linux-toradex.git/fs/ubifs/debug.c, branch v4.20-rc6

ubifs: Format changes for authentication support

2018-10-23T11:48:29+00:00

This patch adds the changes to the on disk format needed for
authentication support. We'll add:

* a HMAC covering super block node
* a HMAC covering the master node
* a hash over the root index node to the master node
* a hash over the LPT to the master node
* a flag to the filesystem flag indicating the filesystem is
  authenticated
* an authentication node necessary to authenticate the nodes written
  to the journal heads while they are written.
* a HMAC of a well known message to the super block node to be able
  to check if the correct key is provided

And finally, not visible in this patch, nevertheless explained here:

* hashes over the referenced child nodes in each branch of a index node

Signed-off-by: Sascha Hauer 
Signed-off-by: Richard Weinberger

ubifs: Rework ubifs_assert()

2018-08-14T22:25:21+00:00

With having access to struct ubifs_info in ubifs_assert() we can
give more information when an assert is failing.
By using ubifs_err() we can tell which UBIFS instance failed.

Also multiple actions can be taken now.
We support:
 - report: This is what UBIFS did so far, just report the failure and go
   on.
 - read-only: Switch to read-only mode.
 - panic: shoot the kernel in the head.

Signed-off-by: Richard Weinberger

ubifs: Pass struct ubifs_info to ubifs_assert()

2018-08-14T22:25:21+00:00

This allows us to have more context in ubifs_assert()
and take different actions depending on the configuration.

Signed-off-by: Richard Weinberger

ubifs: Fix cut and paste error on sb type comparisons

2017-05-08T18:48:41+00:00

The check for the bad node type of sb->type is checking sa->type
and not sb-type. This looks like a cut and paste error. Fix this.

Detected by PVS-Studio, warning: V581

Signed-off-by: Colin Ian King 
Signed-off-by: Richard Weinberger

ubifs: Fix debug messages for an invalid filename in ubifs_dump_inode

2017-03-30T07:27:53+00:00

instead of filenames, print inode numbers, file types, and length.

Signed-off-by: Hyunchul Lee 
Signed-off-by: Richard Weinberger

ubifs: Fix debug messages for an invalid filename in ubifs_dump_node

2017-03-30T07:27:47+00:00

if a character is not printable, print '?' instead of that.

Signed-off-by: Hyunchul Lee 
Signed-off-by: Richard Weinberger

ubifs: Implement encrypted filenames

2016-12-12T22:07:38+00:00

Signed-off-by: Richard Weinberger 
Signed-off-by: David Gstir 
Signed-off-by: Richard Weinberger

ubifs: ubifs_dump_inode: Fix dumping field bulk_read

2016-05-24T13:29:44+00:00

The wrong field (xattr) is dumped here due to a copy-and-paste error.

Signed-off-by: Andreas Gruenbacher 
Signed-off-by: Richard Weinberger

UBIFS: call dbg_is_power_cut() instead of reading c->dbg->pc_happened

2015-10-03T18:40:21+00:00

Call dbg_is_power_cut() to emulate power cut instead of reading
c->dbg->pc_happened. Otherwise, the function becomes dead code.

Signed-off-by: Sheng Yong 
Signed-off-by: Richard Weinberger

UBIFS: extend debug/message capabilities

2015-03-25T09:08:41+00:00

In the case where we have more than one volumes on different UBI
devices, it may be not that easy to tell which volume prints the
messages.  Add ubi number and volume id in ubifs_msg/warn/error
to help debug. These two values are passed by struct ubifs_info.

For those where ubifs_info is not initialized yet, ubifs_* is
replaced by pr_*. For those where ubifs_info is not avaliable,
ubifs_info is passed to the calling function as a const parameter.

The output looks like,

[   95.444879] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 696
[   95.484688] UBIFS (ubi0:1): UBIFS: mounted UBI device 0, volume 1, name "test1"
[   95.484694] UBIFS (ubi0:1): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[   95.484699] UBIFS (ubi0:1): FS size: 30220288 bytes (28 MiB, 238 LEBs), journal size 1523712 bytes (1 MiB, 12 LEBs)
[   95.484703] UBIFS (ubi0:1): reserved for root: 1427378 bytes (1393 KiB)
[   95.484709] UBIFS (ubi0:1): media format: w4/r0 (latest is w4/r0), UUID 40DFFC0E-70BE-4193-8905-F7D6DFE60B17, small LPT model
[   95.489875] UBIFS (ubi1:0): background thread "ubifs_bgt1_0" started, PID 699
[   95.529713] UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "test2"
[   95.529718] UBIFS (ubi1:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[   95.529724] UBIFS (ubi1:0): FS size: 19808256 bytes (18 MiB, 156 LEBs), journal size 1015809 bytes (0 MiB, 8 LEBs)
[   95.529727] UBIFS (ubi1:0): reserved for root: 935592 bytes (913 KiB)
[   95.529733] UBIFS (ubi1:0): media format: w4/r0 (latest is w4/r0), UUID EEB7779D-F419-4CA9-811B-831CAC7233D4, small LPT model

[  954.264767] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node type (255 but expected 6)
[  954.367030] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node at LEB 0:0, LEB mapping status 1

Signed-off-by: Sheng Yong 
Signed-off-by: Artem Bityutskiy