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Comparing cvsroot/libeio/eio.c (file contents):
Revision 1.90 by root, Sat Jul 16 16:46:10 2011 UTC vs.
Revision 1.123 by root, Tue Oct 9 04:53:53 2012 UTC

1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012 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	*
…		…
43		43
44	#include "eio.h"	44	#include "eio.h"
45	#include "ecb.h"	45	#include "ecb.h"
46		46
47	#ifdef EIO_STACKSIZE	47	#ifdef EIO_STACKSIZE
48	# define XTHREAD_STACKSIZE EIO_STACKSIZE	48	# define X_STACKSIZE EIO_STACKSIZE
49	#endif	49	#endif
50	#include "xthread.h"	50	#include "xthread.h"
51		51
52	#include <errno.h>	52	#include <errno.h>
53	#include <stddef.h>	53	#include <stddef.h>
…		…
71	#endif	71	#endif
72	#ifndef ELOOP	72	#ifndef ELOOP
73	# define ELOOP EDOM	73	# define ELOOP EDOM
74	#endif	74	#endif
75		75
		76	#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
		77	# define ENOTSOCK WSAENOTSOCK
		78	#endif
		79
76	static void eio_destroy (eio_req *req);	80	static void eio_destroy (eio_req *req);
77		81
78	#ifndef EIO_FINISH	82	#ifndef EIO_FINISH
79	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	83	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
80	#endif	84	#endif
…		…
101	#ifdef _WIN32	105	#ifdef _WIN32
102		106
103	#undef PAGESIZE	107	#undef PAGESIZE
104	#define PAGESIZE 4096 /* GetSystemInfo? */	108	#define PAGESIZE 4096 /* GetSystemInfo? */
105		109
		110	/* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
		111
106	#ifdef EIO_STRUCT_STATI64	112	#ifdef EIO_STRUCT_STATI64
		113	/* look at perl's non-sloppy stat */
107	#define stat(path,buf) _stati64 (path,buf)	114	#define stat(path,buf) _stati64 (path,buf)
108	#define fstat(fd,buf) _fstati64 (path,buf)	115	#define fstat(fd,buf) _fstati64 (fd,buf)
109	#endif	116	#endif
110	#define lstat(path,buf) stat (path,buf)	117	#define lstat(path,buf) stat (path,buf)
111	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))	118	#define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
112	#define mkdir(path,mode) _mkdir (path)	119	#define mkdir(path,mode) _mkdir (path)
113	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))	120	#define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
114		121
115	#define chmod(path,mode) _chmod (path, mode)	122	#define chmod(path,mode) _chmod (path, mode)
		123	#define dup(fd) _dup (fd)
		124	#define dup2(fd1,fd2) _dup2 (fd1, fd2)
		125
116	#define fchmod(fd,mode) EIO_ENOSYS ()	126	#define fchmod(fd,mode) EIO_ENOSYS ()
117	#define chown(path,uid,gid) EIO_ENOSYS ()	127	#define chown(path,uid,gid) EIO_ENOSYS ()
118	#define fchown(fd,uid,gid) EIO_ENOSYS ()	128	#define fchown(fd,uid,gid) EIO_ENOSYS ()
119	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */	129	#define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
120	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */	130	#define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
…		…
122	#define sync() EIO_ENOSYS ()	132	#define sync() EIO_ENOSYS ()
123	#define readlink(path,buf,s) EIO_ENOSYS ()	133	#define readlink(path,buf,s) EIO_ENOSYS ()
124	#define statvfs(path,buf) EIO_ENOSYS ()	134	#define statvfs(path,buf) EIO_ENOSYS ()
125	#define fstatvfs(fd,buf) EIO_ENOSYS ()	135	#define fstatvfs(fd,buf) EIO_ENOSYS ()
126		136
		137	#define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
		138	#define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
		139
		140	#if __GNUC__
		141	typedef long long eio_off_t; /* signed for compatibility to msvc */
		142	#else
		143	typedef __int64 eio_off_t; /* unsigned not supported by msvc */
		144	#endif
		145
		146	static eio_ssize_t
		147	eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		148	{
		149	OVERLAPPED o = { 0 };
		150	DWORD got;
		151
		152	o.Offset = offset;
		153	o.OffsetHigh = offset >> 32;
		154
		155	return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		156	? got : -1;
		157	}
		158
		159	static eio_ssize_t
		160	eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
		161	{
		162	OVERLAPPED o = { 0 };
		163	DWORD got;
		164
		165	o.Offset = offset;
		166	o.OffsetHigh = offset >> 32;
		167
		168	return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
		169	? got : -1;
		170	}
		171
		172	/* rename() uses MoveFile, which fails to overwrite */
		173	#define rename(old,neu) eio__rename (old, neu)
		174
		175	static int
		176	eio__rename (const char *old, const char *neu)
		177	{
		178	if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
		179	return 0;
		180
		181	/* should steal _dosmaperr */
		182	switch (GetLastError ())
		183	{
		184	case ERROR_FILE_NOT_FOUND:
		185	case ERROR_PATH_NOT_FOUND:
		186	case ERROR_INVALID_DRIVE:
		187	case ERROR_NO_MORE_FILES:
		188	case ERROR_BAD_NETPATH:
		189	case ERROR_BAD_NET_NAME:
		190	case ERROR_BAD_PATHNAME:
		191	case ERROR_FILENAME_EXCED_RANGE:
		192	errno = ENOENT;
		193	break;
		194
		195	default:
		196	errno = EACCES;
		197	break;
		198	}
		199
		200	return -1;
		201	}
		202
127	/* we could even stat and see if it exists */	203	/* we could even stat and see if it exists */
128	static int	204	static int
129	symlink (const char *old, const char *neu)	205	symlink (const char *old, const char *neu)
130	{	206	{
131	#if WINVER >= 0x0600	207	#if WINVER >= 0x0600
…		…
138		214
139	return EIO_ERRNO (ENOENT, -1);	215	return EIO_ERRNO (ENOENT, -1);
140	}	216	}
141		217
142	/* POSIX API only */	218	/* POSIX API only */
143	#define CreateHardLink(neu,old) 0	219	#define CreateHardLink(neu,old,flags) 0
144	#define CreateSymbolicLink(neu,old,flags) 0	220	#define CreateSymbolicLink(neu,old,flags) 0
145		221
146	struct statvfs	222	struct statvfs
147	{	223	{
148	int dummy;	224	int dummy;
149	};	225	};
150		226
		227	#define DT_DIR EIO_DT_DIR
		228	#define DT_REG EIO_DT_REG
		229	#define D_NAME(entp) entp.cFileName
		230	#define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
		231
151	#else	232	#else
152		233
153	#include <sys/time.h>	234	#include <sys/time.h>
154	#include <sys/select.h>	235	#include <sys/select.h>
155	#include <sys/statvfs.h>	236	#include <sys/statvfs.h>
156	#include <unistd.h>	237	#include <unistd.h>
157	#include <utime.h>
158	#include <signal.h>	238	#include <signal.h>
159	#include <dirent.h>	239	#include <dirent.h>
160		240
161	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES	241	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
162	#include <sys/mman.h>	242	#include <sys/mman.h>
163	#endif	243	#endif
164		244
		245	#define D_NAME(entp) entp->d_name
		246
165	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */	247	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
166	#if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__	248	#if __FreeBSD__ || __NetBSD__ || __OpenBSD__
167	#define _DIRENT_HAVE_D_TYPE /* sigh */	249	#define _DIRENT_HAVE_D_TYPE /* sigh */
168	#define D_INO(de) (de)->d_fileno	250	#define D_INO(de) (de)->d_fileno
169	#define D_NAMLEN(de) (de)->d_namlen	251	#define D_NAMLEN(de) (de)->d_namlen
170	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600	252	#elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
171	#define D_INO(de) (de)->d_ino	253	#define D_INO(de) (de)->d_ino
…		…
182		264
183	#ifndef EIO_STRUCT_DIRENT	265	#ifndef EIO_STRUCT_DIRENT
184	#define EIO_STRUCT_DIRENT struct dirent	266	#define EIO_STRUCT_DIRENT struct dirent
185	#endif	267	#endif
186		268
		269	#endif
		270
		271	#if HAVE_UTIMES
		272	# include <utime.h>
		273	#endif
		274
		275	#if HAVE_SYS_SYSCALL_H
		276	# include <sys/syscall.h>
		277	#endif
		278
		279	#if HAVE_SYS_PRCTL_H
		280	# include <sys/prctl.h>
187	#endif	281	#endif
188		282
189	#if HAVE_SENDFILE	283	#if HAVE_SENDFILE
190	# if __linux	284	# if __linux
191	# include <sys/sendfile.h>	285	# include <sys/sendfile.h>
…		…
206	#endif	300	#endif
