#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1989, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#if 0
#ifndef lint
static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94";
#endif
#endif
#include <sys/cdefs.h>
__RCSID("$FreeBSD: src/bin/ls/ls.c,v 1.66 2002/09/21 01:28:36 wollman Exp $");
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <fts.h>
#include <grp.h>
#include <limits.h>
#include <locale.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef COLORLS
#include <termcap.h>
#include <signal.h>
#endif
#ifdef __APPLE__
#include <get_compat.h>
#else
#define COMPAT_MODE(a,b) (1)
#endif
#include "ls.h"
#include "extern.h"
#define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1)
static void display(FTSENT *, FTSENT *);
static u_quad_t makenines(u_quad_t);
static int mastercmp(const FTSENT **, const FTSENT **);
static void traverse(int, char **, int);
static void (*printfcn)(DISPLAY *);
static int (*sortfcn)(const FTSENT *, const FTSENT *);
long blocksize;
int termwidth = 80;
int f_accesstime;
int f_birthtime;
int f_flags;
int f_humanval;
int f_inode;
static int f_kblocks;
static int f_listdir;
static int f_listdot;
int f_longform;
int f_nonprint;
static int f_nosort;
int f_notabs;
int f_numericonly;
int f_octal;
int f_octal_escape;
static int f_recursive;
static int f_reversesort;
int f_sectime;
static int f_singlecol;
int f_size;
int f_slash;
int f_sortacross;
int f_statustime;
int f_stream;
static int f_timesort;
static int f_sizesort;
int f_type;
static int f_whiteout;
int f_acl;
int f_xattr;
int f_group;
int f_owner;
#ifdef COLORLS
int f_color;
char *ansi_bgcol;
char *ansi_fgcol;
char *ansi_coloff;
char *attrs_off;
char *enter_bold;
#endif
static int rval;
int
main(int argc, char *argv[])
{
static char dot[] = ".", *dotav[] = {dot, NULL};
struct winsize win;
int ch, fts_options, notused;
char *p;
#ifdef COLORLS
char termcapbuf[1024];
char tcapbuf[512];
char *bp = tcapbuf;
#endif
if (argc < 1)
usage();
(void)setlocale(LC_ALL, "");
if (isatty(STDOUT_FILENO)) {
termwidth = 80;
if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
termwidth = atoi(p);
else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
win.ws_col > 0)
termwidth = win.ws_col;
f_nonprint = 1;
} else {
f_singlecol = 1;
p = getenv("COLUMNS");
if (p)
termwidth = atoi(p);
}
if (!getuid())
f_listdot = 1;
fts_options = FTS_PHYSICAL;
while ((ch = getopt(argc, argv, "1@ABCFGHLOPRSTUWabcdefghiklmnopqrstuvwx"))
!= -1) {
switch (ch) {
case '1':
f_singlecol = 1;
f_longform = 0;
f_stream = 0;
break;
case 'B':
f_nonprint = 0;
f_octal = 1;
f_octal_escape = 0;
break;
case 'C':
f_sortacross = f_longform = f_singlecol = 0;
break;
case 'l':
f_longform = 1;
f_singlecol = 0;
f_stream = 0;
break;
case 'x':
f_sortacross = 1;
f_longform = 0;
f_singlecol = 0;
break;
case 'c':
f_statustime = 1;
f_accesstime = f_birthtime = 0;
break;
case 'u':
f_accesstime = 1;
f_statustime = f_birthtime = 0;
break;
case 'U':
f_birthtime = 1;
f_statustime = f_accesstime = 0;
break;
case 'F':
f_type = 1;
f_slash = 0;
break;
case 'H':
if (COMPAT_MODE("bin/ls", "Unix2003")) {
fts_options &= ~FTS_LOGICAL;
fts_options |= FTS_PHYSICAL;
fts_options |= FTS_COMFOLLOWDIR;
} else
fts_options |= FTS_COMFOLLOW;
break;
case 'G':
setenv("CLICOLOR", "", 1);
break;
case 'L':
fts_options &= ~FTS_PHYSICAL;
fts_options |= FTS_LOGICAL;
if (COMPAT_MODE("bin/ls", "Unix2003")) {
fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
}
break;
case 'P':
fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
fts_options &= ~FTS_LOGICAL;
fts_options |= FTS_PHYSICAL;
break;
case 'R':
f_recursive = 1;
break;
case 'a':
fts_options |= FTS_SEEDOT;
case 'A':
f_listdot = 1;
break;
case 'd':
f_listdir = 1;
f_recursive = 0;
break;
case 'f':
f_nosort = 1;
if (COMPAT_MODE("bin/ls", "Unix2003")) {
fts_options |= FTS_SEEDOT;
f_listdot = 1;
}
break;
case 'g':
if (COMPAT_MODE("bin/ls", "Unix2003")) {
f_group = 1;
f_longform = 1;
f_singlecol = 0;
f_stream = 0;
}
break;
case 'h':
f_humanval = 1;
break;
case 'i':
f_inode = 1;
break;
case 'k':
f_kblocks = 1;
break;
case 'm':
f_stream = 1;
f_singlecol = 0;
f_longform = 0;
break;
case 'n':
f_numericonly = 1;
if (COMPAT_MODE("bin/ls", "Unix2003")) {
f_longform = 1;
f_singlecol = 0;
f_stream = 0;
}
break;
case 'o':
if (COMPAT_MODE("bin/ls", "Unix2003")) {
f_owner = 1;
f_longform = 1;
f_singlecol = 0;
f_stream = 0;
} else {
f_flags = 1;
}
break;
case 'p':
f_slash = 1;
f_type = 1;
break;
case 'q':
f_nonprint = 1;
f_octal = 0;
f_octal_escape = 0;
break;
case 'r':
f_reversesort = 1;
break;
case 'S':
f_sizesort = 1;
break;
case 's':
f_size = 1;
break;
case 'T':
f_sectime = 1;
break;
case 't':
f_timesort = 1;
break;
case 'W':
f_whiteout = 1;
break;
case 'v':
f_nonprint = 0;
break;
case 'b':
f_nonprint = 0;
f_octal = 0;
f_octal_escape = 1;
break;
case 'w':
f_nonprint = 0;
f_octal = 0;
f_octal_escape = 0;
break;
case 'e':
f_acl = 1;
break;
case '@':
f_xattr = 1;
break;
case 'O':
f_flags = 1;
break;
default:
case '?':
usage();
}
}
argc -= optind;
argv += optind;
if (getenv("CLICOLOR") &&
(isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
#ifdef COLORLS
if (tgetent(termcapbuf, getenv("TERM")) == 1) {
ansi_fgcol = tgetstr("AF", &bp);
ansi_bgcol = tgetstr("AB", &bp);
attrs_off = tgetstr("me", &bp);
enter_bold = tgetstr("md", &bp);
ansi_coloff = tgetstr("op", &bp);
if (!ansi_coloff)
ansi_coloff = tgetstr("oc", &bp);
if (ansi_fgcol && ansi_bgcol && ansi_coloff)
f_color = 1;
}
#else
(void)fprintf(stderr, "Color support not compiled in.\n");
#endif
#ifdef COLORLS
if (f_color) {
f_notabs = 1;
(void)signal(SIGINT, colorquit);
(void)signal(SIGQUIT, colorquit);
parsecolors(getenv("LSCOLORS"));
}
#endif
if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type && !f_sizesort
#ifdef COLORLS
&& !f_color
#endif
)
fts_options |= FTS_NOSTAT;
if (!f_longform && !f_listdir && !f_type && !f_inode)
fts_options |= FTS_COMFOLLOW;
#ifdef FTS_WHITEOUT
if (f_whiteout)
fts_options |= FTS_WHITEOUT;
#endif
if (f_longform || f_size) {
if (f_kblocks)
blocksize = 2;
else {
(void)getbsize(¬used, &blocksize);
blocksize /= 512;
}
}
if (f_reversesort) {
if (f_sizesort)
sortfcn = revsizecmp;
else if (!f_timesort)
sortfcn = revnamecmp;
else if (f_accesstime)
sortfcn = revacccmp;
else if (f_statustime)
sortfcn = revstatcmp;
else if (f_birthtime)
sortfcn = revbirthcmp;
else
sortfcn = revmodcmp;
} else {
if (f_sizesort)
sortfcn = sizecmp;
else if (!f_timesort)
sortfcn = namecmp;
else if (f_accesstime)
sortfcn = acccmp;
else if (f_statustime)
sortfcn = statcmp;
else if (f_birthtime)
sortfcn = birthcmp;
else
sortfcn = modcmp;
}
if (f_singlecol)
printfcn = printscol;
else if (f_longform)
printfcn = printlong;
else if (f_stream)
printfcn = printstream;
else
printfcn = printcol;
if (argc)
traverse(argc, argv, fts_options);
else
traverse(1, dotav, fts_options);
