busybox/coreutils/ls.c

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/* vi: set sw=4 ts=4: */
1999-10-05 21:54:54 +05:30
/*
* Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
/* [date unknown. Perhaps before year 2000]
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* To achieve a small memory footprint, this version of 'ls' doesn't do any
* file sorting, and only has the most essential command line switches
* (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.
*
* Although I don't really want to add new features to this program to
* keep it small, I *am* interested to receive bug fixes and ways to make
* it more portable.
*
* KNOWN BUGS:
* 1. hidden files can make column width too large
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*
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* NON-OPTIMAL BEHAVIOUR:
* 1. autowidth reads directories twice
* 2. if you do a short directory listing without filetype characters
* appended, there's no need to stat each one
* PORTABILITY:
* 1. requires lstat (BSD) - how do you do it without?
*
* [2009-03]
* ls sorts listing now, and supports almost all options.
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*/
//config:config LS
//config: bool "ls (14 kb)"
//config: default y
//config: help
//config: ls is used to list the contents of directories.
//config:
//config:config FEATURE_LS_FILETYPES
//config: bool "Enable filetyping options (-p and -F)"
//config: default y
//config: depends on LS
//config:
//config:config FEATURE_LS_FOLLOWLINKS
//config: bool "Enable symlinks dereferencing (-L)"
//config: default y
//config: depends on LS
//config:
//config:config FEATURE_LS_RECURSIVE
//config: bool "Enable recursion (-R)"
//config: default y
//config: depends on LS
//config:
//config:config FEATURE_LS_WIDTH
//config: bool "Enable -w WIDTH and window size autodetection"
//config: default y
//config: depends on LS
//config:
//config:config FEATURE_LS_SORTFILES
//config: bool "Sort the file names"
//config: default y
//config: depends on LS
//config: help
//config: Allow ls to sort file names alphabetically.
//config:
//config:config FEATURE_LS_TIMESTAMPS
//config: bool "Show file timestamps"
//config: default y
//config: depends on LS
//config: help
//config: Allow ls to display timestamps for files.
//config:
//config:config FEATURE_LS_USERNAME
//config: bool "Show username/groupnames"
//config: default y
//config: depends on LS
//config: help
//config: Allow ls to display username/groupname for files.
//config:
//config:config FEATURE_LS_COLOR
//config: bool "Allow use of color to identify file types"
//config: default y
//config: depends on LS && LONG_OPTS
//config: help
//config: This enables the --color option to ls.
//config:
//config:config FEATURE_LS_COLOR_IS_DEFAULT
//config: bool "Produce colored ls output by default"
//config: default y
//config: depends on FEATURE_LS_COLOR
//config: help
//config: Saying yes here will turn coloring on by default,
//config: even if no "--color" option is given to the ls command.
//config: This is not recommended, since the colors are not
//config: configurable, and the output may not be legible on
//config: many output screens.
//applet:IF_LS(APPLET_NOEXEC(ls, ls, BB_DIR_BIN, BB_SUID_DROP, ls))
//kbuild:lib-$(CONFIG_LS) += ls.o
//usage:#define ls_trivial_usage
//usage: "[-1AaCxd"
//usage: IF_FEATURE_LS_FOLLOWLINKS("LH")
//usage: IF_FEATURE_LS_RECURSIVE("R")
//usage: IF_FEATURE_LS_FILETYPES("Fp") "lins"
//usage: IF_FEATURE_HUMAN_READABLE("h")
//usage: IF_FEATURE_LS_SORTFILES("rSXv")
//usage: IF_FEATURE_LS_TIMESTAMPS("ctu")
//usage: IF_SELINUX("kZ") "]"
//usage: IF_FEATURE_LS_WIDTH(" [-w WIDTH]") " [FILE]..."
//usage:#define ls_full_usage "\n\n"
//usage: "List directory contents\n"
//usage: "\n -1 One column output"
//usage: "\n -a Include entries which start with ."
//usage: "\n -A Like -a, but exclude . and .."
////usage: "\n -C List by columns" - don't show, this is a default anyway
//usage: "\n -x List by lines"
//usage: "\n -d List directory entries instead of contents"
//usage: IF_FEATURE_LS_FOLLOWLINKS(
//usage: "\n -L Follow symlinks"
//usage: "\n -H Follow symlinks on command line"
//usage: )
//usage: IF_FEATURE_LS_RECURSIVE(
//usage: "\n -R Recurse"
//usage: )
//usage: IF_FEATURE_LS_FILETYPES(
//usage: "\n -p Append / to dir entries"
//usage: "\n -F Append indicator (one of */=@|) to entries"
//usage: )
//usage: "\n -l Long listing format"
//usage: "\n -i List inode numbers"
//usage: "\n -n List numeric UIDs and GIDs instead of names"
//usage: "\n -s List allocated blocks"
//usage: IF_FEATURE_LS_TIMESTAMPS(
//usage: "\n -lc List ctime"
//usage: "\n -lu List atime"
//usage: )
//usage: IF_FEATURE_LS_TIMESTAMPS(IF_LONG_OPTS(
//usage: "\n --full-time List full date and time"
//usage: ))
//usage: IF_FEATURE_HUMAN_READABLE(
//usage: "\n -h Human readable sizes (1K 243M 2G)"
//usage: )
//usage: IF_FEATURE_LS_SORTFILES(
//usage: IF_LONG_OPTS(
//usage: "\n --group-directories-first"
//usage: )
//usage: "\n -S Sort by size"
//usage: "\n -X Sort by extension"
//usage: "\n -v Sort by version"
//usage: )
//usage: IF_FEATURE_LS_TIMESTAMPS(
//usage: "\n -t Sort by mtime"
//usage: "\n -tc Sort by ctime"
//usage: "\n -tu Sort by atime"
//usage: )
//usage: "\n -r Reverse sort order"
//usage: IF_SELINUX(
//usage: "\n -Z List security context and permission"
//usage: )
//usage: IF_FEATURE_LS_WIDTH(
//usage: "\n -w N Format N columns wide"
//usage: )
//usage: IF_FEATURE_LS_COLOR(
//usage: "\n --color[={always,never,auto}] Control coloring"
//usage: )
#include "libbb.h"
#include "common_bufsiz.h"
#include "unicode.h"
/* This is a NOEXEC applet. Be very careful! */
#if ENABLE_FTPD
/* ftpd uses ls, and without timestamps Mozilla won't understand
* ftpd's LIST output.
