| /* |
| * Mini ls implementation for busybox |
| * |
| * Copyright (C) 1998 by Erik Andersen <andersee@debian.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #if fooBar |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <dirent.h> |
| #include "internal.h" |
| |
| |
| static const char ls_usage[] = "ls [OPTION]... [FILE]...\n" |
| "List information about the FILEs (the current directory by default).\n"; |
| |
| int oneFlag=FALSE; |
| int allFlag=FALSE; |
| int directoryFlag=FALSE; |
| int longFlag=FALSE; |
| int typeFlag=FALSE; |
| int dereferenceFlag=FALSE; |
| int recursiveFlag=FALSE; |
| |
| static int fileAction(const char *fileName) |
| { |
| if ( allFlag==FALSE && ((strcmp(fileName, "..") == 0) |
| || (strcmp(fileName, ".") == 0)) ) { |
| return( TRUE); |
| } |
| //struct stat statBuf; |
| //if (stat(fileName, &statBuf) > 0) { |
| fprintf(stdout, "%s\n", fileName); |
| return( TRUE); |
| //} |
| //else { |
| // perror(fileName); |
| // return( FALSE); |
| // } |
| } |
| |
| static int dirAction(const char *fileName) |
| { |
| DIR *dir; |
| struct dirent *entry; |
| |
| fprintf(stdout, "%s\n", fileName); |
| |
| dir = opendir( fileName); |
| if (!dir) { |
| perror("Can't open directory"); |
| exit(FALSE); |
| } |
| while ((entry = readdir(dir)) != NULL) { |
| recursiveAction( entry->d_name, recursiveFlag, dereferenceFlag, fileAction, dirAction); |
| } |
| return( TRUE); |
| } |
| |
| int ls_main(int argc, char **argv) |
| { |
| if (argc <= 1) { |
| char buf[NAME_MAX]; |
| getcwd( buf, NAME_MAX); |
| dirAction( buf); |
| } |
| |
| /* peel of the "ls" */ |
| argc--; |
| argv++; |
| |
| /* Parse any options */ |
| while (**argv == '-') { |
| while (*++(*argv)) switch (**argv) { |
| case '1': |
| oneFlag = TRUE; |
| break; |
| case 'a': |
| allFlag = TRUE; |
| break; |
| case 'd': |
| directoryFlag = TRUE; |
| break; |
| case 'l': |
| longFlag = TRUE; |
| break; |
| case 'F': |
| typeFlag = TRUE; |
| break; |
| case 'L': |
| dereferenceFlag = TRUE; |
| break; |
| case 'R': |
| recursiveFlag = TRUE; |
| break; |
| default: |
| fprintf(stderr, "Usage: %s\n", ls_usage); |
| exit( FALSE); |
| } |
| argc--; |
| argv++; |
| } |
| |
| /* Ok, ready to do the deed now */ |
| fprintf(stderr, "B\n"); |
| while (argc-- > 1) { |
| fprintf(stderr, "C\n"); |
| recursiveAction( *argv, recursiveFlag, dereferenceFlag, fileAction, dirAction); |
| } |
| exit(TRUE); |
| } |
| |
| |
| |
| #else |
| |
| |
| #include "internal.h" |
| /* |
| * tiny-ls.c version 0.1.0: A minimalist 'ls' |
| * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| /* |
| * 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. messy output if you mix files and directories on the command line |
| * 2. ls -l of a directory doesn't give "total <blocks>" header |
| * 3. ls of a symlink to a directory doesn't list directory contents |
| * 4. 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? |
| */ |
| |
| #define FEATURE_USERNAME /* show username/groupnames (libc6 uses NSS) */ |
| #define FEATURE_TIMESTAMPS /* show file timestamps */ |
