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Comparing libeio/eio.c (file contents):
Revision 1.8 by root, Sun May 11 20:08:37 2008 UTC vs.
Revision 1.161 by root, Fri Feb 16 21:20:52 2024 UTC

1/*
2 * libeio implementation
3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018,2019 Marc Alexander Lehmann <libeio@schmorp.de>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
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
37 * either the BSD or the GPL.
38 */
39
40#ifndef _WIN32
41# include "config.h"
42#endif
43
1#include "eio.h" 44#include "eio.h"
2#include "xthread.h" 45#include "ecb.h"
3 46
4#include <errno.h> 47#include <errno.h>
5#include <stddef.h> 48#include <stddef.h>
6#include <stdlib.h> 49#include <stdlib.h>
7#include <string.h> 50#include <string.h>
… …
10#include <sys/stat.h> 53#include <sys/stat.h>
11#include <limits.h> 54#include <limits.h>
12#include <fcntl.h> 55#include <fcntl.h>
13#include <assert.h> 56#include <assert.h>
14 57
58/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
59/* intptr_t only comes from stdint.h, says idiot openbsd coder */
60#if HAVE_STDINT_H
61# include <stdint.h>
62#endif
63
64#ifndef ECANCELED
65# define ECANCELED EDOM
66#endif
67#ifndef ELOOP
68# define ELOOP EDOM
69#endif
70
71#if !defined(ENOTSOCK) && defined(WSAENOTSOCK)
72# define ENOTSOCK WSAENOTSOCK
73#endif
74
75static void eio_destroy (eio_req *req);
76
15#ifndef EIO_FINISH 77#ifndef EIO_FINISH
16# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 78# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
17#endif 79#endif
18 80
19#ifndef EIO_DESTROY 81#ifndef EIO_DESTROY
… …
22 84
23#ifndef EIO_FEED 85#ifndef EIO_FEED
24# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) 86# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
25#endif 87#endif
26 88
89#ifndef EIO_FD_TO_WIN32_HANDLE
90# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
91#endif
92#ifndef EIO_WIN32_HANDLE_TO_FD
93# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
94#endif
95
96#define EIO_ERRNO(errval,retval) ((errno = errval), retval)
97
98#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1)
99
27#ifdef _WIN32 100#ifdef _WIN32
28 101
29 /*doh*/ 102 #undef PAGESIZE
103 #define PAGESIZE 4096 /* GetSystemInfo? */
104
105 /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */
106
107 #ifdef EIO_STRUCT_STATI64
108 /* look at perl's non-sloppy stat */
109 #define stat(path,buf) _stati64 (path,buf)
110 #define fstat(fd,buf) _fstati64 (fd,buf)
111 #endif
112 #define lstat(path,buf) stat (path,buf)
113 #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1))
114 #define mkdir(path,mode) _mkdir (path)
115 #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1))
116
117 #define chmod(path,mode) _chmod (path, mode)
118 #define dup(fd) _dup (fd)
119 #define dup2(fd1,fd2) _dup2 (fd1, fd2)
120 #define pipe(fds) _pipe (fds, 4096, O_BINARY)
121
122 #define fcntl(fd,cmd,arg) EIO_ENOSYS ()
123 #define ioctl(fd,cmd,arg) EIO_ENOSYS ()
124 #define fchmod(fd,mode) EIO_ENOSYS ()
125 #define chown(path,uid,gid) EIO_ENOSYS ()
126 #define fchown(fd,uid,gid) EIO_ENOSYS ()
127 #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */
128 #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */
129 #define mknod(path,mode,dev) EIO_ENOSYS ()
130 #define sync() EIO_ENOSYS ()
131 #define readlink(path,buf,s) EIO_ENOSYS ()
132 #define statvfs(path,buf) EIO_ENOSYS ()
133 #define fstatvfs(fd,buf) EIO_ENOSYS ()
134
135 #define pread(fd,buf,count,offset) eio__pread (fd, buf, count, offset)
136 #define pwrite(fd,buf,count,offset) eio__pwrite (fd, buf, count, offset)
137
138 #if __GNUC__
139 typedef long long eio_off_t; /* signed for compatibility to msvc */
140 #else
141 typedef __int64 eio_off_t; /* unsigned not supported by msvc */
142 #endif
143
144 static eio_ssize_t
145 eio__pread (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
146 {
147 OVERLAPPED o = { 0 };
148 DWORD got;
149
150 o.Offset = offset;
151 o.OffsetHigh = offset >> 32;
152
153 return ReadFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
154 ? got : -1;
155 }
156
157 static eio_ssize_t
158 eio__pwrite (int fd, void *buf, eio_ssize_t count, eio_off_t offset)
159 {
160 OVERLAPPED o = { 0 };
161 DWORD got;
162
163 o.Offset = offset;
164 o.OffsetHigh = offset >> 32;
165
166 return WriteFile ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd), buf, count, &got, &o)
167 ? got : -1;
168 }
169
170 /* rename() uses MoveFile, which fails to overwrite */
171 #define rename(old,neu) eio__rename (old, neu)
172
173 static int
174 eio__rename (const char *old, const char *neu)
175 {
176 if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING))
177 return 0;
178
179 /* should steal _dosmaperr */
180 switch (GetLastError ())
181 {
182 case ERROR_FILE_NOT_FOUND:
183 case ERROR_PATH_NOT_FOUND:
184 case ERROR_INVALID_DRIVE:
185 case ERROR_NO_MORE_FILES:
186 case ERROR_BAD_NETPATH:
187 case ERROR_BAD_NET_NAME:
188 case ERROR_BAD_PATHNAME:
189 case ERROR_FILENAME_EXCED_RANGE:
190 errno = ENOENT;
191 break;
192
193 default:
194 errno = EACCES;
195 break;
196 }
197
198 return -1;
199 }
200
201 /* we could even stat and see if it exists */
202 static int
203 symlink (const char *old, const char *neu)
204 {
205 #if WINVER >= 0x0600
206 int flags;
207
208 /* This tries out all combinations of SYMBOLIC_LINK_FLAG_DIRECTORY
209 * and SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE,
210 * with directory first.
211 */
212 for (flags = 3; flags >= 0; --flags)
213 if (CreateSymbolicLink (neu, old, flags))
214 return 0;
215 #endif
216
217 return EIO_ERRNO (ENOENT, -1);
218 }
219
220 /* POSIX API only, causing trouble for win32 apps */
221 #define CreateHardLink(neu,old,flags) 0 /* not really creating hardlink, still using relative paths? */
222 #define CreateSymbolicLink(neu,old,flags) 0 /* vista+ only */
223
224 struct statvfs
225 {
226 int dummy;
227 };
228
229 #define DT_DIR EIO_DT_DIR
230 #define DT_REG EIO_DT_REG
231 #define D_NAME(entp) entp.cFileName
232 #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG)
30 233
31#else 234#else
32 235
33# include "config.h" 236 #include <sys/ioctl.h>
34# include <sys/time.h> 237 #include <sys/time.h>
35# include <sys/select.h> 238 #include <sys/select.h>
36# include <unistd.h> 239 #include <unistd.h>
240 #include <signal.h>
241 #include <dirent.h>
242
243 #ifdef ANDROID
244 #include <sys/vfs.h>
245 #define statvfs statfs
246 #define fstatvfs fstatfs
247 #include <asm/page.h> /* supposedly limits.h does #define PAGESIZE PAGESIZE */
248 #else
249 #include <sys/statvfs.h>
250 #endif
251
252 #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
253 #include <sys/mman.h>
254 #endif
255
256 #define D_NAME(entp) entp->d_name
257
258 /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
259 #if __FreeBSD__ || __NetBSD__ || __OpenBSD__
260 #define _DIRENT_HAVE_D_TYPE /* sigh */
261 #define D_INO(de) (de)->d_fileno
262 #define D_NAMLEN(de) (de)->d_namlen
263 #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
264 #define D_INO(de) (de)->d_ino
265 #endif
266
267 #ifdef _D_EXACT_NAMLEN
268 #undef D_NAMLEN
269 #define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
270 #endif
271
272 #ifdef _DIRENT_HAVE_D_TYPE
273 #define D_TYPE(de) (de)->d_type
274 #endif
275
276 #ifndef EIO_STRUCT_DIRENT
277 #define EIO_STRUCT_DIRENT struct dirent
278 #endif
279
280#endif
281
282#if HAVE_UTIMES
37# include <utime.h> 283# include <utime.h>
38# include <signal.h>
39# include <dirent.h>
40
41# ifndef EIO_STRUCT_DIRENT
42# define EIO_STRUCT_DIRENT struct dirent
43# endif 284#endif
44 285
45#endif 286#if HAVE_SYS_SYSCALL_H
46 287# include <sys/syscall.h>
47# ifndef EIO_STRUCT_STAT
48# define EIO_STRUCT_STAT struct stat
49# endif 288#endif
50 289
51#if HAVE_SENDFILE 290#if HAVE_SENDFILE
52# if __linux 291# if __linux
53# include <sys/sendfile.h> 292# include <sys/sendfile.h>
54# elif __freebsd 293# elif __FreeBSD__ || defined __APPLE__
55# include <sys/socket.h> 294# include <sys/socket.h>
56# include <sys/uio.h> 295# include <sys/uio.h>
57# elif __hpux 296# elif __hpux
58# include <sys/socket.h> 297# include <sys/socket.h>
59# elif __solaris /* not yet */ 298# elif __solaris
60# include <sys/sendfile.h> 299# include <sys/sendfile.h>
61# else 300# else
62# error sendfile support requested but not available 301# error sendfile support requested but not available
63# endif 302# endif
64#endif 303#endif
65 304
66/* number of seconds after which an idle threads exit */ 305#if HAVE_RENAMEAT2
67#define IDLE_TIMEOUT 10 306# include <sys/syscall.h>
307# include <linux/fs.h>
308#endif
309
310#ifndef D_TYPE
311# define D_TYPE(de) 0
312#endif
313#ifndef D_INO
314# define D_INO(de) 0
315#endif
316#ifndef D_NAMLEN
317# define D_NAMLEN(entp) strlen (D_NAME (entp))
318#endif
68 319
69/* used for struct dirent, AIX doesn't provide it */ 320/* used for struct dirent, AIX doesn't provide it */
70#ifndef NAME_MAX 321#ifndef NAME_MAX
71# define NAME_MAX 4096 322# define NAME_MAX 4096
72#endif 323#endif
73 324
325/* used for readlink etc. */
326#ifndef PATH_MAX
327# define PATH_MAX 0
328#endif
329
330#ifndef O_CLOEXEC
331 #define O_CLOEXEC 0
332#endif
333
334#ifndef O_NONBLOCK
335 #define O_NONBLOCK 0
336#endif
337
338#ifndef O_SEARCH
339 #define O_SEARCH O_RDONLY
340#endif
341
342#ifndef O_DIRECTORY
343 #define O_DIRECTORY 0
344#endif
345
346#ifndef EIO_PATH_MIN
347# define EIO_PATH_MIN 8160
348#endif
349
350#if defined(O_PATH)
351# define EIO_O_PATH O_PATH
352#elif defined(O_SEARCH)
353# define EIO_O_PATH O_SEARCH
354#else
355# define EIO_O_PATH 0
356#endif
357
358#define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX)
359
74/* buffer size for various temporary buffers */ 360/* buffer size for various temporary buffers */
75#define EIO_BUFSIZE 65536 361#define EIO_BUFSIZE 65536
76 362
77#define dBUF \ 363#define dBUF \
78 char *eio_buf; \
79 X_LOCK (wrklock); \
80 self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ 364 char *eio_buf = malloc (EIO_BUFSIZE); \
81 X_UNLOCK (wrklock); \ 365 errno = ENOMEM; \
82 if (!eio_buf) \ 366 if (!eio_buf) \
83 return -1; 367 return -1
84 368
85#define EIO_TICKS ((1000000 + 1023) >> 10) 369#define FUBd \
370 free (eio_buf)
86 371
87static void (*want_poll_cb) (void); 372/*****************************************************************************/
88static void (*done_poll_cb) (void);
89 373
90static unsigned int max_poll_time = 0; 374struct etp_tmpbuf;
91static unsigned int max_poll_reqs = 0;
92 375
93/* calculcate time difference in ~1/EIO_TICKS of a second */ 376#if _POSIX_VERSION >= 200809L
94static int tvdiff (struct timeval *tv1, struct timeval *tv2) 377 #define HAVE_AT 1
95{ 378 #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD)
96 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS 379#else
97 + ((tv2->tv_usec - tv1->tv_usec) >> 10); 380 #define HAVE_AT 0
98} 381 static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path);
382#endif
99 383
100static unsigned int started, idle, wanted; 384struct eio_pwd
101
102/* worker threads management */
103static mutex_t wrklock = X_MUTEX_INIT;
104
105typedef struct worker {
106 /* locked by wrklock */
107 struct worker *prev, *next;
108
109 thread_t tid;
110
111 /* locked by reslock, reqlock or wrklock */
112 eio_req *req; /* currently processed request */
113 void *dbuf;
114 DIR *dirp;
115} worker;
116
117static worker wrk_first = { &wrk_first, &wrk_first, 0 };
118
119static void worker_clear (worker *wrk)
120{ 385{
121 if (wrk->dirp) 386#if HAVE_AT
122 { 387 int fd;
123 closedir (wrk->dirp); 388#endif
124 wrk->dirp = 0;
125 }
126
127 if (wrk->dbuf)
128 {
129 free (wrk->dbuf);
130 wrk->dbuf = 0;
131 }
132}
133
134static void worker_free (worker *wrk)
135{
136 wrk->next->prev = wrk->prev;
137 wrk->prev->next = wrk->next;
138
139 free (wrk);
140}
141
142static volatile unsigned int nreqs, nready, npending;
143static volatile unsigned int max_idle = 4;
144
145static mutex_t reslock = X_MUTEX_INIT;
146static mutex_t reqlock = X_MUTEX_INIT;
147static cond_t reqwait = X_COND_INIT;
148
149unsigned int eio_nreqs (void)
150{
151 return nreqs;
152}
153
154unsigned int eio_nready (void)
155{
156 unsigned int retval;
157
158 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
159 retval = nready;
160 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
161
162 return retval;
163}
164
165unsigned int eio_npending (void)
166{
167 unsigned int retval;
168
169 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
170 retval = npending;
171 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
172
173 return retval;
174}
175
176unsigned int eio_nthreads (void)
177{
178 unsigned int retval;
179
180 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
181 retval = started;
182 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
183
184 return retval;
185}
186
187/*
188 * a somewhat faster data structure might be nice, but
189 * with 8 priorities this actually needs <20 insns
190 * per shift, the most expensive operation.
