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-rw-r--r--multiload/linux-proc.c31
1 files changed, 19 insertions, 12 deletions
diff --git a/multiload/linux-proc.c b/multiload/linux-proc.c
index 13ebc5ff..d2149229 100644
--- a/multiload/linux-proc.c
+++ b/multiload/linux-proc.c
@@ -285,21 +285,28 @@ is_net_device_virtual(char *device)
* /sys/class/net/name-of-dev/ . This second method is more complex
* but more reliable.
*/
- char path[PATH_MAX];
+ gboolean ret = FALSE;
+ char *path = malloc (strlen (device) + strlen ("/sys/class/net//device") + 1);
- /* Check if /sys/class/net/name-of-dev/ exists (may be old linux kernel
- * or not linux at all). */
- if (sprintf(path, "/sys/class/net/%s", device) < 0)
- return FALSE;
- if (access(path, F_OK) != 0)
- return FALSE; /* unknown */
-
- if (sprintf(path, "/sys/class/net/%s/device", device) < 0)
+ if (path == NULL)
return FALSE;
- if (access(path, F_OK) != 0)
- return TRUE;
- return FALSE;
+ /* Check if /sys/class/net/name-of-dev/ exists (may be old linux kernel
+ * or not linux at all). */
+ do {
+ if (sprintf(path, "/sys/class/net/%s", device) < 0)
+ break;
+ if (access(path, F_OK) != 0)
+ break; /* unknown */
+
+ if (sprintf(path, "/sys/class/net/%s/device", device) < 0)
+ break;
+ if (access(path, F_OK) != 0)
+ ret = TRUE;
+ } while (0);
+
+ free (path);
+ return ret;
}
void