static int resolve_mount_spec(char **fsname)
{
char *tmp = NULL;
if (!strncmp(*fsname, "UUID=", 5))
tmp = mount_get_devname(*fsname + 5, MOUNT_SPEC_UUID);
else if (!strncmp(*fsname, "LABEL=", 6))
tmp = mount_get_devname(*fsname + 6, MOUNT_SPEC_LABEL);
if (tmp) {
*fsname = tmp;
return 1;
}
return 0;
}
static int
do_swapoff(const char *orig_special, int quiet) {
const char *special;
if (verbose)
printf(_("%s on %s\n"), progname, orig_special);
special = mount_get_devname(orig_special);
if (!special)
return cannot_find(orig_special);
if (swapoff(special) == 0)
return 0; /* success */
if (errno == EPERM) {
fprintf(stderr, _("Not superuser.\n"));
exit(1); /* any further swapoffs will also fail */
}
if (!quiet || errno == ENOMEM) {
fprintf(stderr, "%s: %s: %s\n",
progname, orig_special, strerror(errno));
}
return -1;
}
static int
swapon_all(void) {
FILE *fp;
struct mntent *fstab;
int status = 0;
read_proc_swaps();
fp = setmntent(_PATH_FSTAB, "r");
if (fp == NULL) {
int errsv = errno;
fprintf(stderr, _("%s: cannot open %s: %s\n"),
progname, _PATH_FSTAB, strerror(errsv));
exit(2);
}
while ((fstab = getmntent(fp)) != NULL) {
const char *orig_special = fstab->mnt_fsname;
const char *special;
int skip = 0;
int pri = priority;
if (!streq(fstab->mnt_type, MNTTYPE_SWAP))
continue;
special = mount_get_devname(orig_special);
if (!special)
continue;
if (!is_in_proc_swaps(special) &&
(!ifexists || !access(special, R_OK))) {
/* parse mount options; */
char *opt, *opts = strdup(fstab->mnt_opts);
for (opt = strtok(opts, ","); opt != NULL;
opt = strtok(NULL, ",")) {
if (strncmp(opt, "pri=", 4) == 0)
pri = atoi(opt+4);
if (strcmp(opt, "noauto") == 0)
skip = 1;
}
if (!skip)
status |= do_swapon(special, pri);
}
}
fclose(fp);
return status;
}
static int
do_swapon(const char *orig_special, int prio) {
int status;
struct stat st;
const char *special;
if (verbose)
printf(_("%s on %s\n"), progname, orig_special);
special = mount_get_devname(orig_special);
if (!special) {
fprintf(stderr, _("%s: cannot find the device for %s\n"),
progname, orig_special);
return -1;
}
if (stat(special, &st) < 0) {
int errsv = errno;
fprintf(stderr, _("%s: cannot stat %s: %s\n"),
progname, special, strerror(errsv));
return -1;
}
/* people generally dislike this warning - now it is printed
only when `verbose' is set */
if (verbose) {
int permMask = (S_ISBLK(st.st_mode) ? 07007 : 07077);
if ((st.st_mode & permMask) != 0) {
fprintf(stderr, _("%s: warning: %s has "
"insecure permissions %04o, "
"%04o suggested\n"),
progname, special, st.st_mode & 07777,
~permMask & 0666);
}
}
/* test for holes by LBT */
if (S_ISREG(st.st_mode)) {
if (st.st_blocks * 512 < st.st_size) {
fprintf(stderr,
_("%s: Skipping file %s - it appears "
"to have holes.\n"),
progname, special);
return -1;
}
}
#ifdef SWAPON_NEEDS_TWO_ARGS
{
int flags = 0;
#ifdef SWAP_FLAG_PREFER
if (prio >= 0) {
if (prio > SWAP_FLAG_PRIO_MASK)
prio = SWAP_FLAG_PRIO_MASK;
flags = SWAP_FLAG_PREFER
| ((prio & SWAP_FLAG_PRIO_MASK)
<< SWAP_FLAG_PRIO_SHIFT);
}
#endif
status = swapon(special, flags);
}
#else
status = swapon(special);
#endif
if (status < 0) {
int errsv = errno;
fprintf(stderr, "%s: %s: %s\n",
progname, orig_special, strerror(errsv));
}
return status;
}
