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use opendisk()/dehumanize_number

This commit is contained in:
christos 2020-08-18 19:26:29 +00:00
parent 9630bba2c9
commit 0c510515ef
2 changed files with 40 additions and 32 deletions
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6
usr.sbin/mdconfig/Makefile
View File

@ -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>

66
usr.sbin/mdconfig/mdconfig.c
View File

@ -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 $");
#endif
/*
@ -37,58 +37,62 @@ __RCSID("$NetBSD: mdconfig.c,v 1.6 2018/01/23 21:06:25 sevan Exp $");
* (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;
}