-#include "internal.h"
+/* 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>
* 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
+ * 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
* 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 */
-
-#undef OP_BUF_SIZE 1024 /* leave undefined for unbuffered output */
-
-#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 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
/************************************************************************/
-#define HAS_REWINDDIR
-
-#if 1 /* FIXME libc 6 */
-# include <linux/types.h>
+#include "internal.h"
+#if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+# include <linux/types.h>
#else
-# include <sys/types.h>
+# include <sys/types.h>
#endif
#include <sys/stat.h>
#include <stdio.h>
#include <dirent.h>
#include <errno.h>
#include <stdio.h>
-#ifdef FEATURE_USERNAME
-#include <pwd.h>
-#include <grp.h>
-#endif
-#ifdef FEATURE_TIMESTAMPS
+#ifdef BB_FEATURE_LS_TIMESTAMPS
#include <time.h>
#endif
#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
#define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
-#ifdef FEATURE_FILETYPECHAR
+#ifdef BB_FEATURE_LS_FILETYPES
#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 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;
+#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) */
+
+#ifndef MAJOR
+#define MAJOR(dev) (((dev)>>8)&0xff)
+#define MINOR(dev) ((dev)&0xff)
+#endif
+
+static unsigned char display_fmt = FMT_AUTO;
+static unsigned short opts = 0;
+static unsigned short column = 0;
+
+#ifdef BB_FEATURE_AUTOWIDTH
+static unsigned short terminal_width = 0;
+static unsigned short column_width = 0;
+static unsigned short toplevel_column_width = 0;
#else
#define terminal_width TERMINAL_WIDTH
#define column_width COLUMN_WIDTH
#endif
-#ifdef FEATURE_TIMESTAMPS
+#ifdef BB_FEATURE_LS_TIMESTAMPS
static unsigned char time_fmt = TIME_MOD;
#endif
static void writenum(long val, short minwidth)
{
- char scratch[20];
+ char scratch[128];
char *p = scratch + sizeof(scratch);
short len = 0;
short neg = (val < 0);
-
- if (neg) val = -val;
+
+ if (neg)
+ val = -val;
do
*--p = (val % 10) + '0', len++, val /= 10;
while (val);
static void tab(short col)
{
static const char spaces[] = " ";
- #define nspaces ((sizeof spaces)-1) /* null terminator! */
-
+
+#define nspaces ((sizeof spaces)-1) /* null terminator! */
+
short n = col - column;
if (n > 0) {
/* must be 1...(sizeof spaces) left */
wr(spaces, n);
}
- #undef nspaces
+#undef nspaces
}
-#ifdef FEATURE_FILETYPECHAR
-static char append_char(umode_t mode)
+#ifdef BB_FEATURE_LS_FILETYPES
+static char append_char(mode_t mode)
{
if (!(opts & DISP_FTYPE))
return '\0';
- if ((opts & DISP_EXEC) && S_ISREG(mode) && (mode & (S_IXUSR|S_IXGRP|S_IXOTH)))
- return '*';
+ if ((opts & DISP_EXEC) && S_ISREG(mode)
+ && (mode & (S_IXUSR | S_IXGRP | S_IXOTH))) return '*';
return APPCHAR(mode);
}
#endif
**
**/
-static void list_single(const char *name, struct stat *info)
+static void list_single(const char *name, struct stat *info,
+ const char *fullname)
{
- char scratch[20];
+ char scratch[PATH_MAX + 1];
short len = strlen(name);
-#ifdef FEATURE_FILETYPECHAR
+
+#ifdef BB_FEATURE_LS_FILETYPES
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];
+ mode_t mode = info->st_mode;
+
newline();
- wr(scratch, 10);
- column=10;
- writenum((long)info->st_nlink,(short)4);
+ wr(modeString(mode), 10);
+ column = 10;
+ writenum((long) info->st_nlink, (short) 5);
fputs(" ", stdout);
