Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * lsattr.c - List file attributes on an ext2 file system |
| 4 | * |
| 5 | * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr> |
| 6 | * Laboratoire MASI, Institut Blaise Pascal |
| 7 | * Universite Pierre et Marie Curie (Paris VI) |
| 8 | * |
| 9 | * This file can be redistributed under the terms of the GNU General |
| 10 | * Public License |
| 11 | */ |
Denys Vlasenko | 000eda4 | 2015-10-18 22:40:23 +0200 | [diff] [blame] | 12 | //config:config LSATTR |
Denys Vlasenko | b097a84 | 2018-12-28 03:20:17 +0100 | [diff] [blame] | 13 | //config: bool "lsattr (5.5 kb)" |
Denys Vlasenko | 000eda4 | 2015-10-18 22:40:23 +0200 | [diff] [blame] | 14 | //config: default y |
Denys Vlasenko | 000eda4 | 2015-10-18 22:40:23 +0200 | [diff] [blame] | 15 | //config: help |
Denys Vlasenko | 72089cf | 2017-07-21 09:50:55 +0200 | [diff] [blame] | 16 | //config: lsattr lists the file attributes on a second extended file system. |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 17 | |
Denys Vlasenko | 99125c0 | 2017-08-05 20:38:04 +0200 | [diff] [blame] | 18 | //applet:IF_LSATTR(APPLET_NOEXEC(lsattr, lsattr, BB_DIR_BIN, BB_SUID_DROP, lsattr)) |
| 19 | /* ls is NOEXEC, so we should be too! ;) */ |
Denys Vlasenko | 000eda4 | 2015-10-18 22:40:23 +0200 | [diff] [blame] | 20 | |
| 21 | //kbuild:lib-$(CONFIG_LSATTR) += lsattr.o e2fs_lib.o |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 22 | |
Pere Orga | 6a3e01d | 2011-04-01 22:56:30 +0200 | [diff] [blame] | 23 | //usage:#define lsattr_trivial_usage |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 24 | //usage: "[-Radlpv] [FILE]..." |
Pere Orga | 6a3e01d | 2011-04-01 22:56:30 +0200 | [diff] [blame] | 25 | //usage:#define lsattr_full_usage "\n\n" |
Denys Vlasenko | 36647ab | 2015-10-19 01:29:20 +0200 | [diff] [blame] | 26 | //usage: "List ext2 file attributes\n" |
Pere Orga | 6a3e01d | 2011-04-01 22:56:30 +0200 | [diff] [blame] | 27 | //usage: "\n -R Recurse" |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 28 | //usage: "\n -a Include names starting with ." |
| 29 | //usage: "\n -d List directory names, not contents" |
| 30 | // -a,-d text should match ls --help |
Pere Orga | 6a3e01d | 2011-04-01 22:56:30 +0200 | [diff] [blame] | 31 | //usage: "\n -l List long flag names" |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 32 | //usage: "\n -p List project ID" |
Denys Vlasenko | 36647ab | 2015-10-19 01:29:20 +0200 | [diff] [blame] | 33 | //usage: "\n -v List version/generation number" |
Pere Orga | 6a3e01d | 2011-04-01 22:56:30 +0200 | [diff] [blame] | 34 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 35 | #include "libbb.h" |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 36 | #include "e2fs_lib.h" |
| 37 | |
| 38 | enum { |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 39 | OPT_RECUR = 1 << 0, |
| 40 | OPT_ALL = 1 << 1, |
| 41 | OPT_DIRS_OPT = 1 << 2, |
| 42 | OPT_PF_LONG = 1 << 3, |
| 43 | OPT_GENERATION = 1 << 4, |
| 44 | OPT_PROJID = 1 << 5, |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 45 | }; |
| 46 | |
| 47 | static void list_attributes(const char *name) |
| 48 | { |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 49 | unsigned fsflags; |
| 50 | int fd, r; |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 51 | |
Denys Vlasenko | 9468ea0 | 2021-06-24 01:07:56 +0200 | [diff] [blame] | 52 | /* There is no way to run needed ioctls on a symlink. |
| 53 | * open(O_PATH | O_NOFOLLOW) _can_ be used to get a fd referring to the symlink, |
| 54 | * but ioctls fail on such a fd (tried on 4.12.0 kernel). |
| 55 | * e2fsprogs-1.46.2 uses open(O_NOFOLLOW), it fails on symlinks. |
| 56 | */ |
| 57 | fd = open_or_warn(name, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOFOLLOW); |
| 58 | if (fd < 0) |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 59 | return; |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 60 | |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 61 | if (option_mask32 & OPT_PROJID) { |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 62 | struct ext2_fsxattr fsxattr; |
| 63 | r = ioctl(fd, EXT2_IOC_FSGETXATTR, &fsxattr); |
Denys Vlasenko | 85a5bc9 | 2021-06-23 15:33:22 +0200 | [diff] [blame] | 64 | /* note: ^^^ may fail in 32-bit userspace on 64-bit kernel (seen on 4.12.0) */ |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 65 | if (r != 0) |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 66 | goto read_err; |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 67 | printf("%5u ", (unsigned)fsxattr.fsx_projid); |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 68 | } |
