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package/skeleton-init-sysv: Set sticky bit on /dev/shm

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/dev/shm is a world-writable directory, like /tmp, and should also
have the sticky bit set.  Without this, any user can delete and
replace another user's files in /dev/shm.

This bug has been present since /dev/shm was added to the skeleton
/etc/fstab, but appears to have been fixed for systems using systemd
by commit 76fc9275f1 "system: separate sysv and systemd parts of the
skeleton" which went into Buildroot 2017.08.

Signed-off-by: Ben Hutchings <ben.hutchings@mind.be>
Fixes: 22fde22e35
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 0b2967e158)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Ben Hutchings 2024-04-11 17:20:16 +02:00 committed by Peter Korsgaard
parent 549aaab347
commit 3d1c04c05c
1 changed files with 1 additions and 1 deletions
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2
package/skeleton-init-sysv/skeleton/etc/fstab
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@ -2,7 +2,7 @@
/dev/root / ext2 rw,noauto 0 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts defaults,gid=5,mode=620,ptmxmode=0666 0 0
tmpfs /dev/shm tmpfs mode=0777 0 0
tmpfs /dev/shm tmpfs mode=1777 0 0
tmpfs /tmp tmpfs mode=1777 0 0
tmpfs /run tmpfs mode=0755,nosuid,nodev 0 0
sysfs /sys sysfs defaults 0 0