[unix-history] / usr / src / bin / ls / ls.c

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Michael Fischbein.
 *
%sccs.include.redist.c%
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)ls.c	5.37 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <dirent.h>
#include <strings.h>
#include <errno.h>
#include <stdio.h>
#include "ls.h"

int (*sortfcn)(), (*printfcn)();
int lstat(), strlen();
char *emalloc();

int termwidth = 80;		/* default terminal width */

/* flags */
int f_accesstime;		/* use time of last access */
int f_column;			/* columnated format */
int f_group;			/* show group ownership of a file */
int f_ignorelink;		/* indirect through symbolic link operands */
int f_inode;			/* print inode */
int f_kblocks;			/* print size in kilobytes */
int f_listalldot;		/* list . and .. as well */
int f_listdir;			/* list actual directory, not contents */
int f_listdot;			/* list files beginning with . */
int f_longform;			/* long listing format */
int f_needstat;			/* if need to stat files */
int f_newline;			/* if precede with newline */
int f_nonprint;			/* show unprintables as ? */
int f_nosort;			/* don't sort output */
int f_recursive;		/* ls subdirectories also */
int f_reversesort;		/* reverse whatever sort is used */
int f_singlecol;		/* use single column output */
int f_size;			/* list size in short listing */
int f_statustime;		/* use time of last mode change */
int f_dirname;			/* if precede with directory name */
int f_timesort;			/* sort by time vice name */
int f_total;			/* if precede with "total" line */
int f_type;			/* add type character for non-regular files */

main(argc, argv)
	int argc;
	char **argv;
{
	extern int optind, stat();
	struct winsize win;
	int ch;
	char *p, *getenv();
	int acccmp(), bcopy(), modcmp(), namecmp(), prcopy(), printcol();
	int printlong(), printscol(), revacccmp(), revmodcmp(), revnamecmp();
	int revstatcmp(), statcmp();

	/* terminal defaults to -Cq, non-terminal defaults to -1 */
	if (isatty(1)) {
		f_nonprint = 1;
		if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
			if (p = getenv("COLUMNS"))
				termwidth = atoi(p);
		}
		else
			termwidth = win.ws_col;
		f_column = 1;
	} else
		f_singlecol = 1;

	/* root is -A automatically */
	if (!getuid())
		f_listdot = 1;

	while ((ch = getopt(argc, argv, "1ACFLRacdfgiklqrstu")) != EOF) {
		switch (ch) {
		/*
		 * -1, -C and -l all override each other
		 * so shell aliasing works right
		 */
		case '1':
			f_singlecol = 1;
			f_column = f_longform = 0;
			break;
		case 'C':
			f_column = 1;
			f_longform = f_singlecol = 0;
			break;
		case 'l':
			f_longform = 1;
			f_column = f_singlecol = 0;
			break;
		/* -c and -u override each other */
		case 'c':
			f_statustime = 1;
			f_accesstime = 0;
			break;
		case 'u':
			f_accesstime = 1;
			f_statustime = 0;
			break;
		case 'F':
			f_type = 1;
			break;
		case 'L':
			f_ignorelink = 1;
			break;
		case 'R':
			f_recursive = 1;
			break;
		case 'a':
			f_listalldot = 1;
			/* FALLTHROUGH */
		case 'A':
			f_listdot = 1;
			break;
		case 'S':
			Sflg++; /* fall into... */
		case 'd':
			f_listdir = 1;
			break;
		case 'f':
			f_nosort = 1;
			break;
		case 'g':
			f_group = 1;
			break;
		case 'i':
			f_inode = 1;
			break;
		case 'k':
			f_kblocks = 1;
			break;
		case 'q':
			f_nonprint = 1;
			break;
		case 'r':
			f_reversesort = 1;
			break;
		case 's':
			f_size = 1;
			break;
		case 't':
			f_timesort = 1;
			break;
		default:
		case '?':
			usage();
		}
	}
	argc -= optind;
	argv += optind;

	/* -d turns off -R */
	if (f_listdir)
		f_recursive = 0;

	/* if need to stat files */
	f_needstat = f_longform || f_recursive || f_timesort ||
	    f_size || f_type;

