1POSIX::2008(3) User Contributed Perl Documentation POSIX::2008(3)
2
6 POSIX::2008 - Perl interface to POSIX.1-2008
7
9 use Fcntl;
10 use POSIX::2008 qw(openat pwrite);
11 sysopen my $dh, '/tmp', O_RDONLY|O_DIRECTORY|O_NOFOLLOW or die 'Dafuq?';
13 my $fh = openat($dh, 'foobar', O_RDWR|O_CREAT);
14 pwrite($fh, 'fuckyounsa', 10, 0);
15
17 POSIX::2008 contains many of the interfaces specified by POSIX.1-2008
18 <http://pubs.opengroup.org/onlinepubs/9699919799/> that the core POSIX
19 module withholds, implements in Perl or fucked up.
20 This module is provided "as is" unless someone volunteers to maintain
22 it.
23
25 Since version 0.13, the parameter order of pread/pwrite is (count,
26 offset) as with the actual system calls instead of (offset, count).
27 Good luck.
28
30 Since version 0.05, all I/O functions that take numeric file
31 descriptors also accept Perl file or directory handles. "openat()" even
32 returns a handle if you passed it one.
33
35 A system call return value of -1 meaning "error" is mapped to undef.
36 A system call return value of 0 meaning "success" is mapped to "0 but
38 true".
39 For system calls where 0 does not just mean "success", 0 is returned
41 unchanged. These are "open()", "read()", "write()", "readv()",
42 "writev()", "pread()", "pwrite()", "preadv()", "pwritev()". "openat()"
43 gets a special treatment in this module, see below.
44
46 a64l
47 l = a64l(s);
48 abort
50 abort();
51 abs ui = abs(i);
53 access
55 ret = access(path, mode);
56 acos
58 y = acos(x);
59 acosh
61 y = acosh(x);
62 alarm
64 remaining_sec = alarm(sec);
65 asin
67 y = asin(x);
68 asinh
70 y = asinh(x);
71 atan2
73 z = atan2(y, x);
74 atan
76 y = atan(x);
77 atanh
79 y = atanh(x);
80 atof
82 f = atof(s);
83 atoi
85 i = atoi(s);
86 atol
88 l = atol(s);
89 basename
91 s = basename(path);
92 cabs
94 r = cabs(re, im);
95 cacos
97 (re, im) = cacos(re, im);
98 cacosh
100 (re, im) = cacosh(re, im);
101 carg
103 phi = carg(re, im);
104 casinh
106 (re, im) = casinh(re, im);
107 catan
109 (re, im) = catan(re, im);
110 catanh
112 (re, im) = catanh(re, im);
113 catclose
115 ret = catclose(catd);
116 catgets
118 s = catgets(catd, set_id, msg_id, dflt_string);
119 catopen
121 catd = catopen(name, oflag);
122 cbrt
124 y = cbrt(x);
125 ccos
127 (re, im) = ccos(re, im);
128 ccosh
130 (re, im) = ccosh(re, im);
131 ceil
133 y = ceil(x);
134 cexp
136 (re, im) = cexp(re, im);
137 chdir
139 ret = chdir(path);
140 chmod
142 ret = chmod(path, mode);
143 chown
145 ret = chown(path, uid, gid);
146 cimag
148 im = cimag(re, im);
149 clock
151 t = clock()
152 clock_getcpuclockid
154 clock_id = clock_getcpuclockid(pid);
155 pid defaults to $$. Returns undef on error.
157 clock_getres
159 (sec, nsec) = clock_getres(clock_id);
160 clock_id defaults to CLOCK_REALTIME. Returns empty list on error.
162 clock_gettime
164 (sec, nsec) = clock_gettime(clock_id);
165 clock_id defaults to CLOCK_REALTIME. Returns empty list on error.
167 clock_nanosleep
169 (rem_sec, rem_nsec) = clock_nanosleep(clock_id, flags, sec, nsec);
170 In scalar context returns the remaining seconds as a floating point
172 number.
173 clock_settime
175 ret = clock_settime(clock_id, sec, nsec);
176 clog
178 (re, im) = clog(re, im);
179 close
181 ret = close(fd);
182 confstr
184 s = confstr(name);
185 name is one of the _CS_ integer constants.
