d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
1077 lines
28 KiB
C
1077 lines
28 KiB
C
/* vi: set sw=4 ts=4: */
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|
/*
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* tiny-ls.c version 0.1.0: A minimalist 'ls'
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* Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/*
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* To achieve a small memory footprint, this version of 'ls' doesn't do any
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* file sorting, and only has the most essential command line switches
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* (i.e., the ones I couldn't live without :-) All features which involve
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* linking in substantial chunks of libc can be disabled.
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*
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* Although I don't really want to add new features to this program to
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* keep it small, I *am* interested to receive bug fixes and ways to make
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* it more portable.
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*
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* KNOWN BUGS:
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* 1. ls -l of a directory doesn't give "total <blocks>" header
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* 2. ls of a symlink to a directory doesn't list directory contents
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* 3. hidden files can make column width too large
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*
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* NON-OPTIMAL BEHAVIOUR:
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* 1. autowidth reads directories twice
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* 2. if you do a short directory listing without filetype characters
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* appended, there's no need to stat each one
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* PORTABILITY:
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* 1. requires lstat (BSD) - how do you do it without?
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*/
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enum {
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TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
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COLUMN_GAP = 2, /* includes the file type char */
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};
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/************************************************************************/
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#include "busybox.h"
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#include <getopt.h>
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/* what is the overall style of the listing */
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#define STYLE_COLUMNS (1U<<21) /* fill columns */
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#define STYLE_LONG (2U<<21) /* one record per line, extended info */
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#define STYLE_SINGLE (3U<<21) /* one record per line */
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#define STYLE_MASK STYLE_SINGLE
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#define STYLE_ONE_RECORD_FLAG STYLE_LONG
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/* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
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/* what file information will be listed */
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#define LIST_INO (1U<<0)
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#define LIST_BLOCKS (1U<<1)
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#define LIST_MODEBITS (1U<<2)
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#define LIST_NLINKS (1U<<3)
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#define LIST_ID_NAME (1U<<4)
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#define LIST_ID_NUMERIC (1U<<5)
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#define LIST_CONTEXT (1U<<6)
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#define LIST_SIZE (1U<<7)
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#define LIST_DEV (1U<<8)
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#define LIST_DATE_TIME (1U<<9)
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#define LIST_FULLTIME (1U<<10)
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#define LIST_FILENAME (1U<<11)
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#define LIST_SYMLINK (1U<<12)
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#define LIST_FILETYPE (1U<<13)
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#define LIST_EXEC (1U<<14)
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#define LIST_MASK ((LIST_EXEC << 1) - 1)
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/* what files will be displayed */
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#define DISP_DIRNAME (1U<<15) /* 2 or more items? label directories */
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#define DISP_HIDDEN (1U<<16) /* show filenames starting with . */
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#define DISP_DOT (1U<<17) /* show . and .. */
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#define DISP_NOLIST (1U<<18) /* show directory as itself, not contents */
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#define DISP_RECURSIVE (1U<<19) /* show directory and everything below it */
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#define DISP_ROWS (1U<<20) /* print across rows */
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#define DISP_MASK (((DISP_ROWS << 1) - 1) & ~(DISP_DIRNAME - 1))
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// CONFIG_FEATURE_LS_SORTFILES
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/* how will the files be sorted */
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#define SORT_ORDER_FORWARD 0 /* sort in reverse order */
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#define SORT_ORDER_REVERSE (1U<<27) /* sort in reverse order */
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|
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#define SORT_NAME 0 /* sort by file name */
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#define SORT_SIZE (1U<<28) /* sort by file size */
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#define SORT_ATIME (2U<<28) /* sort by last access time */
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#define SORT_CTIME (3U<<28) /* sort by last change time */
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#define SORT_MTIME (4U<<28) /* sort by last modification time */
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#define SORT_VERSION (5U<<28) /* sort by version */
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#define SORT_EXT (6U<<28) /* sort by file name extension */
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#define SORT_DIR (7U<<28) /* sort by file or directory */
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#define SORT_MASK (7U<<28)
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/* which of the three times will be used */
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#define TIME_CHANGE ((1U<<23) * ENABLE_FEATURE_LS_TIMESTAMPS)
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#define TIME_ACCESS ((1U<<24) * ENABLE_FEATURE_LS_TIMESTAMPS)
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#define TIME_MASK ((3U<<23) * ENABLE_FEATURE_LS_TIMESTAMPS)
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|
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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#define FOLLOW_LINKS (1U<<25)
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#endif
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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#define LS_DISP_HR (1U<<26)
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#endif
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#define LIST_SHORT (LIST_FILENAME)
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#define LIST_ISHORT (LIST_INO | LIST_FILENAME)
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#define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
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LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK)
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#define LIST_ILONG (LIST_INO | LIST_LONG)
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#define SPLIT_DIR 1
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#define SPLIT_FILE 0
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#define SPLIT_SUBDIR 2
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#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
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#define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
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#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
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# define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
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#endif
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/* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
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#ifdef CONFIG_FEATURE_LS_COLOR
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static int show_color = 0;
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|