207	#ifndef D_INO	301	#ifndef D_INO
208	# define D_INO(de) 0	302	# define D_INO(de) 0
209	#endif	303	#endif
210	#ifndef D_NAMLEN	304	#ifndef D_NAMLEN
211	# define D_NAMLEN(de) strlen ((de)->d_name)	305	# define D_NAMLEN(entp) strlen (D_NAME (entp))
212	#endif	306	#endif
213		307
214	/* used for struct dirent, AIX doesn't provide it */	308	/* used for struct dirent, AIX doesn't provide it */
215	#ifndef NAME_MAX	309	#ifndef NAME_MAX
216	# define NAME_MAX 4096	310	# define NAME_MAX 4096
…		…
223		317
224	/* buffer size for various temporary buffers */	318	/* buffer size for various temporary buffers */
225	#define EIO_BUFSIZE 65536	319	#define EIO_BUFSIZE 65536
226		320
227	#define dBUF \	321	#define dBUF \
228	char *eio_buf; \
229	ETP_WORKER_LOCK (self); \
230	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	322	char *eio_buf = malloc (EIO_BUFSIZE); \
231	ETP_WORKER_UNLOCK (self); \
232	errno = ENOMEM; \	323	errno = ENOMEM; \
233	if (!eio_buf) \	324	if (!eio_buf) \
234	return -1;	325	return -1
		326
		327	#define FUBd \
		328	free (eio_buf)
235		329
236	#define EIO_TICKS ((1000000 + 1023) >> 10)	330	#define EIO_TICKS ((1000000 + 1023) >> 10)
		331
		332	/*****************************************************************************/
		333
		334	struct tmpbuf
		335	{
		336	void *ptr;
		337	int len;
		338	};
		339
		340	static void *
		341	tmpbuf_get (struct tmpbuf *buf, int len)
		342	{
		343	if (buf->len < len)
		344	{
		345	free (buf->ptr);
		346	buf->ptr = malloc (buf->len = len);
		347	}
		348
		349	return buf->ptr;
		350	}
		351
		352	struct tmpbuf;
		353
		354	#if _POSIX_VERSION >= 200809L
		355	#define HAVE_AT 1
		356	#define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
		357	#ifndef O_SEARCH
		358	#define O_SEARCH O_RDONLY
		359	#endif
		360	#else
		361	#define HAVE_AT 0
		362	static const char *wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path);
		363	#endif
		364
		365	struct eio_pwd
		366	{
		367	#if HAVE_AT
		368	int fd;
		369	#endif
		370	int len;
		371	char str[1]; /* actually, a 0-terminated canonical path */
		372	};
		373
		374	/*****************************************************************************/
237		375
238	#define ETP_PRI_MIN EIO_PRI_MIN	376	#define ETP_PRI_MIN EIO_PRI_MIN
239	#define ETP_PRI_MAX EIO_PRI_MAX	377	#define ETP_PRI_MAX EIO_PRI_MAX
240		378
241	struct etp_worker;	379	struct etp_worker;
…		…
245	static int eio_finish (eio_req *req);	383	static int eio_finish (eio_req *req);
246	#define ETP_FINISH(req) eio_finish (req)	384	#define ETP_FINISH(req) eio_finish (req)
247	static void eio_execute (struct etp_worker *self, eio_req *req);	385	static void eio_execute (struct etp_worker *self, eio_req *req);
248	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)	386	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
249		387
250	#define ETP_WORKER_CLEAR(req) \
251	if (wrk->dbuf) \
252	{ \
253	free (wrk->dbuf); \
254	wrk->dbuf = 0; \
255	} \
256	\
257	if (wrk->dirp) \
258	{ \
259	closedir (wrk->dirp); \
260	wrk->dirp = 0; \
261	}
262
263	#define ETP_WORKER_COMMON \
264	void *dbuf; \
265	DIR *dirp;
266
267	/*****************************************************************************/	388	/*****************************************************************************/
268		389
269	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	390	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
270		391
271	/* calculate time difference in ~1/EIO_TICKS of a second */	392	/* calculate time difference in ~1/EIO_TICKS of a second */
…		…
282	static void (*done_poll_cb) (void);	403	static void (*done_poll_cb) (void);
283		404
284	static unsigned int max_poll_time; /* reslock */	405	static unsigned int max_poll_time; /* reslock */
285	static unsigned int max_poll_reqs; /* reslock */	406	static unsigned int max_poll_reqs; /* reslock */
286		407
287	static volatile unsigned int nreqs; /* reqlock */	408	static unsigned int nreqs; /* reqlock */
288	static volatile unsigned int nready; /* reqlock */	409	static unsigned int nready; /* reqlock */
289	static volatile unsigned int npending; /* reqlock */	410	static unsigned int npending; /* reqlock */
290	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */	411	static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
291	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */	412	static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
292		413
293	static xmutex_t wrklock;	414	static xmutex_t wrklock;
294	static xmutex_t reslock;	415	static xmutex_t reslock;
295	static xmutex_t reqlock;	416	static xmutex_t reqlock;
296	static xcond_t reqwait;	417	static xcond_t reqwait;
297		418
298	#if !HAVE_PREADWRITE
299	/*
300	* make our pread/pwrite emulation safe against themselves, but not against
301	* normal read/write by using a mutex. slows down execution a lot,
302	* but that's your problem, not mine.
303	*/
304	static xmutex_t preadwritelock = X_MUTEX_INIT;
305	#endif
306
307	typedef struct etp_worker	419	typedef struct etp_worker
308	{	420	{
		421	struct tmpbuf tmpbuf;
		422
309	/* locked by wrklock */	423	/* locked by wrklock */
310	struct etp_worker *prev, *next;	424	struct etp_worker *prev, *next;
311		425
312	xthread_t tid;	426	xthread_t tid;
313		427
314	/* locked by reslock, reqlock or wrklock */	428	#ifdef ETP_WORKER_COMMON
315	ETP_REQ *req; /* currently processed request */
316
317	ETP_WORKER_COMMON	429	ETP_WORKER_COMMON
		430	#endif
318	} etp_worker;	431	} etp_worker;
319		432
320	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */	433	static etp_worker wrk_first; /* NOT etp */
321		434
322	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)	435	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
323	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)	436	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
324		437
325	/* worker threads management */	438	/* worker threads management */
326		439
327	static void ecb_cold	440	static void
328	etp_worker_clear (etp_worker *wrk)	441	etp_worker_clear (etp_worker *wrk)
329	{	442	{
330	ETP_WORKER_CLEAR (wrk);
331	}	443	}
332		444
333	static void ecb_cold	445	static void ecb_cold
334	etp_worker_free (etp_worker *wrk)	446	etp_worker_free (etp_worker *wrk)
335	{	447	{
		448	free (wrk->tmpbuf.ptr);
		449
336	wrk->next->prev = wrk->prev;	450	wrk->next->prev = wrk->prev;
337	wrk->prev->next = wrk->next;	451	wrk->prev->next = wrk->next;
338		452
339	free (wrk);	453	free (wrk);
340	}	454	}
…		…
396	} etp_reqq;	510	} etp_reqq;
397		511
398	static etp_reqq req_queue;	512	static etp_reqq req_queue;
399	static etp_reqq res_queue;	513	static etp_reqq res_queue;
400		514
		515	static void ecb_noinline ecb_cold
		516	reqq_init (etp_reqq *q)
		517	{
		518	int pri;
		519
		520	for (pri = 0; pri < ETP_NUM_PRI; ++pri)
		521	q->qs[pri] = q->qe[pri] = 0;
		522
		523	q->size = 0;
		524	}
		525
401	static int ecb_noinline	526	static int ecb_noinline
402	reqq_push (etp_reqq *q, ETP_REQ *req)	527	reqq_push (etp_reqq *q, ETP_REQ *req)
403	{	528	{
404	int pri = req->pri;	529	int pri = req->pri;
405	req->next = 0;	530	req->next = 0;
…		…
439	}	564	}
440		565
441	abort ();	566	abort ();
442	}	567	}
443		568
444	static void ecb_cold	569	static int ecb_cold
445	etp_thread_init (void)	570	etp_init (void (*want_poll)(void), void (*done_poll)(void))
446	{	571	{
447	#if !HAVE_PREADWRITE
448	X_MUTEX_CREATE (preadwritelock);
449	#endif
450	X_MUTEX_CREATE (wrklock);	572	X_MUTEX_CREATE (wrklock);
451	X_MUTEX_CREATE (reslock);	573	X_MUTEX_CREATE (reslock);
452	X_MUTEX_CREATE (reqlock);	574	X_MUTEX_CREATE (reqlock);
453	X_COND_CREATE (reqwait);	575	X_COND_CREATE (reqwait);
454	}
455		576
456	static void ecb_cold	577	reqq_init (&req_queue);
457	etp_atfork_prepare (void)	578	reqq_init (&res_queue);
458	{
459	}
460		579
461	static void ecb_cold	580	wrk_first.next =
