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| author | David Howells <dhowells@redhat.com> | 2021-10-21 10:15:26 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-07 16:40:56 +0300 |
| commit | a70f6526267e9f5fbf958a69c6112938b0b14bc4 (patch) | |
| tree | b795158ca0ec0b87b96a84efeaf8160baec8d30a /fs/cachefiles/main.c | |
| parent | 8390fbc46570dca6f1c7b170f19c612f9ec91a92 (diff) | |
| download | linux-a70f6526267e9f5fbf958a69c6112938b0b14bc4.tar.xz | |
cachefiles: Add some error injection support
Add support for injecting ENOSPC or EIO errors. This needs to be enabled
by CONFIG_CACHEFILES_ERROR_INJECTION=y. Once enabled, ENOSPC on things
like write and mkdir can be triggered by:
echo 1 >/proc/sys/cachefiles/error_injection
and EIO can be triggered on most operations by:
echo 2 >/proc/sys/cachefiles/error_injection
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/163819624706.215744.6911916249119962943.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906925343.143852.5465695512984025812.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967134412.1823006.7354285948280296595.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021532340.640689.18209494225772443698.stgit@warthog.procyon.org.uk/ # v4
Diffstat (limited to 'fs/cachefiles/main.c')
| -rw-r--r-- | fs/cachefiles/main.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/cachefiles/main.c b/fs/cachefiles/main.c index 47bc1cc078de..387d42c7185f 100644 --- a/fs/cachefiles/main.c +++ b/fs/cachefiles/main.c @@ -36,8 +36,18 @@ MODULE_LICENSE("GPL"); */ static int __init cachefiles_init(void) { + int ret; + + ret = cachefiles_register_error_injection(); + if (ret < 0) + goto error_einj; + pr_info("Loaded\n"); return 0; + +error_einj: + pr_err("failed to register: %d\n", ret); + return ret; } fs_initcall(cachefiles_init); @@ -48,6 +58,8 @@ fs_initcall(cachefiles_init); static void __exit cachefiles_exit(void) { pr_info("Unloading\n"); + + cachefiles_unregister_error_injection(); } module_exit(cachefiles_exit); |