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Adapt io.c in libubifs, compared with linux kernel implementations:
1. Modify io related functions(eg. ubifs_leb_read/ubifs_leb_write,
etc.), adapt them with userspace io functions lseek/read/write.
2. Remove some functions(eg. record_magic_error, ubifs_bg_wbufs_sync)
which won't be used in fsck/mkfs.
3. Replce ubifs_errc with ubifs_err, because there will be no SB_SILENT
options in mkfs/fsck.
4. Initiate wbuf->size as c->max_write_size.
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Adapt super.c in libubifs, compared with linux kernel implementations:
1. It contains all definitions in common/super.c(Message printing
functions are replaced with linux kernel styles).
2. Remove some functions(eg. ubifs_iget, ubifs_dirty_inode) which won't
be used in fsck/mkfs.
3. Remove unused variables initialization in some functions(eg.
init_constants_early, init_constants_sb).
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Adapt ubifs header file in libubifs, compared with linux kernel
implementations:
1. New header file contains all definitions in common/ubifs.h
2. Remove some structures(eg. ubifs_mount_opts, bu_info) and
functions(eg. ubifs_sync_wbufs_by_inode, ubifs_jnl_XXX) which
won't be used in fsck/mkfs.
3. Modify some authentication related functions, keep functions
that mkfs may need, other functions are defined as empty.
4. Move ubifs message printing functions(ubifs_err/warn/msg) which
are originally defined in misc.c into ubifs.h.
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Import UBIFS libs from linux kernel. Next patches will replace ubifs
related source code with implementation of linux kernel, which makes
userspace implementation be same with linux kernel, then fsck.ubifs
can resuse the code.
Notice: lpt.c is modified with [1] applied. ubifs.h and orphan.c are
modified with [2] applied, journal.c is modified with [3] reverted(
because fsck runs in a single thread, so waitqueue is not needed to
be implemented in userspace.).
[1] https://lore.kernel.org/linux-mtd/20231228014112.2836317-13-chengzhihao1@huawei.com/
[2] https://lore.kernel.org/linux-mtd/20240410073751.2522830-1-chengzhihao1@huawei.com/
[3] https://lore.kernel.org/linux-mtd/20240122063103.359501-1-chengzhihao1@huawei.com/
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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