462	etp_atfork_parent (void)	581	wrk_first.prev = &wrk_first;
463	{
464	}
465
466	static void ecb_cold
467	etp_atfork_child (void)
468	{
469	ETP_REQ *prv;
470
471	while ((prv = reqq_shift (&req_queue)))
472	ETP_DESTROY (prv);
473
474	while ((prv = reqq_shift (&res_queue)))
475	ETP_DESTROY (prv);
476
477	while (wrk_first.next != &wrk_first)
478	{
479	etp_worker *wrk = wrk_first.next;
480
481	if (wrk->req)
482	ETP_DESTROY (wrk->req);
483
484	etp_worker_clear (wrk);
485	etp_worker_free (wrk);
486	}
487		582
488	started = 0;	583	started = 0;
489	idle = 0;	584	idle = 0;
490	nreqs = 0;	585	nreqs = 0;
491	nready = 0;	586	nready = 0;
492	npending = 0;	587	npending = 0;
493
494	etp_thread_init ();
495	}
496
497	static void ecb_cold
498	etp_once_init (void)
499	{
500	etp_thread_init ();
501	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
502	}
503
504	static int ecb_cold
505	etp_init (void (*want_poll)(void), void (*done_poll)(void))
506	{
507	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
508
509	pthread_once (&doinit, etp_once_init);
510		588
511	want_poll_cb = want_poll;	589	want_poll_cb = want_poll;
512	done_poll_cb = done_poll;	590	done_poll_cb = done_poll;
513		591
514	return 0;	592	return 0;
…		…
554	}	632	}
555		633
556	static void ecb_cold	634	static void ecb_cold
557	etp_end_thread (void)	635	etp_end_thread (void)
558	{	636	{
559	eio_req *req = calloc (1, sizeof (eio_req));	637	eio_req *req = calloc (1, sizeof (eio_req)); /* will be freed by worker */
560		638
561	req->type = -1;	639	req->type = -1;
562	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	640	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
563		641
564	X_LOCK (reqlock);	642	X_LOCK (reqlock);
…		…
891	}	969	}
892		970
893	/*****************************************************************************/	971	/*****************************************************************************/
894	/* work around various missing functions */	972	/* work around various missing functions */
895		973
896	#if !HAVE_PREADWRITE
897	# undef pread
898	# undef pwrite
899	# define pread eio__pread
900	# define pwrite eio__pwrite
901
902	static eio_ssize_t
903	eio__pread (int fd, void *buf, size_t count, off_t offset)
904	{
905	eio_ssize_t res;
906	off_t ooffset;
907
908	X_LOCK (preadwritelock);
909	ooffset = lseek (fd, 0, SEEK_CUR);
910	lseek (fd, offset, SEEK_SET);
911	res = read (fd, buf, count);
912	lseek (fd, ooffset, SEEK_SET);
913	X_UNLOCK (preadwritelock);
914
915	return res;
916	}
917
918	static eio_ssize_t
919	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
920	{
921	eio_ssize_t res;
922	off_t ooffset;
923
924	X_LOCK (preadwritelock);
925	ooffset = lseek (fd, 0, SEEK_CUR);
926	lseek (fd, offset, SEEK_SET);
927	res = write (fd, buf, count);
928	lseek (fd, ooffset, SEEK_SET);
929	X_UNLOCK (preadwritelock);
930
931	return res;
932	}
933	#endif
934
935	#ifndef HAVE_UTIMES	974	#ifndef HAVE_UTIMES
936		975
937	# undef utimes	976	# undef utimes
938	# define utimes(path,times) eio__utimes (path, times)	977	# define utimes(path,times) eio__utimes (path, times)
939		978
…		…
971		1010
972	#if !HAVE_FDATASYNC	1011	#if !HAVE_FDATASYNC
973	# undef fdatasync	1012	# undef fdatasync
974	# define fdatasync(fd) fsync (fd)	1013	# define fdatasync(fd) fsync (fd)
975	#endif	1014	#endif
		1015
		1016	static int
		1017	eio__syncfs (int fd)
		1018	{
		1019	int res;
		1020
		1021	#if HAVE_SYS_SYNCFS
		1022	res = (int)syscall (__NR_syncfs, (int)(fd));
		1023	#else
		1024	res = EIO_ENOSYS ();
		1025	#endif
		1026
		1027	if (res < 0 && errno == ENOSYS && fd >= 0)
		1028	sync ();
		1029
		1030	return res;
		1031	}
976		1032
977	/* sync_file_range always needs emulation */	1033	/* sync_file_range always needs emulation */
978	static int	1034	static int
979	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)	1035	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
980	{	1036	{
…		…
1003	}	1059	}
1004		1060
1005	static int	1061	static int
1006	eio__fallocate (int fd, int mode, off_t offset, size_t len)	1062	eio__fallocate (int fd, int mode, off_t offset, size_t len)
1007	{	1063	{
1008	#if HAVE_FALLOCATE	1064	#if HAVE_LINUX_FALLOCATE
1009	return fallocate (fd, mode, offset, len);	1065	return fallocate (fd, mode, offset, len);
1010	#else	1066	#else
1011	errno = ENOSYS;	1067	return EIO_ENOSYS ();
1012	return -1;
1013	#endif	1068	#endif
1014	}	1069	}
1015		1070
1016	#if !HAVE_READAHEAD	1071	#if !HAVE_READAHEAD
1017	# undef readahead	1072	# undef readahead
…		…
1030	pread (fd, eio_buf, len, offset);	1085	pread (fd, eio_buf, len, offset);
1031	offset += len;	1086	offset += len;
1032	todo -= len;	1087	todo -= len;
1033	}	1088	}
1034		1089
1035	errno = 0;	1090	FUBd;
		1091
		1092	/* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
		1093	/* but not for e.g. EIO or eof, so we also never fail */
1036	return count;	1094	return 0;
1037	}	1095	}
1038		1096
1039	#endif	1097	#endif
1040		1098
1041	/* sendfile always needs emulation */	1099	/* sendfile always needs emulation */
1042	static eio_ssize_t	1100	static eio_ssize_t
1043	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	1101	eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
1044	{	1102	{
1045	eio_ssize_t written = 0;	1103	eio_ssize_t written = 0;
1046	eio_ssize_t res;	1104	eio_ssize_t res;
1047		1105
1048	if (!count)	1106	if (!count)
…		…
1076		1134
1077	/* according to source inspection, this is correct, and useful behaviour */	1135	/* according to source inspection, this is correct, and useful behaviour */
1078	if (sbytes)	1136	if (sbytes)
1079	res = sbytes;	1137	res = sbytes;
1080		1138
1081	# elif defined (__APPLE__)	1139	# elif defined __APPLE__
1082	off_t sbytes = count;	1140	off_t sbytes = count;
1083	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);	1141	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
1084		1142
1085	/* according to the manpage, sbytes is always valid */	1143	/* according to the manpage, sbytes is always valid */
1086	if (sbytes)	1144	if (sbytes)
…		…
1113	HANDLE h = TO_SOCKET (ifd);	1171	HANDLE h = TO_SOCKET (ifd);
1114	SetFilePointer (h, offset, 0, FILE_BEGIN);	1172	SetFilePointer (h, offset, 0, FILE_BEGIN);
1115	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);	1173	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
1116		1174
1117	#else	1175	#else
1118	res = -1;	1176	res = EIO_ENOSYS ();
1119	errno = ENOSYS;
1120	#endif	1177	#endif
1121		1178
1122	/* we assume sendfile can copy at least 128mb in one go */	1179	/* we assume sendfile can copy at least 128mb in one go */
1123	if (res <= 128 * 1024 * 1024)	1180	if (res <= 128 * 1024 * 1024)
1124	{	1181	{
…		…
1184		1241
1185	offset += cnt;	1242	offset += cnt;
1186	res += cnt;	1243	res += cnt;
1187	count -= cnt;	1244	count -= cnt;
1188	}	1245	}
		1246
		1247	FUBd;
1189	}	1248	}
1190		1249
1191	return res;	1250	return res;
1192	}	1251	}
1193		1252
…		…
1309		1368
1310	/*****************************************************************************/	1369	/*****************************************************************************/
1311	/* requests implemented outside eio_execute, because they are so large */	1370	/* requests implemented outside eio_execute, because they are so large */
1312		1371
1313	static void	1372	static void
1314	eio__realpath (eio_req *req, etp_worker *self)	1373	eio__lseek (eio_req *req)
1315	{	1374	{
1316	char *rel = req->ptr1;	1375	/* this usually gets optimised away completely, or your compiler sucks, */
		1376	/* or the whence constants really are not 0, 1, 2 */
		1377	int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
		1378	: req->int2 == EIO_SEEK_CUR ? SEEK_CUR
		1379	: req->int2 == EIO_SEEK_END ? SEEK_END
		1380	: req->int2;
		1381
		1382	req->offs = lseek (req->int1, req->offs, whence);
