX_CREATE (reqlock);
462	X_COND_CREATE (reqwait);
463
464	reqq_init (&req_queue);
465	reqq_init (&res_queue);
466
467	wrk_first.next =
468	wrk_first.prev = &wrk_first;
469
470	started = 0;
471	idle = 0;
472	nreqs = 0;
473	nready = 0;
474	npending = 0;
475
476	want_poll_cb = want_poll;
477	done_poll_cb = done_poll;
478
479	return 0;
480	}
481
482	X_THREAD_PROC (etp_proc);
483
484	static void ecb_cold
485	etp_start_thread (void)
486	{
487	etp_worker *wrk = calloc (1, sizeof (etp_worker));
488
489	/*TODO*/
490	assert (("unable to allocate worker thread data", wrk));
491
492	X_LOCK (wrklock);
493
494	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
495	{
496	wrk->prev = &wrk_first;
497	wrk->next = wrk_first.next;
498	wrk_first.next->prev = wrk;
499	wrk_first.next = wrk;
500	++started;
501	}
502	else
503	free (wrk);
504
505	X_UNLOCK (wrklock);
506	}
507
508	static void
509	etp_maybe_start_thread (void)
510	{
511	if (ecb_expect_true (etp_nthreads () >= wanted))
512	return;
513
514	/* todo: maybe use idle here, but might be less exact */
515	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
516	return;
517
518	etp_start_thread ();
519	}
520
521	static void ecb_cold
522	etp_end_thread (void)
523	{
524	eio_req *req = calloc (1, sizeof (eio_req));
525
526	req->type = -1;
527	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
528
529	X_LOCK (reqlock);
530	reqq_push (&req_queue, req);
531	X_COND_SIGNAL (reqwait);
532	X_UNLOCK (reqlock);
533
534	X_LOCK (wrklock);
535	--started;
536	X_UNLOCK (wrklock);
537	}
538
539	static int
540	etp_poll (void)
541	{
542	unsigned int maxreqs;
543	unsigned int maxtime;
544	struct timeval tv_start, tv_now;
545
546	X_LOCK (reslock);
547	maxreqs = max_poll_reqs;
548	maxtime = max_poll_time;
549	X_UNLOCK (reslock);
550
551	if (maxtime)
552	gettimeofday (&tv_start, 0);
553
554	for (;;)
555	{
556	ETP_REQ *req;
557
558	etp_maybe_start_thread ();
559
560	X_LOCK (reslock);
561	req = reqq_shift (&res_queue);
562
563	if (req)
564	{
565	--npending;
566
567	if (!res_queue.size && done_poll_cb)
568	done_poll_cb ();
569	}
570
571	X_UNLOCK (reslock);
572
573	if (!req)
574	return 0;
575
576	X_LOCK (reqlock);
577	--nreqs;
578	X_UNLOCK (reqlock);
579
580	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
581	{
582	req->int1 = 1; /* mark request as delayed */
583	continue;
584	}
585	else
586	{
587	int res = ETP_FINISH (req);
588	if (ecb_expect_false (res))
589	return res;
590	}
591
592	if (ecb_expect_false (maxreqs && !--maxreqs))
593	break;
594
595	if (maxtime)
596	{
597	gettimeofday (&tv_now, 0);
598
599	if (tvdiff (&tv_start, &tv_now) >= maxtime)
600	break;
601	}
602	}
603
604	errno = EAGAIN;
605	return -1;
606	}
607
608	static void
609	etp_cancel (ETP_REQ *req)
610	{
611	req->cancelled = 1;
612
613	eio_grp_cancel (req);
614	}
615
616	static void
617	etp_submit (ETP_REQ *req)
618	{
619	req->pri -= ETP_PRI_MIN;
620
621	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
622	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
623
624	if (ecb_expect_false (req->type == EIO_GROUP))
625	{
626	/* I hope this is worth it :/ */
627	X_LOCK (reqlock);
628	++nreqs;
629	X_UNLOCK (reqlock);
630
631	X_LOCK (reslock);
632
633	++npending;
634
635	if (!reqq_push (&res_queue, req) && want_poll_cb)
636	want_poll_cb ();
637
638	X_UNLOCK (reslock);
639	}
640	else
641	{
642	X_LOCK (reqlock);
643	++nreqs;
644	++nready;
645	reqq_push (&req_queue, req);
646	X_COND_SIGNAL (reqwait);
647	X_UNLOCK (reqlock);
648
649	etp_maybe_start_thread ();
650	}
651	}
652
653	static void ecb_cold
654	etp_set_max_poll_time (double nseconds)
655	{
656	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
657	max_poll_time = nseconds * EIO_TICKS;
658	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
659	}
660
661	static void ecb_cold
662	etp_set_max_poll_reqs (unsigned int maxreqs)
663	{
664	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
665	max_poll_reqs = maxreqs;
666	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
667	}
668
669	static void ecb_cold
670	etp_set_max_idle (unsigned int nthreads)
671	{
672	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
673	max_idle = nthreads;
674	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
675	}
676
677	static void ecb_cold
678	etp_set_idle_timeout (unsigned int seconds)
679	{
680	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
681	idle_timeout = seconds;
682	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
683	}
684
685	static void ecb_cold
686	etp_set_min_parallel (unsigned int nthreads)
687	{
688	if (wanted < nthreads)
689	wanted = nthreads;
690	}
691
692	static void ecb_cold
693	etp_set_max_parallel (unsigned int nthreads)
694	{
695	if (wanted > nthreads)
696	wanted = nthreads;
697
698	while (started > wanted)
699	etp_end_thread ();
700	}
701		403
702	/*****************************************************************************/	404	/*****************************************************************************/
703		405
704	static void	406	static void
705	grp_try_feed (eio_req *grp)	407	grp_try_feed (eio_req *grp)
706	{	408	{
707	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	409	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
708	{	410	{
709	grp->flags &= ~EIO_FLAG_GROUPADD;	411	grp->flags &= ~ETP_FLAG_GROUPADD;
710		412
711	EIO_FEED (grp);	413	EIO_FEED (grp);
712		414
713	/* stop if no progress has been made */	415	/* stop if no progress has been made */
714	if (!(grp->flags & EIO_FLAG_GROUPADD))	416	if (!(grp->flags & ETP_FLAG_GROUPADD))
715	{	417	{
716	grp->feed = 0;	418	grp->feed = 0;
717	break;	419	break;
718	}	420	}
719	}	421	}
…		…
726		428
727	/* call feeder, if applicable */	429	/* call feeder, if applicable */
728	grp_try_feed (grp);	430	grp_try_feed (grp);
729		431
730	/* finish, if done */	432	/* finish, if done */
731	if (!grp->size && grp->int1)	433	if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
732	return eio_finish (grp);	434	return eio_finish (grp);
733	else	435	else
734	return 0;	436	return 0;
735	}	437	}
736		438
…		…
772	}	474	}
773		475
774	void	476	void
775	eio_grp_cancel (eio_req *grp)	477	eio_grp_cancel (eio_req *grp)
776	{	478	{
777	for (grp = grp->grp_first; grp; grp = grp->grp_next)	479	etp_grp_cancel (EIO_POOL, grp);
778	eio_cancel (grp);
779	}	480	}
780		481
781	void	482	void
782	eio_cancel (eio_req *req)	483	eio_cancel (eio_req *req)
783	{	484	{
784	etp_cancel (req);	485	etp_cancel (EIO_POOL, req);
785	}	486	}
786		487
787	void	488	void
788	eio_submit (eio_req *req)	489	eio_submit (eio_req *req)
789	{	490	{
790	etp_submit (req);	491	etp_submit (EIO_POOL, req);
791	}	492	}
792		493
793	unsigned int	494	unsigned int
794	eio_nreqs (void)	495	eio_nreqs (void)
795	{	496	{
796	return etp_nreqs ();	497	return etp_nreqs (EIO_POOL);
797	}	498	}
798		499
