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Commit e581ca81 authored by Kees Cook's avatar Kees Cook
Browse files

pstore: Create common record initializer 



In preparation for setting timestamps in the pstore core, create a common
initializer routine, instead of using static initializers.

Signed-off-by: default avatarKees Cook <keescook@chromium.org>
parent efb74e4b

fs/pstore/internal.h

+2 −0
Original line number Diff line number Diff line
@@ -30,5 +30,7 @@ extern void pstore_get_backend_records(struct pstore_info *psi, 
extern int	pstore_mkfile(struct dentry *root,

			      struct pstore_record *record);

extern bool	pstore_is_mounted(void);

extern void	pstore_record_init(struct pstore_record *record,

				   struct pstore_info *psi);



#endif

fs/pstore/platform.c

+21 −14
Original line number Diff line number Diff line
@@ -474,6 +474,14 @@ static size_t copy_kmsg_to_buffer(int hsize, size_t len) 
	return total_len;

}



void pstore_record_init(struct pstore_record *record,

			struct pstore_info *psinfo)

{

	memset(record, 0, sizeof(*record));



	record->psi = psinfo;

}



/*

 * callback from kmsg_dump. (s2,l2) has the most recently

 * written bytes, older bytes are in (s1,l1). Save as much
@@ -509,15 +517,14 @@ static void pstore_dump(struct kmsg_dumper *dumper, 
		int header_size;

		int zipped_len = -1;

		size_t dump_size;

		struct pstore_record record = {

			.type = PSTORE_TYPE_DMESG,

			.count = oopscount,

			.reason = reason,

			.part = part,

			.compressed = false,

			.buf = psinfo->buf,

			.psi = psinfo,

		};

		struct pstore_record record;



		pstore_record_init(&record, psinfo);

		record.type = PSTORE_TYPE_DMESG;

		record.count = oopscount;

		record.reason = reason;

		record.part = part;

		record.buf = psinfo->buf;



		if (big_oops_buf && is_locked) {

			dst = big_oops_buf;
@@ -587,12 +594,12 @@ static void pstore_console_write(struct console *con, const char *s, unsigned c) 
	const char *e = s + c;



	while (s < e) {

		struct pstore_record record = {

			.type = PSTORE_TYPE_CONSOLE,

			.psi = psinfo,

		};

		struct pstore_record record;

		unsigned long flags;



		pstore_record_init(&record, psinfo);

		record.type = PSTORE_TYPE_CONSOLE;



		if (c > psinfo->bufsize)

			c = psinfo->bufsize;
@@ -845,7 +852,7 @@ void pstore_get_backend_records(struct pstore_info *psi, 
			pr_err("out of memory creating record\n");

			break;

		}

		record->psi = psi;

		pstore_record_init(record, psi);



		record->size = psi->read(record);

fs/pstore/pmsg.c

+5 −5
Original line number Diff line number Diff line
@@ -22,16 +22,16 @@ static DEFINE_MUTEX(pmsg_lock); 
static ssize_t write_pmsg(struct file *file, const char __user *buf,

			  size_t count, loff_t *ppos)

{

	struct pstore_record record = {

		.type = PSTORE_TYPE_PMSG,

		.size = count,

		.psi = psinfo,

	};

	struct pstore_record record;

	int ret;



	if (!count)

		return 0;



	pstore_record_init(&record, psinfo);

	record.type = PSTORE_TYPE_PMSG;

	record.size = count;



	/* check outside lock, page in any data. write_user also checks */

	if (!access_ok(VERIFY_READ, buf, count))

		return -EFAULT;