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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.275 by root, Mon Mar 18 23:52:09 2019 UTC vs.
Revision 1.296 by root, Mon Sep 5 08:43:58 2022 UTC

… …
18#include <sys/socket.h> 18#include <sys/socket.h>
19#include <sys/stat.h> 19#include <sys/stat.h>
20#include <limits.h> 20#include <limits.h>
21#include <fcntl.h> 21#include <fcntl.h>
22#include <sched.h> 22#include <sched.h>
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37 23
38/* perl namespace pollution */ 24/* perl namespace pollution */
39#undef VERSION 25#undef VERSION
40 26
41/* perl stupidly overrides readdir and maybe others */ 27/* perl stupidly overrides readdir and maybe others */
… …
84 70
85#else 71#else
86 72
87 #include <sys/time.h> 73 #include <sys/time.h>
88 #include <sys/select.h> 74 #include <sys/select.h>
75 #include <sys/wait.h>
89 #include <unistd.h> 76 #include <unistd.h>
90 #include <utime.h> 77 #include <utime.h>
91 #include <signal.h> 78 #include <signal.h>
92 79
93 #define EIO_STRUCT_STAT Stat_t 80 #define EIO_STRUCT_STAT Stat_t
… …
119# include <sys/mman.h> 106# include <sys/mman.h>
120#endif 107#endif
121 108
122#if HAVE_SYS_UIO_H 109#if HAVE_SYS_UIO_H
123# include <sys/uio.h> 110# include <sys/uio.h>
111#endif
112
113/* MUST be included before linux/fs.h, as the latter includes
114 * linux/mount.h, which is incompatible to sys/mount.h
115 */
116#if HAVE_SYS_MOUNT_H
117# include <sys/mount.h>
118#endif
119
120/* the incompetent fool that created musl keeps __linux__, refuses
121 * to implement any linux standard apis, and also has no way to test
122 * for his broken implementation. don't complain to me if this fails
123 * for you.
124 */
125#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
126# include <linux/fs.h> /* MUST be included after sys/mount.h */
127# ifdef FS_IOC_FIEMAP
128# include <linux/types.h>
129# include <linux/fiemap.h>
130# undef HAVE_FIEMAP
131# define HAVE_FIEMAP 1
132# endif
124#endif 133#endif
125 134
126#if HAVE_ST_XTIMENSEC 135#if HAVE_ST_XTIMENSEC
127# define ATIMENSEC PL_statcache.st_atimensec 136# define ATIMENSEC PL_statcache.st_atimensec
128# define MTIMENSEC PL_statcache.st_mtimensec 137# define MTIMENSEC PL_statcache.st_mtimensec
… …
168 #include <sys/time.h> 177 #include <sys/time.h>
169 #include <sys/resource.h> 178 #include <sys/resource.h>
170#endif 179#endif
171 180
172typedef SV SV8; /* byte-sv, used for argument-checking */ 181typedef SV SV8; /* byte-sv, used for argument-checking */
182typedef char *octet_string;
183typedef char *octet_string_ornull;
173typedef int aio_rfd; /* read file desriptor */ 184typedef int aio_rfd; /* read file desriptor */
174typedef int aio_wfd; /* write file descriptor */ 185typedef int aio_wfd; /* write file descriptor */
175 186
176static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash; 187static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
177 188
… …
226 237
227#if PAGESIZE <= 0 238#if PAGESIZE <= 0
