lib/strerror.c


Log

Author Commit Date CI Message
Paul Eggert 281b825e 2018-01-01T00:57:25 maint: Run 'make update-copyright'
Paul Eggert ca35d468 2017-09-13T00:48:18 all: prefer https: URLs
Paul Eggert a3fd683d 2017-01-01T02:59:23 version-etc: new year * build-aux/gendocs.sh (version): * doc/gendocs_template: * doc/gendocs_template_min: * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright dates by hand in templates and the like. * all files: Run 'make update-copyright'.
Bruno Haible 33a04971 2016-11-19T12:50:28 strerror: Make it compile in C++ mode. * lib/strerror.c (strerror): Ignore the return value of memcpy().
Paul Eggert 71090a2a 2016-01-01T00:56:19 version-etc: new year * build-aux/gendocs.sh (version): * doc/gendocs_template: * doc/gendocs_template_min: * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright dates by hand in templates and the like. * all files: Run 'make update-copyright'.
Paul Eggert b9bfe784 2015-01-01T01:38:23 version-etc: new year * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright date. * all files: Run 'make update-copyright'.
Eric Blake 1276a2c5 2014-01-01T00:04:40 maint: update copyright I ran 'make update-copyright'. Signed-off-by: Eric Blake <eblake@redhat.com>
Eric Blake 9fc81090 2013-01-01T00:50:58 maint: update all copyright year number ranges Run "make update-copyright". Compare to commit 1602f0a from last year. Signed-off-by: Eric Blake <eblake@redhat.com>
Jim Meyering 1602f0af 2012-01-01T10:04:58 maint: update all copyright year number ranges Run "make update-copyright".
Eric Blake c7487319 2011-06-21T08:50:51 strerror_r: fix OpenBSD behavior on 0 OpenBSD treats strerror_r(0,,) as a success, but with a message "Undefined error: 0"; while this is distinct from strerror_r(-1,,) returning "Unknown error: -1", it does not imply success. Meanwhile, if buf is short enough for ERANGE, then we can't use strstr to look for "Unknown" or "Undefined" in the resulting message, like we had been doing for strerror(). Fix this by shifting the burden - now the strerror-override code guarantees that 0 will have an override when needed. * lib/strerror-override.c (strerror_override): Also override 0 when needed. * lib/strerror-override.h (strerror_override): Likewise. * lib/strerror.c (strerror): Simplify, now that 0 override is done earlier. * lib/strerror_r.c (strerror_r): Likewise. * m4/strerror.m4 (gl_FUNC_STRERROR): Split detection of 0 behavior... (gl_FUNC_STRERROR_0): ...into new macro. * m4/strerror_r.m4 (gl_FUNC_STRERROR_R): Replace strerror_r if 0 is overridden. (gl_FUNC_STRERROR_R_WORKS): Avoid extra tests if 0 is broken. * modules/strerror-override (Files): Add strerror.m4. (configure.ac): Also provide override for 0 when needed. * doc/posix-functions/strerror.texi (strerror): Document this. * doc/posix-functions/perror.texi (perror): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
Eric Blake 79d4e75d 2011-06-07T20:49:04 strerror_r-posix: fix on MacOS MacOS X 10.5 strerror(0) is "Unknown error: 0", which is not distinguished from "Unknown error: -1" for out-of-range. Worse, strerror_r(0,,) is "Undefined error: 0", although strerror_r for all other out-of-range values matches strerror. * m4/strerror.m4 (gl_FUNC_STRERROR): Flush out MacOS bug. * m4/strerror_r.m4 (gl_FUNC_STRERROR_R_WORKS): Likewise, and fix logic bug. * lib/strerror_r.c (strerror_r): Fix the bug. * lib/strerror.c (strerror): Likewise. * doc/posix-functions/strerror_r.texi (strerror_r): Document the problem. * doc/posix-functions/strerror.texi (strerror): Likewise. * doc/posix-functions/perror.texi (perror): Likewise. * tests/test-strerror.c (main): Enhance test. * tests/test-strerror_r.c (main): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
Eric Blake 4c91b77e 2011-06-06T15:16:26 strerror: work around FreeBSD bug Breaking strerror away from strerror_r re-exposed the FreeBSD strerror(0) bug. * lib/strerror.c (strerror): Special case 0. Reported by Bruno Haible. Signed-off-by: Eric Blake <eblake@redhat.com>
