diff mbox

[ndctl] ndctl, sysfs: null terminate buffer on error

Message ID 152157867701.19898.6466178424544300544.stgit@dwillia2-desk3.amr.corp.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Dan Williams March 20, 2018, 8:44 p.m. UTC 
Terminate the buffer for sysfs_read_attr() users that might not
properly handle the error code.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 util/sysfs.c |    1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/util/sysfs.c b/util/sysfs.c
index e067f065a820..0440fd0f49a3 100644
--- a/util/sysfs.c
+++ b/util/sysfs.c
@@ -39,6 +39,7 @@  int __sysfs_read_attr(struct log_ctx *ctx, const char *path, char *buf)
 	n = read(fd, buf, SYSFS_ATTR_SIZE);
 	close(fd);
 	if (n < 0 || n >= SYSFS_ATTR_SIZE) {
+		buf[0] = 0;
 		log_dbg(ctx, "failed to read %s: %s\n", path, strerror(errno));
 		return -errno;
 	}