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Comparing libeio/eio.c (file contents):
Revision 1.48 by root, Sat Jan 2 14:11:32 2010 UTC vs.
Revision 1.106 by root, Mon Sep 26 20:19:08 2011 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 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	*
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
		40	#ifndef _WIN32
		41	# include "config.h"
		42	#endif
		43
40	#include "eio.h"	44	#include "eio.h"
		45	#include "ecb.h"
41		46
42	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
43	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define X_STACKSIZE EIO_STACKSIZE
44	#endif	49	#endif
45	#include "xthread.h"	50	#include "xthread.h"
46		51
47	#include <errno.h>	52	#include <errno.h>
48	#include <stddef.h>	53	#include <stddef.h>
…		…
53	#include <sys/stat.h>	58	#include <sys/stat.h>
54	#include <limits.h>	59	#include <limits.h>
55	#include <fcntl.h>	60	#include <fcntl.h>
56	#include <assert.h>	61	#include <assert.h>
57		62
		63	#if _POSIX_VERSION >= 200809L
		64	# define HAVE_AT 1
		65	#else
		66	# define HAVE_AT 0
		67	#endif
		68
		69	/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
		70	/* intptr_t only comes from stdint.h, says idiot openbsd coder */
		71	#if HAVE_STDINT_H
		72	# include <stdint.h>
		73	#endif
		74
		75	#ifndef ECANCELED
		76	# define ECANCELED EDOM
		77	#endif
		78	#ifndef ELOOP
		79	# define ELOOP EDOM
		80	#endif
		81
		82	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		83	# define ENOTSOCK WSAENOTSOCK
		84	#endif
		85
		86	static void eio_destroy (eio_req *req);
		87
58	#ifndef EIO_FINISH	88	#ifndef EIO_FINISH
59	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	89	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
60	#endif	90	#endif
61		91
62	#ifndef EIO_DESTROY	92	#ifndef EIO_DESTROY
…		…
65		95
66	#ifndef EIO_FEED	96	#ifndef EIO_FEED
67	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)	97	# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
68	#endif	98	#endif
69		99
		100	#ifndef EIO_FD_TO_WIN32_HANDLE
		101	# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		102	#endif
		103	#ifndef EIO_WIN32_HANDLE_TO_FD
		104	# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		105	#endif
		106
		107	#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
		108
		109	#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
		110
70	#ifdef _WIN32	111	#ifdef _WIN32
71		112
72	/*doh*/	113	#undef PAGESIZE
		114	#define PAGESIZE 4096 /* GetSystemInfo? */
		115
		116	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		117
		118	#ifdef EIO_STRUCT_STATI64
		119	/* look at perl's non-sloppy stat */
		120	#define stat(path,buf) _stati64 (path,buf)
		121	#define fstat(fd,buf) _fstati64 (fd,buf)
		122	#endif
		123	#define lstat(path,buf) stat (path,buf)
		124	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
		125	#define mkdir(path,mode) _mkdir (path)
		126	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
		127
		128	#define chmod(path,mode) _chmod (path, mode)
		129	#define dup(fd) _dup (fd)
		130	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		131
		132	#define fchmod(fd,mode) EIO_ENOSYS ()
		133	#define chown(path,uid,gid) EIO_ENOSYS ()
		134	#define fchown(fd,uid,gid) EIO_ENOSYS ()
		135	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
		136	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
		137	#define mknod(path,mode,dev) EIO_ENOSYS ()
		138	#define sync() EIO_ENOSYS ()
		139	#define readlink(path,buf,s) EIO_ENOSYS ()
		140	#define statvfs(path,buf) EIO_ENOSYS ()
		141	#define fstatvfs(fd,buf) EIO_ENOSYS ()
		142
		143	/* rename() uses MoveFile, which fails to overwrite */
		144	#define rename(old,neu) eio__rename (old, neu)
		145
		146	static int
		147	eio__rename (const char *old, const char *neu)
		148	{
		149	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		150	return 0;
		151
		152	/* should steal _dosmaperr */
		153	switch (GetLastError ())
		154	{
		155	case ERROR_FILE_NOT_FOUND:
		156	case ERROR_PATH_NOT_FOUND:
		157	case ERROR_INVALID_DRIVE:
		158	case ERROR_NO_MORE_FILES:
		159	case ERROR_BAD_NETPATH:
		160	case ERROR_BAD_NET_NAME:
		161	case ERROR_BAD_PATHNAME:
		162	case ERROR_FILENAME_EXCED_RANGE:
		163	errno = ENOENT;
		164	break;
		165
		166	default:
		167	errno = EACCES;
		168	break;
		169	}
		170
		171	return -1;
		172	}
		173
		174	/* we could even stat and see if it exists */
		175	static int
		176	symlink (const char *old, const char *neu)
		177	{
		178	#if WINVER >= 0x0600
		179	if (CreateSymbolicLink (neu, old, 1))
		180	return 0;
		181
		182	if (CreateSymbolicLink (neu, old, 0))
		183	return 0;
		184	#endif
		185
		186	return EIO_ERRNO (ENOENT, -1);
		187	}
		188
		189	/* POSIX API only */
		190	#define CreateHardLink(neu,old,flags) 0
		191	#define CreateSymbolicLink(neu,old,flags) 0
		192
		193	struct statvfs
		194	{
		195	int dummy;
		196	};
		197
		198	#define DT_DIR EIO_DT_DIR
		199	#define DT_REG EIO_DT_REG
		200	#define D_NAME(entp) entp.cFileName
		201	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
		202
73	#else	203	#else
74		204
75	# include "config.h"
76	# include <sys/time.h>	205	#include <sys/time.h>
77	# include <sys/select.h>	206	#include <sys/select.h>
78	# include <sys/mman.h>	207	#include <sys/statvfs.h>
79	# include <unistd.h>	208	#include <unistd.h>
		209	#include <signal.h>
		210	#include <dirent.h>
		211
		212	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		213	#include <sys/mman.h>
		214	#endif
		215
		216	#define D_NAME(entp) entp->d_name
		217
		218	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		219	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
		220	#define _DIRENT_HAVE_D_TYPE /* sigh */
		221	#define D_INO(de) (de)->d_fileno
		222	#define D_NAMLEN(de) (de)->d_namlen
		223	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
		224	#define D_INO(de) (de)->d_ino
		225	#endif
		226
		227	#ifdef _D_EXACT_NAMLEN
		228	#undef D_NAMLEN
		229	#define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		230	#endif
		231
		232	#ifdef _DIRENT_HAVE_D_TYPE
		233	#define D_TYPE(de) (de)->d_type
		234	#endif
		235
		236	#ifndef EIO_STRUCT_DIRENT
		237	#define EIO_STRUCT_DIRENT struct dirent
		238	#endif
		239
		240	#endif
		241
		242	#if HAVE_UTIMES
80	# include <utime.h>	243	# include <utime.h>
81	# include <signal.h>
82	# include <dirent.h>
83
84	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
85	# if __freebsd || defined __NetBSD__ || defined __OpenBSD__
86	# define _DIRENT_HAVE_D_TYPE /* sigh */
87	# define D_INO(de) (de)->d_fileno
88	# define D_NAMLEN(de) (de)->d_namlen
89	# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
90	# define D_INO(de) (de)->d_ino
91	# endif	244	#endif
92		245
93	#ifdef _D_EXACT_NAMLEN	246	#if HAVE_SYS_SYSCALL_H
94	# undef D_NAMLEN	247	# include <sys/syscall.h>
95	# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
96	#endif
97
98	# ifdef _DIRENT_HAVE_D_TYPE
99	# define D_TYPE(de) (de)->d_type
100	# endif	248	#endif
101		249
102	# ifndef EIO_STRUCT_DIRENT	250	#if HAVE_SYS_PRCTL_H
103	# define EIO_STRUCT_DIRENT struct dirent	251	# include <sys/prctl.h>
104	# endif
105
106	#endif	252	#endif
107		253
108	#if HAVE_SENDFILE	254	#if HAVE_SENDFILE
109	# if __linux	255	# if __linux
110	# include <sys/sendfile.h>	256	# include <sys/sendfile.h>
111	# elif __freebsd || defined __APPLE__	257	# elif __FreeBSD__ || defined __APPLE__
112	# include <sys/socket.h>	258	# include <sys/socket.h>
113	# include <sys/uio.h>	259	# include <sys/uio.h>
114	# elif __hpux	260	# elif __hpux
115	# include <sys/socket.h>	261	# include <sys/socket.h>
116	# elif __solaris	262	# elif __solaris
…		…
125	#endif	271	#endif
126	#ifndef D_INO	272	#ifndef D_INO
127	# define D_INO(de) 0	273	# define D_INO(de) 0
128	#endif	274	#endif
129	#ifndef D_NAMLEN	275	#ifndef D_NAMLEN
130	# define D_NAMLEN(de) strlen ((de)->d_name)	276	# define D_NAMLEN(entp) strlen (D_NAME (entp))
131	#endif	277	#endif
132
133	/* number of seconds after which an idle threads exit */
134	#define IDLE_TIMEOUT 10
135		278
136	/* used for struct dirent, AIX doesn't provide it */	279	/* used for struct dirent, AIX doesn't provide it */
137	#ifndef NAME_MAX	280	#ifndef NAME_MAX
138	# define NAME_MAX 4096	281	# define NAME_MAX 4096
139	#endif	282	#endif
140		283
		284	/* used for readlink etc. */
		285	#ifndef PATH_MAX
		286	# define PATH_MAX 4096
		287	#endif
		288
141	/* buffer size for various temporary buffers */	289	/* buffer size for various temporary buffers */
142	#define EIO_BUFSIZE 65536	290	#define EIO_BUFSIZE 65536
143		291
144	#define dBUF \	292	#define dBUF \
145	char *eio_buf; \
146	ETP_WORKER_LOCK (self); \
147	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	293	char *eio_buf = malloc (EIO_BUFSIZE); \
148	ETP_WORKER_UNLOCK (self); \
149	errno = ENOMEM; \	294	errno = ENOMEM; \
150	if (!eio_buf) \	295	if (!eio_buf) \
151	return -1;	296	return -1
		297
		298	#define FUBd \
		299	free (eio_buf)
152		300
153	#define EIO_TICKS ((1000000 + 1023) >> 10)	301	#define EIO_TICKS ((1000000 + 1023) >> 10)
154		302
155	/*****************************************************************************/	303	/*****************************************************************************/
156		304
157	#if __GNUC__ >= 3	305	struct tmpbuf
158	# define expect(expr,value) __builtin_expect ((expr),(value))	306	{
159	#else	307	void *ptr;
160	# define expect(expr,value) (expr)	308	int len;
161	#endif	309	};
162		310
163	#define expect_false(expr) expect ((expr) != 0, 0)	311	static void *
164	#define expect_true(expr) expect ((expr) != 0, 1)	312	tmpbuf_get (struct tmpbuf *buf, int len)
		313	{
		314	if (buf->len < len)
		315	{
		316	free (buf->ptr);
		317	buf->ptr = malloc (buf->len = len);
		318	}
		319
		320	return buf->ptr;
		321	}
165		322
166	/*****************************************************************************/	323	/*****************************************************************************/
167		324
168	#define ETP_PRI_MIN EIO_PRI_MIN	325	#define ETP_PRI_MIN EIO_PRI_MIN
169	#define ETP_PRI_MAX EIO_PRI_MAX	326	#define ETP_PRI_MAX EIO_PRI_MAX
…		…
175	static int eio_finish (eio_req *req);	332	static int eio_finish (eio_req *req);
176	#define ETP_FINISH(req) eio_finish (req)	333	#define ETP_FINISH(req) eio_finish (req)
177	static void eio_execute (struct etp_worker *self, eio_req *req);	334	static void eio_execute (struct etp_worker *self, eio_req *req);
178	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	335	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
179		336
180	#define ETP_WORKER_CLEAR(req) \
181	if (wrk->dbuf) \
182	{ \
183	free (wrk->dbuf); \
184	wrk->dbuf = 0; \
185	} \
186	\
187	if (wrk->dirp) \
188	{ \
189	closedir (wrk->dirp); \
190	wrk->dirp = 0; \
191	}
192
193	#define ETP_WORKER_COMMON \
194	void *dbuf; \
195	DIR *dirp;
196
197	/*****************************************************************************/	337	/*****************************************************************************/
198		338
199	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	339	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
200		340
201	/* calculate time difference in ~1/EIO_TICKS of a second */	341	/* calculate time difference in ~1/EIO_TICKS of a second */
		342	ecb_inline int
202	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	343	tvdiff (struct timeval *tv1, struct timeval *tv2)
203	{	344	{
204	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	345	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
205	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	346	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
206	}	347	}
207		348
…		…
211	static void (*done_poll_cb) (void);	352	static void (*done_poll_cb) (void);
212		353
213	static unsigned int max_poll_time; /* reslock */	354	static unsigned int max_poll_time; /* reslock */
214	static unsigned int max_poll_reqs; /* reslock */	355	static unsigned int max_poll_reqs; /* reslock */
215		356
216	static volatile unsigned int nreqs; /* reqlock */	357	static unsigned int nreqs; /* reqlock */
217	static volatile unsigned int nready; /* reqlock */	358	static unsigned int nready; /* reqlock */
218	static volatile unsigned int npending; /* reqlock */	359	static unsigned int npending; /* reqlock */
219	static volatile unsigned int max_idle = 4;	360	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		361	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
220		362
221	static mutex_t wrklock = X_MUTEX_INIT;	363	static xmutex_t wrklock;
222	static mutex_t reslock = X_MUTEX_INIT;	364	static xmutex_t reslock;
223	static mutex_t reqlock = X_MUTEX_INIT;	365	static xmutex_t reqlock;
224	static cond_t reqwait = X_COND_INIT;	366	static xcond_t reqwait;
225		367
226	#if !HAVE_PREADWRITE	368	#if !HAVE_PREADWRITE
227	/*	369	/*
228	* make our pread/pwrite emulation safe against themselves, but not against	370	* make our pread/pwrite emulation safe against themselves, but not against
229	* normal read/write by using a mutex. slows down execution a lot,	371	* normal read/write by using a mutex. slows down execution a lot,
230	* but that's your problem, not mine.	372	* but that's your problem, not mine.
