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

#ifndef lint
static	char *sccsid = "@(#)ls.c	4.20 (Berkeley) %G%";
#endif

/*
 * ls
 *
 * 4.2bsd version for symbolic links, variable length
 * directory entries, block size in the inode, etc.
 */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/dir.h>
#include <stdio.h>
#include <sgtty.h>

#define	kbytes(size)	(((size) + 1023) / 1024)

struct afile {
	char	ftype;		/* file type, e.g. 'd', 'c', 'f' */
	ino_t	fnum;		/* inode number of file */
	short	fflags;		/* mode&~S_IFMT, perhaps ISARG */
	short	fnl;		/* number of links */
	short	fuid;		/* owner id */
	short	fgid;		/* group id */
	long	fsize;		/* file size */
	long	fblks;		/* number of blocks used */
	time_t	fmtime;		/* time (modify or access or create) */
	char	*fname;		/* file name */
	char	*flinkto;	/* symbolic link value */
};

#define ISARG	0x8000		/* extra ``mode'' */

struct subdirs {
	char	*sd_name;
	struct	subdirs *sd_next;
} *subdirs;

int	aflg, dflg, gflg, lflg, sflg, tflg, uflg, iflg, fflg, cflg, rflg = 1;
int	qflg, Aflg, Cflg, Fflg, Lflg, Rflg;

int	usetabs;

time_t	now, sixmonthsago;

char	*dotp = ".";

struct	afile *gstat();
int	fcmp();
char	*cat(), *savestr();
char	*fmtentry();
char	*getname(), *getgroup();

char	*ctime();
char	*malloc(), *calloc(), *realloc();
char	*sprintf(), *strcpy(), *strcat();

main(argc, argv)
	int argc;
	char *argv[];
{
	int i;
	struct afile *fp0, *fplast;
	register struct afile *fp;
	struct sgttyb sgbuf;

	argc--, argv++;
	if (getuid() == 0)
		Aflg++;
	(void) time(&now); sixmonthsago = now - 6L*30L*24L*60L*60L; now += 60;
	if (isatty(1)) {
		qflg = Cflg = 1;
		(void) gtty(1, &sgbuf);
		if ((sgbuf.sg_flags & XTABS) == 0)
			usetabs = 1;
	} else
		usetabs = 1;
	while (argc > 0 && **argv == '-') {
		(*argv)++;
		while (**argv) switch (*(*argv)++) {

		case 'C':
			Cflg = 1; break;
		case 'q':
			qflg = 1; break;
		case '1':
			Cflg = 0; break;
		case 'a':
			aflg++; break;
		case 'A':
			Aflg++; break;
		case 'c':
			cflg++; break;
		case 's':
			sflg++; break;
		case 'd':
			dflg++; break;
		case 'g':
			gflg++; break;
		case 'l':
			lflg++; break;
		case 'r':
			rflg = -1; break;
		case 't':
			tflg++; break;
		case 'u':
			uflg++; break;
		case 'i':
			iflg++; break;
		case 'f':
			fflg++; break;
		case 'L':
			Lflg++; break;
		case 'F':
		        Fflg++; break;
		case 'R':
		        Rflg++; break;
		}
		argc--, argv++;
	}
	if (fflg) { 
		aflg++; lflg = 0; sflg = 0; tflg = 0;
	}
	if (lflg)
		Cflg = 0;
	if (argc == 0) {
		argc++;
		argv = &dotp;
	}
	fp = (struct afile *)calloc(argc, sizeof (struct afile));
	if (fp == 0) {
		fprintf(stderr, "ls: out of memory\n");
		exit(1);
	}
	fp0 = fp;
	for (i = 0; i < argc; i++) {
		if (gstat(fp, *argv, 1, (int *)0)) {
			fp->fname = *argv;
			fp->fflags |= ISARG;
			fp++;
		}
		argv++;
	}
	fplast = fp;
	qsort(fp0, fplast - fp0, sizeof (struct afile), fcmp);
	if (dflg) {
		formatf(fp0, fplast);
		exit(0);
	}
	if (fflg)
		fp = fp0;
	else {
		for (fp = fp0; fp < fplast && fp->ftype != 'd'; fp++)
			continue;
		formatf(fp0, fp);
	}
	if (fp < fplast) {
		if (fp > fp0)
			printf("\n");
		for (;;) {
			formatd(fp->fname, argc > 1);
			while (subdirs) {
				struct subdirs *t;

				t = subdirs; subdirs = t->sd_next;
				printf("\n");
				formatd(t->sd_name, 1);
				cfree(t->sd_name);
				cfree((char *)t);
			}
			if (++fp == fplast)
				break;
			printf("\n");
		}
	}
	exit(0);
}