799	unsigned int	500	unsigned int
800	eio_nready (void)	501	eio_nready (void)
801	{	502	{
802	return etp_nready ();	503	return etp_nready (EIO_POOL);
803	}	504	}
804		505
805	unsigned int	506	unsigned int
806	eio_npending (void)	507	eio_npending (void)
807	{	508	{
808	return etp_npending ();	509	return etp_npending (EIO_POOL);
809	}	510	}
810		511
811	unsigned int ecb_cold	512	unsigned int ecb_cold
812	eio_nthreads (void)	513	eio_nthreads (void)
813	{	514	{
814	return etp_nthreads ();	515	return etp_nthreads (EIO_POOL);
815	}	516	}
816		517
817	void ecb_cold	518	void ecb_cold
818	eio_set_max_poll_time (double nseconds)	519	eio_set_max_poll_time (double nseconds)
819	{	520	{
820	etp_set_max_poll_time (nseconds);	521	etp_set_max_poll_time (EIO_POOL, nseconds);
821	}	522	}
822		523
823	void ecb_cold	524	void ecb_cold
824	eio_set_max_poll_reqs (unsigned int maxreqs)	525	eio_set_max_poll_reqs (unsigned int maxreqs)
825	{	526	{
826	etp_set_max_poll_reqs (maxreqs);	527	etp_set_max_poll_reqs (EIO_POOL, maxreqs);
827	}	528	}
828		529
829	void ecb_cold	530	void ecb_cold
830	eio_set_max_idle (unsigned int nthreads)	531	eio_set_max_idle (unsigned int nthreads)
831	{	532	{
832	etp_set_max_idle (nthreads);	533	etp_set_max_idle (EIO_POOL, nthreads);
833	}	534	}
834		535
835	void ecb_cold	536	void ecb_cold
836	eio_set_idle_timeout (unsigned int seconds)	537	eio_set_idle_timeout (unsigned int seconds)
837	{	538	{
838	etp_set_idle_timeout (seconds);	539	etp_set_idle_timeout (EIO_POOL, seconds);
839	}	540	}
840		541
841	void ecb_cold	542	void ecb_cold
842	eio_set_min_parallel (unsigned int nthreads)	543	eio_set_min_parallel (unsigned int nthreads)
843	{	544	{
844	etp_set_min_parallel (nthreads);	545	etp_set_min_parallel (EIO_POOL, nthreads);
845	}	546	}
846		547
847	void ecb_cold	548	void ecb_cold
848	eio_set_max_parallel (unsigned int nthreads)	549	eio_set_max_parallel (unsigned int nthreads)
849	{	550	{
850	etp_set_max_parallel (nthreads);	551	etp_set_max_parallel (EIO_POOL, nthreads);
851	}	552	}
852		553
853	int eio_poll (void)	554	int eio_poll (void)
854	{	555	{
855	return etp_poll ();	556	return etp_poll (EIO_POOL);
856	}	557	}
857		558
858	/*****************************************************************************/	559	/*****************************************************************************/
859	/* work around various missing functions */	560	/* work around various missing functions */
860		561
861	#if !HAVE_PREADWRITE	562	#if HAVE_POSIX_CLOSE && !__linux
862	# undef pread	563	# define eio__close(fd) posix_close (fd, 0)
863	# undef pwrite	564	#else
864	# define pread eio__pread	565	# define eio__close(fd) close (fd)
865	# define pwrite eio__pwrite
866
867	static eio_ssize_t
868	eio__pread (int fd, void *buf, size_t count, off_t offset)
869	{
870	eio_ssize_t res;
871	off_t ooffset;
872
873	X_LOCK (preadwritelock);
874	ooffset = lseek (fd, 0, SEEK_CUR);
875	lseek (fd, offset, SEEK_SET);
876	res = read (fd, buf, count);
877	lseek (fd, ooffset, SEEK_SET);
878	X_UNLOCK (preadwritelock);
879
880	return res;
881	}
882
883	static eio_ssize_t
884	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
885	{
886	eio_ssize_t res;
887	off_t ooffset;
888
889	X_LOCK (preadwritelock);
890	ooffset = lseek (fd, 0, SEEK_CUR);
891	lseek (fd, offset, SEEK_SET);
892	res = write (fd, buf, count);
893	lseek (fd, ooffset, SEEK_SET);
894	X_UNLOCK (preadwritelock);
895
896	return res;
897	}
898	#endif	566	#endif
		567
		568	/* close() without disturbing errno */
		569	static void
		570	silent_close (int fd)
		571	{
		572	int saved_errno = errno;
		573	eio__close (fd);
		574	errno = saved_errno;
		575	}
899		576
900	#ifndef HAVE_UTIMES	577	#ifndef HAVE_UTIMES
901		578
902	# undef utimes	579	# undef utimes
903	# define utimes(path,times) eio__utimes (path, times)	580	# define utimes(path,times) eio__utimes (path, times)
…		…
936		613
937	#if !HAVE_FDATASYNC	614	#if !HAVE_FDATASYNC
938	# undef fdatasync	615	# undef fdatasync
939	# define fdatasync(fd) fsync (fd)	616	# define fdatasync(fd) fsync (fd)
940	#endif	617	#endif
		618
		619	static int
		620	eio__syncfs (int fd)
		621	{
		622	int res;
		623
		624	#if HAVE_SYS_SYNCFS
		625	res = (int)syscall (__NR_syncfs, (int)(fd));
		626	#else
		627	res = EIO_ENOSYS ();
		628	#endif
		629
		630	if (res < 0 && errno == ENOSYS && fd >= 0)
		631	sync ();
		632
		633	return res;
		634	}
941		635
942	/* sync_file_range always needs emulation */	636	/* sync_file_range always needs emulation */
943	static int	637	static int
944	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	638	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
945	{	639	{
…		…
968	}	662	}
969		663
970	static int	664	static int
971	eio__fallocate (int fd, int mode, off_t offset, size_t len)	665	eio__fallocate (int fd, int mode, off_t offset, size_t len)
972	{	666	{
973	#if HAVE_FALLOCATE	667	#if HAVE_LINUX_FALLOCATE
974	return fallocate (fd, mode, offset, len);	668	return fallocate (fd, mode, offset, len);
975	#else	669	#else
976	errno = ENOSYS;	670	return EIO_ENOSYS ();
977	return -1;
978	#endif	671	#endif
979	}	672	}
980		673
981	#if !HAVE_READAHEAD	674	#if !HAVE_READAHEAD
982	# undef readahead	675	# undef readahead
…		…
997	todo -= len;	690	todo -= len;
998	}	691	}
999		692
1000	FUBd;	693	FUBd;
1001		694
1002	errno = 0;	695	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		696	/* but not for e.g. EIO or eof, so we also never fail */
1003	return count;	697	return 0;
1004	}	698	}
1005		699
1006	#endif	700	#endif
1007		701
1008	/* sendfile always needs emulation */	702	/* sendfile always needs emulation */
…		…
1043		737
1044	/* according to source inspection, this is correct, and useful behaviour */	738	/* according to source inspection, this is correct, and useful behaviour */
1045	if (sbytes)	739	if (sbytes)
1046	res = sbytes;	740	res = sbytes;
1047		741
1048	# elif defined (__APPLE__)	742	# elif defined __APPLE__
1049	off_t sbytes = count;	743	off_t sbytes = count;
1050	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	744	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1051		745
1052	/* according to the manpage, sbytes is always valid */	746	/* according to the manpage, sbytes is always valid */
1053	if (sbytes)	747	if (sbytes)
…		…
1080	HANDLE h = TO_SOCKET (ifd);	774	HANDLE h = TO_SOCKET (ifd);
1081	SetFilePointer (h, offset, 0, FILE_BEGIN);	775	SetFilePointer (h, offset, 0, FILE_BEGIN);
1082	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	776	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1083		777
1084	#else	778	#else
1085	res = -1;	779	res = EIO_ENOSYS ();
1086	errno = ENOSYS;
1087	#endif	780	#endif
1088		781
1089	/* we assume sendfile can copy at least 128mb in one go */	782	/* we assume sendfile can copy at least 128mb in one go */
