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| author |   Max Staudt <max@enpas.org> | 2020-08-27 17:49:00 +0200 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2020-08-31 12:20:31 +0200 |
| commit | d3a84a8d0dde4e26bc084b36ffcbdc5932ac85e2 (patch) | |
| tree | d084612eb51c7bc3f427fae594f1adc42defb9ca /Documentation | |
| parent | Linux 5.9-rc3 (diff) | |
| download | linux-dev-d3a84a8d0dde4e26bc084b36ffcbdc5932ac85e2.tar.xz linux-dev-d3a84a8d0dde4e26bc084b36ffcbdc5932ac85e2.zip | |
affs: fix basic permission bits to actually work
The basic permission bits (protection bits in AmigaOS) have been broken
in Linux' AFFS - it would only set bits, but never delete them.
Also, contrary to the documentation, the Archived bit was not handled.
Let's fix this for good, and set the bits such that Linux and classic
AmigaOS can coexist in the most peaceful manner.
Also, update the documentation to represent the current state of things.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Max Staudt <max@enpas.org>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/affs.rst | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/Documentation/filesystems/affs.rst b/Documentation/filesystems/affs.rst index 7f1a40dce6d3..5776cbd5fa53 100644 --- a/Documentation/filesystems/affs.rst +++ b/Documentation/filesystems/affs.rst @@ -110,13 +110,15 @@ The Amiga protection flags RWEDRWEDHSPARWED are handled as follows: - R maps to r for user, group and others. On directories, R implies x. - - If both W and D are allowed, w will be set. + - W maps to w. - E maps to x. - - H and P are always retained and ignored under Linux. + - D is ignored. - - A is always reset when a file is written to. + - H, S and P are always retained and ignored under Linux. + + - A is cleared when a file is written to. User id and group id will be used unless set[gu]id are given as mount options. Since most of the Amiga file systems are single user systems @@ -128,11 +130,13 @@ Linux -> Amiga: The Linux rwxrwxrwx file mode is handled as follows: - - r permission will set R for user, group and others. + - r permission will allow R for user, group and others. + + - w permission will allow W for user, group and others. - - w permission will set W and D for user, group and others. + - x permission of the user will allow E for plain files. - - x permission of the user will set E for plain files. + - D will be allowed for user, group and others. - All other flags (suid, sgid, ...) are ignored and will not be retained. |