formatd(name, title)
	char *name;
	int title;
{
	register struct afile *fp;
	register struct subdirs *dp;
	struct afile *dfp0, *dfplast;
	int nkb;

	nkb = getdir(name, &dfp0, &dfplast);
	if (dfp0 == 0)
		return;
	if (fflg == 0)
		qsort(dfp0, dfplast - dfp0, sizeof (struct afile), fcmp);
	if (title)
		printf("%s:\n", name);
	if (lflg || sflg)
		printf("total %ld\n", nkb);
	formatf(dfp0, dfplast);
	if (Rflg)
		for (fp = dfplast; fp >= dfp0; fp--) {
			if (fp->ftype != 'd' ||
			    !strcmp(fp->fname, ".") ||
			    !strcmp(fp->fname, ".."))
				continue;
			dp = (struct subdirs *)malloc(sizeof (struct subdirs));
			dp->sd_name = savestr(cat(name, fp->fname));
			dp->sd_next = subdirs; subdirs = dp;
		}
	for (fp = dfp0; fp < dfplast; fp++) {
		if ((fp->fflags&ISARG) == 0 && fp->fname)
			cfree(fp->fname);
		if (fp->flinkto)
			cfree(fp->flinkto);
	}
	cfree((char *)dfp0);
}

getdir(dir, pfp0, pfplast)
	char *dir;
	struct afile **pfp0, **pfplast;
{
	register struct afile *fp;
	DIR *dirp;
	register struct direct *dp;
	int nb, nent = 20;

	dirp = opendir(dir);
	if (dirp == NULL) {
		*pfp0 = *pfplast = NULL;
		printf("%s unreadable\n", dir);		/* not stderr! */
		return (0);
	}
	fp = *pfp0 = (struct afile *)calloc(nent, sizeof (struct afile));
	*pfplast = *pfp0 + nent;
	nb = 0;
	while (dp = readdir(dirp)) {
		if (dp->d_ino == 0)
			continue;
		if (aflg == 0 && dp->d_name[0]=='.' &&
		    (Aflg == 0 || dp->d_name[1]==0 ||
		     dp->d_name[1]=='.' && dp->d_name[2]==0))
			continue;
		if (gstat(fp, cat(dir, dp->d_name), Fflg+Rflg, &nb) == 0)
			continue;
		fp->fnum = dp->d_ino;
		fp->fname = savestr(dp->d_name);
		fp++;
		if (fp == *pfplast) {
			*pfp0 = (struct afile *)realloc((char *)*pfp0,
			    2 * nent * sizeof (struct afile));
			if (*pfp0 == 0) {
				fprintf(stderr, "ls: out of memory\n");
				exit(1);
			}
			fp = *pfp0 + nent;
			*pfplast = fp + nent;
			nent *= 2;
		}
	}
	closedir(dirp);
	*pfplast = fp;
	return (kbytes(dbtob(nb)));
}

int	stat(), lstat();

struct afile *
gstat(fp, file, statarg, pnb)
	register struct afile *fp;
	char *file;
	int statarg, *pnb;
{
	int (*statf)() = Lflg ? stat : lstat;
	char buf[BUFSIZ]; int cc;
	static struct afile azerofile;

	*fp = azerofile;
	fp->fflags = 0;
	fp->fnum = 0;
	fp->ftype = '-';
	if (statarg || sflg || lflg || tflg) {
		struct stat stb, stb1;

		if ((*statf)(file, &stb) < 0) {
			if (statf == lstat || lstat(file, &stb) < 0) {
				fprintf(stderr, "%s not found\n", file);
				return (0);
			}
		}
		fp->fblks = stb.st_blocks;
		fp->fsize = stb.st_size;
		switch (stb.st_mode & S_IFMT) {

		case S_IFDIR:
			fp->ftype = 'd'; break;
		case S_IFBLK:
			fp->ftype = 'b'; fp->fsize = stb.st_rdev; break;
		case S_IFCHR:
			fp->ftype = 'c'; fp->fsize = stb.st_rdev; break;
		case S_IFSOCK:
			fp->ftype = 's'; fp->fsize = 0; break;
		case S_IFLNK:
			fp->ftype = 'l';
			if (lflg) {
				cc = readlink(file, buf, BUFSIZ);
				if (cc >= 0) {
					buf[cc] = 0;
					fp->flinkto = savestr(buf);
				}
				break;
			}
			if (stat(file, &stb1) < 0)
				break;
			if ((stb1.st_mode & S_IFMT) == S_IFDIR) {
				stb = stb1;
				fp->ftype = 'd';
				fp->fsize = stb.st_size;
				fp->fblks = stb.st_blocks;
			}
			break;
		}
		fp->fnum = stb.st_ino;
		fp->fflags = stb.st_mode & ~S_IFMT;
		fp->fnl = stb.st_nlink;
		fp->fuid = stb.st_uid;
		fp->fgid = stb.st_gid;
		if (uflg)
			fp->fmtime = stb.st_atime;
		else if (cflg)
			fp->fmtime = stb.st_ctime;
		else
			fp->fmtime = stb.st_mtime;
		if (pnb)
			*pnb += stb.st_blocks;
	}
	return (fp);
}