	/* select a sort function */
	if (f_reversesort) {
		if (!f_timesort)
			sortfcn = revnamecmp;
		else if (f_accesstime)
			sortfcn = revacccmp;
		else if (f_statustime)
			sortfcn = revstatcmp;
		else /* use modification time */
			sortfcn = revmodcmp;
	} else {
		if (!f_timesort)
			sortfcn = namecmp;
		else if (f_accesstime)
			sortfcn = acccmp;
		else if (f_statustime)
			sortfcn = statcmp;
		else /* use modification time */
			sortfcn = modcmp;
	}

	/* select a print function */
	if (f_singlecol)
		printfcn = printscol;
	else if (f_longform)
		printfcn = printlong;
	else
		printfcn = printcol;

	if (!argc) {
		argc = 1;
		argv[0] = ".";
		argv[1] = NULL;
	}
	doargs(argc, argv);
	exit(0);
}

static char path[MAXPATHLEN + 1];
static char *endofpath = path;

doargs(argc, argv)
	int argc;
	char **argv;
{
	register LS *dstatp, *rstatp;
	register int cnt, dircnt, maxlen, regcnt;
	LS *dstats, *rstats;
	struct stat sb;
	int (*statfcn)(), stat(), lstat();
	char top[MAXPATHLEN + 1];
	u_long blocks;

	/*
	 * walk through the operands, building separate arrays of LS
	 * structures for directory and non-directory files.
	 */
	dstats = rstats = NULL;
	statfcn = (f_longform || f_listdir) && !f_ignorelink ? lstat : stat;
	for (dircnt = regcnt = 0; *argv; ++argv) {
		if (statfcn(*argv, &sb)) {
			if (statfcn != stat || lstat(*argv, &sb)) {
				(void)fprintf(stderr, "ls: %s: %s\n", *argv,
				    strerror(errno));
				if (errno == ENOENT)
					continue;
				exit(1);
			}
		}
		if (S_ISDIR(sb.st_mode) && !f_listdir) {
			if (!dstats)
				dstatp = dstats = (LS *)emalloc((u_int)argc *
				    (sizeof(LS)));
			dstatp->name = *argv;
			dstatp->lstat = sb;
			++dstatp;
			++dircnt;
		}
		else {
			if (!rstats) {
				rstatp = rstats = (LS *)emalloc((u_int)argc *
				    (sizeof(LS)));
				blocks = 0;
				maxlen = -1;
			}
			rstatp->name = *argv;
			rstatp->lstat = sb;

			/* save name length for -C format */
			rstatp->len = strlen(*argv);

			if (f_nonprint)
				prcopy(*argv, *argv, rstatp->len);

			/* calculate number of blocks if -l/-s formats */
			if (f_longform || f_size)
				blocks += sb.st_blocks;

			/* save max length if -C format */
			if (f_column && maxlen < rstatp->len)
				maxlen = rstatp->len;

			++rstatp;
			++regcnt;
		}
	}
	/* display regular files */
	if (regcnt) {
		rstats[0].lstat.st_btotal = blocks;
		rstats[0].lstat.st_maxlen = maxlen;
		displaydir(rstats, regcnt);
		f_newline = f_dirname = 1;
	}
	/* display directories */
	if (dircnt) {
		register char *p;

		f_total = 1;
		if (dircnt > 1) {
			(void)getwd(top);
			qsort((char *)dstats, dircnt, sizeof(LS), sortfcn);
			f_dirname = 1;
		}
		for (cnt = 0; cnt < dircnt; ++dstats) {
			for (endofpath = path, p = dstats->name;
			    *endofpath = *p++; ++endofpath);
			subdir(dstats);
			f_newline = 1;
			if (++cnt < dircnt && chdir(top)) {
				(void)fprintf(stderr, "ls: %s: %s\n",
				    top, strerror(errno));
				exit(1);
			}
		}
	}
}

displaydir(stats, num)
	LS *stats;
	register int num;
{
	register char *p, *savedpath;
	LS *lp;

	if (num > 1 && !f_nosort) {
		u_long save1, save2;