187 conj
189 (re, im) = conj(re, im);
190 copysign
192 xs = copysign(x, y);
193 cos y = cos(x);
195 cosh
197 y = cosh(x);
198 cpow
200 (re, im) = cpow(re_x, im_x, re_y, im_y);
201 cproj
203 (re, im) = cproj(re, im);
204 creal
206 re = creal(re, im);
207 csin
209 (re, im) = csin(re, im);
210 csinh
212 (re, im) = csinh(re, im);
213 csqrt
215 (re, im) = csqrt(re, im);
216 ctan
218 (re, im) = ctan(re, im);
219 ctanh
221 (re, im) = ctanh(re, im);
222 dirname
224 name = dirname(path);
225 div (quot, rem) = div(numer, denom);
227 dlclose
229 dlclose(dlhandle);
230 dlerror
232 dlerror();
233 dlopen
235 dlhandle = dlopen(file, mode);
236 dlsym
238 addr = dlsym(dlhandle, name);
239 drand48
241 r = drand48();
242 endutxent
244 endutxent();
245 erand48
247 (r, X0, X1, X2) = erand48(X0, X1, X2);
248 erf y = erf(x);
250 erfc
252 y = erfc(x);
253 exp2
255 y = exp2(x);
256 expm1
258 y = expm1(x);
259 faccessat
261 ret = faccessat(dirfd, path, amode, flags=0);
262 flags is the bitwise OR of zero or more of AT_EACCESS,
264 AT_SYMLINK_NOFOLLOW.
265 fchdir
267 ret = fchdir(dirfd);
268 fchmod
270 ret = fchmod(fd, mode);
271 fchmodat
273 ret = fchmodat(dirfd, path, mode, flags=0);
274 flags can be 0 or AT_SYMLINK_NOFOLLOW.
276 fchown
278 ret = fchown(fd, uid, gid);
279 fchownat
281 ret = fchownat(dirfd, path, uid, gid, flags=0);
282 flags can be 0 or AT_SYMLINK_NOFOLLOW.
284 fdatasync
286 ret = fdatasync(fd);
287 fdopen
289 ret = fdopen(fd, mode)
290 Returns a file handle associated with the file descriptor fd or
292 undef on error. mode is one of the values "r", "w", "a" with an
293 optional "+" and/or "b".
294 It's similar to "IO::Handle::new_from_fd()" with the following
296 improvements:
297 • It really calls fdopen(3).
299 • It expects POSIX mode strings (e.g. "r", not "<").
301 • It fails mode is not compatible with the flags of fd.
303 fdopendir
305 ret = fdopendir(fd)
306 Returns a directory handle associated with the file descriptor fd
308 or undef on error. Usage example:
309 my $dh = do {
311 sysopen my $fh, '/tmp', O_RDONLY|O_DIRECTORY|O_NOFOLLOW;
312 fdopendir($fh); # or fdopendir(fileno $fh) but the former also works
313 # with handles from opendir() for which fileno does
314 # not work before Perl 5.22
315 };
316 my @files = readdir $dh; # this would fail with $fh from sysopen
317 fdim
319 d = fdim(double x, double y);
320 fegetround
322 round = fegetround();
323 fesetround
325 ret = fesetround(round);
326 ffs pos = ffs(i);
328 floor
330 y = floor(x);
331 fma r = fma(x, y, z);
333 fmax
335 m = fmax(x, y);
336 fmin
338 m = fmin(x, y);
339 fmod
341 m = fmod(x, y);
342 fnmatch
344 ret = fnmatch(pattern, string, flags);
345 Returns 0 if string matches pattern, FNM_NOMATCH if there is no
347 match, undef if there is an error.