191 */
192typedef struct {
193 eio_req *qs[EIO_NUM_PRI], *qe[EIO_NUM_PRI]; /* qstart, qend */
194 int size; 389 int len;
195} reqq; 390 char str[1]; /* actually, a 0-terminated canonical path */
391};
196 392
197static reqq req_queue; 393/*****************************************************************************/
198static reqq res_queue;
199 394
200static int reqq_push (reqq *q, eio_req *req) 395#define ETP_PRI_MIN EIO_PRI_MIN
201{ 396#define ETP_PRI_MAX EIO_PRI_MAX
202 int pri = req->pri;
203 req->next = 0;
204 397
205 if (q->qe[pri]) 398#define ETP_TYPE_QUIT -1
206 { 399#define ETP_TYPE_GROUP EIO_GROUP
207 q->qe[pri]->next = req;
208 q->qe[pri] = req;
209 }
210 else
211 q->qe[pri] = q->qs[pri] = req;
212 400
213 return q->size++; 401static void eio_nop_callback (void) { }
214} 402static void (*eio_want_poll_cb)(void) = eio_nop_callback;
403static void (*eio_done_poll_cb)(void) = eio_nop_callback;
215 404
216static eio_req *reqq_shift (reqq *q) 405#define ETP_WANT_POLL(pool) eio_want_poll_cb ()
217{ 406#define ETP_DONE_POLL(pool) eio_done_poll_cb ()
218 int pri;
219 407
220 if (!q->size) 408struct etp_worker;
221 return 0; 409#define ETP_REQ eio_req
410#define ETP_DESTROY(req) eio_destroy (req)
411static int eio_finish (eio_req *req);
412#define ETP_FINISH(req) eio_finish (req)
413static void eio_execute (struct etp_worker *self, eio_req *req);
414#define ETP_EXECUTE(wrk,req) eio_execute (wrk, req)
222 415
223 --q->size; 416#include "etp.c"
224 417
225 for (pri = EIO_NUM_PRI; pri--; ) 418static struct etp_pool eio_pool;
226 { 419#define EIO_POOL (&eio_pool)
227 eio_req *req = q->qs[pri];
228 420
229 if (req) 421/*****************************************************************************/
230 {
231 if (!(q->qs[pri] = (eio_req *)req->next))
232 q->qe[pri] = 0;
233 422
234 return req; 423static void
235 }
236 }
237
238 abort ();
239}
240
241static void grp_try_feed (eio_req *grp) 424grp_try_feed (eio_req *grp)
242{ 425{
243 while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) 426 while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
244 { 427 {
245 int old_len = grp->size; 428 grp->flags &= ~ETP_FLAG_GROUPADD;
246 429
247 EIO_FEED (grp); 430 EIO_FEED (grp);
248 431
249 /* stop if no progress has been made */ 432 /* stop if no progress has been made */
250 if (old_len == grp->size) 433 if (!(grp->flags & ETP_FLAG_GROUPADD))
251 { 434 {
252 grp->feed = 0; 435 grp->feed = 0;
253 break; 436 break;
254 } 437 }
255 } 438 }
256} 439}
257 440
258static int eio_finish (eio_req *req); 441static int
259
260static int grp_dec (eio_req *grp) 442grp_dec (eio_req *grp)
261{ 443{
262 --grp->size; 444 --grp->size;
263 445
264 /* call feeder, if applicable */ 446 /* call feeder, if applicable */
265 grp_try_feed (grp); 447 grp_try_feed (grp);
266 448
267 /* finish, if done */ 449 /* finish, if done */
268 if (!grp->size && grp->int1) 450 if (!grp->size && grp->flags & ETP_FLAG_DELAYED)
269 return eio_finish (grp); 451 return eio_finish (grp);
270 else 452 else
271 return 0; 453 return 0;
272} 454}
273 455
456static void
274void eio_destroy (eio_req *req) 457eio_destroy (eio_req *req)
275{ 458{
276 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); 459 if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
277 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); 460 if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
278 461
279 EIO_DESTROY (req); 462 EIO_DESTROY (req);
280} 463}
281 464
465static int
282static int eio_finish (eio_req *req) 466eio_finish (eio_req *req)
283{ 467{
284 int res = EIO_FINISH (req); 468 int res = EIO_FINISH (req);
285 469
286 if (req->grp) 470 if (req->grp)
287 { 471 {
… …
295 if (grp->grp_first == req) 479 if (grp->grp_first == req)
296 grp->grp_first = req->grp_next; 480 grp->grp_first = req->grp_next;
297 481
298 res2 = grp_dec (grp); 482 res2 = grp_dec (grp);
299 483
300 if (!res && res2) 484 if (!res)
301 res = res2; 485 res = res2;
302 } 486 }
303 487
304 eio_destroy (req); 488 eio_destroy (req);
305 489
306 return res; 490 return res;
307} 491}
308 492
493void
309void eio_grp_cancel (eio_req *grp) 494eio_grp_cancel (eio_req *grp)
310{ 495{
311 for (grp = grp->grp_first; grp; grp = grp->grp_next) 496 etp_grp_cancel (EIO_POOL, grp);
312 eio_cancel (grp);
313} 497}
314 498
499void
315void eio_cancel (eio_req *req) 500eio_cancel (eio_req *req)
316{ 501{
317 X_LOCK (wrklock); 502 etp_cancel (EIO_POOL, req);
318 req->flags |= EIO_FLAG_CANCELLED;
319 X_UNLOCK (wrklock);
320
321 eio_grp_cancel (req);
322} 503}
323 504
324X_THREAD_PROC (eio_proc); 505void
325
326static void start_thread (void)
327{
328 worker *wrk = calloc (1, sizeof (worker));
329
330 /*TODO*/
331 assert (("unable to allocate worker thread data", !wrk));
332
333 X_LOCK (wrklock);
334
335 if (thread_create (&wrk->tid, eio_proc, (void *)wrk))
336 {
337 wrk->prev = &wrk_first;
338 wrk->next = wrk_first.next;
339 wrk_first.next->prev = wrk;
340 wrk_first.next = wrk;
341 ++started;
342 }
343 else
344 free (wrk);
345
346 X_UNLOCK (wrklock);
347}
348
349static void maybe_start_thread (void)
350{
351 if (eio_nthreads () >= wanted)
352 return;
353
354 /* todo: maybe use idle here, but might be less exact */
355 if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ())
356 return;
357
358 start_thread ();
359}
360
361void eio_submit (eio_req *req) 506eio_submit (eio_req *req)
362{ 507{
363 ++nreqs; 508 etp_submit (EIO_POOL, req);
364
365 X_LOCK (reqlock);
366 ++nready;
367 reqq_push (&req_queue, req);
368 X_COND_SIGNAL (reqwait);
369 X_UNLOCK (reqlock);
370
371 maybe_start_thread ();
372} 509}
373 510
374static void end_thread (void) 511unsigned int
512eio_nreqs (void)
375{ 513{
376 eio_req *req = calloc (1, sizeof (eio_req)); 514 return etp_nreqs (EIO_POOL);
377
378 req->type = EIO_QUIT;
379 req->pri = EIO_PRI_MAX + EIO_PRI_BIAS;
380
381 X_LOCK (reqlock);
382 reqq_push (&req_queue, req);
383 X_COND_SIGNAL (reqwait);
384 X_UNLOCK (reqlock);
385
386 X_LOCK (wrklock);
387 --started;
388 X_UNLOCK (wrklock);
389} 515}
390 516
517unsigned int
518eio_nready (void)
519{
520 return etp_nready (EIO_POOL);
521}
522
523unsigned int
524eio_npending (void)
525{
526 return etp_npending (EIO_POOL);
527}
528
529unsigned int ecb_cold
530eio_nthreads (void)
531{
532 return etp_nthreads (EIO_POOL);
533}
534
535void ecb_cold
391void eio_set_max_poll_time (double nseconds) 536eio_set_max_poll_time (double nseconds)
392{ 537{
393 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 538 etp_set_max_poll_time (EIO_POOL, nseconds);
394 max_poll_time = nseconds;
395 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
396} 539}
397 540
541void ecb_cold
398void eio_set_max_poll_reqs (unsigned int maxreqs) 542eio_set_max_poll_reqs (unsigned int maxreqs)
399{ 543{
400 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 544 etp_set_max_poll_reqs (EIO_POOL, maxreqs);
401 max_poll_reqs = maxreqs;
402 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
403} 545}
404 546
547void ecb_cold
405void eio_set_max_idle (unsigned int nthreads) 548eio_set_max_idle (unsigned int nthreads)
406{ 549{
407 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 550 etp_set_max_idle (EIO_POOL, nthreads);
408 max_idle = nthreads <= 0 ? 1 : nthreads;
409 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
410} 551}
411 552
553void ecb_cold
554eio_set_idle_timeout (unsigned int seconds)
555{
556 etp_set_idle_timeout (EIO_POOL, seconds);
557}
558
559void ecb_cold
412void eio_set_min_parallel (unsigned int nthreads) 560eio_set_min_parallel (unsigned int nthreads)
413{ 561{
414 if (wanted < nthreads) 562 etp_set_min_parallel (EIO_POOL, nthreads);
415 wanted = nthreads;
416} 563}
417 564
565void ecb_cold
418void eio_set_max_parallel (unsigned int nthreads) 566eio_set_max_parallel (unsigned int nthreads)
419{ 567{
420 if (wanted > nthreads) 568 etp_set_max_parallel (EIO_POOL, nthreads);
421 wanted = nthreads;
422
423 while (started > wanted)
424 end_thread ();
425} 569}
426 570
427int eio_poll (void) 571int eio_poll (void)
428{ 572{
429 int maxreqs = max_poll_reqs; 573 return etp_poll (EIO_POOL);
430 struct timeval tv_start, tv_now;
431 eio_req *req;
432
433 if (max_poll_time)
434 gettimeofday (&tv_start, 0);
435
436 for (;;)
437 {
438 maybe_start_thread ();
439
440 X_LOCK (reslock);
441 req = reqq_shift (&res_queue);
442
443 if (req)
444 {
445 --npending;
446
447 if (!res_queue.size && done_poll_cb)
448 done_poll_cb ();
449 }
450
451 X_UNLOCK (reslock);
452
453 if (!req)
454 return 0;
455
456 --nreqs;
457
458 if (req->type == EIO_GROUP && req->size)
459 {
460 req->int1 = 1; /* mark request as delayed */
461 continue;
462 }
463 else
464 {
465 int res = eio_finish (req);
466 if (res)
467 return res;
468 }
469
470 if (maxreqs && !--maxreqs)
471 break;
472
473 if (max_poll_time)
474 {
475 gettimeofday (&tv_now, 0);
476
477 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
478 break;
479 }
480 }
481
482 errno = EAGAIN;
483 return -1;
484} 574}
485 575
486/*****************************************************************************/ 576/*****************************************************************************/
487/* work around various missing functions */ 577/* work around various missing functions */
488 578
489#if !HAVE_PREADWRITE 579#if HAVE_POSIX_CLOSE && !__linux
490# define pread aio_pread 580# define eio__close(fd) posix_close (fd, 0)
491# define pwrite aio_pwrite 581#else
492 582# define eio__close(fd) close (fd)
493/*
494 * make our pread/pwrite safe against themselves, but not against
495 * normal read/write by using a mutex. slows down execution a lot,
496 * but that's your problem, not mine.
