[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * tiny-ls.c version 0.1.0: A minimalist 'ls'
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| 4 | * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
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| 5 | *
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| 6 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 7 | */
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| 8 |
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| 9 | /*
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| 10 | * To achieve a small memory footprint, this version of 'ls' doesn't do any
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| 11 | * file sorting, and only has the most essential command line switches
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| 12 | * (i.e., the ones I couldn't live without :-) All features which involve
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| 13 | * linking in substantial chunks of libc can be disabled.
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| 14 | *
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| 15 | * Although I don't really want to add new features to this program to
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| 16 | * keep it small, I *am* interested to receive bug fixes and ways to make
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| 17 | * it more portable.
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| 18 | *
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| 19 | * KNOWN BUGS:
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| 20 | * 1. ls -l of a directory doesn't give "total <blocks>" header
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| 21 | * 2. ls of a symlink to a directory doesn't list directory contents
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| 22 | * 3. hidden files can make column width too large
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| 23 | *
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| 24 | * NON-OPTIMAL BEHAVIOUR:
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| 25 | * 1. autowidth reads directories twice
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| 26 | * 2. if you do a short directory listing without filetype characters
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| 27 | * appended, there's no need to stat each one
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| 28 | * PORTABILITY:
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| 29 | * 1. requires lstat (BSD) - how do you do it without?
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| 30 | */
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| 31 |
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[1765] | 32 | #include <getopt.h>
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| 33 | #include "libbb.h"
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| 34 |
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| 35 | /* This is a NOEXEC applet. Be very careful! */
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| 36 |
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| 37 |
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[821] | 38 | enum {
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| 39 |
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[1765] | 40 | TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
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| 41 | COLUMN_GAP = 2, /* includes the file type char */
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[821] | 42 |
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| 43 | /* what is the overall style of the listing */
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[1765] | 44 | STYLE_COLUMNS = 1 << 21, /* fill columns */
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| 45 | STYLE_LONG = 2 << 21, /* one record per line, extended info */
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| 46 | STYLE_SINGLE = 3 << 21, /* one record per line */
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| 47 | STYLE_MASK = STYLE_SINGLE,
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[821] | 48 |
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| 49 | /* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
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| 50 | /* what file information will be listed */
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[1765] | 51 | LIST_INO = 1 << 0,
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| 52 | LIST_BLOCKS = 1 << 1,
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| 53 | LIST_MODEBITS = 1 << 2,
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| 54 | LIST_NLINKS = 1 << 3,
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| 55 | LIST_ID_NAME = 1 << 4,
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| 56 | LIST_ID_NUMERIC = 1 << 5,
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| 57 | LIST_CONTEXT = 1 << 6,
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| 58 | LIST_SIZE = 1 << 7,
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| 59 | LIST_DEV = 1 << 8,
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| 60 | LIST_DATE_TIME = 1 << 9,
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| 61 | LIST_FULLTIME = 1 << 10,
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| 62 | LIST_FILENAME = 1 << 11,
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| 63 | LIST_SYMLINK = 1 << 12,
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| 64 | LIST_FILETYPE = 1 << 13,
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| 65 | LIST_EXEC = 1 << 14,
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| 66 | LIST_MASK = (LIST_EXEC << 1) - 1,
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[821] | 67 |
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| 68 | /* what files will be displayed */
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[1765] | 69 | DISP_DIRNAME = 1 << 15, /* 2 or more items? label directories */
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| 70 | DISP_HIDDEN = 1 << 16, /* show filenames starting with . */
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| 71 | DISP_DOT = 1 << 17, /* show . and .. */
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| 72 | DISP_NOLIST = 1 << 18, /* show directory as itself, not contents */
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| 73 | DISP_RECURSIVE = 1 << 19, /* show directory and everything below it */
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| 74 | DISP_ROWS = 1 << 20, /* print across rows */
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| 75 | DISP_MASK = ((DISP_ROWS << 1) - 1) & ~(DISP_DIRNAME - 1),
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[821] | 76 |
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[1765] | 77 | /* how will the files be sorted (CONFIG_FEATURE_LS_SORTFILES) */
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| 78 | SORT_FORWARD = 0, /* sort in reverse order */
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| 79 | SORT_REVERSE = 1 << 27, /* sort in reverse order */