| #define FEATURE_AUTOWIDTH /* calculate terminal & column widths */ |
| #define FEATURE_FILETYPECHAR /* enable -p and -F */ |
| |
| #define TERMINAL_WIDTH 80 /* use 79 if your terminal has linefold bug */ |
| #define COLUMN_WIDTH 14 /* default if AUTOWIDTH not defined */ |
| #define COLUMN_GAP 2 /* includes the file type char, if present */ |
| #define HAS_REWINDDIR |
| |
| /************************************************************************/ |
| |
| |
| #if 1 /* FIXME libc 6 */ |
| # include <linux/types.h> |
| #else |
| # include <sys/types.h> |
| #endif |
| #include <sys/stat.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #ifdef FEATURE_USERNAME |
| #include <pwd.h> |
| #include <grp.h> |
| #endif |
| #ifdef FEATURE_TIMESTAMPS |
| #include <time.h> |
| #endif |
| |
| #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f) |
| #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)]) |
| #ifdef FEATURE_FILETYPECHAR |
| #define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)]) |
| #endif |
| |
| #ifndef MAJOR |
| #define MAJOR(dev) (((dev)>>8)&0xff) |
| #define MINOR(dev) ((dev)&0xff) |
| #endif |
| |
| #define MODE1 "rwxrwxrwx" |
| #define MODE0 "---------" |
| #define SMODE1 "..s..s..t" |
| #define SMODE0 "..S..S..T" |
| |
| /* The 9 mode bits to test */ |
| |
| static const umode_t MBIT[] = { |
| S_IRUSR, S_IWUSR, S_IXUSR, |
| S_IRGRP, S_IWGRP, S_IXGRP, |
| S_IROTH, S_IWOTH, S_IXOTH |
| }; |
| |
| /* The special bits. If set, display SMODE0/1 instead of MODE0/1 */ |
| |
| static const umode_t SBIT[] = { |
| 0, 0, S_ISUID, |
| 0, 0, S_ISGID, |
| 0, 0, S_ISVTX |
| }; |
| |
| #define FMT_AUTO 0 |
| #define FMT_LONG 1 /* one record per line, extended info */ |
| #define FMT_SINGLE 2 /* one record per line */ |
| #define FMT_ROWS 3 /* print across rows */ |
| #define FMT_COLUMNS 3 /* fill columns (same, since we don't sort) */ |
| |
| #define TIME_MOD 0 |
| #define TIME_CHANGE 1 |
| #define TIME_ACCESS 2 |
| |
| #define DISP_FTYPE 1 /* show character for file type */ |
| #define DISP_EXEC 2 /* show '*' if regular executable file */ |
| #define DISP_HIDDEN 4 /* show files starting . (except . and ..) */ |
| #define DISP_DOT 8 /* show . and .. */ |
| #define DISP_NUMERIC 16 /* numeric uid and gid */ |
| #define DISP_FULLTIME 32 /* show extended time display */ |
| #define DIR_NOLIST 64 /* show directory as itself, not contents */ |
| #define DISP_DIRNAME 128 /* show directory name (for internal use) */ |
| #define DIR_RECURSE 256 /* -R (not yet implemented) */ |
| |
| static unsigned char display_fmt = FMT_AUTO; |
| static unsigned short opts = 0; |
| static unsigned short column = 0; |
| |
| #ifdef FEATURE_AUTOWIDTH |
| static unsigned short terminal_width = 0, column_width = 0; |
| #else |
| #define terminal_width TERMINAL_WIDTH |
| #define column_width COLUMN_WIDTH |
| #endif |
| |
| #ifdef FEATURE_TIMESTAMPS |
| static unsigned char time_fmt = TIME_MOD; |
| #endif |
| |
| #define wr(data,len) fwrite(data, 1, len, stdout) |
| |
| static void writenum(long val, short minwidth) |
| { |