*/
# undef CONFIG_FEATURE_LS_TIMESTAMPS
# undef ENABLE_FEATURE_LS_TIMESTAMPS
# undef IF_FEATURE_LS_TIMESTAMPS
# undef IF_NOT_FEATURE_LS_TIMESTAMPS
# define CONFIG_FEATURE_LS_TIMESTAMPS 1
# define ENABLE_FEATURE_LS_TIMESTAMPS 1
# define IF_FEATURE_LS_TIMESTAMPS(...) __VA_ARGS__
# define IF_NOT_FEATURE_LS_TIMESTAMPS(...)
#endif
enum {
TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
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SPLIT_FILE = 0,
SPLIT_DIR = 1,
SPLIT_SUBDIR = 2,
};
/* -Cadi1l Std options, busybox always supports */
/* -gnsxA Std options, busybox always supports */
/* -Q GNU option, busybox always supports */
/* -k Std option, busybox always supports (by ignoring) */
/* It means "for -s, show sizes in kbytes" */
/* Seems to only affect "POSIXLY_CORRECT=1 ls -sk" */
/* since otherwise -s shows kbytes anyway */
/* -LHRctur Std options, busybox optionally supports */
/* -Fp Std options, busybox optionally supports */
/* -SXvhTw GNU options, busybox optionally supports */
/* -T WIDTH Ignored (we don't use tabs on output) */
/* -Z SELinux mandated option, busybox optionally supports */
getopt32: remove opt_complementary function old new delta vgetopt32 1318 1392 +74 runsvdir_main 703 713 +10 bb_make_directory 423 425 +2 collect_cpu 546 545 -1 opt_chars 3 - -3 opt_complementary 4 - -4 tftpd_main 567 562 -5 ntp_init 476 471 -5 zcip_main 1266 1256 -10 xxd_main 428 418 -10 whois_main 140 130 -10 who_main 463 453 -10 which_main 212 202 -10 wget_main 2535 2525 -10 watchdog_main 291 281 -10 watch_main 222 212 -10 vlock_main 399 389 -10 uuencode_main 332 322 -10 uudecode_main 316 306 -10 unlink_main 45 35 -10 udhcpd_main 1482 1472 -10 udhcpc_main 2762 2752 -10 tune2fs_main 290 280 -10 tunctl_main 366 356 -10 truncate_main 218 208 -10 tr_main 518 508 -10 time_main 1134 1124 -10 tftp_main 286 276 -10 telnetd_main 1873 1863 -10 tcpudpsvd_main 1785 1775 -10 taskset_main 521 511 -10 tar_main 1009 999 -10 tail_main 1644 1634 -10 syslogd_main 1967 1957 -10 switch_root_main 368 358 -10 svlogd_main 1454 1444 -10 sv 1296 1286 -10 stat_main 104 94 -10 start_stop_daemon_main 1028 1018 -10 split_main 542 532 -10 sort_main 796 786 -10 slattach_main 624 614 -10 shuf_main 504 494 -10 setsid_main 96 86 -10 setserial_main 1132 1122 -10 setfont_main 388 378 -10 setconsole_main 78 68 -10 sendmail_main 1209 1199 -10 sed_main 677 667 -10 script_main 1077 1067 -10 run_parts_main 325 315 -10 rtcwake_main 454 444 -10 rm_main 175 165 -10 reformime_main 119 109 -10 readlink_main 123 113 -10 rdate_main 246 236 -10 pwdx_main 189 179 -10 pstree_main 317 307 -10 pscan_main 663 653 -10 popmaildir_main 818 808 -10 pmap_main 80 70 -10 nc_main 1042 1032 -10 mv_main 558 548 -10 mountpoint_main 477 467 -10 mount_main 1264 1254 -10 modprobe_main 768 758 -10 modinfo_main 333 323 -10 mktemp_main 200 190 -10 mkswap_main 324 314 -10 mkfs_vfat_main 1489 1479 -10 microcom_main 715 705 -10 md5_sha1_sum_main 521 511 -10 man_main 867 857 -10 makedevs_main 1052 1042 -10 ls_main 563 553 -10 losetup_main 432 422 -10 loadfont_main 89 79 -10 ln_main 524 514 -10 link_main 75 65 -10 ipcalc_main 544 534 -10 iostat_main 2397 2387 -10 install_main 768 758 -10 id_main 480 470 -10 i2cset_main 1239 1229 -10 i2cget_main 380 370 -10 i2cdump_main 1482 1472 -10 i2cdetect_main 682 672 -10 hwclock_main 406 396 -10 httpd_main 741 731 -10 grep_main 837 827 -10 getty_main 1559 1549 -10 fuser_main 297 287 -10 ftpgetput_main 345 335 -10 ftpd_main 2232 2222 -10 fstrim_main 251 241 -10 fsfreeze_main 77 67 -10 fsck_minix_main 2921 2911 -10 flock_main 314 304 -10 flashcp_main 740 730 -10 flash_eraseall_main 833 823 -10 fdformat_main 532 522 -10 expand_main 680 670 -10 eject_main 335 325 -10 dumpleases_main 630 620 -10 du_main 314 304 -10 dos2unix_main 441 431 -10 diff_main 1350 1340 -10 df_main 1064 1054 -10 date_main 1095 1085 -10 cut_main 961 951 -10 cryptpw_main 228 218 -10 crontab_main 575 565 -10 crond_main 1149 1139 -10 cp_main 370 360 -10 common_traceroute_main 3834 3824 -10 common_ping_main 1767 1757 -10 comm_main 239 229 -10 cmp_main 655 645 -10 chrt_main 379 369 -10 chpst_main 704 694 -10 chpasswd_main 308 298 -10 chown_main 171 161 -10 chmod_main 158 148 -10 cat_main 428 418 -10 bzip2_main 120 110 -10 blkdiscard_main 264 254 -10 base64_main 221 211 -10 arping_main 1665 1655 -10 ar_main 556 546 -10 adjtimex_main 406 396 -10 adduser_main 882 872 -10 addgroup_main 411 401 -10 acpid_main 1198 1188 -10 optstring 11 - -11 opt_string 18 - -18 OPT_STR 25 - -25 ubi_tools_main 1288 1258 -30 ls_options 31 - -31 ------------------------------------------------------------------------------ (add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383) Total: -1297 bytes text data bss dec hex filename 915428 485 6876 922789 e14a5 busybox_old 914629 485 6872 921986 e1182 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-09 01:25:02 +05:30
#define ls_options \
"Cadi1lgnsxAk" /* 12 opts, total 12 */ \
IF_FEATURE_LS_FILETYPES("Fp") /* 2, 14 */ \
IF_FEATURE_LS_RECURSIVE("R") /* 1, 15 */ \
IF_SELINUX("Z") /* 1, 16 */ \
"Q" /* 1, 17 */ \
IF_FEATURE_LS_TIMESTAMPS("ctu") /* 3, 20 */ \
IF_FEATURE_LS_SORTFILES("SXrv") /* 4, 24 */ \
IF_FEATURE_LS_FOLLOWLINKS("LH") /* 2, 26 */ \
IF_FEATURE_HUMAN_READABLE("h") /* 1, 27 */ \
IF_FEATURE_LS_WIDTH("T:w:") /* 2, 29 */