497 */
498static mutex_t preadwritelock = X_MUTEX_INIT;
499
500static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
501{
502 ssize_t res;
503 off_t ooffset;
504
505 X_LOCK (preadwritelock);
506 ooffset = lseek (fd, 0, SEEK_CUR);
507 lseek (fd, offset, SEEK_SET);
508 res = read (fd, buf, count);
509 lseek (fd, ooffset, SEEK_SET);
510 X_UNLOCK (preadwritelock);
511
512 return res;
513}
514
515static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
516{
517 ssize_t res;
518 off_t ooffset;
519
520 X_LOCK (preadwritelock);
521 ooffset = lseek (fd, 0, SEEK_CUR);
522 lseek (fd, offset, SEEK_SET);
523 res = write (fd, buf, count);
524 lseek (fd, offset, SEEK_SET);
525 X_UNLOCK (preadwritelock);
526
527 return res;
528}
529#endif 583#endif
530 584
585/* close() without disturbing errno */
586static void
587silent_close (int fd)
588{
589 int saved_errno = errno;
590 eio__close (fd);
591 errno = saved_errno;
592}
593
531#ifndef HAVE_FUTIMES 594#ifndef HAVE_UTIMES
532 595
596# undef utimes
533# define utimes(path,times) aio_utimes (path, times) 597# define utimes(path,times) eio__utimes (path, times)
534# define futimes(fd,times) aio_futimes (fd, times)
535 598
599static int
536static int aio_utimes (const char *filename, const struct timeval times[2]) 600eio__utimes (const char *filename, const struct timeval times[2])
537{ 601{
538 if (times) 602 if (times)
539 { 603 {
540 struct utimbuf buf; 604 struct utimbuf buf;
541 605
… …
546 } 610 }
547 else 611 else
548 return utime (filename, 0); 612 return utime (filename, 0);
549} 613}
550 614
615#endif
616
617#ifndef HAVE_FUTIMES
618
619# undef futimes
620# define futimes(fd,times) eio__futimes (fd, times)
621
622static int
551static int aio_futimes (int fd, const struct timeval tv[2]) 623eio__futimes (int fd, const struct timeval tv[2])
552{ 624{
553 errno = ENOSYS; 625 errno = ENOSYS;
554 return -1; 626 return -1;
555} 627}
556 628
557#endif 629#endif
558 630
559#if !HAVE_FDATASYNC 631#if !HAVE_FDATASYNC
632# undef fdatasync
560# define fdatasync fsync 633# define fdatasync(fd) fsync (fd)
561#endif 634#endif
635
636static int
637eio__syncfs (int fd)
638{
639 int res;
640
641#if HAVE_SYS_SYNCFS
642 res = (int)syscall (__NR_syncfs, (int)(fd));
643#else
644 res = EIO_ENOSYS ();
645#endif
646
647 if (res < 0 && errno == ENOSYS && fd >= 0)
648 sync ();
649
650 return res;
651}
652
653/* sync_file_range always needs emulation */
654static int
655eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
656{
657#if HAVE_SYNC_FILE_RANGE
658 int res;
659
660 if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
661 || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
662 || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
663 {
664 flags = 0
665 | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
666 | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
667 | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
668 }
669
670 res = sync_file_range (fd, offset, nbytes, flags);
671
672 if (!res || errno != ENOSYS)
673 return res;
674#endif
675
676 /* even though we could play tricks with the flags, it's better to always
677 * call fdatasync, as that matches the expectation of its users best */
678 return fdatasync (fd);
679}
680
681static int
682eio__fallocate (int fd, int mode, off_t offset, size_t len)
683{
684#if HAVE_LINUX_FALLOCATE
685 return fallocate (fd, mode, offset, len);
686#else
687 return EIO_ENOSYS ();
688#endif
689}
562 690
563#if !HAVE_READAHEAD 691#if !HAVE_READAHEAD
692# undef readahead
564# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) 693# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
565 694
695static eio_ssize_t
566static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 696eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
567{ 697{
568 size_t todo = count; 698 size_t todo = count;
569 dBUF; 699 dBUF;
570 700
571 while (todo > 0) 701 while (todo > 0)
… …
575 pread (fd, eio_buf, len, offset); 705 pread (fd, eio_buf, len, offset);
576 offset += len; 706 offset += len;
577 todo -= len; 707 todo -= len;
578 } 708 }
579 709
580 errno = 0; 710 FUBd;
711
712 /* linux's readahead basically only fails for EBADF or EINVAL (not mmappable) */
713 /* but not for e.g. EIO or eof, so we also never fail */
581 return count; 714 return 0;
582} 715}
583 716
584#endif
585
586#if !HAVE_READDIR_R
587# define readdir_r aio_readdir_r
588
589static mutex_t readdirlock = X_MUTEX_INIT;
590
591static int readdir_r (DIR *dirp, EIO_STRUCT_DIRENT *ent, EIO_STRUCT_DIRENT **res)
592{
593 EIO_STRUCT_DIRENT *e;
594 int errorno;
595
596 X_LOCK (readdirlock);
597
598 e = readdir (dirp);
599 errorno = errno;
600
601 if (e)
602 {
603 *res = ent;
604 strcpy (ent->d_name, e->d_name);
605 }
606 else
607 *res = 0;
608
609 X_UNLOCK (readdirlock);
610
611 errno = errorno;
612 return e ? 0 : -1;
613}
614#endif 717#endif
615 718
616/* sendfile always needs emulation */ 719/* sendfile always needs emulation */
720static eio_ssize_t
617static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 721eio__sendfile (int ofd, int ifd, off_t offset, size_t count)
618{ 722{
723 eio_ssize_t written = 0;
619 ssize_t res; 724 eio_ssize_t res;
620 725
621 if (!count) 726 if (!count)
622 return 0; 727 return 0;
623 728
729 for (;;)
730 {
731#ifdef __APPLE__
732# undef HAVE_SENDFILE /* broken, as everything on os x */
733#endif
624#if HAVE_SENDFILE 734#if HAVE_SENDFILE
625# if __linux 735# if __linux
736 off_t soffset = offset;
626 res = sendfile (ofd, ifd, &offset, count); 737 res = sendfile (ofd, ifd, &soffset, count);
627 738
628# elif __freebsd 739# elif __FreeBSD__
629 /* 740 /*
630 * Of course, the freebsd sendfile is a dire hack with no thoughts 741 * Of course, the freebsd sendfile is a dire hack with no thoughts
631 * wasted on making it similar to other I/O functions. 742 * wasted on making it similar to other I/O functions.
632 */ 743 */
633 {
634 off_t sbytes; 744 off_t sbytes;
635 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 745 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
636 746
637 if (res < 0 && sbytes) 747 #if 0 /* according to the manpage, this is correct, but broken behaviour */
638 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 748 /* freebsd' sendfile will return 0 on success */
749 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
750 /* not on e.g. EIO or EPIPE - sounds broken */
751 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
639 res = sbytes; 752 res = sbytes;
640 } 753 #endif
754
755 /* according to source inspection, this is correct, and useful behaviour */
756 if (sbytes)
757 res = sbytes;
758
759# elif defined __APPLE__
760 off_t sbytes = count;
761 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
762
763 /* according to the manpage, sbytes is always valid */
764 if (sbytes)
765 res = sbytes;
641 766
642# elif __hpux 767# elif __hpux
643 res = sendfile (ofd, ifd, offset, count, 0, 0); 768 res = sendfile (ofd, ifd, offset, count, 0, 0);
644 769
645# elif __solaris 770# elif __solaris
646 {
647 struct sendfilevec vec; 771 struct sendfilevec vec;
648 size_t sbytes; 772 size_t sbytes;
649 773
650 vec.sfv_fd = ifd; 774 vec.sfv_fd = ifd;
651 vec.sfv_flag = 0; 775 vec.sfv_flag = 0;
652 vec.sfv_off = offset; 776 vec.sfv_off = offset;
653 vec.sfv_len = count; 777 vec.sfv_len = count;
654 778
655 res = sendfilev (ofd, &vec, 1, &sbytes); 779 res = sendfilev (ofd, &vec, 1, &sbytes);
656 780
657 if (res < 0 && sbytes) 781 if (res < 0 && sbytes)
658 res = sbytes; 782 res = sbytes;
659 }
660 783
661# endif 784# endif
785
786#elif defined (_WIN32) && 0
787 /* does not work, just for documentation of what would need to be done */
788 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
789 /* libeio guarantees that the file offset does not change, and windows */
790 /* has no way to get an independent handle to the same file description */
791 HANDLE h = TO_SOCKET (ifd);
792 SetFilePointer (h, offset, 0, FILE_BEGIN);
793 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
794
662#else 795#else
663 res = -1; 796 res = EIO_ENOSYS ();
664 errno = ENOSYS;
665#endif 797#endif
666 798
799 /* we assume sendfile can copy at least 128mb in one go */
800 if (res <= 128 * 1024 * 1024)
801 {
802 if (res > 0)
803 written += res;
804
805 if (written)
806 return written;
807
808 break;
809 }
810 else
811 {
812 /* if we requested more, then probably the kernel was lazy */
813 written += res;
814 offset += res;
815 count -= res;
816
817 if (!count)
818 return written;
819 }
820 }
821
667 if (res < 0 822 if (res < 0
668 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 823 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
824 /* BSDs */
825#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
826 || errno == ENOTSUP
827#endif
828#ifdef EOPNOTSUPP /* windows */
829 || errno == EOPNOTSUPP /* BSDs */
830#endif
669#if __solaris 831#if __solaris
670 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 832 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
671#endif 833#endif
672 ) 834 )
673 ) 835 )
… …
677 839
678 res = 0; 840 res = 0;
679 841
680 while (count) 842 while (count)
681 { 843 {
682 ssize_t cnt; 844 eio_ssize_t cnt;
683 845
684 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); 846 cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
685 847
686 if (cnt <= 0) 848 if (cnt <= 0)
687 { 849 {
… …
699 861
700 offset += cnt; 862 offset += cnt;
701 res += cnt; 863 res += cnt;
702 count -= cnt; 864 count -= cnt;
703 } 865 }
866
867 FUBd;
704 } 868 }
705 869
706 return res; 870 return res;
707} 871}
708 872
709/* read a full directory */ 873#ifdef PAGESIZE
710static void scandir_ (eio_req *req, worker *self) 874# define eio_pagesize() PAGESIZE
875#else
876static intptr_t
877eio_pagesize (void)
711{ 878{
712 DIR *dirp; 879 static intptr_t page;
713 union
714 {
715 EIO_STRUCT_DIRENT d;
716 char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1];
717 } *u;
718 EIO_STRUCT_DIRENT *entp;
719 char *name, *names;
720 int memlen = 4096;
721 int memofs = 0;
722 int res = 0;
723 880
724 X_LOCK (wrklock); 881 if (!page)
725 self->dirp = dirp = opendir (req->ptr1); 882 page = sysconf (_SC_PAGESIZE);
726 self->dbuf = u = malloc (sizeof (*u));
727 req->flags |= EIO_FLAG_PTR2_FREE;
728 req->ptr2 = names = malloc (memlen);
729 X_UNLOCK (wrklock);
730 883
731 if (dirp && u && names) 884 return page;
732 for (;;) 885}
886#endif
887
888static void
889eio_page_align (void **addr, size_t *length)
890{
891 intptr_t mask = eio_pagesize () - 1;
892
893 /* round down addr */
894 intptr_t adj = mask & (intptr_t)*addr;
895
896 *addr = (void *)((intptr_t)*addr - adj);
897 *length += adj;
898
899 /* round up length */
900 *length = (*length + mask) & ~mask;
901}
902
903#if !_POSIX_MEMLOCK
904# define eio__mlockall(a) EIO_ENOSYS ()
905#else
906
907static int
908eio__mlockall (int flags)
909{
910 #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
911 extern int mallopt (int, int);
912 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
913 #endif
914
915 #ifndef MCL_ONFAULT
916 if (flags & EIO_MCL_ONFAULT)
917 return EIO_ERRNO (EINVAL, -1);
918 #define MCL_ONFAULT 4
919 #endif
920