231	*/	373	*/
232	static mutex_t preadwritelock = X_MUTEX_INIT;	374	static xmutex_t preadwritelock;
233	#endif	375	#endif
234		376
235	typedef struct etp_worker	377	typedef struct etp_worker
236	{	378	{
		379	struct tmpbuf tmpbuf;
		380
237	/* locked by wrklock */	381	/* locked by wrklock */
238	struct etp_worker *prev, *next;	382	struct etp_worker *prev, *next;
239		383
240	thread_t tid;	384	xthread_t tid;
241		385
242	/* locked by reslock, reqlock or wrklock */	386	#ifdef ETP_WORKER_COMMON
243	ETP_REQ *req; /* currently processed request */
244
245	ETP_WORKER_COMMON	387	ETP_WORKER_COMMON
		388	#endif
246	} etp_worker;	389	} etp_worker;
247		390
248	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	391	static etp_worker wrk_first; /* NOT etp */
249		392
250	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	393	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
251	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	394	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
252		395
253	/* worker threads management */	396	/* worker threads management */
254		397
		398	static void ecb_cold
255	static void etp_worker_clear (etp_worker *wrk)	399	etp_worker_clear (etp_worker *wrk)
256	{	400	{
257	ETP_WORKER_CLEAR (wrk);
258	}	401	}
259		402
		403	static void ecb_cold
260	static void etp_worker_free (etp_worker *wrk)	404	etp_worker_free (etp_worker *wrk)
261	{	405	{
		406	free (wrk->tmpbuf.ptr);
		407
262	wrk->next->prev = wrk->prev;	408	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;	409	wrk->prev->next = wrk->next;
264		410
265	free (wrk);	411	free (wrk);
266	}	412	}
267		413
268	static unsigned int etp_nreqs (void)	414	static unsigned int
		415	etp_nreqs (void)
269	{	416	{
270	int retval;	417	int retval;
271	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	418	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
272	retval = nreqs;	419	retval = nreqs;
273	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	420	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
274	return retval;	421	return retval;
275	}	422	}
276		423
277	static unsigned int etp_nready (void)	424	static unsigned int
		425	etp_nready (void)
278	{	426	{
279	unsigned int retval;	427	unsigned int retval;
280		428
281	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	429	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
282	retval = nready;	430	retval = nready;
283	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	431	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
284		432
285	return retval;	433	return retval;
286	}	434	}
287		435
288	static unsigned int etp_npending (void)	436	static unsigned int
		437	etp_npending (void)
289	{	438	{
290	unsigned int retval;	439	unsigned int retval;
291		440
292	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	441	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
293	retval = npending;	442	retval = npending;
294	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	443	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
295		444
296	return retval;	445	return retval;
297	}	446	}
298		447
299	static unsigned int etp_nthreads (void)	448	static unsigned int
		449	etp_nthreads (void)
300	{	450	{
301	unsigned int retval;	451	unsigned int retval;
302		452
303	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	453	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
304	retval = started;	454	retval = started;
…		…
318	} etp_reqq;	468	} etp_reqq;
319		469
320	static etp_reqq req_queue;	470	static etp_reqq req_queue;
321	static etp_reqq res_queue;	471	static etp_reqq res_queue;
322		472
		473	static void ecb_noinline ecb_cold
		474	reqq_init (etp_reqq *q)
		475	{
		476	int pri;
		477
		478	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		479	q->qs[pri] = q->qe[pri] = 0;
		480
		481	q->size = 0;
		482	}
		483
		484	static int ecb_noinline
323	static int reqq_push (etp_reqq *q, ETP_REQ *req)	485	reqq_push (etp_reqq *q, ETP_REQ *req)
324	{	486	{
325	int pri = req->pri;	487	int pri = req->pri;
326	req->next = 0;	488	req->next = 0;
327		489
328	if (q->qe[pri])	490	if (q->qe[pri])
…		…
334	q->qe[pri] = q->qs[pri] = req;	496	q->qe[pri] = q->qs[pri] = req;
335		497
336	return q->size++;	498	return q->size++;
337	}	499	}
338		500
		501	static ETP_REQ * ecb_noinline
339	static ETP_REQ *reqq_shift (etp_reqq *q)	502	reqq_shift (etp_reqq *q)
340	{	503	{
341	int pri;	504	int pri;
342		505
343	if (!q->size)	506	if (!q->size)
344	return 0;	507	return 0;
…		…
359	}	522	}
360		523
361	abort ();	524	abort ();
362	}	525	}
363		526
364	static void etp_atfork_prepare (void)	527	static int ecb_cold
		528	etp_init (void (*want_poll)(void), void (*done_poll)(void))
365	{	529	{
366	X_LOCK (wrklock);	530	X_MUTEX_CREATE (wrklock);
367	X_LOCK (reqlock);	531	X_MUTEX_CREATE (reslock);
368	X_LOCK (reslock);	532	X_MUTEX_CREATE (reqlock);
369	#if !HAVE_PREADWRITE	533	X_COND_CREATE (reqwait);
370	X_LOCK (preadwritelock);
371	#endif
372	}
373		534
374	static void etp_atfork_parent (void)	535	reqq_init (&req_queue);
375	{	536	reqq_init (&res_queue);
376	#if !HAVE_PREADWRITE
377	X_UNLOCK (preadwritelock);
378	#endif
379	X_UNLOCK (reslock);
380	X_UNLOCK (reqlock);
381	X_UNLOCK (wrklock);
382	}
383		537
384	static void etp_atfork_child (void)	538	wrk_first.next =
385	{	539	wrk_first.prev = &wrk_first;
386	ETP_REQ *prv;
387
388	while ((prv = reqq_shift (&req_queue)))
389	ETP_DESTROY (prv);
390
391	while ((prv = reqq_shift (&res_queue)))
392	ETP_DESTROY (prv);
393
394	while (wrk_first.next != &wrk_first)
395	{
396	etp_worker *wrk = wrk_first.next;
397
398	if (wrk->req)
399	ETP_DESTROY (wrk->req);
400
401	etp_worker_clear (wrk);
402	etp_worker_free (wrk);
403	}
404		540
405	started = 0;	541	started = 0;
406	idle = 0;	542	idle = 0;
407	nreqs = 0;	543	nreqs = 0;
408	nready = 0;	544	nready = 0;
409	npending = 0;	545	npending = 0;
410		546
411	etp_atfork_parent ();
412	}
413
414	static void
415	etp_once_init (void)
416	{
417	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
418	}
419
420	static int
421	etp_init (void (*want_poll)(void), void (*done_poll)(void))
422	{
423	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
424
425	pthread_once (&doinit, etp_once_init);
426
427	want_poll_cb = want_poll;	547	want_poll_cb = want_poll;
428	done_poll_cb = done_poll;	548	done_poll_cb = done_poll;
429		549
430	return 0;	550	return 0;
431	}	551	}
432		552
433	X_THREAD_PROC (etp_proc);	553	X_THREAD_PROC (etp_proc);
434		554
		555	static void ecb_cold
435	static void etp_start_thread (void)	556	etp_start_thread (void)
436	{	557	{
437	etp_worker *wrk = calloc (1, sizeof (etp_worker));	558	etp_worker *wrk = calloc (1, sizeof (etp_worker));
438		559
439	/*TODO*/	560	/*TODO*/
440	assert (("unable to allocate worker thread data", wrk));	561	assert (("unable to allocate worker thread data", wrk));
…		…
453	free (wrk);	574	free (wrk);
454		575
455	X_UNLOCK (wrklock);	576	X_UNLOCK (wrklock);
456	}	577	}
457		578
		579	static void
458	static void etp_maybe_start_thread (void)	580	etp_maybe_start_thread (void)
459	{	581	{
460	if (expect_true (etp_nthreads () >= wanted))	582	if (ecb_expect_true (etp_nthreads () >= wanted))
461	return;	583	return;
462		584
463	/* todo: maybe use idle here, but might be less exact */	585	/* todo: maybe use idle here, but might be less exact */
464	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))	586	if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
465	return;	587	return;
466		588
467	etp_start_thread ();	589	etp_start_thread ();
468	}	590	}
469		591
		592	static void ecb_cold
470	static void etp_end_thread (void)	593	etp_end_thread (void)
471	{	594	{
472	eio_req *req = calloc (1, sizeof (eio_req));	595	eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */
473		596
474	req->type = -1;	597	req->type = -1;
475	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	598	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
476		599
477	X_LOCK (reqlock);	600	X_LOCK (reqlock);
…		…
482	X_LOCK (wrklock);	605	X_LOCK (wrklock);
483	--started;	606	--started;
484	X_UNLOCK (wrklock);	607	X_UNLOCK (wrklock);
485	}	608	}
486		609
487	static int etp_poll (void)	610	static int
		611	etp_poll (void)
488	{	612	{
489	unsigned int maxreqs;	613	unsigned int maxreqs;
490	unsigned int maxtime;	614	unsigned int maxtime;
491	struct timeval tv_start, tv_now;	615	struct timeval tv_start, tv_now;
492		616
…		…
522		646
523	X_LOCK (reqlock);	647	X_LOCK (reqlock);
524	--nreqs;	648	--nreqs;
525	X_UNLOCK (reqlock);	649	X_UNLOCK (reqlock);
526		650
527	if (expect_false (req->type == EIO_GROUP && req->size))	651	if (ecb_expect_false (req->type == EIO_GROUP && req->size))
528	{	652	{
529	req->int1 = 1; /* mark request as delayed */	653	req->int1 = 1; /* mark request as delayed */
530	continue;	654	continue;
531	}	655	}
532	else	656	else
533	{	657	{
534	int res = ETP_FINISH (req);	658	int res = ETP_FINISH (req);
535	if (expect_false (res))	659	if (ecb_expect_false (res))
536	return res;	660	return res;
537	}	661	}
538		662
539	if (expect_false (maxreqs && !--maxreqs))	663	if (ecb_expect_false (maxreqs && !--maxreqs))
540	break;	664	break;
541		665
542	if (maxtime)	666	if (maxtime)
543	{	667	{
544	gettimeofday (&tv_now, 0);	668	gettimeofday (&tv_now, 0);
…		…
550		674
551	errno = EAGAIN;	675	errno = EAGAIN;
552	return -1;	676	return -1;
553	}	677	}
554		678
		679	static void
555	static void etp_cancel (ETP_REQ *req)	680	etp_cancel (ETP_REQ *req)
556	{	681	{
557	X_LOCK (wrklock);	682	req->cancelled = 1;
558	req->flags |= EIO_FLAG_CANCELLED;
559	X_UNLOCK (wrklock);
560		683
561	eio_grp_cancel (req);	684	eio_grp_cancel (req);
562	}	685	}
563		686
		687	static void
564	static void etp_submit (ETP_REQ *req)	688	etp_submit (ETP_REQ *req)
565	{	689	{
566	req->pri -= ETP_PRI_MIN;	690	req->pri -= ETP_PRI_MIN;
567		691
568	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	692	if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
569	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	693	if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
570		694
571	if (expect_false (req->type == EIO_GROUP))	695	if (ecb_expect_false (req->type == EIO_GROUP))
572	{	696	{
573	/* I hope this is worth it :/ */	697	/* I hope this is worth it :/ */
574	X_LOCK (reqlock);	698	X_LOCK (reqlock);
575	++nreqs;	699	++nreqs;
576	X_UNLOCK (reqlock);	700	X_UNLOCK (reqlock);
…		…
595		719
596	etp_maybe_start_thread ();	720	etp_maybe_start_thread ();
597	}	721	}
598	}	722	}
599		723
		724	static void ecb_cold
600	static void etp_set_max_poll_time (double nseconds)	725	etp_set_max_poll_time (double nseconds)
601	{	726	{
602	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	727	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
603	max_poll_time = nseconds * EIO_TICKS;	728	max_poll_time = nseconds * EIO_TICKS;
