int main(int argc, char **argv)
{
int beforec, afterc, i;
char *table, **before, **after;
struct rlimit rl;
getrlimit(RLIMIT_NOFILE, &rl);
for (i = rl.rlim_cur; i > 2; i--)
close(i);
whoami = ((whoami = strrchr(argv[0], '/')) ? whoami+1 : argv[0]);
table = argv[1];
beforec = atoi(argv[2]);
before = &argv[4];
afterc = atoi(argv[3]);
after = &argv[4 + beforec];
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
strcpy(tbl_buf, table);
strcat(tbl_buf, " (");
for (i = 0; i < beforec; i++)
{
if (i > 0)
strcat(tbl_buf, ",");
strcat(tbl_buf, before[i]);
}
strcat(tbl_buf, ")->(");
for (i = 0; i < afterc; i++)
{
if (i > 0)
strcat(tbl_buf, ",");
strcat(tbl_buf, after[i]);
}
strcat(tbl_buf, ")");
initialize_sms_error_table();
initialize_krb_error_table();
if (!strcmp(table, "users"))
do_user(before, beforec, after, afterc);
else if (!strcmp(table, "list"))
do_list(before, beforec, after, afterc);
else if (!strcmp(table, "imembers"))
do_member(before, beforec, after, afterc);
else if (!strcmp(table, "filesys"))
do_filesys(before, beforec, after, afterc);
else if (!strcmp(table, "quota"))
do_quota(before, beforec, after, afterc);
exit(0);
}
int restore_line(const char *filename,uint64_t lv,char *line) {
char *ptr;
uint32_t ts;
int status;
char* errormsgs[]={ ERROR_STRINGS };
status = ERROR_MISMATCH;
ptr = line;
EAT(ptr,filename,lv,':');
EAT(ptr,filename,lv,' ');
GETU32(ts,ptr);
EAT(ptr,filename,lv,'|');
switch (*ptr) {
case 'A':
if (strncmp(ptr,"ACCESS",6)==0) {
status = do_access(filename,lv,ts,ptr+6);
} else if (strncmp(ptr,"ATTR",4)==0) {
status = do_attr(filename,lv,ts,ptr+4);
} else if (strncmp(ptr,"APPEND",6)==0) {
status = do_append(filename,lv,ts,ptr+6);
} else if (strncmp(ptr,"ACQUIRE",7)==0) {
status = do_acquire(filename,lv,ts,ptr+7);
} else if (strncmp(ptr,"AQUIRE",6)==0) {
status = do_acquire(filename,lv,ts,ptr+6);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'C':
if (strncmp(ptr,"CREATE",6)==0) {
status = do_create(filename,lv,ts,ptr+6);
} else if (strncmp(ptr,"CUSTOMER",8)==0) { // deprecated
status = do_session(filename,lv,ts,ptr+8);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'E':
if (strncmp(ptr,"EMPTYTRASH",10)==0) {
status = do_emptytrash(filename,lv,ts,ptr+10);
} else if (strncmp(ptr,"EMPTYRESERVED",13)==0) {
status = do_emptyreserved(filename,lv,ts,ptr+13);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'F':
if (strncmp(ptr,"FREEINODES",10)==0) {
status = do_freeinodes(filename,lv,ts,ptr+10);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'I':
if (strncmp(ptr,"INCVERSION",10)==0) {
status = do_incversion(filename,lv,ts,ptr+10);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'L':
if (strncmp(ptr,"LENGTH",6)==0) {
status = do_length(filename,lv,ts,ptr+6);
} else if (strncmp(ptr,"LINK",4)==0) {
status = do_link(filename,lv,ts,ptr+4);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'M':
if (strncmp(ptr,"MOVE",4)==0) {
status = do_move(filename,lv,ts,ptr+4);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'P':
if (strncmp(ptr,"PURGE",5)==0) {
status = do_purge(filename,lv,ts,ptr+5);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'Q':
if (strncmp(ptr,"QUOTA",5)==0) {
status = do_quota(filename,lv,ts,ptr+5);
}
break;
case 'R':
if (strncmp(ptr,"RELEASE",7)==0) {