-#ifdef FEATURE_USERNAME
+#ifdef BB_FEATURE_LS_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);
+ memset(scratch, 0, sizeof(scratch));
+ my_getpwuid(scratch, info->st_uid);
+ if (*scratch) {
+ fputs(scratch, stdout);
+ if (strlen(scratch) <= 8)
+ wr(" ", 9 - strlen(scratch));
+ } else {
+ writenum((long) info->st_uid, (short) 8);
+ fputs(" ", stdout);
+ }
} else
#endif
- writenum((long)info->st_uid,(short)0);
- tab(24);
-#ifdef FEATURE_USERNAME
+ {
+ writenum((long) info->st_uid, (short) 8);
+ fputs(" ", stdout);
+ }
+#ifdef BB_FEATURE_LS_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);
+ memset(scratch, 0, sizeof(scratch));
+ my_getgrgid(scratch, info->st_gid);
+ if (*scratch) {
+ fputs(scratch, stdout);
+ if (strlen(scratch) <= 8)
+ wr(" ", 8 - strlen(scratch));
+ } else
+ writenum((long) info->st_gid, (short) 8);
} else
#endif
- writenum((long)info->st_gid,(short)0);
- tab(33);
+ writenum((long) info->st_gid, (short) 8);
+ //tab(26);
if (S_ISBLK(mode) || S_ISCHR(mode)) {
- writenum((long)MAJOR(info->st_rdev),(short)3);
+ 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);
+ writenum((long) MINOR(info->st_rdev), (short) 3);
+ } else
+ writenum((long) info->st_size, (short) 8);
fputs(" ", stdout);
-#ifdef FEATURE_TIMESTAMPS
+ //tab(32);
+#ifdef BB_FEATURE_LS_TIMESTAMPS
{
time_t cal;
char *string;
-
- switch(time_fmt) {
+
+ switch (time_fmt) {
case TIME_CHANGE:
- cal=info->st_ctime; break;
+ cal = info->st_ctime;
+ break;
case TIME_ACCESS:
- cal=info->st_atime; break;
+ cal = info->st_atime;
+ break;
default:
- cal=info->st_mtime; break;
+ cal = info->st_mtime;
+ break;
}
- string=ctime(&cal);
+ string = ctime(&cal);
if (opts & DISP_FULLTIME)
- wr(string,24);
+ 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)
+
+ 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);
+ wr(string + 11, 5);
else
/* _yyyy otherwise */
- wr(string+19,5);
+ wr(string + 19, 5);
}
wr(" ", 1);
}
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
+ len = readlink(fullname, scratch, sizeof scratch);
+ if (len > 0)
+ fwrite(scratch, 1, len, stdout);
+#ifdef BB_FEATURE_LS_FILETYPES
/* show type of destination */
if (opts & DISP_FTYPE) {
- if (!stat(name, info)) {
+ if (!stat(fullname, info)) {
append = append_char(info->st_mode);
if (append)
fputc(append, stdout);
}
#endif
}
-#ifdef FEATURE_FILETYPECHAR
+#ifdef BB_FEATURE_LS_FILETYPES
else if (append)
wr(&append, 1);
#endif
} else {
static short nexttab = 0;
-
+
/* sort out column alignment */
- if (column == 0)
- ; /* nothing to do */
+ 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
+#ifndef BB_FEATURE_AUTOWIDTH
+ || nexttab + len >= terminal_width
#endif
- )
+ )
newline();
else
tab(nexttab);
}
/* work out where next column starts */
-#ifdef FEATURE_AUTOWIDTH
+#ifdef BB_FEATURE_AUTOWIDTH
/* we know the calculated width is big enough */
nexttab = column + column_width + COLUMN_GAP;
#else
/* now write the data */
wr(name, len);
column = column + len;
-#ifdef FEATURE_FILETYPECHAR
+#ifdef BB_FEATURE_LS_FILETYPES
if (append)
wr(&append, 1), column++;
#endif
struct stat info;
DIR *dir;
struct dirent *entry;
- char fullname[MAXNAMLEN+1], *fnend;
-
+ char fullname[MAXNAMLEN + 1], *fnend;
+
if (lstat(name, &info))
goto listerr;
-
- if (!S_ISDIR(info.st_mode) ||
- (opts & DIR_NOLIST)) {
- list_single(name, &info);
+
+ if (!S_ISDIR(info.st_mode) || (opts & DIR_NOLIST)) {
+#ifdef BB_FEATURE_AUTOWIDTH
+ column_width = toplevel_column_width;
+#endif
+ list_single(name, &info, name);
return 0;
}
