kc3-lang/gnulib/lib/pipe2.c

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lib/pipe2.c

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Log

Author	Commit	Date	CI	Message
	341111f6	2012-02-09T21:39:05		maint: replace FSF snail-mail addresses with URLs * config/argz.mk, lib/accept4.c, lib/alignof.h, lib/alloca.in.h: * lib/alphasort.c, lib/arcfour.c, lib/arcfour.h, lib/arctwo.c: * lib/arctwo.h, lib/argz.c, lib/arpa_inet.in.h, lib/asnprintf.c: * lib/asprintf.c, lib/assert.in.h, lib/base32.c, lib/base32.h: * lib/base64.c, lib/base64.h, lib/c-ctype.c, lib/c-ctype.h: * lib/c-strcase.h, lib/c-strcasecmp.c, lib/c-strncasecmp.c: * lib/check-version.c, lib/check-version.h, lib/config.charset: * lib/ctype.in.h, lib/des.c, lib/des.h, lib/dup3.c, lib/errno.in.h: * lib/float+.h, lib/fnmatch.c, lib/fnmatch.in.h, lib/fnmatch_loop.c: * lib/fseeko.c, lib/gai_strerror.c, lib/gc-gnulib.c: * lib/gc-libgcrypt.c, lib/gc-pbkdf2-sha1.c, lib/gc.h: * lib/getaddrinfo.c, lib/getdelim.c, lib/getfilecon.c, lib/getline.c: * lib/getlogin_r.c, lib/getpass.c, lib/getpass.h, lib/gettext.h: * lib/gettimeofday.c, lib/glob.in.h, lib/glthread/cond.c: * lib/glthread/cond.h, lib/glthread/lock.c, lib/glthread/lock.h: * lib/glthread/thread.c, lib/glthread/thread.h: * lib/glthread/threadlib.c, lib/glthread/yield.h, lib/hmac-md5.c: * lib/hmac-sha1.c, lib/hmac.h, lib/iconv.c, lib/iconv.in.h: * lib/iconv_close.c, lib/iconv_open.c, lib/inet_ntop.c, lib/isfinite.c: * lib/isinf.c, lib/iswblank.c, lib/langinfo.in.h, lib/link.c: * lib/localcharset.c, lib/localcharset.h, lib/lseek.c, lib/malloc.c: * lib/malloca.c, lib/malloca.h, lib/md2.c, lib/md2.h, lib/md4.c: * lib/md4.h, lib/md5.c, lib/md5.h, lib/memmem.c, lib/mempcpy.c: * lib/memset.c, lib/memxor.c, lib/memxor.h, lib/minmax.h, lib/mktime.c: * lib/msvc-inval.c, lib/msvc-inval.h, lib/msvc-nothrow.c: * lib/msvc-nothrow.h, lib/netdb.in.h, lib/netinet_in.in.h, lib/nproc.c: * lib/nproc.h, lib/obstack_printf.c, lib/pathmax.h, lib/pipe.c: * lib/pipe2.c, lib/poll.c, lib/poll.in.h, lib/printf-args.c: * lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h: * lib/pselect.c, lib/pthread.in.h, lib/pty-private.h, lib/pty.in.h: * lib/read-file.c, lib/read-file.h, lib/ref-add.sin, lib/ref-del.sin: * lib/regcomp.c, lib/regex.c, lib/regex.h, lib/regex_internal.c: * lib/regex_internal.h, lib/regexec.c, lib/rijndael-alg-fst.c: * lib/rijndael-alg-fst.h, lib/rijndael-api-fst.c: * lib/rijndael-api-fst.h, lib/rint.c, lib/rintf.c, lib/rintl.c: * lib/round.c, lib/roundf.c, lib/roundl.c, lib/scandir.c, lib/select.c: * lib/sha1.c, lib/sha1.h, lib/size_max.h, lib/snprintf.c: * lib/stdalign.in.h, lib/stdarg.in.h, lib/stdbool.in.h: * lib/stddef.in.h, lib/stdint.in.h, lib/stdio.in.h, lib/str-kmp.h: * lib/str-two-way.h, lib/strcasecmp.c, lib/strcasestr.c, lib/strdup.c: * lib/striconv.c, lib/striconv.h, lib/string.in.h, lib/strings.in.h: * lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/strpbrk.c: * lib/strptime.c, lib/strsep.c, lib/strstr.c, lib/strverscmp.c: * lib/sys_file.in.h, lib/sys_ioctl.in.h, lib/sys_select.in.h: * lib/sys_socket.in.h, lib/sys_stat.in.h, lib/sys_time.in.h: * lib/sys_times.in.h, lib/sys_types.in.h, lib/sys_uio.in.h: * lib/sys_utsname.in.h, lib/sys_wait.in.h, lib/tcgetsid.c: * lib/termios.in.h, lib/time.in.h, lib/time_r.c, lib/timegm.c: * lib/times.c, lib/unictype/3level.h, lib/unictype/3levelbit.h: * lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h, lib/vasprintf.c: * lib/vsnprintf.c, lib/waitpid.c, lib/wchar.in.h, lib/wctype.in.h: * lib/xsize.h, tests/test-closein.c, tests/test-des.c: * tests/test-fclose.c, tests/test-fgetc.c, tests/test-filevercmp.c: * tests/test-fputc.c, tests/test-fread.c, tests/test-fwrite.c: * tests/test-gc-arcfour.c, tests/test-gc-arctwo.c, tests/test-gc-des.c: * tests/test-gc-hmac-md5.c, tests/test-gc-hmac-sha1.c: * tests/test-gc-md2.c, tests/test-gc-md4.c, tests/test-gc-md5.c: * tests/test-gc-pbkdf2-sha1.c, tests/test-gc-rijndael.c: * tests/test-gc-sha1.c, tests/test-gc.c, tests/test-getdelim.c: * tests/test-getline.c, tests/test-getndelim2.c, tests/test-md2.c: * tests/test-md4.c, tests/test-parse-datetime.c, tests/test-perror.c: * tests/test-perror2.c, tests/test-pipe.c, tests/test-pipe2.c: * tests/test-poll.c, tests/test-quotearg-simple.c: * tests/test-quotearg.c, tests/test-quotearg.h: * tests/test-round-ieee.c, tests/test-round1.c: * tests/test-roundf-ieee.c, tests/test-roundf1.c: * tests/test-roundl-ieee.c, tests/test-roundl.c: * tests/test-safe-alloc.c, tests/test-sigpipe.c: * tests/test-spawn-pipe-child.c, tests/test-spawn-pipe-main.c: * tests/test-strerror.c, tests/test-strerror_r.c: * tests/test-strsignal.c, tests/test-strverscmp.c: * tests/test-xmemdup0.c: Replace FSF snail mail addresses with URLs, as per GNU coding standards. See glibc bug <http://sourceware.org/bugzilla/show_bug.cgi?id=13673>.
	00f43085	2012-01-07T04:22:05		Talk about "native Windows API", not "Woe32". * lib/accept4.c: Update comments to mention native Windows. * lib/execute.c: Likewise. * lib/fatal-signal.c: Likewise. * lib/localcharset.c: Likewise. * lib/nanosleep.c: Likewise. * lib/nl_langinfo.c: Likewise. * lib/pclose.c: Likewise. * lib/pipe-filter-gi.c: Likewise. * lib/pipe-filter-ii.c: Likewise. * lib/pipe.c: Likewise. * lib/pipe2.c: Likewise. * lib/popen.c: Likewise. * lib/progreloc.c: Likewise. * lib/relocatable.c: Likewise. * lib/sigaction.c: Likewise. * lib/sigprocmask.c: Likewise. * lib/spawn-pipe.h: Likewise. * lib/spawn-pipe.c: Likewise. * lib/spawni.c: Likewise. * lib/stat-time.h: Likewise. * lib/w32spawn.h: Likewise. * tests/test-isatty.c: Likewise. * lib/config.charset: More comments. * doc/gnulib-intro.texi: Mention native Windows. * doc/posix-functions/_Exit_C99.texi: Likewise. * doc/posix-headers/fcntl.texi: Likewise.
	1602f0af	2012-01-01T10:04:58		maint: update all copyright year number ranges Run "make update-copyright".
	fd990b25	2011-09-23T23:03:42		pipe2: Fix compilation on pre-C99 compilers. * lib/pipe2.c (pipe2): Surround verify(...) declaration with braces.
