* doc/glibc-headers/uchar.texi: New file.
* doc/glibc-functions/aligned_alloc.texi: New file.
* doc/glibc-functions/c16rtomb.texi: New file.
* doc/glibc-functions/c32rtomb.texi: New file.
* doc/glibc-functions/clock_adjtime.texi: New file.
* doc/glibc-functions/fanotify_init.texi: New file.
* doc/glibc-functions/fanotify_mark.texi: New file.
* doc/glibc-functions/inet6_opt_append.texi: New file.
* doc/glibc-functions/inet6_opt_find.texi: New file.
* doc/glibc-functions/inet6_opt_finish.texi: New file.
* doc/glibc-functions/inet6_opt_get_val.texi: New file.
* doc/glibc-functions/inet6_opt_init.texi: New file.
* doc/glibc-functions/inet6_opt_next.texi: New file.
* doc/glibc-functions/inet6_opt_set_val.texi: New file.
* doc/glibc-functions/inet6_rth_add.texi: New file.
* doc/glibc-functions/inet6_rth_getaddr.texi: New file.
* doc/glibc-functions/inet6_rth_init.texi: New file.
* doc/glibc-functions/inet6_rth_reverse.texi: New file.
* doc/glibc-functions/inet6_rth_segments.texi: New file.
* doc/glibc-functions/inet6_rth_space.texi: New file.
* doc/glibc-functions/login.texi: New file.
* doc/glibc-functions/mbrtoc16.texi: New file.
* doc/glibc-functions/mbrtoc32.texi: New file.
* doc/glibc-functions/name_to_handle_at.texi: New file.
* doc/glibc-functions/ntp_gettimex.texi: New file.
* doc/glibc-functions/open_by_handle_at.texi: New file.
* doc/glibc-functions/prlimit.texi: New file.
* doc/glibc-functions/process_vm_readv.texi: New file.
* doc/glibc-functions/process_vm_writev.texi: New file.
* doc/glibc-functions/recvmmsg.texi: New file.
* doc/glibc-functions/scandirat.texi: New file.
* doc/glibc-functions/sendmmsg.texi: New file.
* doc/glibc-functions/setns.texi: New file.
* doc/glibc-functions/timespec_get.texi: New file.
* doc/gnulib.texi: Include them.
(Glibc sys/fanotify.h, Glibc sys/resource.h, Glibc uchar.h): New
sections.
Reported by Eric Blake.
* doc/glibc-functions/pipe2.texi (pipe2): Mention thread safety
issue in replacement.
* doc/glibc-functions/accept4.texi (accept4): Likewise.
Based on a report by Eric Wong.
* lib/sethostname.c: Don't include <string.h>.
(sethostname): No need to copy the argument string to the stack. Don't
call clearerr. Preserve errno when fprintf failed.
* m4/sethostname.m4 (gl_FUNC_SETHOSTNAME): Comment about HOST_NAME_MAX.
Don't invoke AC_REPLACE_FUNCS.
* modules/sethostname (Link): Remove empty section.
* doc/glibc-functions/sethostname.texi: Gnulib does not fix the ENOSYS
failure problem.
Define sethostname on platforms that do not provide the declaration.
Provide a function for platforms that lack it. The general handling
of the provided function is to simply return -1 and set errno to
ENOSYS. A specific handler is provided for Minix.
* lib/sethostname.c (sethostname): New file. Provide sethostname
for systems that lack it.
* m4/sethostname.m4 (gl_FUNC_SETHOSTNAME): New file. Detection of
sethostname declaration and function.
* modules/sethostname: New file. Define the sethostname module.
Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
* lib/stdlib.in.h (ptsname_r): Override if REPLACE_PTSNAME_R is 1.
* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Initialize REPLACE_PTSNAME_R.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Set REPLACE_PTSNAME_R if the
function is not declared or incompatibly declared.
* modules/stdlib (Makefile.am): Substitute REPLACE_PTSNAME_R.
* modules/ptsname_r (Depends-on, configure.ac): Update.
* doc/glibc-functions/ptsname_r.texi: Mention the OSF/1 problems.
For now, this replacement focuses solely on compilation
compatibility, and assumes that isatty() and ttyname_r() work
on a master side pty; if this assumption fails, or if
thread-safety is also required, then a later patch can follow
the lead of strerror_r.c in wrapping the system ptsname()
with a lock.
* modules/ptsname_r: New module.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): New file.
* lib/ptsname.c (__ptsname_r): Split...
* lib/ptsname_r.c: ...into new file.
* m4/stdlib_h.m4 (gl_STDLIB_H): Check for decl.
(gl_STDLIB_H_DEFAULTS): Set witness defaults.
* modules/stdlib (Makefile.am): Substitute witnesses.