		save1 = stats[0].lstat.st_btotal;
		save2 = stats[0].lstat.st_maxlen;
		qsort((char *)stats, num, sizeof(LS), sortfcn);
		stats[0].lstat.st_btotal = save1;
		stats[0].lstat.st_maxlen = save2;
	}

	printfcn(stats, num);

	if (f_recursive) {
		savedpath = endofpath;
		for (lp = stats; num--; ++lp) {
			if (!S_ISDIR(lp->lstat.st_mode))
				continue;
			p = lp->name;
			if (p[0] == '.' && (!p[1] || p[1] == '.' && !p[2]))
				continue;
			if (endofpath != path && endofpath[-1] != '/')
				*endofpath++ = '/';
			for (; *endofpath = *p++; ++endofpath);
			f_newline = f_dirname = f_total = 1;
			subdir(lp);
			*(endofpath = savedpath) = '\0';
		}
	}
}

subdir(lp)
	LS *lp;
{
	LS *stats;
	int num;
	char *names;

	if (f_newline)
		(void)putchar('\n');
	if (f_dirname)
		(void)printf("%s:\n", path);

	if (chdir(lp->name)) {
		(void)fprintf(stderr, "ls: %s: %s\n", lp->name,
		     strerror(errno));
		return;
	}
	if (num = tabdir(lp, &stats, &names)) {
		displaydir(stats, num);
		(void)free((char *)stats);
		(void)free((char *)names);
	}
	if (chdir("..")) {
		(void)fprintf(stderr, "ls: ..: %s\n", strerror(errno));
		exit(1);
	}
}

tabdir(lp, s_stats, s_names)
	LS *lp, **s_stats;
	char **s_names;
{
	register DIR *dirp;
	register int cnt, maxentry, maxlen;
	register char *p, *names;
	struct dirent *dp;
	u_long blocks;
	LS *stats;

	if (!(dirp = opendir("."))) {
		(void)fprintf(stderr, "ls: %s: %s\n", lp->name,
		    strerror(errno));
		return(0);
	}
	blocks = maxentry = maxlen = 0;
	stats = NULL;
	for (cnt = 0; dp = readdir(dirp);) {
		/* this does -A and -a */
		p = dp->d_name;
		if (p[0] == '.') {
			if (!f_listdot)
				continue;
			if (!f_listalldot && (!p[1] || p[1] == '.' && !p[2]))
				continue;
		}
		if (cnt == maxentry) {
			if (!maxentry)
				*s_names = names =
				    emalloc((u_int)lp->lstat.st_size);
#define	DEFNUM	256
			maxentry += DEFNUM;
			if (!(*s_stats = stats = (LS *)realloc((char *)stats,
			    (u_int)maxentry * sizeof(LS))))
				nomem();
		}
		if (f_needstat && lstat(dp->d_name, &stats[cnt].lstat)) {
			(void)fprintf(stderr, "ls: %s: %s\n",
			    dp->d_name, strerror(errno));
			if (errno == ENOENT)
				continue;
			exit(1);
		}
		stats[cnt].name = names;

		if (f_nonprint)
			prcopy(dp->d_name, names, (int)dp->d_namlen);
		else
			bcopy(dp->d_name, names, (int)dp->d_namlen);
		names += dp->d_namlen;
		*names++ = '\0';

		/*
		 * get the inode from the directory, so the -f flag
		 * works right.
		 */
		stats[cnt].lstat.st_ino = dp->d_ino;

		/* save name length for -C format */
		stats[cnt].len = dp->d_namlen;

		/* calculate number of blocks if -l/-s formats */
		if (f_longform || f_size)
			blocks += stats[cnt].lstat.st_blocks;