Eric Blake 63ce57e7 2011-05-24T15:33:49 strerror: drop strerror_r dependency Since the errno module is responsible for introducing replacement errno values, it should also be responsible for translating those new values into strings. And by moving the replacements into a file managed by the errno, we can then break the dependency between strerror and strerror_r, so that strerror no longer drags in multi-threading modules required by strerror_r. Tested on glibc with: gl_cv_header_errno_h_complete=no gl_cv_func_working_strerror=no \ gl_cv_func_strerror_r_works=no ./gnulib-tool --with-tests \ --test strerror strerror_r-posix * lib/strerror_r.c (strerror_r): Move gnulib replacement strings... * lib/strerror-override.c (strerror_override): ...to new file. * lib/strerror-override.h: Add prototype. * lib/strerror-impl.h: Delete. * lib/strerror.c (strerror): New implementation. * modules/errno (Files): Add new files. (configure.ac): Compile new file as appropriate. * modules/strerror (Files): Drop unused file. (Depends-on): Drop strerror_r-posix. * MODULES.html.sh: Document strerror_r-posix. Requested by Sam Steingold. Signed-off-by: Eric Blake <eblake@redhat.com>
Bruno Haible 886f8503 2011-05-21T23:35:46 relocatable-prog-wrapper: Assume strerror() exists. * modules/relocatable-prog-wrapper (Files): Remove lib/strerror.c, m4/strerror.m4. (configure.ac): Don't invoke gl_FUNC_STRERROR_SEPARATE. * lib/relocwrapper.c: Remove mention of strerror module. * lib/strerror.c: Assume REPLACE_STRERROR is 1. * m4/strerror.m4 (gl_FUNC_STRERROR_SEPARATE): Remove macro. (gl_FUNC_STRERROR): Inline it here. Don't define REPLACE_STRERROR as a C macro.
Bruno Haible 30f176b6 2011-05-19T21:49:01 perror: Avoid clobbering the strerror buffer when possible. * lib/strerror-impl.h: New file, extracted from lib/strerror.c. * lib/strerror.c: Include it. * modules/strerror (Files): Add lib/strerror-impl.h. * lib/perror.c: Include <stdlib.h>, intprops.h, verify.h. (my_strerror): New function, defined through lib/strerror-impl.h. (perror): Use it instead of strerror. * modules/perror (Files): Add lib/strerror-impl.h. (Depends-on): Remove strerror. Add intprops, verify, strerror_r-posix.
Bruno Haible d3455c00 2011-05-19T05:24:33 strerror_r: Avoid clobbering the strerror buffer when possible. * lib/strerror_r.c (strerror_r): Merge the three implementations. Handle gnulib defined errno values here. When strerror() returns NULL or an empty string, return EINVAL. * lib/strerror.c (strerror): Always call strerror_r. Don't handle gnulib defined errno values here. * modules/strerror (Depends-on): Add verify, strerror_r-posix.
Jim Meyering d60f3b0c 2011-01-01T20:17:23 maint: update almost all copyright ranges to include 2011 Run the new "make update-copyright" rule.
Bruno Haible 3534c3af 2010-10-02T18:54:05 Define missing EDQUOT on NonStop Kernel. * lib/errno.in.h (EDQUOT): Assign a value if missing. * lib/strerror.c (rpl_strerror): Handle missing EDQUOT. * m4/errno_h.m4 (gl_HEADER_ERRNO_H): Also test whether EDQUOT is missing. * doc/posix-headers/errno.texi: Mention the NSK bug. * doc/posix-functions/strerror.texi: Mention the workaround on NSK. Reported by Joachim Schmitz <schmitz@hp.com>.
Bruno Haible fc06be3f 2010-06-09T12:47:59 Avoid relocwrapper link errors due to gnulib replacement functions.
Jim Meyering 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
Bruno Haible 441aa304 2009-12-10T20:28:30 Use spaces for indentation, not tabs.
Bruno Haible b96a57ff 2009-06-17T10:37:33 Define missing ESTALE on Interix 3.5.
Jim Meyering e4a3cd42 2009-01-16T12:09:48 strerror: avoid warnings about discarding "const" * lib/strerror.c (rpl_strerror): Instead of returning a const string from each and every "case", use a variable, and add a single cast after the switch.
Paolo Bonzini b98e9dbb 2008-10-03T18:23:59 Define EWOULDBLOCK to the same value as EAGAIN.
