gnulib: lib/safe-write.h annotate

annotate lib/safe-write.h @ 40140:81f075eaa990

ptsname_r: Work around bug on Android 4.3. * m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is correct. * lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R is defined, just fix the return value. * doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword: The behaviour of musl libc is nothing to be "fixed", since it is compliant with the next POSIX standard.

author	Bruno Haible <bruno@clisp.org>
date	Sat, 26 Jan 2019 15:23:19 +0100
parents	b06060465f09
children

rev	line source
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	1 /* An interface to write() that retries after interrupts.
40057 b06060465f09 maint: Run 'make update-copyright' Paul Eggert <eggert@cs.ucla.edu> parents: 19484 diff changeset	2 Copyright (C) 2002, 2009-2019 Free Software Foundation, Inc.
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	3
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 5848 diff changeset	4 This program is free software: you can redistribute it and/or modify
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	5 it under the terms of the GNU General Public License as published by
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 5848 diff changeset	6 the Free Software Foundation; either version 3 of the License, or
bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 5848 diff changeset	7 (at your option) any later version.
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	8
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	9 This program is distributed in the hope that it will be useful,
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	10 but WITHOUT ANY WARRANTY; without even the implied warranty of
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	12 GNU General Public License for more details.
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	13
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	14 You should have received a copy of the GNU General Public License
19190 9759915b2aca all: prefer https: URLs Paul Eggert <eggert@cs.ucla.edu> parents: 18626 diff changeset	15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	16
15336 5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	17 /* Some system calls may be interrupted and fail with errno = EINTR in the
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	18 following situations:
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	19 - The process is stopped and restarted (signal SIGSTOP and SIGCONT, user
16935 498a2211d839 Write "Mac OS X" instead of "MacOS X". Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	20 types Ctrl-Z) on some platforms: Mac OS X.
15336 5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	21 - The process receives a signal for which a signal handler was installed
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	22 with sigaction() with an sa_flags field that does not contain
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	23 SA_RESTART.
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	24 - The process receives a signal for which a signal handler was installed
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	25 with signal() and for which no call to siginterrupt(sig,0) was done,
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	26 on some platforms: AIX, HP-UX, IRIX, OSF/1, Solaris.
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	27
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	28 This module provides a wrapper around write() that handles EINTR. */
5ba0229c806b Comments about EINTR. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	29
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	30 #include <stddef.h>
9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	31
4049 6a1238f585b1 Synchronize safe-write with safe-read. Bruno Haible <bruno@clisp.org> parents: 4002 diff changeset	32 #define SAFE_WRITE_ERROR ((size_t) -1)
6a1238f585b1 Synchronize safe-write with safe-read. Bruno Haible <bruno@clisp.org> parents: 4002 diff changeset	33
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	34 /* Write up to COUNT bytes at BUF to descriptor FD, retrying if interrupted.
4049 6a1238f585b1 Synchronize safe-write with safe-read. Bruno Haible <bruno@clisp.org> parents: 4002 diff changeset	35 Return the actual number of bytes written, zero for EOF, or SAFE_WRITE_ERROR
6a1238f585b1 Synchronize safe-write with safe-read. Bruno Haible <bruno@clisp.org> parents: 4002 diff changeset	36 upon error. */
4002 9fcf64c770ed Orthogonal approach to read()/write() that handles EINTR and counts > 2^31 Bruno Haible <bruno@clisp.org> parents: diff changeset	37 extern size_t safe_write (int fd, const void *buf, size_t count);

Mercurial > gnulib

annotate lib/safe-write.h @ 40140:81f075eaa990