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/* long option entry used only for --color, which has no short option
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* equivalent. */
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static const struct option ls_color_opt[] =
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{
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{"color", optional_argument, NULL, 1},
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{NULL, 0, NULL, 0}
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};
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#define COLOR(mode) ("\000\043\043\043\042\000\043\043"\
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"\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
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#define ATTR(mode) ("\00\00\01\00\01\00\01\00"\
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"\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)])
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#endif
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/*
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* a directory entry and its stat info are stored here
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*/
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struct dnode { /* the basic node */
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char *name; /* the dir entry name */
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char *fullname; /* the dir entry name */
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int allocated;
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struct stat dstat; /* the file stat info */
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#ifdef CONFIG_SELINUX
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security_context_t sid;
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#endif
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struct dnode *next; /* point at the next node */
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};
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typedef struct dnode dnode_t;
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static struct dnode **list_dir(const char *);
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static struct dnode **dnalloc(int);
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static int list_single(struct dnode *);
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static unsigned int all_fmt;
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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static int terminal_width = TERMINAL_WIDTH;
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static unsigned short tabstops = COLUMN_GAP;
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#else
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#define tabstops COLUMN_GAP
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#define terminal_width TERMINAL_WIDTH
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#endif
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static int status = EXIT_SUCCESS;
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static struct dnode *my_stat(char *fullname, char *name)
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{
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struct stat dstat;
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struct dnode *cur;
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#ifdef CONFIG_SELINUX
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security_context_t sid=NULL;
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#endif
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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if (all_fmt & FOLLOW_LINKS) {
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#ifdef CONFIG_SELINUX
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if (is_selinux_enabled()) {
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getfilecon(fullname,&sid);
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}
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#endif
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if (stat(fullname, &dstat)) {
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bb_perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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}
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} else
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#endif
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{
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#ifdef CONFIG_SELINUX
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if (is_selinux_enabled()) {
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lgetfilecon(fullname,&sid);
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}
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#endif
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if (lstat(fullname, &dstat)) {
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bb_perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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}
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}
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cur = (struct dnode *) xmalloc(sizeof(struct dnode));
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cur->fullname = fullname;
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cur->name = name;
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cur->dstat = dstat;
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#ifdef CONFIG_SELINUX
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cur->sid = sid;
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#endif
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return cur;
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}
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/*----------------------------------------------------------------------*/
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#ifdef CONFIG_FEATURE_LS_COLOR
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static char fgcolor(mode_t mode)
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{
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/* Check wheter the file is existing (if so, color it red!) */
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if (errno == ENOENT) {
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return '\037';
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}
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if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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return COLOR(0xF000); /* File is executable ... */
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return COLOR(mode);
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}
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/*----------------------------------------------------------------------*/
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static char bgcolor(mode_t mode)
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{
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if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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return ATTR(0xF000); /* File is executable ... */
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return ATTR(mode);
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}
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#endif
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/*----------------------------------------------------------------------*/
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#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
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static char append_char(mode_t mode)
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{
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if (!(all_fmt & LIST_FILETYPE))
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return '\0';
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if (S_ISDIR(mode))
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return '/';
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if (!(all_fmt & LIST_EXEC))
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return '\0';
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if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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return '*';
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return APPCHAR(mode);
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}
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#endif
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/*----------------------------------------------------------------------*/
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#define countdirs(A,B) count_dirs((A), (B), 1)
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#define countsubdirs(A,B) count_dirs((A), (B), 0)
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static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs)
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{
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int i, dirs;
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if (dn == NULL || nfiles < 1)
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return (0);
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dirs = 0;
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for (i = 0; i < nfiles; i++) {
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if (S_ISDIR(dn[i]->dstat.st_mode)
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&& (notsubdirs ||
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((dn[i]->name[0] != '.') || (dn[i]->name[1]
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&& ((dn[i]->name[1] != '.')
