diff options
Diffstat (limited to 'sbin/mount_udf/mount_udf.c')
| -rw-r--r-- | sbin/mount_udf/mount_udf.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/sbin/mount_udf/mount_udf.c b/sbin/mount_udf/mount_udf.c index fca2e122101..813e1e5ca73 100644 --- a/sbin/mount_udf/mount_udf.c +++ b/sbin/mount_udf/mount_udf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: mount_udf.c,v 1.2 2005/04/08 20:09:38 jaredy Exp $ */ +/* $OpenBSD: mount_udf.c,v 1.3 2006/07/11 16:24:09 pedro Exp $ */ /* * Copyright (c) 2005 Pedro Martelletto <pedro@openbsd.org> @@ -19,8 +19,12 @@ #include <sys/param.h> #include <sys/mount.h> +#include <sys/ioctl.h> +#include <sys/cdio.h> #include <err.h> +#include <fcntl.h> +#include <unistd.h> #include <stdlib.h> #include <stdio.h> @@ -38,6 +42,30 @@ usage(void) exit(EXIT_FAILURE); } +/* Find out media's last block by looking at the LBA of the lead-out track. */ +u_int32_t +lastblock(char *dev) +{ + int fd, error; + struct ioc_read_toc_entry t; + struct cd_toc_entry te; + + fd = open(dev, O_RDONLY, 0); + if (fd < 0) + err(1, "open"); + + t.address_format = CD_LBA_FORMAT; + t.starting_track = CD_TRACK_LEADOUT; + t.data_len = sizeof(struct cd_toc_entry); + t.data = &te; + + error = ioctl(fd, CDIOREADTOCENTRIES, &t); + + close(fd); + + return (error == -1 ? 0 : te.addr.lba); +} + int main(int argc, char **argv) { @@ -61,6 +89,7 @@ main(int argc, char **argv) usage(); args.fspec = argv[0]; + args.lastblock = lastblock(argv[0]); if (realpath(argv[1], node) == NULL) err(1, "realpath %s", argv[1]); |