921 if (EIO_MCL_CURRENT != MCL_CURRENT
922 || EIO_MCL_FUTURE != MCL_FUTURE
923 || EIO_MCL_ONFAULT != MCL_ONFAULT)
924 {
925 flags = 0
926 | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
927 | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0)
928 | (flags & EIO_MCL_ONFAULT ? MCL_ONFAULT : 0)
929 ;
930 }
931
932 return mlockall (flags);
933}
934#endif
935
936#if !_POSIX_MEMLOCK_RANGE
937# define eio__mlock(a,b) EIO_ENOSYS ()
938#else
939
940static int
941eio__mlock (void *addr, size_t length)
942{
943 eio_page_align (&addr, &length);
944
945 return mlock (addr, length);
946}
947
948#endif
949
950#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
951# define eio__msync(a,b,c) EIO_ENOSYS ()
952#else
953
954static int
955eio__msync (void *mem, size_t len, int flags)
956{
957 eio_page_align (&mem, &len);
958
959 if (EIO_MS_ASYNC != MS_SYNC
960 || EIO_MS_INVALIDATE != MS_INVALIDATE
961 || EIO_MS_SYNC != MS_SYNC)
962 {
963 flags = 0
964 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
965 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
966 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
967 }
968
969 return msync (mem, len, flags);
970}
971
972#endif
973
974static int
975eio__mtouch (eio_req *req)
976{
977 void *mem = req->ptr2;
978 size_t len = req->size;
979 int flags = req->int1;
980
981 eio_page_align (&mem, &len);
982
983 {
984 intptr_t addr = (intptr_t)mem;
985 intptr_t end = addr + len;
986 intptr_t page = eio_pagesize ();
987
988 if (addr < end)
989 if (flags & EIO_MT_MODIFY) /* modify */
990 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req));
991 else
992 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req));
993 }
994
995 return 0;
996}
997
998/*****************************************************************************/
999/* requests implemented outside eio_execute, because they are so large */
1000
1001static void
1002eio__lseek (eio_req *req)
1003{
1004 /* this usually gets optimised away completely, or your compiler sucks, */
1005 /* or the whence constants really are not 0, 1, 2 */
1006 int whence = req->int2 == EIO_SEEK_SET ? SEEK_SET
1007 : req->int2 == EIO_SEEK_CUR ? SEEK_CUR
1008 : req->int2 == EIO_SEEK_END ? SEEK_END
1009 : req->int2;
1010
1011 req->offs = lseek (req->int1, req->offs, whence);
1012 req->result = req->offs == (off_t)-1 ? -1 : 0;
1013}
1014
1015/* result will always end up in tmpbuf, there is always space for adding a 0-byte */
1016static int
1017eio__realpath (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1018{
1019 char *res;
1020 const char *rel = path;
1021 char *tmp1, *tmp2;
1022#if SYMLOOP_MAX > 32
1023 int symlinks = SYMLOOP_MAX;
1024#else
1025 int symlinks = 32;
1026#endif
1027
1028 errno = EINVAL;
1029 if (!rel)
1030 return -1;
1031
1032 errno = ENOENT;
1033 if (!*rel)
1034 return -1;
1035
1036 res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3);
1037#ifdef _WIN32
1038 if (_access (rel, 4) != 0)
1039 return -1;
1040
1041 symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0);
1042
1043 errno = ENAMETOOLONG;
1044 if (symlinks >= EIO_PATH_MAX * 3)
1045 return -1;
1046
1047 errno = EIO;
1048 if (symlinks <= 0)
1049 return -1;
1050
1051 return symlinks;
1052
1053#else
1054 tmp1 = res + EIO_PATH_MAX;
1055 tmp2 = tmp1 + EIO_PATH_MAX;
1056
1057#if 0 /* disabled, the musl way to do things is just too racy */
1058#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME)
1059 /* on linux we may be able to ask the kernel */
1060 {
1061 int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME);
1062
1063 if (fd >= 0)
733 { 1064 {
1065 sprintf (tmp1, "/proc/self/fd/%d", fd);
1066 req->result = readlink (tmp1, res, EIO_PATH_MAX);
1067 /* here we should probably stat the open file and the disk file, to make sure they still match */
1068 eio__close (fd);
1069
1070 if (req->result > 0)
1071 goto done;
1072 }
1073 else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO)
1074 return -1;
1075 }
1076#endif
1077#endif
1078
1079 if (*rel != '/')
1080 {
1081 int len;
1082
734 errno = 0; 1083 errno = ENOENT;
735 readdir_r (dirp, &u->d, &entp); 1084 if (wd == EIO_INVALID_WD)
1085 return -1;
1086
1087 if (wd == EIO_CWD)
1088 {
1089 if (!getcwd (res, EIO_PATH_MAX))
1090 return -1;
736 1091
737 if (!entp) 1092 len = strlen (res);
1093 }
1094 else
1095 memcpy (res, wd->str, len = wd->len);
1096
1097 if (res [1]) /* only use if not / */
1098 res += len;
1099 }
1100
1101 while (*rel)
1102 {
1103 eio_ssize_t len, linklen;
1104 const char *beg = rel;
1105
1106 while (*rel && *rel != '/')
1107 ++rel;
1108
1109 len = rel - beg;
1110
1111 if (!len) /* skip slashes */
1112 {
738 break; 1113 ++rel;
1114 continue;
1115 }
739 1116
740 name = entp->d_name; 1117 if (beg [0] == '.')
1118 {
1119 if (len == 1)
1120 continue; /* . - nop */
741 1121
742 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1122 if (beg [1] == '.' && len == 2)
1123 {
1124 /* .. - back up one component, if possible */
1125
1126 while (res != tmpbuf->ptr)
1127 if (*--res == '/')
1128 break;
1129
1130 continue;
1131 }
1132 }
1133
1134 errno = ENAMETOOLONG;
1135 if (res + 1 + len + 1 >= tmp1)
1136 return -1;
1137
1138 /* copy one component */
1139 *res = '/';
1140 memcpy (res + 1, beg, len);
1141
1142 /* zero-terminate, for readlink */
1143 res [len + 1] = 0;
1144
1145 /* now check if it's a symlink */
1146 linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX);
1147
1148 if (linklen < 0)
743 { 1149 {
1150 if (errno != EINVAL)
1151 return -1;
1152
1153 /* it's a normal directory. hopefully */
1154 res += len + 1;
1155 }
1156 else
1157 {
1158 /* yay, it was a symlink - build new path in tmp2 */
744 int len = strlen (name) + 1; 1159 int rellen = strlen (rel);
745 1160
1161 errno = ENAMETOOLONG;
1162 if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */
1163 return -1;
1164
1165 errno = ELOOP;
1166 if (!--symlinks)
1167 return -1;
1168
1169 if (*tmp1 == '/')
1170 res = tmpbuf->ptr; /* symlink resolves to an absolute path */
1171
1172 /* we need to be careful, as rel might point into tmp2 already */
1173 memmove (tmp2 + linklen + 1, rel, rellen + 1);
1174 tmp2 [linklen] = '/';
1175 memcpy (tmp2, tmp1, linklen);
1176
1177 rel = tmp2;
1178 }
1179 }
1180
1181 /* special case for the lone root path */
1182 if (res == tmpbuf->ptr)
1183 *res++ = '/';
1184
1185 return res - (char *)tmpbuf->ptr;
1186#endif
1187}
1188
1189static signed char
1190eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1191{
1192 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1193 : a->inode < b->inode ? -1
1194 : a->inode > b->inode ? 1
1195 : 0;
1196}
1197
1198#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1199
1200#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1201#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1202
1203static void
1204eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1205{
1206 unsigned char bits [9 + sizeof (eio_ino_t) * 8];
1207 unsigned char *bit = bits;
1208
1209 assert (CHAR_BIT == 8);
1210 assert (sizeof (eio_dirent) * 8 < 256);
1211 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1212 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1213
1214 if (size <= EIO_SORT_FAST)
1215 return;
1216
1217 /* first prepare an array of bits to test in our radix sort */
1218 /* try to take endianness into account, as well as differences in eio_ino_t sizes */
1219 /* inode_bits must contain all inodes ORed together */
1220 /* which is used to skip bits that are 0 everywhere, which is very common */
1221 {
1222 eio_ino_t endianness;
1223 int i, j;
1224
1225 /* we store the byte offset of byte n into byte n of "endianness" */
1226 for (i = 0; i < sizeof (eio_ino_t); ++i)
1227 ((unsigned char *)&endianness)[i] = i;
1228
1229 *bit++ = 0;
1230
1231 for (i = 0; i < sizeof (eio_ino_t); ++i)
1232 {
1233 /* shifting off the byte offsets out of "endianness" */
1234 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1235 endianness >>= 8;
1236
1237 for (j = 0; j < 8; ++j)
1238 if (inode_bits & (((eio_ino_t)1) << (i * 8 + j)))
1239 *bit++ = offs + j;
1240 }
1241
1242 for (j = 0; j < 8; ++j)
1243 if (score_bits & (1 << j))
1244 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1245 }
1246
1247 /* now actually do the sorting (a variant of MSD radix sort) */
1248 {
1249 eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base;
1250 eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end;
1251 unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8];
1252 int stk_idx = 0;
1253
1254 base_stk [stk_idx] = dents;
1255 end_stk [stk_idx] = dents + size;
1256 bit_stk [stk_idx] = bit - 1;
1257
1258 do
1259 {
1260 base = base_stk [stk_idx];
1261 end = end_stk [stk_idx];
1262 bit = bit_stk [stk_idx];
1263
1264 for (;;)
1265 {
1266 unsigned char O = *bit >> 3;
1267 unsigned char M = 1 << (*bit & 7);
1268
1269 eio_dirent *a = base;
1270 eio_dirent *b = end;
1271
1272 if (b - a < EIO_SORT_CUTOFF)
746 res++; 1273 break;
747 1274
748 while (memofs + len > memlen) 1275 /* now bit-partition the array on the bit */
1276 /* this ugly asymmetric loop seems to perform much better than typical */
1277 /* partition algos found in the literature */
1278 do
1279 if (!(((unsigned char *)a)[O] & M))
1280 ++a;
1281 else if (!(((unsigned char *)--b)[O] & M))
749 { 1282 {
750 memlen *= 2; 1283 eio_dirent tmp = *a; *a = *b; *b = tmp;
751 X_LOCK (wrklock);
752 req->ptr2 = names = realloc (names, memlen);
753 X_UNLOCK (wrklock);
754
755 if (!names)
756 break; 1284 ++a;
757 } 1285 }
1286 while (b > a);
758 1287
759 memcpy (names + memofs, name, len); 1288 /* next bit, or stop, if no bits left in this path */
760 memofs += len; 1289 if (!*--bit)
1290 break;
1291
1292 base_stk [stk_idx] = a;
1293 end_stk [stk_idx] = end;
1294 bit_stk [stk_idx] = bit;
1295 ++stk_idx;
1296
1297 end = a;
761 } 1298 }
762 } 1299 }
763 1300 while (stk_idx--);
764 if (errno)
765 res = -1;
766 1301 }
1302}
1303
1304static void
1305eio_dent_insertion_sort (eio_dirent *dents, int size)
1306{
1307 /* first move the smallest element to the front, to act as a sentinel */
1308 {
1309 int i;
1310 eio_dirent *min = dents;
1311
1312 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1313 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1314 if (EIO_DENT_CMP (dents [i], <, *min))
1315 min = &dents [i];
1316
1317 /* swap elements 0 and j (minimum) */
1318 {
1319 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1320 }
1321 }
1322
1323 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1324 {
1325 eio_dirent *i, *j;
1326
1327 for (i = dents + 1; i < dents + size; ++i)
1328 {
1329 eio_dirent value = *i;
1330
1331 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1332 j [1] = j [0];
1333
1334 j [1] = value;
1335 }
1336 }
1337}
1338
1339static void
1340eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits)
1341{
1342 if (size <= 1)
1343 return; /* our insertion sort relies on size > 0 */
1344
1345 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1346 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1347 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1348
1349 /* use an insertion sort at the end, or for small arrays, */