getopt32: remove opt_complementary function old new delta vgetopt32 1318 1392 +74 runsvdir_main 703 713 +10 bb_make_directory 423 425 +2 collect_cpu 546 545 -1 opt_chars 3 - -3 opt_complementary 4 - -4 tftpd_main 567 562 -5 ntp_init 476 471 -5 zcip_main 1266 1256 -10 xxd_main 428 418 -10 whois_main 140 130 -10 who_main 463 453 -10 which_main 212 202 -10 wget_main 2535 2525 -10 watchdog_main 291 281 -10 watch_main 222 212 -10 vlock_main 399 389 -10 uuencode_main 332 322 -10 uudecode_main 316 306 -10 unlink_main 45 35 -10 udhcpd_main 1482 1472 -10 udhcpc_main 2762 2752 -10 tune2fs_main 290 280 -10 tunctl_main 366 356 -10 truncate_main 218 208 -10 tr_main 518 508 -10 time_main 1134 1124 -10 tftp_main 286 276 -10 telnetd_main 1873 1863 -10 tcpudpsvd_main 1785 1775 -10 taskset_main 521 511 -10 tar_main 1009 999 -10 tail_main 1644 1634 -10 syslogd_main 1967 1957 -10 switch_root_main 368 358 -10 svlogd_main 1454 1444 -10 sv 1296 1286 -10 stat_main 104 94 -10 start_stop_daemon_main 1028 1018 -10 split_main 542 532 -10 sort_main 796 786 -10 slattach_main 624 614 -10 shuf_main 504 494 -10 setsid_main 96 86 -10 setserial_main 1132 1122 -10 setfont_main 388 378 -10 setconsole_main 78 68 -10 sendmail_main 1209 1199 -10 sed_main 677 667 -10 script_main 1077 1067 -10 run_parts_main 325 315 -10 rtcwake_main 454 444 -10 rm_main 175 165 -10 reformime_main 119 109 -10 readlink_main 123 113 -10 rdate_main 246 236 -10 pwdx_main 189 179 -10 pstree_main 317 307 -10 pscan_main 663 653 -10 popmaildir_main 818 808 -10 pmap_main 80 70 -10 nc_main 1042 1032 -10 mv_main 558 548 -10 mountpoint_main 477 467 -10 mount_main 1264 1254 -10 modprobe_main 768 758 -10 modinfo_main 333 323 -10 mktemp_main 200 190 -10 mkswap_main 324 314 -10 mkfs_vfat_main 1489 1479 -10 microcom_main 715 705 -10 md5_sha1_sum_main 521 511 -10 man_main 867 857 -10 makedevs_main 1052 1042 -10 ls_main 563 553 -10 losetup_main 432 422 -10 loadfont_main 89 79 -10 ln_main 524 514 -10 link_main 75 65 -10 ipcalc_main 544 534 -10 iostat_main 2397 2387 -10 install_main 768 758 -10 id_main 480 470 -10 i2cset_main 1239 1229 -10 i2cget_main 380 370 -10 i2cdump_main 1482 1472 -10 i2cdetect_main 682 672 -10 hwclock_main 406 396 -10 httpd_main 741 731 -10 grep_main 837 827 -10 getty_main 1559 1549 -10 fuser_main 297 287 -10 ftpgetput_main 345 335 -10 ftpd_main 2232 2222 -10 fstrim_main 251 241 -10 fsfreeze_main 77 67 -10 fsck_minix_main 2921 2911 -10 flock_main 314 304 -10 flashcp_main 740 730 -10 flash_eraseall_main 833 823 -10 fdformat_main 532 522 -10 expand_main 680 670 -10 eject_main 335 325 -10 dumpleases_main 630 620 -10 du_main 314 304 -10 dos2unix_main 441 431 -10 diff_main 1350 1340 -10 df_main 1064 1054 -10 date_main 1095 1085 -10 cut_main 961 951 -10 cryptpw_main 228 218 -10 crontab_main 575 565 -10 crond_main 1149 1139 -10 cp_main 370 360 -10 common_traceroute_main 3834 3824 -10 common_ping_main 1767 1757 -10 comm_main 239 229 -10 cmp_main 655 645 -10 chrt_main 379 369 -10 chpst_main 704 694 -10 chpasswd_main 308 298 -10 chown_main 171 161 -10 chmod_main 158 148 -10 cat_main 428 418 -10 bzip2_main 120 110 -10 blkdiscard_main 264 254 -10 base64_main 221 211 -10 arping_main 1665 1655 -10 ar_main 556 546 -10 adjtimex_main 406 396 -10 adduser_main 882 872 -10 addgroup_main 411 401 -10 acpid_main 1198 1188 -10 optstring 11 - -11 opt_string 18 - -18 OPT_STR 25 - -25 ubi_tools_main 1288 1258 -30 ls_options 31 - -31 ------------------------------------------------------------------------------ (add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383) Total: -1297 bytes text data bss dec hex filename 915428 485 6876 922789 e14a5 busybox_old 914629 485 6872 921986 e1182 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-09 01:25:02 +05:30
enum {
OPT_C = (1 << 0),
OPT_a = (1 << 1),
OPT_d = (1 << 2),
OPT_i = (1 << 3),
OPT_1 = (1 << 4),
OPT_l = (1 << 5),
OPT_g = (1 << 6),
OPT_n = (1 << 7),
OPT_s = (1 << 8),
OPT_x = (1 << 9),
OPT_A = (1 << 10),
//OPT_k = (1 << 11),
OPTBIT_F = 12,
OPTBIT_p, /* 13 */
OPTBIT_R = OPTBIT_F + 2 * ENABLE_FEATURE_LS_FILETYPES,
OPTBIT_Z = OPTBIT_R + 1 * ENABLE_FEATURE_LS_RECURSIVE,
OPTBIT_Q = OPTBIT_Z + 1 * ENABLE_SELINUX,
OPTBIT_c, /* 17 */
OPTBIT_t, /* 18 */
OPTBIT_u, /* 19 */
OPTBIT_S = OPTBIT_c + 3 * ENABLE_FEATURE_LS_TIMESTAMPS,
OPTBIT_X, /* 21 */
OPTBIT_r, /* 22 */
OPTBIT_v, /* 23 */
OPTBIT_L = OPTBIT_S + 4 * ENABLE_FEATURE_LS_SORTFILES,
OPTBIT_H, /* 25 */
OPTBIT_h = OPTBIT_L + 2 * ENABLE_FEATURE_LS_FOLLOWLINKS,
OPTBIT_T = OPTBIT_h + 1 * ENABLE_FEATURE_HUMAN_READABLE,
OPTBIT_w, /* 28 */
OPTBIT_full_time = OPTBIT_T + 2 * ENABLE_FEATURE_LS_WIDTH,
OPTBIT_dirs_first,
OPTBIT_color, /* 31 */
/* with long opts, we use all 32 bits */
OPT_F = (1 << OPTBIT_F) * ENABLE_FEATURE_LS_FILETYPES,
OPT_p = (1 << OPTBIT_p) * ENABLE_FEATURE_LS_FILETYPES,
OPT_R = (1 << OPTBIT_R) * ENABLE_FEATURE_LS_RECURSIVE,
OPT_Z = (1 << OPTBIT_Z) * ENABLE_SELINUX,
OPT_Q = (1 << OPTBIT_Q),
OPT_c = (1 << OPTBIT_c) * ENABLE_FEATURE_LS_TIMESTAMPS,
OPT_t = (1 << OPTBIT_t) * ENABLE_FEATURE_LS_TIMESTAMPS,
OPT_u = (1 << OPTBIT_u) * ENABLE_FEATURE_LS_TIMESTAMPS,
OPT_S = (1 << OPTBIT_S) * ENABLE_FEATURE_LS_SORTFILES,
OPT_X = (1 << OPTBIT_X) * ENABLE_FEATURE_LS_SORTFILES,
OPT_r = (1 << OPTBIT_r) * ENABLE_FEATURE_LS_SORTFILES,
OPT_v = (1 << OPTBIT_v) * ENABLE_FEATURE_LS_SORTFILES,
OPT_L = (1 << OPTBIT_L) * ENABLE_FEATURE_LS_FOLLOWLINKS,
OPT_H = (1 << OPTBIT_H) * ENABLE_FEATURE_LS_FOLLOWLINKS,
OPT_h = (1 << OPTBIT_h) * ENABLE_FEATURE_HUMAN_READABLE,
OPT_T = (1 << OPTBIT_T) * ENABLE_FEATURE_LS_WIDTH,
OPT_w = (1 << OPTBIT_w) * ENABLE_FEATURE_LS_WIDTH,
OPT_full_time = (1 << OPTBIT_full_time ) * ENABLE_LONG_OPTS,
OPT_dirs_first = (1 << OPTBIT_dirs_first) * ENABLE_LONG_OPTS,
OPT_color = (1 << OPTBIT_color ) * ENABLE_FEATURE_LS_COLOR,
};
/*
* a directory entry and its stat info
*/
struct dnode {
const char *name; /* usually basename, but think "ls -l dir/file" */
const char *fullname; /* full name (usable for stat etc) */
struct dnode *dn_next; /* for linked list */
IF_SELINUX(security_context_t sid;)
smallint fname_allocated;
/* Used to avoid re-doing [l]stat at printout stage
* if we already collected needed data in scan stage:
*/
mode_t dn_mode_lstat; /* obtained with lstat, or 0 */
mode_t dn_mode_stat; /* obtained with stat, or 0 */
// struct stat dstat;
// struct stat is huge. We don't need it in full.