status = do_release(filename,lv,ts,ptr+7);
} else if (strncmp(ptr,"REPAIR",6)==0) {
status = do_repair(filename,lv,ts,ptr+6);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'S':
if (strncmp(ptr,"SETEATTR",8)==0) {
status = do_seteattr(filename,lv,ts,ptr+8);
} else if (strncmp(ptr,"SETGOAL",7)==0) {
status = do_setgoal(filename,lv,ts,ptr+7);
} else if (strncmp(ptr,"SETPATH",7)==0) {
status = do_setpath(filename,lv,ts,ptr+7);
} else if (strncmp(ptr,"SETTRASHTIME",12)==0) {
status = do_settrashtime(filename,lv,ts,ptr+12);
} else if (strncmp(ptr,"SETXATTR",8)==0) {
status = do_setxattr(filename,lv,ts,ptr+8);
} else if (strncmp(ptr,"SNAPSHOT",8)==0) {
status = do_snapshot(filename,lv,ts,ptr+8);
} else if (strncmp(ptr,"SYMLINK",7)==0) {
status = do_symlink(filename,lv,ts,ptr+7);
} else if (strncmp(ptr,"SESSION",7)==0) {
status = do_session(filename,lv,ts,ptr+7);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'T':
if (strncmp(ptr,"TRUNC",5)==0) {
status = do_trunc(filename,lv,ts,ptr+5);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'U':
if (strncmp(ptr,"UNLINK",6)==0) {
status = do_unlink(filename,lv,ts,ptr+6);
} else if (strncmp(ptr,"UNDEL",5)==0) {
status = do_undel(filename,lv,ts,ptr+5);
} else if (strncmp(ptr,"UNLOCK",6)==0) {
status = do_unlock(filename,lv,ts,ptr+6);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
case 'W':
if (strncmp(ptr,"WRITE",5)==0) {
status = do_write(filename,lv,ts,ptr+5);
} else {
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
break;
default:
printf("%s:%"PRIu64": unknown entry '%s'\n",filename,lv,ptr);
}
if (status>STATUS_OK) {
printf("%s:%"PRIu64": error: %d (%s)\n",filename,lv,status,errormsgs[status]);
}
return status;
}
/* If tmp_mount_point is non-null, mount the filesystem there. This is for the
* tmp mount we do to check the user password
* If multiple fstab entries are to be mounted on "n_name", it will try to mount each one
* in turn, and stop on 1st success, or no more match.
*/
int fs_mgr_do_mount(struct fstab *fstab, char *n_name, char *n_blk_device,
char *tmp_mount_point)
{
int i = 0;
int ret = FS_MGR_DOMNT_FAILED;
int mount_errors = 0;
int first_mount_errno = 0;
char *m;
if (!fstab) {
return ret;
}
for (i = 0; i < fstab->num_entries; i++) {
if (!fs_match(fstab->recs[i].mount_point, n_name)) {
continue;
}
/* We found our match */
/* If this swap or a raw partition, report an error */
if (!strcmp(fstab->recs[i].fs_type, "swap") ||
!strcmp(fstab->recs[i].fs_type, "emmc") ||
!strcmp(fstab->recs[i].fs_type, "mtd")) {
ERROR("Cannot mount filesystem of type %s on %s\n",
fstab->recs[i].fs_type, n_blk_device);
goto out;
}
/* First check the filesystem if requested */
if (fstab->recs[i].fs_mgr_flags & MF_WAIT) {
wait_for_file(n_blk_device, WAIT_TIMEOUT);
}
int force_check = do_quota(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
&fstab->recs[i]);
if ((fstab->recs[i].fs_mgr_flags & MF_CHECK) || force_check) {
check_fs(n_blk_device, fstab->recs[i].fs_type,
fstab->recs[i].mount_point);
}
if (fstab->recs[i].fs_mgr_flags & MF_RESERVEDSIZE) {
do_reserved_size(n_blk_device, fstab->recs[i].fs_type, &fstab->recs[i]);
}
if ((fstab->recs[i].fs_mgr_flags & MF_VERIFY) && device_is_secure()) {
int rc = fs_mgr_setup_verity(&fstab->recs[i]);
