mirror/libbpf
1
0
Fork 0
mirror of https://github.com/netdata/libbpf.git synced 2026-03-21 16:59:07 +08:00
Code Issues Packages Projects Releases Wiki Activity

libbpf: Set close-on-exec flag on gzopen

Browse Source 
Enable the close-on-exec flag when using gzopen. This is especially important
for multithreaded programs making use of libbpf, where a fork + exec could
race with libbpf library calls, potentially resulting in a file descriptor
leaked to the new process. This got missed in 59842c5451fe ("libbpf: Ensure
libbpf always opens files with O_CLOEXEC").

Fixes: 59842c5451fe ("libbpf: Ensure libbpf always opens files with O_CLOEXEC")
Signed-off-by: Marco Vedovati <marco.vedovati@crowdstrike.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230810214350.106301-1-martin.kelly@crowdstrike.com
This commit is contained in:
Marco Vedovati
2023-08-10 14:43:53 -07:00
committed by Andrii Nakryiko
parent cd85f34103
commit 20699ecf61
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/libbpf.c
View File

@@ -1978,9 +1978,9 @@ static int bpf_object__read_kconfig_file(struct bpf_object *obj, void *data)
return -ENAMETOOLONG;
/* gzopen also accepts uncompressed files. */
file = gzopen(buf, "r");
file = gzopen(buf, "re");
if (!file)
file = gzopen("/proc/config.gz", "r");
file = gzopen("/proc/config.gz", "re");
if (!file) {
pr_warn("failed to open system Kconfig\n");