385 lines
9.0 KiB
C
385 lines
9.0 KiB
C
/*-
|
|
* Copyright (c) 1980, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1989, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)umount.c 8.8 (Berkeley) 5/8/95";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
|
|
#include <netdb.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/pmap_clnt.h>
|
|
#include <rpc/pmap_prot.h>
|
|
#include <nfs/rpcv2.h>
|
|
|
|
#include <err.h>
|
|
#include <fstab.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
typedef enum { MNTON, MNTFROM } mntwhat;
|
|
|
|
int fake, fflag, vflag;
|
|
char *nfshost;
|
|
|
|
int checkvfsname __P((const char *, char **));
|
|
char *getmntname __P((char *, mntwhat, char **));
|
|
char **makevfslist __P((char *));
|
|
int selected __P((int));
|
|
int namematch __P((struct hostent *));
|
|
int umountall __P((char **));
|
|
int umountfs __P((char *, char **));
|
|
void usage __P((void));
|
|
int xdr_dir __P((XDR *, char *));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int all, ch, errs, mnts;
|
|
char **typelist = NULL;
|
|
struct statfs *mntbuf;
|
|
|
|
/* Start disks transferring immediately. */
|
|
sync();
|
|
|
|
all = 0;
|
|
while ((ch = getopt(argc, argv, "AaFfh:t:v")) != -1)
|
|
switch (ch) {
|
|
case 'A':
|
|
all = 2;
|
|
break;
|
|
case 'a':
|
|
all = 1;
|
|
break;
|
|
case 'F':
|
|
fake = 1;
|
|
break;
|
|
case 'f':
|
|
fflag = MNT_FORCE;
|
|
break;
|
|
case 'h': /* -h implies -A. */
|
|
all = 2;
|
|
nfshost = optarg;
|
|
break;
|
|
case 't':
|
|
if (typelist != NULL)
|
|
errx(1, "only one -t option may be specified.");
|
|
typelist = makevfslist(optarg);
|
|
break;
|
|
case 'v':
|
|
vflag = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
/* NOTREACHED */
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc == 0 && !all || argc != 0 && all)
|
|
usage();
|
|
|
|
/* -h implies "-t nfs" if no -t flag. */
|
|
if ((nfshost != NULL) && (typelist == NULL))
|
|
typelist = makevfslist("nfs");
|
|
|
|
switch (all) {
|
|
case 2:
|
|
if ((mnts = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) {
|
|
warn("getmntinfo");
|
|
errs = 1;
|
|
break;
|
|
}
|
|
for (errs = 0, mnts--; mnts > 0; mnts--) {
|
|
if (checkvfsname(mntbuf[mnts].f_fstypename, typelist))
|
|
continue;
|
|
if (umountfs(mntbuf[mnts].f_mntonname, typelist) != 0)
|
|
errs = 1;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (setfsent() == 0)
|
|
err(1, "%s", _PATH_FSTAB);
|
|
errs = umountall(typelist);
|
|
break;
|
|
case 0:
|
|
for (errs = 0; *argv != NULL; ++argv)
|
|
if (umountfs(*argv, typelist) != 0)
|
|
errs = 1;
|
|
break;
|
|
}
|
|
exit(errs);
|
|
}
|
|
|
|
int
|
|
umountall(typelist)
|
|
char **typelist;
|
|
{
|
|
struct fstab *fs;
|
|
int rval, type;
|
|
char *cp;
|
|
struct vfsconf vfc;
|
|
|
|
while ((fs = getfsent()) != NULL) {
|
|
/* Ignore the root. */
|
|
if (strcmp(fs->fs_file, "/") == 0)
|
|
continue;
|
|
/*
|
|
* !!!
|
|
* Historic practice: ignore unknown FSTAB_* fields.
|
|
*/
|
|
if (strcmp(fs->fs_type, FSTAB_RW) &&
|
|
strcmp(fs->fs_type, FSTAB_RO) &&
|
|
strcmp(fs->fs_type, FSTAB_RQ))
|
|
continue;
|
|
/* If an unknown file system type, complain. */
|
|
if (getvfsbyname(fs->fs_vfstype, &vfc) < 0) {
|
|
warnx("%s: unknown mount type", fs->fs_vfstype);
|
|
continue;
|
|
}
|
|
if (checkvfsname(fs->fs_vfstype, typelist))
|
|
continue;
|
|
|
|
/*
|
|
* We want to unmount the file systems in the reverse order
|
|
* that they were mounted. So, we save off the file name
|
|
* in some allocated memory, and then call recursively.
