[src/trunk]: src/usr.sbin/mdconfig use opendisk()/dehumanize_number

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/740d04a6792e
branches:  trunk
changeset: 937433:740d04a6792e
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Aug 18 19:26:29 2020 +0000

description:
use opendisk()/dehumanize_number

diffstat:

 usr.sbin/mdconfig/Makefile   |   6 +++-
 usr.sbin/mdconfig/mdconfig.c |  66 +++++++++++++++++++++++--------------------
 2 files changed, 40 insertions(+), 32 deletions(-)

diffs (125 lines):

diff -r 45c722883382 -r 740d04a6792e usr.sbin/mdconfig/Makefile
--- a/usr.sbin/mdconfig/Makefile        Tue Aug 18 19:18:06 2020 +0000
+++ b/usr.sbin/mdconfig/Makefile        Tue Aug 18 19:26:29 2020 +0000
@@ -1,6 +1,10 @@
-#      $NetBSD: Makefile,v 1.2 1997/01/02 00:22:43 pk Exp $
+#      $NetBSD: Makefile,v 1.3 2020/08/18 19:26:29 christos Exp $
 
+WARNS?=6
 PROG=          mdconfig
 MAN=           mdconfig.8
 
+LDADD+=        -lutil
+DPADD+= ${LIBUTIL}
+
 .include <bsd.prog.mk>
diff -r 45c722883382 -r 740d04a6792e usr.sbin/mdconfig/mdconfig.c
--- a/usr.sbin/mdconfig/mdconfig.c      Tue Aug 18 19:18:06 2020 +0000
+++ b/usr.sbin/mdconfig/mdconfig.c      Tue Aug 18 19:26:29 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mdconfig.c,v 1.6 2018/01/23 21:06:25 sevan Exp $       */
+/*     $NetBSD: mdconfig.c,v 1.7 2020/08/18 19:26:29 christos Exp $    */
 
 /*
  * Copyright (c) 1995 Gordon W. Ross
@@ -27,7 +27,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: mdconfig.c,v 1.6 2018/01/23 21:06:25 sevan Exp $");
+__RCSID("$NetBSD: mdconfig.c,v 1.7 2020/08/18 19:26:29 christos Exp $");
 #endif
 
 /*
@@ -37,58 +37,62 @@
  * (But this design allows any filesystem format!)
  */
 
-#include <sys/types.h>
+#include <sys/errno.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/param.h>
+#include <sys/types.h>
 
 #include <dev/md.h>
 
+#include <assert.h>
+#include <err.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <util.h>
 
 int
 main(int argc, char *argv[])
 {
        struct md_conf md;
-       size_t nblks;
+       char fname[MAXPATHLEN];
+       int64_t num;
+       size_t blks, bytes;
        int fd;
 
-       if (argc <= 2) {
-               fprintf(stderr, "usage: mdconfig <device> <%d-byte-blocks>\n",
-                               DEV_BSIZE);
-               exit(1);
+       setprogname(argv[0]);
+
+       if (argc != 3) {
+               (void)fprintf(stderr, "Usage: %s <device> <%d-byte-blocks>\n",
+                   getprogname(), DEV_BSIZE);
+               return EXIT_FAILURE;
        }
 
-       nblks = (size_t)strtoul(argv[2], NULL, 0);
-       if (nblks == 0) {
-               fprintf(stderr, "invalid number of blocks\n");
-               exit(1);
-       }
-       md.md_size = nblks << DEV_BSHIFT;
+       if (dehumanize_number(argv[2], &num) == -1)
+               goto bad_num;
 
-       fd = open(argv[1], O_RDWR, 0);
-       if (fd < 0) {
-               perror(argv[1]);
-               exit(1);
+       blks = (size_t)num;
+       bytes = blks << DEV_BSHIFT;
+       if (num <= 0 || bytes >> DEV_BSHIFT != blks) {
+bad_num:       err(EXIT_FAILURE, "blocks: `%s'", argv[2]);
        }
+       md.md_size = bytes;
 
-       md.md_addr = mmap(NULL, md.md_size,
-                               PROT_READ | PROT_WRITE,
-                               MAP_ANON | MAP_PRIVATE,
-                               -1, 0);
-       if (md.md_addr == MAP_FAILED) {
-               perror("mmap");
-               exit(1);
-       }
+       fd = opendisk(argv[1], O_RDWR, fname, sizeof(fname), 0);
+       if (fd == -1)
+               err(EXIT_FAILURE, "Can't open `%s'", argv[1]);
+
+       md.md_addr = mmap(NULL, md.md_size, PROT_READ | PROT_WRITE,
+           MAP_ANON | MAP_PRIVATE, -1, 0);
+       if (md.md_addr == MAP_FAILED)
+               err(EXIT_FAILURE, "mmap");
 
        /* Become server! */
        md.md_type = MD_UMEM_SERVER;
-       if (ioctl(fd, MD_SETCONF, &md)) {
-               perror("ioctl");
-               exit(1);
-       }
+       if (ioctl(fd, MD_SETCONF, &md) == -1)
+               err(EXIT_FAILURE, "ioctl");
 
-       exit(0);
+       return EXIT_SUCCESS;
 }