From U-Boot commit:
| commit 37f23885e4905ff500a8524328aa3084ac11cdb4
| Author: Ronald Zachariah <rozachar@cisco.com>
| Date: Thu Apr 28 07:08:34 2016 +0200
|
| fs: ext4: fix symlink read function
|
| The function ext4fs_read_symlink was unable to handle a symlink
| which had target name of exactly 60 characters.
|
| Signed-off-by: Ronald Zachariah <rozachar@cisco.com>
| Signed-off-by: Stefan Roese <sr@denx.de>
| Reviewed-by: Stephen Warren <swarren@nvidia.com>
| Cc: Tom Rini <trini@konsulko.com>
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The patch fixes this compiler's warning:
CC fs/ext4/ext4_common.o
fs/ext4/ext4_common.c:130:5: warning: no previous prototype for
'ext4fs_get_indir_block' [-Wmissing-prototypes]
int ext4fs_get_indir_block(struct ext2fs_node *node, struct
ext4fs_indir_block *indir, int blkno)
^
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
From U-Boot commit:
| commit 8b415f703f88d1d3b0466830047affbbf7f24913
| Author: Rommel Custodio <sessyargc+uboot@gmail.com>
| Date: Sun Jul 21 10:53:25 2013 +0200
|
| ext4fs: le32_to_cpu() used on a 16-bit field
|
| Fix reading ext4_extent_header struture on BE machines. Some 16 bit
| fields where converted to 32 bit fields, due to the byte swap on BE
| machines the containing value was corrupted. Therefore reading ext4
| filesystems on BE machines where broken before.
|
| Signed-off-by: Rommel Custodio <sessyargc+uboot@gmail.com>
| [sent via git-send-email; rework commit message]
| Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
| Reviewed-by: Simon Glass <sjg@chromium.org>
| Tested-by: Simon Glass <sjg@chromium.org>
| Tested-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
From U-Boot commit:
| commit 470173274d9ceb18a7140ef93e20be6c2236e7d9
| Author: Ionut Nicu <ioan.nicu.ext@nsn.com>
| Date: Mon Jan 13 11:59:24 2014 +0100
|
| ext4fs: use EXT2_BLOCK_SIZE instead of fs->blksz
|
| Using fs->blksz in ext4fs_get_extent_block() is not
| correct since fs->blksz is not initialized on the
| read path. Use EXT2_BLOCK_SIZE() instead which will
| produce the desired output.
|
| Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
| Signed-off-by: Mathias Rulf <mathias.rulf@nsn.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
From U-Boot commit:
| commit b5bbac1a9b07016602559ff483df265fef6c1f83
| Author: Ionut Nicu <ioan.nicu.ext@nsn.com>
| Date: Mon Jan 13 12:00:08 2014 +0100
|
| ext4fs: fix "invalid extent block" error
|
| For files where we actually have extent indexes following
| an extent header (ext_block->eh_depth != 0), the do/while
| loop from ext4fs_get_extent_block() does not select the
| proper extent index structure.
|
| For example, if we have:
|
| ext_block->eh_depth = 1
| ext_block->eh_entries = 1
| fileblock = 0
| index[0].ei_block = 0
|
| the do/while loop will exit with i set to 0 and the
| ext4fs_get_extent_block() function will return 0, even if
| there was a valid extent index structure following the
| header.
|
| Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
| Signed-off-by: Mathias Rulf <mathias.rulf@nsn.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
All filesystem drivers which need a backingstore device do the same
ignoring of '/dev/' in the backingstore followed by a cdev_open. Add a
helper function for it and let the core handle the cdev. As a side
effect this makes sure that fsdev->cdev is also set when a device is
mounted without the leading '/dev/' which was previously ignored
by the mount code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The ext4 implementation has been taken from U-Boot with some
changes:
- No global variables to allow for multiple filesystems to
be mounted and multiple files to be open.
- remove fs internal link following and use the barebox link
implementation.
- remove write support. This is incomplete in U-Boot, so I decided
to skip this for now.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>