formatf(fp0, fplast)
	struct afile *fp0, *fplast;
{
	register struct afile *fp;
	int width = 0, w, nentry = fplast - fp0;
	int i, j, columns, lines;
	char *cp;

	if (fp0 == fplast)
		return;
	if (lflg || Cflg == 0)
		columns = 1;
	else {
		for (fp = fp0; fp < fplast; fp++) {
			int len = strlen(fmtentry(fp));

			if (len > width)
				width = len;
		}
		if (usetabs)
			width = (width + 8) &~ 7;
		else
			width += 2;
		columns = 80 / width;
		if (columns == 0)
			columns = 1;
	}
	lines = (nentry + columns - 1) / columns;
	for (i = 0; i < lines; i++) {
		for (j = 0; j < columns; j++) {
			fp = fp0 + j * lines + i;
			cp = fmtentry(fp);
			printf("%s", cp);
			if (fp + lines >= fplast) {
				printf("\n");
				break;
			}
			w = strlen(cp);
			while (w < width)
				if (usetabs) {
					w = (w + 8) &~ 7;
					putchar('\t');
				} else {
					w++;
					putchar(' ');
				}
		}
	}
}

fcmp(f1, f2)
	register struct afile *f1, *f2;
{

	if (dflg == 0 && fflg == 0) {
		if ((f1->fflags&ISARG) && f1->ftype == 'd') {
			if ((f2->fflags&ISARG) == 0 || f2->ftype != 'd')
				return (1);
		} else {
			if ((f2->fflags&ISARG) && f2->ftype == 'd')
				return (-1);
		}
	}
	if (tflg) {
		if (f2->fmtime == f1->fmtime)
			return (0);
		if (f2->fmtime > f1->fmtime)
			return (rflg);
		return (-rflg);
	}
	return (rflg * strcmp(f1->fname, f2->fname));
}

char *
cat(dir, file)
	char *dir, *file;
{
	static char dfile[BUFSIZ];

	if (strlen(dir)+1+strlen(file)+1 > BUFSIZ) {
		fprintf(stderr, "ls: filename too long\n");
		exit(1);
	}
	if (!strcmp(dir, "") || !strcmp(dir, ".")) {
		(void) strcpy(dfile, file);
		return (dfile);
	}
	(void) strcpy(dfile, dir);
	if (dir[strlen(dir) - 1] != '/' && *file != '/')
		(void) strcat(dfile, "/");
	(void) strcat(dfile, file);
	return (dfile);
}

char *
savestr(str)
	char *str;
{
	char *cp = malloc(strlen(str) + 1);

	if (cp == NULL) {
		fprintf(stderr, "ls: out of memory\n");
		exit(1);
	}
	(void) strcpy(cp, str);
	return (cp);
}

char	*fmtinum(), *fmtsize(), *fmtlstuff(), *fmtmode();

char *
fmtentry(fp)
	register struct afile *fp;
{
	static char fmtres[BUFSIZ];
	register char *cp, *dp;

	(void) sprintf(fmtres, "%s%s%s",
	    iflg ? fmtinum(fp) : "",
	    sflg ? fmtsize(fp) : "",
	    lflg ? fmtlstuff(fp) : "");
	dp = &fmtres[strlen(fmtres)];
	for (cp = fp->fname; *cp; cp++)
		if (qflg && (*cp < ' ' || *cp >= 0177))
			*dp++ = '?';
		else
			*dp++ = *cp;
	if (Fflg) {
		if (fp->ftype == 'd')
			*dp++ = '/';
		else if (fp->ftype == 'l')
			*dp++ = '@';
		else if (fp->ftype == 's')
			*dp++ = '=';
		else if (fp->fflags & 0111)
			*dp++ = '*';
	}
	if (lflg && fp->flinkto) {
		(void) strcpy(dp, " -> "); dp += 4;
		for (cp = fp->flinkto; *cp; cp++)
			if (qflg && (*cp < ' ' || *cp >= 0177))
				*dp++ = '?';
			else
				*dp++ = *cp;
	}
	*dp++ = 0;
	return (fmtres);
}

char *
fmtinum(p)
	register struct afile *p;
{
	static char inumbuf[8];

	(void) sprintf(inumbuf, "%5d ", p->fnum);
	return (inumbuf);
}

char *
fmtsize(p)
	register struct afile *p;
{
	static char sizebuf[32];

