LXR busybox/e2fsprogs/lsattr.c

   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 */
  12//config:config LSATTR
  13//config:       bool "lsattr (5.5 kb)"
  14//config:       default y
  15//config:       select PLATFORM_LINUX
  16//config:       help
  17//config:       lsattr lists the file attributes on a second extended file system.
  18
  19//applet:IF_LSATTR(APPLET_NOEXEC(lsattr, lsattr, BB_DIR_BIN, BB_SUID_DROP, lsattr))
  20/* ls is NOEXEC, so we should be too! ;) */
  21
  22//kbuild:lib-$(CONFIG_LSATTR) += lsattr.o e2fs_lib.o
  23
  24//usage:#define lsattr_trivial_usage
  25//usage:       "[-Radlv] [FILE]..."
  26//usage:#define lsattr_full_usage "\n\n"
  27//usage:       "List ext2 file attributes\n"
  28//usage:     "\n        -R      Recurse"
  29//usage:     "\n        -a      Don't hide entries starting with ."
  30//usage:     "\n        -d      List directory entries instead of contents"
  31//usage:     "\n        -l      List long flag names"
  32//usage:     "\n        -v      List version/generation number"
  33
  34#include "libbb.h"
  35#include "e2fs_lib.h"
  36
  37enum {
  38        OPT_RECUR      = 0x1,
  39        OPT_ALL        = 0x2,
  40        OPT_DIRS_OPT   = 0x4,
  41        OPT_PF_LONG    = 0x8,
  42        OPT_GENERATION = 0x10,
  43};
  44
  45static void list_attributes(const char *name)
  46{
  47        unsigned long fsflags;
  48        unsigned long generation;
  49
  50        if (fgetflags(name, &fsflags) != 0)
  51                goto read_err;
  52
  53        if (option_mask32 & OPT_GENERATION) {
  54                if (fgetversion(name, &generation) != 0)
  55                        goto read_err;
  56                printf("%5lu ", generation);
  57        }
  58
  59        if (option_mask32 & OPT_PF_LONG) {
  60                printf("%-28s ", name);
  61                print_e2flags(stdout, fsflags, PFOPT_LONG);
  62                bb_putchar('\n');
  63        } else {
  64                print_e2flags(stdout, fsflags, 0);
  65                printf(" %s\n", name);
  66        }
  67
  68        return;
  69 read_err:
  70        bb_perror_msg("reading %s", name);
  71}
  72
  73static int FAST_FUNC lsattr_dir_proc(const char *dir_name,
  74                struct dirent *de,
  75                void *private UNUSED_PARAM)
  76{
  77        struct stat st;
  78        char *path;
  79
  80        path = concat_path_file(dir_name, de->d_name);
  81
  82        if (lstat(path, &st) != 0)
  83                bb_perror_msg("stat %s", path);
  84        else if (de->d_name[0] != '.' || (option_mask32 & OPT_ALL)) {
  85                list_attributes(path);
  86                if (S_ISDIR(st.st_mode) && (option_mask32 & OPT_RECUR)
  87                 && !DOT_OR_DOTDOT(de->d_name)
  88                ) {
  89                        printf("\n%s:\n", path);
  90                        iterate_on_dir(path, lsattr_dir_proc, NULL);
  91                        bb_putchar('\n');
  92                }
  93        }
  94
  95        free(path);
  96        return 0;
  97}
  98
  99static void lsattr_args(const char *name)
 100{
 101        struct stat st;
 102
 103        if (lstat(name, &st) == -1) {
 104                bb_perror_msg("stat %s", name);
 105        } else if (S_ISDIR(st.st_mode) && !(option_mask32 & OPT_DIRS_OPT)) {
 106                iterate_on_dir(name, lsattr_dir_proc, NULL);
 107        } else {
 108                list_attributes(name);
 109        }
 110}
 111
 112int lsattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 113int lsattr_main(int argc UNUSED_PARAM, char **argv)
 114{
 115        getopt32(argv, "Radlv");
 116        argv += optind;
 117
 118        if (!*argv)
 119                *--argv = (char*)".";
 120        do lsattr_args(*argv++); while (*argv);
 121
 122        return EXIT_SUCCESS;
 123}
 124