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Use 'posix_spawn_file_actions_addclosefrom_np' where available.

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* configure.ac: Check for 'posix_spawn_file_actions_addclosefrom_np'.
* libguile/posix.c (HAVE_ADDCLOSEFROM): New macro.
(close_inherited_fds): Wrap in #ifdef HAVE_ADDCLOSEFROM.
(do_spawn) [HAVE_ADDCLOSEFROM]: Use 'posix_spawn_file_actions_addclosefrom_np'.
This commit is contained in:
Ludovic Courtès 2023-03-29 11:21:38 +02:00
parent 7d7067fe15
commit 9cc85a4f52
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2 changed files with 17 additions and 1 deletions
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4
configure.ac
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@ -515,6 +515,7 @@ AC_CHECK_HEADERS([crt_externs.h])
# sched_getaffinity, sched_setaffinity - GNU extensions (glibc)
# sendfile - non-POSIX, found in glibc
# pipe2 - non-POSIX, found in glibc (GNU/Linux and GNU/Hurd)
# posix_spawn_file_actions_addclosefrom_np - glibc >= 2.34
#
AC_CHECK_FUNCS([DINFINITY DQNAN cexp chsize clog clog10 ctermid \
fesetround ftime ftruncate fchown fchownat fchmod fchdir readlinkat \
@ -528,7 +529,8 @@ AC_CHECK_FUNCS([DINFINITY DQNAN cexp chsize clog clog10 ctermid \
index bcopy rindex truncate isblank _NSGetEnviron \
strcoll_l strtod_l strtol_l newlocale uselocale utimensat \
fstatat futimens openat \
sched_getaffinity sched_setaffinity sendfile pipe2])
sched_getaffinity sched_setaffinity sendfile pipe2
posix_spawn_file_actions_addclosefrom_np])
# The newlib C library uses _NL_ prefixed locale langinfo constants.
AC_CHECK_DECLS([_NL_NUMERIC_GROUPING], [], [], [[#include <langinfo.h>]])