Move all functional checks to memmem-simple so that one has
a fully functional memmem by using just this module.
Restrict the memmem module to performance checks only.
Document exactly how the memmem and memmem-simple modules
relate to each other.
* m4/memmem.m4 (gl_FUNC_MEMMEM_SIMPLE, gl_FUNC_MEMMEM): Move the
empty needle check from the memmem module to memmem-simple.
Also expand the empty needle check to ensure the correct
pointer is returned, not just a non NULL pointer.
In gl_FUNC_MEMMEM, make the cross compilation check only
consider the versions with performance issues.
* doc/glibc-functions/memmem.texi: Rearrange the portability
documentation to correlate with the rearranged checks.
* lib/unistd.in.h: Include <netdb.h>, for getdomainname's declaration.
(getdomainname): Replace if needed. Provide the declaration if it is
missing. Don't use _GL_CXXALIAS_SYS_CAST.
* lib/getdomainname.c: Include <limits.h> and <sys/systeminfo.h>.
(getdomainname): When the system has getdomainname, call the system
function. When sysinfo (SI_SRPC_DOMAIN, ...) is possible, use that.
* m4/getdomainname.m4 (gl_FUNC_GETDOMAINNAME): Require
gl_HEADER_SYS_SOCKET and gl_HEADER_NETDB. Test whether the function is
found in libnsl. Look for the declaration also in <netdb.h>. Replace
the function if its second argument is of type 'int' or if it is found
in libnsl.
(gl_PREREQ_GETDOMAINNAME): Define HAVE_GETDOMAINNAME. Check for
<sys/systeminfo.h> and sysinfo().
* modules/getdomainname (Depends-on): Add netdb, sys_socket.
* m4/unistd_h.m4 (gl_UNISTD_H_DEFAULTS): Initialize
HAVE_DECL_GETDOMAINNAME and REPLACE_GETDOMAINNAME instead of
HAVE_GETDOMAINNAME.
* modules/unistd (Makefile.am): Substitute HAVE_DECL_GETDOMAINNAME and
REPLACE_GETDOMAINNAME instead of HAVE_GETDOMAINNAME.
* doc/glibc-functions/getdomainname.texi: Document the problems with
the getdomainname declaration.
* m4/printf.m4 (gl_PRINTF_INFINITE_LONG_DOUBLE): Don't guess yes on
NetBSD; the test fails on NetBSD 5.0.
* doc/{glibc,posix,pastposix}-{headers,functions}/*.texi: Update info
about NetBSD.
* m4/printf.m4 (gl_PRINTF_INFINITE_LONG_DOUBLE): Don't guess yes on
MacOS X; the test fails on MacOS X 10.5.8.
* doc/{glibc,posix,pastposix}-{headers,functions}/*.texi: Update info
about MacOS X.
* doc/glibc-functions/login_tty.texi: Mention the include file problem
on FreeBSD 8.0 and OpenBSD 4.6.
* lib/pty.in.h: Include <sys/types.h> before <libutil.h>.
* m4/pty_h.m4 (gl_PTY_H): Likewise.
* m4/pty.m4 (gl_FUNC_FORKPTY, gl_FUNC_OPENPTY): Likewise.
* m4/readutmp.m4 (gl_READUTMP): Include <sys/types.h> before <utmp.h>.
Invoke AC_INCLUDES_DEFAULT instead of using the undocumented variable
ac_includes_default.
Reported by Mats Erik Andersson <mats.andersson@gisladisker.se>.
The POSIX folks admitted that codifying the behavior of GNU
getopt on a leading '+' in optstring is worthwhile, for writing
programs such as env(1) even when POSIXLY_CORRECT is not defined.
http://austingroupbugs.net/view.php?id=191
However, the ruling is an enhancement request for the next
version of POSIX, and is not binding on platforms that comply
with POSIX 2008, so it should only be enforced for getopt-gnu.
* tests/test-getopt.h (test_getopt): Strengthen tests of leading
'+' handling, when requesting extensions.
* tests/test-getopt_long.h (test_getopt_long): Strengthen test of
'W;' handling.
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Detect glibc 2.11 bug.
* doc/posix-functions/getopt.texi (getopt): Document this.
* doc/glibc-functions/getopt_long.texi (getopt_long): Likewise.
