From 2e52eb74463f15c745d64948cedfaee722d6268c Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Thu, 12 Jul 2018 13:01:58 +0200 Subject: ubifs: Rework ubifs_assert() 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 --- fs/ubifs/ubifs.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index d17e895ee87f..4368cde476b0 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -258,6 +258,18 @@ enum { LEB_RETAINED, }; +/* + * Action taken upon a failed ubifs_assert(). + * @ASSACT_REPORT: just report the failed assertion + * @ASSACT_RO: switch to read-only mode + * @ASSACT_PANIC: call BUG() and possible panic the kernel + */ +enum { + ASSACT_REPORT = 0, + ASSACT_RO, + ASSACT_PANIC, +}; + /** * struct ubifs_old_idx - index node obsoleted since last commit start. * @rb: rb-tree node @@ -1015,6 +1027,7 @@ struct ubifs_debug_info; * @bulk_read: enable bulk-reads * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc) * @rw_incompat: the media is not R/W compatible + * @assert_action: action to take when a ubifs_assert() fails * * @tnc_mutex: protects the Tree Node Cache (TNC), @zroot, @cnext, @enext, and * @calc_idx_sz @@ -1256,6 +1269,7 @@ struct ubifs_info { unsigned int bulk_read:1; unsigned int default_compr:2; unsigned int rw_incompat:1; + unsigned int assert_action:2; struct mutex tnc_mutex; struct ubifs_zbranch zroot; -- cgit v1.2.3