1090	if (res <= 128 * 1024 * 1024)	783	if (res <= 128 * 1024 * 1024)
1091	{	784	{
…		…
1266	intptr_t end = addr + len;	959	intptr_t end = addr + len;
1267	intptr_t page = eio_pagesize ();	960	intptr_t page = eio_pagesize ();
1268		961
1269	if (addr < end)	962	if (addr < end)
1270	if (flags & EIO_MT_MODIFY) /* modify */	963	if (flags & EIO_MT_MODIFY) /* modify */
1271	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));	964	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req));
1272	else	965	else
1273	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));	966	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req));
1274	}	967	}
1275		968
1276	return 0;	969	return 0;
1277	}	970	}
1278		971
1279	/*****************************************************************************/	972	/*****************************************************************************/
1280	/* requests implemented outside eio_execute, because they are so large */	973	/* requests implemented outside eio_execute, because they are so large */
1281		974
1282	static void	975	static void
1283	eio__realpath (eio_req *req, etp_worker *self)	976	eio__lseek (eio_req *req)
1284	{	977	{
1285	char *rel = req->ptr1;	978	/* this usually gets optimised away completely, or your compiler sucks, */
		979	/* or the whence constants really are not 0, 1, 2 */
		980	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		981	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		982	: req->int2 == EIO_SEEK_END ? SEEK_END
		983	: req->int2;
		984
		985	req->offs = lseek (req->int1, req->offs, whence);
		986	req->result = req->offs == (off_t)-1 ? -1 : 0;
		987	}
		988
		989	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		990	static int
		991	eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		992	{
1286	char *res;	993	char *res;
		994	const char *rel = path;
1287	char *tmp1, *tmp2;	995	char *tmp1, *tmp2;
1288	#if SYMLOOP_MAX > 32	996	#if SYMLOOP_MAX > 32
1289	int symlinks = SYMLOOP_MAX;	997	int symlinks = SYMLOOP_MAX;
1290	#else	998	#else
1291	int symlinks = 32;	999	int symlinks = 32;
1292	#endif	1000	#endif
1293		1001
1294	req->result = -1;
1295
1296	errno = EINVAL;	1002	errno = EINVAL;
1297	if (!rel)	1003	if (!rel)
1298	return;	1004	return -1;
1299		1005
1300	errno = ENOENT;	1006	errno = ENOENT;
1301	if (!*rel)	1007	if (!*rel)
1302	return;	1008	return -1;
1303		1009
1304	if (!req->ptr2)	1010	res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
1305	{	1011	#ifdef _WIN32
1306	X_LOCK (wrklock);	1012	if (_access (rel, 4) != 0)
1307	req->flags |= EIO_FLAG_PTR2_FREE;
1308	X_UNLOCK (wrklock);
1309	req->ptr2 = malloc (PATH_MAX * 3);
1310
1311	errno = ENOMEM;
1312	if (!req->ptr2)
1313	return;	1013	return -1;
1314	}
1315		1014
1316	res = req->ptr2;	1015	symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0);
		1016
		1017	errno = ENAMETOOLONG;
		1018	if (symlinks >= EIO_PATH_MAX * 3)
		1019	return -1;
		1020
		1021	errno = EIO;
		1022	if (symlinks <= 0)
		1023	return -1;
		1024
		1025	return symlinks;
		1026
		1027	#else
1317	tmp1 = res + PATH_MAX;	1028	tmp1 = res + EIO_PATH_MAX;
1318	tmp2 = tmp1 + PATH_MAX;	1029	tmp2 = tmp1 + EIO_PATH_MAX;
1319		1030
1320	#if 0 /* disabled, the musl way to do things is just too racy */	1031	#if 0 /* disabled, the musl way to do things is just too racy */
1321	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1032	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1322	/* on linux we may be able to ask the kernel */	1033	/* on linux we may be able to ask the kernel */
1323	{	1034	{
1324	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);	1035	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1325		1036
1326	if (fd >= 0)	1037	if (fd >= 0)
1327	{	1038	{
1328	sprintf (tmp1, "/proc/self/fd/%d", fd);	1039	sprintf (tmp1, "/proc/self/fd/%d", fd);
1329	req->result = readlink (tmp1, res, PATH_MAX);	1040	req->result = readlink (tmp1, res, EIO_PATH_MAX);
1330	close (fd);
1331
1332	/* here we should probably stat the open file and the disk file, to make sure they still match */	1041	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1042	eio__close (fd);
1333		1043
1334	if (req->result > 0)	1044	if (req->result > 0)
1335	goto done;	1045	goto done;
1336	}	1046	}
1337	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)	1047	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1338	return;	1048	return -1;
1339	}	1049	}
1340	#endif	1050	#endif
1341	#endif	1051	#endif
1342		1052
1343	if (*rel != '/')	1053	if (*rel != '/')
1344	{	1054	{
1345	if (!getcwd (res, PATH_MAX))	1055	int len;
		1056
		1057	errno = ENOENT;
		1058	if (wd == EIO_INVALID_WD)
1346	return;	1059	return -1;
		1060
		1061	if (wd == EIO_CWD)
		1062	{
		1063	if (!getcwd (res, EIO_PATH_MAX))
		1064	return -1;
		1065
		1066	len = strlen (res);
		1067	}
		1068	else
		1069	memcpy (res, wd->str, len = wd->len);
1347		1070
1348	if (res [1]) /* only use if not / */	1071	if (res [1]) /* only use if not / */
1349	res += strlen (res);	1072	res += len;
1350	}	1073	}
1351		1074
1352	while (*rel)	1075	while (*rel)
1353	{	1076	{
1354	eio_ssize_t len, linklen;	1077	eio_ssize_t len, linklen;
1355	char *beg = rel;	1078	const char *beg = rel;
1356		1079
1357	while (*rel && *rel != '/')	1080	while (*rel && *rel != '/')
1358	++rel;	1081	++rel;
1359		1082
1360	len = rel - beg;	1083	len = rel - beg;
…		…
1372		1095
1373	if (beg [1] == '.' && len == 2)	1096	if (beg [1] == '.' && len == 2)
1374	{	1097	{
1375	/* .. - back up one component, if possible */	1098	/* .. - back up one component, if possible */
1376		1099
1377	while (res != req->ptr2)	1100	while (res != tmpbuf->ptr)
1378	if (*--res == '/')	1101	if (*--res == '/')
1379	break;	1102	break;
1380		1103
1381	continue;	1104	continue;
1382	}	1105	}
1383	}	1106	}
1384		1107
1385	errno = ENAMETOOLONG;	1108	errno = ENAMETOOLONG;
1386	if (res + 1 + len + 1 >= tmp1)	1109	if (res + 1 + len + 1 >= tmp1)
1387	return;	1110	return -1;
1388		1111
1389	/* copy one component */	1112	/* copy one component */
1390	*res = '/';	1113	*res = '/';
1391	memcpy (res + 1, beg, len);	1114	memcpy (res + 1, beg, len);
1392		1115
1393	/* zero-terminate, for readlink */	1116	/* zero-terminate, for readlink */
1394	res [len + 1] = 0;	1117	res [len + 1] = 0;
1395		1118
1396	/* now check if it's a symlink */	1119	/* now check if it's a symlink */
1397	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1120	linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1398		1121
1399	if (linklen < 0)	1122	if (linklen < 0)
1400	{	1123	{
1401	if (errno != EINVAL)	1124	if (errno != EINVAL)
1402	return;	1125	return -1;
1403		1126
1404	/* it's a normal directory. hopefully */	1127	/* it's a normal directory. hopefully */
1405	res += len + 1;	1128	res += len + 1;
1406	}	1129	}
1407	else	1130	else
1408	{	1131	{