* doc/glibc-functions/getopt_long_only.texi (getopt_long_only):
Likewise.
On MacOS 10.5 (Darwin 9.8.0), optind is incremented by 2 instead
of 1 in the case of a missing requirement on condensed options.
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Reject MacOS botch of
optind when missing a required argument.
* doc/posix-functions/getopt.texi (getopt): Document the bug.
* doc/glibc-functions/getopt_long.texi (getopt_long): Likewise.
* doc/glibc-functions/getopt_long_only.texi (getopt_long_only):
Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
The pty module was doing too much - replacing the header and checking
for functions. In the future, when we provide a working forkpty for
Solaris and HP-UX, and a stub for mingw, then the separation will be
even more useful.
* modules/pty (Makefile.am): Substitute new witnesses.
(Libraries): Move library detection...
* modules/forkpty: ...into new module.
* modules/openpty: Another new module.
* modules/pty-tests: Rename and split...
* modules/forkpty-tests: ...to this...
* modules/openpty-tests: ...and this.
* tests/test-pty.c: Rename and split...
* tests/test-forkpty.c: ...to this...
* tests/test-openpty.c: ...and this.
* m4/pty_h.m4 (gl_PTY_H_DEFAULTS): Add new witnesses.
(gl_PTY): Split library searching...
* m4/pty.m4 (gl_PTY_LIB): ...into new file.
(gl_FORKPTY, gl_OPENPTY): New macros.
* lib/pty.in.h (forkpty, openpty): Honor new witnesses.
* NEWS: Mention the split.
* MODULES.html.sh (Misc): Document the modules.
* doc/glibc-functions/forkpty.texi (forkpty): Likewise.
* doc/glibc-functions/openpty.texi (openpty): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Portions of this commit are commented out because they tickle
glibc bugs. For a real-life example of the bug:
$ env -ua -:
env: invalid option -- :
Try `env --help' for more information.
$ env -:
env: invalid option -- :
Try `env --help' for more information.
$ env -+
env: invalid option -- +
Try `env --help' for more information.
$ env -ua -+
Try `env --help' for more information.
Notice that when -+ is not given as the first argument, the
error message is mistakenly suppressed.
* modules/getopt-posix-tests (Depends-on): Add dup2.
* tests/test-getopt.c (ASSERT): Avoid stderr.
(main): Move stderr to a temporary file.
* tests/test-getopt.h (getopt_loop): No longer manipulate opterr.
Instead, add parameter to inform caller if output occurred.
(test_getopt): Adjust all tests to expect silence, and add new
tests of leading ":".
* doc/glibc-functions/getopt_long.texi (getopt_long): Document
glibc shortcomings with leading "-:" or "+:" in optstring.
* doc/glibc-functions/getopt_long_only.texi (getopt_long_only):
Likewise.
* doc/posix-functions/getopt.texi (getopt): Likewise.
Signed-off-by: Eric Blake <ebb9@byu.net>
Add coverage of optind==0 for getopt_long, since coreutils
depends on it. Also test an optstring containing "W;", since
that tends to expose corner-case bugs (even in glibc, so the
test is weaker than it could be).
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Require that getopt_long
supports optind=0.
* tests/test-getopt.c (OPTIND_MIN): Move...
* tests/test-getopt.h (OPTIND_MIN): ...here.
* tests/test-getopt_long.h (test_getopt_long): Add more coverage.
Require that optind=0 works, since modern BSD supports it in
addition to optreset, and since coreutils expects it.
(test_getopt_long_only): New test.
* doc/glibc-functions/getopt_long.texi (getopt_long): Document
glibc shortcomings with 'W;', and enforcement of optind=0.
* doc/glibc-functions/getopt_long_only.texi (getopt_long_only):
Likewise.
POSIX requires 'echo foo > bar; m4 -Dfoo=1 bar -Dfoo=2 bar' to
output '1' then '2'. To achieve this, m4 relies on the GNU
getopt{,_long} extension of a leading '-'. However, BSD getopt
fails to honor this extension when POSIXLY_CORRECT.
Also, BSD getopt fails to reparse POSIXLY_CORRECT from the
environment even when a reset is requested (whether by
optreset=1 or by optind=0).
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Test for the bug.