604	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	729	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
605	}	730	}
606		731
		732	static void ecb_cold
607	static void etp_set_max_poll_reqs (unsigned int maxreqs)	733	etp_set_max_poll_reqs (unsigned int maxreqs)
608	{	734	{
609	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	735	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
610	max_poll_reqs = maxreqs;	736	max_poll_reqs = maxreqs;
611	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	737	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
612	}	738	}
613		739
		740	static void ecb_cold
614	static void etp_set_max_idle (unsigned int nthreads)	741	etp_set_max_idle (unsigned int nthreads)
615	{	742	{
616	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	743	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
617	max_idle = nthreads <= 0 ? 1 : nthreads;	744	max_idle = nthreads;
618	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	745	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
619	}	746	}
620		747
		748	static void ecb_cold
		749	etp_set_idle_timeout (unsigned int seconds)
		750	{
		751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		752	idle_timeout = seconds;
		753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		754	}
		755
		756	static void ecb_cold
621	static void etp_set_min_parallel (unsigned int nthreads)	757	etp_set_min_parallel (unsigned int nthreads)
622	{	758	{
623	if (wanted < nthreads)	759	if (wanted < nthreads)
624	wanted = nthreads;	760	wanted = nthreads;
625	}	761	}
626		762
		763	static void ecb_cold
627	static void etp_set_max_parallel (unsigned int nthreads)	764	etp_set_max_parallel (unsigned int nthreads)
628	{	765	{
629	if (wanted > nthreads)	766	if (wanted > nthreads)
630	wanted = nthreads;	767	wanted = nthreads;
631		768
632	while (started > wanted)	769	while (started > wanted)
633	etp_end_thread ();	770	etp_end_thread ();
634	}	771	}
635		772
636	/*****************************************************************************/	773	/*****************************************************************************/
637		774
		775	static void
638	static void grp_try_feed (eio_req *grp)	776	grp_try_feed (eio_req *grp)
639	{	777	{
640	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	778	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
641	{	779	{
642	grp->flags &= ~EIO_FLAG_GROUPADD;	780	grp->flags &= ~EIO_FLAG_GROUPADD;
643		781
…		…
650	break;	788	break;
651	}	789	}
652	}	790	}
653	}	791	}
654		792
		793	static int
655	static int grp_dec (eio_req *grp)	794	grp_dec (eio_req *grp)
656	{	795	{
657	--grp->size;	796	--grp->size;
658		797
659	/* call feeder, if applicable */	798	/* call feeder, if applicable */
660	grp_try_feed (grp);	799	grp_try_feed (grp);
…		…
664	return eio_finish (grp);	803	return eio_finish (grp);
665	else	804	else
666	return 0;	805	return 0;
667	}	806	}
668		807
		808	static void
669	void eio_destroy (eio_req *req)	809	eio_destroy (eio_req *req)
670	{	810	{
671	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);	811	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
672	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);	812	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
673		813
674	EIO_DESTROY (req);	814	EIO_DESTROY (req);
675	}	815	}
676		816
		817	static int
677	static int eio_finish (eio_req *req)	818	eio_finish (eio_req *req)
678	{	819	{
679	int res = EIO_FINISH (req);	820	int res = EIO_FINISH (req);
680		821
681	if (req->grp)	822	if (req->grp)
682	{	823	{
…		…
690	if (grp->grp_first == req)	831	if (grp->grp_first == req)
691	grp->grp_first = req->grp_next;	832	grp->grp_first = req->grp_next;
692		833
693	res2 = grp_dec (grp);	834	res2 = grp_dec (grp);
694		835
695	if (!res && res2)	836	if (!res)
696	res = res2;	837	res = res2;
697	}	838	}
698		839
699	eio_destroy (req);	840	eio_destroy (req);
700		841
701	return res;	842	return res;
702	}	843	}
703		844
		845	void
704	void eio_grp_cancel (eio_req *grp)	846	eio_grp_cancel (eio_req *grp)
705	{	847	{
706	for (grp = grp->grp_first; grp; grp = grp->grp_next)	848	for (grp = grp->grp_first; grp; grp = grp->grp_next)
707	eio_cancel (grp);	849	eio_cancel (grp);
708	}	850	}
709		851
		852	void
710	void eio_cancel (eio_req *req)	853	eio_cancel (eio_req *req)
711	{	854	{
712	etp_cancel (req);	855	etp_cancel (req);
713	}	856	}
714		857
		858	void
715	void eio_submit (eio_req *req)	859	eio_submit (eio_req *req)
716	{	860	{
717	etp_submit (req);	861	etp_submit (req);
718	}	862	}
719		863
720	unsigned int eio_nreqs (void)	864	unsigned int
		865	eio_nreqs (void)
721	{	866	{
722	return etp_nreqs ();	867	return etp_nreqs ();
723	}	868	}
724		869
725	unsigned int eio_nready (void)	870	unsigned int
		871	eio_nready (void)
726	{	872	{
727	return etp_nready ();	873	return etp_nready ();
728	}	874	}
729		875
730	unsigned int eio_npending (void)	876	unsigned int
		877	eio_npending (void)
731	{	878	{
732	return etp_npending ();	879	return etp_npending ();
733	}	880	}
734		881
735	unsigned int eio_nthreads (void)	882	unsigned int ecb_cold
		883	eio_nthreads (void)
736	{	884	{
737	return etp_nthreads ();	885	return etp_nthreads ();
738	}	886	}
739		887
		888	void ecb_cold
740	void eio_set_max_poll_time (double nseconds)	889	eio_set_max_poll_time (double nseconds)
741	{	890	{
742	etp_set_max_poll_time (nseconds);	891	etp_set_max_poll_time (nseconds);
743	}	892	}
744		893
		894	void ecb_cold
745	void eio_set_max_poll_reqs (unsigned int maxreqs)	895	eio_set_max_poll_reqs (unsigned int maxreqs)
746	{	896	{
747	etp_set_max_poll_reqs (maxreqs);	897	etp_set_max_poll_reqs (maxreqs);
748	}	898	}
749		899
		900	void ecb_cold
750	void eio_set_max_idle (unsigned int nthreads)	901	eio_set_max_idle (unsigned int nthreads)
751	{	902	{
752	etp_set_max_idle (nthreads);	903	etp_set_max_idle (nthreads);
753	}	904	}
754		905
		906	void ecb_cold
		907	eio_set_idle_timeout (unsigned int seconds)
		908	{
		909	etp_set_idle_timeout (seconds);
		910	}
		911
		912	void ecb_cold
755	void eio_set_min_parallel (unsigned int nthreads)	913	eio_set_min_parallel (unsigned int nthreads)
756	{	914	{
757	etp_set_min_parallel (nthreads);	915	etp_set_min_parallel (nthreads);
758	}	916	}
759		917
		918	void ecb_cold
760	void eio_set_max_parallel (unsigned int nthreads)	919	eio_set_max_parallel (unsigned int nthreads)
761	{	920	{
762	etp_set_max_parallel (nthreads);	921	etp_set_max_parallel (nthreads);
763	}	922	}
764		923
765	int eio_poll (void)	924	int eio_poll (void)
…		…
774	# undef pread	933	# undef pread
775	# undef pwrite	934	# undef pwrite
776	# define pread eio__pread	935	# define pread eio__pread
777	# define pwrite eio__pwrite	936	# define pwrite eio__pwrite
778		937
779	static ssize_t	938	static eio_ssize_t
780	eio__pread (int fd, void *buf, size_t count, off_t offset)	939	eio__pread (int fd, void *buf, size_t count, off_t offset)
781	{	940	{
782	ssize_t res;	941	eio_ssize_t res;
783	off_t ooffset;	942	off_t ooffset;
784		943
785	X_LOCK (preadwritelock);	944	X_LOCK (preadwritelock);
786	ooffset = lseek (fd, 0, SEEK_CUR);	945	ooffset = lseek (fd, 0, SEEK_CUR);
787	lseek (fd, offset, SEEK_SET);	946	lseek (fd, offset, SEEK_SET);
…		…
790	X_UNLOCK (preadwritelock);	949	X_UNLOCK (preadwritelock);
791		950
792	return res;	951	return res;
793	}	952	}
794		953
795	static ssize_t	954	static eio_ssize_t
796	eio__pwrite (int fd, void *buf, size_t count, off_t offset)	955	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
797	{	956	{
798	ssize_t res;	957	eio_ssize_t res;
799	off_t ooffset;	958	off_t ooffset;
800		959
801	X_LOCK (preadwritelock);	960	X_LOCK (preadwritelock);
802	ooffset = lseek (fd, 0, SEEK_CUR);	961	ooffset = lseek (fd, 0, SEEK_CUR);
803	lseek (fd, offset, SEEK_SET);	962	lseek (fd, offset, SEEK_SET);
…		…
807		966
808	return res;	967	return res;
809	}	968	}
810	#endif	969	#endif
811		970
812	#ifndef HAVE_FUTIMES	971	#ifndef HAVE_UTIMES
813		972
814	# undef utimes	973	# undef utimes
815	# undef futimes
816	# define utimes(path,times) eio__utimes (path, times)	974	# define utimes(path,times) eio__utimes (path, times)
817	# define futimes(fd,times) eio__futimes (fd, times)
818		975
819	static int	976	static int
820	eio__utimes (const char *filename, const struct timeval times[2])	977	eio__utimes (const char *filename, const struct timeval times[2])
821	{	978	{
822	if (times)	979	if (times)
…		…
830	}	987	}
831	else	988	else
832	return utime (filename, 0);	989	return utime (filename, 0);
833	}	990	}
834		991
		992	#endif
		993
		994	#ifndef HAVE_FUTIMES
		995
		996	# undef futimes
		997	# define futimes(fd,times) eio__futimes (fd, times)
		998
		999	static int
835	static int eio__futimes (int fd, const struct timeval tv[2])	1000	eio__futimes (int fd, const struct timeval tv[2])
836	{	1001	{
837	errno = ENOSYS;	1002	errno = ENOSYS;
838	return -1;	1003	return -1;
839	}	1004	}
840		1005
…		…
843	#if !HAVE_FDATASYNC	1008	#if !HAVE_FDATASYNC
844	# undef fdatasync	1009	# undef fdatasync
845	# define fdatasync(fd) fsync (fd)	1010	# define fdatasync(fd) fsync (fd)
846	#endif	1011	#endif
847		1012
		1013	static int
		1014	eio__syncfs (int fd)
		1015	{
		1016	int res;
		1017
		1018	#if HAVE_SYS_SYNCFS
		1019	res = (int)syscall (__NR_syncfs, (int)(fd));
		1020	#else
		1021	res = -1;
		1022	errno = ENOSYS;
		1023	#endif
		1024
		1025	if (res < 0 && errno == ENOSYS && fd >= 0)
		1026	sync ();
		1027
		1028	return res;
		1029	}
		1030
848	/* sync_file_range always needs emulation */	1031	/* sync_file_range always needs emulation */
849	int	1032	static int
850	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	1033	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
851	{	1034	{
852	#if HAVE_SYNC_FILE_RANGE	1035	#if HAVE_SYNC_FILE_RANGE
853	int res;	1036	int res;
854		1037
…		…
871	/* even though we could play tricks with the flags, it's better to always	1054	/* even though we could play tricks with the flags, it's better to always
872	* call fdatasync, as that matches the expectation of its users best */	1055	* call fdatasync, as that matches the expectation of its users best */
873	return fdatasync (fd);	1056	return fdatasync (fd);
874	}	1057	}
875		1058
		1059	static int
		1060	eio__fallocate (int fd, int mode, off_t offset, size_t len)
		1061	{
		1062	#if HAVE_FALLOCATE
		1063	return fallocate (fd, mode, offset, len);
		1064	#else
		1065	errno = ENOSYS;
		1066	return -1;
		1067	#endif
		1068	}
		1069
876	#if !HAVE_READAHEAD	1070	#if !HAVE_READAHEAD
877	# undef readahead	1071	# undef readahead
878	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	1072	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
879		1073
880	static ssize_t	1074	static eio_ssize_t