		1383	req->result = req->offs == (off_t)-1 ? -1 : 0;
		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;
1317	char *res;	1391	char *res;
1318	char *tmp1, *tmp2;	1392	char *tmp1, *tmp2;
1319	#if SYMLOOP_MAX > 32	1393	#if SYMLOOP_MAX > 32
1320	int symlinks = SYMLOOP_MAX;	1394	int symlinks = SYMLOOP_MAX;
1321	#else	1395	#else
1322	int symlinks = 32;	1396	int symlinks = 32;
1323	#endif	1397	#endif
1324		1398
1325	req->result = -1;
1326
1327	errno = EINVAL;	1399	errno = EINVAL;
1328	if (!rel)	1400	if (!rel)
1329	return;	1401	return -1;
1330		1402
1331	errno = ENOENT;	1403	errno = ENOENT;
1332	if (!*rel)	1404	if (!*rel)
1333	return;	1405	return -1;
1334		1406
1335	if (!req->ptr2)	1407	res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
1336	{
1337	X_LOCK (wrklock);
1338	req->flags |= EIO_FLAG_PTR2_FREE;
1339	X_UNLOCK (wrklock);
1340	req->ptr2 = malloc (PATH_MAX * 3);
1341
1342	errno = ENOMEM;
1343	if (!req->ptr2)
1344	return;
1345	}
1346
1347	res = req->ptr2;
1348	tmp1 = res + PATH_MAX;	1408	tmp1 = res + PATH_MAX;
1349	tmp2 = tmp1 + PATH_MAX;	1409	tmp2 = tmp1 + PATH_MAX;
1350		1410
1351	#if 0 /* disabled, the musl way to do things is just too racy */	1411	#if 0 /* disabled, the musl way to do things is just too racy */
1352	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)	1412	#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
…		…
1371	#endif	1431	#endif
1372	#endif	1432	#endif
1373		1433
1374	if (*rel != '/')	1434	if (*rel != '/')
1375	{	1435	{
		1436	int len;
		1437
		1438	errno = ENOENT;
		1439	if (wd == EIO_INVALID_WD)
		1440	return -1;
		1441
		1442	if (wd == EIO_CWD)
		1443	{
1376	if (!getcwd (res, PATH_MAX))	1444	if (!getcwd (res, PATH_MAX))
1377	return;	1445	return -1;
		1446
		1447	len = strlen (res);
		1448	}
		1449	else
		1450	memcpy (res, wd->str, len = wd->len);
1378		1451
1379	if (res [1]) /* only use if not / */	1452	if (res [1]) /* only use if not / */
1380	res += strlen (res);	1453	res += len;
1381	}	1454	}
1382		1455
1383	while (*rel)	1456	while (*rel)
1384	{	1457	{
1385	eio_ssize_t len, linklen;	1458	eio_ssize_t len, linklen;
1386	char *beg = rel;	1459	const char *beg = rel;
1387		1460
1388	while (*rel && *rel != '/')	1461	while (*rel && *rel != '/')
1389	++rel;	1462	++rel;
1390		1463
1391	len = rel - beg;	1464	len = rel - beg;
…		…
1403		1476
1404	if (beg [1] == '.' && len == 2)	1477	if (beg [1] == '.' && len == 2)
1405	{	1478	{
1406	/* .. - back up one component, if possible */	1479	/* .. - back up one component, if possible */
1407		1480
1408	while (res != req->ptr2)	1481	while (res != tmpbuf->ptr)
1409	if (*--res == '/')	1482	if (*--res == '/')
1410	break;	1483	break;
1411		1484
1412	continue;	1485	continue;
1413	}	1486	}
1414	}	1487	}
1415		1488
1416	errno = ENAMETOOLONG;	1489	errno = ENAMETOOLONG;
1417	if (res + 1 + len + 1 >= tmp1)	1490	if (res + 1 + len + 1 >= tmp1)
1418	return;	1491	return -1;
1419		1492
1420	/* copy one component */	1493	/* copy one component */
1421	*res = '/';	1494	*res = '/';
1422	memcpy (res + 1, beg, len);	1495	memcpy (res + 1, beg, len);
1423		1496
1424	/* zero-terminate, for readlink */	1497	/* zero-terminate, for readlink */
1425	res [len + 1] = 0;	1498	res [len + 1] = 0;
1426		1499
1427	/* now check if it's a symlink */	1500	/* now check if it's a symlink */
1428	linklen = readlink (req->ptr2, tmp1, PATH_MAX);	1501	linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX);
1429		1502
1430	if (linklen < 0)	1503	if (linklen < 0)
1431	{	1504	{
1432	if (errno != EINVAL)	1505	if (errno != EINVAL)
1433	return;	1506	return -1;
1434		1507
1435	/* it's a normal directory. hopefully */	1508	/* it's a normal directory. hopefully */
1436	res += len + 1;	1509	res += len + 1;
1437	}	1510	}
1438	else	1511	else
…		…
1440	/* yay, it was a symlink - build new path in tmp2 */	1513	/* yay, it was a symlink - build new path in tmp2 */
1441	int rellen = strlen (rel);	1514	int rellen = strlen (rel);
1442		1515
1443	errno = ENAMETOOLONG;	1516	errno = ENAMETOOLONG;
1444	if (linklen + 1 + rellen >= PATH_MAX)	1517	if (linklen + 1 + rellen >= PATH_MAX)
1445	return;	1518	return -1;
1446		1519
1447	errno = ELOOP;	1520	errno = ELOOP;
1448	if (!--symlinks)	1521	if (!--symlinks)
1449	return;	1522	return -1;
1450		1523
1451	if (*tmp1 == '/')	1524	if (*tmp1 == '/')
1452	res = req->ptr2; /* symlink resolves to an absolute path */	1525	res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1453		1526
1454	/* we need to be careful, as rel might point into tmp2 already */	1527	/* we need to be careful, as rel might point into tmp2 already */
1455	memmove (tmp2 + linklen + 1, rel, rellen + 1);	1528	memmove (tmp2 + linklen + 1, rel, rellen + 1);
1456	tmp2 [linklen] = '/';	1529	tmp2 [linklen] = '/';
1457	memcpy (tmp2, tmp1, linklen);	1530	memcpy (tmp2, tmp1, linklen);
…		…
1459	rel = tmp2;	1532	rel = tmp2;
1460	}	1533	}
1461	}	1534	}
1462		1535
1463	/* special case for the lone root path */	1536	/* special case for the lone root path */
1464	if (res == req->ptr2)	1537	if (res == tmpbuf->ptr)
1465	*res++ = '/';	1538	*res++ = '/';
1466		1539
1467	req->result = res - (char *)req->ptr2;	1540	return res - (char *)tmpbuf->ptr;
1468
1469	done:
1470	req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */
1471	}	1541	}
1472		1542
1473	static signed char	1543	static signed char
1474	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)	1544	eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1475	{	1545	{
…		…
1483		1553
1484	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */	1554	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1485	#define EIO_SORT_FAST 60 /* when to only use insertion sort */	1555	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1486		1556
1487	static void	1557	static void
1488	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1558	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1489	{	1559	{
1490	unsigned char bits [9 + sizeof (ino_t) * 8];	1560	unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1491	unsigned char *bit = bits;	1561	unsigned char *bit = bits;
1492		1562
1493	assert (CHAR_BIT == 8);	1563	assert (CHAR_BIT == 8);
1494	assert (sizeof (eio_dirent) * 8 < 256);	1564	assert (sizeof (eio_dirent) * 8 < 256);
1495	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */	1565	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
…		…
1497		1567
1498	if (size <= EIO_SORT_FAST)	1568	if (size <= EIO_SORT_FAST)
1499	return;	1569	return;
1500		1570
1501	/* first prepare an array of bits to test in our radix sort */	1571	/* first prepare an array of bits to test in our radix sort */
1502	/* try to take endianness into account, as well as differences in ino_t sizes */	1572	/* try to take endianness into account, as well as differences in eio_ino_t sizes */
1503	/* inode_bits must contain all inodes ORed together */	1573	/* inode_bits must contain all inodes ORed together */
1504	/* which is used to skip bits that are 0 everywhere, which is very common */	1574	/* which is used to skip bits that are 0 everywhere, which is very common */
1505	{	1575	{
1506	ino_t endianness;	1576	eio_ino_t endianness;
1507	int i, j;	1577	int i, j;
1508		1578
1509	/* we store the byte offset of byte n into byte n of "endianness" */	1579	/* we store the byte offset of byte n into byte n of "endianness" */
1510	for (i = 0; i < sizeof (ino_t); ++i)	1580	for (i = 0; i < sizeof (eio_ino_t); ++i)
1511	((unsigned char *)&endianness)[i] = i;	1581	((unsigned char *)&endianness)[i] = i;
1512		1582
1513	*bit++ = 0;	1583	*bit++ = 0;
1514		1584
1515	for (i = 0; i < sizeof (ino_t); ++i)	1585	for (i = 0; i < sizeof (eio_ino_t); ++i)
1516	{	1586	{
1517	/* shifting off the byte offsets out of "endianness" */	1587	/* shifting off the byte offsets out of "endianness" */
1518	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;	1588	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1519	endianness >>= 8;	1589	endianness >>= 8;