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[821] | 80 |
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[1765] | 81 | SORT_NAME = 0, /* sort by file name */
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| 82 | SORT_SIZE = 1 << 28, /* sort by file size */
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| 83 | SORT_ATIME = 2 << 28, /* sort by last access time */
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| 84 | SORT_CTIME = 3 << 28, /* sort by last change time */
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| 85 | SORT_MTIME = 4 << 28, /* sort by last modification time */
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| 86 | SORT_VERSION = 5 << 28, /* sort by version */
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| 87 | SORT_EXT = 6 << 28, /* sort by file name extension */
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| 88 | SORT_DIR = 7 << 28, /* sort by file or directory */
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| 89 | SORT_MASK = (7 << 28) * ENABLE_FEATURE_LS_SORTFILES,
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[821] | 90 |
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[1765] | 91 | /* which of the three times will be used */
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| 92 | TIME_CHANGE = (1 << 23) * ENABLE_FEATURE_LS_TIMESTAMPS,
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| 93 | TIME_ACCESS = (1 << 24) * ENABLE_FEATURE_LS_TIMESTAMPS,
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| 94 | TIME_MASK = (3 << 23) * ENABLE_FEATURE_LS_TIMESTAMPS,
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[821] | 95 |
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[1765] | 96 | FOLLOW_LINKS = (1 << 25) * ENABLE_FEATURE_LS_FOLLOWLINKS,
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[821] | 97 |
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[1765] | 98 | LS_DISP_HR = (1 << 26) * ENABLE_FEATURE_HUMAN_READABLE,
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[821] | 99 |
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[1765] | 100 | LIST_SHORT = LIST_FILENAME,
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| 101 | LIST_LONG = LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
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| 102 | LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK,
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[821] | 103 |
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[1765] | 104 | SPLIT_DIR = 1,
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| 105 | SPLIT_FILE = 0,
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| 106 | SPLIT_SUBDIR = 2,
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[821] | 107 |
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[1765] | 108 | };
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[821] | 109 |
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| 110 | #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
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| 111 | #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
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[1765] | 112 | #define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
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[821] | 113 | #define COLOR(mode) ("\000\043\043\043\042\000\043\043"\
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| 114 | "\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
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| 115 | #define ATTR(mode) ("\00\00\01\00\01\00\01\00"\
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| 116 | "\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)])
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[1765] | 117 |
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| 118 | /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
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| 119 | #if ENABLE_FEATURE_LS_COLOR
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| 120 | static smallint show_color;
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| 121 | /* long option entry used only for --color, which has no short option
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| 122 | * equivalent */
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| 123 | static const char ls_color_opt[] ALIGN1 =
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| 124 | "color\0" Optional_argument "\xff" /* no short equivalent */
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| 125 | ;
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| 126 | #else
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| 127 | enum { show_color = 0 };
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[821] | 128 | #endif
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| 129 |
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| 130 | /*
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| 131 | * a directory entry and its stat info are stored here
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| 132 | */
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[1765] | 133 | struct dnode { /* the basic node */
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| 134 | const char *name; /* the dir entry name */
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| 135 | const char *fullname; /* the dir entry name */
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[821] | 136 | int allocated;
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[1765] | 137 | struct stat dstat; /* the file stat info */
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| 138 | USE_SELINUX(security_context_t sid;)
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| 139 | struct dnode *next; /* point at the next node */
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[821] | 140 | };
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| 141 | typedef struct dnode dnode_t;
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| 142 |
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| 143 | static struct dnode **list_dir(const char *);
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| 144 | static struct dnode **dnalloc(int);
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| 145 | static int list_single(struct dnode *);
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| 146 |
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[1765] | 147 | static unsigned all_fmt;
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[821] | 148 |
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[1765] | 149 | #if ENABLE_FEATURE_AUTOWIDTH
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| 150 | static unsigned tabstops = COLUMN_GAP;
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| 151 | static unsigned terminal_width = TERMINAL_WIDTH;
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[821] | 152 | #else
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[1765] | 153 | enum {
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| 154 | tabstops = COLUMN_GAP,