348 flags is the bitwise OR of zero or more of FNM_NOESCAPE,
350 FNM_PATHNAME, FNM_PERIOD, FNM_FILE_NAME, FNM_LEADING_DIR,
351 FNM_CASEFOLD.
352 fpclassify
354 fpclassify(x);
355 Returns one of FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL,
357 FP_NORMAL.
358 fstatat
360 (dev, ino, mode, nlink, uid, gid, rdev, size, atim_sec, mtim_sec,
361 ctim_sec, blksize, blocks, atim_nsec, mtim_nsec, ctim_nsec) =
362 fstatat(dirfd, path, flags = 0);
363 flags is the bitwise OR of zero or more of AT_SYMLINK_NOFOLLOW,
365 AT_NO_AUTOMOUNT.
366 fsync
368 ret = fsync(fd);
369 ftruncate
371 ret = ftruncate(fd, length);
372 futimens
374 ret = futimens(fd, atime_sec, atime_nsec, mtime_sec, mtime_nsec);
375 atime_sec and mtime_sec default to 0, atime_nsec and mtime_nsec
377 default to UTIME_NOW.
378 getdate
380 (sec, min, hour, mday, mon, year, wday, yday, isdst) =
381 getdate(string);
382 getdate_err
384 getdate_err() returns the value of the getdate_err variable.
385 getegid
387 egid = getegid();
388 geteuid
390 euid = geteuid();
391 getgid
393 gid = getgid();
394 gethostid
396 hostid = gethostid();
397 gethostname
399 hostname = gethostname();
400 getitimer
402 (int_sec, int_usec, val_sec, val_usec) = getitimer(which);
403 which is one of ITIMER_REAL, ITIMER_VIRTUAL, ITIMER_PROF.
405 getpriority
407 prio = getpriority(which, who);
408 which can be one of PRIO_PROCESS, PRIO_PGRP, PRIO_USER, defaults to
410 PRIO_PROCESS.
411 who defaults to 0.
413 Returns undef on error.
415 getsid
417 sid = getsid(pid);
418 pid defaults to 0.
420 getuid
422 uid = getuid();
423 getutxent
425 (user, id, line, pid, type, sec, usec) = getutxent();
426 getutxent() reads a line from the current file position in the utmp
428 file.
429 getutxid
431 (user, id, line, pid, type, sec, usec) = getutxid(ut_type, ut_id);
432 getutxid() searches forward from the current file position in the
434 utmp file based upon ut_type and ut_id. If ut_type is one of
435 RUN_LVL, BOOT_TIME, NEW_TIME, or OLD_TIME, getutxid() will find the
436 first entry whose ut_type field matches ut_type. If ut_type is one
437 of INIT_PROCESS, LOGIN_PROCESS, USER_PROCESS, or DEAD_PROCESS,
438 getutxid() will find the first entry whose ut_id field matches
439 ut_id.
440 getutxline
442 (user, id, line, pid, type, sec, usec) = getutxline(ut_line);
443 getutxline() searches forward from the current file position in the
445 utmp file. It scans entries whose ut_type is USER_PROCESS or
446 LOGIN_PROCESS and returns the first one whose ut_line field matches
447 ut_line.
448 hypot
450 r = hypot(x, y);
451 ilogb
453 y = ilogb(x);
454 isalpha
456 Like POSIX::isalpha() but returns 0 for the empty string.
457 isatty
459 ret = isatty(fd)
460 isblank
462 ret = isblank(charstring)
463 Returns 1 if charstring consists only of blank characters (i.e.
465 spaces and/or tabs). Returns 0 otherwise (also for the empty
466 string).
467 iscntrl
469 Like POSIX::iscntrl() but returns 0 for the empty string.
470 isdigit
472 Like POSIX::isdigit() but returns 0 for the empty string.
473 isfinite
475 isfinite(x);
476 isgraph
478 Like POSIX::isgraph() but returns 0 for the empty string.
479 isinf
481 isinf(x);
482 islower
484 Like POSIX::islower() but returns 0 for the empty string.
485 isnan
487 isnan(x);
488 isnormal
490 isnormal(x);
491 isprint
493 Like POSIX::isprint() but returns 0 for the empty string.
494 ispunct
496 Like POSIX::ispunct() but returns 0 for the empty string.
497 isspace
499 Like POSIX::isspace() but returns 0 for the empty string.
500 isupper
502 Like POSIX::isupper() but returns 0 for the empty string.
503 isxdigit
505 Like POSIX::isxdigit() but returns 0 for the empty string.
506 j0 y = j0(x);
508 j0() is the Bessel function of the first kind of order 0.