1350 /* as insertion sort is more efficient for small partitions */
1351 eio_dent_insertion_sort (dents, size);
1352}
1353
1354/* read a full directory */
1355static void
1356eio__scandir (eio_req *req, etp_worker *self)
1357{
1358 char *name, *names;
1359 int namesalloc = 4096 - sizeof (void *) * 4;
1360 int namesoffs = 0;
1361 int flags = req->int1;
1362 eio_dirent *dents = 0;
1363 int dentalloc = 128;
1364 int dentoffs = 0;
1365 eio_ino_t inode_bits = 0;
1366#ifdef _WIN32
1367 HANDLE dirp;
1368 WIN32_FIND_DATA entp;
1369#else
1370 DIR *dirp;
1371 EIO_STRUCT_DIRENT *entp;
1372#endif
1373
767 req->result = res; 1374 req->result = -1;
1375
1376 if (!(flags & EIO_READDIR_DENTS))
1377 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1378
1379#ifdef _WIN32
1380 {
1381 int len = strlen ((const char *)req->ptr1);
1382 char *path = malloc (MAX_PATH);
1383 const char *fmt;
1384 const char *reqpath = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1385
1386 if (!len)
1387 fmt = "./*";
1388 else if (reqpath[len - 1] == '/' || reqpath[len - 1] == '\\')
1389 fmt = "%s*";
1390 else
1391 fmt = "%s/*";
1392
1393 _snprintf (path, MAX_PATH, fmt, reqpath);
1394 dirp = FindFirstFile (path, &entp);
1395 free (path);
1396
1397 if (dirp == INVALID_HANDLE_VALUE)
1398 {
1399 /* should steal _dosmaperr */
1400 switch (GetLastError ())
1401 {
1402 case ERROR_FILE_NOT_FOUND:
1403 req->result = 0;
1404 break;
1405
1406 case ERROR_INVALID_NAME:
1407 case ERROR_PATH_NOT_FOUND:
1408 case ERROR_NO_MORE_FILES:
1409 errno = ENOENT;
1410 break;
1411
1412 case ERROR_NOT_ENOUGH_MEMORY:
1413 errno = ENOMEM;
1414 break;
1415
1416 default:
1417 errno = EINVAL;
1418 break;
1419 }
1420
1421 return;
1422 }
1423 }
1424#else
1425 #if HAVE_AT
1426 {
1427 int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1428
1429 if (fd < 0)
1430 return;
1431
1432 dirp = fdopendir (fd);
1433
1434 if (!dirp)
1435 {
1436 silent_close (fd);
1437 return;
1438 }
1439 }
1440 #else
1441 dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1));
1442
1443 if (!dirp)
1444 return;
1445 #endif
1446#endif
1447
1448 if (req->flags & EIO_FLAG_PTR1_FREE)
1449 free (req->ptr1);
1450
1451 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1452 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1453 req->ptr2 = names = malloc (namesalloc);
1454
1455 if (!names || (flags && !dents))
1456 return;
1457
1458 for (;;)
1459 {
1460 int done;
1461
1462#ifdef _WIN32
1463 done = !dirp;
1464#else
1465 errno = 0;
1466 entp = readdir (dirp);
1467 done = !entp;
1468#endif
1469
1470 if (done)
1471 {
1472#ifndef _WIN32
1473 int old_errno = errno;
1474 closedir (dirp);
1475 errno = old_errno;
1476
1477 if (errno)
1478 break;
1479#endif
1480
1481 /* sort etc. */
1482 req->int1 = flags;
1483 req->result = dentoffs;
1484
1485 if (flags & EIO_READDIR_STAT_ORDER)
1486 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1487 else if (flags & EIO_READDIR_DIRS_FIRST)
1488 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1489 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1490 else
1491 {
1492 /* in this case, all is known, and we just put dirs first and sort them */
1493 eio_dirent *oth = dents + dentoffs;
1494 eio_dirent *dir = dents;
1495
1496 /* now partition dirs to the front, and non-dirs to the back */
1497 /* by walking from both sides and swapping if necessary */
1498 while (oth > dir)
1499 {
1500 if (dir->type == EIO_DT_DIR)
1501 ++dir;
1502 else if ((--oth)->type == EIO_DT_DIR)
1503 {
1504 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1505
1506 ++dir;
1507 }
1508 }
1509
1510 /* now sort the dirs only (dirs all have the same score) */
1511 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1512 }
1513
1514 break;
1515 }
1516
1517 /* now add the entry to our list(s) */
1518 name = D_NAME (entp);
1519
1520 /* skip . and .. entries */
1521 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1522 {
1523 int len = D_NAMLEN (entp) + 1;
1524
1525 while (ecb_expect_false (namesoffs + len > namesalloc))
1526 {
1527 namesalloc *= 2;
1528 req->ptr2 = names = realloc (names, namesalloc);
1529
1530 if (!names)
1531 break;
1532 }
1533
1534 memcpy (names + namesoffs, name, len);
1535
1536 if (dents)
1537 {
1538 struct eio_dirent *ent;
1539
1540 if (ecb_expect_false (dentoffs == dentalloc))
1541 {
1542 dentalloc *= 2;
1543 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1544
1545 if (!dents)
1546 break;
1547 }
1548
1549 ent = dents + dentoffs;
1550
1551 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1552 ent->namelen = len - 1;
1553 ent->inode = D_INO (entp);
1554
1555 inode_bits |= ent->inode;
1556
1557 switch (D_TYPE (entp))
1558 {
1559 default:
1560 ent->type = EIO_DT_UNKNOWN;
1561 flags |= EIO_READDIR_FOUND_UNKNOWN;
1562 break;
1563
1564 #ifdef DT_FIFO
1565 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1566 #endif
1567 #ifdef DT_CHR
1568 case DT_CHR: ent->type = EIO_DT_CHR; break;
1569 #endif
1570 #ifdef DT_MPC
1571 case DT_MPC: ent->type = EIO_DT_MPC; break;
1572 #endif
1573 #ifdef DT_DIR
1574 case DT_DIR: ent->type = EIO_DT_DIR; break;
1575 #endif
1576 #ifdef DT_NAM
1577 case DT_NAM: ent->type = EIO_DT_NAM; break;
1578 #endif
1579 #ifdef DT_BLK
1580 case DT_BLK: ent->type = EIO_DT_BLK; break;
1581 #endif
1582 #ifdef DT_MPB
1583 case DT_MPB: ent->type = EIO_DT_MPB; break;
1584 #endif
1585 #ifdef DT_REG
1586 case DT_REG: ent->type = EIO_DT_REG; break;
1587 #endif
1588 #ifdef DT_NWK
1589 case DT_NWK: ent->type = EIO_DT_NWK; break;
1590 #endif
1591 #ifdef DT_CMP
1592 case DT_CMP: ent->type = EIO_DT_CMP; break;
1593 #endif
1594 #ifdef DT_LNK
1595 case DT_LNK: ent->type = EIO_DT_LNK; break;
1596 #endif
1597 #ifdef DT_SOCK
1598 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1599 #endif
1600 #ifdef DT_DOOR
1601 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1602 #endif
1603 #ifdef DT_WHT
1604 case DT_WHT: ent->type = EIO_DT_WHT; break;
1605 #endif
1606 }
1607
1608 ent->score = 7;
1609
1610 if (flags & EIO_READDIR_DIRS_FIRST)
1611 {
1612 if (ent->type == EIO_DT_UNKNOWN)
1613 {
1614 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1615 ent->score = 1;
1616 else if (!strchr (name, '.')) /* absence of dots indicate likely dirs */
1617 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1618 }
1619 else if (ent->type == EIO_DT_DIR)
1620 ent->score = 0;
1621 }
1622 }
1623
1624 namesoffs += len;
1625 ++dentoffs;
1626 }
1627
1628 if (EIO_CANCELLED (req))
1629 {
1630 errno = ECANCELED;
1631 break;
1632 }
1633
1634#ifdef _WIN32
1635 if (!FindNextFile (dirp, &entp))
1636 {
1637 FindClose (dirp);
1638 dirp = 0;
1639 }
1640#endif
1641 }
768} 1642}
1643
1644/*****************************************************************************/
1645/* working directory stuff */
1646/* various deficiencies in the posix 2008 api force us to */
1647/* keep the absolute path in string form at all times */
1648/* fuck yeah. */
1649
1650#if !HAVE_AT
1651
1652/* a bit like realpath, but usually faster because it doesn't have to return */
1653/* an absolute or canonical path */
1654static const char *
1655wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1656{
1657 if (!wd || *path == '/')
1658 return path;
1659
1660 if (path [0] == '.' && !path [1])
1661 return wd->str;
1662
1663 {
1664 int l1 = wd->len;
1665 int l2 = strlen (path);
1666
1667 char *res = etp_tmpbuf_get (tmpbuf, l1 + l2 + 2);
1668
1669 memcpy (res, wd->str, l1);
1670 res [l1] = '/';
1671 memcpy (res + l1 + 1, path, l2 + 1);
1672
1673 return res;
1674 }
1675}
1676
1677#endif
1678
1679static eio_wd
1680eio__wd_open_sync (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path)
1681{
1682 int fd;
1683 eio_wd res;
1684 int len = eio__realpath (tmpbuf, wd, path);
1685
1686 if (len < 0)
1687 return EIO_INVALID_WD;
1688
1689#if HAVE_AT
1690 fd = openat (WD2FD (wd), path, EIO_O_PATH | O_DIRECTORY | O_NONBLOCK | O_CLOEXEC);
1691
1692 /* 0 is a valid fd, but we use it for EIO_CWD, so in the very unlikely */
1693 /* case of fd 0 being available (almost certainly an a pplication bug) */
1694 /* make sure we use another fd value */
1695 #if EIO_CWD
1696 error EIO_CWD must be 0
1697 #endif
1698 if (ecb_expect_false (fd == 0))
1699 {
1700 int fd2 = fcntl (fd, F_DUPFD_CLOEXEC ? F_DUPFD_CLOEXEC : F_DUPFD);
1701 fcntl (fd2, F_SETFD, FD_CLOEXEC);
1702 eio__close (fd);
1703 fd = fd2;
1704 }
1705
1706 if (fd < 0)
1707 return EIO_INVALID_WD;
1708#endif
1709
1710 res = malloc (sizeof (*res) + len); /* one extra 0-byte */
1711
1712#if HAVE_AT
1713 res->fd = fd;
1714#endif
1715
1716 res->len = len;
1717 memcpy (res->str, tmpbuf->ptr, len);
1718 res->str [len] = 0;
1719
1720 return res;
1721}
1722
1723eio_wd
1724eio_wd_open_sync (eio_wd wd, const char *path)
1725{
1726 struct etp_tmpbuf tmpbuf = { 0 };
1727 wd = eio__wd_open_sync (&tmpbuf, wd, path);
1728 free (tmpbuf.ptr);
1729
1730 return wd;
1731}
1732
1733void
1734eio_wd_close_sync (eio_wd wd)
1735{
1736 if (wd != EIO_INVALID_WD && wd != EIO_CWD)
1737 {
1738 #if HAVE_AT
1739 eio__close (wd->fd);
1740 #endif
1741 free (wd);
1742 }
1743}
1744
1745#if HAVE_AT
1746
1747static int
1748eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags)
1749{
1750#if HAVE_RENAMEAT2
1751 return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags);
1752#else
1753 if (flags)
1754 return EIO_ENOSYS ();
1755
1756 return renameat (olddirfd, oldpath, newdirfd, newpath);
1757#endif
1758}
1759
1760/* they forgot these */
1761
1762static int
1763eio__truncateat (int dirfd, const char *path, off_t length)
1764{
1765 int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC | O_NONBLOCK);
1766 int res;
1767
1768 if (fd < 0)
1769 return fd;
1770
1771 res = ftruncate (fd, length);
1772 silent_close (fd);
1773 return res;
1774}
1775
1776static int
1777eio__statvfsat (int dirfd, const char *path, struct statvfs *buf)
1778{
1779 int fd = openat (dirfd, path, EIO_O_PATH | O_CLOEXEC | O_NONBLOCK);
1780 int res;
1781
1782 if (fd < 0)
1783 return fd;
1784
1785 res = fstatvfs (fd, buf);
1786 silent_close (fd);
1787 return res;
1788}
1789
1790#endif
769 1791
770/*****************************************************************************/ 1792/*****************************************************************************/
771 1793
772#define ALLOC(len) \ 1794#define ALLOC(len) \
773 if (!req->ptr2) \ 1795 if (!req->ptr2) \
774 { \ 1796 { \
775 X_LOCK (wrklock); \ 1797 X_LOCK (EIO_POOL->wrklock); \
776 req->flags |= EIO_FLAG_PTR2_FREE; \ 1798 req->flags |= EIO_FLAG_PTR2_FREE; \
777 X_UNLOCK (wrklock); \ 1799 X_UNLOCK (EIO_POOL->wrklock); \
778 req->ptr2 = malloc (len); \ 1800 req->ptr2 = malloc (len); \
779 if (!req->ptr2) \ 1801 if (!req->ptr2) \
780 { \ 1802 { \
781 errno = ENOMEM; \ 1803 errno = ENOMEM; \
782 req->result = -1; \ 1804 req->result = -1; \
783 break; \ 1805 goto alloc_fail; \
784 } \ 1806 } \
785 } 1807 }
786 1808
787X_THREAD_PROC (eio_proc) 1809/*****************************************************************************/
788{
789 eio_req *req;
790 struct timespec ts;
791 worker *self = (worker *)thr_arg;
792 1810
793 /* try to distribute timeouts somewhat randomly */ 1811static void
794 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); 1812eio__slurp (int fd, eio_req *req)