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| 155 | terminal_width = TERMINAL_WIDTH,
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| 156 | };
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[821] | 157 | #endif
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| 158 |
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| 159 | static int status = EXIT_SUCCESS;
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| 160 |
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[1765] | 161 | static struct dnode *my_stat(const char *fullname, const char *name, int force_follow)
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[821] | 162 | {
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| 163 | struct stat dstat;
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| 164 | struct dnode *cur;
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[1765] | 165 | USE_SELINUX(security_context_t sid = NULL;)
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[821] | 166 |
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[1765] | 167 | if ((all_fmt & FOLLOW_LINKS) || force_follow) {
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| 168 | #if ENABLE_SELINUX
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[821] | 169 | if (is_selinux_enabled()) {
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[1765] | 170 | getfilecon(fullname, &sid);
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[821] | 171 | }
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| 172 | #endif
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| 173 | if (stat(fullname, &dstat)) {
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| 174 | bb_perror_msg("%s", fullname);
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| 175 | status = EXIT_FAILURE;
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| 176 | return 0;
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| 177 | }
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[1765] | 178 | } else {
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| 179 | #if ENABLE_SELINUX
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| 180 | if (is_selinux_enabled()) {
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| 181 | lgetfilecon(fullname, &sid);
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[821] | 182 | }
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| 183 | #endif
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| 184 | if (lstat(fullname, &dstat)) {
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| 185 | bb_perror_msg("%s", fullname);
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| 186 | status = EXIT_FAILURE;
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| 187 | return 0;
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| 188 | }
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| 189 | }
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| 190 |
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[1765] | 191 | cur = xmalloc(sizeof(struct dnode));
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[821] | 192 | cur->fullname = fullname;
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| 193 | cur->name = name;
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| 194 | cur->dstat = dstat;
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[1765] | 195 | USE_SELINUX(cur->sid = sid;)
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[821] | 196 | return cur;
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| 197 | }
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| 198 |
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[1765] | 199 | #if ENABLE_FEATURE_LS_COLOR
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[821] | 200 | static char fgcolor(mode_t mode)
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| 201 | {
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| 202 | /* Check wheter the file is existing (if so, color it red!) */
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[1765] | 203 | if (errno == ENOENT)
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[821] | 204 | return '\037';
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| 205 | if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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| 206 | return COLOR(0xF000); /* File is executable ... */
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| 207 | return COLOR(mode);
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| 208 | }
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| 209 |
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| 210 | static char bgcolor(mode_t mode)
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| 211 | {
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| 212 | if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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| 213 | return ATTR(0xF000); /* File is executable ... */
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| 214 | return ATTR(mode);
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| 215 | }
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| 216 | #endif
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| 217 |
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[1765] | 218 | #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
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[821] | 219 | static char append_char(mode_t mode)
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| 220 | {
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| 221 | if (!(all_fmt & LIST_FILETYPE))
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| 222 | return '\0';
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| 223 | if (S_ISDIR(mode))
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| 224 | return '/';
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| 225 | if (!(all_fmt & LIST_EXEC))
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| 226 | return '\0';
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| 227 | if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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| 228 | return '*';
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| 229 | return APPCHAR(mode);
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| 230 | }
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| 231 | #endif
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| 232 |
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[1765] | 233 | #define countdirs(A, B) count_dirs((A), (B), 1)
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| 234 | #define countsubdirs(A, B) count_dirs((A), (B), 0)
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[821] | 235 | static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs)
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| 236 | {
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| 237 | int i, dirs;
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| 238 |
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[1765] | 239 | if (!dn)
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| 240 | return 0;
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[821] | 241 | dirs = 0;
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| 242 | for (i = 0; i < nfiles; i++) {
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[1765] | 243 | const char *name;
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| 244 | if (!S_ISDIR(dn[i]->dstat.st_mode))
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| 245 | continue;
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| 246 | name = dn[i]->name;
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| 247 | if (notsubdirs
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| 248 | || name[0]!='.' || (name[1] && (name[1]!='.' || name[2]))
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| 249 | ) {
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[821] | 250 | dirs++;
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[1765] | 251 | }
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[821] | 252 | }
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[1765] | 253 | return dirs;
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[821] | 254 | }
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| 255 |
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| 256 | static int countfiles(struct dnode **dnp)
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| 257 | {
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| 258 | int nfiles;
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| 259 | struct dnode *cur;
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| 260 |
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| 261 | if (dnp == NULL)
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[1765] | 262 | return 0;
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[821] | 263 | nfiles = 0;
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[1765] | 264 | for (cur = dnp[0]; cur->next; cur = cur->next)
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[821] | 265 | nfiles++;
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| 266 | nfiles++;
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[1765] | 267 | return nfiles;
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[821] | 268 | }
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| 269 |
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| 270 | /* get memory to hold an array of pointers */
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| 271 | static struct dnode **dnalloc(int num)
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| 272 | {
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| 273 | if (num < 1)
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[1765] | 274 | return NULL;
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[821] | 275 |
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[1765] | 276 | return xzalloc(num * sizeof(struct dnode *));
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[821] | 277 | }
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| 278 |
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[1765] | 279 | #if ENABLE_FEATURE_LS_RECURSIVE
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[821] | 280 | static void dfree(struct dnode **dnp, int nfiles)
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| 281 | {
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| 282 | int i;
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| 283 |
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| 284 | if (dnp == NULL)
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| 285 | return;
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| 286 |
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| 287 | for (i = 0; i < nfiles; i++) {
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| 288 | struct dnode *cur = dnp[i];
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[1765] | 289 | if (cur->allocated)
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| 290 | free((char*)cur->fullname); /* free the filename */
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[821] | 291 | free(cur); /* free the dnode */
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| 292 | }
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| 293 | free(dnp); /* free the array holding the dnode pointers */
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| 294 | }
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| 295 | #else
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[1765] | 296 | #define dfree(...) ((void)0)
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[821] | 297 | #endif
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| 298 |
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| 299 | static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
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| 300 | {
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| 301 | int dncnt, i, d;
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| 302 | struct dnode **dnp;
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| 303 |
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| 304 | if (dn == NULL || nfiles < 1)
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[1765] | 305 | return NULL;
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[821] | 306 |
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| 307 | /* count how many dirs and regular files there are */
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| 308 | if (which == SPLIT_SUBDIR)
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| 309 | dncnt = countsubdirs(dn, nfiles);
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| 310 | else {
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| 311 | dncnt = countdirs(dn, nfiles); /* assume we are looking for dirs */
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| 312 | if (which == SPLIT_FILE)
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| 313 | dncnt = nfiles - dncnt; /* looking for files */
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| 314 | }
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| 315 |
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| 316 | /* allocate a file array and a dir array */
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| 317 | dnp = dnalloc(dncnt);
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| 318 |
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| 319 | /* copy the entrys into the file or dir array */
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| 320 | for (d = i = 0; i < nfiles; i++) {
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| 321 | if (S_ISDIR(dn[i]->dstat.st_mode)) {
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[1765] | 322 | const char *name;
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| 323 | if (!(which & (SPLIT_DIR|SPLIT_SUBDIR)))
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| 324 | continue;
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| 325 | name = dn[i]->name;
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| 326 | if ((which & SPLIT_DIR)