1409	/* yay, it was a symlink - build new path in tmp2 */	1132	/* yay, it was a symlink - build new path in tmp2 */
1410	int rellen = strlen (rel);	1133	int rellen = strlen (rel);
1411		1134
1412	errno = ENAMETOOLONG;	1135	errno = ENAMETOOLONG;
1413	if (linklen + 1 + rellen >= PATH_MAX)	1136	if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1414	return;	1137	return -1;
1415		1138
1416	errno = ELOOP;	1139	errno = ELOOP;
1417	if (!--symlinks)	1140	if (!--symlinks)
1418	return;	1141	return -1;
1419		1142
1420	if (*tmp1 == '/')	1143	if (*tmp1 == '/')
1421	res = req->ptr2; /* symlink resolves to an absolute path */	1144	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1422		1145
1423	/* we need to be careful, as rel might point into tmp2 already */	1146	/* we need to be careful, as rel might point into tmp2 already */
1424	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1147	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1425	tmp2 [linklen] = '/';	1148	tmp2 [linklen] = '/';
1426	memcpy (tmp2, tmp1, linklen);	1149	memcpy (tmp2, tmp1, linklen);
…		…
1428	rel = tmp2;	1151	rel = tmp2;
1429	}	1152	}
1430	}	1153	}
1431		1154
1432	/* special case for the lone root path */	1155	/* special case for the lone root path */
1433	if (res == req->ptr2)	1156	if (res == tmpbuf->ptr)
1434	*res++ = '/';	1157	*res++ = '/';
1435		1158
1436	req->result = res - (char *)req->ptr2;	1159	return res - (char *)tmpbuf->ptr;
1437		1160	#endif
1438	done:
1439	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1440	}	1161	}
1441		1162
1442	static signed char	1163	static signed char
1443	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1164	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1444	{	1165	{
…		…
1632	#ifdef _WIN32	1353	#ifdef _WIN32
1633	{	1354	{
1634	int len = strlen ((const char *)req->ptr1);	1355	int len = strlen ((const char *)req->ptr1);
1635	char *path = malloc (MAX_PATH);	1356	char *path = malloc (MAX_PATH);
1636	const char *fmt;	1357	const char *fmt;
		1358	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1637		1359
1638	if (!len)	1360	if (!len)
1639	fmt = "./*";	1361	fmt = "./*";
1640	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')	1362	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1641	fmt = "%s*";	1363	fmt = "%s*";
1642	else	1364	else
1643	fmt = "%s/*";	1365	fmt = "%s/*";
1644		1366
1645	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);	1367	_snprintf (path, MAX_PATH, fmt, reqpath);
1646	dirp = FindFirstFile (path, &entp);	1368	dirp = FindFirstFile (path, &entp);
1647	free (path);	1369	free (path);
1648		1370
1649	if (dirp == INVALID_HANDLE_VALUE)	1371	if (dirp == INVALID_HANDLE_VALUE)
1650	{	1372	{
1651	dirp = 0;	1373	/* should steal _dosmaperr */
1652
1653	switch (GetLastError ())	1374	switch (GetLastError ())
1654	{	1375	{
1655	case ERROR_FILE_NOT_FOUND:	1376	case ERROR_FILE_NOT_FOUND:
1656	req->result = 0;	1377	req->result = 0;
1657	break;	1378	break;
1658		1379
1659	case ERROR_INVALID_NAME:	1380	case ERROR_INVALID_NAME:
1660	case ERROR_PATH_NOT_FOUND:	1381	case ERROR_PATH_NOT_FOUND:
1661	case ERROR_NO_MORE_FILES:	1382	case ERROR_NO_MORE_FILES:
1662	errno = ENOENT;	1383	errno = ENOENT;
1663	break;	1384	break;
1664		1385
1665	case ERROR_NOT_ENOUGH_MEMORY:	1386	case ERROR_NOT_ENOUGH_MEMORY:
1666	errno = ENOMEM;	1387	errno = ENOMEM;
1667	break;	1388	break;
1668		1389
1669	default:	1390	default:
1670	errno = EINVAL;	1391	errno = EINVAL;
1671	break;	1392	break;
1672	}	1393	}
		1394
		1395	return;
1673	}	1396	}
1674	}	1397	}
1675	#else	1398	#else
		1399	#if HAVE_AT
		1400	if (req->wd)
		1401	{
		1402	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1403
		1404	if (fd < 0)
		1405	return;
		1406
		1407	dirp = fdopendir (fd);
		1408
		1409	if (!dirp)
		1410	silent_close (fd);
		1411	}
		1412	else
1676	dirp = opendir (req->ptr1);	1413	dirp = opendir (req->ptr1);
		1414	#else
		1415	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1416	#endif
		1417
		1418	if (!dirp)
		1419	return;
1677	#endif	1420	#endif
1678		1421
1679	if (req->flags & EIO_FLAG_PTR1_FREE)	1422	if (req->flags & EIO_FLAG_PTR1_FREE)
1680	free (req->ptr1);	1423	free (req->ptr1);
1681		1424
1682	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1425	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1683	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1426	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1684	req->ptr2 = names = malloc (namesalloc);	1427	req->ptr2 = names = malloc (namesalloc);
1685		1428
1686	if (dirp && names && (!flags || dents))	1429	if (!names || (flags && !dents))
		1430	return;
		1431
1687	for (;;)	1432	for (;;)
1688	{	1433	{
1689	int done;	1434	int done;
1690		1435
1691	#ifdef _WIN32	1436	#ifdef _WIN32
1692	done = !dirp;	1437	done = !dirp;
1693	#else	1438	#else
1694	errno = 0;	1439	errno = 0;
1695	entp = readdir (dirp);	1440	entp = readdir (dirp);
1696	done = !entp;	1441	done = !entp;
1697	#endif	1442	#endif
1698		1443
1699	if (done)	1444	if (done)
1700	{	1445	{
1701	#ifndef _WIN32	1446	#ifndef _WIN32
1702	int old_errno = errno;	1447	int old_errno = errno;
1703	closedir (dirp);	1448	closedir (dirp);
1704	errno = old_errno;	1449	errno = old_errno;
1705		1450
1706	if (errno)	1451	if (errno)
1707	break;	1452	break;
1708	#endif	1453	#endif
1709		1454
1710	/* sort etc. */	1455	/* sort etc. */
1711	req->int1 = flags;	1456	req->int1 = flags;
1712	req->result = dentoffs;	1457	req->result = dentoffs;
1713		1458
1714	if (flags & EIO_READDIR_STAT_ORDER)	1459	if (flags & EIO_READDIR_STAT_ORDER)
1715	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);	1460	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1716	else if (flags & EIO_READDIR_DIRS_FIRST)	1461	else if (flags & EIO_READDIR_DIRS_FIRST)
1717	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1462	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1718	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1463	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1719	else	1464	else
		1465	{
		1466	/* in this case, all is known, and we just put dirs first and sort them */
		1467	eio_dirent *oth = dents + dentoffs;
		1468	eio_dirent *dir = dents;
		1469
		1470	/* now partition dirs to the front, and non-dirs to the back */
		1471	/* by walking from both sides and swapping if necessary */
		1472	while (oth > dir)
		1473	{
		1474	if (dir->type == EIO_DT_DIR)
		1475	++dir;
		1476	else if ((--oth)->type == EIO_DT_DIR)
		1477	{
		1478	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1479
		1480	++dir;
		1481	}
		1482	}
		1483
		1484	/* now sort the dirs only (dirs all have the same score) */
		1485	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1486	}
		1487
		1488	break;
		1489	}
		1490
		1491	/* now add the entry to our list(s) */
		1492	name = D_NAME (entp);
		1493
