| /* vi: set sw=4 ts=4: */ |
| /* |
| * tiny-ls.c version 0.1.0: A minimalist 'ls' |
| * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com> |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| */ |
| |
| /* |
| * 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 |
| * 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. ls -l of a directory doesn't give "total <blocks>" header |
| * 2. ls of a symlink to a directory doesn't list directory contents |
| * 3. hidden files can make column width too large |
| * |
| * 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? |
| */ |
| |
| enum { |
| TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */ |
| COLUMN_GAP = 2, /* includes the file type char */ |
| }; |
| |
| /************************************************************************/ |
| |
| #include "busybox.h" |
| #include <getopt.h> |
| |
| /* what is the overall style of the listing */ |
| #define STYLE_COLUMNS (1U<<21) /* fill columns */ |
| #define STYLE_LONG (2U<<21) /* one record per line, extended info */ |
| #define STYLE_SINGLE (3U<<21) /* one record per line */ |
| |
| #define STYLE_MASK STYLE_SINGLE |
| #define STYLE_ONE_RECORD_FLAG STYLE_LONG |
| |
| /* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */ |
| /* what file information will be listed */ |
| #define LIST_INO (1U<<0) |
| #define LIST_BLOCKS (1U<<1) |
| #define LIST_MODEBITS (1U<<2) |
| #define LIST_NLINKS (1U<<3) |
| #define LIST_ID_NAME (1U<<4) |
| #define LIST_ID_NUMERIC (1U<<5) |
| #define LIST_CONTEXT (1U<<6) |
| #define LIST_SIZE (1U<<7) |
| #define LIST_DEV (1U<<8) |
| #define LIST_DATE_TIME (1U<<9) |
| #define LIST_FULLTIME (1U<<10) |
| #define LIST_FILENAME (1U<<11) |
| #define LIST_SYMLINK (1U<<12) |
| #define LIST_FILETYPE (1U<<13) |
| #define LIST_EXEC (1U<<14) |
| |
| #define LIST_MASK ((LIST_EXEC << 1) - 1) |
| |
| /* what files will be displayed */ |
| #define DISP_DIRNAME (1U<<15) /* 2 or more items? label directories */ |
| #define DISP_HIDDEN (1U<<16) /* show filenames starting with . */ |
| #define DISP_DOT (1U<<17) /* show . and .. */ |
| #define DISP_NOLIST (1U<<18) /* show directory as itself, not contents */ |
| #define DISP_RECURSIVE (1U<<19) /* show directory and everything below it */ |
| #define DISP_ROWS (1U<<20) /* print across rows */ |
| |
| #define DISP_MASK (((DISP_ROWS << 1) - 1) & ~(DISP_DIRNAME - 1)) |
| |
| // CONFIG_FEATURE_LS_SORTFILES |
| /* how will the files be sorted */ |
| #define SORT_ORDER_FORWARD 0 /* sort in reverse order */ |
| #define SORT_ORDER_REVERSE (1U<<27) /* sort in reverse order */ |
| |
| #define SORT_NAME 0 /* sort by file name */ |
| #define SORT_SIZE (1U<<28) /* sort by file size */ |
| #define SORT_ATIME (2U<<28) /* sort by last access time */ |
| #define SORT_CTIME (3U<<28) /* sort by last change time */ |
| #define SORT_MTIME (4U<<28) /* sort by last modification time */ |
| #define SORT_VERSION (5U<<28) /* sort by version */ |
| #define SORT_EXT (6U<<28) /* sort by file name extension */ |
| #define SORT_DIR (7U<<28) /* sort by file or directory */ |
| |
| #define SORT_MASK (7U<<28) |
| |
| /* which of the three times will be used */ |
| #define TIME_CHANGE ((1U<<23) * ENABLE_FEATURE_LS_TIMESTAMPS) |
| #define TIME_ACCESS ((1U<<24) * ENABLE_FEATURE_LS_TIMESTAMPS) |
| #define TIME_MASK ((3U<<23) * ENABLE_FEATURE_LS_TIMESTAMPS) |
| |
| #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS |
| #define FOLLOW_LINKS (1U<<25) |
| #endif |
| #ifdef CONFIG_FEATURE_HUMAN_READABLE |
| #define LS_DISP_HR (1U<<26) |