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|| dn[i]->name[2])))))
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dirs++;
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}
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return (dirs);
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}
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static int countfiles(struct dnode **dnp)
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{
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|
int nfiles;
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struct dnode *cur;
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if (dnp == NULL)
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|
return (0);
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nfiles = 0;
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for (cur = dnp[0]; cur->next != NULL; cur = cur->next)
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nfiles++;
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nfiles++;
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return (nfiles);
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}
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|
|
/* get memory to hold an array of pointers */
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static struct dnode **dnalloc(int num)
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{
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|
struct dnode **p;
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|
if (num < 1)
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return (NULL);
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|
p = (struct dnode **) xcalloc((size_t) num, (size_t) (sizeof(struct dnode *)));
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return (p);
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|
}
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|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
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|
static void dfree(struct dnode **dnp, int nfiles)
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|
{
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|
int i;
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|
|
if (dnp == NULL)
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|
return;
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|
|
for (i = 0; i < nfiles; i++) {
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struct dnode *cur = dnp[i];
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if(cur->allocated)
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free(cur->fullname); /* free the filename */
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free(cur); /* free the dnode */
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}
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free(dnp); /* free the array holding the dnode pointers */
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}
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#else
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#define dfree(...)
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|
#endif
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|
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static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
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|
{
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|
int dncnt, i, d;
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struct dnode **dnp;
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|
|
if (dn == NULL || nfiles < 1)
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return (NULL);
|
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|
|
/* count how many dirs and regular files there are */
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if (which == SPLIT_SUBDIR)
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dncnt = countsubdirs(dn, nfiles);
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else {
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dncnt = countdirs(dn, nfiles); /* assume we are looking for dirs */
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if (which == SPLIT_FILE)
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dncnt = nfiles - dncnt; /* looking for files */
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}
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/* allocate a file array and a dir array */
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dnp = dnalloc(dncnt);
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|
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/* copy the entrys into the file or dir array */
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for (d = i = 0; i < nfiles; i++) {
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if (S_ISDIR(dn[i]->dstat.st_mode)) {
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if (which & (SPLIT_DIR|SPLIT_SUBDIR)) {
|
|
if ((which & SPLIT_DIR)
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|| ((dn[i]->name[0] != '.')
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|| (dn[i]->name[1]
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&& ((dn[i]->name[1] != '.')
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|| dn[i]->name[2])))) {
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dnp[d++] = dn[i];
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}
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|
}
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|
} else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