* lib/stdlib.in.h (ptsname_r): Declare it.
* doc/glibc-functions/ptsname_r.texi (ptsname_r): Document it.
* MODULES.html.sh (Misc): Likewise.
* modules/ptsname (Depends-on): Alter dependency.
* doc/posix-functions/ptsname.texi (ptsname): Mention new module.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/glibc-headers/gshadow.texi: New file.
* doc/glibc-functions/endsgent.texi: New file.
* doc/glibc-functions/fgetsgent.texi: New file.
* doc/glibc-functions/fgetsgent_r.texi: New file.
* doc/glibc-functions/getsgent.texi: New file.
* doc/glibc-functions/getsgent_r.texi: New file.
* doc/glibc-functions/getsgnam.texi: New file.
* doc/glibc-functions/getsgnam_r.texi: New file.
* doc/glibc-functions/putsgent.texi: New file.
* doc/glibc-functions/setsgent.texi: New file.
* doc/glibc-functions/sgetsgent.texi: New file.
* doc/glibc-functions/sgetsgent_r.texi: New file.
* doc/glibc-functions/malloc_info.texi: New file.
* doc/glibc-functions/preadv.texi: New file.
* doc/glibc-functions/pwritev.texi: New file.
* doc/glibc-functions/register_printf_modifier.texi: New file.
* doc/glibc-functions/register_printf_specifier.texi: New file.
* doc/glibc-functions/register_printf_type.texi: New file.
* doc/glibc-functions/pthread_attr_getaffinity_np.texi: New file.
* doc/glibc-functions/pthread_attr_setaffinity_np.texi: New file.
* doc/glibc-functions/pthread_getaffinity_np.texi: New file.
* doc/glibc-functions/pthread_getname_np.texi: New file.
* doc/glibc-functions/pthread_mutex_consistent_np.texi: New file.
* doc/glibc-functions/pthread_mutexattr_getrobust_np.texi: New file.
* doc/glibc-functions/pthread_mutexattr_setrobust_np.texi: New file.
* doc/glibc-functions/pthread_setaffinity_np.texi: New file.
* doc/glibc-functions/pthread_setname_np.texi: New file.
* doc/glibc-functions/pthread_sigqueue.texi: New file.
* doc/glibc-functions/pthread_timedjoin_np.texi: New file.
* doc/glibc-functions/pthread_tryjoin_np.texi: New file.
* doc/glibc-functions/qsort_r.texi: New file.
* doc/glibc-functions/quick_exit.texi: New file.
* doc/glibc-functions/syncfs.texi: New file.
* doc/gnulib.texi: Include them.
(Glibc gshadow.h, Glibc sys/uio.h): New sections.
* doc/posix-functions/psiginfo.texi: Fix info about glibc version.
* doc/posix-functions/pthread_mutex_consistent.texi: Likewise.
* doc/posix-functions/pthread_mutexattr_getrobust.texi: Likewise.
* doc/posix-functions/pthread_mutexattr_setrobust.texi: Likewise.
* doc/glibc-functions/execvpe.texi: Likewise.
Use of "W;" in an option string may be rare, but we might as well
avoid crashing on it.
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADRS): Detect the problem.
* tests/test-getopt.h (test_getopt): Enhance test.
* tests/test-getopt_long.h (test_getopt_long): Likewise.
* doc/posix-functions/getopt.texi (getopt): Document it.
* 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>
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>
* 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.
* doc/glibc-functions/strchrnul.texi: Add more details about Cygwin
bug.
* lib/string.in.h (strchrnul): Use same arguments in _GL_FUNCDECL_RPL
as in _GL_FUNCDECL_SYS.
* m4/strchrnul.m4 (gl_FUNC_STRCHRNUL): Invoke gl_PREREQ_STRCHRNUL after
AC_LIBOBJ. When cross-compiling, say "guessing yes" not "yes".
A misplaced * means that cygwin 1.7.9 dereferences NULL rather
than returning the location of the trailing NUL byte.
* doc/glibc-functions/strchrnul.texi (strchrnul): Document bug.
* m4/strchrnul.m4 (gl_FUNC_STRCHRNUL): Detect it.
* m4/string_h.m4 (gl_HEADER_STRING_H_DEFAULTS): New witness.
* modules/string (Makefile.am): Substitute it.
* lib/string.in.h (strchrnul): Use it.
Signed-off-by: Eric Blake <eblake@redhat.com>
* modules/getloadavg (Link): New section.
* modules/getloadavg-tests (Makefile.am): Use GETLOADAVG_LIBS for
linking test-getloadavg.
* doc/glibc-functions/getloadavg.texi: Mention that Solaris 2.6 lacks
getloadavg.
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>