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| 327 | || name[0]!='.' || (name[1] && (name[1]!='.' || name[2]))
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| 328 | ) {
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| 329 | dnp[d++] = dn[i];
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[821] | 330 | }
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| 331 | } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
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| 332 | dnp[d++] = dn[i];
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| 333 | }
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| 334 | }
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[1765] | 335 | return dnp;
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[821] | 336 | }
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| 337 |
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[1765] | 338 | #if ENABLE_FEATURE_LS_SORTFILES
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[821] | 339 | static int sortcmp(const void *a, const void *b)
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| 340 | {
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| 341 | struct dnode *d1 = *(struct dnode **)a;
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| 342 | struct dnode *d2 = *(struct dnode **)b;
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[1765] | 343 | unsigned sort_opts = all_fmt & SORT_MASK;
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[821] | 344 | int dif;
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| 345 |
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[1765] | 346 | dif = 0; /* assume SORT_NAME */
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| 347 | // TODO: use pre-initialized function pointer
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| 348 | // instead of branch forest
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[821] | 349 | if (sort_opts == SORT_SIZE) {
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| 350 | dif = (int) (d2->dstat.st_size - d1->dstat.st_size);
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| 351 | } else if (sort_opts == SORT_ATIME) {
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| 352 | dif = (int) (d2->dstat.st_atime - d1->dstat.st_atime);
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| 353 | } else if (sort_opts == SORT_CTIME) {
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| 354 | dif = (int) (d2->dstat.st_ctime - d1->dstat.st_ctime);
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| 355 | } else if (sort_opts == SORT_MTIME) {
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| 356 | dif = (int) (d2->dstat.st_mtime - d1->dstat.st_mtime);
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| 357 | } else if (sort_opts == SORT_DIR) {
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| 358 | dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
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| 359 | /* } else if (sort_opts == SORT_VERSION) { */
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| 360 | /* } else if (sort_opts == SORT_EXT) { */
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| 361 | }
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| 362 |
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| 363 | if (dif == 0) {
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[1765] | 364 | /* sort by name - may be a tie_breaker for time or size cmp */
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[821] | 365 | if (ENABLE_LOCALE_SUPPORT) dif = strcoll(d1->name, d2->name);
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| 366 | else dif = strcmp(d1->name, d2->name);
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| 367 | }
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| 368 |
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[1765] | 369 | if (all_fmt & SORT_REVERSE) {
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[821] | 370 | dif = -dif;
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| 371 | }
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[1765] | 372 | return dif;
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[821] | 373 | }
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| 374 |
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| 375 | static void dnsort(struct dnode **dn, int size)
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| 376 | {
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[1765] | 377 | qsort(dn, size, sizeof(*dn), sortcmp);
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[821] | 378 | }
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| 379 | #else
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[1765] | 380 | #define dnsort(dn, size) ((void)0)
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[821] | 381 | #endif
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| 382 |
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| 383 |
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| 384 | static void showfiles(struct dnode **dn, int nfiles)
|
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| 385 | {
|
---|
| 386 | int i, ncols, nrows, row, nc;
|
---|
| 387 | int column = 0;
|
---|
| 388 | int nexttab = 0;
|
---|
| 389 | int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
|
---|
| 390 |
|
---|
| 391 | if (dn == NULL || nfiles < 1)
|
---|
| 392 | return;
|
---|
| 393 |
|
---|
[1765] | 394 | if (all_fmt & STYLE_LONG) {
|
---|
[821] | 395 | ncols = 1;
|
---|
| 396 | } else {
|
---|
[1765] | 397 | /* find the longest file name, use that as the column width */
|
---|
[821] | 398 | for (i = 0; i < nfiles; i++) {
|
---|
[1765] | 399 | int len = strlen(dn[i]->name);
|
---|
[821] | 400 | if (column_width < len)
|
---|
| 401 | column_width = len;
|
---|
| 402 | }
|
---|
[1765] | 403 | column_width += tabstops +
|
---|
| 404 | USE_SELINUX( ((all_fmt & LIST_CONTEXT) ? 33 : 0) + )
|
---|
| 405 | ((all_fmt & LIST_INO) ? 8 : 0) +
|
---|
| 406 | ((all_fmt & LIST_BLOCKS) ? 5 : 0);
|
---|
[821] | 407 | ncols = (int) (terminal_width / column_width);
|
---|
| 408 | }
|
---|
| 409 |
|
---|
| 410 | if (ncols > 1) {
|
---|
| 411 | nrows = nfiles / ncols;
|
---|
[1765] | 412 | if (nrows * ncols < nfiles)
|
---|
[821] | 413 | nrows++; /* round up fractionals */
|
---|
| 414 | } else {
|
---|
| 415 | nrows = nfiles;
|
---|
| 416 | ncols = 1;
|
---|
| 417 | }
|
---|
| 418 |
|
---|
| 419 | for (row = 0; row < nrows; row++) {
|
---|
| 420 | for (nc = 0; nc < ncols; nc++) {
|
---|
| 421 | /* reach into the array based on the column and row */
|
---|
| 422 | i = (nc * nrows) + row; /* assume display by column */
|
---|
| 423 | if (all_fmt & DISP_ROWS)
|
---|
| 424 | i = (row * ncols) + nc; /* display across row */
|
---|
| 425 | if (i < nfiles) {
|
---|
| 426 | if (column > 0) {
|
---|
| 427 | nexttab -= column;
|
---|
[1765] | 428 | printf("%*s", nexttab, "");
|
---|
| 429 | column += nexttab;
|
---|
| 430 | }
|
---|
[821] | 431 | nexttab = column + column_width;
|
---|
| 432 | column += list_single(dn[i]);
|
---|
[1765] | 433 | }