881	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	1075	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
882	{	1076	{
883	size_t todo = count;	1077	size_t todo = count;
884	dBUF;	1078	dBUF;
885		1079
…		…
890	pread (fd, eio_buf, len, offset);	1084	pread (fd, eio_buf, len, offset);
891	offset += len;	1085	offset += len;
892	todo -= len;	1086	todo -= len;
893	}	1087	}
894		1088
		1089	FUBd;
		1090
895	errno = 0;	1091	errno = 0;
896	return count;	1092	return count;
897	}	1093	}
898		1094
899	#endif	1095	#endif
900		1096
901	/* sendfile always needs emulation */	1097	/* sendfile always needs emulation */
902	static ssize_t	1098	static eio_ssize_t
903	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1099	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
904	{	1100	{
		1101	eio_ssize_t written = 0;
905	ssize_t res;	1102	eio_ssize_t res;
906		1103
907	if (!count)	1104	if (!count)
908	return 0;	1105	return 0;
909		1106
		1107	for (;;)
		1108	{
		1109	#ifdef __APPLE__
		1110	# undef HAVE_SENDFILE /* broken, as everything on os x */
		1111	#endif
910	#if HAVE_SENDFILE	1112	#if HAVE_SENDFILE
911	# if __linux	1113	# if __linux
		1114	off_t soffset = offset;
912	res = sendfile (ofd, ifd, &offset, count);	1115	res = sendfile (ofd, ifd, &soffset, count);
913		1116
914	# elif __freebsd	1117	# elif __FreeBSD__
915	/*	1118	/*
916	* Of course, the freebsd sendfile is a dire hack with no thoughts	1119	* Of course, the freebsd sendfile is a dire hack with no thoughts
917	* wasted on making it similar to other I/O functions.	1120	* wasted on making it similar to other I/O functions.
918	*/	1121	*/
919	{
920	off_t sbytes;	1122	off_t sbytes;
921	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1123	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
922		1124
923	if (res < 0 && sbytes)	1125	#if 0 /* according to the manpage, this is correct, but broken behaviour */
924	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */	1126	/* freebsd' sendfile will return 0 on success */
		1127	/* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
		1128	/* not on e.g. EIO or EPIPE - sounds broken */
		1129	if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
925	res = sbytes;	1130	res = sbytes;
926	}	1131	#endif
		1132
		1133	/* according to source inspection, this is correct, and useful behaviour */
		1134	if (sbytes)
		1135	res = sbytes;
927		1136
928	# elif defined (__APPLE__)	1137	# elif defined (__APPLE__)
929
930	{
931	off_t sbytes = count;	1138	off_t sbytes = count;
932	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1139	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
933		1140
934	if (res < 0 && errno == EAGAIN && sbytes)	1141	/* according to the manpage, sbytes is always valid */
		1142	if (sbytes)
935	res = sbytes;	1143	res = sbytes;
936	}
937		1144
938	# elif __hpux	1145	# elif __hpux
939	res = sendfile (ofd, ifd, offset, count, 0, 0);	1146	res = sendfile (ofd, ifd, offset, count, 0, 0);
940		1147
941	# elif __solaris	1148	# elif __solaris
942	{
943	struct sendfilevec vec;	1149	struct sendfilevec vec;
944	size_t sbytes;	1150	size_t sbytes;
945		1151
946	vec.sfv_fd = ifd;	1152	vec.sfv_fd = ifd;
947	vec.sfv_flag = 0;	1153	vec.sfv_flag = 0;
948	vec.sfv_off = offset;	1154	vec.sfv_off = offset;
949	vec.sfv_len = count;	1155	vec.sfv_len = count;
950		1156
951	res = sendfilev (ofd, &vec, 1, &sbytes);	1157	res = sendfilev (ofd, &vec, 1, &sbytes);
952		1158
953	if (res < 0 && sbytes)	1159	if (res < 0 && sbytes)
954	res = sbytes;	1160	res = sbytes;
955	}
956		1161
957	# endif	1162	# endif
958		1163
959	#elif defined (_WIN32)	1164	#elif defined (_WIN32) && 0
960
961	/* does not work, just for documentation of what would need to be done */	1165	/* does not work, just for documentation of what would need to be done */
962	{	1166	/* actually, cannot be done like this, as TransmitFile changes the file offset, */
		1167	/* libeio guarantees that the file offset does not change, and windows */
		1168	/* has no way to get an independent handle to the same file description */
963	HANDLE h = TO_SOCKET (ifd);	1169	HANDLE h = TO_SOCKET (ifd);
964	SetFilePointer (h, offset, 0, FILE_BEGIN);	1170	SetFilePointer (h, offset, 0, FILE_BEGIN);
965	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1171	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
966	}
967		1172
968	#else	1173	#else
969	res = -1;	1174	res = -1;
970	errno = ENOSYS;	1175	errno = ENOSYS;
971	#endif	1176	#endif
972		1177
		1178	/* we assume sendfile can copy at least 128mb in one go */
		1179	if (res <= 128 * 1024 * 1024)
		1180	{
		1181	if (res > 0)
		1182	written += res;
		1183
		1184	if (written)
		1185	return written;
		1186
		1187	break;
		1188	}
		1189	else
		1190	{
		1191	/* if we requested more, then probably the kernel was lazy */
		1192	written += res;
		1193	offset += res;
		1194	count -= res;
		1195
		1196	if (!count)
		1197	return written;
		1198	}
		1199	}
		1200
973	if (res < 0	1201	if (res < 0
974	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1202	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		1203	/* BSDs */
		1204	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
		1205	|| errno == ENOTSUP
		1206	#endif
		1207	#ifdef EOPNOTSUPP /* windows */
975	|| errno == ENOTSUP || errno == EOPNOTSUPP /* BSDs */	1208	|| errno == EOPNOTSUPP /* BSDs */
		1209	#endif
976	#if __solaris	1210	#if __solaris
977	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	1211	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
978	#endif	1212	#endif
979	)	1213	)
980	)	1214	)
…		…
984		1218
985	res = 0;	1219	res = 0;
986		1220
987	while (count)	1221	while (count)
988	{	1222	{
989	ssize_t cnt;	1223	eio_ssize_t cnt;
990		1224
991	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);	1225	cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
992		1226
993	if (cnt <= 0)	1227	if (cnt <= 0)
994	{	1228	{
…		…
1006		1240
1007	offset += cnt;	1241	offset += cnt;
1008	res += cnt;	1242	res += cnt;
1009	count -= cnt;	1243	count -= cnt;
1010	}	1244	}
		1245
		1246	FUBd;
1011	}	1247	}
1012		1248
1013	return res;	1249	return res;
		1250	}
		1251
		1252	#ifdef PAGESIZE
		1253	# define eio_pagesize() PAGESIZE
		1254	#else
		1255	static intptr_t
		1256	eio_pagesize (void)
		1257	{
		1258	static intptr_t page;
		1259
		1260	if (!page)
		1261	page = sysconf (_SC_PAGESIZE);
		1262
		1263	return page;
		1264	}
		1265	#endif
		1266
		1267	static void
		1268	eio_page_align (void **addr, size_t *length)
		1269	{
		1270	intptr_t mask = eio_pagesize () - 1;
		1271
		1272	/* round down addr */
		1273	intptr_t adj = mask & (intptr_t)*addr;
		1274
		1275	*addr = (void *)((intptr_t)*addr - adj);
		1276	*length += adj;
		1277
		1278	/* round up length */
		1279	*length = (*length + mask) & ~mask;
		1280	}
		1281
		1282	#if !_POSIX_MEMLOCK
		1283	# define eio__mlockall(a) EIO_ENOSYS ()
		1284	#else
		1285
		1286	static int
		1287	eio__mlockall (int flags)
		1288	{
		1289	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1290	extern int mallopt (int, int);
		1291	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1292	#endif
		1293
		1294	if (EIO_MCL_CURRENT != MCL_CURRENT
		1295	|| EIO_MCL_FUTURE != MCL_FUTURE)
		1296	{
		1297	flags = 0
		1298	| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1299	| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1300	}
		1301
		1302	return mlockall (flags);
		1303	}
		1304	#endif
		1305
		1306	#if !_POSIX_MEMLOCK_RANGE
		1307	# define eio__mlock(a,b) EIO_ENOSYS ()
		1308	#else
		1309
		1310	static int
		1311	eio__mlock (void *addr, size_t length)
		1312	{
		1313	eio_page_align (&addr, &length);
		1314
		1315	return mlock (addr, length);
		1316	}
		1317
		1318	#endif
		1319
		1320	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1321	# define eio__msync(a,b,c) EIO_ENOSYS ()
		1322	#else
		1323
		1324	static int
		1325	eio__msync (void *mem, size_t len, int flags)
		1326	{
		1327	eio_page_align (&mem, &len);
		1328
		1329	if (EIO_MS_ASYNC != MS_SYNC
		1330	|| EIO_MS_INVALIDATE != MS_INVALIDATE
		1331	|| EIO_MS_SYNC != MS_SYNC)
		1332	{
		1333	flags = 0
		1334	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1335	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1336	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1337	}
		1338
		1339	return msync (mem, len, flags);
		1340	}
		1341
		1342	#endif
		1343
		1344	static int
		1345	eio__mtouch (eio_req *req)
		1346	{
		1347	void *mem = req->ptr2;
		1348	size_t len = req->size;
		1349	int flags = req->int1;
		1350
		1351	eio_page_align (&mem, &len);
		1352
		1353	{
		1354	intptr_t addr = (intptr_t)mem;
		1355	intptr_t end = addr + len;
		1356	intptr_t page = eio_pagesize ();
		1357
		1358	if (addr < end)
		1359	if (flags & EIO_MT_MODIFY) /* modify */
		1360	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1361	else
		1362	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1363	}
		1364
		1365	return 0;
		1366	}
		1367
		1368	/*****************************************************************************/
		1369	/* requests implemented outside eio_execute, because they are so large */
		1370
		1371	/* copies some absolute path to tmpbuf */
		1372	static char *
		1373	eio__getwd (struct tmpbuf *tmpbuf, eio_wd wd)
		1374	{
		1375	if (wd == EIO_CWD)
		1376	return getcwd (tmpbuf->ptr, PATH_MAX);
		1377
		1378	#if HAVE_AT
		1379	abort (); /*TODO*/
		1380	#else
		1381	strcpy (tmpbuf->ptr, wd);
		1382	#endif
		1383	return tmpbuf->ptr;
		1384	}
		1385
		1386	/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
		1387	static int
		1388	eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1389	{
		1390	const char *rel = path;
		1391	char *res;
		1392	char *tmp1, *tmp2;
		1393	#if SYMLOOP_MAX > 32
		1394	int symlinks = SYMLOOP_MAX;
		1395	#else
		1396	int symlinks = 32;
		1397	#endif
		1398
		1399	/*D*/ /*TODO: wd ignored */
		1400
		1401	errno = EINVAL;
		1402	if (!rel)
		1403	return -1;
		1404
		1405	errno = ENOENT;
		1406	if (!*rel)
		1407	return -1;
		1408
		1409	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
		1410	tmp1 = res + PATH_MAX;
		1411	tmp2 = tmp1 + PATH_MAX;
		1412
		1413	#if 0 /* disabled, the musl way to do things is just too racy */
		1414	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
		1415	/* on linux we may be able to ask the kernel */
		1416	{
		1417	int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
		1418
		1419	if (fd >= 0)
		1420	{
		1421	sprintf (tmp1, "/proc/self/fd/%d", fd);
		1422	req->result = readlink (tmp1, res, PATH_MAX);
		1423	close (fd);
		1424
		1425	/* here we should probably stat the open file and the disk file, to make sure they still match */
		1426
		1427	if (req->result > 0)
		1428	goto done;
		1429	}
		1430	else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
		1431	return;
		1432	}
		1433	#endif