// At least we don't need st_dev and st_blksize,
// but there are invisible fields as well
// (such as nanosecond-resolution timespamps)
// and padding, which we also don't want to store.
// We also can pre-parse dev_t dn_rdev (in glibc, it's huge).
// On 32-bit uclibc: dnode size went from 112 to 84 bytes.
//
/* Same names as in struct stat, but with dn_ instead of st_ pfx: */
mode_t dn_mode; /* obtained with lstat OR stat, depending on -L etc */
off_t dn_size;
#if ENABLE_FEATURE_LS_TIMESTAMPS || ENABLE_FEATURE_LS_SORTFILES
time_t dn_time;
#endif
ino_t dn_ino;
blkcnt_t dn_blocks;
nlink_t dn_nlink;
uid_t dn_uid;
gid_t dn_gid;
int dn_rdev_maj;
int dn_rdev_min;
// dev_t dn_dev;
// blksize_t dn_blksize;
};
1999-10-05 21:54:54 +05:30
struct globals {
#if ENABLE_FEATURE_LS_COLOR
smallint show_color;
# define G_show_color (G.show_color)
#else
# define G_show_color 0
#endif
smallint exit_code;
smallint show_dirname;
#if ENABLE_FEATURE_LS_WIDTH
unsigned terminal_width;
# define G_terminal_width (G.terminal_width)
#else
# define G_terminal_width TERMINAL_WIDTH
#endif
#if ENABLE_FEATURE_LS_TIMESTAMPS
/* Do time() just once. Saves one syscall per file for "ls -l" */
time_t current_time_t;
#endif
} FIX_ALIASING;
#define G (*(struct globals*)bb_common_bufsiz1)
2008-06-25 15:23:17 +05:30
#define INIT_G() do { \
setup_common_bufsiz(); \
/* we have to zero it out because of NOEXEC */ \
memset(&G, 0, sizeof(G)); \
IF_FEATURE_LS_WIDTH(G_terminal_width = TERMINAL_WIDTH;) \
IF_FEATURE_LS_TIMESTAMPS(time(&G.current_time_t);) \
2008-06-25 15:23:17 +05:30
} while (0)
/*** Output code ***/
1999-10-05 21:54:54 +05:30
/* FYI type values: 1:fifo 2:char 4:dir 6:blk 8:file 10:link 12:socket
* (various wacky OSes: 13:Sun door 14:BSD whiteout 5:XENIX named file
* 3/7:multiplexed char/block device)
* and we use 0 for unknown and 15 for executables (see below) */
#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
/* un fi chr - dir - blk - file - link - sock - - exe */
#define APPCHAR(mode) ("\0""|""\0""\0""/""\0""\0""\0""\0""\0""@""\0""=""\0""\0""\0" [TYPEINDEX(mode)])
/* 036 black foreground 050 black background
037 red foreground 051 red background
040 green foreground 052 green background
041 brown foreground 053 brown background
042 blue foreground 054 blue background
043 magenta (purple) foreground 055 magenta background
044 cyan (light blue) foreground 056 cyan background
045 gray foreground 057 white background
*/
#define COLOR(mode) ( \
/*un fi chr - dir - blk - file - link - sock - - exe */ \
"\037\043\043\045\042\045\043\043\000\045\044\045\043\045\045\040" \
[TYPEINDEX(mode)])
/* Select normal (0) [actually "reset all"] or bold (1)
* (other attributes are 2:dim 4:underline 5:blink 7:reverse,
* let's use 7 for "impossible" types, just for fun)
* Note: coreutils 6.9 uses inverted red for setuid binaries.
*/
#define ATTR(mode) ( \
/*un fi chr - dir - blk - file- link- sock- - exe */ \
"\01\00\01\07\01\07\01\07\00\07\01\07\01\07\07\01" \
[TYPEINDEX(mode)])
2006-10-28 18:07:16 +05:30
#if ENABLE_FEATURE_LS_COLOR
/* mode of zero is interpreted as "unknown" (stat failed) */
static char fgcolor(mode_t mode)
{
if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
return COLOR(0xF000); /* File is executable ... */
return COLOR(mode);
}
static char bold(mode_t mode)
{
if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
return ATTR(0xF000); /* File is executable ... */
return ATTR(mode);
}
#endif
#if ENABLE_FEATURE_LS_FILETYPES
static char append_char(mode_t mode)
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{
if (!(option_mask32 & (OPT_F|OPT_p)))
return '\0';
if (S_ISDIR(mode))
return '/';
if (!(option_mask32 & OPT_F))
return '\0';
if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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return '*';
return APPCHAR(mode);
1999-10-05 21:54:54 +05:30
}
#endif
1999-10-05 21:54:54 +05:30
static unsigned calc_name_len(const char *name)
{
unsigned len;
uni_stat_t uni_stat;
// TODO: quote tab as \t, etc, if -Q
name = printable_string(&uni_stat, name);
if (!(option_mask32 & OPT_Q)) {
return uni_stat.unicode_width;
}
len = 2 + uni_stat.unicode_width;
while (*name) {
if (*name == '"' || *name == '\\') {
len++;
}
name++;
}
return len;
}
/* Return the number of used columns.
* Note that only columnar output uses return value.
* -l and -1 modes don't care.
* coreutils 7.2 also supports:
* ls -b (--escape) = octal escapes (although it doesn't look like working)
* ls -N (--literal) = not escape at all
*/
static unsigned print_name(const char *name)
{
unsigned len;
uni_stat_t uni_stat;
// TODO: quote tab as \t, etc, if -Q
name = printable_string(&uni_stat, name);
if (!(option_mask32 & OPT_Q)) {
fputs(name, stdout);
return uni_stat.unicode_width;
}
len = 2 + uni_stat.unicode_width;
putchar('"');
while (*name) {
if (*name == '"' || *name == '\\') {
putchar('\\');
len++;
}
putchar(*name);
name++;
}
putchar('"');
return len;
}
/* Return the number of used columns.
* Note that only columnar output uses return value,
* -l and -1 modes don't care.