		/* save max length if -C format */
		if (f_column && maxlen < (int)dp->d_namlen)
			maxlen = dp->d_namlen;
		++cnt;
	}
	(void)closedir(dirp);

	if (cnt) {
		stats[0].lstat.st_btotal = blocks;
		stats[0].lstat.st_maxlen = maxlen;
	} else if (stats) {
		(void)free((char *)stats);
		(void)free((char *)names);
	}
	return(cnt);
}
Commit	Line	Data
bcf1365c	1	/*
9ffe97fe KB	2	* Copyright (c) 1989 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Michael Fischbein.
	7	*
1515f3a2	8	%sccs.include.redist.c%
bcf1365c	9	*/
9ffe97fe KB	10
	11	#ifndef lint
	12	char copyright[] =
	13	"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
	14	All rights reserved.\n";
	15	#endif /* not lint */
	16
	17	#ifndef lint
1515f3a2	18	static char sccsid[] = "@(#)ls.c 5.37 (Berkeley) %G%";
9ffe97fe KB	19	#endif /* not lint */
9ffe97fe KB	20
2fd18a0a	21	#include <sys/param.h>
9ffe97fe	22	#include <sys/stat.h>
4847d483	23	#include <sys/ioctl.h>
2fd18a0a	24	#include <dirent.h>
9ffe97fe	25	#include <strings.h>
9ffe97fe KB	26	#include <errno.h>
9ffe97fe KB	27	#include <stdio.h>
b3f77fd1	28	#include "ls.h"
2fd18a0a	29
4e9923b0	30	int (sortfcn)(), (printfcn)();
219ae3c3	31	int lstat(), strlen();
b3f77fd1	32	char *emalloc();
bcf1365c	33
fb29be9b KB	34	int termwidth = 80; /* default terminal width */
fb29be9b KB	35
9ffe97fe	36	/* flags */
9ffe97fe	37	int f_accesstime; /* use time of last access */
4845c19f	38	int f_column; /* columnated format */
9ffe97fe	39	int f_group; /* show group ownership of a file */
38eeee6d	40	int f_ignorelink; /* indirect through symbolic link operands */
9ffe97fe	41	int f_inode; /* print inode */
a657fc85	42	int f_kblocks; /* print size in kilobytes */
38eeee6d KB	43	int f_listalldot; /* list . and .. as well */
	44	int f_listdir; /* list actual directory, not contents */
	45	int f_listdot; /* list files beginning with . */
9ffe97fe	46	int f_longform; /* long listing format */
4dfe4db2 KB	47	int f_needstat; /* if need to stat files */
4dfe4db2 KB	48	int f_newline; /* if precede with newline */
9ffe97fe	49	int f_nonprint; /* show unprintables as ? */
9d5fbfa8	50	int f_nosort; /* don't sort output */
9ffe97fe	51	int f_recursive; /* ls subdirectories also */
38eeee6d KB	52	int f_reversesort; /* reverse whatever sort is used */
38eeee6d KB	53	int f_singlecol; /* use single column output */
9ffe97fe	54	int f_size; /* list size in short listing */
38eeee6d	55	int f_statustime; /* use time of last mode change */
4dfe4db2	56	int f_dirname; /* if precede with directory name */
9ffe97fe	57	int f_timesort; /* sort by time vice name */
4dfe4db2	58	int f_total; /* if precede with "total" line */
38eeee6d	59	int f_type; /* add type character for non-regular files */
2fd18a0a	60
9ffe97fe KB	61	main(argc, argv)
	62	int argc;
	63	char **argv;
547b0031	64	{
9ffe97fe	65	extern int optind, stat();
4847d483	66	struct winsize win;
9ffe97fe	67	int ch;