		1434	#endif
		1435
		1436	if (*rel != '/')
		1437	{
		1438	if (!eio__getwd (tmpbuf, wd))
		1439	return -1;
		1440
		1441	if (res [1]) /* only use if not / */
		1442	res += strlen (res);
		1443	}
		1444
		1445	while (*rel)
		1446	{
		1447	eio_ssize_t len, linklen;
		1448	const char *beg = rel;
		1449
		1450	while (*rel && *rel != '/')
		1451	++rel;
		1452
		1453	len = rel - beg;
		1454
		1455	if (!len) /* skip slashes */
		1456	{
		1457	++rel;
		1458	continue;
		1459	}
		1460
		1461	if (beg [0] == '.')
		1462	{
		1463	if (len == 1)
		1464	continue; /* . - nop */
		1465
		1466	if (beg [1] == '.' && len == 2)
		1467	{
		1468	/* .. - back up one component, if possible */
		1469
		1470	while (res != tmpbuf->ptr)
		1471	if (*--res == '/')
		1472	break;
		1473
		1474	continue;
		1475	}
		1476	}
		1477
		1478	errno = ENAMETOOLONG;
		1479	if (res + 1 + len + 1 >= tmp1)
		1480	return;
		1481
		1482	/* copy one component */
		1483	*res = '/';
		1484	memcpy (res + 1, beg, len);
		1485
		1486	/* zero-terminate, for readlink */
		1487	res [len + 1] = 0;
		1488
		1489	/* now check if it's a symlink */
		1490	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
		1491
		1492	if (linklen < 0)
		1493	{
		1494	if (errno != EINVAL)
		1495	return -1;
		1496
		1497	/* it's a normal directory. hopefully */
		1498	res += len + 1;
		1499	}
		1500	else
		1501	{
		1502	/* yay, it was a symlink - build new path in tmp2 */
		1503	int rellen = strlen (rel);
		1504
		1505	errno = ENAMETOOLONG;
		1506	if (linklen + 1 + rellen >= PATH_MAX)
		1507	return -1;
		1508
		1509	errno = ELOOP;
		1510	if (!--symlinks)
		1511	return -1;
		1512
		1513	if (*tmp1 == '/')
		1514	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
		1515
		1516	/* we need to be careful, as rel might point into tmp2 already */
		1517	memmove (tmp2 + linklen + 1, rel, rellen + 1);
		1518	tmp2 [linklen] = '/';
		1519	memcpy (tmp2, tmp1, linklen);
		1520
		1521	rel = tmp2;
		1522	}
		1523	}
		1524
		1525	/* special case for the lone root path */
		1526	if (res == tmpbuf->ptr)
		1527	*res++ = '/';
		1528
		1529	return res - (char *)tmpbuf->ptr;
1014	}	1530	}
1015		1531
1016	static signed char	1532	static signed char
1017	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1533	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1018	{	1534	{
1019	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */	1535	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1020	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;	1536	: a->inode < b->inode ? -1
		1537	: a->inode > b->inode ? 1
		1538	: 0;
1021	}	1539	}
1022		1540
1023	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0	1541	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1024		1542
1025	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1543	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1026	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1544	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1027		1545
1028	static void	1546	static void
1029	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1547	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1030	{	1548	{
1031	unsigned char bits [9 + sizeof (ino_t) * 8];	1549	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1032	unsigned char *bit = bits;	1550	unsigned char *bit = bits;
1033		1551
1034	assert (CHAR_BIT == 8);	1552	assert (CHAR_BIT == 8);
1035	assert (sizeof (eio_dirent) * 8 < 256);	1553	assert (sizeof (eio_dirent) * 8 < 256);
1036	assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */	1554	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1037	assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */	1555	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1038		1556
1039	if (size <= EIO_SORT_FAST)	1557	if (size <= EIO_SORT_FAST)
1040	return;	1558	return;
1041		1559
1042	/* first prepare an array of bits to test in our radix sort */	1560	/* first prepare an array of bits to test in our radix sort */
1043	/* try to take endianness into account, as well as differences in ino_t sizes */	1561	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1044	/* inode_bits must contain all inodes ORed together */	1562	/* inode_bits must contain all inodes ORed together */
1045	/* which is used to skip bits that are 0 everywhere, which is very common */	1563	/* which is used to skip bits that are 0 everywhere, which is very common */
1046	{	1564	{
1047	ino_t endianness;	1565	eio_ino_t endianness;
1048	int i, j;	1566	int i, j;
1049		1567
1050	/* we store the byte offset of byte n into byte n of "endianness" */	1568	/* we store the byte offset of byte n into byte n of "endianness" */
1051	for (i = 0; i < sizeof (ino_t); ++i)	1569	for (i = 0; i < sizeof (eio_ino_t); ++i)
1052	((unsigned char *)&endianness)[i] = i;	1570	((unsigned char *)&endianness)[i] = i;
1053		1571
1054	*bit++ = 0;	1572	*bit++ = 0;
1055		1573
1056	for (i = 0; i < sizeof (ino_t); ++i)	1574	for (i = 0; i < sizeof (eio_ino_t); ++i)
1057	{	1575	{
1058	/* shifting off the byte offsets out of "endianness" */	1576	/* shifting off the byte offsets out of "endianness" */
1059	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1577	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1060	endianness >>= 8;	1578	endianness >>= 8;
1061		1579
1062	for (j = 0; j < 8; ++j)	1580	for (j = 0; j < 8; ++j)
1063	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1581	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1064	*bit++ = offs + j;	1582	*bit++ = offs + j;
1065	}	1583	}
1066		1584
1067	for (j = 0; j < 8; ++j)	1585	for (j = 0; j < 8; ++j)
1068	if (score_bits & (1 << j))	1586	if (score_bits & (1 << j))
1069	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1587	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1070	}	1588	}
1071		1589
1072	/* now actually do the sorting (a variant of MSD radix sort) */	1590	/* now actually do the sorting (a variant of MSD radix sort) */
1073	{	1591	{
1074	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1592	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1075	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1593	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1076	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1594	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1077	int stk_idx = 0;	1595	int stk_idx = 0;
1078		1596
1079	base_stk [stk_idx] = dents;	1597	base_stk [stk_idx] = dents;
1080	end_stk [stk_idx] = dents + size;	1598	end_stk [stk_idx] = dents + size;
1081	bit_stk [stk_idx] = bit - 1;	1599	bit_stk [stk_idx] = bit - 1;
…		…
1160	}	1678	}
1161	}	1679	}
1162	}	1680	}
1163		1681
1164	static void	1682	static void
1165	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1683	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1166	{	1684	{
1167	if (size <= 1)	1685	if (size <= 1)
1168	return; /* our insertion sort relies on size > 0 */	1686	return; /* our insertion sort relies on size > 0 */
1169		1687
1170	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1688	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1176	eio_dent_insertion_sort (dents, size);	1694	eio_dent_insertion_sort (dents, size);
1177	}	1695	}
1178		1696
1179	/* read a full directory */	1697	/* read a full directory */
1180	static void	1698	static void
1181	eio__scandir (eio_req *req, etp_worker *self)	1699	eio__scandir (eio_req *req)
1182	{	1700	{
1183	DIR *dirp;
1184	EIO_STRUCT_DIRENT *entp;
1185	char *name, *names;	1701	char *name, *names;
1186	int namesalloc = 4096;	1702	int namesalloc = 4096 - sizeof (void *) * 4;
1187	int namesoffs = 0;	1703	int namesoffs = 0;
1188	int flags = req->int1;	1704	int flags = req->int1;
1189	eio_dirent *dents = 0;	1705	eio_dirent *dents = 0;
1190	int dentalloc = 128;	1706	int dentalloc = 128;
1191	int dentoffs = 0;	1707	int dentoffs = 0;
1192	ino_t inode_bits = 0;	1708	eio_ino_t inode_bits = 0;
		1709	#ifdef _WIN32
		1710	HANDLE dirp;
		1711	WIN32_FIND_DATA entp;
		1712	#else
		1713	DIR *dirp;
		1714	EIO_STRUCT_DIRENT *entp;
		1715	#endif
1193		1716
1194	req->result = -1;	1717	req->result = -1;
1195		1718
1196	if (!(flags & EIO_READDIR_DENTS))	1719	if (!(flags & EIO_READDIR_DENTS))
1197	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1720	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1198		1721
1199	X_LOCK (wrklock);	1722	#ifdef _WIN32
1200	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1723	{
		1724	int len = strlen ((const char *)req->ptr1);
		1725	char *path = malloc (MAX_PATH);
		1726	const char *fmt;
		1727
		1728	if (!len)
		1729	fmt = "./*";
		1730	else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\')
		1731	fmt = "%s*";
		1732	else
		1733	fmt = "%s/*";
		1734
		1735	_snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1);
		1736	dirp = FindFirstFile (path, &entp);
		1737	free (path);
		1738
		1739	if (dirp == INVALID_HANDLE_VALUE)
		1740	{
		1741	/* should steal _dosmaperr */
		1742	switch (GetLastError ())
		1743	{
		1744	case ERROR_FILE_NOT_FOUND:
		1745	req->result = 0;
		1746	break;
		1747
		1748	case ERROR_INVALID_NAME:
		1749	case ERROR_PATH_NOT_FOUND:
		1750	case ERROR_NO_MORE_FILES:
		1751	errno = ENOENT;
		1752	break;
		1753
		1754	case ERROR_NOT_ENOUGH_MEMORY:
		1755	errno = ENOMEM;
		1756	break;
		1757
		1758	default:
		1759	errno = EINVAL;
		1760	break;
		1761	}
		1762
		1763	return;
		1764	}
		1765	}
		1766	#else
1201	self->dirp = dirp = opendir (req->ptr1);	1767	dirp = opendir (req->ptr1);
		1768
		1769	if (!dirp)
		1770	return;
		1771	#endif
		1772
		1773	if (req->flags & EIO_FLAG_PTR1_FREE)
		1774	free (req->ptr1);
		1775
1202	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1776	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1203	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1777	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1204	req->ptr2 = names = malloc (namesalloc);	1778	req->ptr2 = names = malloc (namesalloc);
1205	X_UNLOCK (wrklock);
1206		1779
1207	if (dirp && names && (!flags || dents))	1780	if (!names || (flags && !dents))
		1781	return;
		1782
1208	for (;;)	1783	for (;;)
1209	{	1784	{
		1785	int done;
		1786
		1787	#ifdef _WIN32
		1788	done = !dirp;
		1789	#else
1210	errno = 0;	1790	errno = 0;
1211	entp = readdir (dirp);	1791	entp = readdir (dirp);
		1792	done = !entp;
		1793	#endif
1212		1794
1213	if (!entp)	1795	if (done)
1214	{	1796	{
		1797	#ifndef _WIN32
		1798	int old_errno = errno;
		1799	closedir (dirp);
		1800	errno = old_errno;
		1801
1215	if (errno)	1802	if (errno)
1216	break;	1803	break;
		1804	#endif
1217		1805
1218	/* sort etc. */	1806	/* sort etc. */
1219	req->int1 = flags;	1807	req->int1 = flags;
1220	req->result = dentoffs;	1808	req->result = dentoffs;
1221		1809
1222	if (flags & EIO_READDIR_STAT_ORDER)	1810	if (flags & EIO_READDIR_STAT_ORDER)