1813{
1814 req->result = fd;
795 1815
796 for (;;) 1816 if (fd < 0)
1817 return;
1818
1819 if (req->offs < 0 || !req->size) /* do we need the size? */
797 { 1820 {
798 ts.tv_sec = time (0) + IDLE_TIMEOUT; 1821 off_t size = lseek (fd, 0, SEEK_END);
799 1822
800 X_LOCK (reqlock); 1823 if (req->offs < 0)
1824 req->offs += size;
801 1825
802 for (;;) 1826 if (!req->size)
803 { 1827 req->size = size - req->offs;
804 self->req = req = reqq_shift (&req_queue);
805
806 if (req)
807 break;
808
809 ++idle;
810
811 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
812 {
813 if (idle > max_idle)
814 {
815 --idle;
816 X_UNLOCK (reqlock);
817 X_LOCK (wrklock);
818 --started;
819 X_UNLOCK (wrklock);
820 goto quit;
821 }
822
823 /* we are allowed to idle, so do so without any timeout */
824 X_COND_WAIT (reqwait, reqlock);
825 ts.tv_sec = time (0) + IDLE_TIMEOUT;
826 }
827
828 --idle;
829 }
830
831 --nready;
832
833 X_UNLOCK (reqlock);
834
835 errno = 0; /* strictly unnecessary */
836
837 if (!EIO_CANCELLED (req))
838 switch (req->type)
839 {
840 case EIO_READ: ALLOC (req->size);
841 req->result = req->offs >= 0
842 ? pread (req->int1, req->ptr2, req->size, req->offs)
843 : read (req->int1, req->ptr2, req->size); break;
844 case EIO_WRITE: req->result = req->offs >= 0
845 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
846 : write (req->int1, req->ptr2, req->size); break;
847
848 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
849 case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
850
851 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
852 req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
853 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
854 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
855 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
856 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
857
858 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
859 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
860 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
861 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
862 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
863 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
864
865 case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
866 case EIO_CLOSE: req->result = close (req->int1); break;
867 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
868 case EIO_UNLINK: req->result = unlink (req->ptr1); break;
869 case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
870 case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
871 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
872 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
873 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
874 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
875
876 case EIO_READLINK: ALLOC (NAME_MAX);
877 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
878
879 case EIO_SYNC: req->result = 0; sync (); break;
880 case EIO_FSYNC: req->result = fsync (req->int1); break;
881 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
882
883 case EIO_READDIR: scandir_ (req, self); break;
884
885 case EIO_BUSY:
886#ifdef _WIN32
887 Sleep (req->nv1 * 1000.);
888#else
889 {
890 struct timeval tv;
891
892 tv.tv_sec = req->nv1;
893 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
894
895 req->result = select (0, 0, 0, 0, &tv);
896 }
897#endif
898 break;
899
900 case EIO_UTIME:
901 case EIO_FUTIME:
902 {
903 struct timeval tv[2];
904 struct timeval *times;
905
906 if (req->nv1 != -1. || req->nv2 != -1.)
907 {
908 tv[0].tv_sec = req->nv1;
909 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
910 tv[1].tv_sec = req->nv2;
911 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
912
913 times = tv;
914 }
915 else
916 times = 0;
917
918
919 req->result = req->type == EIO_FUTIME
920 ? futimes (req->int1, times)
921 : utimes (req->ptr1, times);
922 }
923
924 case EIO_GROUP:
925 case EIO_NOP:
926 break;
927
928 case EIO_QUIT:
929 goto quit;
930
931 default:
932 req->result = -1;
933 break;
934 }
935
936 req->errorno = errno;
937
938 X_LOCK (reslock);
939
940 ++npending;
941
942 if (!reqq_push (&res_queue, req) && want_poll_cb)
943 want_poll_cb ();
944
945 self->req = 0;
946 worker_clear (self);
947
948 X_UNLOCK (reslock);
949 } 1828 }
950 1829
951quit: 1830 ALLOC (req->size);
952 X_LOCK (wrklock); 1831 req->result = pread (fd, req->ptr2, req->size, req->offs);
953 worker_free (self);
954 X_UNLOCK (wrklock);
955 1832
956 return 0; 1833 silent_close (fd);
957}
958 1834
959/*****************************************************************************/ 1835alloc_fail:
960 1836 ;
961static void eio_atfork_prepare (void)
962{
963 X_LOCK (wrklock);
964 X_LOCK (reqlock);
965 X_LOCK (reslock);
966#if !HAVE_PREADWRITE
967 X_LOCK (preadwritelock);
968#endif
969#if !HAVE_READDIR_R
970 X_LOCK (readdirlock);
971#endif
972} 1837}
973 1838
974static void eio_atfork_parent (void) 1839int ecb_cold
975{
976#if !HAVE_READDIR_R
977 X_UNLOCK (readdirlock);
978#endif
979#if !HAVE_PREADWRITE
980 X_UNLOCK (preadwritelock);
981#endif
982 X_UNLOCK (reslock);
983 X_UNLOCK (reqlock);
984 X_UNLOCK (wrklock);
985}
986
987static void eio_atfork_child (void)
988{
989 eio_req *prv;
990
991 while (prv = reqq_shift (&req_queue))
992 eio_destroy (prv);
993
994 while (prv = reqq_shift (&res_queue))
995 eio_destroy (prv);
996
997 while (wrk_first.next != &wrk_first)
998 {
999 worker *wrk = wrk_first.next;
1000
1001 if (wrk->req)
1002 eio_destroy (wrk->req);
1003
1004 worker_clear (wrk);
1005 worker_free (wrk);
1006 }
1007
1008 started = 0;
1009 idle = 0;
1010 nreqs = 0;
1011 nready = 0;
1012 npending = 0;
1013
1014 eio_atfork_parent ();
1015}
1016
1017int eio_init (void (*want_poll)(void), void (*done_poll)(void)) 1840eio_init (void (*want_poll)(void), void (*done_poll)(void))
1018{ 1841{
1019 want_poll_cb = want_poll; 1842 eio_want_poll_cb = want_poll;
1020 done_poll_cb = done_poll; 1843 eio_done_poll_cb = done_poll;
1021 1844
1022#ifdef _WIN32 1845 return etp_init (EIO_POOL, 0, 0, 0);
1023 X_MUTEX_CHECK (wrklock);
1024 X_MUTEX_CHECK (reslock);
1025 X_MUTEX_CHECK (reqlock);
1026 X_MUTEX_CHECK (reqwait);
1027 X_MUTEX_CHECK (preadwritelock);
1028 X_MUTEX_CHECK (readdirlock);
1029
1030 X_COND_CHECK (reqwait);
1031#endif
1032
1033 X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child);
1034} 1846}
1035 1847
1848ecb_inline void
1036static void eio_api_destroy (eio_req *req) 1849eio_api_destroy (eio_req *req)
1037{ 1850{
1038 free (req); 1851 free (req);
1039} 1852}
1040 1853
1041#define REQ(rtype) \ 1854#define REQ(rtype) \
1042 eio_req *req; \ 1855 eio_req *req; \
1043 \ 1856 \
1044 req = (eio_req *)calloc (1, sizeof *req); \ 1857 req = (eio_req *)calloc (1, sizeof *req); \
1045 if (!req) \ 1858 if (!req) \
1046 return 0; \ 1859 return 0; \
1047 \ 1860 \
1048 req->type = EIO_ ## rtype; \ 1861 req->type = rtype; \
1049 req->pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \ 1862 req->pri = pri; \
1050 req->finish = cb; \ 1863 req->finish = cb; \
1864 req->data = data; \
1051 req->destroy = eio_api_destroy; 1865 req->destroy = eio_api_destroy;
1052 1866
1053#define SEND eio_submit (req); return req 1867#define SEND eio_submit (req); return req
1054 1868
1055#define PATH (void)0 1869#define PATH \
1870 req->flags |= EIO_FLAG_PTR1_FREE; \
1871 req->ptr1 = strdup (path); \
1872 if (!req->ptr1) \
1873 { \
1874 eio_api_destroy (req); \
1875 return 0; \
1876 }
1056 1877
1878#define SINGLEDOT(ptr) (0[(char *)(ptr)] == '.' && !1[(char *)(ptr)])
1879
1880static void
1881eio_execute (etp_worker *self, eio_req *req)
1882{
1883#if HAVE_AT
1884 int dirfd;
1885#else
1886 const char *path;
1887#endif
1888
1889 if (ecb_expect_false (EIO_CANCELLED (req)))
1890 {
1891 req->result = -1;
1892 req->errorno = ECANCELED;
1893 return;
1894 }
1895
1896 if (ecb_expect_false (req->wd == EIO_INVALID_WD))
1897 {
1898 req->result = -1;
1899 req->errorno = ENOENT;
1900 return;
1901 }
1902
1903 if (req->type >= EIO_OPEN)
1904 {
1905 #if HAVE_AT
1906 dirfd = WD2FD (req->wd);
1907 #else
1908 path = wd_expand (&self->tmpbuf, req->wd, req->ptr1);
1909 #endif
1910 }
1911
1912 switch (req->type)
1913 {
1914 case EIO_WD_OPEN: req->wd = eio__wd_open_sync (&self->tmpbuf, req->wd, req->ptr1);
1915 req->result = req->wd == EIO_INVALID_WD ? -1 : 0;
1916 break;
1917 case EIO_WD_CLOSE: req->result = 0;
1918 eio_wd_close_sync (req->wd); break;
1919
1920 case EIO_SEEK: eio__lseek (req); break;
1921 case EIO_READ: ALLOC (req->size);
1922 req->result = req->offs >= 0
1923 ? pread (req->int1, req->ptr2, req->size, req->offs)
1924 : read (req->int1, req->ptr2, req->size); break;
1925 case EIO_WRITE: req->result = req->offs >= 0
1926 ? pwrite (req->int1, req->ptr2, req->size, req->offs)
1927 : write (req->int1, req->ptr2, req->size); break;
1928
1929 case EIO_FCNTL: req->result = fcntl (req->int1, (int) req->int2, req->ptr2); break;
1930 case EIO_IOCTL: req->result = ioctl (req->int1, (unsigned long)req->int2, req->ptr2); break;
1931
1932 case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1933 case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break;
1934
1935#if HAVE_AT
1936
1937 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1938 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, 0); break;
1939 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1940 req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break;
1941 case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break;
1942 case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break;
1943 case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break;
1944 case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break;
1945 case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break;
1946
1947 case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break;
1948 case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */
1949 req->result = req->wd && SINGLEDOT (req->ptr1)
1950 ? rmdir (req->wd->str)
1951 : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break;
1952 case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break;
1953 case EIO_RENAME: req->result = eio__renameat2 (
1954 dirfd,
1955 /* complications arise because "." cannot be renamed, so we might have to expand */
1956 req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1,
1957 WD2FD ((eio_wd)req->int3),
1958 req->ptr2,
1959 req->int2
1960 );
1961 break;
1962 case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break;
1963 case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break;
1964 case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1965 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1966 req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1967 case EIO_READLINK: ALLOC (EIO_PATH_MAX);
1968 req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX);
1969 if (req->result == EIO_PATH_MAX)
1970 {
1971 req->result = -1;
1972 errno = ENAMETOOLONG;
1973 }
1974 break;
1975 case EIO_UTIME:
1976 case EIO_FUTIME:
1977 {
1978 struct timespec ts[2];
1979 struct timespec *times;
1980
1981 if (req->nv1 != -1. || req->nv2 != -1.)