/* Otherwise, it's a directory we want to list the contents of */
- if (opts & DISP_DIRNAME) { /* identify the directory */
+ 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
+ if (!dir)
+ goto listerr;
+#ifdef BB_FEATURE_AUTOWIDTH
column_width = 0;
while ((entry = readdir(dir)) != NULL) {
short w = strlen(entry->d_name);
+
if (column_width < w)
column_width = w;
}
#else
closedir(dir);
dir = opendir(name);
- if (!dir) goto listerr;
+ if (!dir)
+ goto listerr;
#endif
#endif
/* List the contents */
-
- strcpy(fullname,name); /* *** ignore '.' by itself */
- fnend=fullname+strlen(fullname);
+
+ 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;
+ const char *en = entry->d_name;
+
if (en[0] == '.') {
- if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */
+ if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */
if (!(opts & DISP_DOT))
continue;
- }
- else if (!(opts & DISP_HIDDEN))
+ } 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);
+ goto direrr; /* (shouldn't fail) */
+ list_single(entry->d_name, &info, fullname);
}
closedir(dir);
+
+ if (opts & DISP_DIRNAME) { /* separate the directory */
+ if (column) {
+ wr("\n", 1);
+ }
+ wr("\n", 1);
+ column = 0;
+ }
+
return 0;
-direrr:
- closedir(dir);
-listerr:
+ direrr:
+ closedir(dir);
+ listerr:
newline();
- name_and_error(name);
+ perror(name);
return 1;
}
-const char ls_usage[] = "Usage: ls [-1a"
-#ifdef FEATURE_TIMESTAMPS
+static const char ls_usage[] = "ls [-1a"
+#ifdef BB_FEATURE_LS_TIMESTAMPS
"c"
#endif
"d"
-#ifdef FEATURE_TIMESTAMPS
+#ifdef BB_FEATURE_LS_TIMESTAMPS
"e"
#endif
"ln"
-#ifdef FEATURE_FILETYPECHAR
+#ifdef BB_FEATURE_LS_FILETYPES
"p"
#endif
-#ifdef FEATURE_TIMESTAMPS
+#ifdef BB_FEATURE_LS_TIMESTAMPS
"u"
#endif
"xAC"
-#ifdef FEATURE_FILETYPECHAR
+#ifdef BB_FEATURE_LS_FILETYPES
"F"
#endif
#ifdef FEATURE_RECURSIVE
#endif
"] [filenames...]\n";
-extern int
-ls_main(struct FileInfo * not_used, int argc, char * * argv)
+extern int ls_main(int argc, char **argv)
{
- int argi=1, i;
-
+ 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)
+ goto print_usage_message; /* "-" by itself not allowed */
if (*p == '-') {
- if (!p[1]) { /* "--" forces end of options */
+ 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;
+ 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 BB_FEATURE_LS_FILETYPES
+ 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;
+ 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;
+ 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;
+#ifdef BB_FEATURE_LS_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;
+ default:
+ goto print_usage_message;
}
-
+
argi++;
}
/* choose a display format */
if (display_fmt == FMT_AUTO)
- display_fmt = isatty(STDOUT_FILENO) ? FMT_COLUMNS : FMT_SINGLE;
+ display_fmt = isatty(fileno(stdout)) ? FMT_COLUMNS : FMT_SINGLE;
if (argi < argc - 1)
- opts |= DISP_DIRNAME; /* 2 or more items? label directories */
-#ifdef FEATURE_AUTOWIDTH
+ opts |= DISP_DIRNAME; /* 2 or more items? label directories */
+#ifdef BB_FEATURE_AUTOWIDTH
/* could add a -w option and/or TIOCGWINSZ call */
- if (terminal_width < 1) terminal_width = TERMINAL_WIDTH;
-
+ 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;
+
+ if (toplevel_column_width < len)
+ toplevel_column_width = len;
}
#endif
/* process files specified, or current directory if none */
- i=0;
+ i = 0;
if (argi == argc)
i = list_item(".");
while (argi < argc)
i |= list_item(argv[argi++]);
newline();
- return i;
+ exit(i);
-print_usage_message:
+ print_usage_message:
usage(ls_usage);
- return 1;
+ exit(FALSE);
}