	(void) sprintf(sizebuf, "%4ld ", kbytes(dbtob(p->fblks)));
	return (sizebuf);
}

char *
fmtlstuff(p)
	register struct afile *p;
{
	static char lstuffbuf[256];
	char gname[32], uname[32], fsize[32], ftime[32];
	register char *lp = lstuffbuf;

	/* type mode uname gname fsize ftime */
/* get uname */
	{ char *cp = getname(p->fuid);
	  if (cp)
		(void) sprintf(uname, "%-9.9s", cp);
	  else
		(void) sprintf(uname, "%-9d", p->fuid);
	}
/* get gname */
	if (gflg) {
	  char *cp = getgroup(p->fgid);
	  if (cp)
		(void) sprintf(gname, "%-9.9s", cp);
	  else
		(void) sprintf(gname, "%-9d", p->fgid);
	}
/* get fsize */
	if (p->ftype == 'b' || p->ftype == 'c')
		(void) sprintf(fsize, "%3d,%4d",
		    major(p->fsize), minor(p->fsize));
	else if (p->ftype == 's')
		(void) sprintf(fsize, "%8ld", 0);
	else
		(void) sprintf(fsize, "%8ld", p->fsize);
/* get ftime */
	{ char *cp = ctime(&p->fmtime);
	  if ((p->fmtime < sixmonthsago) || (p->fmtime > now))
		(void) sprintf(ftime, " %-7.7s %-4.4s ", cp+4, cp+20);
	  else
		(void) sprintf(ftime, " %-12.12s ", cp+4);
	}
/* splat */
	*lp++ = p->ftype;
	lp = fmtmode(lp, p->fflags);
	(void) sprintf(lp, "%3d %s%s%s%s",
	    p->fnl, uname, gflg ? gname : "", fsize, ftime);
	return (lstuffbuf);
}

int	m1[] = { 1, S_IREAD>>0, 'r', '-' };
int	m2[] = { 1, S_IWRITE>>0, 'w', '-' };
int	m3[] = { 2, S_ISUID, 's', S_IEXEC>>0, 'x', '-' };
int	m4[] = { 1, S_IREAD>>3, 'r', '-' };
int	m5[] = { 1, S_IWRITE>>3, 'w', '-' };
int	m6[] = { 2, S_ISGID, 's', S_IEXEC>>3, 'x', '-' };
int	m7[] = { 1, S_IREAD>>6, 'r', '-' };
int	m8[] = { 1, S_IWRITE>>6, 'w', '-' };
int	m9[] = { 2, S_ISVTX, 't', S_IEXEC>>6, 'x', '-' };

int	*m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9};

char *
fmtmode(lp, flags)
	char *lp;
	int flags;
{
	int **mp;

	for (mp = &m[0]; mp < &m[sizeof(m)/sizeof(m[0])]; ) {
		register int *pairp = *mp++;
		register int n = *pairp++;

		while (--n >= 0 && (flags&*pairp++) == 0)
			pairp++;
		*lp++ = *pairp;
	}
	return (lp);
}

/* rest should be done with nameserver or database */

#include <pwd.h>
#include <grp.h>
#include <utmp.h>

struct	utmp utmp;
#define	NMAX	(sizeof (utmp.ut_name))
#define SCPYN(a, b)	strncpy(a, b, NMAX)

#define NUID	2048
#define NGID	300

char	names[NUID][NMAX+1];
char	outrangename[NMAX+1];
int	outrangeuid = -1;
char	groups[NGID][NMAX+1];
char	outrangegroup[NMAX+1];
int	outrangegid = -1;

char *
getname(uid)
{
	register struct passwd *pw;
	static init;
	struct passwd *getpwent();

	if (uid >= 0 && uid < NUID && names[uid][0])
		return (&names[uid][0]);
	if (uid >= 0 && uid == outrangeuid)
		return (outrangename);
rescan:
	if (init == 2) {
		if (uid < NUID)
			return (0);
		setpwent();
		while (pw = getpwent()) {
			if (pw->pw_uid != uid)
				continue;
			outrangeuid = pw->pw_uid;
			SCPYN(outrangename, pw->pw_name);
			endpwent();
			return (outrangename);
		}
		endpwent();
		return (0);
	}
	if (init == 0)
		setpwent(), init = 1;
	while (pw = getpwent()) {
		if (pw->pw_uid < 0 || pw->pw_uid >= NUID) {
			if (pw->pw_uid == uid) {
				outrangeuid = pw->pw_uid;
				SCPYN(outrangename, pw->pw_name);
				return (outrangename);
			}
			continue;
		}
		if (names[pw->pw_uid][0])
			continue;
		SCPYN(names[pw->pw_uid], pw->pw_name);
		if (pw->pw_uid == uid)
			return (&names[uid][0]);
	}
	init = 2;
	goto rescan;
}