|
|
*/
|
|
if ((cp = malloc((size_t)strlen(fs->fs_file) + 1)) == NULL)
|
|
err(1, NULL);
|
|
(void)strcpy(cp, fs->fs_file);
|
|
rval = umountall(typelist);
|
|
return (umountfs(cp, typelist) || rval);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
umountfs(name, typelist)
|
|
char *name;
|
|
char **typelist;
|
|
{
|
|
enum clnt_stat clnt_stat;
|
|
struct hostent *hp;
|
|
struct sockaddr_in saddr;
|
|
struct stat sb;
|
|
struct timeval pertry, try;
|
|
CLIENT *clp;
|
|
int so;
|
|
char *type, *delimp, *hostp, *mntpt, rname[MAXPATHLEN];
|
|
|
|
if (realpath(name, rname) == NULL) {
|
|
/* Continue and let the system call check it... */
|
|
strcpy(rname, name);
|
|
}
|
|
|
|
name = rname;
|
|
|
|
if (stat(name, &sb) < 0) {
|
|
if (((mntpt = getmntname(name, MNTFROM, &type)) == NULL) &&
|
|
((mntpt = getmntname(name, MNTON, &type)) == NULL)) {
|
|
warnx("%s: not currently mounted", name);
|
|
return (1);
|
|
}
|
|
} else if (S_ISBLK(sb.st_mode)) {
|
|
if ((mntpt = getmntname(name, MNTON, &type)) == NULL) {
|
|
warnx("%s: not currently mounted", name);
|
|
return (1);
|
|
}
|
|
} else if (S_ISDIR(sb.st_mode)) {
|
|
mntpt = name;
|
|
if ((name = getmntname(mntpt, MNTFROM, &type)) == NULL) {
|
|
warnx("%s: not currently mounted", mntpt);
|
|
return (1);
|
|
}
|
|
} else {
|
|
warnx("%s: not a directory or special device", name);
|
|
return (1);
|
|
}
|
|
|
|
if (checkvfsname(type, typelist))
|
|
return (1);
|
|
|
|
hp = NULL;
|
|
if (!strcmp(type, "nfs")) {
|
|
if ((delimp = strchr(name, '@')) != NULL) {
|
|
hostp = delimp + 1;
|
|
*delimp = '\0';
|
|
hp = gethostbyname(hostp);
|
|
*delimp = '@';
|
|
} else if ((delimp = strchr(name, ':')) != NULL) {
|
|
*delimp = '\0';
|
|
hostp = name;
|
|
hp = gethostbyname(hostp);
|
|
name = delimp + 1;
|
|
*delimp = ':';
|
|
}
|
|
}
|
|
|
|
if (!namematch(hp))
|
|
return (1);
|
|
|
|
if (vflag)
|
|
(void)printf("%s: unmount from %s\n", name, mntpt);
|
|
if (fake)
|
|
return (0);
|
|
|
|
if (unmount(mntpt, fflag) < 0) {
|
|
warn("%s", mntpt);
|
|
return (1);
|
|
}
|
|
|
|
if ((hp != NULL) && !(fflag & MNT_FORCE)) {
|
|
*delimp = '\0';
|
|
memset(&saddr, 0, sizeof(saddr));
|
|
saddr.sin_family = AF_INET;
|
|
saddr.sin_port = 0;
|
|
memmove(&saddr.sin_addr, hp->h_addr, hp->h_length);
|
|
pertry.tv_sec = 3;
|
|
pertry.tv_usec = 0;
|
|
so = RPC_ANYSOCK;
|
|
if ((clp = clntudp_create(&saddr,
|
|
RPCPROG_MNT, RPCMNT_VER1, pertry, &so)) == NULL) {
|
|
clnt_pcreateerror("Cannot MNT PRC");
|
|
return (1);
|
|
}
|
|
clp->cl_auth = authunix_create_default();
|
|
try.tv_sec = 20;
|
|
try.tv_usec = 0;
|
|
clnt_stat = clnt_call(clp,
|
|
RPCMNT_UMOUNT, xdr_dir, name, xdr_void, (caddr_t)0, try);
|
|
if (clnt_stat != RPC_SUCCESS) {
|
|
clnt_perror(clp, "Bad MNT RPC");
|
|
return (1);
|
|
}
|
|
auth_destroy(clp->cl_auth);
|
|
clnt_destroy(clp);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
char *
|
|
getmntname(name, what, type)
|
|
char *name;
|
|
mntwhat what;
|
|
char **type;
|
|
{
|
|
static struct statfs *mntbuf;
|
|
static int mntsize;
|
|
int i;
|
|
|
|
if (mntbuf == NULL &&
|
|
(mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) {
|
|
warn("getmntinfo");
|
|
return (NULL);
|
|
}
|
|
for (i = 0; i < mntsize; i++) {
|
|
if ((what == MNTON) && !strcmp(mntbuf[i].f_mntfromname, name)) {
|
|
if (type)
|
|
*type = mntbuf[i].f_fstypename;
|
|
return (mntbuf[i].f_mntonname);
|
|
}
|
|
if ((what == MNTFROM) && !strcmp(mntbuf[i].f_mntonname, name)) {
|
|
if (type)
|
|
*type = mntbuf[i].f_fstypename;
|
|
return (mntbuf[i].f_mntfromname);
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
namematch(hp)
|
|
struct hostent *hp;
|
|
{
|
|
char *cp, **np;
|
|
|
|
if ((hp == NULL) || (nfshost == NULL))
|
|
return (1);
|
|
|
|
if (strcasecmp(nfshost, hp->h_name) == 0)
|
|
return (1);
|
|
|
|
if ((cp = strchr(hp->h_name, '.')) != NULL) {
|
|
*cp = '\0';
|
|
if (strcasecmp(nfshost, hp->h_name) == 0)
|
|
return (1);
|
|
}
|
|
for (np = hp->h_aliases; *np; np++) {
|
|
if (strcasecmp(nfshost, *np) == 0)
|
|
return (1);
|
|
if ((cp = strchr(*np, '.')) != NULL) {
|
|
*cp = '\0';
|
|
if (strcasecmp(nfshost, *np) == 0)
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* xdr routines for mount rpc's
|
|
*/
|
|
int
|
|
xdr_dir(xdrsp, dirp)
|
|
XDR *xdrsp;
|
|
char *dirp;
|
|
{
|
|
return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "%s\n%s\n",
|
|
"usage: umount [-fv] special | node",
|
|
" umount -a | -A [-fv] [-h host] [-t type]");
|
|
exit(1);
|
|
}
|