| 69 | |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 70 | if (option_mask32 & OPT_GENERATION) { |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 71 | unsigned generation; |
| 72 | r = ioctl(fd, EXT2_IOC_GETVERSION, &generation); |
| 73 | if (r != 0) |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 74 | goto read_err; |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 75 | printf("%-10u ", generation); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 76 | } |
| 77 | |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 78 | r = ioctl(fd, EXT2_IOC_GETFLAGS, &fsflags); |
| 79 | if (r != 0) |
| 80 | goto read_err; |
| 81 | |
| 82 | close(fd); |
| 83 | |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 84 | if (option_mask32 & OPT_PF_LONG) { |
| 85 | printf("%-28s ", name); |
Denys Vlasenko | 87c40cf | 2021-06-24 09:31:57 +0200 | [diff] [blame^] | 86 | print_e2flags_long(fsflags); |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 87 | bb_putchar('\n'); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 88 | } else { |
Denys Vlasenko | 87c40cf | 2021-06-24 09:31:57 +0200 | [diff] [blame^] | 89 | print_e2flags(fsflags); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 90 | printf(" %s\n", name); |
| 91 | } |
| 92 | |
| 93 | return; |
| 94 | read_err: |
| 95 | bb_perror_msg("reading %s", name); |
Denys Vlasenko | 96436fb | 2021-06-23 12:45:51 +0200 | [diff] [blame] | 96 | close(fd); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 97 | } |
| 98 | |
Denys Vlasenko | d5f1b1b | 2009-06-05 12:06:05 +0200 | [diff] [blame] | 99 | static int FAST_FUNC lsattr_dir_proc(const char *dir_name, |
| 100 | struct dirent *de, |
| 101 | void *private UNUSED_PARAM) |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 102 | { |
| 103 | struct stat st; |
| 104 | char *path; |
| 105 | |
| 106 | path = concat_path_file(dir_name, de->d_name); |
| 107 | |
Denis Vlasenko | 8acf521 | 2007-04-15 11:48:27 +0000 | [diff] [blame] | 108 | if (lstat(path, &st) != 0) |
Denys Vlasenko | 85a5bc9 | 2021-06-23 15:33:22 +0200 | [diff] [blame] | 109 | bb_perror_msg("can't stat '%s'", path); |
Denys Vlasenko | 9468ea0 | 2021-06-24 01:07:56 +0200 | [diff] [blame] | 110 | |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 111 | else if (de->d_name[0] != '.' || (option_mask32 & OPT_ALL)) { |
Denys Vlasenko | 9468ea0 | 2021-06-24 01:07:56 +0200 | [diff] [blame] | 112 | /* Don't try to open device files, fifos etc */ |
| 113 | if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode) || S_ISDIR(st.st_mode)) |
| 114 | list_attributes(path); |
| 115 | |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 116 | if (S_ISDIR(st.st_mode) && (option_mask32 & OPT_RECUR) |
Denis Vlasenko | 8acf521 | 2007-04-15 11:48:27 +0000 | [diff] [blame] | 117 | && !DOT_OR_DOTDOT(de->d_name) |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 118 | ) { |
| 119 | printf("\n%s:\n", path); |
| 120 | iterate_on_dir(path, lsattr_dir_proc, NULL); |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 121 | bb_putchar('\n'); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 122 | } |
| 123 | } |
| 124 | |
| 125 | free(path); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | static void lsattr_args(const char *name) |
| 130 | { |
| 131 | struct stat st; |
| 132 | |
| 133 | if (lstat(name, &st) == -1) { |
Denys Vlasenko | 85a5bc9 | 2021-06-23 15:33:22 +0200 | [diff] [blame] | 134 | bb_perror_msg("can't stat '%s'", name); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 135 | } else if (S_ISDIR(st.st_mode) && !(option_mask32 & OPT_DIRS_OPT)) { |
| 136 | iterate_on_dir(name, lsattr_dir_proc, NULL); |
| 137 | } else { |
| 138 | list_attributes(name); |
| 139 | } |
| 140 | } |
| 141 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 142 | int lsattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 143 | int lsattr_main(int argc UNUSED_PARAM, char **argv) |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 144 | { |
Denys Vlasenko | 526b834 | 2021-06-20 10:57:24 +0200 | [diff] [blame] | 145 | getopt32(argv, "Radlvp"); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 146 | argv += optind; |
| 147 | |
| 148 | if (!*argv) |
Denis Vlasenko | 62a90cd | 2008-03-17 09:07:36 +0000 | [diff] [blame] | 149 | *--argv = (char*)"."; |
| 150 | do lsattr_args(*argv++); while (*argv); |
Denis Vlasenko | c4f623e | 2006-12-26 01:30:59 +0000 | [diff] [blame] | 151 | |
| 152 | return EXIT_SUCCESS; |
| 153 | } |