1520		1590
1521	for (j = 0; j < 8; ++j)	1591	for (j = 0; j < 8; ++j)
1522	if (inode_bits & (((ino_t)1) << (i * 8 + j)))	1592	if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1523	*bit++ = offs + j;	1593	*bit++ = offs + j;
1524	}	1594	}
1525		1595
1526	for (j = 0; j < 8; ++j)	1596	for (j = 0; j < 8; ++j)
1527	if (score_bits & (1 << j))	1597	if (score_bits & (1 << j))
1528	*bit++ = offsetof (eio_dirent, score) * 8 + j;	1598	*bit++ = offsetof (eio_dirent, score) * 8 + j;
1529	}	1599	}
1530		1600
1531	/* now actually do the sorting (a variant of MSD radix sort) */	1601	/* now actually do the sorting (a variant of MSD radix sort) */
1532	{	1602	{
1533	eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;	1603	eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1534	eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;	1604	eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1535	unsigned char *bit_stk [9 + sizeof (ino_t) * 8];	1605	unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1536	int stk_idx = 0;	1606	int stk_idx = 0;
1537		1607
1538	base_stk [stk_idx] = dents;	1608	base_stk [stk_idx] = dents;
1539	end_stk [stk_idx] = dents + size;	1609	end_stk [stk_idx] = dents + size;
1540	bit_stk [stk_idx] = bit - 1;	1610	bit_stk [stk_idx] = bit - 1;
…		…
1619	}	1689	}
1620	}	1690	}
1621	}	1691	}
1622		1692
1623	static void	1693	static void
1624	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)	1694	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1625	{	1695	{
1626	if (size <= 1)	1696	if (size <= 1)
1627	return; /* our insertion sort relies on size > 0 */	1697	return; /* our insertion sort relies on size > 0 */
1628		1698
1629	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */	1699	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
…		…
1637		1707
1638	/* read a full directory */	1708	/* read a full directory */
1639	static void	1709	static void
1640	eio__scandir (eio_req *req, etp_worker *self)	1710	eio__scandir (eio_req *req, etp_worker *self)
1641	{	1711	{
1642	DIR *dirp;
1643	EIO_STRUCT_DIRENT *entp;
1644	char *name, *names;	1712	char *name, *names;
1645	int namesalloc = 4096;	1713	int namesalloc = 4096 - sizeof (void *) * 4;
1646	int namesoffs = 0;	1714	int namesoffs = 0;
1647	int flags = req->int1;	1715	int flags = req->int1;
1648	eio_dirent *dents = 0;	1716	eio_dirent *dents = 0;
1649	int dentalloc = 128;	1717	int dentalloc = 128;
1650	int dentoffs = 0;	1718	int dentoffs = 0;
1651	ino_t inode_bits = 0;	1719	eio_ino_t inode_bits = 0;
		1720	#ifdef _WIN32
		1721	HANDLE dirp;
		1722	WIN32_FIND_DATA entp;
		1723	#else
		1724	DIR *dirp;
		1725	EIO_STRUCT_DIRENT *entp;
		1726	#endif
1652		1727
1653	req->result = -1;	1728	req->result = -1;
1654		1729
1655	if (!(flags & EIO_READDIR_DENTS))	1730	if (!(flags & EIO_READDIR_DENTS))
1656	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);	1731	flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1657		1732
1658	X_LOCK (wrklock);	1733	#ifdef _WIN32
1659	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1734	{
		1735	int len = strlen ((const char *)req->ptr1);
		1736	char *path = malloc (MAX_PATH);
		1737	const char *fmt;
		1738	const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		1739
		1740	if (!len)
		1741	fmt = "./*";
		1742	else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
		1743	fmt = "%s*";
		1744	else
		1745	fmt = "%s/*";
		1746
		1747	_snprintf (path, MAX_PATH, fmt, reqpath);
		1748	dirp = FindFirstFile (path, &entp);
		1749	free (path);
		1750
		1751	if (dirp == INVALID_HANDLE_VALUE)
		1752	{
		1753	/* should steal _dosmaperr */
		1754	switch (GetLastError ())
		1755	{
		1756	case ERROR_FILE_NOT_FOUND:
		1757	req->result = 0;
		1758	break;
		1759
		1760	case ERROR_INVALID_NAME:
		1761	case ERROR_PATH_NOT_FOUND:
		1762	case ERROR_NO_MORE_FILES:
		1763	errno = ENOENT;
		1764	break;
		1765
		1766	case ERROR_NOT_ENOUGH_MEMORY:
		1767	errno = ENOMEM;
		1768	break;
		1769
		1770	default:
		1771	errno = EINVAL;
		1772	break;
		1773	}
		1774
		1775	return;
		1776	}
		1777	}
		1778	#else
		1779	#if HAVE_AT
		1780	if (req->wd)
		1781	{
		1782	int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		1783
		1784	if (fd < 0)
		1785	return;
		1786
		1787	dirp = fdopendir (fd);
		1788
		1789	if (!dirp)
		1790	close (fd);
		1791	}
		1792	else
1660	self->dirp = dirp = opendir (req->ptr1);	1793	dirp = opendir (req->ptr1);
		1794	#else
		1795	dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
		1796	#endif
		1797
		1798	if (!dirp)
		1799	return;
		1800	#endif
1661		1801
1662	if (req->flags & EIO_FLAG_PTR1_FREE)	1802	if (req->flags & EIO_FLAG_PTR1_FREE)
1663	free (req->ptr1);	1803	free (req->ptr1);
1664		1804
1665	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;	1805	req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1666	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;	1806	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1667	req->ptr2 = names = malloc (namesalloc);	1807	req->ptr2 = names = malloc (namesalloc);
1668	X_UNLOCK (wrklock);
1669		1808
1670	if (dirp && names && (!flags || dents))	1809	if (!names || (flags && !dents))
		1810	return;
		1811
1671	for (;;)	1812	for (;;)
1672	{	1813	{
		1814	int done;
		1815
		1816	#ifdef _WIN32
		1817	done = !dirp;
		1818	#else
1673	errno = 0;	1819	errno = 0;
1674	entp = readdir (dirp);	1820	entp = readdir (dirp);
		1821	done = !entp;
		1822	#endif
1675		1823
1676	if (!entp)	1824	if (done)
1677	{	1825	{
		1826	#ifndef _WIN32
		1827	int old_errno = errno;
		1828	closedir (dirp);
		1829	errno = old_errno;
		1830
1678	if (errno)	1831	if (errno)
1679	break;	1832	break;
		1833	#endif
1680		1834
1681	/* sort etc. */	1835	/* sort etc. */
1682	req->int1 = flags;	1836	req->int1 = flags;
1683	req->result = dentoffs;	1837	req->result = dentoffs;
1684		1838
1685	if (flags & EIO_READDIR_STAT_ORDER)	1839	if (flags & EIO_READDIR_STAT_ORDER)
1686	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);	1840	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1687	else if (flags & EIO_READDIR_DIRS_FIRST)	1841	else if (flags & EIO_READDIR_DIRS_FIRST)
1688	if (flags & EIO_READDIR_FOUND_UNKNOWN)	1842	if (flags & EIO_READDIR_FOUND_UNKNOWN)
1689	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */	1843	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1690	else	1844	else
		1845	{
		1846	/* in this case, all is known, and we just put dirs first and sort them */
		1847	eio_dirent *oth = dents + dentoffs;
		1848	eio_dirent *dir = dents;
		1849
		1850	/* now partition dirs to the front, and non-dirs to the back */
		1851	/* by walking from both sides and swapping if necessary */
		1852	while (oth > dir)
		1853	{
		1854	if (dir->type == EIO_DT_DIR)
		1855	++dir;
		1856	else if ((--oth)->type == EIO_DT_DIR)
		1857	{
		1858	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
		1859
		1860	++dir;
		1861	}
		1862	}
		1863
		1864	/* now sort the dirs only (dirs all have the same score) */
		1865	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1866	}
		1867
		1868	break;
		1869	}
		1870
		1871	/* now add the entry to our list(s) */
		1872	name = D_NAME (entp);
		1873
		1874	/* skip . and .. entries */
		1875	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1876	{
		1877	int len = D_NAMLEN (entp) + 1;
		1878
		1879	while (ecb_expect_false (namesoffs + len > namesalloc))
		1880	{
		1881	namesalloc *= 2;
		1882	req->ptr2 = names = realloc (names, namesalloc);
		1883
		1884	if (!names)
		1885	break;
		1886	}
		1887
		1888	memcpy (names + namesoffs, name, len);
		1889
		1890	if (dents)
		1891	{
		1892	struct eio_dirent *ent;
		1893
		1894	if (ecb_expect_false (dentoffs == dentalloc))
1691	{	1895	{
1692	/* in this case, all is known, and we just put dirs first and sort them */	1896	dentalloc *= 2;