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dnp[d++] = dn[i];
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}
|
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}
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return (dnp);
|
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}
|
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|
|
/*----------------------------------------------------------------------*/
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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static int sortcmp(const void *a, const void *b)
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|
{
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|
struct dnode *d1 = *(struct dnode **)a;
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|
struct dnode *d2 = *(struct dnode **)b;
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|
unsigned int sort_opts = all_fmt & SORT_MASK;
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|
int dif;
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dif = 0; /* assume SORT_NAME */
|
|
if (sort_opts == SORT_SIZE) {
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|
dif = (int) (d2->dstat.st_size - d1->dstat.st_size);
|
|
} else if (sort_opts == SORT_ATIME) {
|
|
dif = (int) (d2->dstat.st_atime - d1->dstat.st_atime);
|
|
} else if (sort_opts == SORT_CTIME) {
|
|
dif = (int) (d2->dstat.st_ctime - d1->dstat.st_ctime);
|
|
} else if (sort_opts == SORT_MTIME) {
|
|
dif = (int) (d2->dstat.st_mtime - d1->dstat.st_mtime);
|
|
} else if (sort_opts == SORT_DIR) {
|
|
dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
|
|
/* } else if (sort_opts == SORT_VERSION) { */
|
|
/* } else if (sort_opts == SORT_EXT) { */
|
|
}
|
|
|
|
if (dif == 0) {
|
|
/* sort by name- may be a tie_breaker for time or size cmp */
|
|
if (ENABLE_LOCALE_SUPPORT) dif = strcoll(d1->name, d2->name);
|
|
else dif = strcmp(d1->name, d2->name);
|
|
}
|
|
|
|
if (all_fmt & SORT_ORDER_REVERSE) {
|
|
dif = -dif;
|
|
}
|
|
return (dif);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static void dnsort(struct dnode **dn, int size)
|
|
{
|
|
qsort(dn, size, sizeof *dn, sortcmp);
|
|
}
|
|
#else
|
|
#define sortcmp(a, b) 0
|
|
#define dnsort(dn, size)
|
|
#endif
|
|
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static void showfiles(struct dnode **dn, int nfiles)
|
|
{
|
|
int i, ncols, nrows, row, nc;
|
|
int column = 0;
|
|
int nexttab = 0;
|
|
int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
|
|
|
|
if (dn == NULL || nfiles < 1)
|
|
return;
|
|
|
|
if (all_fmt & STYLE_ONE_RECORD_FLAG) {
|
|
ncols = 1;
|
|
} else {
|
|
/* find the longest file name- use that as the column width */
|
|
for (i = 0; i < nfiles; i++) {
|
|
int len = strlen(dn[i]->name) +
|
|
#ifdef CONFIG_SELINUX
|
|
((all_fmt & LIST_CONTEXT) ? 33 : 0) +
|
|
#endif
|
|
((all_fmt & LIST_INO) ? 8 : 0) +
|
|
((all_fmt & LIST_BLOCKS) ? 5 : 0);
|
|
if (column_width < len)
|
|
column_width = len;
|
|
}
|
|
column_width += tabstops;
|
|
ncols = (int) (terminal_width / column_width);
|
|
}
|
|
|
|
if (ncols > 1) {
|
|
nrows = nfiles / ncols;
|
|
if ((nrows * ncols) < nfiles)
|
|
nrows++; /* round up fractionals */
|
|
} else {
|
|
nrows = nfiles;
|
|
ncols = 1;
|
|
}
|
|
|
|
for (row = 0; row < nrows; row++) {
|
|
for (nc = 0; nc < ncols; nc++) {
|
|
/* reach into the array based on the column and row */
|
|
i = (nc * nrows) + row; /* assume display by column */
|
|
if (all_fmt & DISP_ROWS)
|
|
i = (row * ncols) + nc; /* display across row */
|
|
if (i < nfiles) {
|
|
if (column > 0) {
|
|
nexttab -= column;
|
|
while (nexttab--) {
|
|
putchar(' ');
|
|
column++;
|
|
}
|
|
}
|
|
nexttab = column + column_width;
|
|
column += list_single(dn[i]);
|
|
}
|
|
}
|
|
putchar('\n');
|
|
column = 0;
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static void showdirs(struct dnode **dn, int ndirs, int first)
|
|
{
|
|
int i, nfiles;
|
|
struct dnode **subdnp;
|
|
int dndirs;
|
|
struct dnode **dnd;
|
|
|
|
if (dn == NULL || ndirs < 1)
|
|
return;
|
|
|
|
for (i = 0; i < ndirs; i++) {
|
|
if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
|
|
if (!first)
|
|
printf("\n");
|
|
first = 0;
|
|
printf("%s:\n", dn[i]->fullname);
|
|
}
|
|
subdnp = list_dir(dn[i]->fullname);
|
|
nfiles = countfiles(subdnp);
|
|
if (nfiles > 0) {
|
|
/* list all files at this level */
|
|
if (ENABLE_FEATURE_LS_SORTFILES) dnsort(subdnp, nfiles);
|
|
showfiles(subdnp, nfiles);
|
|
if (ENABLE_FEATURE_LS_RECURSIVE) {
|
|
if (all_fmt & DISP_RECURSIVE) {
|
|
/* recursive- list the sub-dirs */
|
|
dnd = splitdnarray(subdnp, nfiles, SPLIT_SUBDIR);
|
|
dndirs = countsubdirs(subdnp, nfiles);
|
|
if (dndirs > 0) {
|
|
if (ENABLE_FEATURE_LS_SORTFILES) dnsort(dnd, dndirs);
|
|
showdirs(dnd, dndirs, 0);
|
|
/* free the array of dnode pointers to the dirs */
|
|
free(dnd);
|
|
}
|
|
}
|
|
/* free the dnodes and the fullname mem */
|
|
dfree(subdnp, nfiles);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static struct dnode **list_dir(const char *path)
|
|
{
|
|
struct dnode *dn, *cur, **dnp;
|
|
struct dirent *entry;
|
|
DIR *dir;
|
|
int i, nfiles;
|
|
|
|
if (path == NULL)
|
|
return (NULL);
|
|
|
|
dn = NULL;
|
|
nfiles = 0;
|
|
dir = warn_opendir(path);
|
|
if (dir == NULL) {
|
|
status = EXIT_FAILURE;
|
|
return (NULL); /* could not open the dir */
|
|
}
|
|
while ((entry = readdir(dir)) != NULL) {
|
|
char *fullname;
|
|
|
|
/* are we going to list the file- it may be . or .. or a hidden file */
|
|
if (entry->d_name[0] == '.') {
|
|
if ((entry->d_name[1] == 0 || (
|
|
entry->d_name[1] == '.'