1223	eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */	1811	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1224	else if (flags & EIO_READDIR_DIRS_FIRST)	1812	else if (flags & EIO_READDIR_DIRS_FIRST)
1225	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1813	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1226	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1814	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1227	else	1815	else
		1816	{
		1817	/* in this case, all is known, and we just put dirs first and sort them */
		1818	eio_dirent *oth = dents + dentoffs;
		1819	eio_dirent *dir = dents;
		1820
		1821	/* now partition dirs to the front, and non-dirs to the back */
		1822	/* by walking from both sides and swapping if necessary */
		1823	while (oth > dir)
		1824	{
		1825	if (dir->type == EIO_DT_DIR)
		1826	++dir;
		1827	else if ((--oth)->type == EIO_DT_DIR)
		1828	{
		1829	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1830
		1831	++dir;
		1832	}
		1833	}
		1834
		1835	/* now sort the dirs only (dirs all have the same score) */
		1836	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1837	}
		1838
		1839	break;
		1840	}
		1841
		1842	/* now add the entry to our list(s) */
		1843	name = D_NAME (entp);
		1844
		1845	/* skip . and .. entries */
		1846	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1847	{
		1848	int len = D_NAMLEN (entp) + 1;
		1849
		1850	while (ecb_expect_false (namesoffs + len > namesalloc))
		1851	{
		1852	namesalloc *= 2;
		1853	req->ptr2 = names = realloc (names, namesalloc);
		1854
		1855	if (!names)
		1856	break;
		1857	}
		1858
		1859	memcpy (names + namesoffs, name, len);
		1860
		1861	if (dents)
		1862	{
		1863	struct eio_dirent *ent;
		1864
		1865	if (ecb_expect_false (dentoffs == dentalloc))
1228	{	1866	{
1229	/* in this case, all is known, and we just put dirs first and sort them */	1867	dentalloc *= 2;
		1868	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1869
		1870	if (!dents)
		1871	break;
		1872	}
		1873
1230	eio_dirent *oth = dents + dentoffs;	1874	ent = dents + dentoffs;
1231	eio_dirent *dir = dents;
1232		1875
1233	/* now partition dirs to the front, and non-dirs to the back */	1876	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1234	/* by walking from both sides and swapping if necessary */	1877	ent->namelen = len - 1;
1235	/* also clear score, so it doesn't influence sorting */	1878	ent->inode = D_INO (entp);
1236	while (oth > dir)	1879
		1880	inode_bits |= ent->inode;
		1881
		1882	switch (D_TYPE (entp))
		1883	{
		1884	default:
		1885	ent->type = EIO_DT_UNKNOWN;
		1886	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1887	break;
		1888
		1889	#ifdef DT_FIFO
		1890	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1891	#endif
		1892	#ifdef DT_CHR
		1893	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1894	#endif
		1895	#ifdef DT_MPC
		1896	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1897	#endif
		1898	#ifdef DT_DIR
		1899	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1900	#endif
		1901	#ifdef DT_NAM
		1902	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1903	#endif
		1904	#ifdef DT_BLK
		1905	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1906	#endif
		1907	#ifdef DT_MPB
		1908	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1909	#endif
		1910	#ifdef DT_REG
		1911	case DT_REG: ent->type = EIO_DT_REG; break;
		1912	#endif
		1913	#ifdef DT_NWK
		1914	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1915	#endif
		1916	#ifdef DT_CMP
		1917	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1918	#endif
		1919	#ifdef DT_LNK
		1920	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1921	#endif
		1922	#ifdef DT_SOCK
		1923	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1924	#endif
		1925	#ifdef DT_DOOR
		1926	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1927	#endif
		1928	#ifdef DT_WHT
		1929	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1930	#endif
		1931	}
		1932
		1933	ent->score = 7;
		1934
		1935	if (flags & EIO_READDIR_DIRS_FIRST)
		1936	{
		1937	if (ent->type == EIO_DT_UNKNOWN)
1237	{	1938	{
1238	if (dir->type == EIO_DT_DIR)	1939	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1239	++dir;	1940	ent->score = 1;
1240	else if ((--oth)->type == EIO_DT_DIR)	1941	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1241	{	1942	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1242	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1243
1244	++dir;
1245	}
1246	}	1943	}
1247		1944	else if (ent->type == EIO_DT_DIR)
1248	/* now sort the dirs only */	1945	ent->score = 0;
1249	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1250	}	1946	}
1251
1252	break;
1253	}
1254
1255	/* now add the entry to our list(s) */
1256	name = entp->d_name;
1257
1258	/* skip . and .. entries */
1259	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1260	{
1261	int len = D_NAMLEN (entp) + 1;
1262
1263	while (expect_false (namesoffs + len > namesalloc))
1264	{
1265	namesalloc *= 2;
1266	X_LOCK (wrklock);
1267	req->ptr2 = names = realloc (names, namesalloc);
1268	X_UNLOCK (wrklock);
1269
1270	if (!names)
1271	break;
1272	}	1947	}
1273		1948
1274	memcpy (names + namesoffs, name, len);
1275
1276	if (dents)
1277	{
1278	struct eio_dirent *ent;
1279
1280	if (expect_false (dentoffs == dentalloc))
1281	{
1282	dentalloc *= 2;
1283	X_LOCK (wrklock);
1284	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1285	X_UNLOCK (wrklock);
1286
1287	if (!dents)
1288	break;
1289	}
1290
1291	ent = dents + dentoffs;
1292
1293	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1294	ent->namelen = len - 1;
1295	ent->inode = D_INO (entp);
1296
1297	inode_bits |= ent->inode;
1298
1299	switch (D_TYPE (entp))
1300	{
1301	default:
1302	ent->type = EIO_DT_UNKNOWN;
1303	flags |= EIO_READDIR_FOUND_UNKNOWN;
1304	break;
1305
1306	#ifdef DT_FIFO
1307	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1308	#endif
1309	#ifdef DT_CHR
1310	case DT_CHR: ent->type = EIO_DT_CHR; break;
1311	#endif
1312	#ifdef DT_MPC
1313	case DT_MPC: ent->type = EIO_DT_MPC; break;
1314	#endif
1315	#ifdef DT_DIR
1316	case DT_DIR: ent->type = EIO_DT_DIR; break;
1317	#endif
1318	#ifdef DT_NAM
1319	case DT_NAM: ent->type = EIO_DT_NAM; break;
1320	#endif
1321	#ifdef DT_BLK
1322	case DT_BLK: ent->type = EIO_DT_BLK; break;
1323	#endif
1324	#ifdef DT_MPB
1325	case DT_MPB: ent->type = EIO_DT_MPB; break;
1326	#endif
1327	#ifdef DT_REG
1328	case DT_REG: ent->type = EIO_DT_REG; break;
1329	#endif
1330	#ifdef DT_NWK
1331	case DT_NWK: ent->type = EIO_DT_NWK; break;
1332	#endif
1333	#ifdef DT_CMP
1334	case DT_CMP: ent->type = EIO_DT_CMP; break;
1335	#endif
1336	#ifdef DT_LNK
1337	case DT_LNK: ent->type = EIO_DT_LNK; break;
1338	#endif
1339	#ifdef DT_SOCK
1340	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1341	#endif
1342	#ifdef DT_DOOR
1343	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1344	#endif
1345	#ifdef DT_WHT
1346	case DT_WHT: ent->type = EIO_DT_WHT; break;
1347	#endif
1348	}
1349
1350	ent->score = 7;
1351
1352	if (flags & EIO_READDIR_DIRS_FIRST)
1353	{
1354	if (ent->type == EIO_DT_UNKNOWN)
1355	{
1356	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1357	ent->score = 1;
1358	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1359	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1360	}
1361	else if (ent->type == EIO_DT_DIR)
1362	ent->score = 0;
1363	}
1364	}
1365
1366	namesoffs += len;	1949	namesoffs += len;
1367	++dentoffs;	1950	++dentoffs;
1368	}	1951	}
1369		1952
1370	if (EIO_CANCELLED (req))	1953	if (EIO_CANCELLED (req))
1371	{	1954	{
1372	errno = ECANCELED;	1955	errno = ECANCELED;
1373	break;	1956	break;
1374	}	1957	}
		1958
		1959	#ifdef _WIN32
		1960	if (!FindNextFile (dirp, &entp))
		1961	{
		1962	FindClose (dirp);
		1963	dirp = 0;
1375	}	1964	}
		1965	#endif
		1966	}
1376	}	1967	}
1377		1968
1378	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)	1969	/*****************************************************************************/
1379	# define eio__msync(a,b,c) ((errno = ENOSYS), -1)	1970	/* working directory stuff */
		1971
		1972	#if HAVE_AT
		1973
		1974	#define WD2FD(wd) ((wd) ? ((int)(long)(wd)) - 1 : AT_FDCWD)
		1975
		1976	#ifndef O_SEARCH
		1977	# define O_SEARCH O_RDONLY
		1978	#endif
		1979
		1980	eio_wd
		1981	eio_wd_open_sync (eio_wd wd, const char *path)
		1982	{
		1983	int fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1984
		1985	return fd >= 0 ? (eio_wd)(long)(fd + 1) : EIO_INVALID_WD;
		1986	}
		1987
		1988	static eio_wd
		1989	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		1990	{
		1991	return eio_wd_open_sync (wd, path);
		1992	}
		1993
		1994	void
		1995	eio_wd_close_sync (eio_wd wd)
		1996	{
		1997	int fd = WD2FD (wd);
		1998
		1999	if (fd >= 0)
		2000	close (fd);
		2001	}
		2002
		2003	static int
		2004	eio__truncateat (int dirfd, const char *path, off_t length)
		2005	{
		2006	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		2007	int res;
		2008
		2009	if (fd < 0)
		2010	return fd;
		2011
		2012	res = ftruncate (fd, length);
		2013	close (fd);
		2014	return res;
		2015	}
		2016
		2017	static int
		2018	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		2019	{
		2020	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		2021	int res;
		2022
		2023	if (fd < 0)
		2024	return fd;
		2025
		2026	res = fstatvfs (fd, buf);
		2027	close (fd);
		2028	return res;
		2029
		2030	}
		2031
1380	#else	2032	#else
1381		2033
1382	int	2034	/* on legacy systems, we represent the working directories simply by their path strings */
1383	eio__msync (void *mem, size_t len, int flags)	2035
		2036	static const char *
		2037	wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
1384	{	2038	{
1385	if (EIO_MS_ASYNC != MS_SYNC	2039	if (!wd || *path == '/')
1386	|| EIO_MS_INVALIDATE != MS_INVALIDATE	2040	return path;
1387	|| EIO_MS_SYNC != MS_SYNC)	2041
		2042	{
		2043	int l1 = strlen ((const char *)wd);
		2044	int l2 = strlen (path);
		2045
		2046	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
		2047
		2048	memcpy (res, wd, l1);
		2049	res [l1] = '/';
		2050	memcpy (res + l1 + 1, path, l2 + 1);
		2051
		2052	return res;
		2053	}
		2054	}
		2055
		2056	static eio_wd
		2057	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		2058	{
		2059	if (*path == '/') /* absolute paths ignore wd */
		2060	path = strdup (path);
		2061	else if (path [0] == '.' && !path [1]) /* special case '.', as it is common */
		2062	return wd;
		2063	else
1388	{	2064	{
1389	flags = 0	2065	int len = eio__realpath (tmpbuf, wd, path);
1390	| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1391	| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1392	| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1393	}
1394		2066
