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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'.
39 lines
1.0 KiB
Plaintext
39 lines
1.0 KiB
Plaintext
# serial 46
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# See if we need to use our replacement for Solaris' openat et al functions.
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dnl Copyright (C) 2004-2017 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# Written by Jim Meyering.
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AC_DEFUN([gl_FUNC_OPENAT],
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[
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AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_CHECK_FUNCS_ONCE([openat])
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AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
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AC_REQUIRE([gl_PREPROC_O_CLOEXEC])
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case $ac_cv_func_openat+$gl_cv_func_lstat_dereferences_slashed_symlink+$gl_cv_macro_O_CLOEXEC in
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yes+*yes+yes)
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;;
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yes+*)
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# Solaris 10 lacks O_CLOEXEC.
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# Solaris 9 has *at functions, but uniformly mishandles trailing
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# slash in all of them.
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REPLACE_OPENAT=1
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;;
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*)
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HAVE_OPENAT=0
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;;
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esac
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])
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# Prerequisites of lib/openat.c.
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AC_DEFUN([gl_PREREQ_OPENAT],
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[
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AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
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:
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])
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