4847d483	68	char p, getenv();
4845c19f KB	69	int acccmp(), bcopy(), modcmp(), namecmp(), prcopy(), printcol();
	70	int printlong(), printscol(), revacccmp(), revmodcmp(), revnamecmp();
	71	int revstatcmp(), statcmp();
2fd18a0a	72
4845c19f	73	/* terminal defaults to -Cq, non-terminal defaults to -1 */
547b0031	74	if (isatty(1)) {
9ffe97fe	75	f_nonprint = 1;
fb29be9b KB	76	if (ioctl(1, TIOCGWINSZ, &win) == -1 \|\| !win.ws_col) {
	77	if (p = getenv("COLUMNS"))
	78	termwidth = atoi(p);
	79	}
4847d483 KB	80	else
4847d483 KB	81	termwidth = win.ws_col;
4845c19f	82	f_column = 1;
9ffe97fe KB	83	} else
9ffe97fe KB	84	f_singlecol = 1;
2fd18a0a	85
38eeee6d	86	/* root is -A automatically */
9ffe97fe	87	if (!getuid())
b3f77fd1	88	f_listdot = 1;
9ffe97fe	89
9d5fbfa8	90	while ((ch = getopt(argc, argv, "1ACFLRacdfgiklqrstu")) != EOF) {
9ffe97fe	91	switch (ch) {
38eeee6d KB	92	/*
	93	* -1, -C and -l all override each other
	94	* so shell aliasing works right
	95	*/
9ffe97fe KB	96	case '1':
9ffe97fe KB	97	f_singlecol = 1;
4845c19f	98	f_column = f_longform = 0;
2fd18a0a	99	break;
9ffe97fe	100	case 'C':
4845c19f	101	f_column = 1;
38eeee6d KB	102	f_longform = f_singlecol = 0;
	103	break;
	104	case 'l':
	105	f_longform = 1;
4845c19f	106	f_column = f_singlecol = 0;
9ffe97fe	107	break;
38eeee6d KB	108	/* -c and -u override each other */
	109	case 'c':
	110	f_statustime = 1;
	111	f_accesstime = 0;
	112	break;
	113	case 'u':
	114	f_accesstime = 1;
	115	f_statustime = 0;
	116	break;
9ffe97fe KB	117	case 'F':
	118	f_type = 1;
	119	break;
	120	case 'L':
38eeee6d	121	f_ignorelink = 1;
9ffe97fe KB	122	break;
	123	case 'R':
	124	f_recursive = 1;
9ffe97fe KB	125	break;
9ffe97fe KB	126	case 'a':
b3f77fd1	127	f_listalldot = 1;
9ffe97fe	128	/* FALLTHROUGH */
2fd18a0a	129	case 'A':
b3f77fd1	130	f_listdot = 1;
2fd18a0a	131	break;
1c52c7b1 JB	132	case 'S':
1c52c7b1 JB	133	Sflg++; /* fall into... */
547b0031	134	case 'd':
9ffe97fe	135	f_listdir = 1;
2fd18a0a	136	break;
9d5fbfa8 KB	137	case 'f':
	138	f_nosort = 1;
	139	break;
547b0031	140	case 'g':
9ffe97fe	141	f_group = 1;
2fd18a0a	142	break;
ec0c22c1	143	case 'i':
9ffe97fe	144	f_inode = 1;
2fd18a0a	145	break;
a657fc85 KB	146	case 'k':
	147	f_kblocks = 1;
	148	break;
ec0c22c1	149	case 'q':
9ffe97fe	150	f_nonprint = 1;
2fd18a0a	151	break;
547b0031	152	case 'r':
9ffe97fe	153	f_reversesort = 1;
2fd18a0a	154	break;
ec0c22c1	155	case 's':
9ffe97fe	156	f_size = 1;
2fd18a0a	157	break;
547b0031	158	case 't':
9ffe97fe	159	f_timesort = 1;
2fd18a0a	160	break;
ec0c22c1	161	default:
2fd18a0a	162	case '?':
9ffe97fe	163	usage();
2955376b	164	}
9ffe97fe	165	}
b3f77fd1 KB	166	argc -= optind;
b3f77fd1 KB	167	argv += optind;
9ffe97fe	168
b3f77fd1 KB	169	/* -d turns off -R */
	170	if (f_listdir)
	171	f_recursive = 0;
	172
95fa2ad8	173	/* if need to stat files */
4dfe4db2 KB	174	f_needstat = f_longform \|\| f_recursive \|\| f_timesort \|\|