510 j1 y = j1(x);
512 j1() is the Bessel function of the first kind of order 1.
514 jn y = jn(n, x);
516 jn() is the Bessel function of the first kind of order n.
518 jrand48
520 (r, X0, X1, X2) = jrand48(X0, X1, X2);
521 killpg
523 ret = killpg(pgrp, sig);
524 l64a
526 s = l64a(n);
527 lchown
529 ret = lchown(path, uid, gid)
530 ldexp
532 y = ldexp(x, exp);
533 ldiv
535 (quot, rem) = ldiv(numer, denom);
536 lgamma
538 y = lgamma(x);
539 link
541 ret = link(path1, path2);
542 linkat
544 ret = linkat(fd1, path1, fd2, path2, flags=0);
545 flags can be 0 or AT_SYMLINK_FOLLOW.
547 log1p
549 y = log1p(x);
550 log2
552 y = log2(x);
553 logb
555 y = logb(x);
556 lrand48
558 r = lrand48();
559 lround
561 l = lround(x)
562 lstat
564 ret = lstat(path);
565 mkdir
567 ret = mkdir(path, mode);
568 mkdirat
570 ret = mkdirat(fd, path, mode);
571 mkdtemp
573 name = mkdtemp(template);
574 mkfifo
576 ret = mkfifo(path, mode);
577 mkfifoat
579 ret = mkfifoat(fd, path, mode);
580 mknod
582 ret = mknod(path, mode, dev);
583 mknodat
585 ret = mknodat(fd, path, mode, dev);
586 mkstemp
588 (fd, name) = mkstemp(template);
589 mrand48
591 mrand48();
592 nanosleep
594 (rem_sec, rem_nsec) = nanosleep(sec, nsec);
595 In scalar context returns the remaining seconds as a floating point
597 number.
598 nearbyint
600 y = nearbyint(x);
601 nextafter
603 z = nextafter(x, y);
604 nrand48
606 r = nrand48()
607 open
609 ret = open(path, oflag[, mode]);
610 oflag defaults to O_RDONLY, mode defaults to 0600.
612 openat
614 ret = openat(fd, path, oflag[, mode]);
615 oflag defaults to O_RDONLY, mode defaults to 0600.
617 If fd is numeric (i.e. a file descriptor), "openat()" returns a
619 file descriptor. If fd is a file or directory handle the return
620 value is also a handle whose type depends on the file type of path:
621 If path is a directory, the return value is a directory handle,
622 otherwise it's a file handle.
623 Returns undef on error.
625 posix_fadvise
627 ret = posix_fadvise(fd, offset, len, advice);
628 advice is one of the "POSIX_FADV_" constants.
630 Returns undef on error
632 posix_fallocate
634 ret = posix_fallocate(fd, offset, len);
635 pread
637 bytes_read = pread(fd, buf, count, [offset, buf_offset]);
638 "pread()" reads count bytes (not characters) of data from the file
640 descriptor fd at file offset offset into the scalar buf without
641 changing the file offset. buf will be enlarged automatically if
642 necessary.
643 offset and buf_offset are set to 0 if omitted or undef.
645 "pread()" treats buf just like "sysread()" does: buf_offset may be
647 specified to place the read data at that position in buf. If
648 buf_offset is past the end of buf, buf will be padded with zeros
649 before appending the data. If buf_offset is negative, it is counted
650 from the end of the string. buf will be grown or shrunk so that the
651 last byte actually read is the last byte of buf after the read.
652 Returns the number of bytes read, 0 at EOF, undef on error.
654 preadv
656 bytes_read = preadv(fd, buffers, sizes, [offset])
657 "preadv()" behaves like "readv()" but adds an optional offset
659 argument, which specifies the file position at which the data is to
660 be read. offset is set to 0 if omitted or undef.
661 The file offset is not changed by this system call. The file
663 referred to by fd must be capable of seeking.
664 ptsname
666 name = ptsname(fd);
667 pwrite
669 bytes_written = pwrite(fd, buf, [count, offset, buf_offset]);
670 pwrite() writes count bytes of data from the scalar buf to the file
672 descriptor fd at file offset offset without changing the file
673 offset. The file referenced by fd must be capable of seeking.