| char scratch[20]; |
| |
| char *p = scratch + sizeof(scratch); |
| short len = 0; |
| short neg = (val < 0); |
| |
| if (neg) val = -val; |
| do |
| *--p = (val % 10) + '0', len++, val /= 10; |
| while (val); |
| if (neg) |
| *--p = '-', len++; |
| while (len < minwidth) |
| *--p = ' ', len++; |
| wr(p, len); |
| column += len; |
| } |
| |
| static void newline(void) |
| { |
| if (column > 0) { |
| wr("\n", 1); |
| column = 0; |
| } |
| } |
| |
| static void tab(short col) |
| { |
| static const char spaces[] = " "; |
| #define nspaces ((sizeof spaces)-1) /* null terminator! */ |
| |
| short n = col - column; |
| |
| if (n > 0) { |
| column = col; |
| while (n > nspaces) { |
| wr(spaces, nspaces); |
| n -= nspaces; |
| } |
| /* must be 1...(sizeof spaces) left */ |
| wr(spaces, n); |
| } |
| #undef nspaces |
| } |
| |
| #ifdef FEATURE_FILETYPECHAR |
| static char append_char(umode_t mode) |
| { |
| if (!(opts & DISP_FTYPE)) |
| return '\0'; |
| if ((opts & DISP_EXEC) && S_ISREG(mode) && (mode & (S_IXUSR|S_IXGRP|S_IXOTH))) |
| return '*'; |
| return APPCHAR(mode); |
| } |
| #endif |
| |
| /** |
| ** |
| ** Display a file or directory as a single item |
| ** (in either long or short format) |
| ** |
| **/ |
| |
| static void list_single(const char *name, struct stat *info) |
| { |
| char scratch[20]; |
| short len = strlen(name); |
| #ifdef FEATURE_FILETYPECHAR |
| char append = append_char(info->st_mode); |
| #endif |
| |
| if (display_fmt == FMT_LONG) { |
| umode_t mode = info->st_mode; |
| int i; |
| |
| scratch[0] = TYPECHAR(mode); |
| for (i=0; i<9; i++) |
| if (mode & SBIT[i]) |
| scratch[i+1] = (mode & MBIT[i]) |
| ? SMODE1[i] |
| : SMODE0[i]; |
| else |
| scratch[i+1] = (mode & MBIT[i]) |
| ? MODE1[i] |
| : MODE0[i]; |
| newline(); |
| wr(scratch, 10); |
| column=10; |
| writenum((long)info->st_nlink,(short)4); |
| fputs(" ", stdout); |
| #ifdef FEATURE_USERNAME |
| if (!(opts & DISP_NUMERIC)) { |
| struct passwd *pw = getpwuid(info->st_uid); |
| if (pw) |
| fputs(pw->pw_name, stdout); |
| else |
| writenum((long)info->st_uid,(short)0); |
| } else |
| #endif |
| writenum((long)info->st_uid,(short)0); |
| tab(24); |
| #ifdef FEATURE_USERNAME |
| if (!(opts & DISP_NUMERIC)) { |
| struct group *gr = getgrgid(info->st_gid); |
| if (gr) |
| fputs(gr->gr_name, stdout); |
| else |
| writenum((long)info->st_gid,(short)0); |
| } else |
| #endif |
| writenum((long)info->st_gid,(short)0); |
| tab(33); |
| if (S_ISBLK(mode) || S_ISCHR(mode)) { |
| writenum((long)MAJOR(info->st_rdev),(short)3); |
| fputs(", ", stdout); |
| writenum((long)MINOR(info->st_rdev),(short)3); |
| } |
| else |
| writenum((long)info->st_size,(short)8); |
| fputs(" ", stdout); |
| #ifdef FEATURE_TIMESTAMPS |
| { |
| time_t cal; |
| char *string; |
| |
| switch(time_fmt) { |
| case TIME_CHANGE: |
| cal=info->st_ctime; break; |
| case TIME_ACCESS: |
| cal=info->st_atime; break; |
| default: |
| cal=info->st_mtime; break; |
| } |
| string=ctime(&cal); |
| if (opts & DISP_FULLTIME) |
| wr(string,24); |
| else { |
| time_t age = time(NULL) - cal; |