1395	return msync (mem, len, flags);	2067	path = EIO_INVALID_WD;
1396	}
1397		2068
1398	#endif	2069	if (len >= 0)
		2070	{
		2071	((char *)tmpbuf->ptr)[len] = 0;
		2072	path = strdup (tmpbuf->ptr);
		2073	}
		2074	}
1399		2075
1400	int
1401	eio__mtouch (void *mem, size_t len, int flags)
1402	{
1403	intptr_t addr = (intptr_t)mem;
1404	intptr_t end = addr + len;
1405	#ifdef PAGESIZE
1406	const intptr_t page = PAGESIZE;
1407	#else
1408	static intptr_t page;
1409
1410	if (!page)	2076	if (!path)
1411	page = sysconf (_SC_PAGESIZE);	2077	path = EIO_INVALID_WD;
1412	#endif
1413		2078
1414	/* round down to start of page, although this is probably useless */	2079	return (eio_wd)path;
1415	addr &= ~(page - 1); /* assume page size is always a power of two */	2080	}
1416		2081
1417	if (addr < end)	2082	eio_wd
1418	if (flags & EIO_MT_MODIFY) /* modify */	2083	eio_wd_open_sync (eio_wd wd, const char *path)
1419	do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);	2084	{
1420	else	2085	struct tmpbuf tmpbuf = { 0 };
1421	do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);	2086	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		2087	free (tmpbuf.ptr);
1422		2088
1423	return 0;	2089	return wd;
1424	}	2090	}
		2091
		2092	void
		2093	eio_wd_close_sync (eio_wd wd)
		2094	{
		2095	if (wd != EIO_INVALID_WD)
		2096	free (wd);
		2097	}
		2098
		2099	#endif
1425		2100
1426	/*****************************************************************************/	2101	/*****************************************************************************/
1427		2102
1428	#define ALLOC(len) \	2103	#define ALLOC(len) \
1429	if (!req->ptr2) \	2104	if (!req->ptr2) \
…		…
1444	{	2119	{
1445	ETP_REQ *req;	2120	ETP_REQ *req;
1446	struct timespec ts;	2121	struct timespec ts;
1447	etp_worker *self = (etp_worker *)thr_arg;	2122	etp_worker *self = (etp_worker *)thr_arg;
1448		2123
		2124	#if HAVE_PRCTL_SET_NAME
		2125	prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0);
		2126	#endif
		2127
1449	/* try to distribute timeouts somewhat randomly */	2128	/* try to distribute timeouts somewhat evenly */
1450	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	2129	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1451		2130
1452	for (;;)	2131	for (;;)
1453	{	2132	{
		2133	ts.tv_sec = 0;
		2134
1454	X_LOCK (reqlock);	2135	X_LOCK (reqlock);
1455		2136
1456	for (;;)	2137	for (;;)
1457	{	2138	{
1458	self->req = req = reqq_shift (&req_queue);	2139	req = reqq_shift (&req_queue);
1459		2140
1460	if (req)	2141	if (req)
1461	break;	2142	break;
1462		2143
		2144	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
		2145	{
		2146	X_UNLOCK (reqlock);
		2147	X_LOCK (wrklock);
		2148	--started;
		2149	X_UNLOCK (wrklock);
		2150	goto quit;
		2151	}
		2152
1463	++idle;	2153	++idle;
1464		2154
1465	ts.tv_sec = time (0) + IDLE_TIMEOUT;	2155	if (idle <= max_idle)
1466	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	2156	/* we are allowed to idle, so do so without any timeout */
		2157	X_COND_WAIT (reqwait, reqlock);
		2158	else
1467	{	2159	{
1468	if (idle > max_idle)	2160	/* initialise timeout once */
1469	{	2161	if (!ts.tv_sec)
1470	--idle;	2162	ts.tv_sec = time (0) + idle_timeout;
1471	X_UNLOCK (reqlock);
1472	X_LOCK (wrklock);
1473	--started;
1474	X_UNLOCK (wrklock);
1475	goto quit;
1476	}
1477		2163
1478	/* we are allowed to idle, so do so without any timeout */
1479	X_COND_WAIT (reqwait, reqlock);	2164	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
		2165	ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */
1480	}	2166	}
1481		2167
1482	--idle;	2168	--idle;
1483	}	2169	}
1484		2170
…		…
1487	X_UNLOCK (reqlock);	2173	X_UNLOCK (reqlock);
1488		2174
1489	if (req->type < 0)	2175	if (req->type < 0)
1490	goto quit;	2176	goto quit;
1491		2177
1492	if (!EIO_CANCELLED (req))
1493	ETP_EXECUTE (self, req);	2178	ETP_EXECUTE (self, req);
1494		2179
1495	X_LOCK (reslock);	2180	X_LOCK (reslock);
1496		2181
1497	++npending;	2182	++npending;
1498		2183
1499	if (!reqq_push (&res_queue, req) && want_poll_cb)	2184	if (!reqq_push (&res_queue, req) && want_poll_cb)
1500	want_poll_cb ();	2185	want_poll_cb ();
1501		2186
1502	self->req = 0;
1503	etp_worker_clear (self);	2187	etp_worker_clear (self);
1504		2188
1505	X_UNLOCK (reslock);	2189	X_UNLOCK (reslock);
1506	}	2190	}
1507		2191
1508	quit:	2192	quit:
		2193	free (req);
		2194
1509	X_LOCK (wrklock);	2195	X_LOCK (wrklock);
1510	etp_worker_free (self);	2196	etp_worker_free (self);
1511	X_UNLOCK (wrklock);	2197	X_UNLOCK (wrklock);
1512		2198
1513	return 0;	2199	return 0;
1514	}	2200	}
1515		2201
1516	/*****************************************************************************/	2202	/*****************************************************************************/
1517		2203
		2204	int ecb_cold
1518	int eio_init (void (*want_poll)(void), void (*done_poll)(void))	2205	eio_init (void (*want_poll)(void), void (*done_poll)(void))
1519	{	2206	{
		2207	#if !HAVE_PREADWRITE
		2208	X_MUTEX_CREATE (preadwritelock);
		2209	#endif
		2210
1520	return etp_init (want_poll, done_poll);	2211	return etp_init (want_poll, done_poll);
1521	}	2212	}
1522		2213
		2214	ecb_inline void
1523	static void eio_api_destroy (eio_req *req)	2215	eio_api_destroy (eio_req *req)
1524	{	2216	{
1525	free (req);	2217	free (req);
1526	}	2218	}
1527		2219
1528	#define REQ(rtype) \	2220	#define REQ(rtype) \
…		…
1547	{ \	2239	{ \
1548	eio_api_destroy (req); \	2240	eio_api_destroy (req); \
1549	return 0; \	2241	return 0; \
1550	}	2242	}
1551		2243
		2244	static void
1552	static void eio_execute (etp_worker *self, eio_req *req)	2245	eio_execute (etp_worker *self, eio_req *req)
1553	{	2246	{
1554	errno = 0;	2247	#if HAVE_AT
		2248	int dirfd;
		2249	#else
		2250	const char *path;
		2251	#endif
		2252
		2253	if (ecb_expect_false (EIO_CANCELLED (req)))
		2254	{
		2255	req->result = -1;
		2256	req->errorno = ECANCELED;
		2257	return;
		2258	}
		2259
		2260	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		2261	{
		2262	req->result = -1;
		2263	req->errorno = ENOENT;
		2264	return;
		2265	}
		2266
		2267	if (req->type >= EIO_OPEN)
		2268	{
		2269	#if HAVE_AT
		2270	dirfd = WD2FD (req->wd);
		2271	#else
		2272	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		2273	#endif
		2274	}
1555		2275
1556	switch (req->type)	2276	switch (req->type)
1557	{	2277	{
		2278	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		2279	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		2280	break;
		2281	case EIO_WD_CLOSE: req->result = 0;
		2282	eio_wd_close_sync (req->wd); break;
		2283
1558	case EIO_READ: ALLOC (req->size);	2284	case EIO_READ: ALLOC (req->size);
1559	req->result = req->offs >= 0	2285	req->result = req->offs >= 0
1560	? pread (req->int1, req->ptr2, req->size, req->offs)	2286	? pread (req->int1, req->ptr2, req->size, req->offs)
1561	: read (req->int1, req->ptr2, req->size); break;	2287	: read (req->int1, req->ptr2, req->size); break;
1562	case EIO_WRITE: req->result = req->offs >= 0	2288	case EIO_WRITE: req->result = req->offs >= 0
1563	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2289	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1564	: write (req->int1, req->ptr2, req->size); break;	2290	: write (req->int1, req->ptr2, req->size); break;
1565		2291
1566	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2292	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1567	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2293	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
		2294
		2295	#if HAVE_AT
1568		2296
1569	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2297	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1570	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2298	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1571	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2299	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1572	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2300	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
1573	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1574	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1575
1576	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;	2301	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
1577	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1578	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;	2302	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
1579	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1580	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;	2303	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
1581	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1582
1583	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;	2304	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
1584	case EIO_CLOSE: req->result = close (req->int1); break;	2305
1585	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
1586	case EIO_UNLINK: req->result = unlink (req->ptr1); break;	2306	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
1587	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	2307	case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
1588	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	2308	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
1589	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	2309	case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD (req->int3), req->ptr2); break;
1590	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	2310	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD (req->int3), req->ptr2, 0); break;
1591	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	2311	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
1592	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	2312	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1593
1594	case EIO_READLINK: ALLOC (NAME_MAX);	2313	case EIO_READLINK: ALLOC (PATH_MAX);
1595	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	2314	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
1596		2315	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1597	case EIO_SYNC: req->result = 0; sync (); break;	2316	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1598	case EIO_FSYNC: req->result = fsync (req->int1); break;
1599	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1600	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1601	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1602	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1603
1604	case EIO_READDIR: eio__scandir (req, self); break;
1605
1606	case EIO_BUSY:	2317	case EIO_UTIME:
1607	#ifdef _WIN32	2318	case EIO_FUTIME:
1608	Sleep (req->nv1 * 1000.);	2319	{
		2320	struct timespec ts[2];
		2321	struct timespec *times;
		2322
		2323	if (req->nv1 != -1. || req->nv2 != -1.)