		1494	/* skip . and .. entries */
		1495	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1496	{
		1497	int len = D_NAMLEN (entp) + 1;
		1498
		1499	while (ecb_expect_false (namesoffs + len > namesalloc))
		1500	{
		1501	namesalloc *= 2;
		1502	req->ptr2 = names = realloc (names, namesalloc);
		1503
		1504	if (!names)
		1505	break;
		1506	}
		1507
		1508	memcpy (names + namesoffs, name, len);
		1509
		1510	if (dents)
		1511	{
		1512	struct eio_dirent *ent;
		1513
		1514	if (ecb_expect_false (dentoffs == dentalloc))
1720	{	1515	{
1721	/* in this case, all is known, and we just put dirs first and sort them */	1516	dentalloc *= 2;
		1517	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1518
		1519	if (!dents)
		1520	break;
		1521	}
		1522
1722	eio_dirent *oth = dents + dentoffs;	1523	ent = dents + dentoffs;
1723	eio_dirent *dir = dents;
1724		1524
1725	/* now partition dirs to the front, and non-dirs to the back */	1525	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1726	/* by walking from both sides and swapping if necessary */	1526	ent->namelen = len - 1;
1727	while (oth > dir)	1527	ent->inode = D_INO (entp);
		1528
		1529	inode_bits |= ent->inode;
		1530
		1531	switch (D_TYPE (entp))
		1532	{
		1533	default:
		1534	ent->type = EIO_DT_UNKNOWN;
		1535	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1536	break;
		1537
		1538	#ifdef DT_FIFO
		1539	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1540	#endif
		1541	#ifdef DT_CHR
		1542	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1543	#endif
		1544	#ifdef DT_MPC
		1545	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1546	#endif
		1547	#ifdef DT_DIR
		1548	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1549	#endif
		1550	#ifdef DT_NAM
		1551	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1552	#endif
		1553	#ifdef DT_BLK
		1554	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1555	#endif
		1556	#ifdef DT_MPB
		1557	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1558	#endif
		1559	#ifdef DT_REG
		1560	case DT_REG: ent->type = EIO_DT_REG; break;
		1561	#endif
		1562	#ifdef DT_NWK
		1563	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1564	#endif
		1565	#ifdef DT_CMP
		1566	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1567	#endif
		1568	#ifdef DT_LNK
		1569	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1570	#endif
		1571	#ifdef DT_SOCK
		1572	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1573	#endif
		1574	#ifdef DT_DOOR
		1575	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1576	#endif
		1577	#ifdef DT_WHT
		1578	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1579	#endif
		1580	}
		1581
		1582	ent->score = 7;
		1583
		1584	if (flags & EIO_READDIR_DIRS_FIRST)
		1585	{
		1586	if (ent->type == EIO_DT_UNKNOWN)
1728	{	1587	{
1729	if (dir->type == EIO_DT_DIR)	1588	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1730	++dir;	1589	ent->score = 1;
1731	else if ((--oth)->type == EIO_DT_DIR)	1590	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1732	{	1591	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1733	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1734
1735	++dir;
1736	}
1737	}	1592	}
1738		1593	else if (ent->type == EIO_DT_DIR)
1739	/* now sort the dirs only (dirs all have the same score) */	1594	ent->score = 0;
1740	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1741	}	1595	}
1742
1743	break;
1744	}
1745
1746	/* now add the entry to our list(s) */
1747	name = D_NAME (entp);
1748
1749	/* skip . and .. entries */
1750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1751	{
1752	int len = D_NAMLEN (entp) + 1;
1753
1754	while (ecb_expect_false (namesoffs + len > namesalloc))
1755	{
1756	namesalloc *= 2;
1757	req->ptr2 = names = realloc (names, namesalloc);
1758
1759	if (!names)
1760	break;
1761	}	1596	}
1762		1597
1763	memcpy (names + namesoffs, name, len);
1764
1765	if (dents)
1766	{
1767	struct eio_dirent *ent;
1768
1769	if (ecb_expect_false (dentoffs == dentalloc))
1770	{
1771	dentalloc *= 2;
1772	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1773
1774	if (!dents)
1775	break;
1776	}
1777
1778	ent = dents + dentoffs;
1779
1780	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1781	ent->namelen = len - 1;
1782	ent->inode = D_INO (entp);
1783
1784	inode_bits |= ent->inode;
1785
1786	switch (D_TYPE (entp))
1787	{
1788	default:
1789	ent->type = EIO_DT_UNKNOWN;
1790	flags |= EIO_READDIR_FOUND_UNKNOWN;
1791	break;
1792
1793	#ifdef DT_FIFO
1794	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1795	#endif
1796	#ifdef DT_CHR
1797	case DT_CHR: ent->type = EIO_DT_CHR; break;
1798	#endif
1799	#ifdef DT_MPC
1800	case DT_MPC: ent->type = EIO_DT_MPC; break;
1801	#endif
1802	#ifdef DT_DIR
1803	case DT_DIR: ent->type = EIO_DT_DIR; break;
1804	#endif
1805	#ifdef DT_NAM
1806	case DT_NAM: ent->type = EIO_DT_NAM; break;
1807	#endif
1808	#ifdef DT_BLK
1809	case DT_BLK: ent->type = EIO_DT_BLK; break;
1810	#endif
1811	#ifdef DT_MPB
1812	case DT_MPB: ent->type = EIO_DT_MPB; break;
1813	#endif
1814	#ifdef DT_REG
1815	case DT_REG: ent->type = EIO_DT_REG; break;
1816	#endif
1817	#ifdef DT_NWK
1818	case DT_NWK: ent->type = EIO_DT_NWK; break;
1819	#endif
1820	#ifdef DT_CMP
1821	case DT_CMP: ent->type = EIO_DT_CMP; break;
1822	#endif
1823	#ifdef DT_LNK
1824	case DT_LNK: ent->type = EIO_DT_LNK; break;
1825	#endif
1826	#ifdef DT_SOCK
1827	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1828	#endif
1829	#ifdef DT_DOOR
1830	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1831	#endif
1832	#ifdef DT_WHT
1833	case DT_WHT: ent->type = EIO_DT_WHT; break;
1834	#endif
1835	}
1836
1837	ent->score = 7;
1838
1839	if (flags & EIO_READDIR_DIRS_FIRST)
1840	{
1841	if (ent->type == EIO_DT_UNKNOWN)
1842	{
1843	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1844	ent->score = 1;
1845	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1846	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1847	}
1848	else if (ent->type == EIO_DT_DIR)
1849	ent->score = 0;
1850	}
1851	}
1852
1853	namesoffs += len;	1598	namesoffs += len;
1854	++dentoffs;	1599	++dentoffs;
1855	}	1600	}
1856		1601
1857	if (EIO_CANCELLED (req))	1602	if (EIO_CANCELLED (req))
1858	{	1603	{
1859	errno = ECANCELED;	1604	errno = ECANCELED;
1860	break;	1605	break;
1861	}	1606	}
1862		1607
1863	#ifdef _WIN32	1608	#ifdef _WIN32
1864	if (!FindNextFile (dirp, &entp))	1609	if (!FindNextFile (dirp, &entp))
1865	{	1610	{
1866	FindClose (dirp);	1611	FindClose (dirp);
1867	dirp = 0;	1612	dirp = 0;
1868	}	1613	}
1869	#endif	1614	#endif
1870	}	1615	}
1871	}	1616	}
		1617
		1618	/*****************************************************************************/
		1619	/* working directory stuff */
		1620	/* various deficiencies in the posix 2008 api force us to */