|
---|
[821] | 434 | }
|
---|
| 435 | putchar('\n');
|
---|
| 436 | column = 0;
|
---|
| 437 | }
|
---|
| 438 | }
|
---|
| 439 |
|
---|
[1765] | 440 |
|
---|
[821] | 441 | static void showdirs(struct dnode **dn, int ndirs, int first)
|
---|
| 442 | {
|
---|
| 443 | int i, nfiles;
|
---|
| 444 | struct dnode **subdnp;
|
---|
| 445 | int dndirs;
|
---|
| 446 | struct dnode **dnd;
|
---|
| 447 |
|
---|
| 448 | if (dn == NULL || ndirs < 1)
|
---|
| 449 | return;
|
---|
| 450 |
|
---|
| 451 | for (i = 0; i < ndirs; i++) {
|
---|
| 452 | if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
|
---|
| 453 | if (!first)
|
---|
[1765] | 454 | puts("");
|
---|
[821] | 455 | first = 0;
|
---|
| 456 | printf("%s:\n", dn[i]->fullname);
|
---|
| 457 | }
|
---|
| 458 | subdnp = list_dir(dn[i]->fullname);
|
---|
| 459 | nfiles = countfiles(subdnp);
|
---|
| 460 | if (nfiles > 0) {
|
---|
| 461 | /* list all files at this level */
|
---|
[1765] | 462 | dnsort(subdnp, nfiles);
|
---|
[821] | 463 | showfiles(subdnp, nfiles);
|
---|
| 464 | if (ENABLE_FEATURE_LS_RECURSIVE) {
|
---|
| 465 | if (all_fmt & DISP_RECURSIVE) {
|
---|
| 466 | /* recursive- list the sub-dirs */
|
---|
| 467 | dnd = splitdnarray(subdnp, nfiles, SPLIT_SUBDIR);
|
---|
| 468 | dndirs = countsubdirs(subdnp, nfiles);
|
---|
| 469 | if (dndirs > 0) {
|
---|
[1765] | 470 | dnsort(dnd, dndirs);
|
---|
[821] | 471 | showdirs(dnd, dndirs, 0);
|
---|
| 472 | /* free the array of dnode pointers to the dirs */
|
---|
| 473 | free(dnd);
|
---|
| 474 | }
|
---|
| 475 | }
|
---|
| 476 | /* free the dnodes and the fullname mem */
|
---|
| 477 | dfree(subdnp, nfiles);
|
---|
| 478 | }
|
---|
| 479 | }
|
---|
| 480 | }
|
---|
| 481 | }
|
---|
| 482 |
|
---|
[1765] | 483 |
|
---|
[821] | 484 | static struct dnode **list_dir(const char *path)
|
---|
| 485 | {
|
---|
| 486 | struct dnode *dn, *cur, **dnp;
|
---|
| 487 | struct dirent *entry;
|
---|
| 488 | DIR *dir;
|
---|
| 489 | int i, nfiles;
|
---|
| 490 |
|
---|
| 491 | if (path == NULL)
|
---|
[1765] | 492 | return NULL;
|
---|
[821] | 493 |
|
---|
| 494 | dn = NULL;
|
---|
| 495 | nfiles = 0;
|
---|
[1765] | 496 | dir = warn_opendir(path);
|
---|
[821] | 497 | if (dir == NULL) {
|
---|
| 498 | status = EXIT_FAILURE;
|
---|
[1765] | 499 | return NULL; /* could not open the dir */
|
---|
[821] | 500 | }
|
---|
| 501 | while ((entry = readdir(dir)) != NULL) {
|
---|
| 502 | char *fullname;
|
---|
| 503 |
|
---|
| 504 | /* are we going to list the file- it may be . or .. or a hidden file */
|
---|
| 505 | if (entry->d_name[0] == '.') {
|
---|
[1765] | 506 | if ((!entry->d_name[1] || (entry->d_name[1] == '.' && !entry->d_name[2]))
|
---|
| 507 | && !(all_fmt & DISP_DOT)
|
---|
| 508 | ) {
|
---|
| 509 | continue;
|
---|
| 510 | }
|
---|
[821] | 511 | if (!(all_fmt & DISP_HIDDEN))
|
---|
[1765] | 512 | continue;
|
---|
[821] | 513 | }
|
---|
| 514 | fullname = concat_path_file(path, entry->d_name);
|
---|
[1765] | 515 | cur = my_stat(fullname, bb_basename(fullname), 0);
|
---|
| 516 | if (!cur) {
|
---|
| 517 | free(fullname);
|
---|
[821] | 518 | continue;
|
---|
[1765] | 519 | }
|
---|
[821] | 520 | cur->allocated = 1;
|
---|
| 521 | cur->next = dn;
|
---|
| 522 | dn = cur;
|
---|
| 523 | nfiles++;
|
---|
| 524 | }
|
---|
| 525 | closedir(dir);
|
---|
| 526 |
|
---|
| 527 | /* now that we know how many files there are
|
---|
[1765] | 528 | * allocate memory for an array to hold dnode pointers
|
---|
[821] | 529 | */
|
---|
| 530 | if (dn == NULL)
|
---|
[1765] | 531 | return NULL;
|
---|
[821] | 532 | dnp = dnalloc(nfiles);
|
---|
| 533 | for (i = 0, cur = dn; i < nfiles; i++) {
|
---|
| 534 | dnp[i] = cur; /* save pointer to node in array */
|
---|
| 535 | cur = cur->next;
|
---|
| 536 | }
|
---|
| 537 |
|
---|
[1765] | 538 | return dnp;
|
---|
[821] | 539 | }
|
---|
| 540 |
|
---|
[1765] | 541 |
|
---|
| 542 | #if ENABLE_FEATURE_LS_TIMESTAMPS
|
---|
| 543 | /* Do time() just once. Saves one syscall per file for "ls -l" */
|
---|
| 544 | /* Initialized in main() */
|
---|
| 545 | static time_t current_time_t;
|
---|
| 546 | #endif
|
---|
| 547 |
|
---|
[821] | 548 | static int list_single(struct dnode *dn)
|
---|
| 549 | {
|
---|
| 550 | int i, column = 0;
|
---|
| 551 |
|
---|
[1765] | 552 | #if ENABLE_FEATURE_LS_TIMESTAMPS
|
---|
[821] | 553 | char *filetime;
|
---|
| 554 | time_t ttime, age;
|
---|
| 555 | #endif
|
---|
[1765] | 556 | #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
|
---|
[821] | 557 | struct stat info;
|
---|
| 558 | char append;
|
---|
| 559 | #endif
|
---|
| 560 |
|
---|
| 561 | if (dn->fullname == NULL)
|
---|
[1765] | 562 | return 0;
|
---|
[821] | 563 |
|
---|
[1765] | 564 | #if ENABLE_FEATURE_LS_TIMESTAMPS
|
---|
[821] | 565 | ttime = dn->dstat.st_mtime; /* the default time */
|
---|
| 566 | if (all_fmt & TIME_ACCESS)
|
---|
| 567 | ttime = dn->dstat.st_atime;
|
---|
| 568 | if (all_fmt & TIME_CHANGE)
|
---|
| 569 | ttime = dn->dstat.st_ctime;
|
---|
| 570 | filetime = ctime(&ttime);
|
---|
| 571 | #endif
|
---|
[1765] | 572 | #if ENABLE_FEATURE_LS_FILETYPES
|
---|
[821] | 573 | append = append_char(dn->dstat.st_mode);
|
---|
| 574 | #endif
|
---|
| 575 |
|
---|
| 576 | for (i = 0; i <= 31; i++) {
|
---|
| 577 | switch (all_fmt & (1 << i)) {
|
---|
| 578 | case LIST_INO:
|
---|
[1765] | 579 | column += printf("%7ld ", (long) dn->dstat.st_ino);
|
---|
[821] | 580 | break;
|
---|
| 581 | case LIST_BLOCKS:
|
---|
[1765] | 582 | column += printf("%4"OFF_FMT"d ", (off_t) dn->dstat.st_blocks >> 1);
|
---|
[821] | 583 | break;
|
---|
| 584 | case LIST_MODEBITS:
|
---|
| 585 | column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
|
---|
| 586 | break;
|
---|
| 587 | case LIST_NLINKS:
|
---|
| 588 | column += printf("%4ld ", (long) dn->dstat.st_nlink);
|
---|
| 589 | break;
|
---|
| 590 | case LIST_ID_NAME:
|
---|
[1765] | 591 | #if ENABLE_FEATURE_LS_USERNAME
|
---|
| 592 | printf("%-8.8s %-8.8s",
|
---|
| 593 | get_cached_username(dn->dstat.st_uid),
|
---|
| 594 | get_cached_groupname(dn->dstat.st_gid));
|
---|
[821] | 595 | column += 17;
|
---|
| 596 | break;
|
---|
| 597 | #endif
|
---|
| 598 | case LIST_ID_NUMERIC:
|
---|
| 599 | column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
|
---|
| 600 | break;
|
---|
| 601 | case LIST_SIZE:
|
---|
| 602 | case LIST_DEV:
|
---|
| 603 | if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
|
---|
| 604 | column += printf("%4d, %3d ", (int) major(dn->dstat.st_rdev),
|
---|
| 605 | (int) minor(dn->dstat.st_rdev));
|
---|
| 606 | } else {
|
---|
| 607 | if (all_fmt & LS_DISP_HR) {
|
---|
| 608 | column += printf("%9s ",
|
---|
[1765] | 609 | make_human_readable_str(dn->dstat.st_size, 1, 0));
|
---|
| 610 | } else {
|
---|
| 611 | column += printf("%9"OFF_FMT"d ", (off_t) dn->dstat.st_size);
|
---|
[821] | 612 | }
|
---|
| 613 | }
|
---|
| 614 | break;
|
---|
[1765] | 615 | #if ENABLE_FEATURE_LS_TIMESTAMPS
|
---|
[821] | 616 | case LIST_FULLTIME:
|
---|
| 617 | printf("%24.24s ", filetime);
|
---|
| 618 | column += 25;
|
---|
| 619 | break;
|
---|
| 620 | case LIST_DATE_TIME:
|
---|
| 621 | if ((all_fmt & LIST_FULLTIME) == 0) {
|
---|