		2324	{
		2325	ts[0].tv_sec = req->nv1;
		2326	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		2327	ts[1].tv_sec = req->nv2;
		2328	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		2329
		2330	times = ts;
		2331	}
		2332	else
		2333	times = 0;
		2334
		2335	req->result = req->type == EIO_FUTIME
		2336	? futimens (req->int1, times)
		2337	: utimensat (dirfd, req->ptr1, times, 0);
		2338	}
		2339	break;
		2340
1609	#else	2341	#else
1610	{
1611	struct timeval tv;
1612		2342
1613	tv.tv_sec = req->nv1;	2343	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1614	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	2344	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2345	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2346	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2347	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		2348	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		2349	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		2350	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
1615		2351
1616	req->result = select (0, 0, 0, 0, &tv);	2352	case EIO_UNLINK: req->result = unlink (path ); break;
1617	}	2353	case EIO_RMDIR: req->result = rmdir (path ); break;
1618	#endif	2354	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
1619	break;	2355	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		2356	case EIO_LINK: req->result = link (path , req->ptr2); break;
		2357	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		2358	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		2359	case EIO_READLINK: ALLOC (PATH_MAX);
		2360	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		2361	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2362	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
1620		2363
1621	case EIO_UTIME:	2364	case EIO_UTIME:
1622	case EIO_FUTIME:	2365	case EIO_FUTIME:
1623	{	2366	{
1624	struct timeval tv[2];	2367	struct timeval tv[2];
1625	struct timeval *times;	2368	struct timeval *times;
1626		2369
1627	if (req->nv1 != -1. || req->nv2 != -1.)	2370	if (req->nv1 != -1. || req->nv2 != -1.)
1628	{	2371	{
1629	tv[0].tv_sec = req->nv1;	2372	tv[0].tv_sec = req->nv1;
1630	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;	2373	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
1631	tv[1].tv_sec = req->nv2;	2374	tv[1].tv_sec = req->nv2;
1632	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;	2375	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
1633		2376
1634	times = tv;	2377	times = tv;
1635	}	2378	}
1636	else	2379	else
1637	times = 0;	2380	times = 0;
1638
1639		2381
1640	req->result = req->type == EIO_FUTIME	2382	req->result = req->type == EIO_FUTIME
1641	? futimes (req->int1, times)	2383	? futimes (req->int1, times)
1642	: utimes (req->ptr1, times);	2384	: utimes (req->ptr1, times);
1643	}	2385	}
1644	break;	2386	break;
1645		2387
		2388	#endif
		2389
		2390	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		2391	{
		2392	ALLOC (req->result);
		2393	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		2394	}
		2395	break;
		2396
		2397	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2398	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
		2399
		2400	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2401	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2402
		2403	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		2404	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
		2405	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		2406
		2407	case EIO_CLOSE: req->result = close (req->int1); break;
		2408	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
		2409	case EIO_SYNC: req->result = 0; sync (); break;
		2410	case EIO_FSYNC: req->result = fsync (req->int1); break;
		2411	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2412	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2413	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
		2414	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		2415	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
		2416	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
		2417	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
		2418	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
		2419
		2420	case EIO_READDIR: eio__scandir (req); break;
		2421
		2422	case EIO_BUSY:
		2423	#ifdef _WIN32
		2424	Sleep (req->nv1 * 1e3);
		2425	#else
		2426	{
		2427	struct timeval tv;
		2428
		2429	tv.tv_sec = req->nv1;
		2430	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
		2431
		2432	req->result = select (0, 0, 0, 0, &tv);
		2433	}
		2434	#endif
		2435	break;
		2436
1646	case EIO_GROUP:	2437	case EIO_GROUP:
1647	abort (); /* handled in eio_request */	2438	abort (); /* handled in eio_request */
1648		2439
1649	case EIO_NOP:	2440	case EIO_NOP:
1650	req->result = 0;	2441	req->result = 0;
1651	break;	2442	break;
1652		2443
1653	case EIO_CUSTOM:	2444	case EIO_CUSTOM:
1654	((void (*)(eio_req *))req->feed) (req);	2445	req->feed (req);
1655	break;	2446	break;
1656		2447
1657	default:	2448	default:
		2449	errno = ENOSYS;
1658	req->result = -1;	2450	req->result = -1;
1659	break;	2451	break;
1660	}	2452	}
1661		2453
1662	req->errorno = errno;	2454	req->errorno = errno;
…		…
1687	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2479	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1688	{	2480	{
1689	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2481	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1690	}	2482	}
1691		2483
		2484	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2485	{
		2486	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2487	}
		2488
		2489	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2490	{
		2491	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2492	}
		2493
		2494	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2495	{
		2496	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2497	}
		2498
1692	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2499	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1693	{	2500	{
1694	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2501	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1695	}	2502	}
1696		2503
1697	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)	2504	eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
1698	{	2505	{
1699	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	2506	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
1700	}	2507	}
1701		2508
1702	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)	2509	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
1703	{	2510	{
1704	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	2511	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		2512	}
		2513
		2514	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
		2515	{
		2516	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
1705	}	2517	}
1706		2518
1707	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2519	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
1708	{	2520	{
1709	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2521	REQ (EIO_CLOSE); req->int1 = fd; SEND;
…		…
1727	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)	2539	eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1728	{	2540	{
1729	REQ (EIO_FSTAT); req->int1 = fd; SEND;	2541	REQ (EIO_FSTAT); req->int1 = fd; SEND;
1730	}	2542	}
1731		2543
		2544	eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
		2545	{
		2546	REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
		2547	}
		2548
1732	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)	2549	eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1733	{	2550	{
1734	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	2551	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1735	}	2552	}
1736		2553
…		…
1742	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)	2559	eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1743	{	2560	{
1744	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;	2561	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1745	}	2562	}
1746		2563
1747	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2564	eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1748	{	2565	{
1749	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2566	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1750	}	2567	}
1751		2568
1752	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)	2569	eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
…		…
1772	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)	2589	eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1773	{	2590	{
1774	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;	2591	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1775	}	2592	}
1776		2593
1777	eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)	2594	eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1778	{	2595	{
1779	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;	2596	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1780	}	2597	}
1781		2598
1782	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)	2599	eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
…		…
1798	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)	2615	eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
1799	{	2616	{
1800	return eio__1path (EIO_READLINK, path, pri, cb, data);	2617	return eio__1path (EIO_READLINK, path, pri, cb, data);
1801	}	2618	}
1802		2619
		2620	eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
		2621	{
		2622	return eio__1path (EIO_REALPATH, path, pri, cb, data);
		2623	}
		2624
1803	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)	2625	eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
1804	{	2626	{
1805	return eio__1path (EIO_STAT, path, pri, cb, data);	2627	return eio__1path (EIO_STAT, path, pri, cb, data);
1806	}	2628	}
1807		2629
1808	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)	2630	eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1809	{	2631	{
1810	return eio__1path (EIO_LSTAT, path, pri, cb, data);	2632	return eio__1path (EIO_LSTAT, path, pri, cb, data);
1811	}	2633	}
1812		2634
		2635	eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
		2636	{
		2637	return eio__1path (EIO_STATVFS, path, pri, cb, data);
		2638	}
		2639
1813	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)	2640	eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1814	{	2641	{
1815	return eio__1path (EIO_UNLINK, path, pri, cb, data);	2642	return eio__1path (EIO_UNLINK, path, pri, cb, data);
1816	}	2643	}
1817		2644
…		…
1825	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;	2652	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1826	}	2653	}
1827		2654
1828	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	2655	eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1829	{	2656	{
1830	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	2657	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1831	}	2658	}
1832		2659
1833	static eio_req *	2660	static eio_req *
1834	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2661	eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1835	{	2662	{
…		…
1859	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)	2686	eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1860	{	2687	{
1861	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2688	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1862	}	2689	}
1863		2690
1864	eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)	2691	eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1865	{	2692	{
1866	REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;	2693	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1867	}	2694	}
1868		2695
1869	#endif	2696	#endif
1870		2697
1871	eio_req *eio_grp (eio_cb cb, void *data)	2698	eio_req *eio_grp (eio_cb cb, void *data)
…		…
1880	#undef SEND	2707	#undef SEND
1881		2708
1882	/*****************************************************************************/	2709	/*****************************************************************************/
1883	/* grp functions */	2710	/* grp functions */
1884		2711
		2712	void
1885	void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)	2713	eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1886	{	2714	{
1887	grp->int2 = limit;	2715	grp->int2 = limit;
1888	grp->feed = feed;	2716	grp->feed = feed;
1889		2717
1890	grp_try_feed (grp);	2718	grp_try_feed (grp);
1891	}	2719	}
1892		2720
		2721	void
1893	void eio_grp_limit (eio_req *grp, int limit)	2722	eio_grp_limit (eio_req *grp, int limit)
1894	{	2723	{
1895	grp->int2 = limit;	2724	grp->int2 = limit;
1896		2725
1897	grp_try_feed (grp);	2726	grp_try_feed (grp);
1898	}	2727	}
1899		2728
		2729	void
1900	void eio_grp_add (eio_req *grp, eio_req *req)	2730	eio_grp_add (eio_req *grp, eio_req *req)
1901	{	2731	{
1902	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	2732	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1903		2733
1904	grp->flags |= EIO_FLAG_GROUPADD;	2734	grp->flags |= EIO_FLAG_GROUPADD;
1905		2735
…		…
1916	}	2746	}
1917		2747
1918	/*****************************************************************************/	2748	/*****************************************************************************/
1919	/* misc garbage */	2749	/* misc garbage */
1920		2750
		2751	eio_ssize_t
1921	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2752	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1922	{	2753	{
1923	etp_worker wrk;
1924	ssize_t ret;
1925
1926	wrk.dbuf = 0;
1927
1928	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2754	return eio__sendfile (ofd, ifd, offset, count);
1929
1930	if (wrk.dbuf)
1931	free (wrk.dbuf);
1932
1933	return ret;
1934	}	2755	}
1935		2756

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