* tests/test-getopt.c (main): Check POSIXLY_CORRECT first, to
flush out BSD bug.
* tests/test-getopt.h (test_getopt): End lists with NULL.
* tests/test-getopt_long.h (test_getopt_long): Likewise.
(test_getopt_long_posix): Enhance test.
* modules/getopt-posix-tests (Depends-on): Add stdbool.
* doc/glibc-functions/getopt_long.texi (getopt_long): Mention
getopt-gnu.
* doc/glibc-functions/getopt_long_only.texi (getopt_long_only):
Likewise.
Signed-off-by: Eric Blake <ebb9@byu.net>
These days, most systems already declare getgroups with gid_t*.
But in the rare case that GETGROUPS_T is still int but gid_t
is short, the user should not have to uglify their code; let
the replacement hide all the magic.
Tested by configuring with ac_cv_type_getgroups=uint64_t on a
platform with 32-bit gid_t, and ignoring compiler warnings.
However, since we don't replace setgroups, the GETGROUPS_T
workaround is still needed there for now.
* lib/getgroups.c (rpl_getgroups): Change signature. Copy array
an element at a time if GETGROUPS_T is wrong size.
* lib/getugroups.h (getugroups): Change signature.
* lib/unistd.in.h (getgroups): Likewise.
* m4/getgroups.m4 (gl_FUNC_GETGROUPS): Use replacement if
signature needs fixing.
* m4/getugroups.m4 (gl_GETUGROUPS): No longer need
AC_TYPE_GETGROUPS.
* modules/group-member (Depends-on): Add getgroups.
* lib/group-member.c (group_info, get_group_info): Use gid_t.
(group_member): Rely on getgroups replacement.
* lib/getugroups.c (getugroups): Use gid_t.
* tests/test-getgroups.c (main): Likewise.
* NEWS: Mention the signature change.
* doc/posix-functions/getgroups.texi (getgroups): Mention the
problem with signature.
* doc/glibc-functions/setgroups.texi (setgroups): Mention that
GETGROUPS_T is still useful for setgroups.
Signed-off-by: Eric Blake <ebb9@byu.net>
utimes("file/",times) mistakenly succeeds. This commit doesn't fix
utimes, but does make utimensat be careful before calling utimes.
The test is now enhanced to test trailing slashes and directories.
Meanwhile, cygwin 1.5 stat() on a directory changes atime (it does
a readdir under the hood to populate st_nlink), so only mtime of
a directory is reliable enough for testing. Cygwin 1.7 no longer
has this problem, because it no longer wastes time on st_nlink.
* lib/utimens.c (fdutimens, lutimens): Force a stat if platform
has trailing slash bugs.
* tests/test-lutimens.h (test_lutimens): Enhance test.
* tests/test-utimens.h (test_utimens): Likewise.
* doc/posix-functions/utime.texi (utime): Document the bug.
* doc/posix-functions/utimes.texi (utimes): Likewise.
* doc/posix-functions/utimensat.texi (utimensat): Likewise.
* doc/glibc-functions/futimesat.texi (futimesat): Likewise.
* doc/glibc-functions/lutimes.texi (lutimes): Mention utimens.
* doc/posix-functions/futimens.texi (futimens): Mention
limitation.
Signed-off-by: Eric Blake <ebb9@byu.net>
* lib/getfilecon.c: New file.
* lib/se-selinux.in.h: Use a better inclusion guard symbol name.
[HAVE_SELINUX_SELINUX_H]: Include-next <selinux/selinux.h>.
[!HAVE_SELINUX_SELINUX_H]: Use better parameter names.
(fgetfilecon): Provide a stub.
* m4/selinux-selinux-h.m4 (gl_HEADERS_SELINUX_SELINUX_H): Don't
AC_SUBST SELINUX_SELINUX_H, since now we're generating that
file unconditionally.
When <selinux/selinux.h> is found, arrange to use wrappers.
* modules/selinux-h (Files): Add getfilecon.c.
(Makefile.am): Substitute include-next-related bits
into the now-always-generated selinux/selinux.h file.
* doc/glibc-functions/getfilecon.texi: New file.
* doc/glibc-functions/lgetfilecon.texi: New file.
* doc/glibc-functions/fgetfilecon.texi: New file.
* doc/glibc-functions/getfilecon-desc.texi: New file.