		1621	/* keep the absolute path in string form at all times */
		1622	/* fuck yeah. */
		1623
		1624	#if !HAVE_AT
		1625
		1626	/* a bit like realpath, but usually faster because it doesn'T have to return */
		1627	/* an absolute or canonical path */
		1628	static const char *
		1629	wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1630	{
		1631	if (!wd || *path == '/')
		1632	return path;
		1633
		1634	if (path [0] == '.' && !path [1])
		1635	return wd->str;
		1636
		1637	{
		1638	int l1 = wd->len;
		1639	int l2 = strlen (path);
		1640
		1641	char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
		1642
		1643	memcpy (res, wd->str, l1);
		1644	res [l1] = '/';
		1645	memcpy (res + l1 + 1, path, l2 + 1);
		1646
		1647	return res;
		1648	}
		1649	}
		1650
		1651	#endif
		1652
		1653	static eio_wd
		1654	eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1655	{
		1656	int fd;
		1657	eio_wd res;
		1658	int len = eio__realpath (tmpbuf, wd, path);
		1659
		1660	if (len < 0)
		1661	return EIO_INVALID_WD;
		1662
		1663	#if HAVE_AT
		1664	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1665
		1666	if (fd < 0)
		1667	return EIO_INVALID_WD;
		1668	#endif
		1669
		1670	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		1671
		1672	#if HAVE_AT
		1673	res->fd = fd;
		1674	#endif
		1675
		1676	res->len = len;
		1677	memcpy (res->str, tmpbuf->ptr, len);
		1678	res->str [len] = 0;
		1679
		1680	return res;
		1681	}
		1682
		1683	eio_wd
		1684	eio_wd_open_sync (eio_wd wd, const char *path)
		1685	{
		1686	struct etp_tmpbuf tmpbuf = { };
		1687	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		1688	free (tmpbuf.ptr);
		1689
		1690	return wd;
		1691	}
		1692
		1693	void
		1694	eio_wd_close_sync (eio_wd wd)
		1695	{
		1696	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		1697	{
		1698	#if HAVE_AT
		1699	eio__close (wd->fd);
		1700	#endif
		1701	free (wd);
		1702	}
		1703	}
		1704
		1705	#if HAVE_AT
		1706
		1707	static int
		1708	eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags)
		1709	{
		1710	#if HAVE_RENAMEAT2
		1711	return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags);
		1712	#else
		1713	if (flags)
		1714	return EIO_ENOSYS ();
		1715
		1716	return renameat (olddirfd, oldpath, newdirfd, newpath);
		1717	#endif
		1718	}
		1719
		1720	/* they forgot these */
		1721
		1722	static int
		1723	eio__truncateat (int dirfd, const char *path, off_t length)
		1724	{
		1725	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		1726	int res;
		1727
		1728	if (fd < 0)
		1729	return fd;
		1730
		1731	res = ftruncate (fd, length);
		1732	silent_close (fd);
		1733	return res;
		1734	}
		1735
		1736	static int
		1737	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		1738	{
		1739	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		1740	int res;
		1741
		1742	if (fd < 0)
		1743	return fd;
		1744
		1745	res = fstatvfs (fd, buf);
		1746	silent_close (fd);
		1747	return res;
		1748	}
		1749
		1750	#endif
1872		1751
1873	/*****************************************************************************/	1752	/*****************************************************************************/
1874		1753
1875	#define ALLOC(len) \	1754	#define ALLOC(len) \
1876	if (!req->ptr2) \	1755	if (!req->ptr2) \
1877	{ \	1756	{ \
1878	X_LOCK (wrklock); \	1757	X_LOCK (EIO_POOL->wrklock); \
1879	req->flags |= EIO_FLAG_PTR2_FREE; \	1758	req->flags |= EIO_FLAG_PTR2_FREE; \
1880	X_UNLOCK (wrklock); \	1759	X_UNLOCK (EIO_POOL->wrklock); \
1881	req->ptr2 = malloc (len); \	1760	req->ptr2 = malloc (len); \
1882	if (!req->ptr2) \	1761	if (!req->ptr2) \
1883	{ \	1762	{ \
1884	errno = ENOMEM; \	1763	errno = ENOMEM; \
1885	req->result = -1; \	1764	req->result = -1; \
1886	break; \	1765	goto alloc_fail; \
1887	} \	1766	} \
1888	}	1767	}
1889		1768
1890	X_THREAD_PROC (etp_proc)	1769	/*****************************************************************************/
1891	{
1892	ETP_REQ *req;
1893	struct timespec ts;
1894	etp_worker *self = (etp_worker *)thr_arg;
1895		1770
1896	/* try to distribute timeouts somewhat evenly */	1771	static void
1897	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	1772	eio__slurp (int fd, eio_req *req)
		1773	{
		1774	req->result = fd;
1898		1775
1899	for (;;)	1776	if (fd < 0)
		1777	return;
		1778
		1779	if (req->offs < 0 || !req->size) /* do we need the size? */
1900	{	1780	{
1901	ts.tv_sec = 0;	1781	off_t size = lseek (fd, 0, SEEK_END);
1902		1782
1903	X_LOCK (reqlock);
1904
1905	for (;;)
1906	{
1907	self->req = req = reqq_shift (&req_queue);
1908
1909	if (req)
1910	break;
1911
1912	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
1913	{
1914	X_UNLOCK (reqlock);
1915	X_LOCK (wrklock);
1916	--started;
1917	X_UNLOCK (wrklock);
1918	goto quit;
1919	}
1920
1921	++idle;
1922
1923	if (idle <= max_idle)
1924	/* we are allowed to idle, so do so without any timeout */
1925	X_COND_WAIT (reqwait, reqlock);
1926	else
1927	{
1928	/* initialise timeout once */
1929	if (!ts.tv_sec)
1930	ts.tv_sec = time (0) + idle_timeout;
1931
1932	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1933	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1934	}
1935
1936	--idle;
1937	}
1938
1939	--nready;
1940
1941	X_UNLOCK (reqlock);
1942
1943	if (req->type < 0)	1783	if (req->offs < 0)
1944	goto quit;	1784	req->offs += size;
1945		1785
1946	ETP_EXECUTE (self, req);	1786	if (!req->size)
1947		1787	req->size = size - req->offs;
1948	X_LOCK (reslock);
1949
1950	++npending;
1951
1952	if (!reqq_push (&res_queue, req) && want_poll_cb)
1953	want_poll_cb ();
1954
1955	self->req = 0;
1956	etp_worker_clear (self);
1957
1958	X_UNLOCK (reslock);
1959	}	1788	}
1960		1789
1961	quit:	1790	ALLOC (req->size);
1962	X_LOCK (wrklock);	1791	req->result = pread (fd, req->ptr2, req->size, req->offs);
1963	etp_worker_free (self);
1964	X_UNLOCK (wrklock);
1965		1792
1966	return 0;	1793	silent_close (fd);
1967	}
1968		1794
1969	/*****************************************************************************/	1795	alloc_fail:
		1796	;
		1797	}
1970		1798
1971	int ecb_cold	1799	int ecb_cold
1972	eio_init (void (*want_poll)(void), void (*done_poll)(void))	1800	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1973	{	1801	{
1974	#if !HAVE_PREADWRITE	1802	eio_want_poll_cb = want_poll;
1975	X_MUTEX_CREATE (preadwritelock);	1803	eio_done_poll_cb = done_poll;
1976	#endif
1977		1804
1978	return etp_init (want_poll, done_poll);	1805	return etp_init (EIO_POOL, 0, 0, 0);
1979	}	1806	}
1980		1807
1981	ecb_inline void	1808	ecb_inline void
1982	eio_api_destroy (eio_req *req)	1809	eio_api_destroy (eio_req *req)
1983	{	1810	{
1984	free (req);	1811	free (req);
1985	}	1812	}
1986		1813
1987	#define REQ(rtype) \	1814	#define REQ(rtype) \
1988	eio_req *req; \	1815	eio_req *req; \
1989	\	1816	\
