mirror of
https://https.git.savannah.gnu.org/git/gnulib.git
synced 2026-09-06 05:31:48 +00:00
Paul Eggert
990fa9d50c
* NEWS, doc/posix-functions/open.texi: * doc/posix-functions/openat.texi: Document this. * lib/fcntl.in.h (O_CLOEXEC): Default to a nonzero value. (GNULIB_defined_O_CLOEXEC): New symbol. * lib/open.c: Include cloexec.h. (open): Support O_CLOEXEC. * lib/openat.c: Include cloexec.h. (rpl_openat): Support O_CLOEXEC. * lib/popen-safer.c: Do not include cloexec.h. (open_noinherit): Remove. (popen_safer): Use O_CLOEXEC instead of set_cloexec_flag. * lib/save-cwd.c: Do not include cloexec.h. (save_cwd): Use O_CLOEXEC instead of set_cloexec_flag. * m4/open-cloexec.m4: New file. * m4/open.m4 (gl_FUNC_OPEN): Require gl_PREPROC_O_CLOEXEC. Replace 'open' if O_CLOEXEC is not present. * m4/openat.m4 (gl_FUNC_OPENAT): Require gl_PREPROC_O_CLOEXEC. Replace 'openat' if O_CLOEXEC is not present. * modules/freopen (Depends-on): Depend on 'open' if replacing freopen. * modules/open (Files): Add m4/open-cloexec.m4. (Depends-on): Depend on cloexec if replacing 'open'. * modules/openat (Files): Add m4/open-cloexec.m4. (Depends-on): Depend on cloexec if replacing openat. * modules/popen-safer (Depends-on): Remove cloexec. * modules/save-cwd (Depends-on): Remove cloexec, and add fd-safer-flag and 'open'.
22 lines
718 B
Plaintext
22 lines
718 B
Plaintext
# Test whether O_CLOEXEC is defined.
|
|
|
|
dnl Copyright 2017 Free Software Foundation, Inc.
|
|
dnl This file is free software; the Free Software Foundation
|
|
dnl gives unlimited permission to copy and/or distribute it,
|
|
dnl with or without modifications, as long as this notice is preserved.
|
|
|
|
AC_DEFUN([gl_PREPROC_O_CLOEXEC],
|
|
[
|
|
AC_CACHE_CHECK([for O_CLOEXEC],
|
|
[gl_cv_macro_O_CLOEXEC],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM([[#include <fcntl.h>
|
|
#ifndef O_CLOEXEC
|
|
choke me;
|
|
#endif
|
|
]],
|
|
[[return O_CLOEXEC;]])],
|
|
[gl_cv_macro_O_CLOEXEC=yes],
|
|
[gl_cv_macro_O_CLOEXEC=no])])
|
|
])
|