* doc/gnulib.texi (Glibc selinux/selinux.h): New section, by
which to pull in the new files.
* MODULES.html.sh (Misc): Add selinux-h.
* doc/posix-functions/fexecve.texi (fexecve): Now implemented in
cygwin.
* doc/glibc-functions/execvpe.texi (execvpe): New file.
* doc/gnulib.texi (Glibc unistd.h): Mention it.
Signed-off-by: Eric Blake <ebb9@byu.net>
Consolidate the m4 macros into a single file, since both modules
now have to worry about replacing canonicalize_file_name on
buggy glibc.
* m4/canonicalize-lgpl.m4: Move contents...
* m4/canonicalize.m4: ...here.
(gl_CANONICALIZE_LGPL): Factor realpath check...
(gl_FUNC_REALPATH_WORKS): ...into new macro. Enhance to catch
glibc 2.3.5 bug, fixed 2005-04-27.
(gl_FUNC_CANONICALIZE_FILENAME_MODE): Use it.
(gl_PREREQ_CANONICALIZE_LGPL): Inline...
(gl_CANONICALIZE_LGPL_SEPARATE): ...into this macro.
* modules/canonicalize-lgpl (Files): Manage file rename.
* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Provide default.
* modules/stdlib (Makefile.am): Substitute witness.
* lib/stdlib.in.h (canonicalize_file_name): Declare if replacement
is needed.
* lib/canonicalize-lgpl.c: Also compile if canonicalize_file_name
replacement is required.
* lib/canonicalize.c (canonicalize_file_name): Likewise.
* doc/glibc-functions/canonicalize_file_name.texi
(canonicalize_file_name): Document this.
* doc/posix-functions/realpath.texi (realpath): Likewise.
Signed-off-by: Eric Blake <ebb9@byu.net>
Match current gnulib conventions of glibc functions being declared in
the same header as glibc. This makes it easier to replace broken
canonicalize_file_name. canonicalize still requires "canonicalize.h"
because canonicalize_filename_mode is not in glibc. With this patch,
canonicalize-lgpl always provides realpath and canonicalize_file_name,
while canonicalize can provide canonicalize_file_name but not
realpath; if both modules are in use, canonicalize_file_name comes
from the LGPLv2+ sources, but the testing comes from canonicalize.
* modules/canonicalize-lgpl (Files): Drop canonicalize.h.
(Include): Mention <stdlib.h>.
(configure.ac): Mention functions we provide.
* modules/canonicalize (configure.ac): Likewise.
* m4/canonicalize-lgpl.m4 (gl_CANONICALIZE_LGPL): Always replace
realpath if canonicalize_file_name is missing.
* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Provide defaults.
* modules/stdlib (Makefile.am): Substitute witnesses.
* lib/stdlib.in.h (canonicalize_file_name, realpath): Declare.
* lib/canonicalize-lgpl.c (includes): Adjust accordingly.
* lib/canonicalize.h (canonicalize_file_name): Drop declaration.
* NEWS: Document this.
* doc/glibc-functions/canonicalize_file_name.texi
(canonicalize_file_name): Likewise.
* doc/posix-functions/realpath.texi (realpath): Likewise.
* tests/test-canonicalize-lgpl.c (includes): Use <stdlib.h>.
Signed-off-by: Eric Blake <ebb9@byu.net>
* modules/strstr: Split into...
* modules/strstr-simple: ...new module that does not care about
performance, but does care about glibc bug.
* m4/strstr.m4 (gl_FUNC_STRSTR): Split...
(gl_FUNC_STRSTR_SIMPLE): ...into new macro, which replaces strstr
if platform memchr is broken, per Debian bug 521737.
* m4/strcasestr.m4 (gl_FUNC_STRCASESTR_SIMPLE): React to broken
memchr.
* m4/memchr.m4 (gl_FUNC_MEMCHR): Only expand once.
* doc/posix-functions/strstr.texi (strstr): Document the fix.
* doc/glibc-functions/strcasestr.texi (strcasestr): Likewise.
* modules/mountlist (Depends-on): Add strstr-simple.
* modules/gen-uni-tables (Depends-on): Likewise.
* modules/argz (Depends-on): Add strstr.
Signed-off-by: Eric Blake <ebb9@byu.net>