1990	req = (eio_req *)calloc (1, sizeof *req); \	1817	req = (eio_req *)calloc (1, sizeof *req); \
1991	if (!req) \	1818	if (!req) \
1992	return 0; \	1819	return 0; \
…		…
2006	{ \	1833	{ \
2007	eio_api_destroy (req); \	1834	eio_api_destroy (req); \
2008	return 0; \	1835	return 0; \
2009	}	1836	}
2010		1837
		1838	#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
		1839
2011	static void	1840	static void
2012	eio_execute (etp_worker *self, eio_req *req)	1841	eio_execute (etp_worker *self, eio_req *req)
2013	{	1842	{
		1843	#if HAVE_AT
		1844	int dirfd;
		1845	#else
		1846	const char *path;
		1847	#endif
		1848
2014	if (ecb_expect_false (EIO_CANCELLED (req)))	1849	if (ecb_expect_false (EIO_CANCELLED (req)))
2015	{	1850	{
2016	req->result = -1;	1851	req->result = -1;
2017	req->errorno = ECANCELED;	1852	req->errorno = ECANCELED;
2018	return;	1853	return;
2019	}	1854	}
2020		1855
		1856	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		1857	{
		1858	req->result = -1;
		1859	req->errorno = ENOENT;
		1860	return;
		1861	}
		1862
		1863	if (req->type >= EIO_OPEN)
		1864	{
		1865	#if HAVE_AT
		1866	dirfd = WD2FD (req->wd);
		1867	#else
		1868	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		1869	#endif
		1870	}
		1871
2021	switch (req->type)	1872	switch (req->type)
2022	{	1873	{
		1874	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		1875	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		1876	break;
		1877	case EIO_WD_CLOSE: req->result = 0;
		1878	eio_wd_close_sync (req->wd); break;
		1879
		1880	case EIO_SEEK: eio__lseek (req); break;
2023	case EIO_READ: ALLOC (req->size);	1881	case EIO_READ: ALLOC (req->size);
2024	req->result = req->offs >= 0	1882	req->result = req->offs >= 0
2025	? pread (req->int1, req->ptr2, req->size, req->offs)	1883	? pread (req->int1, req->ptr2, req->size, req->offs)
2026	: read (req->int1, req->ptr2, req->size); break;	1884	: read (req->int1, req->ptr2, req->size); break;
2027	case EIO_WRITE: req->result = req->offs >= 0	1885	case EIO_WRITE: req->result = req->offs >= 0
2028	? pwrite (req->int1, req->ptr2, req->size, req->offs)	1886	? pwrite (req->int1, req->ptr2, req->size, req->offs)
2029	: write (req->int1, req->ptr2, req->size); break;	1887	: write (req->int1, req->ptr2, req->size); break;
2030		1888
		1889	case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
		1890	case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
		1891
2031	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1892	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
2032	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;	1893	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
2033		1894
		1895	#if HAVE_AT
		1896
2034	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1897	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2035	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1898	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2036	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1899	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1900	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		1901	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		1902	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		1903	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		1904	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		1905	case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break;
		1906
		1907	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		1908	case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
		1909	req->result = req->wd && SINGLEDOT (req->ptr1)
		1910	? rmdir (req->wd->str)
		1911	: unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		1912	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		1913	case EIO_RENAME: req->result = eio__renameat2 (
		1914	dirfd,
		1915	/* complications arise because "." cannot be renamed, so we might have to expand */
		1916	req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1,
		1917	WD2FD ((eio_wd)req->int3),
		1918	req->ptr2,
		1919	req->int2
		1920	);
		1921	break;
		1922	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		1923	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		1924	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		1925	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1926	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1927	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1928	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX);
		1929	if (req->result == EIO_PATH_MAX)
		1930	{
		1931	req->result = -1;
		1932	errno = ENAMETOOLONG;
		1933	}
		1934	break;
		1935	case EIO_UTIME:
		1936	case EIO_FUTIME:
		1937	{
		1938	struct timespec ts[2];
		1939	struct timespec *times;
		1940
		1941	if (req->nv1 != -1. || req->nv2 != -1.)
		1942	{
		1943	ts[0].tv_sec = req->nv1;
		1944	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		1945	ts[1].tv_sec = req->nv2;
		1946	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		1947
		1948	times = ts;
		1949	}
		1950	else
		1951	times = 0;
		1952
		1953	req->result = req->type == EIO_FUTIME
		1954	? futimens (req->int1, times)
		1955	: utimensat (dirfd, req->ptr1, times, 0);
		1956	}
		1957	break;
		1958
		1959	#else
		1960
		1961	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1962	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1963	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2037	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1964	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		1965	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		1966	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		1967	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		1968	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		1969	case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break;
		1970
		1971	case EIO_UNLINK: req->result = unlink (path ); break;
		1972	case EIO_RMDIR: req->result = rmdir (path ); break;
		1973	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		1974	case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break;
		1975	case EIO_LINK: req->result = link (path , req->ptr2); break;
		1976	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		1977	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		1978	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1979	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1980	case EIO_READLINK: ALLOC (EIO_PATH_MAX);
		1981	req->result = readlink (path, req->ptr2, EIO_PATH_MAX);
		1982	if (req->result == EIO_PATH_MAX)
		1983	{
		1984	req->result = -1;
		1985	errno = ENAMETOOLONG;
		1986	}
		1987	break;
		1988
		1989	case EIO_UTIME:
		1990	case EIO_FUTIME:
		1991	{
		1992	struct timeval tv[2];
		1993	struct timeval *times;
		1994
		1995	if (req->nv1 != -1. || req->nv2 != -1.)