		1897	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1898
		1899	if (!dents)
		1900	break;
		1901	}
		1902
1693	eio_dirent *oth = dents + dentoffs;	1903	ent = dents + dentoffs;
1694	eio_dirent *dir = dents;
1695		1904
1696	/* now partition dirs to the front, and non-dirs to the back */	1905	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1697	/* by walking from both sides and swapping if necessary */	1906	ent->namelen = len - 1;
1698	while (oth > dir)	1907	ent->inode = D_INO (entp);
		1908
		1909	inode_bits |= ent->inode;
		1910
		1911	switch (D_TYPE (entp))
		1912	{
		1913	default:
		1914	ent->type = EIO_DT_UNKNOWN;
		1915	flags |= EIO_READDIR_FOUND_UNKNOWN;
		1916	break;
		1917
		1918	#ifdef DT_FIFO
		1919	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1920	#endif
		1921	#ifdef DT_CHR
		1922	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1923	#endif
		1924	#ifdef DT_MPC
		1925	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1926	#endif
		1927	#ifdef DT_DIR
		1928	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1929	#endif
		1930	#ifdef DT_NAM
		1931	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1932	#endif
		1933	#ifdef DT_BLK
		1934	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1935	#endif
		1936	#ifdef DT_MPB
		1937	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1938	#endif
		1939	#ifdef DT_REG
		1940	case DT_REG: ent->type = EIO_DT_REG; break;
		1941	#endif
		1942	#ifdef DT_NWK
		1943	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1944	#endif
		1945	#ifdef DT_CMP
		1946	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1947	#endif
		1948	#ifdef DT_LNK
		1949	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1950	#endif
		1951	#ifdef DT_SOCK
		1952	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1953	#endif
		1954	#ifdef DT_DOOR
		1955	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1956	#endif
		1957	#ifdef DT_WHT
		1958	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1959	#endif
		1960	}
		1961
		1962	ent->score = 7;
		1963
		1964	if (flags & EIO_READDIR_DIRS_FIRST)
		1965	{
		1966	if (ent->type == EIO_DT_UNKNOWN)
1699	{	1967	{
1700	if (dir->type == EIO_DT_DIR)	1968	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1701	++dir;	1969	ent->score = 1;
1702	else if ((--oth)->type == EIO_DT_DIR)	1970	else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1703	{	1971	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1704	eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1705
1706	++dir;
1707	}
1708	}	1972	}
1709		1973	else if (ent->type == EIO_DT_DIR)
1710	/* now sort the dirs only (dirs all have the same score) */	1974	ent->score = 0;
1711	eio_dent_sort (dents, dir - dents, 0, inode_bits);
1712	}	1975	}
1713
1714	break;
1715	}
1716
1717	/* now add the entry to our list(s) */
1718	name = entp->d_name;
1719
1720	/* skip . and .. entries */
1721	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1722	{
1723	int len = D_NAMLEN (entp) + 1;
1724
1725	while (ecb_expect_false (namesoffs + len > namesalloc))
1726	{
1727	namesalloc *= 2;
1728	X_LOCK (wrklock);
1729	req->ptr2 = names = realloc (names, namesalloc);
1730	X_UNLOCK (wrklock);
1731
1732	if (!names)
1733	break;
1734	}	1976	}
1735		1977
1736	memcpy (names + namesoffs, name, len);
1737
1738	if (dents)
1739	{
1740	struct eio_dirent *ent;
1741
1742	if (ecb_expect_false (dentoffs == dentalloc))
1743	{
1744	dentalloc *= 2;
1745	X_LOCK (wrklock);
1746	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1747	X_UNLOCK (wrklock);
1748
1749	if (!dents)
1750	break;
1751	}
1752
1753	ent = dents + dentoffs;
1754
1755	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1756	ent->namelen = len - 1;
1757	ent->inode = D_INO (entp);
1758
1759	inode_bits |= ent->inode;
1760
1761	switch (D_TYPE (entp))
1762	{
1763	default:
1764	ent->type = EIO_DT_UNKNOWN;
1765	flags |= EIO_READDIR_FOUND_UNKNOWN;
1766	break;
1767
1768	#ifdef DT_FIFO
1769	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1770	#endif
1771	#ifdef DT_CHR
1772	case DT_CHR: ent->type = EIO_DT_CHR; break;
1773	#endif
1774	#ifdef DT_MPC
1775	case DT_MPC: ent->type = EIO_DT_MPC; break;
1776	#endif
1777	#ifdef DT_DIR
1778	case DT_DIR: ent->type = EIO_DT_DIR; break;
1779	#endif
1780	#ifdef DT_NAM
1781	case DT_NAM: ent->type = EIO_DT_NAM; break;
1782	#endif
1783	#ifdef DT_BLK
1784	case DT_BLK: ent->type = EIO_DT_BLK; break;
1785	#endif
1786	#ifdef DT_MPB
1787	case DT_MPB: ent->type = EIO_DT_MPB; break;
1788	#endif
1789	#ifdef DT_REG
1790	case DT_REG: ent->type = EIO_DT_REG; break;
1791	#endif
1792	#ifdef DT_NWK
1793	case DT_NWK: ent->type = EIO_DT_NWK; break;
1794	#endif
1795	#ifdef DT_CMP
1796	case DT_CMP: ent->type = EIO_DT_CMP; break;
1797	#endif
1798	#ifdef DT_LNK
1799	case DT_LNK: ent->type = EIO_DT_LNK; break;
1800	#endif
1801	#ifdef DT_SOCK
1802	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1803	#endif
1804	#ifdef DT_DOOR
1805	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1806	#endif
1807	#ifdef DT_WHT
1808	case DT_WHT: ent->type = EIO_DT_WHT; break;
1809	#endif
1810	}
1811
1812	ent->score = 7;
1813
1814	if (flags & EIO_READDIR_DIRS_FIRST)
1815	{
1816	if (ent->type == EIO_DT_UNKNOWN)
1817	{
1818	if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1819	ent->score = 1;
1820	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1821	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1822	}
1823	else if (ent->type == EIO_DT_DIR)
1824	ent->score = 0;
1825	}
1826	}
1827
1828	namesoffs += len;	1978	namesoffs += len;
1829	++dentoffs;	1979	++dentoffs;
1830	}	1980	}
1831		1981
1832	if (EIO_CANCELLED (req))	1982	if (EIO_CANCELLED (req))
1833	{	1983	{
1834	errno = ECANCELED;	1984	errno = ECANCELED;
1835	break;	1985	break;
1836	}	1986	}
		1987
		1988	#ifdef _WIN32
		1989	if (!FindNextFile (dirp, &entp))
		1990	{
		1991	FindClose (dirp);
		1992	dirp = 0;
1837	}	1993	}
		1994	#endif
		1995	}
1838	}	1996	}
		1997
		1998	/*****************************************************************************/
		1999	/* working directory stuff */
		2000	/* various deficiencies in the posix 2008 api force us to */
		2001	/* keep the absolute path in string form at all times */
		2002	/* fuck yeah. */
		2003
		2004	#if !HAVE_AT
		2005
		2006	/* a bit like realpath, but usually faster because it doesn'T have to return */
		2007	/* an absolute or canonical path */
		2008	static const char *
		2009	wd_expand (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		2010	{
		2011	if (!wd || *path == '/')
		2012	return path;
		2013
		2014	if (path [0] == '.' && !path [1])
		2015	return wd->str;
		2016
		2017	{
		2018	int l1 = wd->len;
		2019	int l2 = strlen (path);
		2020
		2021	char *res = tmpbuf_get (tmpbuf, l1 + l2 + 2);
		2022
		2023	memcpy (res, wd->str, l1);
		2024	res [l1] = '/';
		2025	memcpy (res + l1 + 1, path, l2 + 1);
		2026
		2027	return res;
		2028	}
		2029	}
		2030
		2031	#endif
		2032
		2033	static eio_wd
		2034	eio__wd_open_sync (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
		2035	{
		2036	int fd;
		2037	eio_wd res;
		2038	int len = eio__realpath (tmpbuf, wd, path);
		2039
		2040	if (len < 0)
		2041	return EIO_INVALID_WD;
		2042
		2043	#if HAVE_AT
		2044	fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY);
		2045
		2046	if (fd < 0)
		2047	return EIO_INVALID_WD;
		2048	#endif
		2049
		2050	res = malloc (sizeof (*res) + len); /* one extra 0-byte */
		2051
		2052	#if HAVE_AT
		2053	res->fd = fd;
		2054	#endif
		2055
		2056	res->len = len;
		2057	memcpy (res->str, tmpbuf->ptr, len);
		2058	res->str [len] = 0;
		2059
		2060	return res;
		2061	}
		2062
		2063	eio_wd
		2064	eio_wd_open_sync (eio_wd wd, const char *path)
		2065	{
		2066	struct tmpbuf tmpbuf = { 0 };
		2067	wd = eio__wd_open_sync (&tmpbuf, wd, path);