4dfe4db2 KB	175	f_size \|\| f_type;
b3f77fd1	176
9ffe97fe KB	177	/* select a sort function */
	178	if (f_reversesort) {
	179	if (!f_timesort)
	180	sortfcn = revnamecmp;
	181	else if (f_accesstime)
	182	sortfcn = revacccmp;
9ffe97fe KB	183	else if (f_statustime)
9ffe97fe KB	184	sortfcn = revstatcmp;
38eeee6d KB	185	else /* use modification time */
38eeee6d KB	186	sortfcn = revmodcmp;
2fd18a0a	187	} else {
9ffe97fe KB	188	if (!f_timesort)
	189	sortfcn = namecmp;
	190	else if (f_accesstime)
	191	sortfcn = acccmp;
9ffe97fe KB	192	else if (f_statustime)
9ffe97fe KB	193	sortfcn = statcmp;
38eeee6d KB	194	else /* use modification time */
38eeee6d KB	195	sortfcn = modcmp;
9ffe97fe KB	196	}
9ffe97fe KB	197
4847d483 KB	198	/* select a print function */
	199	if (f_singlecol)
	200	printfcn = printscol;
	201	else if (f_longform)
	202	printfcn = printlong;
b3f77fd1	203	else
4e9923b0	204	printfcn = printcol;
9ffe97fe	205
4e9923b0 KB	206	if (!argc) {
	207	argc = 1;
	208	argv[0] = ".";
	209	argv[1] = NULL;
2fd18a0a	210	}
4e9923b0 KB	211	doargs(argc, argv);
4e9923b0 KB	212	exit(0);
2fd18a0a KB	213	}
2fd18a0a KB	214
be4f2604 KB	215	static char path[MAXPATHLEN + 1];
	216	static char *endofpath = path;
	217
918d99af	218	doargs(argc, argv)
b3f77fd1 KB	219	int argc;
b3f77fd1 KB	220	char **argv;
2fd18a0a	221	{
c573514d	222	register LS dstatp, rstatp;
4845c19f	223	register int cnt, dircnt, maxlen, regcnt;
c573514d	224	LS dstats, rstats;
b3f77fd1	225	struct stat sb;
4845c19f KB	226	int (*statfcn)(), stat(), lstat();
	227	char top[MAXPATHLEN + 1];
	228	u_long blocks;
b3f77fd1	229
c573514d KB	230	/*
	231	* walk through the operands, building separate arrays of LS
	232	* structures for directory and non-directory files.
	233	*/
b3f77fd1	234	dstats = rstats = NULL;
562f122f	235	statfcn = (f_longform \|\| f_listdir) && !f_ignorelink ? lstat : stat;
b3f77fd1 KB	236	for (dircnt = regcnt = 0; *argv; ++argv) {
b3f77fd1 KB	237	if (statfcn(*argv, &sb)) {
562f122f KB	238	if (statfcn != stat \|\| lstat(*argv, &sb)) {
	239	(void)fprintf(stderr, "ls: %s: %s\n", *argv,
	240	strerror(errno));
	241	if (errno == ENOENT)
	242	continue;
	243	exit(1);
	244	}
9ffe97fe	245	}
4845c19f	246	if (S_ISDIR(sb.st_mode) && !f_listdir) {
b3f77fd1	247	if (!dstats)
c573514d	248	dstatp = dstats = (LS )emalloc((u_int)argc
b3f77fd1	249	(sizeof(LS)));
c573514d KB	250	dstatp->name = *argv;
	251	dstatp->lstat = sb;
	252	++dstatp;
b3f77fd1 KB	253	++dircnt;
	254	}
	255	else {
4845c19f	256	if (!rstats) {
c573514d	257	rstatp = rstats = (LS )emalloc((u_int)argc
b3f77fd1	258	(sizeof(LS)));
4845c19f KB	259	blocks = 0;
	260	maxlen = -1;
	261	}
c573514d KB	262	rstatp->name = *argv;
c573514d KB	263	rstatp->lstat = sb;
4845c19f KB	264
	265	/* save name length for -C format */
	266	rstatp->len = strlen(*argv);
	267
	268	if (f_nonprint)
	269	prcopy(argv, argv, rstatp->len);
	270
	271	/* calculate number of blocks if -l/-s formats */