*/
static NOINLINE unsigned display_single(const struct dnode *dn)
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{
unsigned column = 0;
char *lpath;
int opt;
#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
struct stat statbuf;
char append;
#endif
#if ENABLE_FEATURE_LS_FILETYPES
append = append_char(dn->dn_mode);
#endif
opt = option_mask32;
/* Do readlink early, so that if it fails, error message
* does not appear *inside* the "ls -l" line */
lpath = NULL;
if (opt & OPT_l)
if (S_ISLNK(dn->dn_mode))
lpath = xmalloc_readlink_or_warn(dn->fullname);
if (opt & OPT_i) /* show inode# */
column += printf("%7llu ", (long long) dn->dn_ino);
//TODO: -h should affect -s too:
if (opt & OPT_s) /* show allocated blocks */
column += printf("%6"OFF_FMT"u ", (off_t) (dn->dn_blocks >> 1));
if (opt & OPT_l) {
/* long listing: show mode */
column += printf("%-10s ", (char *) bb_mode_string(dn->dn_mode));
/* long listing: show number of links */
column += printf("%4lu ", (long) dn->dn_nlink);
/* long listing: show user/group */
if (opt & OPT_n) {
if (opt & OPT_g)
column += printf("%-8u ", (int) dn->dn_gid);
else
column += printf("%-8u %-8u ",
(int) dn->dn_uid,
(int) dn->dn_gid);
}
#if ENABLE_FEATURE_LS_USERNAME
else {
if (opt & OPT_g) {
column += printf("%-8.8s ",
get_cached_groupname(dn->dn_gid));
} else {
column += printf("%-8.8s %-8.8s ",
get_cached_username(dn->dn_uid),
get_cached_groupname(dn->dn_gid));
}
}
#endif
#if ENABLE_SELINUX
}
if (opt & OPT_Z) {
column += printf("%-32s ", dn->sid ? dn->sid : "?");
freecon(dn->sid);
}
if (opt & OPT_l) {
#endif
/* long listing: show size */
if (S_ISBLK(dn->dn_mode) || S_ISCHR(dn->dn_mode)) {
column += printf("%4u, %3u ",
dn->dn_rdev_maj,
dn->dn_rdev_min);
} else {
if (opt & OPT_h) {
column += printf("%"HUMAN_READABLE_MAX_WIDTH_STR"s ",
/* print size, show one fractional, use suffixes */
make_human_readable_str(dn->dn_size, 1, 0)
);
} else {
column += printf("%9"OFF_FMT"u ", dn->dn_size);
}
}
#if ENABLE_FEATURE_LS_TIMESTAMPS
/* long listing: show {m,c,a}time */
if (opt & OPT_full_time) { /* --full-time */
/* coreutils 8.4 ls --full-time prints:
* 2009-07-13 17:49:27.000000000 +0200
* we don't show fractional seconds.
*/
char buf[sizeof("YYYY-mm-dd HH:MM:SS TIMEZONE")];
strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S %z",
localtime(&dn->dn_time));
column += printf("%s ", buf);
} else { /* ordinary time format */
/* G.current_time_t is ~== time(NULL) */
char *filetime = ctime(&dn->dn_time);
/* filetime's format: "Wed Jun 30 21:49:08 1993\n" */
time_t age = G.current_time_t - dn->dn_time;
if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
/* less than 6 months old */
/* "mmm dd hh:mm " */
printf("%.12s ", filetime + 4);
} else {
/* "mmm dd yyyy " */
/* "mmm dd yyyyy " after year 9999 :) */
strchr(filetime + 20, '\n')[0] = ' ';
printf("%.7s%6s", filetime + 4, filetime + 20);
}
column += 13;
}
#endif
}
#if ENABLE_FEATURE_LS_COLOR
if (G_show_color) {
mode_t mode = dn->dn_mode_lstat;
if (!mode)
if (lstat(dn->fullname, &statbuf) == 0)
mode = statbuf.st_mode;
printf("\033[%u;%um", bold(mode), fgcolor(mode));
}
#endif
column += print_name(dn->name);
if (G_show_color) {
printf("\033[0m");
}
if (lpath) {
printf(" -> ");
#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
if ((opt & (OPT_F|OPT_p))
|| G_show_color
) {
mode_t mode = dn->dn_mode_stat;
if (!mode)
if (stat(dn->fullname, &statbuf) == 0)
mode = statbuf.st_mode;
# if ENABLE_FEATURE_LS_FILETYPES
append = append_char(mode);
# endif
# if ENABLE_FEATURE_LS_COLOR
if (G_show_color) {
printf("\033[%u;%um", bold(mode), fgcolor(mode));
}
# endif
}
#endif
column += print_name(lpath) + 4;
free(lpath);
if (G_show_color) {
printf("\033[0m");
}
}
#if ENABLE_FEATURE_LS_FILETYPES
if (opt & (OPT_F|OPT_p)) {
if (append) {
putchar(append);
column++;
}
}
#endif
return column;
}
static void display_files(struct dnode **dn, unsigned nfiles)
{
unsigned i, ncols, nrows, row, nc;
unsigned column;
unsigned nexttab;
unsigned column_width = 0; /* used only by coulmnal output */
if (option_mask32 & (OPT_l|OPT_1)) {
ncols = 1;
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} else {
/* find the longest file name, use that as the column width */
for (i = 0; dn[i]; i++) {
int len = calc_name_len(dn[i]->name);
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if (column_width < len)
column_width = len;
}
column_width += 2
+ ((option_mask32 & OPT_Z) ? 33 : 0) /* context width */
+ ((option_mask32 & OPT_i) ? 8 : 0) /* inode# width */
+ ((option_mask32 & OPT_s) ? 5 : 0) /* "alloc block" width */
;
ncols = (unsigned)G_terminal_width / column_width;
1999-10-05 21:54:54 +05:30
}
if (ncols > 1) {
nrows = nfiles / ncols;
if (nrows * ncols < nfiles)
nrows++; /* round up fractionals */
} else {
nrows = nfiles;
ncols = 1;
}
1999-10-05 21:54:54 +05:30
column = 0;
nexttab = 0;
2002-08-22 23:43:54 +05:30
for (row = 0; row < nrows; row++) {
for (nc = 0; nc < ncols; nc++) {
/* reach into the array based on the column and row */
if (option_mask32 & OPT_x)
2002-08-22 23:43:54 +05:30
i = (row * ncols) + nc; /* display across row */
else
i = (nc * nrows) + row; /* display by column */
if (i < nfiles) {
if (column > 0) {
nexttab -= column;
printf("%*s", nexttab, "");
column += nexttab;
2006-10-28 18:07:16 +05:30
}
nexttab = column + column_width;
column += display_single(dn[i]);
2006-10-28 18:07:16 +05:30
}
}
putchar('\n');
column = 0;
1999-10-05 21:54:54 +05:30
}
}
/*** Dir scanning code ***/
static struct dnode *my_stat(const char *fullname, const char *name, int force_follow)
{
struct stat statbuf;
struct dnode *cur;
cur = xzalloc(sizeof(*cur));
cur->fullname = fullname;
cur->name = name;
if ((option_mask32 & OPT_L) || force_follow) {
#if ENABLE_SELINUX
if (option_mask32 & OPT_Z) {
getfilecon(fullname, &cur->sid);
}
#endif
if (stat(fullname, &statbuf)) {
bb_simple_perror_msg(fullname);
G.exit_code = EXIT_FAILURE;
free(cur);
return NULL;
}
cur->dn_mode_stat = statbuf.st_mode;
} else {
#if ENABLE_SELINUX
if (option_mask32 & OPT_Z) {
lgetfilecon(fullname, &cur->sid);
}
#endif
if (lstat(fullname, &statbuf)) {
bb_simple_perror_msg(fullname);
G.exit_code = EXIT_FAILURE;
free(cur);
return NULL;
}
cur->dn_mode_lstat = statbuf.st_mode;
}
/* cur->dstat = statbuf: */
cur->dn_mode = statbuf.st_mode ;
cur->dn_size = statbuf.st_size ;
#if ENABLE_FEATURE_LS_TIMESTAMPS || ENABLE_FEATURE_LS_SORTFILES
cur->dn_time = statbuf.st_mtime ;
if (option_mask32 & OPT_u)
cur->dn_time = statbuf.st_atime;
if (option_mask32 & OPT_c)
cur->dn_time = statbuf.st_ctime;
#endif
cur->dn_ino = statbuf.st_ino ;
cur->dn_blocks = statbuf.st_blocks;
cur->dn_nlink = statbuf.st_nlink ;
cur->dn_uid = statbuf.st_uid ;
cur->dn_gid = statbuf.st_gid ;
cur->dn_rdev_maj = major(statbuf.st_rdev);
cur->dn_rdev_min = minor(statbuf.st_rdev);
return cur;
}
static unsigned count_dirs(struct dnode **dn, int which)
{
unsigned dirs, all;
if (!dn)
return 0;
dirs = all = 0;
for (; *dn; dn++) {
const char *name;
all++;
if (!S_ISDIR((*dn)->dn_mode))
continue;
name = (*dn)->name;
if (which != SPLIT_SUBDIR /* if not requested to skip . / .. */
/* or if it's not . or .. */
|| name[0] != '.'