1982 {
1983 ts[0].tv_sec = req->nv1;
1984 ts[0].tv_nsec = (req->nv1 - ts[0].tv_sec) * 1e9;
1985 ts[1].tv_sec = req->nv2;
1986 ts[1].tv_nsec = (req->nv2 - ts[1].tv_sec) * 1e9;
1987
1988 times = ts;
1989 }
1990 else
1991 times = 0;
1992
1993 req->result = req->type == EIO_FUTIME
1994 ? futimens (req->int1, times)
1995 : utimensat (dirfd, req->ptr1, times, 0);
1996 }
1997 break;
1998
1999#else
2000
2001 case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2002 req->result = stat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2003 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2004 req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break;
2005 case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break;
2006 case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break;
2007 case EIO_TRUNCATE: req->result = truncate (path , req->offs); break;
2008 case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break;
2009 case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break;
2010
2011 case EIO_UNLINK: req->result = unlink (path ); break;
2012 case EIO_RMDIR: req->result = rmdir (path ); break;
2013 case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break;
2014 case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break;
2015 case EIO_LINK: req->result = link (path , req->ptr2); break;
2016 case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break;
2017 case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break;
2018 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2019 req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break;
2020 case EIO_READLINK: ALLOC (EIO_PATH_MAX);
2021 req->result = readlink (path, req->ptr2, EIO_PATH_MAX);
2022 if (req->result == EIO_PATH_MAX)
2023 {
2024 req->result = -1;
2025 errno = ENAMETOOLONG;
2026 }
2027 break;
2028
2029 case EIO_UTIME:
2030 case EIO_FUTIME:
2031 {
2032 struct timeval tv[2];
2033 struct timeval *times;
2034
2035 if (req->nv1 != -1. || req->nv2 != -1.)
2036 {
2037 tv[0].tv_sec = req->nv1;
2038 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1e6;
2039 tv[1].tv_sec = req->nv2;
2040 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1e6;
2041
2042 times = tv;
2043 }
2044 else
2045 times = 0;
2046
2047 req->result = req->type == EIO_FUTIME
2048 ? futimes (req->int1, times)
2049 : utimes (req->ptr1, times);
2050 }
2051 break;
2052
2053#endif
2054
2055 case EIO_REALPATH: if (0 <= (req->result = eio__realpath (&self->tmpbuf, req->wd, req->ptr1)))
2056 {
2057 ALLOC (req->result);
2058 memcpy (req->ptr2, self->tmpbuf.ptr, req->result);
2059 }
2060 break;
2061
2062 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
2063 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
2064
2065 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
2066 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
2067
2068 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
2069 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
2070 case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
2071
2072 case EIO_CLOSE: req->result = eio__close (req->int1); break;
2073 case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
2074 case EIO_SYNC: req->result = 0; sync (); break;
2075 case EIO_FSYNC: req->result = fsync (req->int1); break;
2076 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
2077 case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break;
2078 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
2079 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
2080 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
2081 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
2082 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
2083 case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break;
2084
2085 case EIO_READDIR: eio__scandir (req, self); break;
2086
2087 case EIO_BUSY:
2088#ifdef _WIN32
2089 Sleep (req->nv1 * 1e3);
2090#else
2091 {
2092 struct timeval tv;
2093
2094 tv.tv_sec = req->nv1;
2095 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
2096
2097 req->result = select (0, 0, 0, 0, &tv);
2098 }
2099#endif
2100 break;
2101
2102#if 0
2103 case EIO_GROUP:
2104 abort (); /* handled in eio_request */
2105#endif
2106
2107 case EIO_NOP:
2108 req->result = 0;
2109 break;
2110
2111 case EIO_CUSTOM:
2112 req->feed (req);
2113 break;
2114
2115 default:
2116 req->result = EIO_ENOSYS ();
2117 break;
2118 }
2119
2120alloc_fail:
2121 req->errorno = errno;
2122}
2123
2124#ifndef EIO_NO_WRAPPERS
2125
2126eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data)
2127{
2128 REQ (EIO_WD_OPEN); PATH; SEND;
2129}
2130
2131eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data)
2132{
2133 REQ (EIO_WD_CLOSE); req->wd = wd; SEND;
2134}
2135
2136eio_req *eio_nop (int pri, eio_cb cb, void *data)
2137{
2138 REQ (EIO_NOP); SEND;
2139}
2140
2141eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data)
2142{
2143 REQ (EIO_BUSY); req->nv1 = delay; SEND;
2144}
2145
1057eio_req *eio_fsync (int fd, eio_cb cb) 2146eio_req *eio_sync (int pri, eio_cb cb, void *data)
1058{ 2147{
2148 REQ (EIO_SYNC); SEND;
2149}
2150
2151eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
2152{
1059 REQ (FSYNC); req->int1 = fd; SEND; 2153 REQ (EIO_FSYNC); req->int1 = fd; SEND;
1060} 2154}
1061 2155
2156eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2157{
2158 REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2159}
2160
1062eio_req *eio_fdatasync (int fd, eio_cb cb) 2161eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
1063{ 2162{
1064 REQ (FDATASYNC); req->int1 = fd; SEND; 2163 REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1065} 2164}
1066 2165
2166eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data)
2167{
2168 REQ (EIO_SYNCFS); req->int1 = fd; SEND;
2169}
2170
2171eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
2172{
2173 REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
2174}
2175
2176eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
2177{
2178 REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
2179}
2180
2181eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
2182{
2183 REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
2184}
2185
2186eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
2187{
2188 REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
2189}
2190
2191eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data)
2192{
2193 REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND;
2194}
2195
2196eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
2197{
2198 REQ (EIO_CLOSE); req->int1 = fd; SEND;
2199}
2200
1067eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb) 2201eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
1068{ 2202{
1069 REQ (READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; 2203 REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
1070} 2204}
1071 2205
1072eio_req *eio_read (int fd, off_t offset, size_t length, void *data, eio_cb cb) 2206eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data)
1073{ 2207{
2208 REQ (EIO_SEEK); req->int1 = fd; req->offs = offset; req->int2 = whence; SEND;
2209}
2210
2211eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2212{
1074 REQ (READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND; 2213 REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1075} 2214}
1076 2215
1077eio_req *eio_write (int fd, off_t offset, size_t length, void *data, eio_cb cb) 2216eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
1078{ 2217{
1079 REQ (WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = data; SEND; 2218 REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
1080} 2219}
1081 2220
2221eio_req *eio_fcntl (int fd, int cmd, void *arg, int pri, eio_cb cb, void *data)
2222{
2223 REQ (EIO_IOCTL); req->int1 = fd; req->int2 = cmd; req->ptr2 = arg; SEND;
2224}
2225
2226eio_req *eio_ioctl (int fd, unsigned long request, void *buf, int pri, eio_cb cb, void *data)
2227{
2228 REQ (EIO_IOCTL); req->int1 = fd; req->int2 = request; req->ptr2 = buf; SEND;
2229}
2230
1082eio_req *eio_fstat (int fd, eio_cb cb) 2231eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1083{ 2232{
1084 REQ (FSTAT); req->int1 = fd; SEND; 2233 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1085} 2234}
1086 2235
2236eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
2237{
2238 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
2239}
2240
1087eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb) 2241eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1088{ 2242{
1089 REQ (FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 2243 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1090} 2244}
1091 2245
1092eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb) 2246eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data)
1093{ 2247{
1094 REQ (FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; 2248 REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;
1095} 2249}
1096 2250
1097eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb) 2251eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
1098{ 2252{
1099 REQ (FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; 2253 REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
1100} 2254}
1101 2255
1102eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb) 2256eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1103{ 2257{
1104 REQ (FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2258 REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1105} 2259}
1106 2260
1107eio_req *eio_dup2 (int fd, int fd2, eio_cb cb) 2261eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
1108{ 2262{
1109 REQ (DUP2); req->int1 = fd; req->int2 = fd2; SEND; 2263 REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND;
1110} 2264}
1111 2265
1112eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb) 2266eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data)
1113{ 2267{
1114 REQ (SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; 2268 REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;
1115} 2269}
1116 2270
1117eio_req *eio_open (const char *path, int flags, mode_t mode, eio_cb cb) 2271eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data)
1118{ 2272{
1119 REQ (OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; 2273 REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;
1120} 2274}
1121 2275
1122eio_req *eio_readlink (const char *path, eio_cb cb)
1123{
1124 REQ (READLINK); PATH; SEND;
1125}
1126
1127eio_req *eio_stat (const char *path, eio_cb cb)
1128{
1129 REQ (STAT); PATH; SEND;
1130}
1131
1132eio_req *eio_lstat (const char *path, eio_cb cb)
1133{
1134 REQ (LSTAT); PATH; SEND;
1135}
1136
1137eio_req *eio_utime (const char *path, double atime, double mtime, eio_cb cb) 2276eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data)
1138{ 2277{
1139 REQ (UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; 2278 REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;
1140} 2279}
1141 2280
1142eio_req *eio_truncate (const char *path, off_t offset, eio_cb cb) 2281eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
1143{ 2282{
1144 REQ (TRUNCATE); PATH; req->offs = offset; SEND; 2283 REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
1145} 2284}
1146 2285
1147eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, eio_cb cb) 2286eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data)
1148{ 2287{
1149 REQ (CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; 2288 REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
1150} 2289}
1151 2290
1152eio_req *eio_chmod (const char *path, mode_t mode, eio_cb cb) 2291eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
1153{ 2292{
1154 REQ (CHMOD); PATH; req->int2 = (long)mode; SEND; 2293 REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND;
1155} 2294}
1156 2295
1157eio_req *eio_mkdir (const char *path, mode_t mode, eio_cb cb) 2296eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
1158{ 2297{
1159 REQ (MKDIR); PATH; req->int2 = (long)mode; SEND; 2298 REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND;
1160} 2299}
1161 2300
1162eio_req *eio_unlink (const char *path, eio_cb cb) 2301static eio_req *
2302eio__1path (int type, const char *path, int pri, eio_cb cb, void *data)
1163{ 2303{
1164 REQ (UNLINK); PATH; SEND;
1165}
1166
1167eio_req *eio_rmdir (const char *path, eio_cb cb)
