Commit 8ca869b2 authored by Ard Biesheuvel's avatar Ard Biesheuvel
Browse files

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: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarArd Biesheuvel <ardb@kernel.org>
parent f662092b

fs/pstore/inode.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

fs/pstore/platform.c

+1 −0
Original line number Diff line number Diff line
@@ -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++;

include/linux/pstore.h

+4 −0
Original line number Diff line number Diff line
@@ -57,6 +57,9 @@ struct pstore_info; 
 * @size:	size of @buf

 * @ecc_notice_size:

 *		ECC information for @buf

 * @priv:	pointer for backend specific use, will be

 *		kfree()d by the pstore core if non-NULL

 *		when the record is freed.

 *

 * Valid for PSTORE_TYPE_DMESG @type:

 *
@@ -74,6 +77,7 @@ struct pstore_record { 
	char			*buf;

	ssize_t			size;

	ssize_t			ecc_notice_size;

	void			*priv;



	int			count;

	enum kmsg_dump_reason	reason;