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05 April 2024, 19:05:47 UTC
Revision 99663be772c827b8f5f594fe87eb4807be1994e5 authored by Vasiliy Kulikov on 05 April 2012, 21:25:04 UTC, committed by Linus Torvalds on 05 April 2012, 22:25:50 UTC 
proc: fix mount -t proc -o AAA
 
The proc_parse_options() call from proc_mount() runs only once at boot
time.  So on any later mount attempt, any mount options are ignored
because ->s_root is already initialized.

As a consequence, "mount -o <options>" will ignore the options.  The
only way to change mount options is "mount -o remount,<options>".

To fix this, parse the mount options unconditionally.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Reported-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>
Tested-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 10bdfb5
History
Tip revision: 99663be772c827b8f5f594fe87eb4807be1994e5 authored by Vasiliy Kulikov on 05 April 2012, 21:25:04 UTC
proc: fix mount -t proc -o AAA
Tip revision: 99663be
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