| #endif |
| |
| #define LIST_SHORT (LIST_FILENAME) |
| #define LIST_ISHORT (LIST_INO | LIST_FILENAME) |
| #define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \ |
| LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK) |
| #define LIST_ILONG (LIST_INO | LIST_LONG) |
| |
| #define SPLIT_DIR 1 |
| #define SPLIT_FILE 0 |
| #define SPLIT_SUBDIR 2 |
| |
| #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f) |
| #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)]) |
| |
| #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR) |
| # define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)]) |
| #endif |
| |
| /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */ |
| #ifdef CONFIG_FEATURE_LS_COLOR |
| |
| static int show_color = 0; |
| |
| /* long option entry used only for --color, which has no short option |
| * equivalent. */ |
| static const struct option ls_color_opt[] = |
| { |
| {"color", optional_argument, NULL, 1}, |
| {NULL, 0, NULL, 0} |
| }; |
| |
| #define COLOR(mode) ("\000\043\043\043\042\000\043\043"\ |
| "\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)]) |
| #define ATTR(mode) ("\00\00\01\00\01\00\01\00"\ |
| "\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)]) |
| #endif |
| |
| /* |
| * a directory entry and its stat info are stored here |
| */ |
| struct dnode { /* the basic node */ |
| char *name; /* the dir entry name */ |
| char *fullname; /* the dir entry name */ |
| int allocated; |
| struct stat dstat; /* the file stat info */ |
| #ifdef CONFIG_SELINUX |
| security_context_t sid; |
| #endif |
| struct dnode *next; /* point at the next node */ |
| }; |
| typedef struct dnode dnode_t; |
| |
| static struct dnode **list_dir(const char *); |
| static struct dnode **dnalloc(int); |
| static int list_single(struct dnode *); |
| |
| static unsigned int all_fmt; |
| |
| #ifdef CONFIG_FEATURE_AUTOWIDTH |
| static int terminal_width = TERMINAL_WIDTH; |
| static unsigned short tabstops = COLUMN_GAP; |
| #else |
| #define tabstops COLUMN_GAP |
| #define terminal_width TERMINAL_WIDTH |
| #endif |
| |
| static int status = EXIT_SUCCESS; |
| |
| static struct dnode *my_stat(char *fullname, char *name) |
| { |
| struct stat dstat; |
| struct dnode *cur; |
| #ifdef CONFIG_SELINUX |
| security_context_t sid=NULL; |
| #endif |
| |
| #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS |
| if (all_fmt & FOLLOW_LINKS) { |
| #ifdef CONFIG_SELINUX |
| if (is_selinux_enabled()) { |
| getfilecon(fullname,&sid); |
| } |
| #endif |
| if (stat(fullname, &dstat)) { |
| bb_perror_msg("%s", fullname); |
| status = EXIT_FAILURE; |
| return 0; |
| } |
| } else |
| #endif |
| { |
| #ifdef CONFIG_SELINUX |
| if (is_selinux_enabled()) { |
| lgetfilecon(fullname,&sid); |
| } |
| #endif |
| if (lstat(fullname, &dstat)) { |
| bb_perror_msg("%s", fullname); |
| status = EXIT_FAILURE; |
| return 0; |
| } |
| } |
| |
| cur = (struct dnode *) xmalloc(sizeof(struct dnode)); |
| cur->fullname = fullname; |
| cur->name = name; |
| cur->dstat = dstat; |
| #ifdef CONFIG_SELINUX |
| cur->sid = sid; |
| #endif |
| return cur; |
| } |
| |
| /*----------------------------------------------------------------------*/ |
| #ifdef CONFIG_FEATURE_LS_COLOR |
| static char fgcolor(mode_t mode) |
| { |
| /* Check wheter the file is existing (if so, color it red!) */ |
| if (errno == ENOENT) { |
| return '\037'; |
| } |
| if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH))) |
| return COLOR(0xF000); /* File is executable ... */ |