exit(rval);
}
static int output;
static void
traverse(int argc, char *argv[], int options)
{
FTS *ftsp;
FTSENT *p, *chp;
int ch_options, error;
if ((ftsp =
fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
err(1, "fts_open");
display(NULL, fts_children(ftsp, 0));
if (f_listdir) {
fts_close(ftsp);
return;
}
ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
while ((p = fts_read(ftsp)) != NULL)
switch (p->fts_info) {
case FTS_DC:
warnx("%s: directory causes a cycle", p->fts_name);
if (COMPAT_MODE("bin/ls", "Unix2003")) {
rval = 1;
}
break;
case FTS_DNR:
case FTS_ERR:
warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
rval = 1;
break;
case FTS_D:
if (p->fts_level != FTS_ROOTLEVEL &&
p->fts_name[0] == '.' && !f_listdot)
break;
if (output)
(void)printf("\n%s:\n", p->fts_path);
else if (argc > 1) {
(void)printf("%s:\n", p->fts_path);
output = 1;
}
chp = fts_children(ftsp, ch_options);
if (COMPAT_MODE("bin/ls", "Unix2003") && ((options & FTS_LOGICAL)!=0)) {
FTSENT *curr;
for (curr = chp; curr; curr = curr->fts_link) {
if (curr->fts_info == FTS_SLNONE)
curr->fts_number = NO_PRINT;
}
}
display(p, chp);
if (!f_recursive && chp != NULL)
(void)fts_set(ftsp, p, FTS_SKIP);
break;
case FTS_SLNONE:
if (COMPAT_MODE("bin/ls", "Unix2003")) {
if ((options & FTS_LOGICAL)!=0) {
warnx("%s: %s", p->fts_name, strerror(p->fts_errno ?: ENOENT));
rval = 1;
}
}
break;
default:
break;
}
error = errno;
fts_close(ftsp);
errno = error;
if (errno)
err(1, "fts_read");
}
static void
display(FTSENT *p, FTSENT *list)
{
struct stat *sp;
DISPLAY d;
FTSENT *cur;
NAMES *np;
off_t maxsize;
u_int64_t btotal, maxblock;
u_long lattrlen, maxlen, maxnlink, maxlattr;
ino_t maxinode;
int bcfile, maxflags;
gid_t maxgroup;
uid_t maxuser;
size_t flen, ulen, glen;
char *initmax;
int entries, needstats;
const char *user, *group;
char *flags, *lattr = NULL;
char buf[STRBUF_SIZEOF(u_quad_t) + 1];
char ngroup[STRBUF_SIZEOF(uid_t) + 1];
char nuser[STRBUF_SIZEOF(gid_t) + 1];
if (list == NULL)
return;
needstats = f_inode || f_longform || f_size;
flen = 0;
btotal = 0;
initmax = getenv("LS_COLWIDTHS");
maxlattr = maxblock = maxinode = maxlen = maxnlink =
maxuser = maxgroup = maxflags = maxsize = 0;
if (initmax != NULL && *initmax != '\0') {
char *initmax2, *jinitmax;
int ninitmax;
jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2);
if (jinitmax == NULL)
err(1, "malloc");
if (*initmax == ':')
strcpy(initmax2, "0:"), initmax2 += 2;
else
*initmax2++ = *initmax, *initmax2 = '\0';
for (initmax++; *initmax != '\0'; initmax++) {
if (initmax[-1] == ':' && initmax[0] == ':') {
*initmax2++ = '0';
*initmax2++ = initmax[0];
initmax2[1] = '\0';
} else {
*initmax2++ = initmax[0];
initmax2[1] = '\0';
}
}
if (initmax2[-1] == ':')
strcpy(initmax2, "0");
ninitmax = sscanf(jinitmax,
#if _DARWIN_FEATURE_64_BIT_INODE
" %llu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
#else
" %lu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
#endif
&maxinode, &maxblock, &maxnlink, &maxuser,
&maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr);
f_notabs = 1;
switch (ninitmax) {
case 0:
maxinode = 0;
case 1:
maxblock = 0;
case 2:
maxnlink = 0;
case 3:
maxuser = 0;
case 4:
maxgroup = 0;
case 5:
maxflags = 0;
case 6:
maxsize = 0;
case 7:
maxlen = 0;
case 8:
maxlattr = 0;
#ifdef COLORLS
if (!f_color)
#endif
f_notabs = 0;
default:
break;
}
maxinode = makenines(maxinode);