Bruno Haible 6c560a52 2008-09-14T04:18:44 Extend strerror to cover the added errno values.
Bruno Haible c7aa9851 2007-10-27T00:41:22 Change strerror so that it never returns an empty string.
Paul Eggert 73f48e6f 2007-10-11T14:43:30 Simplify and modernize strerror substitute, partly to fix Solaris 8 bug. * lib/strerror.c: Include <string.h> always, to test interface, and to remove the need for the dummy. Include intprops.h to compute width instead of doing it ourselves and missing a CHAR_BIT declaration, which broke tar 1.19 on Solaris 8. (strerror): Define it to return NULL if there's no system strerror. (rpl_strerror): Use INT_STRLEN_BOUND to compute bound. Omit !HAVE_STRERROR code. We don't need to worry about supporting ancient pre-strerror Unix systems well any more. Saying "unknown system error" is enough. * lib/string.in.h (strerror): Simplify the ifdef to reflect the simpler strerror.c implementation. * m4/strerror.m4 (gl_FUNC_STRERROR_SEPARATE, gl_PREREQ_STDERROR): Simplify the tests to reflect the simpler strerror implementation. * modules/strerror (Depends-on): Add intprops.
Bruno Haible 57fdfd3f 2007-10-07T19:14:58 Change copyright notice from GPLv2+ to GPLv3+.
Eric Blake d5d3e86d 2007-09-25T10:40:16 Fix strerror on Interix. * lib/string_.h (strerror): Declare replacement. * doc/functions/strerror.texi (strerror): Document the Interix shortcoming. * modules/string (Makefile.am): Support new hooks. * m4/string_h.m4 (gl_HEADER_STRING_H_DEFAULTS): Add new hooks. * m4/strerror.m4 (gl_FUNC_STRERROR): Defer to gl_FUNC_STRERROR_SEPARATE. (gl_FUNC_STRERROR_SEPARATE): Check for Interix bug. * lib/strerror.c (rpl_strerror): Provide replacement. * modules/strerror (Depends-on): Add string. (configure.ac): Detect use of module. * tests/test-strerror.c: New file. * modules/strerror-tests: New test module. * modules/argp (Depends-on): Add strerror. * modules/error (Depends-on): Likewise. Reported by Martin Koeppe. Signed-off-by: Eric Blake <ebb9@byu.net>
Bruno Haible f787b006 2007-03-04T00:06:30 Oops, really avoid an empty translation unit.
Bruno Haible 8badccbd 2007-03-03T19:53:01 Make it possible to compile strerror.c separately, unconditionally.
Paul Eggert 0632e115 2006-09-13T22:38:14 * _fpending.c: Include <config.h> unconditionally, since we no longer worry about uses that don't define HAVE_CONFIG_H. * acl.c, alloca.c, argmatch.c, atexit.c, backupfile.c: * basename.c, c-stack.c, c-strtod.c, calloc.c, canon-host.c: * canonicalize.c, chdir-long.c, chdir-safer.c, chown.c: * cloexec.c, close-stream.c, closeout.c, creat-safer.c: * cycle-check.c, diacrit.c, dirchownmod.c, dirfd.c, dirname.c: * dup-safer.c, dup2.c, error.c, euidaccess.c, exclude.c: * exitfail.c, fchmodat.c, fchown-stub.c, fd-safer.c: * file-type.c, fileblocks.c, filemode.c, filenamecat.c: * fnmatch.c, fopen-safer.c, fprintftime.c, free.c, fsusage.c: * ftruncate.c, fts-cycle.c, fts.c, full-write.c, gai_strerror.c: * getcwd.c, getdate.y, getdomainname.c, getgroups.c: * gethostname.c, gethrxtime.c, getloadavg.c, getlogin_r.c: * getndelim2.c, getnline.c, getopt.c, getopt1.c, getpass.c: * gettime.c, gettimeofday.c, getugroups.c, getusershell.c: * glob.c, group-member.c, hard-locale.c, hash-pjw.c, hash.c: * human.c, idcache.c, inet_ntop.c, inet_pton.c, inttostr.c: * isdir.c, lchown.c, linebuffer.c, long-options.c, lstat.c: * malloc.c, md5.c, memcasecmp.c, memchr.c, memcmp.c, memcoll.c: * memcpy.c, memmove.c, memrchr.c, mkancesdirs.c, mkdir-p.c: * mkdir.c, mkdirat.c, mkstemp-safer.c, mkstemp.c, modechange.c: * mountlist.c, nanosleep.c, obstack.c, open-safer.c: * openat-die.c, openat.c, pagealign_alloc.c, physmem.c: * pipe-safer.c, posixtm.c, posixver.c, putenv.c, quote.c: * quotearg.c, raise.c, readtokens.c, readtokens0.c, readutmp.c: * realloc.c, regex.c, rename.c, rmdir.c, rpmatch.c, safe-read.c: * same.c, save-cwd.c, savedir.c, setenv.c, settime.c, sha1.c: * sig2str.c, snprintf.c, strdup.c, strerror.c, strftime.c: * stripslash.c, strndup.c, strnlen.c, strpbrk.c, strtod.c: * strtoimax.c, strtol.c, strverscmp.c, tempname.c, time_r.c: * timegm.c, tmpfile-safer.c, unlinkdir.c, userspec.c, utime.c: * utimecmp.c, utimens.c, version-etc-fsf.c, version-etc.c: * xalloc-die.c, xgetcwd.c, xgethostname.c, xmalloc.c: * xmemcoll.c, xnanosleep.c, xreadlink.c, xstrtod.c: * xstrtoimax.c, xstrtol.c, xstrtoumax.c, yesno.c: Likewise.