| return COLOR(mode); |
| } |
| |
| /*----------------------------------------------------------------------*/ |
| static char bgcolor(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 defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR) |
| static char append_char(mode_t mode) |
| { |
| if (!(all_fmt & LIST_FILETYPE)) |
| return '\0'; |
| if (S_ISDIR(mode)) |
| return '/'; |
| if (!(all_fmt & LIST_EXEC)) |
| return '\0'; |
| if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH))) |
| return '*'; |
| return APPCHAR(mode); |
| } |
| #endif |
| |
| /*----------------------------------------------------------------------*/ |
| |
| #define countdirs(A,B) count_dirs((A), (B), 1) |
| #define countsubdirs(A,B) count_dirs((A), (B), 0) |
| |
| static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs) |
| { |
| int i, dirs; |
| |
| if (dn == NULL || nfiles < 1) |
| return (0); |
| dirs = 0; |
| for (i = 0; i < nfiles; i++) { |
| if (S_ISDIR(dn[i]->dstat.st_mode) |
| && (notsubdirs || |
| ((dn[i]->name[0] != '.') || (dn[i]->name[1] |
| && ((dn[i]->name[1] != '.') |
| || dn[i]->name[2]))))) |
| dirs++; |
| } |
| return (dirs); |
| } |
| |
| static int countfiles(struct dnode **dnp) |
| { |
| int nfiles; |
| struct dnode *cur; |
| |
| if (dnp == NULL) |
| return (0); |
| nfiles = 0; |
| for (cur = dnp[0]; cur->next != NULL; cur = cur->next) |
| nfiles++; |
| nfiles++; |
| return (nfiles); |
| } |
| |
| /* get memory to hold an array of pointers */ |
| static struct dnode **dnalloc(int num) |
| { |
| struct dnode **p; |
| |
| if (num < 1) |
| return (NULL); |
| |
| p = (struct dnode **) xcalloc((size_t) num, (size_t) (sizeof(struct dnode *))); |
| return (p); |
| } |
| |
| #ifdef CONFIG_FEATURE_LS_RECURSIVE |
| static void dfree(struct dnode **dnp, int nfiles) |
| { |
| int i; |
| |
| if (dnp == NULL) |
| return; |
| |
| for (i = 0; i < nfiles; i++) { |
| struct dnode *cur = dnp[i]; |
| if(cur->allocated) |
| free(cur->fullname); /* free the filename */ |
| free(cur); /* free the dnode */ |
| } |
| free(dnp); /* free the array holding the dnode pointers */ |
| } |
| #else |
| #define dfree(...) |
| #endif |
| |
| static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which) |
| { |
| int dncnt, i, d; |
| struct dnode **dnp; |
| |
| if (dn == NULL || nfiles < 1) |
| return (NULL); |
| |
| /* count how many dirs and regular files there are */ |
| if (which == SPLIT_SUBDIR) |
| dncnt = countsubdirs(dn, nfiles); |
| else { |
| dncnt = countdirs(dn, nfiles); /* assume we are looking for dirs */ |
| if (which == SPLIT_FILE) |
| dncnt = nfiles - dncnt; /* looking for files */ |
| } |
| |
| /* allocate a file array and a dir array */ |
| dnp = dnalloc(dncnt); |
| |
| /* copy the entrys into the file or dir array */ |
| for (d = i = 0; i < nfiles; i++) { |
| if (S_ISDIR(dn[i]->dstat.st_mode)) { |
| if (which & (SPLIT_DIR|SPLIT_SUBDIR)) { |
| if ((which & SPLIT_DIR) |
| || ((dn[i]->name[0] != '.') |
| || (dn[i]->name[1] |
| && ((dn[i]->name[1] != '.') |
| || dn[i]->name[2])))) { |
| dnp[d++] = dn[i]; |
| } |
| } |
| } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) { |
| dnp[d++] = dn[i]; |
| } |
| } |
| return (dnp); |
| } |
| |
| /*----------------------------------------------------------------------*/ |
| #ifdef CONFIG_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 int sort_opts = all_fmt & SORT_MASK; |
| int dif; |
| |
| dif = 0; /* assume SORT_NAME */ |
| if (sort_opts == SORT_SIZE) { |
| 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); |
| } |