	272	if (f_longform \|\| f_size)
	273	blocks += sb.st_blocks;
	274
	275	/* save max length if -C format */
	276	if (f_column && maxlen < rstatp->len)
	277	maxlen = rstatp->len;
	278
c573514d	279	++rstatp;
b3f77fd1	280	++regcnt;
9ffe97fe	281	}
9ffe97fe	282	}
c573514d	283	/* display regular files */
b3f77fd1	284	if (regcnt) {
4845c19f KB	285	rstats[0].lstat.st_btotal = blocks;
	286	rstats[0].lstat.st_maxlen = maxlen;
	287	displaydir(rstats, regcnt);
4dfe4db2	288	f_newline = f_dirname = 1;
547b0031	289	}
c573514d	290	/* display directories */
b3f77fd1	291	if (dircnt) {
be4f2604 KB	292	register char *p;
be4f2604 KB	293
4dfe4db2	294	f_total = 1;
95fa2ad8 KB	295	if (dircnt > 1) {
95fa2ad8 KB	296	(void)getwd(top);
b3f77fd1	297	qsort((char *)dstats, dircnt, sizeof(LS), sortfcn);
4dfe4db2	298	f_dirname = 1;
95fa2ad8 KB	299	}
95fa2ad8 KB	300	for (cnt = 0; cnt < dircnt; ++dstats) {
be4f2604 KB	301	for (endofpath = path, p = dstats->name;
be4f2604 KB	302	endofpath = p++; ++endofpath);
4dfe4db2 KB	303	subdir(dstats);
4dfe4db2 KB	304	f_newline = 1;
95fa2ad8 KB	305	if (++cnt < dircnt && chdir(top)) {
	306	(void)fprintf(stderr, "ls: %s: %s\n",
	307	top, strerror(errno));
	308	exit(1);
	309	}
be4f2604	310	}
547b0031	311	}
547b0031 BJ	312	}
547b0031 BJ	313
918d99af	314	displaydir(stats, num)
b3f77fd1 KB	315	LS *stats;
b3f77fd1 KB	316	register int num;
547b0031	317	{
be4f2604	318	register char p, savedpath;
b3f77fd1	319	LS *lp;
9ffe97fe	320
9d5fbfa8	321	if (num > 1 && !f_nosort) {
82567da7 KB	322	u_long save1, save2;
	323
	324	save1 = stats[0].lstat.st_btotal;
	325	save2 = stats[0].lstat.st_maxlen;
b3f77fd1	326	qsort((char *)stats, num, sizeof(LS), sortfcn);
82567da7 KB	327	stats[0].lstat.st_btotal = save1;
82567da7 KB	328	stats[0].lstat.st_maxlen = save2;
219ae3c3	329	}
9ffe97fe	330
4847d483	331	printfcn(stats, num);
547b0031	332
be4f2604 KB	333	if (f_recursive) {
be4f2604 KB	334	savedpath = endofpath;
b3f77fd1 KB	335	for (lp = stats; num--; ++lp) {
	336	if (!S_ISDIR(lp->lstat.st_mode))
	337	continue;
	338	p = lp->name;
	339	if (p[0] == '.' && (!p[1] \|\| p[1] == '.' && !p[2]))
	340	continue;
be4f2604 KB	341	if (endofpath != path && endofpath[-1] != '/')
	342	*endofpath++ = '/';
	343	for (; endofpath = p++; ++endofpath);
4dfe4db2 KB	344	f_newline = f_dirname = f_total = 1;
4dfe4db2 KB	345	subdir(lp);
be4f2604	346	*(endofpath = savedpath) = '\0';
b3f77fd1	347	}
be4f2604	348	}
547b0031 BJ	349	}
547b0031 BJ	350
4dfe4db2	351	subdir(lp)
b3f77fd1	352	LS *lp;
2fd18a0a	353	{
b3f77fd1 KB	354	LS *stats;
b3f77fd1 KB	355	int num;
be4f2604	356	char *names;
b3f77fd1	357
4dfe4db2	358	if (f_newline)
b3f77fd1	359	(void)putchar('\n');
4dfe4db2	360	if (f_dirname)
b3f77fd1 KB	361	(void)printf("%s:\n", path);
	362
	363	if (chdir(lp->name)) {
d6bb46f2 KB	364	(void)fprintf(stderr, "ls: %s: %s\n", lp->name,
d6bb46f2 KB	365	strerror(errno));
b3f77fd1	366	return;
