diff options
author | Ilya Dryomov <idryomov@gmail.com> | 2012-02-03 21:00:17 +0200 |
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committer | Ilya Dryomov <idryomov@gmail.com> | 2012-02-03 21:00:17 +0200 |
commit | 4f268331932819fb5e002e4a88449de6f76bb0b2 (patch) | |
tree | e2ff8cd9fc5d4aba5449ac6a2af4cef15b53839e /cmds-inspect.c | |
parent | fdb6c0402337d9607c7a39155088eaf033742752 (diff) |
Btrfs-progs: rearrange files in the repo
Separate every command group into its own file (cmds_<group>.c) and
rearrange includes. Remove btrfs_cmds.c.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'cmds-inspect.c')
-rw-r--r-- | cmds-inspect.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/cmds-inspect.c b/cmds-inspect.c new file mode 100644 index 00000000..ca42d7f5 --- /dev/null +++ b/cmds-inspect.c @@ -0,0 +1,214 @@ +/* + * 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; +} + |