char *
getgroup(gid)
{
	register struct group *gr;
	static init;
	struct group *getgrent();

	if (gid >= 0 && gid < NGID && groups[gid][0])
		return (&groups[gid][0]);
	if (gid >= 0 && gid == outrangegid)
		return (outrangegroup);
rescan:
	if (init == 2) {
		if (gid < NGID)
			return (0);
		setgrent();
		while (gr = getgrent()) {
			if (gr->gr_gid != gid)
				continue;
			outrangegid = gr->gr_gid;
			SCPYN(outrangegroup, gr->gr_name);
			endgrent();
			return (outrangegroup);
		}
		endgrent();
		return (0);
	}
	if (init == 0)
		setgrent(), init = 1;
	while (gr = getgrent()) {
		if (gr->gr_gid < 0 || gr->gr_gid >= NGID) {
			if (gr->gr_gid == gid) {
				outrangegid = gr->gr_gid;
				SCPYN(outrangegroup, gr->gr_name);
				return (outrangegroup);
			}
			continue;
		}
		if (groups[gr->gr_gid][0])
			continue;
		SCPYN(groups[gr->gr_gid], gr->gr_name);
		if (gr->gr_gid == gid)
			return (&groups[gid][0]);
	}
	init = 2;
	goto rescan;
}
Commit	Line	Data
547b0031	1	#ifndef lint
ed1aa7ae	2	static char *sccsid = "@(#)ls.c 4.20 (Berkeley) %G%";
547b0031 BJ	3	#endif
	4
	5	/*
	6	* ls
	7	*
905d30b9 SL	8	* 4.2bsd version for symbolic links, variable length
905d30b9 SL	9	* directory entries, block size in the inode, etc.
547b0031	10	*/
547b0031 BJ	11	#include <sys/param.h>
547b0031 BJ	12	#include <sys/stat.h>
e957bf05	13	#include <sys/dir.h>
547b0031 BJ	14	#include <stdio.h>
	15	#include <sgtty.h>
	16
905d30b9	17	#define kbytes(size) (((size) + 1023) / 1024)
547b0031 BJ	18
	19	struct afile {
	20	char ftype; /* file type, e.g. 'd', 'c', 'f' */
	21	ino_t fnum; /* inode number of file */
	22	short fflags; /* mode&~S_IFMT, perhaps ISARG */
	23	short fnl; /* number of links */
	24	short fuid; /* owner id */
	25	short fgid; /* group id */
	26	long fsize; /* file size */
905d30b9	27	long fblks; /* number of blocks used */
547b0031 BJ	28	time_t fmtime; /* time (modify or access or create) */
	29	char fname; / file name */
	30	char flinkto; / symbolic link value */
	31	};
	32
	33	#define ISARG 0x8000 /* extra ``mode'' */
	34
	35	struct subdirs {
	36	char *sd_name;
	37	struct subdirs *sd_next;
	38	} *subdirs;
	39
9fcd824c	40	int aflg, dflg, gflg, lflg, sflg, tflg, uflg, iflg, fflg, cflg, rflg = 1;
791c0121	41	int qflg, Aflg, Cflg, Fflg, Lflg, Rflg;
547b0031 BJ	42
	43	int usetabs;
	44
	45	time_t now, sixmonthsago;
	46
	47	char *dotp = ".";
	48
	49	struct afile *gstat();
	50	int fcmp();
	51	char cat(), savestr();
	52	char *fmtentry();
	53	char getname(), getgroup();
	54
	55	char *ctime();
	56	char malloc(), calloc(), *realloc();
	57	char sprintf(), strcpy(), *strcat();
	58
	59	main(argc, argv)
	60	int argc;
	61	char *argv[];
	62	{
	63	int i;
	64	struct afile fp0, fplast;
	65	register struct afile *fp;
	66	struct sgttyb sgbuf;
	67
	68	argc--, argv++;
	69	if (getuid() == 0)
	70	Aflg++;
	71	(void) time(&now); sixmonthsago = now - 6L30L24L60L60L; now += 60;
	72	if (isatty(1)) {
547b0031 BJ	73	qflg = Cflg = 1;
	74	(void) gtty(1, &sgbuf);
	75	if ((sgbuf.sg_flags & XTABS) == 0)
	76	usetabs = 1;
	77	} else
	78	usetabs = 1;
	79	while (argc > 0 && **argv == '-') {
	80	(*argv)++;
	81	while (*argv) switch ((*argv)++) {