674 If count is omitted or undef, everything from buf_offset up to the
676 end of buf is written.
677 buf_offset may be specified to write data from that position in
679 buf. If buf_offset is negative it is counted from the end of the
680 string.
681 offset and buf_offset are set to 0 if omitted or undef.
683 Returns the number of bytes written, undef on error.
685 On Linux, if a file is opened with O_APPEND, pwrite() appends data
687 to the end of the file, regardless of the value of offset (in
688 violation of POSIX).
689 pwritev
691 bytes_written = pwritev(fd, buffers, [offset])
692 "pwritev()" behaves like "writev()" but adds an optional offset
694 argument, which specifies the file position at which the data is to
695 be written. offset is set to 0 if omitted or undef.
696 The file offset is not changed by this system call. The file
698 referred to by fd must be capable of seeking.
699 random
701 r = random();
702 read
704 bytes_read = read(fd, buf, count);
705 Like POSIX::read() but returns 0 at EOF instead of "0 but true".
707 readv
709 bytes_read = readv(fd, buffers, sizes);
710 Example:
712 sysopen my $fh, '/tmp/foobar', O_RDWR|O_CREAT|O_TRUNC;
714 pwrite($fh, 'foobar', 6, 0);
715 readv($fh, my @buf, [4, 0, 4, 4]);
716 # -> @buf is ('foob', '', 'ar')
717 "readv()" reads from the file descriptor fd into buffers as many
719 strings as there are elements in sizes. buffers must be a variable
720 holding an array or an array reference. sizes must be an array
721 reference.
722 sizes is expected to hold unsigned integers that specify how many
724 bytes are to be read into each buffer. A byte count of 0 or undef
725 creates an empty string. sizes is processed in array order.
726 buffers will be extended if necessary, but it will never be shrunk.
728 If buffers is not empty, any existing elements are replaced as long
729 as sufficient data was read from fd.
730 If the total byte count of sizes exceeds the number of bytes
732 actually read from fd, there may be one partly filled buffer and
733 the rest of sizes is skipped, so you may end up with less strings
734 in buffers than there are elements in sizes.
735 "readv()" returns the number of bytes read (which may be less than
737 the total bytes in sizes) or undef on error.
738 readlink
740 name = readlink(path);
741 Returns undef on error.
743 readlinkat
745 name = readlinkat(dirfd, path);
746 Returns undef on error.
748 remainder
750 r = remainder(x, y);
751 remove
753 ret = remove(path);
754 Calls the actual C library function "remove()".
756 Note that POSIX::remove() fails if path is a symlink to a directory
758 because someone "couldn't read the plans right and did a piss-poor
759 job of putting it together" as "(-d $_[0]) ? CORE::rmdir($_[0]) :
760 CORE::unlink($_[0])". Quote from Armageddon.
761 rename
763 ret = rename(old, new);
764 renameat
766 ret = renameat(olddirfd, oldpath, newdirfd, newpath);
767 round
769 r = round(x);
770 scalbn
772 y = scalbn(x, n);
773 seed48
775 (old_seed1, old_seed2, old_seed3) = seed48(seed1, seed2, seed3);
776 setegid
778 ret = setegid(gid);
779 seteuid
781 ret = seteuid(uid);
782 setgid
784 ret = setgid(gid);
785 setitimer
787 (old_int_sec, old_int_usec, old_val_sec, old_val_usec) =
788 setitimer(which, int_sec, int_usec, val_sec, val_usec);
789 which is one of ITIMER_REAL, ITIMER_VIRTUAL, ITIMER_PROF.
791 setpriority
793 ret = setpriority(value, which, who);
794 which can be one of PRIO_PROCESS, PRIO_PGRP, PRIO_USER, defaults to
796 PRIO_PROCESS.
797 Returns true on success, undef on error.
799 who defaults to 0.
