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fixed /sys mounting broken during overlayfs cleanup

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netblue30 2025-12-18 11:46:14 -05:00
parent 890b578bfd
commit b537aa57b9
1 changed files with 2 additions and 0 deletions
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2
src/firejail/fs.c
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@ -728,6 +728,8 @@ void fs_proc_sys_dev_boot(void) {
/* Mount a version of /sys that describes the network namespace */ /* Mount a version of /sys that describes the network namespace */
if (arg_debug) if (arg_debug)
printf("Remounting /sys directory\n"); printf("Remounting /sys directory\n");
if (umount2("/sys", MNT_DETACH) < 0 && !cfg.chrootdir)
fwarning("failed to unmount /sys\n");
if (mount("sysfs", "/sys", "sysfs", MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REC, NULL) < 0) if (mount("sysfs", "/sys", "sysfs", MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REC, NULL) < 0)
fwarning("failed to mount /sys\n"); fwarning("failed to mount /sys\n");
else else