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ext4: Send notifications on error

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[ Upstream commit 9a089b21f7 ]

Send a FS_ERROR message via fsnotify to a userspace monitoring tool
whenever a ext4 error condition is triggered.  This follows the existing
error conditions in ext4, so it is hooked to the ext4_error* functions.

Link: https://lore.kernel.org/r/20211025192746.66445-30-krisman@collabora.com
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Gabriel Krisman Bertazi 2021-10-25 16:27:44 -03:00 committed by Greg Kroah-Hartman
parent 0e825bc84d
commit b394c80e2c
1 changed files with 8 additions and 0 deletions
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8
fs/ext4/super.c
View file

@ -46,6 +46,7 @@
#include <linux/part_stat.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/fsnotify.h>
#include "ext4.h"
#include "ext4_extents.h" /* Needed for trace points definition */
@ -753,6 +754,8 @@ void __ext4_error(struct super_block *sb, const char *function,
sb->s_id, function, line, current->comm, &vaf);
va_end(args);
}
fsnotify_sb_error(sb, NULL, error ? error : EFSCORRUPTED);
ext4_handle_error(sb, force_ro, error, 0, block, function, line);
}
@ -783,6 +786,8 @@ void __ext4_error_inode(struct inode *inode, const char *function,
current->comm, &vaf);
va_end(args);
}
fsnotify_sb_error(inode->i_sb, inode, error ? error : EFSCORRUPTED);
ext4_handle_error(inode->i_sb, false, error, inode->i_ino, block,
function, line);
}
@ -821,6 +826,8 @@ void __ext4_error_file(struct file *file, const char *function,
current->comm, path, &vaf);
va_end(args);
}
fsnotify_sb_error(inode->i_sb, inode, EFSCORRUPTED);
ext4_handle_error(inode->i_sb, false, EFSCORRUPTED, inode->i_ino, block,
function, line);
}
@ -888,6 +895,7 @@ void __ext4_std_error(struct super_block *sb, const char *function,
printk(KERN_CRIT "EXT4-fs error (device %s) in %s:%d: %s\n",
sb->s_id, function, line, errstr);
}
fsnotify_sb_error(sb, NULL, errno ? errno : EFSCORRUPTED);
ext4_handle_error(sb, false, -errno, 0, 0, function, line);
}