801 setregid
803 ret = setregid(rgid, egid);
804 setreuid
806 ret = setreuid(ruid, euid);
807 setuid
809 ret = setuid(uid);
810 setutxent
812 setutxent();
813 sighold
815 ret = sighold(sig);
816 sigignore
818 ret = sigignore(sig);
819 signbit
821 b = signbit(x);
822 sigpause
824 sigpause(sig);
825 sigrelse
827 ret = sigrelse(sig);
828 sinh
830 y = sinh(x);
831 srand48
833 srand48(seedval);
834 srandom
836 srandom(seed);
837 stat
839 (dev, ino, mode, nlink, uid, gid, rdev, size, atim_sec, mtim_sec,
840 ctim_sec, blksize, blocks, atim_nsec, mtim_nsec, ctim_nsec) =
841 stat(path);
842 strptime
844 (sec, min, hour, mday, mon, year, wday, yday, isdst) = strptime(s,
845 format[, sec, min, hour, mday, mon, year, wday, yday, isdst]);
846 strptime() converts the string s into a broken-down time according
848 to the format string format. The time fields may optionally be
849 initialized in whole or in part and will be returned as initialized
850 if they are not affected by the format string. Unprocessed
851 uninitialized or undef fields are returned as undef.
852 Returns an empty list on error.
854 In scalar context returns the index of the first byte in s that was
856 not processed or the byte length of s if the whole string was
857 consumed or undef on error.
858 As strptime() acts on null-terminated strings, strings containing
860 NUL bytes will only be processed up to the first NUL byte.
861 symlink
863 symlink(old, new);
864 symlinkat
866 ret = symlinkat(old, dirfd, new);
867 sync
869 sync();
870 tan y = tan(x);
872 tanh
874 y = tanh(x);
875 tgamma
877 y = tgamma(x);
878 timer_create
880 timerid = timer_create(clockid, signal);
881 Returns undef on error.
883 timer_delete
885 timer_delete(timerid);
886 Returns '0 but true' on success, undef on error.
888 timer_getoverrun
890 count = timer_getoverrun(timerid);
891 Returns undef on error.
893 timer_gettime
895 (interval_sec, interval_nsec, initial_sec, initial_nsec) =
896 timer_gettime(timerid);
897 Returns an empty list on error.
899 timer_settime
901 (old_int_sec, old_int_nsec, old_init_sec, old_init_nsec) =
902 timer_settime(timerid, flags, int_sec, int_nsec, [init_sec,
903 init_nsec]);
904 flags may be 0 or "TIMER_ABSTIME". If the init values are omitted,
906 they are set to the int values.
907 truncate
909 ret = truncate(path, length);
910 trunc
912 y = trunc(x);
913 unlinkat
915 ret = unlinkat(dirfd, path, flags=0);
916 flags can be 0 or AT_REMOVEDIR.
918 unlink
920 ret = unlink(path);
921 utimensat
923 ret = utimensat(dirfd, path, flags, atime_sec, atime_nsec,
924 mtime_sec, mtime_nsec);
925 flags can be 0 or AT_SYMLINK_NOFOLLOW, defaults to 0.
927 atime_sec and mtime_sec default to 0. atime_nsec and mtime_nsec
929 default to UTIME_NOW.
930 write
932 bytes_written = write(fd, buf[, count]);
933 Like POSIX::write() but returns 0 instead of "0 but true" if 0
935 bytes were written, and it does not write more bytes than buf
936 contains.
937 If count is omitted or undef, it defaults to the length of buf.
939 writev
941 bytes_written = writev(fd, buffers);
942 writev() writes multiple buffers from buffers to the file
944 associated with the file descriptor fd. buffers must be an array
945 reference. The buffers are processed in array order. Undefined or
946 empty elements are skipped.
947 Returns the number of bytes written or undef on error.
949 y0 y = y0(x);
951 y0() is the Bessel function of the second kind of order 0.
953 y1 y = y1(x);
955 y1() is the Bessel function of the second kind of order 1.
957 yn y = yn(n, x);
959 yn() is the Bessel function of the second kind of order n.
961
963 This module does not export anything by default. The following export
964 tags are available:
965 :at All *at() functions like openat() etc. plus all AT_ constants
967 :id All get/set*id() functions like getuid() etc.
968 :is All is* functions like isdigit() etc.