|
|
&& entry->d_name[2] == 0))
|
|
&& !(all_fmt & DISP_DOT))
|
|
continue;
|
|
if (!(all_fmt & DISP_HIDDEN))
|
|
continue;
|
|
}
|
|
fullname = concat_path_file(path, entry->d_name);
|
|
cur = my_stat(fullname, strrchr(fullname, '/') + 1);
|
|
if (!cur)
|
|
continue;
|
|
cur->allocated = 1;
|
|
cur->next = dn;
|
|
dn = cur;
|
|
nfiles++;
|
|
}
|
|
closedir(dir);
|
|
|
|
/* now that we know how many files there are
|
|
** allocate memory for an array to hold dnode pointers
|
|
*/
|
|
if (dn == NULL)
|
|
return (NULL);
|
|
dnp = dnalloc(nfiles);
|
|
for (i = 0, cur = dn; i < nfiles; i++) {
|
|
dnp[i] = cur; /* save pointer to node in array */
|
|
cur = cur->next;
|
|
}
|
|
|
|
return (dnp);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static int list_single(struct dnode *dn)
|
|
{
|
|
int i, column = 0;
|
|
|
|
#ifdef CONFIG_FEATURE_LS_USERNAME
|
|
char scratch[16];
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
char *filetime;
|
|
time_t ttime, age;
|
|
#endif
|
|
#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
|
|
struct stat info;
|
|
char append;
|
|
#endif
|
|
|
|
if (dn->fullname == NULL)
|
|
return (0);
|
|
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
ttime = dn->dstat.st_mtime; /* the default time */
|
|
if (all_fmt & TIME_ACCESS)
|
|
ttime = dn->dstat.st_atime;
|
|
if (all_fmt & TIME_CHANGE)
|
|
ttime = dn->dstat.st_ctime;
|
|
filetime = ctime(&ttime);
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_FILETYPES
|
|
append = append_char(dn->dstat.st_mode);
|
|
#endif
|
|
|
|
for (i = 0; i <= 31; i++) {
|
|
switch (all_fmt & (1 << i)) {
|
|
case LIST_INO:
|
|
column += printf("%7ld ", (long int) dn->dstat.st_ino);
|
|
break;
|
|
case LIST_BLOCKS:
|
|
#if _FILE_OFFSET_BITS == 64
|
|
column += printf("%4lld ", (long long)dn->dstat.st_blocks >> 1);
|
|
#else
|
|
column += printf("%4ld ", dn->dstat.st_blocks >> 1);
|
|
#endif
|
|
break;
|
|
case LIST_MODEBITS:
|
|
column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
|
|
break;
|
|
case LIST_NLINKS:
|
|
column += printf("%4ld ", (long) dn->dstat.st_nlink);
|
|
break;
|
|
case LIST_ID_NAME:
|
|
#ifdef CONFIG_FEATURE_LS_USERNAME
|
|
bb_getpwuid(scratch, dn->dstat.st_uid, sizeof(scratch));
|
|
printf("%-8.8s ", scratch);
|
|
bb_getgrgid(scratch, dn->dstat.st_gid, sizeof(scratch));
|
|
printf("%-8.8s", scratch);
|
|
column += 17;
|
|
break;
|
|
#endif
|
|
case LIST_ID_NUMERIC:
|
|
column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
|
|
break;
|
|
case LIST_SIZE:
|
|
case LIST_DEV:
|
|
if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
|
|
column += printf("%4d, %3d ", (int) major(dn->dstat.st_rdev),
|
|
(int) minor(dn->dstat.st_rdev));
|
|
} else {
|
|
#ifdef CONFIG_FEATURE_HUMAN_READABLE
|
|
if (all_fmt & LS_DISP_HR) {
|
|
column += printf("%9s ",
|
|
make_human_readable_str(dn->dstat.st_size, 1, 0));
|
|
} else
|
|
#endif
|
|
{
|
|
#if _FILE_OFFSET_BITS == 64
|
|
column += printf("%9lld ", (long long) dn->dstat.st_size);
|
|
#else
|
|
column += printf("%9ld ", dn->dstat.st_size);
|
|
#endif
|
|
}
|
|
}
|
|
break;
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
case LIST_FULLTIME:
|
|
printf("%24.24s ", filetime);
|
|
column += 25;
|
|
break;
|
|
case LIST_DATE_TIME:
|
|
if ((all_fmt & LIST_FULLTIME) == 0) {
|
|
age = time(NULL) - ttime;
|
|
printf("%6.6s ", filetime + 4);
|
|
if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
|
|
/* hh:mm if less than 6 months old */
|
|
printf("%5.5s ", filetime + 11);
|
|
} else {
|
|
printf(" %4.4s ", filetime + 20);
|
|
}
|
|
column += 13;
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SELINUX
|
|
case LIST_CONTEXT:
|
|
{
|
|
char context[80];
|
|
int len = 0;
|
|
|
|
if (dn->sid) {
|
|
/* I assume sid initilized with NULL */
|
|
len = strlen(dn->sid)+1;
|
|
safe_strncpy(context, dn->sid, len);
|
|
freecon(dn->sid);
|
|
}else {
|
|
safe_strncpy(context, "unknown", 8);
|
|
}
|
|
printf("%-32s ", context);
|
|
column += MAX(33, len);
|
|
}
|
|
break;
|
|
#endif
|
|
case LIST_FILENAME:
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
errno = 0;
|
|
if (show_color && !lstat(dn->fullname, &info)) {
|
|
printf("\033[%d;%dm", bgcolor(info.st_mode),
|
|
fgcolor(info.st_mode));
|
|
}
|
|
#endif
|
|
column += printf("%s", dn->name);
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (show_color) {
|
|
printf("\033[0m");
|
|
}
|
|
#endif
|
|
break;
|
|
case LIST_SYMLINK:
|
|
if (S_ISLNK(dn->dstat.st_mode)) {
|
|
char *lpath = xreadlink(dn->fullname);
|
|
|
|
if (lpath) {
|
|
printf(" -> ");
|
|
#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
|
|
if (!stat(dn->fullname, &info)) {
|
|
append = append_char(info.st_mode);
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (show_color) {
|
|
errno = 0;
|
|
printf("\033[%d;%dm", bgcolor(info.st_mode),
|
|
fgcolor(info.st_mode));
|
|
}
|
|
#endif
|
|
column += printf("%s", lpath) + 4;
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (show_color) {
|
|
printf("\033[0m");
|
|
}
|
|
#endif
|
|
free(lpath);
|
|
}
|
|
}
|
|
break;
|
|
#ifdef CONFIG_FEATURE_LS_FILETYPES
|
|
case LIST_FILETYPE:
|
|
if (append != '\0') {
|
|
printf("%1c", append);
|
|
column++;
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return column;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
|
|
/* "[-]Cadil1", POSIX mandated options, busybox always supports */
|
|
/* "[-]gnsx", POSIX non-mandated options, busybox always supports */
|
|
/* "[-]Ak" GNU options, busybox always supports */
|
|
/* "[-]FLRctur", POSIX mandated options, busybox optionally supports */
|
|
/* "[-]p", POSIX non-mandated options, busybox optionally supports */
|
|
/* "[-]SXvThw", GNU options, busybox optionally supports */
|
|
/* "[-]K", SELinux mandated options, busybox optionally supports */
|
|
/* "[-]e", I think we made this one up */
|
|
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
# define LS_STR_TIMESTAMPS "cetu"
|
|
#else
|
|
# define LS_STR_TIMESTAMPS ""
|
|
#endif
|
|
|
|
#ifdef CONFIG_FEATURE_LS_FILETYPES
|
|
# define LS_STR_FILETYPES "Fp"
|
|
#else
|
|
# define LS_STR_FILETYPES ""
|
|
#endif
|
|
|
|
#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
|
|
# define LS_STR_FOLLOW_LINKS "L"
|
|
#else
|
|
# define LS_STR_FOLLOW_LINKS ""
|
|
#endif
|
|
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
# define LS_STR_RECURSIVE "R"
|
|
#else
|
|
# define LS_STR_RECURSIVE ""
|
|
#endif
|
|
|
|
#ifdef CONFIG_FEATURE_HUMAN_READABLE
|
|
# define LS_STR_HUMAN_READABLE "h"
|
|
#else
|
|
# define LS_STR_HUMAN_READABLE ""
|
|
#endif
|
|
|
|
#ifdef CONFIG_SELINUX
|
|
# define LS_STR_SELINUX "K"
|
|
#else
|
|
# define LS_STR_SELINUX ""
|
|
#endif
|
|
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
# define LS_STR_AUTOWIDTH "T:w:"
|
|
#else
|
|
# define LS_STR_AUTOWIDTH ""
|
|
#endif
|
|
|
|
static const char ls_options[]="Cadil1gnsxAk" \
|
|
LS_STR_TIMESTAMPS \
|
|
USE_FEATURE_LS_SORTFILES("SXrv") \
|
|
LS_STR_FILETYPES \
|
|
LS_STR_FOLLOW_LINKS \
|
|
LS_STR_RECURSIVE \
|
|
LS_STR_HUMAN_READABLE \
|
|
LS_STR_SELINUX \
|
|
LS_STR_AUTOWIDTH;
|
|
|
|
#define LIST_MASK_TRIGGER 0
|
|
#define STYLE_MASK_TRIGGER STYLE_MASK
|
|
#define SORT_MASK_TRIGGER SORT_MASK
|
|
#define DISP_MASK_TRIGGER DISP_ROWS
|
|
|
|
static const unsigned opt_flags[] = {
|
|