1168{
1169 REQ (RMDIR); PATH; SEND; 2304 REQ (type); PATH; SEND;
1170} 2305}
1171 2306
2307eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
2308{
2309 return eio__1path (EIO_READLINK, path, pri, cb, data);
2310}
2311
2312eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data)
2313{
2314 return eio__1path (EIO_REALPATH, path, pri, cb, data);
2315}
2316
2317eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
2318{
2319 return eio__1path (EIO_STAT, path, pri, cb, data);
2320}
2321
2322eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
2323{
2324 return eio__1path (EIO_LSTAT, path, pri, cb, data);
2325}
2326
2327eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
2328{
2329 return eio__1path (EIO_STATVFS, path, pri, cb, data);
2330}
2331
2332eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
2333{
2334 return eio__1path (EIO_UNLINK, path, pri, cb, data);
2335}
2336
1172eio_req *eio_readdir (const char *path, eio_cb cb) 2337eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1173{ 2338{
1174 REQ (READDIR); PATH; SEND; 2339 return eio__1path (EIO_RMDIR, path, pri, cb, data);
1175} 2340}
1176 2341
2342eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
2343{
2344 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
2345}
2346
1177eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, eio_cb cb) 2347eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1178{ 2348{
1179 REQ (MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND; 2349 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1180} 2350}
1181 2351
1182eio_req *eio_busy (double delay, eio_cb cb) 2352static eio_req *
2353eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1183{ 2354{
1184 REQ (BUSY); req->nv1 = delay; SEND; 2355 REQ (type); PATH;
1185}
1186 2356
2357 req->flags |= EIO_FLAG_PTR2_FREE;
2358 req->ptr2 = strdup (new_path);
2359 if (!req->ptr2)
2360 {
2361 eio_api_destroy (req);
2362 return 0;
2363 }
2364
2365 SEND;
2366}
2367
2368eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2369{
2370 return eio__2path (EIO_LINK, path, new_path, pri, cb, data);
2371}
2372
2373eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2374{
2375 return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data);
2376}
2377
2378eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
2379{
2380 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
2381}
2382
2383eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
2384{
2385 REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
2386}
2387
2388eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
2389{
2390 REQ (EIO_CUSTOM); req->feed = execute; SEND;
2391}
2392
2393#endif
2394
1187eio_req *eio_nop (eio_cb cb) 2395eio_req *eio_grp (eio_cb cb, void *data)
1188{ 2396{
2397 const int pri = EIO_PRI_MAX;
2398
1189 REQ (NOP); SEND; 2399 REQ (EIO_GROUP); SEND;
1190} 2400}
1191 2401
1192#undef REQ 2402#undef REQ
1193#undef PATH 2403#undef PATH
1194#undef SEND 2404#undef SEND
1195 2405
1196#if 0 2406/*****************************************************************************/
2407/* grp functions */
1197 2408
1198void 2409void
1199aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1200 PROTOTYPE: $$$;$
1201 PPCODE:
1202{
1203 dREQ;
1204
1205 req->type = EIO_OPEN;
1206 req->sv1 = newSVsv (pathname);
1207 req->ptr1 = SvPVbyte_nolen (req->sv1);
1208 req->int1 = flags;
1209 req->int2 = mode;
1210
1211 EIO_SEND;
1212}
1213
1214void
1215aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1216 PROTOTYPE: $;$
1217 ALIAS:
1218 aio_fsync = EIO_FSYNC
1219 aio_fdatasync = EIO_FDATASYNC
1220 PPCODE:
1221{
1222 dREQ;
1223
1224 req->type = ix;
1225 req->sv1 = newSVsv (fh);
1226 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1227
1228 EIO_SEND (req);
1229}
1230
1231void
1232aio_close (SV *fh, SV *callback=&PL_sv_undef)
1233 PROTOTYPE: $;$
1234 PPCODE:
1235{
1236 dREQ;
1237
1238 req->type = EIO_CLOSE;
1239 req->sv1 = newSVsv (fh);
1240 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1241
1242 EIO_SEND (req);
1243}
1244
1245void
1246aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1247 ALIAS:
1248 aio_read = EIO_READ
1249 aio_write = EIO_WRITE
1250 PROTOTYPE: $$$$$;$
1251 PPCODE:
1252{
1253 STRLEN svlen;
1254 char *svptr = SvPVbyte (data, svlen);
1255 UV len = SvUV (length);
1256
1257 SvUPGRADE (data, SVt_PV);
1258 SvPOK_on (data);
1259
1260 if (dataoffset < 0)
1261 dataoffset += svlen;
1262
1263 if (dataoffset < 0 || dataoffset > svlen)
1264 croak ("dataoffset outside of data scalar");
1265
1266 if (ix == EIO_WRITE)
1267 {
1268 /* write: check length and adjust. */
1269 if (!SvOK (length) || len + dataoffset > svlen)
1270 len = svlen - dataoffset;
1271 }
1272 else
1273 {
1274 /* read: grow scalar as necessary */
1275 svptr = SvGROW (data, len + dataoffset + 1);
1276 }
1277
1278 if (len < 0)
1279 croak ("length must not be negative");
1280
1281 {
1282 dREQ;
1283
1284 req->type = ix;
1285 req->sv1 = newSVsv (fh);
1286 req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1287 : IoOFP (sv_2io (fh)));
1288 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1289 req->size = len;
1290 req->sv2 = SvREFCNT_inc (data);
1291 req->ptr2 = (char *)svptr + dataoffset;
1292 req->stroffset = dataoffset;
1293
1294 if (!SvREADONLY (data))
1295 {
1296 SvREADONLY_on (data);
1297 req->flags |= FLAG_SV2_RO_OFF;
1298 }
1299
1300 EIO_SEND;
1301 }
1302}
1303
1304void
1305aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1306 PROTOTYPE: $$;$
1307 PPCODE:
1308{
1309 SV *data;
1310 dREQ;
1311
1312 data = newSV (NAME_MAX);
1313 SvPOK_on (data);
1314
1315 req->type = EIO_READLINK;
1316 req->sv1 = newSVsv (path);
1317 req->ptr1 = SvPVbyte_nolen (req->sv1);
1318 req->sv2 = data;
1319 req->ptr2 = SvPVbyte_nolen (data);
1320
1321 EIO_SEND;
1322}
1323
1324void
1325aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1326 PROTOTYPE: $$$$;$
1327 PPCODE:
1328{
1329 dREQ;
1330
1331 req->type = EIO_SENDFILE;
1332 req->sv1 = newSVsv (out_fh);
1333 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1334 req->sv2 = newSVsv (in_fh);
1335 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1336 req->offs = SvVAL64 (in_offset);
1337 req->size = length;
1338
1339 EIO_SEND;
1340}
1341
1342void
1343aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1344 PROTOTYPE: $$$;$
1345 PPCODE:
1346{
1347 dREQ;
1348
1349 req->type = EIO_READAHEAD;
1350 req->sv1 = newSVsv (fh);
1351 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1352 req->offs = SvVAL64 (offset);
1353 req->size = length;
1354
1355 EIO_SEND;
1356}
1357
1358void
1359aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1360 ALIAS:
1361 aio_stat = EIO_STAT
1362 aio_lstat = EIO_LSTAT
1363 PPCODE:
1364{
1365 dREQ;
1366
1367 req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1368 if (!req->ptr2)
1369 {
1370 req_destroy (req);
1371 croak ("out of memory during aio_stat statdata allocation");
1372 }
1373
1374 req->flags |= FLAG_PTR2_FREE;
1375 req->sv1 = newSVsv (fh_or_path);
1376
1377 if (SvPOK (fh_or_path))
1378 {
1379 req->type = ix;
1380 req->ptr1 = SvPVbyte_nolen (req->sv1);
1381 }
1382 else
1383 {
1384 req->type = EIO_FSTAT;
1385 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1386 }
1387
1388 EIO_SEND;
1389}
1390
1391void
1392aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1393 PPCODE:
1394{
1395 dREQ;
1396
1397 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1398 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1399 req->sv1 = newSVsv (fh_or_path);
1400
1401 if (SvPOK (fh_or_path))
1402 {
1403 req->type = EIO_UTIME;
1404 req->ptr1 = SvPVbyte_nolen (req->sv1);
1405 }
1406 else
1407 {
1408 req->type = EIO_FUTIME;
1409 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1410 }
1411
1412 EIO_SEND;
1413}
1414
1415void
1416aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1417 PPCODE:
1418{
1419 dREQ;
1420
1421 req->sv1 = newSVsv (fh_or_path);
1422 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1423
1424 if (SvPOK (fh_or_path))
1425 {
1426 req->type = EIO_TRUNCATE;
1427 req->ptr1 = SvPVbyte_nolen (req->sv1);
1428 }
1429 else
1430 {
1431 req->type = EIO_FTRUNCATE;
1432 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1433 }
1434
1435 EIO_SEND;
1436}
1437
1438void
1439aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1440 ALIAS:
1441 aio_chmod = EIO_CHMOD
1442 aio_fchmod = EIO_FCHMOD
1443 aio_mkdir = EIO_MKDIR
1444 PPCODE:
1445{
1446 dREQ;
1447
1448 req->type = type;
1449 req->int2 = mode;
1450 req->sv1 = newSVsv (fh_or_path);
1451
1452 if (ix == EIO_FCHMOD)
1453 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1454 else
1455 req->ptr1 = SvPVbyte_nolen (req->sv1);
1456
1457 EIO_SEND;
1458}
1459
1460void
1461aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1462 PPCODE:
1463{
1464 dREQ;
1465
1466 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1467 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1468 req->sv1 = newSVsv (fh_or_path);
1469
1470 if (SvPOK (fh_or_path))
1471 {
1472 req->type = EIO_CHOWN;
1473 req->ptr1 = SvPVbyte_nolen (req->sv1);
1474 }
1475 else
1476 {
1477 req->type = EIO_FCHOWN;
1478 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1479 }
1480
1481 EIO_SEND;
1482}
1483
1484void
1485aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1486 ALIAS:
1487 aio_unlink = EIO_UNLINK
1488 aio_rmdir = EIO_RMDIR
1489 aio_readdir = EIO_READDIR
1490 PPCODE:
1491{
1492 dREQ;
1493
1494 req->type = ix;
1495 req->sv1 = newSVsv (pathname);
1496 req->ptr1 = SvPVbyte_nolen (req->sv1);
1497
1498 EIO_SEND;
1499}
1500
1501void
1502aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1503 ALIAS:
1504 aio_link = EIO_LINK
1505 aio_symlink = EIO_SYMLINK
1506 aio_rename = EIO_RENAME
1507 PPCODE:
1508{
1509 dREQ;
1510
1511 req->type = ix;
1512 req->sv1 = newSVsv (oldpath);
1513 req->ptr1 = SvPVbyte_nolen (req->sv1);
1514 req->sv2 = newSVsv (newpath);
1515 req->ptr2 = SvPVbyte_nolen (req->sv2);
1516
1517 EIO_SEND;
1518}
1519
1520void
1521aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1522 PPCODE:
1523{
1524 dREQ;
1525
1526 req->type = EIO_MKNOD;
1527 req->sv1 = newSVsv (pathname);
1528 req->ptr1 = SvPVbyte_nolen (req->sv1);
1529 req->int2 = (mode_t)mode;
1530 req->offs = dev;
1531
1532 EIO_SEND;
1533}
1534
1535void
1536aio_busy (double delay, SV *callback=&PL_sv_undef)
1537 PPCODE:
1538{
1539 dREQ;
1540
1541 req->type = EIO_BUSY;
1542 req->nv1 = delay < 0. ? 0. : delay;
1543
1544 EIO_SEND;
1545}
1546
1547void
1548aio_group (SV *callback=&PL_sv_undef)
1549 PROTOTYPE: ;$
1550 PPCODE:
1551{
1552 dREQ;
1553
1554 req->type = EIO_GROUP;
1555
1556 req_send (req);
1557 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1558}
1559
1560void
1561aio_nop (SV *callback=&PL_sv_undef)
1562 ALIAS:
1563 aio_nop = EIO_NOP
1564 aio_sync = EIO_SYNC
1565 PPCODE:
1566{
1567 dREQ;
1568
1569#endif
1570
1571void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) 2410eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
1572{ 2411{
1573 grp->int2 = limit; 2412 grp->int2 = limit;
1574 grp->feed = feed; 2413 grp->feed = feed;
1575 2414
1576 grp_try_feed (grp); 2415 grp_try_feed (grp);
1577} 2416}
1578 2417
2418void
1579void eio_grp_limit (eio_req *grp, int limit) 2419eio_grp_limit (eio_req *grp, int limit)
1580{ 2420{
1581 grp->int2 = limit; 2421 grp->int2 = limit;
1582 2422
1583 grp_try_feed (grp); 2423 grp_try_feed (grp);
1584} 2424}
1585 2425
2426void
1586void eio_grp_add (eio_req *grp, eio_req *req) 2427eio_grp_add (eio_req *grp, eio_req *req)
1587{ 2428{
1588 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); 2429 assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
2430
2431 grp->flags |= ETP_FLAG_GROUPADD;
1589 2432
1590 ++grp->size; 2433 ++grp->size;
1591 req->grp = grp; 2434 req->grp = grp;
1592 2435
1593 req->grp_prev = 0; 2436 req->grp_prev = 0;
… …
1597 grp->grp_first->grp_prev = req; 2440 grp->grp_first->grp_prev = req;
1598 2441
1599 grp->grp_first = req; 2442 grp->grp_first = req;
1600} 2443}
1601 2444
2445/*****************************************************************************/
2446/* misc garbage */
1602 2447
2448eio_ssize_t
2449eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
2450{
2451 return eio__sendfile (ofd, ifd, offset, count);
2452}
2453
2454int eio_mlockall_sync (int flags)
2455{
2456 return eio__mlockall (flags);
2457}
2458

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