blackbird-op-linux/fs/adfs, branch masterBlackbird™ Linux sources for OpenPOWERhttps://git.raptorcs.com/git/blackbird-op-linux/atom?h=master2020-01-25T16:31:59+00:00fs/adfs: bigdir: Fix an error code in adfs_fplus_read()2020-01-25T16:31:59+00:00Dan Carpenterdan.carpenter@oracle.com2020-01-24T10:15:37+00:00urn:sha1:587065dcac64e88132803cdb0a7f26bb4a79cf46
This code accidentally returns success, but it should return the
-EIO error code from adfs_fplus_validate_header().
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Fixes: d79288b4f61b ("fs/adfs: bigdir: calculate and validate directory checkbyte")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: mostly divorse inode number from indirect disc address2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:38+00:00urn:sha1:25e5d4df3b46a345dccc0a07f998ce443077b4ff
Avoid using the inode number as the indirect disc address, even though
these currently have the same value.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: super: add support for E and E+ floppy image formats2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:33+00:00urn:sha1:08ead1b8b98d90795bf934d93a718328d11f6ce6
Add support for ADFS E and E+ floppy image formats, which, unlike their
hard disk variants, do not have a filesystem boot block - they have a
single map zone, with the map fragment stored at sector 0.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: super: extract filesystem block probe2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:28+00:00urn:sha1:e3858e125bd57b827af52dfb38df6c8602559886
Separate the filesystem block probing from the superblock filling so
we can support other ADFS filesystem formats, such as the single-zone
E and E+ floppy image formats which do not have a boot block.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: dir: remove debug in adfs_dir_update()2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:23+00:00urn:sha1:ccbc80a89d1399b79e43544cfbe44df964a29810
Remove the noisy debug in adfs_dir_update().
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: super: fix inode dropping2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:18+00:00urn:sha1:f352064275adfeb6f88cb0fb25cc623750adf89f
When we have write support enabled, we must not drop inodes before they
have been written back, otherwise we lose updates to the filesystem on
umount. Keep the inodes around unless we are built in read-only mode,
or we are mounted read-only.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: bigdir: implement directory update support2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:13+00:00urn:sha1:a464152f2e6dfd6d8be45c5e591cb8be20a97bdb
Implement big directory entry update support in the same way that we
do for new directories.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: bigdir: calculate and validate directory checkbyte2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:08+00:00urn:sha1:d79288b4f61b40976182786ba2cb05ed5f2b6945
When reading a big directory, calculate the validate the directory
checkbyte to ensure that the directory contents are valid.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: bigdir: directory validation strengthening2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:11:02+00:00urn:sha1:aa3d4e015298fd523617c2bea392d02ea19eaa1a
Strengthen the directory validation by ensuring that the header fields
contain sensible values that fit inside the directory, and limit the
directory size to 4MB as per RISC OS requirements.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/adfs: bigdir: extract directory validation2020-01-21T01:12:42+00:00Russell Kingrmk+kernel@armlinux.org.uk2019-12-09T11:10:57+00:00urn:sha1:6674ecab9004dcc4d8a65744f581b9ccf1f17504
Extract the directory validation from the directory reading function as
we will want to re-use this code.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>