hfs-556.100.11.tar.gz

[apple/hfs.git] / fstyp_hfs / fstyp_hfs.c

diff --git a/fstyp_hfs/fstyp_hfs.c b/fstyp_hfs/fstyp_hfs.c
index 884f955cf3f2c7db8ff6bb0b8da988f7850d7913..102b7c585c86df693c1bb222cf74ea6ed91a89ef 100644 (file)
--- a/fstyp_hfs/fstyp_hfs.c
+++ b/fstyp_hfs/fstyp_hfs.c
@@ -105,13 +105,26 @@ rawname(char *name)
        static char     rawbuf[32];
        char           *dp;
 
+       (void) memset(rawbuf, 0, sizeof(rawbuf));
+
+       /* find the last "/" in a path, like /dev/disk2 */
        if ((dp = strrchr(name, '/')) == 0)
-               return (0);
+               return NULL;
+
+       /* temporarily replace the last "/" with a NUL */
        *dp = 0;
-       (void) strcpy(rawbuf, name);
+
+       /* copy name, with the "/" removed into 'rawbuf' */
+       (void) strlcpy(rawbuf, name, sizeof(rawbuf));
+
+       /* replace the "/" back */
        *dp = '/';
-       (void) strcat(rawbuf, "/r");
-       (void) strcat(rawbuf, &dp[1]);
+
+       /* Now add the "/r" to make it a raw device */ 
+       (void) strlcat(rawbuf, "/r", sizeof(rawbuf));
+
+       /* then copy the rest of the string (after the /) into place */
+       (void) strlcat(rawbuf, &dp[1], sizeof(rawbuf));
 
        return (rawbuf);
 }