	82
	83	case 'C':
	84	Cflg = 1; break;
	85	case 'q':
	86	qflg = 1; break;
	87	case '1':
	88	Cflg = 0; break;
	89	case 'a':
	90	aflg++; break;
	91	case 'A':
	92	Aflg++; break;
	93	case 'c':
	94	cflg++; break;
	95	case 's':
	96	sflg++; break;
	97	case 'd':
	98	dflg++; break;
	99	case 'g':
	100	gflg++; break;
	101	case 'l':
	102	lflg++; break;
	103	case 'r':
	104	rflg = -1; break;
	105	case 't':
	106	tflg++; break;
	107	case 'u':
	108	uflg++; break;
	109	case 'i':
	110	iflg++; break;
9fcd824c SL	111	case 'f':
9fcd824c SL	112	fflg++; break;
791c0121 BJ	113	case 'L':
791c0121 BJ	114	Lflg++; break;
547b0031 BJ	115	case 'F':
	116	Fflg++; break;
	117	case 'R':
	118	Rflg++; break;
	119	}
	120	argc--, argv++;
	121	}
9fcd824c SL	122	if (fflg) {
	123	aflg++; lflg = 0; sflg = 0; tflg = 0;
	124	}
547b0031 BJ	125	if (lflg)
	126	Cflg = 0;
	127	if (argc == 0) {
	128	argc++;
	129	argv = &dotp;
	130	}
	131	fp = (struct afile *)calloc(argc, sizeof (struct afile));
	132	if (fp == 0) {
	133	fprintf(stderr, "ls: out of memory\n");
	134	exit(1);
	135	}
	136	fp0 = fp;
	137	for (i = 0; i < argc; i++) {
2955376b BJ	138	if (gstat(fp, argv, 1, (int )0)) {
	139	fp->fname = *argv;
	140	fp->fflags \|= ISARG;
	141	fp++;
	142	}
547b0031 BJ	143	argv++;
	144	}
	145	fplast = fp;
	146	qsort(fp0, fplast - fp0, sizeof (struct afile), fcmp);
	147	if (dflg) {
	148	formatf(fp0, fplast);
	149	exit(0);
	150	}
9fcd824c SL	151	if (fflg)
	152	fp = fp0;
	153	else {
	154	for (fp = fp0; fp < fplast && fp->ftype != 'd'; fp++)
	155	continue;
	156	formatf(fp0, fp);
	157	}
547b0031 BJ	158	if (fp < fplast) {
	159	if (fp > fp0)
	160	printf("\n");
	161	for (;;) {
	162	formatd(fp->fname, argc > 1);
	163	while (subdirs) {
	164	struct subdirs *t;
	165
	166	t = subdirs; subdirs = t->sd_next;
	167	printf("\n");
	168	formatd(t->sd_name, 1);
	169	cfree(t->sd_name);
	170	cfree((char *)t);
	171	}
	172	if (++fp == fplast)
	173	break;
	174	printf("\n");
	175	}
	176	}
	177	exit(0);
	178	}
	179
	180	formatd(name, title)
	181	char *name;
	182	int title;
	183	{
	184	register struct afile *fp;
	185	register struct subdirs *dp;
	186	struct afile dfp0, dfplast;
	187	int nkb;
	188
	189	nkb = getdir(name, &dfp0, &dfplast);
	190	if (dfp0 == 0)
	191	return;
9fcd824c SL	192	if (fflg == 0)
9fcd824c SL	193	qsort(dfp0, dfplast - dfp0, sizeof (struct afile), fcmp);
547b0031 BJ	194	if (title)
	195	printf("%s:\n", name);
	196	if (lflg \|\| sflg)
	197	printf("total %ld\n", nkb);
	198	formatf(dfp0, dfplast);
	199	if (Rflg)
	200	for (fp = dfplast; fp >= dfp0; fp--) {
	201	if (fp->ftype != 'd' \|\|
	202	!strcmp(fp->fname, ".") \|\|
	203	!strcmp(fp->fname, ".."))
	204	continue;
	205	dp = (struct subdirs *)malloc(sizeof (struct subdirs));
	206	dp->sd_name = savestr(cat(name, fp->fname));
	207	dp->sd_next = subdirs; subdirs = dp;
	208	}
	209	for (fp = dfp0; fp < dfplast; fp++) {
	210	if ((fp->fflags&ISARG) == 0 && fp->fname)
	211	cfree(fp->fname);
	212	if (fp->flinkto)
	213	cfree(fp->flinkto);
	214	}
	215	cfree((char *)dfp0);
	216	}
	217
	218	getdir(dir, pfp0, pfplast)
	219	char *dir;
	220	struct afile pfp0, pfplast;
	221	{
	222	register struct afile *fp;
