diff options
Diffstat (limited to 'sbin/umount/umount.c')
| -rw-r--r-- | sbin/umount/umount.c | 86 |
1 files changed, 67 insertions, 19 deletions
diff --git a/sbin/umount/umount.c b/sbin/umount/umount.c index 9119c5be0da1..c15fd13d065a 100644 --- a/sbin/umount/umount.c +++ b/sbin/umount/umount.c @@ -29,20 +29,6 @@ * SUCH DAMAGE. */ -#ifndef lint -static const char copyright[] = -"@(#) Copyright (c) 1980, 1989, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)umount.c 8.8 (Berkeley) 5/8/95"; -#endif -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - #include <sys/param.h> #include <sys/mount.h> #include <sys/socket.h> @@ -64,10 +50,20 @@ static const char rcsid[] = #include "mounttab.h" +/* used by md_detach() */ +#include <sys/ioctl.h> +#include <sys/mdioctl.h> +#include <fcntl.h> +#include <paths.h> + +#define DEV_MD _PATH_DEV MD_NAME +#define DEV_MDCTL _PATH_DEV MDCTL_NAME + typedef enum { FIND, REMOVE, CHECKUNIQUE } dowhat; static struct addrinfo *nfshost_ai = NULL; -static int fflag, vflag; +static int dflag, fflag, vflag; +static int all; static char *nfshost; struct statfs *checkmntlist(char *); @@ -84,17 +80,18 @@ int checkname (char *, char **); int umountfs(struct statfs *sfs); void usage (void); int xdr_dir (XDR *, char *); +int md_detach(const char *); int main(int argc, char *argv[]) { - int all, errs, ch, mntsize, error, nfsforce, ret; + int errs, ch, mntsize, error, nfsforce, ret; char **typelist = NULL; struct statfs *mntbuf, *sfs; struct addrinfo hints; nfsforce = all = errs = 0; - while ((ch = getopt(argc, argv, "AaF:fh:Nnt:v")) != -1) + while ((ch = getopt(argc, argv, "AadF:fh:Nnt:v")) != -1) switch (ch) { case 'A': all = 2; @@ -102,6 +99,9 @@ main(int argc, char *argv[]) case 'a': all = 1; break; + case 'd': + dflag = 1; + break; case 'F': setfstab(optarg); break; @@ -469,6 +469,16 @@ umountfs(struct statfs *sfs) clnt_destroy(clp); } free(orignfsdirname); + + if (dflag) { + if (md_detach(sfs->f_mntfromname) == 0) { + if (vflag) + (void)printf("%s: detached\n", + sfs->f_mntfromname); + } else if (!all) + return (-1); + } + return (0); } @@ -651,7 +661,45 @@ usage(void) { (void)fprintf(stderr, "%s\n%s\n", - "usage: umount [-fNnv] special ... | node ... | fsid ...", - " umount -a | -A [-F fstab] [-fnv] [-h host] [-t type]"); + "usage: umount [-dfNnv] special ... | node ... | fsid ...", + " umount -a | -A [-F fstab] [-dfnv] [-h host] [-t type]"); exit(1); } + +int +md_detach(const char *device) +{ + struct md_ioctl mdio; + char *eptr; + int fd; + + if (strncmp(device, DEV_MD, sizeof(DEV_MD) - 1)) { + if (!all) + warnx("invalid md device: %s", device); + return (-1); + } + + memset(&mdio, 0, sizeof(mdio)); + mdio.md_version = MDIOVERSION; + mdio.md_options = fflag ? MD_FORCE : 0; + mdio.md_unit = strtoul(device + sizeof(DEV_MD) - 1, &eptr, 0); + if (mdio.md_unit == (unsigned)ULONG_MAX || eptr - device == sizeof(DEV_MD) - 1) { + warnx("invalid md device: %s", device); + return (-1); + } + + fd = open(DEV_MDCTL, O_RDWR, 0); + if (fd < 0) { + warn("%s", DEV_MDCTL); + return (-1); + } + + if (ioctl(fd, MDIOCDETACH, &mdio) < 0) { + warn("%s", DEV_MD); + close(fd); + return (-1); + } + + close(fd); + return (0); +} |