228# define PAGESIZE sysconf (_SC_PAGESIZE) 239# define PAGESIZE sysconf (_SC_PAGESIZE)
229#endif 240#endif
230 241
242/* solaris perl seems to declare a wrong syscall function that clashes with system includes */
243#ifdef __sun
244# undef HAVE_SYSCALL
245#endif
246
247#if HAVE_SYSCALL
248#include <sys/syscall.h>
249#else
250# define syscall(nr,...) (errno = ENOSYS, -1)
251#endif
252
231/*****************************************************************************/ 253/*****************************************************************************/
232 254
233#if !_POSIX_MAPPED_FILES 255#if !_POSIX_MAPPED_FILES
234# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1) 256# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
235# define munmap(addr,length) EIO_ENOSYS () 257# define munmap(addr,length) EIO_ENOSYS ()
… …
344 int count = req->int3; 366 int count = req->int3;
345 367
346 req->flags |= EIO_FLAG_PTR1_FREE; 368 req->flags |= EIO_FLAG_PTR1_FREE;
347 369
348 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */ 370 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
349 /* increase in 3.5kb steps */ 371 /* increase in fixed steps */
350 if (count < 0) 372 if (count < 0)
351 count = 8; 373 count = 8;
352 374
353 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count); 375 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
354 errno = ENOMEM; 376 errno = ENOMEM;
… …
407 429
408 for (count = 0; count < incmap->fm_mapped_extents; ++count) 430 for (count = 0; count < incmap->fm_mapped_extents; ++count)
409 { 431 {
410 struct fiemap_extent *e = incmap->fm_extents + count; 432 struct fiemap_extent *e = incmap->fm_extents + count;
411 433
434 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
435
412 if (e->fe_logical + e->fe_length >= end_offset) 436 if (e->fe_logical >= end_offset)
413 goto done; 437 goto done;
414
415 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
416 438
417 if (e->fe_flags & FIEMAP_EXTENT_LAST) 439 if (e->fe_flags & FIEMAP_EXTENT_LAST)
418 goto done; 440 goto done;
419 441
420 } 442 }
… …
1081 return ts->tv_sec + ts->tv_nsec * 1e-9; 1103 return ts->tv_sec + ts->tv_nsec * 1e-9;
1082} 1104}
1083 1105
1084/*****************************************************************************/ 1106/*****************************************************************************/
1085 1107
1108/* extract a ref-to-array of strings into a temporary c style string vector */
1109static char **
1110extract_stringvec (SV *sv, const char *croakmsg)
1111{
1112 if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
1113 croak (croakmsg);
1114
1115 AV *av = (AV *)SvRV (sv);
1116 int i, nelem = av_len (av) + 1;
1117 char **vecp = (char **)SvPVX (sv_2mortal (newSV (sizeof (char *) * (nelem + 1))));
1118
1119 for (i = 0; i < nelem; ++i)
1120 {
1121 SV **e = av_fetch (av, i, 0);
1122
1123 if (e && *e)
1124 vecp[i] = SvPVbyte_nolen (*e);
1125 else
1126 vecp[i] = "";
1127 }
1128
1129 vecp[nelem] = 0;