| wr(string+4,7); /* mmm_dd_ */ |
| if(age < 3600L*24*365/2 && age > -15*60) |
| /* hh:mm if less than 6 months old */ |
| wr(string+11,5); |
| else |
| /* _yyyy otherwise */ |
| wr(string+19,5); |
| } |
| wr(" ", 1); |
| } |
| #else |
| fputs("--- -- ----- ", stdout); |
| #endif |
| wr(name, len); |
| if (S_ISLNK(mode)) { |
| wr(" -> ", 4); |
| len = readlink(name, scratch, sizeof scratch); |
| if (len > 0) fwrite(scratch, 1, len, stdout); |
| #ifdef FEATURE_FILETYPECHAR |
| /* show type of destination */ |
| if (opts & DISP_FTYPE) { |
| if (!stat(name, info)) { |
| append = append_char(info->st_mode); |
| if (append) |
| fputc(append, stdout); |
| } |
| } |
| #endif |
| } |
| #ifdef FEATURE_FILETYPECHAR |
| else if (append) |
| wr(&append, 1); |
| #endif |
| } else { |
| static short nexttab = 0; |
| |
| /* sort out column alignment */ |
| if (column == 0) |
| ; /* nothing to do */ |
| else if (display_fmt == FMT_SINGLE) |
| newline(); |
| else { |
| if (nexttab + column_width > terminal_width |
| #ifndef FEATURE_AUTOWIDTH |
| || nexttab + len >= terminal_width |
| #endif |
| ) |
| newline(); |
| else |
| tab(nexttab); |
| } |
| /* work out where next column starts */ |
| #ifdef FEATURE_AUTOWIDTH |
| /* we know the calculated width is big enough */ |
| nexttab = column + column_width + COLUMN_GAP; |
| #else |
| /* might cover more than one fixed-width column */ |
| nexttab = column; |
| do |
| nexttab += column_width + COLUMN_GAP; |
| while (nexttab < (column + len + COLUMN_GAP)); |
| #endif |
| /* now write the data */ |
| wr(name, len); |
| column = column + len; |
| #ifdef FEATURE_FILETYPECHAR |
| if (append) |
| wr(&append, 1), column++; |
| #endif |
| } |
| } |
| |
| /** |
| ** |
| ** List the given file or directory, expanding a directory |
| ** to show its contents if required |
| ** |
| **/ |
| |
| static int list_item(const char *name) |
| { |
| struct stat info; |
| DIR *dir; |
| struct dirent *entry; |
| char fullname[MAXNAMLEN+1], *fnend; |
| |
| if (lstat(name, &info)) |
| goto listerr; |
| |
| if (!S_ISDIR(info.st_mode) || |
| (opts & DIR_NOLIST)) { |
| list_single(name, &info); |
| return 0; |
| } |
| |
| /* Otherwise, it's a directory we want to list the contents of */ |
| |
| if (opts & DISP_DIRNAME) { /* identify the directory */ |
| if (column) |
| wr("\n\n", 2), column = 0; |
| wr(name, strlen(name)); |
| wr(":\n", 2); |
| } |
| |
| dir = opendir(name); |
| if (!dir) goto listerr; |
| #ifdef FEATURE_AUTOWIDTH |
| column_width = 0; |
| while ((entry = readdir(dir)) != NULL) { |
| short w = strlen(entry->d_name); |
| if (column_width < w) |
| column_width = w; |
| } |
| #ifdef HAS_REWINDDIR |
| rewinddir(dir); |
| #else |
| closedir(dir); |
| dir = opendir(name); |
| if (!dir) goto listerr; |
| #endif |
| #endif |
| |
| /* List the contents */ |
| |
| strcpy(fullname,name); /* *** ignore '.' by itself */ |
| fnend=fullname+strlen(fullname); |
| if (fnend[-1] != '/') |
| *fnend++ = '/'; |
| |
| while ((entry = readdir(dir)) != NULL) { |
| const char *en=entry->d_name; |
| if (en[0] == '.') { |
