Commit Graph

22 Commits

Author SHA1 Message Date
Zhang Xiaoxu 3432e57493 jffs2: Fix list_del corruption if compressors initialized failed
There is a list_del corruption when remove the jffs2 module:

  list_del corruption, ffffffffa0623e60->next is NULL
  WARNING: CPU: 6 PID: 6332 at lib/list_debug.c:49 __list_del_entry_valid+0x98/0x130
  Modules linked in: jffs2(-) ]
  CPU: 6 PID: 6332 Comm: rmmod Tainted: G        W          6.1.0-rc2+ #5
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014
  RIP: 0010:__list_del_entry_valid+0x98/0x130
  ...
  Call Trace:
   <TASK>
   jffs2_unregister_compressor+0x3e/0xe0 [jffs2]
   jffs2_zlib_exit+0x11/0x30 [jffs2]
   jffs2_compressors_exit+0x1e/0x30 [jffs2]
   exit_jffs2_fs+0x16/0x44f [jffs2]
   __do_sys_delete_module.constprop.0+0x244/0x370
   do_syscall_64+0x35/0x80
   entry_SYSCALL_64_after_hwframe+0x46/0xb0

If one of the compressor initialize failed, the module always insert
success since jffs2_compressors_init() always return success, then
something bad may happen during remove the module.

For this scenario, let's insmod failed.

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2023-02-02 21:13:55 +01:00
Zhang Xiaoxu d5711ae52d jffs2: Use function instead of macro when initialize compressors
The initialized compressors should be released if one of them
initialize fail, this is the pre-patch for fix the problem, use
function instead of the macro in jffs2_compressors_init() to
simplify the codes, no functional change intended.

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2023-02-02 21:13:54 +01:00
Joe Perches 5a528957e7 jffs2: Use pr_fmt and remove jffs: from formats
Use pr_fmt to prefix KBUILD_MODNAME to appropriate logging messages.

Remove now unnecessary internal prefixes from formats.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-03-27 00:40:19 +01:00
Joe Perches da320f055a jffs2: Convert printks to pr_<level>
Use the more current logging style.

Coalesce formats, align arguments.
Convert uses of embedded function names to %s, __func__.

A couple of long line checkpatch errors I don't care about exist.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-03-27 00:39:40 +01:00
Joe Perches 9c261b33a9 jffs2: Convert most D1/D2 macros to jffs2_dbg
D1 and D2 macros are mostly uses to emit debugging messages.

Convert the logging uses of D1 & D2 to jffs2_dbg(level, fmt, ...)
to be a bit more consistent style with the rest of the kernel.

All jffs2_dbg output is now at KERN_DEBUG where some of
the previous uses were emitted at various KERN_<LEVEL>s.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-03-27 00:39:24 +01:00
Masanari Iida 4de0347872 jffs2: Fix typo in compr.c
Correct spelling "modul" to "module" in
fs/hffs2/compr.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-03-27 00:33:59 +01:00
Andres Salomon 123005f3cc jffs2: add compr=lzo and compr=zlib options
..to allow forcing of either compression scheme.  This will override
compiled-in defaults.  jffs2_compress is reworked a bit, as the lzo/zlib
override shares lots of code w/ the PRIORITY mode.

v2: update show_options accordingly.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-10-19 17:22:21 +03:00
Andres Salomon 92abc475d8 jffs2: implement mount option parsing and compression overriding
Currently jffs2 has compile-time constants (and .config options)
controlling whether or not the various compression/decompression
drivers are built in and enabled.  This is fine for embedded
systems, but it clashes with distribution kernels.  Distro kernels
tend to turn on everything; this causes OpenFirmware to fall
over, as it understands ZLIB-compressed inodes.  Booting a kernel
that has LZO compression enabled, writing to the boot partition,
and then rebooting causes OFW to fail to read the kernel from
the filesystem.  This is because LZO compression has priority
when writing new data to jffs2, if LZO is enabled.

This patch adds mount option parsing, and a single supported
option ("compr=none").  This adds the flexibility of being
able to specify which compressor overrides on a per-superblock
basis.  For now, we can simply disable compression;
additional flexibility coming soon.

v2: kill some printks, and implement show_options as suggested
by Artem Bityutskiy.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-10-19 17:22:20 +03:00
Mike Frysinger 088bd455c9 jffs2: drop unused model argument
The jffs2 compression framework provides a "model" argument when
compressing and decompressing, but the caller always passes in NULL
and the callees never use it.  So punt this useless overhead.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:49:11 +01:00
David Woodhouse 6088c05877 jffs2: Update copyright notices
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2010-08-08 14:15:22 +01:00
André Goddard Rosa af901ca181 tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:55 +01:00
Geert Uytterhoeven faa5c2a15e [JFFS2] Correct parameter names of jffs2_compress() in comments
Make the parameter names of jffs2_compress() in its comments match with the
actual implementation

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17 15:56:44 +01:00
Richard Purdie 3b23c1f5fa [JFFS2] Add a "favourlzo" compression mode
Add a "favourlzo" compression mode to jffs2 which tries to
optimise by size but gives lzo an advantage when comparing sizes.
This means the faster lzo algorithm can be preferred when there
isn't much difference in compressed size (the exact threshold can
be changed).

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-11 15:04:38 +01:00
Richard Purdie c799aca31b [JFFS2] Add LZO compression support.
Add LZO1X compression/decompression support to jffs2.

LZO's interface doesn't entirely match that required by jffs2 so a
buffer and memcpy is unavoidable.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-11 15:03:53 +01:00
David Woodhouse ef53cb02ff [JFFS2] Whitespace cleanups.
Convert many spaces to tabs; one or two other minor cosmetic fixes.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-10 10:01:22 +01:00
David Woodhouse c00c310eac [JFFS2] Tidy up licensing/copyright boilerplate.
In particular, remove the bit in the LICENCE file about contacting
Red Hat for alternative arrangements. Their errant IS department broke
that arrangement a long time ago -- the policy of collecting copyright
assignments from contributors came to an end when the plug was pulled on
the servers hosting the project, without notice or reason.

We do still dual-license it for use with eCos, with the GPL+exception
licence approved by the FSF as being GPL-compatible. It's just that nobody
has the right to license it differently.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-25 14:16:47 +01:00
Robert P. J. Day 8dc64fca75 [JFFS2] Delete everything related to obsolete JFFS2_PROC option
Delete everything related to the apparently non-existent kernel config
option JFFS2_PROC.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-02 14:11:25 -04:00
David Woodhouse 3bcc86f507 [JFFS2] Remove stray __exit from jffs2_compressors_exit()
It's used from the initfunc in case of failure too. We could actually do
with an '__initexit' for this kind of thing -- when built in to the
kernel, it could do with being dropped with the init text. We _could_
actually just use __init for it, but that would break if/when we start
dropping init text from modules. So let's just leave it as it was for now,
and mutter a little more about random 'janitorial' fixes from people who
aren't paying attention to what they're doing.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-03 00:25:50 +01:00
David Brownell 7d2beb1359 [JFFS2] Fix section mismatch warnings in JFFS2.
Mark certain functions with __init and __exit appropriately.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-16 16:08:10 +01:00
Thomas Gleixner 182ec4eee3 [JFFS2] Clean up trailing white spaces
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 14:18:56 +01:00
Ferenc Havasi 2227c0ba4b [jffs2] Remove compressor lzo and lzari
Remove unused compressor code

Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:31:24 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00