135 lines
2.5 KiB
C
135 lines
2.5 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <sys/mount.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "grabmntinfo.h"
|
|
#include "util.h"
|
|
|
|
struct {
|
|
const char *opt;
|
|
const char *notopt;
|
|
unsigned long v;
|
|
} optnames[] = {
|
|
{ "remount", NULL, MS_REMOUNT },
|
|
{ "ro", "rw", MS_RDONLY },
|
|
{ "sync", "async", MS_SYNCHRONOUS },
|
|
{ "dirsync", NULL, MS_DIRSYNC },
|
|
{ "nodev", "dev", MS_NODEV },
|
|
{ "noatime", "atime", MS_NOATIME },
|
|
{ "nodiratime", "diratime", MS_NODIRATIME },
|
|
{ "noexec", "exec", MS_NOEXEC },
|
|
{ "nosuid", "suid", MS_NOSUID },
|
|
{ "mand", "nomand", MS_MANDLOCK },
|
|
{ "relatime", "norelatime", MS_RELATIME },
|
|
{ NULL, NULL, 0 }
|
|
};
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: %s [-BMRd] [-t fstype] [-o options] source target\n",
|
|
argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int i;
|
|
unsigned long flags = 0;
|
|
char *types = NULL, *opt = NULL, *p;
|
|
const char *source;
|
|
const char *target;
|
|
struct stat st1, st2;
|
|
int validopt;
|
|
void *data = NULL;
|
|
struct mntinfo *minfo = NULL;
|
|
int siz;
|
|
|
|
ARGBEGIN {
|
|
case 'B':
|
|
flags |= MS_BIND;
|
|
break;
|
|
case 'M':
|
|
flags |= MS_MOVE;
|
|
break;
|
|
case 'R':
|
|
flags |= MS_REC;
|
|
break;
|
|
case 'd':
|
|
data = EARGF(usage());
|
|
break;
|
|
case 'o':
|
|
opt = EARGF(usage());
|
|
p = strtok(opt, ",");
|
|
while (p) {
|
|
validopt = 0;
|
|
for (i = 0; optnames[i].v; i++) {
|
|
if (optnames[i].opt) {
|
|
if (!strcmp(p, optnames[i].opt)) {
|
|
flags |= optnames[i].v;
|
|
validopt = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (optnames[i].notopt) {
|
|
if (!strcmp(p, optnames[i].notopt)) {
|
|
flags &= ~optnames[i].v;
|
|
validopt = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!validopt)
|
|
break;
|
|
p = strtok(NULL, ",");
|
|
}
|
|
if (!validopt)
|
|
enprintf(1, "unknown option: %s\n", p);
|
|
break;
|
|
case 't':
|
|
types = EARGF(usage());
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
if (argc < 1)
|
|
usage();
|
|
|
|
source = argv[0];
|
|
target = argv[1];
|
|
|
|
if (!target) {
|
|
target = source;
|
|
source = NULL;
|
|
if (stat(target, &st1) < 0)
|
|
eprintf("stat %s:", target);
|
|
siz = grabmntinfo(&minfo);
|
|
if (!siz)
|
|
eprintf("grabmntinfo:");
|
|
for (i = 0; i < siz; i++) {
|
|
if (stat(minfo[i].mntdir, &st2) < 0)
|
|
eprintf("stat %s:", minfo[i].mntdir);
|
|
if (st1.st_dev == st2.st_dev &&
|
|
st1.st_ino == st2.st_ino) {
|
|
source = minfo[i].fsname;
|
|
break;
|
|
}
|
|
}
|
|
if (!source)
|
|
enprintf(1, "can't find %s mountpoint\n",
|
|
target);
|
|
}
|
|
|
|
if (mount(source, target, types, flags, data) < 0)
|
|
eprintf("mount:");
|
|
|
|
free(minfo);
|
|
|
|
return 0;
|
|
}
|