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authorArd Biesheuvel <ardb@kernel.org>2022-06-22 10:31:31 +0300
committerArd Biesheuvel <ardb@kernel.org>2022-06-24 21:40:04 +0300
commit8ca869b24538a7b5501af368e87e4a59b0c04117 (patch)
tree4ba6d8dfa417849391aaba1681294029c35aa9f0 /fs/pstore
parentf662092b2e0c4a43d09e5b1f67ca969ea47a93d3 (diff)
downloadlinux-8ca869b24538a7b5501af368e87e4a59b0c04117.tar.xz
pstore: Add priv field to pstore_record for backend specific use
The EFI pstore backend will need to store per-record variable name data when we switch away from the efivars layer. Add a priv field to struct pstore_record, and document it as holding a backend specific pointer that is assumed to be a kmalloc()d buffer, and will be kfree()d when the entire record is freed. Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'fs/pstore')
-rw-r--r--fs/pstore/inode.c1
-rw-r--r--fs/pstore/platform.c1
2 files changed, 2 insertions, 0 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 14658b009f1b..ffbadb8b3032 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -55,6 +55,7 @@ static void free_pstore_private(struct pstore_private *private)
return;
if (private->record) {
kfree(private->record->buf);
+ kfree(private->record->priv);
kfree(private->record);
}
kfree(private);
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index e26162f102ff..0c034ea39954 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -769,6 +769,7 @@ void pstore_get_backend_records(struct pstore_info *psi,
if (rc) {
/* pstore_mkfile() did not take record, so free it. */
kfree(record->buf);
+ kfree(record->priv);
kfree(record);
if (rc != -EEXIST || !quiet)
failed++;