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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
commit | 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch) | |
tree | 32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /grub-core/lib/gnulib/cloexec.h | |
parent | Initial commit. (diff) | |
download | grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.tar.xz grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.zip |
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'grub-core/lib/gnulib/cloexec.h')
-rw-r--r-- | grub-core/lib/gnulib/cloexec.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/grub-core/lib/gnulib/cloexec.h b/grub-core/lib/gnulib/cloexec.h new file mode 100644 index 0000000..06ad945 --- /dev/null +++ b/grub-core/lib/gnulib/cloexec.h @@ -0,0 +1,38 @@ +/* cloexec.c - set or clear the close-on-exec descriptor flag + + Copyright (C) 2004, 2009-2019 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + +*/ + +#include <stdbool.h> + +/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true, + or clear the flag if VALUE is false. + Return 0 on success, or -1 on error with 'errno' set. + + Note that on MingW, this function does NOT protect DESC from being + inherited into spawned children. Instead, either use dup_cloexec + followed by closing the original DESC, or use interfaces such as + open or pipe2 that accept flags like O_CLOEXEC to create DESC + non-inheritable in the first place. */ + +int set_cloexec_flag (int desc, bool value); + +/* Duplicates a file handle FD, while marking the copy to be closed + prior to exec or spawn. Returns -1 and sets errno if FD could not + be duplicated. */ + +int dup_cloexec (int fd); |