LIST_SHORT | STYLE_COLUMNS, /* C */
|
|
DISP_HIDDEN | DISP_DOT, /* a */
|
|
DISP_NOLIST, /* d */
|
|
LIST_INO, /* i */
|
|
LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
|
|
LIST_SHORT | STYLE_SINGLE, /* 1 */
|
|
0, /* g - ingored */
|
|
LIST_ID_NUMERIC, /* n */
|
|
LIST_BLOCKS, /* s */
|
|
DISP_ROWS, /* x */
|
|
DISP_HIDDEN, /* A */
|
|
#ifdef CONFIG_SELINUX
|
|
LIST_CONTEXT, /* k */
|
|
#else
|
|
0, /* k - ingored */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
TIME_CHANGE | (ENABLE_FEATURE_LS_SORTFILES * SORT_CTIME), /* c */
|
|
LIST_FULLTIME, /* e */
|
|
ENABLE_FEATURE_LS_SORTFILES * SORT_MTIME, /* t */
|
|
TIME_ACCESS | (ENABLE_FEATURE_LS_SORTFILES * SORT_ATIME), /* u */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
SORT_SIZE, /* S */
|
|
SORT_EXT, /* X */
|
|
SORT_ORDER_REVERSE, /* r */
|
|
SORT_VERSION, /* v */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_FILETYPES
|
|
LIST_FILETYPE | LIST_EXEC, /* F */
|
|
LIST_FILETYPE, /* p */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
|
|
FOLLOW_LINKS, /* L */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
DISP_RECURSIVE, /* R */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_HUMAN_READABLE
|
|
LS_DISP_HR, /* h */
|
|
#endif
|
|
#ifdef CONFIG_SELINUX
|
|
LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
0, 0, /* T, w - ignored */
|
|
#endif
|
|
(1U<<31)
|
|
};
|
|
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
|
|
int ls_main(int argc, char **argv)
|
|
{
|
|
struct dnode **dnd;
|
|
struct dnode **dnf;
|
|
struct dnode **dnp;
|
|
struct dnode *dn;
|
|
struct dnode *cur;
|
|
long opt;
|
|
int nfiles = 0;
|
|
int dnfiles;
|
|
int dndirs;
|
|
int oi;
|
|
int ac;
|
|
int i;
|
|
char **av;
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
char *tabstops_str = NULL;
|
|
char *terminal_width_str = NULL;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
char *color_opt;
|
|
#endif
|
|
|
|
all_fmt = LIST_SHORT |
|
|
(ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_ORDER_FORWARD));
|
|
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
/* Obtain the terminal width. */
|
|
get_terminal_width_height(STDOUT_FILENO, &terminal_width, NULL);
|
|
/* Go one less... */
|
|
terminal_width--;
|
|
#endif
|
|
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
bb_applet_long_options = ls_color_opt;
|
|
#endif
|
|
|
|
/* process options */
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
opt = bb_getopt_ulflags(argc, argv, ls_options, &tabstops_str, &terminal_width_str
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
, &color_opt
|
|
#endif
|
|
);
|
|
if (tabstops_str) {
|
|
tabstops = atoi(tabstops_str);
|
|
}
|
|
if (terminal_width_str) {
|
|
terminal_width = atoi(terminal_width_str);
|
|
}
|
|
#else
|
|
opt = bb_getopt_ulflags(argc, argv, ls_options
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
, &color_opt
|
|
#endif
|
|
);
|
|
#endif
|
|
for (i = 0; opt_flags[i] != (1U<<31); i++) {
|
|
if (opt & (1 << i)) {
|
|
unsigned int flags = opt_flags[i];
|
|
|
|
if (flags & LIST_MASK_TRIGGER) {
|
|
all_fmt &= ~LIST_MASK;
|
|
}
|
|
if (flags & STYLE_MASK_TRIGGER) {
|
|
all_fmt &= ~STYLE_MASK;
|
|
}
|
|
if (ENABLE_FEATURE_LS_SORTFILES && (flags & SORT_MASK_TRIGGER)) {
|
|
all_fmt &= ~SORT_MASK;
|
|
}
|
|
if (flags & DISP_MASK_TRIGGER) {
|
|
all_fmt &= ~DISP_MASK;
|
|
}
|
|
if (flags & TIME_MASK) {
|
|
all_fmt &= ~TIME_MASK;
|
|
}
|
|
if (flags & LIST_CONTEXT) {
|
|
all_fmt |= STYLE_SINGLE;
|
|
}
|
|
#ifdef CONFIG_FEATURE_HUMAN_READABLE
|
|
if (opt == 'l') {
|
|
all_fmt &= ~LS_DISP_HR;
|
|
}
|
|
#endif
|
|
all_fmt |= flags;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