[1765] | 622 | /* current_time_t ~== time(NULL) */
|
---|
| 623 | age = current_time_t - ttime;
|
---|
[821] | 624 | printf("%6.6s ", filetime + 4);
|
---|
| 625 | if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
|
---|
| 626 | /* hh:mm if less than 6 months old */
|
---|
| 627 | printf("%5.5s ", filetime + 11);
|
---|
| 628 | } else {
|
---|
| 629 | printf(" %4.4s ", filetime + 20);
|
---|
| 630 | }
|
---|
| 631 | column += 13;
|
---|
| 632 | }
|
---|
| 633 | break;
|
---|
| 634 | #endif
|
---|
[1765] | 635 | #if ENABLE_SELINUX
|
---|
[821] | 636 | case LIST_CONTEXT:
|
---|
| 637 | {
|
---|
| 638 | char context[80];
|
---|
| 639 | int len = 0;
|
---|
| 640 |
|
---|
| 641 | if (dn->sid) {
|
---|
[1765] | 642 | /* I assume sid initilized with NULL */
|
---|
| 643 | len = strlen(dn->sid) + 1;
|
---|
| 644 | safe_strncpy(context, dn->sid, len);
|
---|
| 645 | freecon(dn->sid);
|
---|
| 646 | } else {
|
---|
| 647 | safe_strncpy(context, "unknown", 8);
|
---|
[821] | 648 | }
|
---|
| 649 | printf("%-32s ", context);
|
---|
| 650 | column += MAX(33, len);
|
---|
| 651 | }
|
---|
| 652 | break;
|
---|
| 653 | #endif
|
---|
| 654 | case LIST_FILENAME:
|
---|
| 655 | errno = 0;
|
---|
[1765] | 656 | #if ENABLE_FEATURE_LS_COLOR
|
---|
[821] | 657 | if (show_color && !lstat(dn->fullname, &info)) {
|
---|
| 658 | printf("\033[%d;%dm", bgcolor(info.st_mode),
|
---|
[1765] | 659 | fgcolor(info.st_mode));
|
---|
[821] | 660 | }
|
---|
| 661 | #endif
|
---|
| 662 | column += printf("%s", dn->name);
|
---|
| 663 | if (show_color) {
|
---|
| 664 | printf("\033[0m");
|
---|
| 665 | }
|
---|
| 666 | break;
|
---|
| 667 | case LIST_SYMLINK:
|
---|
| 668 | if (S_ISLNK(dn->dstat.st_mode)) {
|
---|
[1765] | 669 | char *lpath = xmalloc_readlink_or_warn(dn->fullname);
|
---|
| 670 | if (!lpath) break;
|
---|
| 671 | printf(" -> ");
|
---|
| 672 | #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
|
---|
| 673 | if (!stat(dn->fullname, &info)) {
|
---|
| 674 | append = append_char(info.st_mode);
|
---|
| 675 | }
|
---|
[821] | 676 | #endif
|
---|
[1765] | 677 | #if ENABLE_FEATURE_LS_COLOR
|
---|
| 678 | if (show_color) {
|
---|
| 679 | errno = 0;
|
---|
| 680 | printf("\033[%d;%dm", bgcolor(info.st_mode),
|
---|
| 681 | fgcolor(info.st_mode));
|
---|
| 682 | }
|
---|
[821] | 683 | #endif
|
---|
[1765] | 684 | column += printf("%s", lpath) + 4;
|
---|
| 685 | if (show_color) {
|
---|
| 686 | printf("\033[0m");
|
---|
[821] | 687 | }
|
---|
[1765] | 688 | free(lpath);
|
---|
[821] | 689 | }
|
---|
| 690 | break;
|
---|
[1765] | 691 | #if ENABLE_FEATURE_LS_FILETYPES
|
---|
[821] | 692 | case LIST_FILETYPE:
|
---|
[1765] | 693 | if (append) {
|
---|
| 694 | putchar(append);
|
---|
[821] | 695 | column++;
|
---|
| 696 | }
|
---|
| 697 | break;
|
---|
| 698 | #endif
|
---|
| 699 | }
|
---|
| 700 | }
|
---|
| 701 |
|
---|
| 702 | return column;
|
---|
| 703 | }
|
---|
| 704 |
|
---|
| 705 | /* "[-]Cadil1", POSIX mandated options, busybox always supports */
|
---|
| 706 | /* "[-]gnsx", POSIX non-mandated options, busybox always supports */
|
---|
| 707 | /* "[-]Ak" GNU options, busybox always supports */
|
---|
| 708 | /* "[-]FLRctur", POSIX mandated options, busybox optionally supports */
|
---|
| 709 | /* "[-]p", POSIX non-mandated options, busybox optionally supports */
|
---|
| 710 | /* "[-]SXvThw", GNU options, busybox optionally supports */
|
---|
| 711 | /* "[-]K", SELinux mandated options, busybox optionally supports */
|
---|
| 712 | /* "[-]e", I think we made this one up */
|
---|
[1765] | 713 | static const char ls_options[] ALIGN1 =
|
---|
| 714 | "Cadil1gnsxAk"
|
---|
| 715 | USE_FEATURE_LS_TIMESTAMPS("cetu")
|
---|
| 716 | USE_FEATURE_LS_SORTFILES("SXrv")
|
---|
| 717 | USE_FEATURE_LS_FILETYPES("Fp")
|
---|
| 718 | USE_FEATURE_LS_FOLLOWLINKS("L")
|
---|
| 719 | USE_FEATURE_LS_RECURSIVE("R")
|
---|
| 720 | USE_FEATURE_HUMAN_READABLE("h")
|
---|
| 721 | USE_SELINUX("K")
|
---|
| 722 | USE_FEATURE_AUTOWIDTH("T:w:")
|
---|
| 723 | USE_SELINUX("Z");
|
---|
[821] | 724 |
|
---|
[1765] | 725 | enum {
|
---|
| 726 | LIST_MASK_TRIGGER = 0,
|
---|
| 727 | STYLE_MASK_TRIGGER = STYLE_MASK,
|
---|
| 728 | DISP_MASK_TRIGGER = DISP_ROWS,
|
---|
| 729 | SORT_MASK_TRIGGER = SORT_MASK,
|
---|
| 730 | };
|
---|
[821] | 731 |
|
---|
| 732 | static const unsigned opt_flags[] = {
|
---|
[1765] | 733 | LIST_SHORT | STYLE_COLUMNS, /* C */
|
---|
| 734 | DISP_HIDDEN | DISP_DOT, /* a */
|
---|
| 735 | DISP_NOLIST, /* d */
|
---|
| 736 | LIST_INO, /* i */
|
---|
| 737 | LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
|
---|
| 738 | LIST_SHORT | STYLE_SINGLE, /* 1 */
|
---|
| 739 | 0, /* g - ingored */
|
---|
| 740 | LIST_ID_NUMERIC, /* n */
|
---|
| 741 | LIST_BLOCKS, /* s */
|
---|
| 742 | DISP_ROWS, /* x */
|
---|
| 743 | DISP_HIDDEN, /* A */
|
---|
| 744 | ENABLE_SELINUX * LIST_CONTEXT, /* k (ignored if !SELINUX) */
|
---|
| 745 | #if ENABLE_FEATURE_LS_TIMESTAMPS
|
---|
| 746 | TIME_CHANGE | (ENABLE_FEATURE_LS_SORTFILES * SORT_CTIME), /* c */
|
---|
| 747 | LIST_FULLTIME, /* e */
|
---|
| 748 | ENABLE_FEATURE_LS_SORTFILES * SORT_MTIME, /* t */
|
---|
| 749 | TIME_ACCESS | (ENABLE_FEATURE_LS_SORTFILES * SORT_ATIME), /* u */
|
---|
[821] | 750 | #endif
|
---|
[1765] | 751 | #if ENABLE_FEATURE_LS_SORTFILES
|
---|
| 752 | SORT_SIZE, /* S */
|
---|
| 753 | SORT_EXT, /* X */
|
---|
| 754 | SORT_REVERSE, /* r */
|
---|
| 755 | SORT_VERSION, /* v */
|
---|
[821] | 756 | #endif
|
---|
[1765] | 757 | #if ENABLE_FEATURE_LS_FILETYPES
|
---|
| 758 | LIST_FILETYPE | LIST_EXEC, /* F */
|
---|
| 759 | LIST_FILETYPE, /* p */
|
---|
[821] | 760 | #endif
|
---|
[1765] | 761 | #if ENABLE_FEATURE_LS_FOLLOWLINKS
|
---|
| 762 | FOLLOW_LINKS, /* L */
|
---|
[821] | 763 | #endif
|
---|
[1765] | 764 | #if ENABLE_FEATURE_LS_RECURSIVE
|
---|
| 765 | DISP_RECURSIVE, /* R */
|
---|
[821] | 766 | #endif
|
---|
[1765] | 767 | #if ENABLE_FEATURE_HUMAN_READABLE
|
---|
| 768 | LS_DISP_HR, /* h */
|
---|
[821] | 769 | #endif
|
---|
[1765] | 770 | #if ENABLE_SELINUX
|
---|
[821] | 771 | LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
|
---|
| 772 | #endif
|
---|
[1765] | 773 | #if ENABLE_FEATURE_AUTOWIDTH
|
---|
| 774 | 0, 0, /* T, w - ignored */
|
---|
[821] | 775 | #endif
|
---|
[1765] | 776 | #if ENABLE_SELINUX
|
---|
| 777 | LIST_MODEBITS|LIST_ID_NAME|LIST_CONTEXT, /* Z */
|
---|
| 778 | #endif
|
---|
[821] | 779 | (1U<<31)
|
---|
| 780 | };
|
---|
| 781 |
|
---|
| 782 |
|
---|
[1765] | 783 | /* THIS IS A "SAFE" APPLET, main() MAY BE CALLED INTERNALLY FROM SHELL */
|
---|
| 784 | /* BE CAREFUL! */
|
---|
[821] | 785 |
|
---|
[1765] | 786 | int ls_main(int argc, char **argv);
|
---|
[821] | 787 | int ls_main(int argc, char **argv)
|
---|
| 788 | {
|
---|
| 789 | struct dnode **dnd;
|
---|
| 790 | struct dnode **dnf;
|
---|
| 791 | struct dnode **dnp;
|
---|
| 792 | struct dnode *dn;
|
---|
| 793 | struct dnode *cur;
|
---|
[1765] | 794 | unsigned opt;
|
---|
[821] | 795 | int nfiles = 0;
|
---|
| 796 | int dnfiles;
|
---|
| 797 | int dndirs;
|
---|
| 798 | int oi;
|
---|
| 799 | int ac;
|
---|
| 800 | int i;
|
---|
| 801 | char **av;
|
---|
