Re: [PATCH] Monitor: triggers core dump when stat2devnm return NULL

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Hi, Jes;
  I just wanted to ping and see if this could get a review:


On 02/14/2017 01:31 PM, Zhilong Liu wrote:
     ensure that the devnm should be a block device when uses
     --wait parameter, such as the 'f' and 'd' type file would
     be triggered core dumped.

Signed-off-by: Zhilong Liu <zlliu@xxxxxxxx>

diff --git a/Monitor.c b/Monitor.c
index 802a9d9..1900db3 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -1002,6 +1002,10 @@ int Wait(char *dev)
  			strerror(errno));
  		return 2;
  	}
+	if ((S_IFMT & stb.st_mode) != S_IFBLK) {
+		pr_err("%s is not a block device.\n", dev);
+		return 2;
+	}
  	strcpy(devnm, stat2devnm(&stb));
while(1) {
diff --git a/lib.c b/lib.c
index b640634..7116298 100644
--- a/lib.c
+++ b/lib.c
@@ -89,9 +89,6 @@ char *devid2kname(int devid)
char *stat2kname(struct stat *st)
  {
-	if ((S_IFMT & st->st_mode) != S_IFBLK)
-		return NULL;
-
  	return devid2kname(st->st_rdev);
  }

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