if (__android_log_is_debuggable() && rc == FS_MGR_SETUP_VERITY_DISABLED) {
INFO("Verity disabled");
} else if (rc != FS_MGR_SETUP_VERITY_SUCCESS) {
ERROR("Could not set up verified partition, skipping!\n");
continue;
}
}
/* Now mount it where requested */
if (tmp_mount_point) {
m = tmp_mount_point;
} else {
m = fstab->recs[i].mount_point;
}
if (__mount(n_blk_device, m, &fstab->recs[i])) {
if (!first_mount_errno) first_mount_errno = errno;
mount_errors++;
continue;
} else {
ret = 0;
goto out;
}
}
if (mount_errors) {
ERROR("Cannot mount filesystem on %s at %s. error: %s\n",
n_blk_device, m, strerror(first_mount_errno));
if (first_mount_errno == EBUSY) {
ret = FS_MGR_DOMNT_BUSY;
} else {
ret = FS_MGR_DOMNT_FAILED;
}
} else {
/* We didn't find a match, say so and return an error */
ERROR("Cannot find mount point %s in fstab\n", fstab->recs[i].mount_point);
}
out:
return ret;
}
/*
* Tries to mount any of the consecutive fstab entries that match
* the mountpoint of the one given by fstab->recs[start_idx].
*
* end_idx: On return, will be the last rec that was looked at.
* attempted_idx: On return, will indicate which fstab rec
* succeeded. In case of failure, it will be the start_idx.
* Returns
* -1 on failure with errno set to match the 1st mount failure.
* 0 on success.
*/
static int mount_with_alternatives(struct fstab *fstab, int start_idx, int *end_idx, int *attempted_idx)
{
int i;
int mount_errno = 0;
int mounted = 0;
if (!end_idx || !attempted_idx || start_idx >= fstab->num_entries) {
errno = EINVAL;
if (end_idx) *end_idx = start_idx;
if (attempted_idx) *attempted_idx = start_idx;
return -1;
}
/* Hunt down an fstab entry for the same mount point that might succeed */
for (i = start_idx;
/* We required that fstab entries for the same mountpoint be consecutive */
i < fstab->num_entries && !strcmp(fstab->recs[start_idx].mount_point, fstab->recs[i].mount_point);
i++) {
/*
* Don't try to mount/encrypt the same mount point again.
* Deal with alternate entries for the same point which are required to be all following
* each other.
*/
if (mounted) {
ERROR("%s(): skipping fstab dup mountpoint=%s rec[%d].fs_type=%s already mounted as %s.\n", __func__,
fstab->recs[i].mount_point, i, fstab->recs[i].fs_type, fstab->recs[*attempted_idx].fs_type);
continue;
}
int force_check = do_quota(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
&fstab->recs[i]);
if ((fstab->recs[i].fs_mgr_flags & MF_CHECK) || force_check) {
check_fs(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
fstab->recs[i].mount_point);
}
if (fstab->recs[i].fs_mgr_flags & MF_RESERVEDSIZE) {
do_reserved_size(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
&fstab->recs[i]);
}
if (!__mount(fstab->recs[i].blk_device, fstab->recs[i].mount_point, &fstab->recs[i])) {
*attempted_idx = i;
mounted = 1;
if (i != start_idx) {
ERROR("%s(): Mounted %s on %s with fs_type=%s instead of %s\n", __func__,
fstab->recs[i].blk_device, fstab->recs[i].mount_point, fstab->recs[i].fs_type,
fstab->recs[start_idx].fs_type);
}
} else {
/* back up errno for crypto decisions */
mount_errno = errno;
}
}
/* Adjust i for the case where it was still withing the recs[] */
if (i < fstab->num_entries) --i;
*end_idx = i;
if (!mounted) {
*attempted_idx = start_idx;
errno = mount_errno;
return -1;
}
return 0;
}