	223	DIR *dirp;
	224	register struct direct *dp;
905d30b9	225	int nb, nent = 20;
547b0031 BJ	226
	227	dirp = opendir(dir);
	228	if (dirp == NULL) {
	229	pfp0 = pfplast = NULL;
	230	printf("%s unreadable\n", dir); /* not stderr! */
	231	return (0);
	232	}
	233	fp = pfp0 = (struct afile )calloc(nent, sizeof (struct afile));
	234	pfplast = pfp0 + nent;
905d30b9	235	nb = 0;
547b0031 BJ	236	while (dp = readdir(dirp)) {
	237	if (dp->d_ino == 0)
	238	continue;
	239	if (aflg == 0 && dp->d_name[0]=='.' &&
	240	(Aflg == 0 \|\| dp->d_name[1]==0 \|\|
	241	dp->d_name[1]=='.' && dp->d_name[2]==0))
	242	continue;
905d30b9	243	if (gstat(fp, cat(dir, dp->d_name), Fflg+Rflg, &nb) == 0)
547b0031 BJ	244	continue;
	245	fp->fnum = dp->d_ino;
	246	fp->fname = savestr(dp->d_name);
	247	fp++;
	248	if (fp == *pfplast) {
	249	pfp0 = (struct afile )realloc((char )pfp0,
	250	2 * nent * sizeof (struct afile));
	251	if (*pfp0 == 0) {
	252	fprintf(stderr, "ls: out of memory\n");
	253	exit(1);
	254	}
	255	fp = *pfp0 + nent;
	256	*pfplast = fp + nent;
	257	nent *= 2;
	258	}
	259	}
	260	closedir(dirp);
	261	*pfplast = fp;
905d30b9	262	return (kbytes(dbtob(nb)));
547b0031 BJ	263	}
	264
	265	int stat(), lstat();
	266
	267	struct afile *
905d30b9	268	gstat(fp, file, statarg, pnb)
547b0031 BJ	269	register struct afile *fp;
547b0031 BJ	270	char *file;
905d30b9	271	int statarg, *pnb;
547b0031	272	{
9fcd824c	273	int (*statf)() = Lflg ? stat : lstat;
547b0031 BJ	274	char buf[BUFSIZ]; int cc;
	275	static struct afile azerofile;
	276
	277	*fp = azerofile;
	278	fp->fflags = 0;
	279	fp->fnum = 0;
	280	fp->ftype = '-';
	281	if (statarg \|\| sflg \|\| lflg \|\| tflg) {
cc1b4140	282	struct stat stb, stb1;
547b0031 BJ	283
547b0031 BJ	284	if ((*statf)(file, &stb) < 0) {
1d28a39b	285	if (statf == lstat \|\| lstat(file, &stb) < 0) {
5af7550c SL	286	fprintf(stderr, "%s not found\n", file);
	287	return (0);
	288	}
547b0031	289	}
905d30b9	290	fp->fblks = stb.st_blocks;
2955376b	291	fp->fsize = stb.st_size;
547b0031 BJ	292	switch (stb.st_mode & S_IFMT) {
	293
	294	case S_IFDIR:
	295	fp->ftype = 'd'; break;
	296	case S_IFBLK:
	297	fp->ftype = 'b'; fp->fsize = stb.st_rdev; break;
	298	case S_IFCHR:
	299	fp->ftype = 'c'; fp->fsize = stb.st_rdev; break;
b1198826 SL	300	case S_IFSOCK:
b1198826 SL	301	fp->ftype = 's'; fp->fsize = 0; break;
547b0031 BJ	302	case S_IFLNK:
	303	fp->ftype = 'l';
	304	if (lflg) {
	305	cc = readlink(file, buf, BUFSIZ);
	306	if (cc >= 0) {
	307	buf[cc] = 0;
	308	fp->flinkto = savestr(buf);
	309	}
cc1b4140 KM	310	break;
	311	}
	312	if (stat(file, &stb1) < 0)
	313	break;
	314	if ((stb1.st_mode & S_IFMT) == S_IFDIR) {
	315	stb = stb1;
	316	fp->ftype = 'd';
	317	fp->fsize = stb.st_size;
905d30b9	318	fp->fblks = stb.st_blocks;
547b0031 BJ	319	}
	320	break;
	321	}
	322	fp->fnum = stb.st_ino;
	323	fp->fflags = stb.st_mode & ~S_IFMT;
	324	fp->fnl = stb.st_nlink;
	325	fp->fuid = stb.st_uid;
	326	fp->fgid = stb.st_gid;
547b0031 BJ	327	if (uflg)
	328	fp->fmtime = stb.st_atime;
	329	else if (cflg)
	330	fp->fmtime = stb.st_ctime;
	331	else
	332	fp->fmtime = stb.st_mtime;
905d30b9 SL	333	if (pnb)
