sbase

commit 1f0f1dd320d4b37ce1c6bce49e64b7f4c797b45a
parent b6b977f63d08bd646a59158a4de2f1a28240a1f1
Author: FRIGN <dev@frign.de>
Date:   Sat, 21 Mar 2015 14:04:49 +0100

Show usage() when filtermode is given for tar-creation

We only allow decompression for extraction. Thus, it may be confusing
for the user and break scripts silently when the j- or z-flag are given
even though this is not supported.

Diffstat:
M
tar.c
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tar.c b/tar.c
@@ -52,7 +52,7 @@ static ino_t tarinode;
 static dev_t tardev;
 
 static int  mflag;
-static char filtermode;
+static char filtermode = '\0';
 
 static FILE *
 decomp(FILE *fp)
@@ -348,6 +348,8 @@ main(int argc, char *argv[])
 
 	if (!mode || argc != (mode == 'c'))
 		usage();
+	if (mode == 'c' && filtermode)
+		usage();
 
 	switch (mode) {
 	case 'c':