maxblock = makenines(maxblock);
maxnlink = makenines(maxnlink);
maxsize = makenines(maxsize);
}
bcfile = 0;
flags = NULL;
for (cur = list, entries = 0; cur; cur = cur->fts_link) {
if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
warnx("%s: %s",
cur->fts_name, strerror(cur->fts_errno));
cur->fts_number = NO_PRINT;
rval = 1;
continue;
}
if (p == NULL) {
if (cur->fts_info == FTS_D && !f_listdir) {
cur->fts_number = NO_PRINT;
continue;
}
} else {
if (cur->fts_name[0] == '.' && !f_listdot) {
cur->fts_number = NO_PRINT;
continue;
}
}
if (cur->fts_namelen > maxlen)
maxlen = cur->fts_namelen;
if (f_octal || f_octal_escape) {
u_long t = len_octal(cur->fts_name, cur->fts_namelen);
if (t > maxlen)
maxlen = t;
}
if (needstats) {
sp = cur->fts_statp;
if (sp->st_blocks > maxblock)
maxblock = sp->st_blocks;
if (sp->st_ino > maxinode)
maxinode = sp->st_ino;
if (sp->st_nlink > maxnlink)
maxnlink = sp->st_nlink;
if (sp->st_size > maxsize)
maxsize = sp->st_size;
btotal += sp->st_blocks;
if (f_longform) {
if (f_numericonly) {
(void)snprintf(nuser, sizeof(nuser),
"%u", sp->st_uid);
(void)snprintf(ngroup, sizeof(ngroup),
"%u", sp->st_gid);
user = nuser;
group = ngroup;
} else {
user = user_from_uid(sp->st_uid, 0);
group = group_from_gid(sp->st_gid, 0);
}
if ((ulen = strlen(user)) > maxuser)
maxuser = ulen;
if ((glen = strlen(group)) > maxgroup)
maxgroup = glen;
if (f_flags) {
flags = fflagstostr(sp->st_flags);
if (flags != NULL && *flags == '\0') {
free(flags);
flags = strdup("-");
}
if (flags == NULL)
err(1, "fflagstostr");
flen = strlen(flags);
if (flen > (size_t)maxflags)
maxflags = flen;
} else
flen = 0;
lattr = NULL;
lattrlen = 0;
if ((np = malloc(sizeof(NAMES) + lattrlen +
ulen + glen + flen + 4)) == NULL)
err(1, "malloc");
np->user = &np->data[0];
(void)strcpy(np->user, user);
np->group = &np->data[ulen + 1];
(void)strcpy(np->group, group);
if (S_ISCHR(sp->st_mode) ||
S_ISBLK(sp->st_mode))
bcfile = 1;
if (f_flags) {
np->flags = &np->data[ulen + glen + 2];
(void)strcpy(np->flags, flags);
free(flags);
}
cur->fts_pointer = np;
}
}
++entries;
}
if (!entries)
return;
d.list = list;
d.entries = entries;
d.maxlen = maxlen;
if (needstats) {
d.bcfile = bcfile;
d.btotal = btotal;
(void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxblock);
d.s_block = strlen(buf);
d.s_flags = maxflags;
d.s_lattr = maxlattr;
d.s_group = maxgroup;
#if _DARWIN_FEATURE_64_BIT_INODE
(void)snprintf(buf, sizeof(buf), "%llu", maxinode);
#else
(void)snprintf(buf, sizeof(buf), "%lu", maxinode);
#endif
d.s_inode = strlen(buf);
(void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
d.s_nlink = strlen(buf);
(void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxsize);
d.s_size = strlen(buf);
d.s_user = maxuser;
}
printfcn(&d);
output = 1;
if (f_longform)
for (cur = list; cur; cur = cur->fts_link)
free(cur->fts_pointer);
}
static int
mastercmp(const FTSENT **a, const FTSENT **b)
{
int a_info, b_info;
a_info = (*a)->fts_info;
if (a_info == FTS_ERR)
return (0);
b_info = (*b)->fts_info;
if (b_info == FTS_ERR)
return (0);
if (a_info == FTS_NS || b_info == FTS_NS)
return (namecmp(*a, *b));
if (a_info != b_info &&
(*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
if (a_info == FTS_D)
return (1);
if (b_info == FTS_D)
return (-1);
}
return (sortfcn(*a, *b));
}
static u_quad_t
makenines(u_quad_t n)
{
u_long i;
u_quad_t reg;
reg = 1;
for (i = 0; i < n; i++)
reg *= 10;
reg--;
return reg;
}