|| (name[1] && (name[1] != '.' || name[2]))
) {
dirs++;
}
}
return which != SPLIT_FILE ? dirs : all - dirs;
}
/* get memory to hold an array of pointers */
static struct dnode **dnalloc(unsigned num)
{
if (num < 1)
return NULL;
num++; /* so that we have terminating NULL */
return xzalloc(num * sizeof(struct dnode *));
}
#if ENABLE_FEATURE_LS_RECURSIVE
static void dfree(struct dnode **dnp)
{
unsigned i;
if (dnp == NULL)
return;
for (i = 0; dnp[i]; i++) {
struct dnode *cur = dnp[i];
if (cur->fname_allocated)
free((char*)cur->fullname);
free(cur);
}
free(dnp);
}
#else
#define dfree(...) ((void)0)
#endif
/* Returns NULL-terminated malloced vector of pointers (or NULL) */
static struct dnode **splitdnarray(struct dnode **dn, int which)
{
unsigned dncnt, d;
struct dnode **dnp;
if (dn == NULL)
return NULL;
/* count how many dirs or files there are */
dncnt = count_dirs(dn, which);
/* allocate a file array and a dir array */
dnp = dnalloc(dncnt);
/* copy the entrys into the file or dir array */
for (d = 0; *dn; dn++) {
if (S_ISDIR((*dn)->dn_mode)) {
const char *name;
if (which == SPLIT_FILE)
continue;
name = (*dn)->name;
if ((which & SPLIT_DIR) /* any dir... */
/* ... or not . or .. */
|| name[0] != '.'
|| (name[1] && (name[1] != '.' || name[2]))
) {
dnp[d++] = *dn;
}
} else
if (which == SPLIT_FILE) {
dnp[d++] = *dn;
}
}
return dnp;
}
#if ENABLE_FEATURE_LS_SORTFILES
static int sortcmp(const void *a, const void *b)
{
struct dnode *d1 = *(struct dnode **)a;
struct dnode *d2 = *(struct dnode **)b;
unsigned opt = option_mask32;
off_t dif;
dif = 0; /* assume sort by name */
// TODO: use pre-initialized function pointer
// instead of branch forest
if (opt & OPT_dirs_first) {
dif = S_ISDIR(d2->dn_mode) - S_ISDIR(d1->dn_mode);
if (dif != 0)
goto maybe_invert_and_ret;
}
if (opt & OPT_S) { /* sort by size */
dif = (d2->dn_size - d1->dn_size);
} else
if (opt & OPT_t) { /* sort by time */
dif = (d2->dn_time - d1->dn_time);
} else
#if defined(HAVE_STRVERSCMP) && HAVE_STRVERSCMP == 1
if (opt & OPT_v) { /* sort by version */
dif = strverscmp(d1->name, d2->name);
} else
#endif
if (opt & OPT_X) { /* sort by extension */
dif = strcmp(strchrnul(d1->name, '.'), strchrnul(d2->name, '.'));
}
if (dif == 0) {
/* sort by name, use as tie breaker for other sorts */
if (ENABLE_LOCALE_SUPPORT)
dif = strcoll(d1->name, d2->name);
else
dif = strcmp(d1->name, d2->name);
} else {
/* Make dif fit into an int */
if (sizeof(dif) > sizeof(int)) {
enum { BITS_TO_SHIFT = 8 * (sizeof(dif) - sizeof(int)) };
/* shift leaving only "int" worth of bits */
/* (this requires dif != 0, and here it is nonzero) */
dif = 1 | (int)((uoff_t)dif >> BITS_TO_SHIFT);
}
}
maybe_invert_and_ret:
return (opt & OPT_r) ? -(int)dif : (int)dif;
}
static void dnsort(struct dnode **dn, int size)
{
qsort(dn, size, sizeof(*dn), sortcmp);
}
static void sort_and_display_files(struct dnode **dn, unsigned nfiles)
{
dnsort(dn, nfiles);
display_files(dn, nfiles);
}
#else
# define dnsort(dn, size) ((void)0)
# define sort_and_display_files(dn, nfiles) display_files(dn, nfiles)
#endif
/* Returns NULL-terminated malloced vector of pointers (or NULL) */
static struct dnode **scan_one_dir(const char *path, unsigned *nfiles_p)
{
struct dnode *dn, *cur, **dnp;
struct dirent *entry;
DIR *dir;
unsigned i, nfiles;
*nfiles_p = 0;
dir = warn_opendir(path);
if (dir == NULL) {
G.exit_code = EXIT_FAILURE;
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return NULL; /* could not open the dir */
}
dn = NULL;
nfiles = 0;
1999-10-05 21:54:54 +05:30
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 (!(option_mask32 & (OPT_a|OPT_A)))
continue; /* skip all dotfiles if no -a/-A */
if (!(option_mask32 & OPT_a)
&& (!entry->d_name[1] || (entry->d_name[1] == '.' && !entry->d_name[2]))
) {
continue; /* if only -A, skip . and .. but show other dotfiles */
}
}
fullname = concat_path_file(path, entry->d_name);
cur = my_stat(fullname, bb_basename(fullname), 0);
2006-10-28 18:07:16 +05:30
if (!cur) {
free(fullname);
continue;
2006-10-28 18:07:16 +05:30
}
cur->fname_allocated = 1;
cur->dn_next = dn;
2002-08-22 23:43:54 +05:30
dn = cur;
nfiles++;
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}
closedir(dir);
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if (dn == NULL)
return NULL;
/* now that we know how many files there are
2006-10-28 18:32:55 +05:30
* allocate memory for an array to hold dnode pointers
2002-08-22 23:43:54 +05:30
*/
*nfiles_p = nfiles;
2002-08-22 23:43:54 +05:30
dnp = dnalloc(nfiles);
for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
dnp[i] = dn; /* save pointer to node in array */
dn = dn->dn_next;
if (!dn)
break;
2000-02-12 03:25:04 +05:30
}
2006-10-28 18:07:16 +05:30
return dnp;
1999-10-05 21:54:54 +05:30
}
#if ENABLE_DESKTOP
/* http://www.opengroup.org/onlinepubs/9699919799/utilities/ls.html
* If any of the -l, -n, -s options is specified, each list
* of files within the directory shall be preceded by a
* status line indicating the number of file system blocks
* occupied by files in the directory in 512-byte units if
* the -k option is not specified, or 1024-byte units if the
* -k option is specified, rounded up to the next integral
* number of units.