1130
1131 return vecp;
1132}
1133
1134/*****************************************************************************/
1135
1086XS(boot_IO__AIO) ecb_cold; 1136XS(boot_IO__AIO) ecb_cold;
1087 1137
1088MODULE = IO::AIO PACKAGE = IO::AIO 1138MODULE = IO::AIO PACKAGE = IO::AIO
1089 1139
1090PROTOTYPES: ENABLE 1140PROTOTYPES: ENABLE
… …
1191 const_iv (MAP_NONBLOCK) 1241 const_iv (MAP_NONBLOCK)
1192 const_iv (MAP_GROWSDOWN) 1242 const_iv (MAP_GROWSDOWN)
1193 const_iv (MAP_32BIT) 1243 const_iv (MAP_32BIT)
1194 const_iv (MAP_HUGETLB) 1244 const_iv (MAP_HUGETLB)
1195 const_iv (MAP_STACK) 1245 const_iv (MAP_STACK)
1246 const_iv (MAP_FIXED_NOREPLACE)
1247 const_iv (MAP_SHARED_VALIDATE)
1248 const_iv (MAP_SYNC)
1249 const_iv (MAP_UNINITIALIZED)
1196 1250
1197 const_iv (MREMAP_MAYMOVE) 1251 const_iv (MREMAP_MAYMOVE)
1198 const_iv (MREMAP_FIXED) 1252 const_iv (MREMAP_FIXED)
1199 1253
1200 const_iv (F_DUPFD_CLOEXEC)
1201
1202 const_iv (MSG_CMSG_CLOEXEC) 1254 const_iv (MSG_CMSG_CLOEXEC)
1203 const_iv (SOCK_CLOEXEC) 1255 const_iv (SOCK_CLOEXEC)
1256
1257 const_iv (F_DUPFD_CLOEXEC)
1258
1259 const_iv (F_ADD_SEALS)
1260 const_iv (F_GET_SEALS)
1261 const_iv (F_SEAL_SEAL)
1262 const_iv (F_SEAL_SHRINK)
1263 const_iv (F_SEAL_GROW)
1264 const_iv (F_SEAL_WRITE)
1204 1265
1205 const_iv (F_OFD_GETLK) 1266 const_iv (F_OFD_GETLK)
1206 const_iv (F_OFD_SETLK) 1267 const_iv (F_OFD_SETLK)
1207 const_iv (F_OFD_GETLKW) 1268 const_iv (F_OFD_GETLKW)
1208 1269
… …
1284 const_iv (SPLICE_F_GIFT) 1345 const_iv (SPLICE_F_GIFT)
1285 1346
1286 const_iv (EFD_CLOEXEC) 1347 const_iv (EFD_CLOEXEC)
1287 const_iv (EFD_NONBLOCK) 1348 const_iv (EFD_NONBLOCK)
1288 const_iv (EFD_SEMAPHORE) 1349 const_iv (EFD_SEMAPHORE)
1350
1351 const_iv (MFD_CLOEXEC)
1352 const_iv (MFD_ALLOW_SEALING)
1353 const_iv (MFD_HUGETLB)
1354 const_iv (MFD_HUGETLB_2MB)
1355 const_iv (MFD_HUGETLB_1GB)
1289 1356
1290 const_iv (CLOCK_REALTIME) 1357 const_iv (CLOCK_REALTIME)
1291 const_iv (CLOCK_MONOTONIC) 1358 const_iv (CLOCK_MONOTONIC)
1292 const_iv (CLOCK_BOOTTIME) 1359 const_iv (CLOCK_BOOTTIME)
1293 const_iv (CLOCK_REALTIME_ALARM) 1360 const_iv (CLOCK_REALTIME_ALARM)
… …
1318 const_iv (STATX_ATTR_APPEND) 1385 const_iv (STATX_ATTR_APPEND)
1319 const_iv (STATX_ATTR_NODUMP) 1386 const_iv (STATX_ATTR_NODUMP)
1320 const_iv (STATX_ATTR_ENCRYPTED) 1387 const_iv (STATX_ATTR_ENCRYPTED)
1321 const_iv (STATX_ATTR_AUTOMOUNT) 1388 const_iv (STATX_ATTR_AUTOMOUNT)
1322 1389
1390 const_iv (AT_FDCWD)
1391 const_iv (AT_SYMLINK_NOFOLLOW)
1392 const_iv (AT_EACCESS)
1393 const_iv (AT_REMOVEDIR)
1394 const_iv (AT_SYMLINK_FOLLOW)
1395 const_iv (AT_NO_AUTOMOUNT)
1396 const_iv (AT_EMPTY_PATH)
1397 const_iv (AT_STATX_SYNC_TYPE)
1398 const_iv (AT_STATX_AS_STAT)
1399 const_iv (AT_STATX_FORCE_SYNC)
1400 const_iv (AT_STATX_DONT_SYNC)
1401 const_iv (AT_RECURSIVE)
1402
1403 const_iv (OPEN_TREE_CLONE)
1404
1405 const_iv (FSOPEN_CLOEXEC)
1406
1407 const_iv (FSPICK_CLOEXEC)
1408 const_iv (FSPICK_SYMLINK_NOFOLLOW)
