Libguestfs - Apr 2018 - [PATCH 4/4] daemon: simplify string allocation

When creating an helper string for do_aug_match(), use a simpler
asprintf() with manual free(), since the code block is small enough.

This slightly helps static code analyzers.
---
 daemon/augeas.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/daemon/augeas.c b/daemon/augeas.c
index bd54c4849..453251337 100644
--- a/daemon/augeas.c
+++ b/daemon/augeas.c
@@ -420,17 +420,15 @@ do_aug_ls (const char *path)
   if (STREQ (path, "/"))
     matches = do_aug_match ("/*");
   else {
-    CLEANUP_FREE char *buf = NULL;
+    char *buf = NULL;
 
-    len += 3;			/* / * + terminating \0 */
-    buf = malloc (len);
-    if (buf == NULL) {
-      reply_with_perror ("malloc");
+    if (asprintf (&buf, "%s/*", path) == -1) {
+      reply_with_perror ("asprintf");
       return NULL;
     }
 
-    snprintf (buf, len, "%s/*", path);
     matches = do_aug_match (buf);
+    free (buf);
   }
 
   if (matches == NULL)
-- 
2.14.3

ACK series.

Were these found by Coverity?  If so then we usually mention
that in the commit message.

Thanks,

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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On Mon, Apr 30, 2018 at 12:20:51PM +0100, Richard W.M. Jones
wrote:
> 
> ACK series.
I pushed these in order to get them into the next 1.39.4 release.

Thanks,

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-top is 'top' for virtual machines.  Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top