969 :rw read(), readv(), write(), writev()
970 :prw pread(), preadv(), pwrite(), pwritev()
971 :clock All clock* functions and all CLOCK* constants
972 :fcntl All F_, FD_, O_, POSIX_FADV_ and SEEK_ constants (for AT_ use :at)
973 :fnm C<fnmatch()> and all FNM_ constants
974 :time_h All CLOCK_ and TIMER_ constants
975 :timer All timer_ functions and TIMER_ constants
976
978 "AT_EACCESS" "AT_EMPTY_PATH" "AT_FDCWD" "AT_NO_AUTOMOUNT"
979 "AT_REMOVEDIR" "AT_SYMLINK_FOLLOW" "AT_SYMLINK_NOFOLLOW"
980 "BOOT_TIME" "NEW_TIME" "OLD_TIME" "DEAD_PROCESS" "INIT_PROCESS"
982 "LOGIN_PROCESS" "USER_PROCESS" "RUN_LVL"
983 "CLOCK_BOOTTIME" "CLOCK_HIGHRES" "CLOCK_MONOTONIC"
985 "CLOCK_MONOTONIC_COARSE" "CLOCK_MONOTONIC_FAST"
986 "CLOCK_MONOTONIC_PRECISE" "CLOCK_MONOTONIC_RAW"
987 "CLOCK_PROCESS_CPUTIME_ID" "CLOCK_REALTIME" "CLOCK_REALTIME_COARSE"
988 "CLOCK_REALTIME_FAST" "CLOCK_REALTIME_PRECISE" "CLOCK_SOFTTIME"
989 "CLOCK_THREAD_CPUTIME_ID" "CLOCK_UPTIME" "CLOCK_UPTIME_FAST"
990 "CLOCK_UPTIME_PRECISE"
991 "_CS_GNU_LIBC_VERSION" "_CS_GNU_LIBPTHREAD_VERSION" "_CS_PATH"
993 "F_DUPFD" "F_DUPFD_CLOEXEC" "F_GETFD" "F_SETFD" "F_GETFL" "F_SETFL"
995 "F_GETLK" "F_SETLK" "F_SETLKW" "F_GETOWN" "F_SETOWN" "F_RDLCK"
996 "F_UNLCK" "F_WRLCK"
997 "FD_CLOEXEC"
999 "FNM_CASEFOLD" "FNM_FILE_NAME" "FNM_LEADING_DIR" "FNM_NOESCAPE"
1001 "FNM_NOMATCH" "FNM_PATHNAME" "FNM_PERIOD"
1002 "FP_INFINITE" "FP_NAN" "FP_NORMAL" "FP_SUBNORMAL" "FP_ZERO"
1004 "TIMER_ABSTIME" "ITIMER_PROF" "ITIMER_REAL" "ITIMER_VIRTUAL"
1006 "O_ACCMODE" "O_APPEND" "O_CLOEXEC" "O_CREAT" "O_DIRECTORY" "O_DSYNC"
1008 "O_EXEC" "O_NOCTTY" "O_NOFOLLOW" "O_NONBLOCK" "O_RDONLY" "O_RDWR"
1009 "O_RSYNC" "O_SEARCH" "O_SYNC" "O_TMPFILE" "O_TRUNC" "O_TTY_INIT"
1010 "O_WRONLY"
1011 "POSIX_FADV_NORMAL" "POSIX_FADV_SEQUENTIAL" "POSIX_FADV_RANDOM"
1013 "POSIX_FADV_NOREUSE" "POSIX_FADV_WILLNEED" "POSIX_FADV_DONTNEED"
1014 "RTLD_GLOBAL" "RTLD_LAZY" "RTLD_LOCAL" "RTLD_NOW"
1016 "SEEK_SET" "SEEK_CUR" "SEEK_END"
1018 "UTIME_NOW" "UTIME_OMIT"
1020
1022 For whatever reason, "preadv()" and "pwritev()" are not part of POSIX.
1023 They are included anyway.
1024
1026 Initially hacked together by Carsten Gaebler.
1027
1029 This library is free software. You can redistribute and/or modify it
1030 under the terms of the Do What The Fuck You Want To Public License,
1031 Version 2, as published by Sam Hocevar. See the COPYING file or
1032 http://www.wtfpl.net/ for more details.
1033perl v5.32.1 2021-01-27 POSIX::2008(3)