Commit 83b8a3fb authored Jun 23, 2019 by Deepa Dinamani

pstore: fs superblock limits



Leaving granularity at 1ns because it is dependent on the specific
attached backing pstore module. ramoops has microsecond resolution.

Fix the readback of ramoops fractional timestamp microseconds,
which has incorrectly been reporting the value as nanoseconds.

Fixes: 3f8f80f0 ("pstore/ram: Read and write to the 'compressed' flag of pstore").

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Jeff Layton <jlayton@kernel.org>
Cc: anton@enomsg.org
Cc: ccross@android.com
Cc: keescook@chromium.org
Cc: tony.luck@intel.com

parent 8833293d

fs/pstore/ram.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -144,6 +144,7 @@ static int ramoops_read_kmsg_hdr(char buffer, struct timespec64 time,
		if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lld.%lu-%c\n%n",
		(time64_t *)&time->tv_sec, &time->tv_nsec, &data_type,
		&header_length) == 3) {
		time->tv_nsec *= 1000;
		if (data_type == 'C')
		*compressed = true;
		else
		@@ -151,6 +152,7 @@ static int ramoops_read_kmsg_hdr(char buffer, struct timespec64 time,
		} else if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lld.%lu\n%n",
		(time64_t *)&time->tv_sec, &time->tv_nsec,
		&header_length) == 2) {
		time->tv_nsec *= 1000;
		*compressed = false;
		} else {
		time->tv_sec = 0;

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