Paul Eggert 222b0486 2005-09-19T17:28:14 Use a consistent style for including <config.h>. * __fpending.c, acl.c, argmatch.c, argp-help.c, argp-parse.c, argp-pvh.c, backupfile.c, basename.c, c-stack.c, calloc.c, check-version.c, cloexec.c, closeout.c, copy-file.c, creat-safer.c, cycle-check.c, dirfd.c, dirname.c, dup-safer.c, dup2.c, euidaccess.c, exclude.c, exitfail.c, fatal-signal.c, fd-safer.c, file-type.c, fileblocks.c, filemode.c, filenamecat.c, findprog.c, fnmatch.c, fopen-safer.c, free.c, fsusage.c, ftruncate.c, full-write.c, fwriteerror.c, getaddrinfo.c, getcwd.c, getdelim.c, getline.c, getlogin_r.c, getndelim2.c, getnline.c, getopt1.c, getpass.c, group-member.c, hard-locale.c, hash-pjw.c, hash.c, human.c, idcache.c, inet_ntop.c, isdir.c, long-options.c, malloc.c, memcasecmp.c, memcmp.c, memcoll.c, memcpy.c, memmove.c, mkdir-p.c, modechange.c, mountlist.c, open-safer.c, physmem.c, pipe-safer.c, pipe.c, poll.c, posixver.c, progname.c, progreloc.c, putenv.c, quote.c, quotearg.c, readline.c, readlink.c, realloc.c, regex.c, rename.c, rmdir.c, rpmatch.c, safe-read.c, same.c, save-cwd.c, savedir.c, sig2str.c, strcspn.c, strerror.c, stripslash.c, strncasecmp.c, strndup.c, strnlen.c, strnlen1.c, strsep.c, strstr.c, strtod.c, strtoimax.c, strtol.c, strverscmp.c, tempname.c, time_r.c, userspec.c, utimecmp.c, version-etc-fsf.c, version-etc.c, wait-process.c, xalloc-die.c, xgetcwd.c, xmalloc.c, xmemcoll.c, xnanosleep.c, xreadlink.c, xsetenv.c, xstrndup.c, xstrtoimax.c, xstrtol.c, xstrtoumax.c, yesno.c: Standardize inclusion of config.h. * __fpending.h, dirfd.h, getdate.h, human.h, inttostr.h: Removed inclusion of config.h from header files. * inttostr.c: Adjusted in-tree users. * timespec.h: Remove superfluous warning to include config.h. * atexit.c, chdir-long.c chown.c, fchown-stub.c, getgroups.c, gettimeofday.c, lchown.c, lstat.c, mkdir.c, mkstemp.c, nanosleep.c, openat.c, raise.c, readtokens0.c, readutmp.c, unlinkdir.c: Guard inclusion of config.h with HAVE_CONFIG_H.
Paul Eggert 267a39ba 2005-05-14T06:03:57 *** empty log message ***
Paul Eggert 08d9433c 2003-07-31T07:28:59 Include config.h, limits.h. Declare sprintf. (strerror): Don't assume that a printable int fits in 14 bytes.
Karl Berry d3a50fbf 2002-09-03T15:36:39 simplest version