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| author | Miklos Szeredi <mszeredi@suse.cz> | 2014-11-20 16:08:59 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-12-17 14:27:14 +0100 |
| commit | 10975933da3d65f8833d4ce98dcc2ecc63a695d6 (patch) | |
| tree | d68accb6a448af5031c2e4fb524e2557cdfb50d2 /fs | |
| parent | unfuck binfmt_misc.c (broken by commit e6084d4) (diff) | |
| download | linux-10975933da3d65f8833d4ce98dcc2ecc63a695d6.tar.xz linux-10975933da3d65f8833d4ce98dcc2ecc63a695d6.zip | |
init: fix read-write root mount
If mount flags don't have MS_RDONLY, iso9660 returns EACCES without actually
checking if it's an iso image.
This tricks mount_block_root() into retrying with MS_RDONLY. This results
in a read-only root despite the "rw" boot parameter if the actual
filesystem was checked after iso9660.
I believe the behavior of iso9660 is okay, while that of mount_block_root()
is not. It should rather try all types without MS_RDONLY and only then
retry with MS_RDONLY.
This change also makes the code more robust against the case when EACCES is
returned despite MS_RDONLY, which would've resulted in a lockup.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions