Allow setting blocksize to 0 (variable size); from Juergen Hannken-Illjes

<hannken@eis.cs.tu-bs.de> in NetBSD PR 3256

diff --git a/bin/mt/mt.c b/bin/mt/mt.c
index abb1fcc..194265e 100644 (file)
--- a/bin/mt/mt.c
+++ b/bin/mt/mt.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mt.c,v 1.15 1996/09/14 03:50:46 millert Exp $ */
+/*     $OpenBSD: mt.c,v 1.16 1997/03/29 21:23:10 tholo Exp $   */
 /*     $NetBSD: mt.c,v 1.14.2.1 1996/05/27 15:12:11 mrg Exp $  */
 
 /*
@@ -44,7 +44,7 @@ static char copyright[] =
 #if 0
 static char sccsid[] = "@(#)mt.c       8.2 (Berkeley) 6/6/93";
 #else
-static char rcsid[] = "$OpenBSD: mt.c,v 1.15 1996/09/14 03:50:46 millert Exp $";
+static char rcsid[] = "$OpenBSD: mt.c,v 1.16 1997/03/29 21:23:10 tholo Exp $";
 #endif
 #endif /* not lint */
 
@@ -75,22 +75,23 @@ struct commands {
        char *c_name;
        int c_code;
        int c_ronly;
+       int c_mincount;
 } com[] = {
-       { "blocksize",  MTSETBSIZ, 1 },
-       { "bsf",        MTBSF,  1 },
-       { "bsr",        MTBSR,  1 },
-       { "density",    MTSETDNSTY, 1 },
-       { "eof",        MTWEOF, 0 },
-       { "eom",        MTEOM,  1 },
-       { "erase",      MTERASE, 0 },
-       { "fsf",        MTFSF,  1 },
-       { "fsr",        MTFSR,  1 },
-       { "offline",    MTOFFL, 1 },
-       { "rewind",     MTREW,  1 },
-       { "rewoffl",    MTOFFL, 1 },
-       { "status",     MTNOP,  1 },
-       { "retension",  MTRETEN, 1 },
-       { "weof",       MTWEOF, 0 },
+       { "blocksize",  MTSETBSIZ,  1, 0 },
+       { "bsf",        MTBSF,      1, 1 },
+       { "bsr",        MTBSR,      1, 1 },
+       { "density",    MTSETDNSTY, 1, 1 },
+       { "eof",        MTWEOF,     0, 1 },
+       { "eom",        MTEOM,      1, 1 },
+       { "erase",      MTERASE,    0, 1 },
+       { "fsf",        MTFSF,      1, 1 },
+       { "fsr",        MTFSR,      1, 1 },
+       { "offline",    MTOFFL,     1, 1 },
+       { "rewind",     MTREW,      1, 1 },
+       { "rewoffl",    MTOFFL,     1, 1 },
+       { "status",     MTNOP,      1, 1 },
+       { "retension",  MTRETEN,    1, 1 },
+       { "weof",       MTWEOF,     0, 1 },
        { NULL }
 };
 #define COM_EJECT      9       /* element in the above array */
@@ -186,7 +187,7 @@ main(argc, argv)
                mt_com.mt_op = comp->c_code;
                if (*argv) {
                        mt_com.mt_count = strtol(*argv, &p, 10);
-                       if (mt_com.mt_count <= 0 || *p)
+                       if (mt_com.mt_count < comp->c_mincount || *p)
                                errx(2, "%s: illegal count", *argv);
                }
                else