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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>
#include "kerncompat.h"
#include "ioctl.h"
#include "btrfs_cmds.h"
/* btrfs-list.c */
char *path_for_root(int fd, u64 root);
static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
{
int ret;
int i;
struct btrfs_ioctl_ino_path_args ipa;
struct btrfs_data_container *fspath;
fspath = malloc(4096);
if (!fspath)
return 1;
ipa.inum = inum;
ipa.size = 4096;
ipa.fspath = (u64)fspath;
ret = ioctl(fd, BTRFS_IOC_INO_PATHS, &ipa);
if (ret) {
printf("ioctl ret=%d, error: %s\n", ret, strerror(errno));
goto out;
}
if (verbose)
printf("ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu, "
"cnt=%d, missed=%d\n", ret,
(unsigned long)fspath->bytes_left,
(unsigned long)fspath->bytes_missing,
fspath->elem_cnt, fspath->elem_missed);
for (i = 0; i < fspath->elem_cnt; ++i) {
char **str = (char **)fspath->val;
str[i] += (unsigned long)fspath->val;
if (prepend)
printf("%s/%s\n", prepend, str[i]);
else
printf("%s\n", str[i]);
}
out:
free(fspath);
return ret;
}
int do_ino_to_path(int nargs, char **argv)
{
int fd;
int verbose = 0;
optind = 1;
while (1) {
int c = getopt(nargs, argv, "v");
if (c < 0)
break;
switch (c) {
case 'v':
verbose = 1;
break;
default:
fprintf(stderr, "invalid arguments for ipath\n");
return 1;
}
}
if (nargs - optind != 2) {
fprintf(stderr, "invalid arguments for ipath\n");
return 1;
}
fd = open_file_or_dir(argv[optind+1]);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind+1]);
return 12;
}
return __ino_to_path_fd(atoll(argv[optind]), fd, verbose,
argv[optind+1]);
}
int do_logical_to_ino(int nargs, char **argv)
{
int ret;
int fd;
int i;
int verbose = 0;
int getpath = 1;
int bytes_left;
struct btrfs_ioctl_logical_ino_args loi;
struct btrfs_data_container *inodes;
char full_path[4096];
char *path_ptr;
optind = 1;
while (1) {
int c = getopt(nargs, argv, "Pv");
if (c < 0)
break;
switch (c) {
case 'P':
getpath = 0;
break;
case 'v':
verbose = 1;
break;
default:
fprintf(stderr, "invalid arguments for ipath\n");
return 1;
}
}
if (nargs - optind != 2) {
fprintf(stderr, "invalid arguments for ipath\n");
return 1;
}
inodes = malloc(4096);
if (!inodes)
return 1;
loi.logical = atoll(argv[optind]);
loi.size = 4096;
loi.inodes = (u64)inodes;
fd = open_file_or_dir(argv[optind+1]);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind+1]);
ret = 12;
goto out;
}
ret = ioctl(fd, BTRFS_IOC_LOGICAL_INO, &loi);
if (ret) {
printf("ioctl ret=%d, error: %s\n", ret, strerror(errno));
goto out;
}
if (verbose)
printf("ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu, "
"cnt=%d, missed=%d\n", ret,
(unsigned long)inodes->bytes_left,
(unsigned long)inodes->bytes_missing,
inodes->elem_cnt, inodes->elem_missed);
bytes_left = sizeof(full_path);
ret = snprintf(full_path, bytes_left, "%s/", argv[optind+1]);
path_ptr = full_path + ret;
bytes_left -= ret + 1;
BUG_ON(bytes_left < 0);
for (i = 0; i < inodes->elem_cnt; i += 3) {
u64 inum = inodes->val[i];
u64 offset = inodes->val[i+1];
u64 root = inodes->val[i+2];
int path_fd;
char *name;
if (getpath) {
name = path_for_root(fd, root);
if (IS_ERR(name))
return PTR_ERR(name);
if (!name) {
path_ptr[-1] = '\0';
path_fd = fd;
} else {
path_ptr[-1] = '/';
ret = snprintf(path_ptr, bytes_left, "%s",
name);
BUG_ON(ret >= bytes_left);
free(name);
path_fd = open_file_or_dir(full_path);
if (path_fd < 0) {
fprintf(stderr, "ERROR: can't access "
"'%s'\n", full_path);
goto out;
}
}
__ino_to_path_fd(inum, path_fd, verbose, full_path);
} else {
printf("inode %llu offset %llu root %llu\n", inum,
offset, root);
}
}
out:
free(inodes);
return ret;
}
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