	8ea6bf99	2011-08-17T14:35:00		pipe2: silence compiler warning Detected when testing pipe2 in isolation on mingw. The fail: label needs either gnulib O_NONBLOCK emulation, or non-Windows systems. * lib/pipe2.c (pipe2): Hide label if it is not used. Signed-off-by: Eric Blake <eblake@redhat.com>
	7269b35c	2011-06-29T17:05:08		pipe2: fix C89 compile problem IRIX cc didn't like the initialization. * lib/pipe2.c (pipe2): Avoid C99 array initialization. Reported by Bruno Haible. Signed-off-by: Eric Blake <eblake@redhat.com>
	3dbe75e4	2011-06-29T15:46:50		pipe, pipe2: don't corrupt fd on error I noticed a potential subtle double-close bug in libvirt. There, a common idiom is to initialize an int fd[2]={-1,-1}, then have multiple error paths goto common cleanup code. In the cleanup code, the fds are closed if they are not already -1; this works if the error label is reached before the pipe call, or after pipe succeeds, but if it was the pipe call itself that jumped to the error label, then it is relying on failed pipe() not altering the values already in fd array prior to the failure. Our pipe2 replacement violated this assumption, and could leave a non-negative value in the array, which in turn would let libvirt close an already-closed fd, possibly nuking an unrelated fd opened by another thread that happened to get the same value. As a result, I raised a POSIX issue regarding the behavior of pipe on failure: http://austingroupbugs.net/view.php?id=467 Using that test program, I learned that most systems leave fd unchanged on error, but that mingw always assigns -1 into the array. This fixes the mingw pipe() replacement, as well as the gnulib pipe2() replacement. I don't know of any race-free way to work around a cygwin crash: http://cygwin.com/ml/cygwin/2011-06/msg00328.html - we could always open() and then close() two fds to guess whether two spare fd still remain before calling pipe(), but that is racy. * lib/pipe.c (pipe): Leave fd unchanged on error. * lib/pipe2.c (pipe2): Likewise. * doc/posix-functions/pipe.texi (pipe): Document cygwin issue. * doc/glibc-functions/pipe2.texi (pipe2): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
	64e33838	2011-06-03T00:10:00		pipe2: Remove dependency on 'nonblocking' module. * lib/pipe2.c: Include verify.h. Include nonblocking.h only if O_NONBLOCK is defined by gnulib. (pipe2) [WIN32]: If O_NONBLOCK is not defined by gnulib, verify that it is zero. * modules/pipe2 (Depends-on): Add verify. Remove nonblocking. * tests/test-pipe2.c: Include nonblocking.h only if O_NONBLOCK is defined by gnulib. (get_nonblocking_flag): New function. (main): Test O_NONBLOCK flag only if it is nonzero.
	de3622c2	2011-04-17T23:36:27		pipe2: Simplify code. * lib/pipe2.c (pipe2): Reduce code duplication.
	0568a6e8	2011-04-08T10:52:55		pipe2: fix O_NONBLOCK support on mingw * modules/pipe2 (Depends-on): Add nonblocking. * lib/pipe2.c (pipe2) [WIN32]: Add O_NONBLOCK support. * tests/test-pipe2.c (is_nonblocking): Adjust test accordingly. * tests/test-nonblocking.c (main): Likewise. * modules/pipe2-tests (Makefile.am): Avoid link failure. Signed-off-by: Eric Blake <eblake@redhat.com>
	d60f3b0c	2011-01-01T20:17:23		maint: update almost all copyright ranges to include 2011 Run the new "make update-copyright" rule.
	ffb0b299	2010-09-10T11:55:27		fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines * doc/posix-headers/fcntl.texi (fcntl.h): Document that O_CLOEXEC is now defined to 0 if it is not defined, like other flags. Also, O_EXEC is now defined to be O_RDONLY if O_EXEC is not defined. Similarly for O_SEARCH; this last was already true, but not documented. * lib/fcntl.in.h (O_CLOEXEC): Define to 0 if not defined. * lib/dup-safer-flag.c (O_CLOEXEC): Remove now-useless #define. * lib/dup3.c, lib/pipe2.c, tests/test-dup-safer.c, tests/test-fcntl.c: Likewise. * lib/popen-safer.c (open_noinherit): Check whether O_CLOEXEC is zero, not whether it is defined. * tests/test-dup3.c, tests/test-pipe2.c (main): Likewise. * lib/progreloc.c (find_executable): Use O_EXEC rather than O_RDONLY. * lib/open.c (open): Check for O_SEARCH as well as for O_RDONLY.
	b2e2010c	2010-01-01T10:31:12		update nearly all FSF copyright year lists to include 2010 Use the same procedure as for 2009, outlined in http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/20081
	441aa304	2009-12-10T20:28:30		Use spaces for indentation, not tabs.
	0d9fce2a	2009-08-24T16:00:44		dup2, pipe2: fix some recent test failures on cygwin 1.5.x * lib/pipe2.c (includes): Add binary-io.h. * lib/dup2.c (rpl_dup2): Correct buggy errno value. Signed-off-by: Eric Blake <ebb9@byu.net>
	049bfdaa	2009-08-24T02:18:15		Avoid running into nonexistent system calls repeatedly.
	b23a8463	2009-08-24T00:42:22		Tolerate declared but missing pipe2 syscall.
	c794f071	2009-08-24T00:34:04		Move #ifs inside function.
	d7834f34	2009-08-23T13:10:40		Oops, fix last commit.
	1a661ca2	2009-08-23T10:46:39		Support O_TEXT, O_BINARY on all platforms.
	6ef5d068	2009-08-23T10:20:54		Fix test of fcntl's return value.
	7988d730	2009-08-22T18:46:44		New module 'pipe2'.