		2068	free (tmpbuf.ptr);
		2069
		2070	return wd;
		2071	}
		2072
		2073	void
		2074	eio_wd_close_sync (eio_wd wd)
		2075	{
		2076	if (wd != EIO_INVALID_WD && wd != EIO_CWD)
		2077	{
		2078	#if HAVE_AT
		2079	close (wd->fd);
		2080	#endif
		2081	free (wd);
		2082	}
		2083	}
		2084
		2085	#if HAVE_AT
		2086
		2087	/* they forgot these */
		2088
		2089	static int
		2090	eio__truncateat (int dirfd, const char *path, off_t length)
		2091	{
		2092	int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC);
		2093	int res;
		2094
		2095	if (fd < 0)
		2096	return fd;
		2097
		2098	res = ftruncate (fd, length);
		2099	close (fd);
		2100	return res;
		2101	}
		2102
		2103	static int
		2104	eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
		2105	{
		2106	int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC);
		2107	int res;
		2108
		2109	if (fd < 0)
		2110	return fd;
		2111
		2112	res = fstatvfs (fd, buf);
		2113	close (fd);
		2114	return res;
		2115
		2116	}
		2117
		2118	#endif
1839		2119
1840	/*****************************************************************************/	2120	/*****************************************************************************/
1841		2121
1842	#define ALLOC(len) \	2122	#define ALLOC(len) \
1843	if (!req->ptr2) \	2123	if (!req->ptr2) \
…		…
1852	req->result = -1; \	2132	req->result = -1; \
1853	break; \	2133	break; \
1854	} \	2134	} \
1855	}	2135	}
1856		2136
		2137	static void ecb_noinline ecb_cold
		2138	etp_proc_init (void)
		2139	{
		2140	#if HAVE_PRCTL_SET_NAME
		2141	/* provide a more sensible "thread name" */
		2142	char name[16 + 1];
		2143	const int namelen = sizeof (name) - 1;
		2144	int len;
		2145
		2146	prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0);
		2147	name [namelen] = 0;
		2148	len = strlen (name);
		2149	strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio");
		2150	prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
		2151	#endif
		2152	}
		2153
1857	X_THREAD_PROC (etp_proc)	2154	X_THREAD_PROC (etp_proc)
1858	{	2155	{
1859	ETP_REQ *req;	2156	ETP_REQ *req;
1860	struct timespec ts;	2157	struct timespec ts;
1861	etp_worker *self = (etp_worker *)thr_arg;	2158	etp_worker *self = (etp_worker *)thr_arg;
1862	int timeout;	2159
		2160	etp_proc_init ();
1863		2161
1864	/* try to distribute timeouts somewhat evenly */	2162	/* try to distribute timeouts somewhat evenly */
1865	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	2163	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1866		2164
1867	for (;;)	2165	for (;;)
…		…
1870		2168
1871	X_LOCK (reqlock);	2169	X_LOCK (reqlock);
1872		2170
1873	for (;;)	2171	for (;;)
1874	{	2172	{
1875	self->req = req = reqq_shift (&req_queue);	2173	req = reqq_shift (&req_queue);
1876		2174
1877	if (req)	2175	if (req)
1878	break;	2176	break;
1879		2177
1880	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */	2178	if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */
…		…
1918	++npending;	2216	++npending;
1919		2217
1920	if (!reqq_push (&res_queue, req) && want_poll_cb)	2218	if (!reqq_push (&res_queue, req) && want_poll_cb)
1921	want_poll_cb ();	2219	want_poll_cb ();
1922		2220
1923	self->req = 0;
1924	etp_worker_clear (self);	2221	etp_worker_clear (self);
1925		2222
1926	X_UNLOCK (reslock);	2223	X_UNLOCK (reslock);
1927	}	2224	}
1928		2225
1929	quit:	2226	quit:
		2227	free (req);
		2228
1930	X_LOCK (wrklock);	2229	X_LOCK (wrklock);
1931	etp_worker_free (self);	2230	etp_worker_free (self);
1932	X_UNLOCK (wrklock);	2231	X_UNLOCK (wrklock);
1933		2232
1934	return 0;	2233	return 0;
…		…
1946	eio_api_destroy (eio_req *req)	2245	eio_api_destroy (eio_req *req)
1947	{	2246	{
1948	free (req);	2247	free (req);
1949	}	2248	}
1950		2249
1951	#define REQ(rtype) \	2250	#define REQ(rtype) \
1952	eio_req *req; \	2251	eio_req *req; \
1953	\	2252	\
1954	req = (eio_req *)calloc (1, sizeof *req); \	2253	req = (eio_req *)calloc (1, sizeof *req); \
1955	if (!req) \	2254	if (!req) \
1956	return 0; \	2255	return 0; \
…		…
1973	}	2272	}
1974		2273
1975	static void	2274	static void
1976	eio_execute (etp_worker *self, eio_req *req)	2275	eio_execute (etp_worker *self, eio_req *req)
1977	{	2276	{
		2277	#if HAVE_AT
		2278	int dirfd;
		2279	#else
		2280	const char *path;
		2281	#endif
		2282
1978	if (ecb_expect_false (EIO_CANCELLED (req)))	2283	if (ecb_expect_false (EIO_CANCELLED (req)))
1979	{	2284	{
1980	req->result = -1;	2285	req->result = -1;
1981	req->errorno = ECANCELED;	2286	req->errorno = ECANCELED;
1982	return;	2287	return;
1983	}	2288	}
1984		2289
		2290	if (ecb_expect_false (req->wd == EIO_INVALID_WD))
		2291	{
		2292	req->result = -1;
		2293	req->errorno = ENOENT;
		2294	return;
		2295	}
		2296
		2297	if (req->type >= EIO_OPEN)
		2298	{
		2299	#if HAVE_AT
		2300	dirfd = WD2FD (req->wd);
		2301	#else
		2302	path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
		2303	#endif
		2304	}
		2305
1985	switch (req->type)	2306	switch (req->type)
1986	{	2307	{
		2308	case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
		2309	req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
		2310	break;
		2311	case EIO_WD_CLOSE: req->result = 0;
		2312	eio_wd_close_sync (req->wd); break;
		2313
		2314	case EIO_SEEK: eio__lseek (req); break;
1987	case EIO_READ: ALLOC (req->size);	2315	case EIO_READ: ALLOC (req->size);
1988	req->result = req->offs >= 0	2316	req->result = req->offs >= 0
1989	? pread (req->int1, req->ptr2, req->size, req->offs)	2317	? pread (req->int1, req->ptr2, req->size, req->offs)
1990	: read (req->int1, req->ptr2, req->size); break;	2318	: read (req->int1, req->ptr2, req->size); break;
1991	case EIO_WRITE: req->result = req->offs >= 0	2319	case EIO_WRITE: req->result = req->offs >= 0
1992	? pwrite (req->int1, req->ptr2, req->size, req->offs)	2320	? pwrite (req->int1, req->ptr2, req->size, req->offs)
1993	: write (req->int1, req->ptr2, req->size); break;	2321	: write (req->int1, req->ptr2, req->size); break;
1994		2322
1995	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	2323	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1996	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;	2324	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
		2325
		2326	#if HAVE_AT
1997		2327
1998	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2328	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1999	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2329	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
2000	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2330	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2331	req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
		2332	case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
		2333	case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
		2334	case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
		2335	case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
		2336
		2337	case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
		2338	case EIO_RMDIR: req->result = unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
		2339	case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
		2340	case EIO_RENAME: req->result = renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break;
		2341	case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
		2342	case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
		2343	case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
		2344	case EIO_READLINK: ALLOC (PATH_MAX);
		2345	req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break;
		2346	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2347	req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2348	case EIO_UTIME:
		2349	case EIO_FUTIME:
		2350	{
		2351	struct timespec ts[2];
		2352	struct timespec *times;
		2353
		2354	if (req->nv1 != -1. || req->nv2 != -1.)
