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daemon: Use ‘close_range’ where available.

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* nix/libutil/util.cc (closeMostFDs) [HAVE_CLOSE_RANGE]: Use
‘close_range’ when ‘exceptions’ is empty.
* config-daemon.ac: Check for <linux/close_range.h> and the
‘close_range’ symbol.

Change-Id: I12fa3bde58b003fcce5ea5a1fee1dcf9a92c0359
This commit is contained in:
Ludovic Courtès
2025-02-11 17:42:37 +01:00
parent 92205bab4d
commit f03e6eff2f
2 changed files with 20 additions and 8 deletions
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5
config-daemon.ac
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@@ -78,7 +78,8 @@ if test "x$guix_build_daemon" = "xyes"; then
dnl Chroot support.
AC_CHECK_FUNCS([chroot unshare])
AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h sys/syscall.h])
AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h sys/syscall.h \
linux/close_range.h])
if test "x$ac_cv_func_chroot" != "xyes"; then
AC_MSG_ERROR(['chroot' function missing, bailing out])
@@ -95,7 +96,7 @@ if test "x$guix_build_daemon" = "xyes"; then
dnl strsignal: for error reporting.
dnl statx: fine-grain 'stat' call, new in glibc 2.28.
AC_CHECK_FUNCS([lutimes lchown posix_fallocate sched_setaffinity \
statvfs nanosleep strsignal statx])
statvfs nanosleep strsignal statx close_range])
dnl Check for <locale>.
AC_LANG_PUSH(C++)