1409 const_iv (FSPICK_NO_AUTOMOUNT)
1410 const_iv (FSPICK_EMPTY_PATH)
1411
1412 const_iv (MOVE_MOUNT_F_SYMLINKS)
1413 const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
1414 const_iv (MOVE_MOUNT_F_EMPTY_PATH)
1415 const_iv (MOVE_MOUNT_T_SYMLINKS)
1416 const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
1417 const_iv (MOVE_MOUNT_T_EMPTY_PATH)
1418
1419 /* waitid */
1420 const_iv (P_PID)
1421 const_iv (P_PIDFD)
1422 const_iv (P_PGID)
1423 const_iv (P_ALL)
1424
1425 const_iv (FSCONFIG_SET_FLAG)
1426 const_iv (FSCONFIG_SET_STRING)
1427 const_iv (FSCONFIG_SET_BINARY)
1428 const_iv (FSCONFIG_SET_PATH)
1429 const_iv (FSCONFIG_SET_PATH_EMPTY)
1430 const_iv (FSCONFIG_SET_FD)
1431 const_iv (FSCONFIG_CMD_CREATE)
1432 const_iv (FSCONFIG_CMD_RECONFIGURE)
1433
1434 const_iv (MOUNT_ATTR_RDONLY)
1435 const_iv (MOUNT_ATTR_NOSUID)
1436 const_iv (MOUNT_ATTR_NODEV)
1437 const_iv (MOUNT_ATTR_NOEXEC)
1438 const_iv (MOUNT_ATTR__ATIME)
1439 const_iv (MOUNT_ATTR_RELATIME)
1440 const_iv (MOUNT_ATTR_NOATIME)
1441 const_iv (MOUNT_ATTR_STRICTATIME)
1442 const_iv (MOUNT_ATTR_NODIRATIME)
1443
1444 /* sys/mount.h */
1445 const_iv (MS_RDONLY)
1446 const_iv (MS_NOSUID)
1447 const_iv (MS_NODEV)
1448 const_iv (MS_NOEXEC)
1449 const_iv (MS_SYNCHRONOUS)
1450 const_iv (MS_REMOUNT)
1451 const_iv (MS_MANDLOCK)
1452 const_iv (MS_DIRSYNC)
1453 const_iv (MS_NOATIME)
1454 const_iv (MS_NODIRATIME)
1455 const_iv (MS_BIND)
1456 const_iv (MS_MOVE)
1457 const_iv (MS_REC)
1458 const_iv (MS_SILENT)
1459 const_iv (MS_POSIXACL)
1460 const_iv (MS_UNBINDABLE)
1461 const_iv (MS_PRIVATE)
1462 const_iv (MS_SLAVE)
1463 const_iv (MS_SHARED)
1464 const_iv (MS_RELATIME)
1465 const_iv (MS_KERNMOUNT)
1466 const_iv (MS_I_VERSION)
1467 const_iv (MS_STRICTATIME)
1468 const_iv (MS_LAZYTIME)
1469 const_iv (MS_ACTIVE)
1470 const_iv (MS_NOUSER)
1471 const_iv (MS_RMT_MASK)
1472 const_iv (MS_MGC_VAL)
1473 const_iv (MS_MGC_MSK)
1474
1475 const_iv (MNT_FORCE)
1476 const_iv (MNT_DETACH)
1477 const_iv (MNT_EXPIRE)
1478 const_iv (UMOUNT_NOFOLLOW)
1479
1480 const_iv (BLKROSET)
1481 const_iv (BLKROGET)
1482 const_iv (BLKRRPART)
1483 const_iv (BLKGETSIZE)
1484 const_iv (BLKFLSBUF)
1485 const_iv (BLKRASET)
1486 const_iv (BLKRAGET)
1487 const_iv (BLKFRASET)
1488 const_iv (BLKFRAGET)
1489 const_iv (BLKSECTSET)
1490 const_iv (BLKSECTGET)
1491 const_iv (BLKSSZGET)
1492 const_iv (BLKBSZGET)
1493 const_iv (BLKBSZSET)
1494 const_iv (BLKGETSIZE64)
1495
1323 /* these are libeio constants, and are independent of gendef0 */ 1496 /* these are libeio constants, and are independent of gendef0 */
1324 const_eio (SEEK_SET) 1497 const_eio (SEEK_SET)
1325 const_eio (SEEK_CUR) 1498 const_eio (SEEK_CUR)
1326 const_eio (SEEK_END) 1499 const_eio (SEEK_END)
1327 1500
… …
2484 RETVAL = 0; 2657 RETVAL = 0;
2485#endif 2658#endif
2486 OUTPUT: 2659 OUTPUT:
2487 RETVAL 2660 RETVAL
2488 2661
2489int 2662void
2663accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
2664 PPCODE:
2665{
2666 SV *retval;
2667#if HAVE_ACCEPT4