		2355	{
		2356	ts[0].tv_sec = req->nv1;
		2357	ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
		2358	ts[1].tv_sec = req->nv2;
		2359	ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
		2360
		2361	times = ts;
		2362	}
		2363	else
		2364	times = 0;
		2365
		2366	req->result = req->type == EIO_FUTIME
		2367	? futimens (req->int1, times)
		2368	: utimensat (dirfd, req->ptr1, times, 0);
		2369	}
		2370	break;
		2371
		2372	#else
		2373
		2374	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		2375	req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2376	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2001	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	2377	req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
		2378	case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
		2379	case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
		2380	case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
		2381	case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
		2382
		2383	case EIO_UNLINK: req->result = unlink (path ); break;
		2384	case EIO_RMDIR: req->result = rmdir (path ); break;
		2385	case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
		2386	case EIO_RENAME: req->result = rename (path , req->ptr2); break;
		2387	case EIO_LINK: req->result = link (path , req->ptr2); break;
		2388	case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
		2389	case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
		2390	case EIO_READLINK: ALLOC (PATH_MAX);
		2391	req->result = readlink (path, req->ptr2, PATH_MAX); break;
		2392	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		2393	req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
		2394
		2395	case EIO_UTIME:
		2396	case EIO_FUTIME:
		2397	{
		2398	struct timeval tv[2];
		2399	struct timeval *times;
		2400
		2401	if (req->nv1 != -1. || req->nv2 != -1.)
		2402	{
		2403	tv[0].tv_sec = req->nv1;
		2404	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
		2405	tv[1].tv_sec = req->nv2;
		2406	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
		2407
		2408	times = tv;
		2409	}
		2410	else
		2411	times = 0;
		2412
		2413	req->result = req->type == EIO_FUTIME
		2414	? futimes (req->int1, times)
		2415	: utimes (req->ptr1, times);
		2416	}
		2417	break;
		2418
		2419	#endif
		2420
		2421	case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
		2422	{
		2423	ALLOC (req->result);
		2424	memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
		2425	}
		2426	break;
		2427
2002	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	2428	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2003	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	2429	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2004		2430
2005	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2006	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2007	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));	2431	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2008	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;	2432	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2009		2433
2010	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
2011	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	2434	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2012	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
2013	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	2435	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2014	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
2015	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;	2436	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2016		2437
2017	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
2018	case EIO_CLOSE: req->result = close (req->int1); break;	2438	case EIO_CLOSE: req->result = close (req->int1); break;
2019	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;	2439	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2020	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
2021	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
2022	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
2023	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
2024	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
2025	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
2026	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
2027
2028	case EIO_REALPATH: eio__realpath (req, self); break;
2029
2030	case EIO_READLINK: ALLOC (PATH_MAX);
2031	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
2032
2033	case EIO_SYNC: req->result = 0; sync (); break;	2440	case EIO_SYNC: req->result = 0; sync (); break;
2034	case EIO_FSYNC: req->result = fsync (req->int1); break;	2441	case EIO_FSYNC: req->result = fsync (req->int1); break;
2035	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	2442	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		2443	case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
		2444	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2036	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;	2445	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2037	case EIO_MTOUCH: req->result = eio__mtouch (req); break;	2446	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2038	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;	2447	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2039	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;	2448	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2040	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2041	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;	2449	case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2042		2450
2043	case EIO_READDIR: eio__scandir (req, self); break;	2451	case EIO_READDIR: eio__scandir (req, self); break;
2044		2452
2045	case EIO_BUSY:	2453	case EIO_BUSY:
…		…
2055	req->result = select (0, 0, 0, 0, &tv);	2463	req->result = select (0, 0, 0, 0, &tv);
2056	}	2464	}
2057	#endif	2465	#endif
2058	break;	2466	break;
2059		2467
2060	case EIO_UTIME:
2061	case EIO_FUTIME:
2062	{
2063	struct timeval tv[2];
2064	struct timeval *times;
2065
2066	if (req->nv1 != -1. || req->nv2 != -1.)
2067	{
2068	tv[0].tv_sec = req->nv1;
2069	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
2070	tv[1].tv_sec = req->nv2;
2071	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
2072
2073	times = tv;
2074	}
2075	else
2076	times = 0;
2077
2078	req->result = req->type == EIO_FUTIME
2079	? futimes (req->int1, times)
2080	: utimes (req->ptr1, times);
2081	}
2082	break;
2083
2084	case EIO_GROUP:	2468	case EIO_GROUP:
2085	abort (); /* handled in eio_request */	2469	abort (); /* handled in eio_request */
2086		2470
2087	case EIO_NOP:	2471	case EIO_NOP:
2088	req->result = 0;	2472	req->result = 0;
…		…
2091	case EIO_CUSTOM:	2475	case EIO_CUSTOM:
2092	req->feed (req);	2476	req->feed (req);
2093	break;	2477	break;
2094		2478
2095	default:	2479	default:
2096	errno = ENOSYS;
2097	req->result = -1;	2480	req->result = EIO_ENOSYS ();
2098	break;	2481	break;
2099	}	2482	}
2100		2483
2101	req->errorno = errno;	2484	req->errorno = errno;
2102	}	2485	}
2103		2486
2104	#ifndef EIO_NO_WRAPPERS	2487	#ifndef EIO_NO_WRAPPERS
2105		2488
		2489	eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
		2490	{
		2491	REQ (EIO_WD_OPEN); PATH; SEND;
		2492	}
		2493
		2494	eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
		2495	{
		2496	REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
		2497	}
		2498
2106	eio_req *eio_nop (int pri, eio_cb cb, void *data)	2499	eio_req *eio_nop (int pri, eio_cb cb, void *data)
2107	{	2500	{
2108	REQ (EIO_NOP); SEND;	2501	REQ (EIO_NOP); SEND;
2109	}	2502	}
2110		2503
…		…
2126	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2519	eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2127	{	2520	{
2128	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2521	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2129	}	2522	}
2130		2523
		2524	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
		2525	{
		2526	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		2527	}
		2528
		2529	eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
		2530	{
		2531	REQ (EIO_SYNCFS); req->int1 = fd; SEND;
		2532	}
		2533
		2534	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
		2535	{
		2536	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		2537	}
		2538
2131	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)	2539	eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2132	{	2540	{
2133	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	2541	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2134	}	2542	}
2135		2543
…		…
2141	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)	2549	eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2142	{	2550	{
2143	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;	2551	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2144	}	2552	}
2145		2553
2146	eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2147	{
2148	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2149	}
2150
2151	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)	2554	eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2152	{	2555	{
2153	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;	2556	REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2154	}	2557	}
2155		2558
2156	eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
2157	{
2158	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
2159	}
2160
2161	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)	2559	eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2162	{	2560	{
2163	REQ (EIO_CLOSE); req->int1 = fd; SEND;	2561	REQ (EIO_CLOSE); req->int1 = fd; SEND;
2164	}	2562	}
2165		2563
2166	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)	2564	eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
2167	{	2565	{
2168	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;	2566	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
		2567	}
		2568
		2569	eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
		2570	{
		2571	REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
2169	}	2572	}
2170		2573
2171	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)	2574	eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2172	{	2575	{
2173	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;	2576	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
…		…
2391	/* misc garbage */	2794	/* misc garbage */
2392		2795
2393	eio_ssize_t	2796	eio_ssize_t
2394	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2797	eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2395	{	2798	{
2396	etp_worker wrk;
2397	eio_ssize_t ret;
2398
2399	wrk.dbuf = 0;
2400
2401	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);	2799	return eio__sendfile (ofd, ifd, offset, count);
2402
2403	if (wrk.dbuf)
2404	free (wrk.dbuf);
2405
2406	return ret;
2407	}	2800	}
2408		2801

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