2fd18a0a	367	}
c7f12bd6	368	if (num = tabdir(lp, &stats, &names)) {
918d99af	369	displaydir(stats, num);
c7f12bd6 KB	370	(void)free((char *)stats);
	371	(void)free((char *)names);
	372	}
b3f77fd1 KB	373	if (chdir("..")) {
	374	(void)fprintf(stderr, "ls: ..: %s\n", strerror(errno));
	375	exit(1);
2fd18a0a	376	}
547b0031 BJ	377	}
547b0031 BJ	378
918d99af	379	tabdir(lp, s_stats, s_names)
b3f77fd1 KB	380	LS lp, *s_stats;
b3f77fd1 KB	381	char **s_names;
547b0031	382	{
219ae3c3 KB	383	register DIR *dirp;
219ae3c3 KB	384	register int cnt, maxentry, maxlen;
b3f77fd1	385	register char p, names;
7a122474	386	struct dirent *dp;
219ae3c3	387	u_long blocks;
b3f77fd1	388	LS *stats;
547b0031	389
4e9923b0	390	if (!(dirp = opendir("."))) {
219ae3c3 KB	391	(void)fprintf(stderr, "ls: %s: %s\n", lp->name,
219ae3c3 KB	392	strerror(errno));
b3f77fd1	393	return(0);
9ffe97fe	394	}
c7f12bd6 KB	395	blocks = maxentry = maxlen = 0;
c7f12bd6 KB	396	stats = NULL;
7a122474	397	for (cnt = 0; dp = readdir(dirp);) {
c573514d	398	/* this does -A and -a */
7a122474	399	p = dp->d_name;
b3f77fd1 KB	400	if (p[0] == '.') {
	401	if (!f_listdot)
	402	continue;
	403	if (!f_listalldot && (!p[1] \|\| p[1] == '.' && !p[2]))
	404	continue;
	405	}
	406	if (cnt == maxentry) {
c7f12bd6 KB	407	if (!maxentry)
	408	*s_names = names =
	409	emalloc((u_int)lp->lstat.st_size);
	410	#define DEFNUM 256
	411	maxentry += DEFNUM;
	412	if (!(s_stats = stats = (LS )realloc((char *)stats,
b3f77fd1 KB	413	(u_int)maxentry * sizeof(LS))))
	414	nomem();
	415	}
4dfe4db2	416	if (f_needstat && lstat(dp->d_name, &stats[cnt].lstat)) {
b3f77fd1	417	(void)fprintf(stderr, "ls: %s: %s\n",
7a122474	418	dp->d_name, strerror(errno));
b3f77fd1 KB	419	if (errno == ENOENT)
	420	continue;
	421	exit(1);
	422	}
	423	stats[cnt].name = names;
219ae3c3	424
219ae3c3 KB	425	if (f_nonprint)
	426	prcopy(dp->d_name, names, (int)dp->d_namlen);
	427	else
	428	bcopy(dp->d_name, names, (int)dp->d_namlen);
7a122474	429	names += dp->d_namlen;
b3f77fd1	430	*names++ = '\0';
219ae3c3 KB	431
	432	/*
	433	* get the inode from the directory, so the -f flag
	434	* works right.
	435	*/
	436	stats[cnt].lstat.st_ino = dp->d_ino;
	437
	438	/* save name length for -C format */
	439	stats[cnt].len = dp->d_namlen;
4845c19f KB	440
4845c19f KB	441	/* calculate number of blocks if -l/-s formats */
82567da7	442	if (f_longform \|\| f_size)
219ae3c3	443	blocks += stats[cnt].lstat.st_blocks;
4845c19f	444
219ae3c3	445	/* save max length if -C format */
4845c19f	446	if (f_column && maxlen < (int)dp->d_namlen)
219ae3c3	447	maxlen = dp->d_namlen;
b3f77fd1	448	++cnt;
2fd18a0a	449	}
c7f12bd6 KB	450	(void)closedir(dirp);
	451
	452	if (cnt) {
	453	stats[0].lstat.st_btotal = blocks;
	454	stats[0].lstat.st_maxlen = maxlen;
	455	} else if (stats) {
	456	(void)free((char *)stats);
	457	(void)free((char *)names);
	458	}
b3f77fd1	459	return(cnt);
547b0031	460	}