| if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */ |
| if (!(opts & DISP_DOT)) |
| continue; |
| } |
| else if (!(opts & DISP_HIDDEN)) |
| continue; |
| } |
| /* FIXME: avoid stat if not required */ |
| strcpy(fnend, entry->d_name); |
| if (lstat(fullname, &info)) |
| goto direrr; /* (shouldn't fail) */ |
| list_single(entry->d_name, &info); |
| } |
| closedir(dir); |
| return 0; |
| |
| direrr: |
| closedir(dir); |
| listerr: |
| newline(); |
| perror(name); |
| return 1; |
| } |
| |
| const char ls_usage[] = "Usage: ls [-1a" |
| #ifdef FEATURE_TIMESTAMPS |
| "c" |
| #endif |
| "d" |
| #ifdef FEATURE_TIMESTAMPS |
| "e" |
| #endif |
| "ln" |
| #ifdef FEATURE_FILETYPECHAR |
| "p" |
| #endif |
| #ifdef FEATURE_TIMESTAMPS |
| "u" |
| #endif |
| "xAC" |
| #ifdef FEATURE_FILETYPECHAR |
| "F" |
| #endif |
| #ifdef FEATURE_RECURSIVE |
| "R" |
| #endif |
| "] [filenames...]\n"; |
| |
| extern int |
| ls_main(int argc, char * * argv) |
| { |
| int argi=1, i; |
| |
| /* process options */ |
| while (argi < argc && argv[argi][0] == '-') { |
| const char *p = &argv[argi][1]; |
| |
| if (!*p) goto print_usage_message; /* "-" by itself not allowed */ |
| if (*p == '-') { |
| if (!p[1]) { /* "--" forces end of options */ |
| argi++; |
| break; |
| } |
| /* it's a long option name - we don't support them */ |
| goto print_usage_message; |
| } |
| |
| while (*p) |
| switch (*p++) { |
| case 'l': display_fmt = FMT_LONG; break; |
| case '1': display_fmt = FMT_SINGLE; break; |
| case 'x': display_fmt = FMT_ROWS; break; |
| case 'C': display_fmt = FMT_COLUMNS; break; |
| #ifdef FEATURE_FILETYPECHAR |
| case 'p': opts |= DISP_FTYPE; break; |
| case 'F': opts |= DISP_FTYPE|DISP_EXEC; break; |
| #endif |
| case 'A': opts |= DISP_HIDDEN; break; |
| case 'a': opts |= DISP_HIDDEN|DISP_DOT; break; |
| case 'n': opts |= DISP_NUMERIC; break; |
| case 'd': opts |= DIR_NOLIST; break; |
| #ifdef FEATURE_RECURSIVE |
| case 'R': opts |= DIR_RECURSE; break; |
| #endif |
| #ifdef FEATURE_TIMESTAMPS |
| case 'u': time_fmt = TIME_ACCESS; break; |
| case 'c': time_fmt = TIME_CHANGE; break; |
| case 'e': opts |= DISP_FULLTIME; break; |
| #endif |
| default: goto print_usage_message; |
| } |
| |
| argi++; |
| } |
| |
| /* choose a display format */ |
| if (display_fmt == FMT_AUTO) |
| display_fmt = isatty(STDOUT_FILENO) ? FMT_COLUMNS : FMT_SINGLE; |
| if (argi < argc - 1) |
| opts |= DISP_DIRNAME; /* 2 or more items? label directories */ |
| #ifdef FEATURE_AUTOWIDTH |
| /* could add a -w option and/or TIOCGWINSZ call */ |
| if (terminal_width < 1) terminal_width = TERMINAL_WIDTH; |
| |
| for (i = argi; i < argc; i++) { |
| int len = strlen(argv[i]); |
| if (column_width < len) |
| column_width = len; |
| } |
| #endif |
| |
| /* process files specified, or current directory if none */ |
| i=0; |
| if (argi == argc) |
| i = list_item("."); |
| while (argi < argc) |
| i |= list_item(argv[argi++]); |
| newline(); |
| exit( i); |
| |
| print_usage_message: |
| fprintf(stderr, "Usage: %s\n", ls_usage); |
| exit( FALSE); |
| } |
| |
| #endif |