*/
/* by Jorgen Overgaard (jorgen AT antistaten.se) */
static off_t calculate_blocks(struct dnode **dn)
{
uoff_t blocks = 1;
if (dn) {
while (*dn) {
/* st_blocks is in 512 byte blocks */
blocks += (*dn)->dn_blocks;
dn++;
}
}
/* Even though standard says use 512 byte blocks, coreutils use 1k */
/* Actually, we round up by calculating (blocks + 1) / 2,
* "+ 1" was done when we initialized blocks to 1 */
return blocks >> 1;
}
#endif
static void scan_and_display_dirs_recur(struct dnode **dn, int first)
{
unsigned nfiles;
struct dnode **subdnp;
for (; *dn; dn++) {
if (G.show_dirname || (option_mask32 & OPT_R)) {
if (!first)
bb_putchar('\n');
first = 0;
printf("%s:\n", (*dn)->fullname);
}
subdnp = scan_one_dir((*dn)->fullname, &nfiles);
#if ENABLE_DESKTOP
if (option_mask32 & (OPT_s|OPT_l)) {
printf("total %"OFF_FMT"u\n", calculate_blocks(subdnp));
}
#endif
if (nfiles > 0) {
/* list all files at this level */
sort_and_display_files(subdnp, nfiles);
if (ENABLE_FEATURE_LS_RECURSIVE
&& (option_mask32 & OPT_R)
) {
struct dnode **dnd;
unsigned dndirs;
/* recursive - list the sub-dirs */
dnd = splitdnarray(subdnp, SPLIT_SUBDIR);
dndirs = count_dirs(subdnp, SPLIT_SUBDIR);
if (dndirs > 0) {
dnsort(dnd, dndirs);
scan_and_display_dirs_recur(dnd, 0);
/* free the array of dnode pointers to the dirs */
free(dnd);
}
}
/* free the dnodes and the fullname mem */
dfree(subdnp);
}
}
}
2008-07-05 14:48:54 +05:30
int ls_main(int argc UNUSED_PARAM, char **argv)
{ /* ^^^^^^^^^^^^^^^^^ note: if FTPD, argc can be wrong, see ftpd.c */
struct dnode **dnd;
struct dnode **dnf;
struct dnode **dnp;
struct dnode *dn;
struct dnode *cur;
unsigned opt;
unsigned nfiles;
unsigned dnfiles;
unsigned dndirs;
unsigned i;
#if ENABLE_FEATURE_LS_COLOR
/* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
/* coreutils 6.10:
* # ls --color=BOGUS
* ls: invalid argument 'BOGUS' for '--color'
* Valid arguments are:
* 'always', 'yes', 'force'
* 'never', 'no', 'none'
* 'auto', 'tty', 'if-tty'
* (and substrings: "--color=alwa" work too)
*/
static const char color_str[] ALIGN1 =
"always\0""yes\0""force\0"
"auto\0""tty\0""if-tty\0";
/* need to initialize since --color has _an optional_ argument */
const char *color_opt = color_str; /* "always" */
#endif
#if ENABLE_LONG_OPTS
static const char ls_longopts[] ALIGN1 =
"full-time\0" No_argument "\xff"
"group-directories-first\0" No_argument "\xfe"
"color\0" Optional_argument "\xfd"
;
#endif
INIT_G();
init_unicode();
#if ENABLE_FEATURE_LS_WIDTH
/* obtain the terminal width */
G_terminal_width = get_terminal_width(STDIN_FILENO);
/* go one less... */
G_terminal_width--;
#endif
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/* process options */
getopt32: remove opt_complementary function old new delta vgetopt32 1318 1392 +74 runsvdir_main 703 713 +10 bb_make_directory 423 425 +2 collect_cpu 546 545 -1 opt_chars 3 - -3 opt_complementary 4 - -4 tftpd_main 567 562 -5 ntp_init 476 471 -5 zcip_main 1266 1256 -10 xxd_main 428 418 -10 whois_main 140 130 -10 who_main 463 453 -10 which_main 212 202 -10 wget_main 2535 2525 -10 watchdog_main 291 281 -10 watch_main 222 212 -10 vlock_main 399 389 -10 uuencode_main 332 322 -10 uudecode_main 316 306 -10 unlink_main 45 35 -10 udhcpd_main 1482 1472 -10 udhcpc_main 2762 2752 -10 tune2fs_main 290 280 -10 tunctl_main 366 356 -10 truncate_main 218 208 -10 tr_main 518 508 -10 time_main 1134 1124 -10 tftp_main 286 276 -10 telnetd_main 1873 1863 -10 tcpudpsvd_main 1785 1775 -10 taskset_main 521 511 -10 tar_main 1009 999 -10 tail_main 1644 1634 -10 syslogd_main 1967 1957 -10 switch_root_main 368 358 -10 svlogd_main 1454 1444 -10 sv 1296 1286 -10 stat_main 104 94 -10 start_stop_daemon_main 1028 1018 -10 split_main 542 532 -10 sort_main 796 786 -10 slattach_main 624 614 -10 shuf_main 504 494 -10 setsid_main 96 86 -10 setserial_main 1132 1122 -10 setfont_main 388 378 -10 setconsole_main 78 68 -10 sendmail_main 1209 1199 -10 sed_main 677 667 -10 script_main 1077 1067 -10 run_parts_main 325 315 -10 rtcwake_main 454 444 -10 rm_main 175 165 -10 reformime_main 119 109 -10 readlink_main 123 113 -10 rdate_main 246 236 -10 pwdx_main 189 179 -10 pstree_main 317 307 -10 pscan_main 663 653 -10 popmaildir_main 818 808 -10 pmap_main 80 70 -10 nc_main 1042 1032 -10 mv_main 558 548 -10 mountpoint_main 477 467 -10 mount_main 1264 1254 -10 modprobe_main 768 758 -10 modinfo_main 333 323 -10 mktemp_main 200 190 -10 mkswap_main 324 314 -10 mkfs_vfat_main 1489 1479 -10 microcom_main 715 705 -10 md5_sha1_sum_main 521 511 -10 man_main 867 857 -10 makedevs_main 1052 1042 -10 ls_main 563 553 -10 losetup_main 432 422 -10 loadfont_main 89 79 -10 ln_main 524 514 -10 link_main 75 65 -10 ipcalc_main 544 534 -10 iostat_main 2397 2387 -10 install_main 768 758 -10 id_main 480 470 -10 i2cset_main 1239 1229 -10 i2cget_main 380 370 -10 i2cdump_main 1482 1472 -10 i2cdetect_main 682 672 -10 hwclock_main 406 396 -10 httpd_main 741 731 -10 grep_main 837 827 -10 getty_main 1559 1549 -10 fuser_main 297 287 -10 ftpgetput_main 345 335 -10 ftpd_main 2232 2222 -10 fstrim_main 251 241 -10 fsfreeze_main 77 67 -10 fsck_minix_main 2921 2911 -10 flock_main 314 304 -10 flashcp_main 740 730 -10 flash_eraseall_main 833 823 -10 fdformat_main 532 522 -10 expand_main 680 670 -10 eject_main 335 325 -10 dumpleases_main 630 620 -10 du_main 314 304 -10 dos2unix_main 441 431 -10 diff_main 1350 1340 -10 df_main 1064 1054 -10 date_main 1095 1085 -10 cut_main 961 951 -10 cryptpw_main 228 218 -10 crontab_main 575 565 -10 crond_main 1149 1139 -10 cp_main 370 360 -10 common_traceroute_main 3834 3824 -10 common_ping_main 1767 1757 -10 comm_main 239 229 -10 cmp_main 655 645 -10 chrt_main 379 369 -10 chpst_main 704 694 -10 chpasswd_main 308 298 -10 chown_main 171 161 -10 chmod_main 158 148 -10 cat_main 428 418 -10 bzip2_main 120 110 -10 blkdiscard_main 264 254 -10 base64_main 221 211 -10 arping_main 1665 1655 -10 ar_main 556 546 -10 adjtimex_main 406 396 -10 adduser_main 882 872 -10 addgroup_main 411 401 -10 acpid_main 1198 1188 -10 optstring 11 - -11 opt_string 18 - -18 OPT_STR 25 - -25 ubi_tools_main 1288 1258 -30 ls_options 31 - -31 ------------------------------------------------------------------------------ (add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383) Total: -1297 bytes text data bss dec hex filename 915428 485 6876 922789 e14a5 busybox_old 914629 485 6872 921986 e1182 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-09 01:25:02 +05:30
opt = getopt32long(argv, "^"
ls_options
"\0"
/* -n and -g imply -l */
"nl:gl"
/* --full-time implies -l */
IF_FEATURE_LS_TIMESTAMPS(IF_LONG_OPTS(":\xff""l"))
/* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html:
* in some pairs of opts, only last one takes effect:
*/
IF_FEATURE_LS_TIMESTAMPS(IF_FEATURE_LS_SORTFILES(":t-S:S-t")) /* time/size */
// ":m-l:l-m" - we don't have -m
IF_FEATURE_LS_FOLLOWLINKS(":H-L:L-H")
":C-xl:x-Cl:l-xC" /* bycols/bylines/long */
":C-1:1-C" /* bycols/oneline */
":x-1:1-x" /* bylines/oneline (not in SuS, but in GNU coreutils 8.4) */
IF_FEATURE_LS_TIMESTAMPS(":c-u:u-c") /* mtime/atime */
/* -w NUM: */
IF_FEATURE_LS_WIDTH(":w+")
, ls_longopts
IF_FEATURE_LS_WIDTH(, /*-T*/ NULL, /*-w*/ &G_terminal_width)
IF_FEATURE_LS_COLOR(, &color_opt)
);
#if 0 /* option bits debug */
bb_error_msg("opt:0x%08x l:%x H:%x color:%x dirs:%x", opt, OPT_l, OPT_H, OPT_color, OPT_dirs_first);
if (opt & OPT_c ) bb_error_msg("-c");
if (opt & OPT_l ) bb_error_msg("-l");
if (opt & OPT_H ) bb_error_msg("-H");
if (opt & OPT_color ) bb_error_msg("--color");
if (opt & OPT_dirs_first) bb_error_msg("--group-directories-first");
if (opt & OPT_full_time ) bb_error_msg("--full-time");
exit(0);
#endif
#if ENABLE_SELINUX
if (opt & OPT_Z) {
if (!is_selinux_enabled())
option_mask32 &= ~OPT_Z;
}
#endif
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#if ENABLE_FEATURE_LS_COLOR
/* set G_show_color = 1/0 */
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if (ENABLE_FEATURE_LS_COLOR_IS_DEFAULT && isatty(STDOUT_FILENO)) {
char *p = getenv("LS_COLORS");
/* LS_COLORS is unset, or (not empty && not "none") ? */
if (!p || (p[0] && strcmp(p, "none") != 0))
G_show_color = 1;
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}
if (opt & OPT_color) {
if (color_opt[0] == 'n')
G_show_color = 0;
else switch (index_in_substrings(color_str, color_opt)) {
case 3:
case 4:
case 5:
if (isatty(STDOUT_FILENO)) {
case 0:
case 1:
case 2:
G_show_color = 1;
}
}
}
#endif
/* sort out which command line options take precedence */
if (ENABLE_FEATURE_LS_RECURSIVE && (opt & OPT_d))
option_mask32 &= ~OPT_R; /* no recurse if listing only dir */
if (!(opt & OPT_l)) { /* not -l? */
if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
/* when to sort by time? -t[cu] sorts by time even with -l */
/* (this is achieved by opt_flags[] element for -t) */
/* without -l, bare -c or -u enable sort too */
/* (with -l, bare -c or -u just select which time to show) */
if (opt & (OPT_c|OPT_u)) {
option_mask32 |= OPT_t;
}
}
}
/* choose a display format if one was not already specified by an option */
if (!(option_mask32 & (OPT_l|OPT_1|OPT_x|OPT_C)))
option_mask32 |= (isatty(STDOUT_FILENO) ? OPT_C : OPT_1);
if (ENABLE_FTPD && applet_name[0] == 'f') {
/* ftpd secret backdoor. dirs first are much nicer */
option_mask32 |= OPT_dirs_first;
}
argv += optind;
if (!argv[0])
*--argv = (char*)".";
if (argv[1])
G.show_dirname = 1; /* 2 or more items? label directories */
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/* stuff the command line file names into a dnode array */
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dn = NULL;
nfiles = 0;
do {
cur = my_stat(*argv, *argv,
/* follow links on command line unless -l, -s or -F: */
!(option_mask32 & (OPT_l|OPT_s|OPT_F))
/* ... or if -H: */
|| (option_mask32 & OPT_H)
/* ... or if -L, but my_stat always follows links if -L */
);
argv++;
if (!cur)
continue;
/*cur->fname_allocated = 0; - already is */
cur->dn_next = dn;
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dn = cur;
nfiles++;
} while (*argv);
/* nfiles _may_ be 0 here - try "ls doesnt_exist" */
if (nfiles == 0)
return G.exit_code;
/* now that we know how many files there are
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* allocate memory for an array to hold dnode pointers
*/
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dnp = dnalloc(nfiles);
for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
dnp[i] = dn; /* save pointer to node in array */
dn = dn->dn_next;
if (!dn)
break;
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}
if (option_mask32 & OPT_d) {
sort_and_display_files(dnp, nfiles);
} else {
dnd = splitdnarray(dnp, SPLIT_DIR);
dnf = splitdnarray(dnp, SPLIT_FILE);
dndirs = count_dirs(dnp, SPLIT_DIR);
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dnfiles = nfiles - dndirs;
if (dnfiles > 0) {
sort_and_display_files(dnf, dnfiles);
if (ENABLE_FEATURE_CLEAN_UP)
free(dnf);
}
if (dndirs > 0) {
dnsort(dnd, dndirs);
scan_and_display_dirs_recur(dnd, dnfiles == 0);
if (ENABLE_FEATURE_CLEAN_UP)
free(dnd);
}
}
if (ENABLE_FEATURE_CLEAN_UP)
dfree(dnp);
return G.exit_code;
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}