{
|
|
/* find color bit value - last position for short getopt */
|
|
|
|
#if CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
|
|
char *p;
|
|
|
|
if ((p = getenv ("LS_COLORS")) != NULL &&
|
|
(*p == '\0' || (strcmp(p, "none") == 0))) {
|
|
;
|
|
} else if (isatty(STDOUT_FILENO)) {
|
|
show_color = 1;
|
|
}
|
|
#endif
|
|
|
|
if((opt & (1 << i))) { /* next flag after short options */
|
|
if (color_opt == NULL || strcmp("always", color_opt) == 0)
|
|
show_color = 1;
|
|
else if (color_opt != NULL && strcmp("never", color_opt) == 0)
|
|
show_color = 0;
|
|
else if (color_opt != NULL && strcmp("auto", color_opt) == 0 && isatty(STDOUT_FILENO))
|
|
show_color = 1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* sort out which command line options take precedence */
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
if (all_fmt & DISP_NOLIST)
|
|
all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
|
|
#endif
|
|
if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
|
|
if (all_fmt & TIME_CHANGE)
|
|
all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
|
|
if (all_fmt & TIME_ACCESS)
|
|
all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
|
|
}
|
|
if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
|
|
all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
|
|
#ifdef CONFIG_FEATURE_LS_USERNAME
|
|
if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
|
|
all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
|
|
#endif
|
|
|
|
/* choose a display format */
|
|
if (!(all_fmt & STYLE_MASK))
|
|
all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNS : STYLE_SINGLE);
|
|
|
|
/*
|
|
* when there are no cmd line args we have to supply a default "." arg.
|
|
* we will create a second argv array, "av" that will hold either
|
|
* our created "." arg, or the real cmd line args. The av array
|
|
* just holds the pointers- we don't move the date the pointers
|
|
* point to.
|
|
*/
|
|
ac = argc - optind; /* how many cmd line args are left */
|
|
if (ac < 1) {
|
|
static const char * const dotdir[] = { "." };
|
|
|
|
av = (char **) dotdir;
|
|
ac = 1;
|
|
} else {
|
|
av = argv + optind;
|
|
}
|
|
|
|
/* now, everything is in the av array */
|
|
if (ac > 1)
|
|
all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
|
|
|
|
/* stuff the command line file names into an dnode array */
|
|
dn = NULL;
|
|
for (oi = 0; oi < ac; oi++) {
|
|
cur = my_stat(av[oi], av[oi]);
|
|
if (!cur)
|
|
continue;
|
|
cur->allocated = 0;
|
|
cur->next = dn;
|
|
dn = cur;
|
|
nfiles++;
|
|
}
|
|
|
|
/* now that we know how many files there are
|
|
** allocate memory for an array to hold dnode pointers
|
|
*/
|
|
dnp = dnalloc(nfiles);
|
|
for (i = 0, cur = dn; i < nfiles; i++) {
|
|
dnp[i] = cur; /* save pointer to node in array */
|
|
cur = cur->next;
|
|
}
|
|
|
|
if (all_fmt & DISP_NOLIST) {
|
|
if (ENABLE_FEATURE_LS_SORTFILES) dnsort(dnp, nfiles);
|
|
if (nfiles > 0)
|
|
showfiles(dnp, nfiles);
|
|
} else {
|
|
dnd = splitdnarray(dnp, nfiles, SPLIT_DIR);
|
|
dnf = splitdnarray(dnp, nfiles, SPLIT_FILE);
|
|
dndirs = countdirs(dnp, nfiles);
|
|
dnfiles = nfiles - dndirs;
|
|
if (dnfiles > 0) {
|
|
if (ENABLE_FEATURE_LS_SORTFILES) dnsort(dnf, dnfiles);
|
|
showfiles(dnf, dnfiles);
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
free(dnf);
|
|
}
|
|
if (dndirs > 0) {
|
|
if (ENABLE_FEATURE_LS_SORTFILES) dnsort(dnd, dndirs);
|
|
showdirs(dnd, dndirs, dnfiles == 0);
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
free(dnd);
|
|
}
|
|
}
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
dfree(dnp, nfiles);
|
|
return (status);
|
|
}
|