[1765] | 802 | USE_FEATURE_AUTOWIDTH(char *tabstops_str = NULL;)
|
---|
| 803 | USE_FEATURE_AUTOWIDTH(char *terminal_width_str = NULL;)
|
---|
| 804 | USE_FEATURE_LS_COLOR(char *color_opt;)
|
---|
| 805 |
|
---|
| 806 | #if ENABLE_FEATURE_LS_TIMESTAMPS
|
---|
| 807 | time(¤t_time_t);
|
---|
[821] | 808 | #endif
|
---|
| 809 |
|
---|
| 810 | all_fmt = LIST_SHORT |
|
---|
[1765] | 811 | (ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_FORWARD));
|
---|
[821] | 812 |
|
---|
[1765] | 813 | #if ENABLE_FEATURE_AUTOWIDTH
|
---|
| 814 | /* Obtain the terminal width */
|
---|
| 815 | get_terminal_width_height(STDIN_FILENO, &terminal_width, NULL);
|
---|
[821] | 816 | /* Go one less... */
|
---|
| 817 | terminal_width--;
|
---|
| 818 | #endif
|
---|
| 819 |
|
---|
| 820 | /* process options */
|
---|
[1765] | 821 | USE_FEATURE_LS_COLOR(applet_long_options = ls_color_opt;)
|
---|
| 822 | #if ENABLE_FEATURE_AUTOWIDTH
|
---|
| 823 | opt = getopt32(argv, ls_options, &tabstops_str, &terminal_width_str
|
---|
| 824 | USE_FEATURE_LS_COLOR(, &color_opt));
|
---|
| 825 | if (tabstops_str)
|
---|
| 826 | tabstops = xatou(tabstops_str);
|
---|
| 827 | if (terminal_width_str)
|
---|
| 828 | terminal_width = xatou(terminal_width_str);
|
---|
[821] | 829 | #else
|
---|
[1765] | 830 | opt = getopt32(argv, ls_options USE_FEATURE_LS_COLOR(, &color_opt));
|
---|
[821] | 831 | #endif
|
---|
| 832 | for (i = 0; opt_flags[i] != (1U<<31); i++) {
|
---|
| 833 | if (opt & (1 << i)) {
|
---|
[1765] | 834 | unsigned flags = opt_flags[i];
|
---|
[821] | 835 |
|
---|
[1765] | 836 | if (flags & LIST_MASK_TRIGGER)
|
---|
[821] | 837 | all_fmt &= ~LIST_MASK;
|
---|
[1765] | 838 | if (flags & STYLE_MASK_TRIGGER)
|
---|
[821] | 839 | all_fmt &= ~STYLE_MASK;
|
---|
[1765] | 840 | if (flags & SORT_MASK_TRIGGER)
|
---|
[821] | 841 | all_fmt &= ~SORT_MASK;
|
---|
[1765] | 842 | if (flags & DISP_MASK_TRIGGER)
|
---|
[821] | 843 | all_fmt &= ~DISP_MASK;
|
---|
[1765] | 844 | if (flags & TIME_MASK)
|
---|
[821] | 845 | all_fmt &= ~TIME_MASK;
|
---|
[1765] | 846 | if (flags & LIST_CONTEXT)
|
---|
[821] | 847 | all_fmt |= STYLE_SINGLE;
|
---|
[1765] | 848 | /* huh?? opt cannot be 'l' */
|
---|
| 849 | //if (LS_DISP_HR && opt == 'l')
|
---|
| 850 | // all_fmt &= ~LS_DISP_HR;
|
---|
[821] | 851 | all_fmt |= flags;
|
---|
| 852 | }
|
---|
| 853 | }
|
---|
| 854 |
|
---|
[1765] | 855 | #if ENABLE_FEATURE_LS_COLOR
|
---|
| 856 | /* find color bit value - last position for short getopt */
|
---|
| 857 | if (ENABLE_FEATURE_LS_COLOR_IS_DEFAULT && isatty(STDOUT_FILENO)) {
|
---|
| 858 | char *p = getenv("LS_COLORS");
|
---|
| 859 | /* LS_COLORS is unset, or (not empty && not "none") ? */
|
---|
| 860 | if (!p || (p[0] && strcmp(p, "none")))
|
---|
[821] | 861 | show_color = 1;
|
---|
| 862 | }
|
---|
[1765] | 863 | if (opt & (1 << i)) { /* next flag after short options */
|
---|
| 864 | if (!color_opt || !strcmp("always", color_opt))
|
---|
| 865 | show_color = 1;
|
---|
| 866 | else if (color_opt && !strcmp("never", color_opt))
|
---|
| 867 | show_color = 0;
|
---|
| 868 | else if (color_opt && !strcmp("auto", color_opt) && isatty(STDOUT_FILENO))
|
---|
| 869 | show_color = 1;
|
---|
| 870 | }
|
---|
[821] | 871 | #endif
|
---|
| 872 |
|
---|
| 873 | /* sort out which command line options take precedence */
|
---|
[1765] | 874 | if (ENABLE_FEATURE_LS_RECURSIVE && (all_fmt & DISP_NOLIST))
|
---|
[821] | 875 | all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
|
---|
| 876 | if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
|
---|
| 877 | if (all_fmt & TIME_CHANGE)
|
---|
| 878 | all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
|
---|
| 879 | if (all_fmt & TIME_ACCESS)
|
---|
| 880 | all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
|
---|
| 881 | }
|
---|
| 882 | if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
|
---|
| 883 | all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
|
---|
[1765] | 884 | if (ENABLE_FEATURE_LS_USERNAME)
|
---|
| 885 | if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
|
---|
| 886 | all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
|
---|
[821] | 887 |
|
---|
| 888 | /* choose a display format */
|
---|
| 889 | if (!(all_fmt & STYLE_MASK))
|
---|
| 890 | all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNS : STYLE_SINGLE);
|
---|
| 891 |
|
---|
| 892 | /*
|
---|
| 893 | * when there are no cmd line args we have to supply a default "." arg.
|
---|
| 894 | * we will create a second argv array, "av" that will hold either
|
---|
| 895 | * our created "." arg, or the real cmd line args. The av array
|
---|
| 896 | * just holds the pointers- we don't move the date the pointers
|
---|
| 897 | * point to.
|
---|
| 898 | */
|
---|
| 899 | ac = argc - optind; /* how many cmd line args are left */
|
---|
| 900 | if (ac < 1) {
|
---|
[1765] | 901 | static const char *const dotdir[] = { "." };
|
---|
[821] | 902 |
|
---|
| 903 | av = (char **) dotdir;
|
---|
| 904 | ac = 1;
|
---|
| 905 | } else {
|
---|
| 906 | av = argv + optind;
|
---|
| 907 | }
|
---|
| 908 |
|
---|
| 909 | /* now, everything is in the av array */
|
---|
| 910 | if (ac > 1)
|
---|
| 911 | all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
|
---|
| 912 |
|
---|
[1765] | 913 | /* stuff the command line file names into a dnode array */
|
---|
[821] | 914 | dn = NULL;
|
---|
| 915 | for (oi = 0; oi < ac; oi++) {
|
---|
[1765] | 916 | /* ls w/o -l follows links on command line */
|
---|
| 917 | cur = my_stat(av[oi], av[oi], !(all_fmt & STYLE_LONG));
|
---|
[821] | 918 | if (!cur)
|
---|
| 919 | continue;
|
---|
| 920 | cur->allocated = 0;
|
---|
| 921 | cur->next = dn;
|
---|
| 922 | dn = cur;
|
---|
| 923 | nfiles++;
|
---|
| 924 | }
|
---|
| 925 |
|
---|
| 926 | /* now that we know how many files there are
|
---|
[1765] | 927 | * allocate memory for an array to hold dnode pointers
|
---|
[821] | 928 | */
|
---|
| 929 | dnp = dnalloc(nfiles);
|
---|
| 930 | for (i = 0, cur = dn; i < nfiles; i++) {
|
---|
| 931 | dnp[i] = cur; /* save pointer to node in array */
|
---|
| 932 | cur = cur->next;
|
---|
| 933 | }
|
---|
| 934 |
|
---|
| 935 | if (all_fmt & DISP_NOLIST) {
|
---|
[1765] | 936 | dnsort(dnp, nfiles);
|
---|
[821] | 937 | if (nfiles > 0)
|
---|
| 938 | showfiles(dnp, nfiles);
|
---|
| 939 | } else {
|
---|
| 940 | dnd = splitdnarray(dnp, nfiles, SPLIT_DIR);
|
---|
| 941 | dnf = splitdnarray(dnp, nfiles, SPLIT_FILE);
|
---|
| 942 | dndirs = countdirs(dnp, nfiles);
|
---|
| 943 | dnfiles = nfiles - dndirs;
|
---|
| 944 | if (dnfiles > 0) {
|
---|
[1765] | 945 | dnsort(dnf, dnfiles);
|
---|
[821] | 946 | showfiles(dnf, dnfiles);
|
---|
| 947 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 948 | free(dnf);
|
---|
| 949 | }
|
---|
| 950 | if (dndirs > 0) {
|
---|
[1765] | 951 | dnsort(dnd, dndirs);
|
---|
[821] | 952 | showdirs(dnd, dndirs, dnfiles == 0);
|
---|
| 953 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 954 | free(dnd);
|
---|
| 955 | }
|
---|
| 956 | }
|
---|
| 957 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 958 | dfree(dnp, nfiles);
|
---|
[1765] | 959 | return status;
|
---|
[821] | 960 | }
|
---|