		1996	{
		1997	tv[0].tv_sec = req->nv1;
		1998	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		1999	tv[1].tv_sec = req->nv2;
		2000	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		2001
		2002	times = tv;
		2003	}
		2004	else
		2005	times = 0;
		2006
		2007	req->result = req->type == EIO_FUTIME
		2008	? futimes (req->int1, times)
		2009	: utimes (req->ptr1, times);
		2010	}
		2011	break;
		2012
		2013	#endif
		2014
		2015	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		2016	{
		2017	ALLOC (req->result);
		2018	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		2019	}
		2020	break;
		2021
2038	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2022	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2039	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2023	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2040		2024
2041	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2042	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2043	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	2025	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2044	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	2026	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2045		2027
2046	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2047	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2028	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2048	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2049	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2029	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2050	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2051	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2030	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2052		2031
2053	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2054	case EIO_CLOSE: req->result = close (req->int1); break;	2032	case EIO_CLOSE: req->result = eio__close (req->int1); break;
2055	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2033	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2056	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2057	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2058	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2059	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2060	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2061	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2062	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2063
2064	case EIO_REALPATH: eio__realpath (req, self); break;
2065
2066	case EIO_READLINK: ALLOC (PATH_MAX);
2067	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2068
2069	case EIO_SYNC: req->result = 0; sync (); break;	2034	case EIO_SYNC: req->result = 0; sync (); break;
2070	case EIO_FSYNC: req->result = fsync (req->int1); break;	2035	case EIO_FSYNC: req->result = fsync (req->int1); break;
2071	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2036	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2037	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2038	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2072	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2039	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2073	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	2040	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2074	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	2041	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2075	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	2042	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2076	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2077	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	2043	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2078		2044
2079	case EIO_READDIR: eio__scandir (req, self); break;	2045	case EIO_READDIR: eio__scandir (req, self); break;
2080		2046
2081	case EIO_BUSY:	2047	case EIO_BUSY:
…		…
2091	req->result = select (0, 0, 0, 0, &tv);	2057	req->result = select (0, 0, 0, 0, &tv);
2092	}	2058	}
2093	#endif	2059	#endif
2094	break;	2060	break;
2095		2061
2096	case EIO_UTIME:	2062	#if 0
2097	case EIO_FUTIME:
2098	{
2099	struct timeval tv[2];
2100	struct timeval *times;
2101
2102	if (req->nv1 != -1. || req->nv2 != -1.)
2103	{
2104	tv[0].tv_sec = req->nv1;
2105	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2106	tv[1].tv_sec = req->nv2;
2107	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2108
2109	times = tv;
2110	}
2111	else
2112	times = 0;
2113
2114	req->result = req->type == EIO_FUTIME
2115	? futimes (req->int1, times)
2116	: utimes (req->ptr1, times);
2117	}
2118	break;
2119
2120	case EIO_GROUP:	2063	case EIO_GROUP:
2121	abort (); /* handled in eio_request */	2064	abort (); /* handled in eio_request */
		2065	#endif
2122		2066
2123	case EIO_NOP:	2067	case EIO_NOP:
2124	req->result = 0;	2068	req->result = 0;
2125	break;	2069	break;
2126		2070
2127	case EIO_CUSTOM:	2071	case EIO_CUSTOM:
2128	req->feed (req);	2072	req->feed (req);
2129	break;	2073	break;
2130		2074
2131	default:	2075	default:
2132	errno = ENOSYS;
2133	req->result = -1;	2076	req->result = EIO_ENOSYS ();
2134	break;	2077	break;
2135	}	2078	}
2136		2079
		2080	alloc_fail:
2137	req->errorno = errno;	2081	req->errorno = errno;
2138	}	2082	}
2139		2083
2140	#ifndef EIO_NO_WRAPPERS	2084	#ifndef EIO_NO_WRAPPERS
2141		2085
		2086	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		2087	{
		2088	REQ (EIO_WD_OPEN); PATH; SEND;
		2089	}
		2090
		2091	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2092	{
		2093	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2094	}
		2095
2142	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2096	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2143	{	2097	{
2144	REQ (EIO_NOP); SEND;	2098	REQ (EIO_NOP); SEND;
2145	}	2099	}
2146		2100
…		…
2162	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2116	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2163	{	2117	{
2164	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2118	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2165	}	2119	}
2166		2120
		2121	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2122	{
		2123	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2124	}
		2125
		2126	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2127	{
		2128	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2129	}
		2130
		2131	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2132	{
		2133	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2134	}
		2135
2167	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2136	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2168	{	2137	{
2169	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2138	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2170	}	2139	}
2171		2140
…		…
2177	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2146	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2178	{	2147	{
2179	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2148	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2180	}	2149	}
2181		2150
2182	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2183	{
2184	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2185	}
2186
2187	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)	2151	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2188	{	2152	{
2189	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;	2153	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2190	}	2154	}
2191		2155
2192	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2193	{
2194	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2195	}
2196
2197	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2156	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2198	{	2157	{
2199	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2158	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2200	}	2159	}
2201		2160
2202	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2161	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2203	{	2162	{
2204	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2163	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
2205	}	2164	}
2206		2165
		2166	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2167	{
		2168	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
		2169	}
		2170
2207	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2171	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2208	{	2172	{
2209	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2173	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2210	}	2174	}
2211		2175
2212	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2176	eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2213	{	2177	{
2214	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2178	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2179	}
		2180
		2181	eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data)
		2182	{
		2183	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
		2184	}
		2185
		2186	eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data)
		2187	{
		2188	REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2215	}	2189	}
2216		2190
2217	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2191	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
2218	{	2192	{
2219	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2193	REQ (EIO_FSTAT); req->int1 = fd; SEND;
…		…
2364	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2338	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2365	{	2339	{
2366	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2340	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2367	}	2341	}
2368		2342
		2343	eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
		2344	{
		2345	REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		2346	}
		2347
2369	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)	2348	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
2370	{	2349	{
2371	REQ (EIO_CUSTOM); req->feed = execute; SEND;	2350	REQ (EIO_CUSTOM); req->feed = execute; SEND;
2372	}	2351	}
2373		2352
…		…
2407	void	2386	void
2408	eio_grp_add (eio_req *grp, eio_req *req)	2387	eio_grp_add (eio_req *grp, eio_req *req)
2409	{	2388	{
2410	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2389	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2411		2390
2412	grp->flags |= EIO_FLAG_GROUPADD;	2391	grp->flags |= ETP_FLAG_GROUPADD;
2413		2392
2414	++grp->size;	2393	++grp->size;
2415	req->grp = grp;	2394	req->grp = grp;
2416		2395
2417	req->grp_prev = 0;	2396	req->grp_prev = 0;

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