2668 socklen_t salen_ = salen ? salen + 1 : 0;
2669
2670 if (salen)
2671 {
2672 sv_upgrade (sockaddr, SVt_PV);
2673 sv_grow (sockaddr, salen_);
2674 }
2675
2676 int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
2677
2678 retval = newmortalFH (res, O_RDWR);
2679
2680 if (res >= 0 && salen > 0)
2681 {
2682 if (salen_ > salen + 1)
2683 salen_ = salen + 1;
2684
2685 SvPOK_only (sockaddr);
2686 SvCUR_set (sockaddr, salen_);
2687 }
2688#else
2689 errno = ENOSYS;
2690 retval = &PL_sv_undef;
2691#endif
2692 XPUSHs (retval);
2693}
2694
2695ssize_t
2490splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags) 2696splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2491 CODE: 2697 CODE:
2492{ 2698{
2493#if HAVE_LINUX_SPLICE 2699#if HAVE_LINUX_SPLICE
2494 loff_t off_in_, off_out_; 2700 loff_t off_in_, off_out_;
… …
2502#endif 2708#endif
2503} 2709}
2504 OUTPUT: 2710 OUTPUT:
2505 RETVAL 2711 RETVAL
2506 2712
2507int 2713ssize_t
2508tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags) 2714tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2509 CODE: 2715 CODE:
2510#if HAVE_LINUX_SPLICE 2716#if HAVE_LINUX_SPLICE
2511 RETVAL = tee (rfh, wfh, length, flags); 2717 RETVAL = tee (rfh, wfh, length, flags);
2512#else 2718#else
… …
2555 PUSHs (newmortalFH (fd[1], O_WRONLY)); 2761 PUSHs (newmortalFH (fd[1], O_WRONLY));
2556 } 2762 }
2557} 2763}
2558 2764
2559void 2765void
2766pidfd_open (int pid, unsigned int flags = 0)
2767 PPCODE:
2768{
2769 /*GENDEF0_SYSCALL(pidfd_open,434)*/
2770 int fd = syscall (SYS_pidfd_open, pid, flags);
2771 XPUSHs (newmortalFH (fd, O_RDWR));
2772}
2773
2774int
2775pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
2776 PPCODE:
2777{
2778 int res;
2779#if HAVE_SIGINFO_T
2780 siginfo_t si = { 0 };
2781
2782 if (SvOK (siginfo))
2783 {
2784 HV *hv;
2785 SV **svp;
2786
2787 if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
2788 croak ("siginfo argument must be a hashref with 'code', 'pid', 'uid' and 'value_int' or 'value_ptr' members, caught");
2789
2790 hv = (HV *)SvRV (siginfo);
2791
2792 if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
2793 if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
2794 if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
2795 if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
2796 if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
2797 }
2798
2799 /*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
2800 res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
2801#else
2802 res = (errno = ENOSYS, -1);
2803#endif
2804
2805 XPUSHs (sv_2mortal (newSViv (res)));
2806}
2807
2808void
2809pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
2810 PPCODE:
2811{
2812 /*GENDEF0_SYSCALL(pidfd_getfd,438)*/
2813 int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
2814 XPUSHs (newmortalFH (fd, O_RDWR));
2815}
2816
2817void
2560eventfd (unsigned int initval = 0, int flags = 0) 2818eventfd (unsigned int initval = 0, int flags = 0)
2561 PPCODE: 2819 PPCODE:
2562{ 2820{
2563 int fd; 2821 int fd;
2564#if HAVE_EVENTFD 2822#if HAVE_EVENTFD
… …
2627#else 2885#else
2628 errno = ENOSYS; 2886 errno = ENOSYS;
2629#endif 2887#endif
2630} 2888}
2631 2889
2890void
2891memfd_create (octet_string pathname, int flags = 0)
2892 PPCODE:
2893{
2894 int fd;
2895#if HAVE_MEMFD_CREATE
2896 fd = memfd_create (pathname, flags);
2897#else
2898 fd = (errno = ENOSYS, -1);
2899#endif
2900
2901 XPUSHs (newmortalFH (fd, O_RDWR));
2902}
2903
2904int
2905fexecve (SV *fh, SV *args, SV *envs = &PL_sv_undef)
2906 CODE:
2907{
2908 int fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
2909 char **envp, **argv;
2910 argv = extract_stringvec (args, "IO::AIO::fexecve: args must be an array of strings");
2911 if (!SvOK (envs))
2912 {
2913 extern char **environ;
2914 envp = environ;
2915 }
2916 else
2917 envp = extract_stringvec (envs, "IO::AIO::fexecve: envs must be an array of strings");
2918#if _POSIX_VERSION >= 200809L
2919 RETVAL = fexecve (fd, argv, envp);
2920#else
2921 RETVAL = (errno = ENOSYS, -1);
2922#endif
2923}
2924 OUTPUT: RETVAL
2925
2926int
2927mount (octet_string special, octet_string path, octet_string fstype, UV flags = 0, octet_string_ornull data = 0)
2928 OUTPUT: RETVAL
2929
2930int
2931umount (octet_string path, int flags = 0)
2932 CODE:
2933 if (flags)
2934#if HAVE_UMOUNT2
2935 RETVAL = umount2 (path, flags);
2936#else
2937 RETVAL = (errno = ENOSYS, -1);
2938#endif
2939 else
2940 RETVAL = umount (path);
2941 OUTPUT: RETVAL
2942
2632UV 2943UV
2633get_fdlimit () 2944get_fdlimit ()
2634 CODE: 2945 CODE:
2635#if HAVE_RLIMITS 2946#if HAVE_RLIMITS
2636 struct rlimit rl; 2947 struct rlimit rl;
… …
2669 if (0 == setrlimit (RLIMIT_NOFILE, &rl)) 2980 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2670 XSRETURN_YES; 2981 XSRETURN_YES;
2671 2982
2672 if (errno == EPERM) 2983 if (errno == EPERM)
2673 { 2984 {
2674 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */ 2985 /* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2675 /* our limit overflows a system-wide limit */ 2986 /* our limit overflows a system-wide limit */
2676 /* try an adaptive algorithm, but do not lower the hardlimit */ 2987 /* try an adaptive algorithm, but do not lower the hardlimit */
2677 rl.rlim_max = 0; 2988 rl.rlim_max = 0;
2678 for (bit = 0x40000000U; bit; bit >>= 1) 2989 for (bit = 0x40000000U; bit; bit >>= 1)
2679 { 2990 {
2680 rl.rlim_max |= bit; 2991 rl.rlim_max |= bit;
2681 rl.rlim_cur = rl.rlim_max; 2992 rl.rlim_cur = rl.rlim_max;
2682 2993
2683 /* nevr decrease the hard limit */ 2994 /* never decrease the hard limit */
2684 if (rl.rlim_max < orig_rlim_max) 2995 if (rl.rlim_max < orig_rlim_max)
2685 break; 2996 break;
2686 2997
2687 if (0 != setrlimit (RLIMIT_NOFILE, &rl)) 2998 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2688 rl.rlim_max &= ~bit; /* too high, remove bit again */ 2999 rl.rlim_max &= ~bit; /* too high, remove bit again */

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