905d30b9 SL	334	*pnb += stb.st_blocks;
547b0031 BJ	335	}
	336	return (fp);
	337	}
	338
	339	formatf(fp0, fplast)
	340	struct afile fp0, fplast;
	341	{
	342	register struct afile *fp;
	343	int width = 0, w, nentry = fplast - fp0;
	344	int i, j, columns, lines;
	345	char *cp;
	346
	347	if (fp0 == fplast)
	348	return;
	349	if (lflg \|\| Cflg == 0)
	350	columns = 1;
	351	else {
	352	for (fp = fp0; fp < fplast; fp++) {
	353	int len = strlen(fmtentry(fp));
	354
	355	if (len > width)
	356	width = len;
	357	}
	358	if (usetabs)
	359	width = (width + 8) &~ 7;
	360	else
	361	width += 2;
	362	columns = 80 / width;
	363	if (columns == 0)
	364	columns = 1;
	365	}
	366	lines = (nentry + columns - 1) / columns;
	367	for (i = 0; i < lines; i++) {
	368	for (j = 0; j < columns; j++) {
	369	fp = fp0 + j * lines + i;
	370	cp = fmtentry(fp);
	371	printf("%s", cp);
	372	if (fp + lines >= fplast) {
	373	printf("\n");
	374	break;
	375	}
	376	w = strlen(cp);
	377	while (w < width)
	378	if (usetabs) {
	379	w = (w + 8) &~ 7;
	380	putchar('\t');
	381	} else {
	382	w++;
	383	putchar(' ');
	384	}
	385	}
	386	}
	387	}
	388
	389	fcmp(f1, f2)
	390	register struct afile f1, f2;
	391	{
	392
9fcd824c	393	if (dflg == 0 && fflg == 0) {
547b0031 BJ	394	if ((f1->fflags&ISARG) && f1->ftype == 'd') {
	395	if ((f2->fflags&ISARG) == 0 \|\| f2->ftype != 'd')
	396	return (1);
	397	} else {
	398	if ((f2->fflags&ISARG) && f2->ftype == 'd')
	399	return (-1);
	400	}
	401	}
	402	if (tflg) {
	403	if (f2->fmtime == f1->fmtime)
	404	return (0);
	405	if (f2->fmtime > f1->fmtime)
	406	return (rflg);
	407	return (-rflg);
	408	}
	409	return (rflg * strcmp(f1->fname, f2->fname));
	410	}
	411
	412	char *
	413	cat(dir, file)
	414	char dir, file;
	415	{
	416	static char dfile[BUFSIZ];
	417
	418	if (strlen(dir)+1+strlen(file)+1 > BUFSIZ) {
	419	fprintf(stderr, "ls: filename too long\n");
	420	exit(1);
	421	}
	422	if (!strcmp(dir, "") \|\| !strcmp(dir, ".")) {
	423	(void) strcpy(dfile, file);
	424	return (dfile);
	425	}
	426	(void) strcpy(dfile, dir);
	427	if (dir[strlen(dir) - 1] != '/' && *file != '/')
	428	(void) strcat(dfile, "/");
	429	(void) strcat(dfile, file);
	430	return (dfile);
	431	}
	432
	433	char *
	434	savestr(str)
	435	char *str;
	436	{
	437	char *cp = malloc(strlen(str) + 1);
	438
	439	if (cp == NULL) {
	440	fprintf(stderr, "ls: out of memory\n");
	441	exit(1);
	442	}
	443	(void) strcpy(cp, str);
	444	return (cp);
	445	}
	446
	447	char fmtinum(), fmtsize(), fmtlstuff(), fmtmode();
	448
	449	char *
	450	fmtentry(fp)
	451	register struct afile *fp;
	452	{
	453	static char fmtres[BUFSIZ];
	454	register char cp, dp;
	455
9cdf1877	456	(void) sprintf(fmtres, "%s%s%s",
547b0031 BJ	457	iflg ? fmtinum(fp) : "",
	458	sflg ? fmtsize(fp) : "",
	459	lflg ? fmtlstuff(fp) : "");
	460	dp = &fmtres[strlen(fmtres)];
	461	for (cp = fp->fname; *cp; cp++)
	462	if (qflg && (cp < ' ' \|\| cp >= 0177))
	463	*dp++ = '?';
	464	else
	465	dp++ = cp;
	466	if (Fflg) {
	467	if (fp->ftype == 'd')
	468	*dp++ = '/';
404df744 BJ	469	else if (fp->ftype == 'l')
404df744 BJ	470	*dp++ = '@';
b1198826 SL	471	else if (fp->ftype == 's')
b1198826 SL	472	*dp++ = '=';
547b0031 BJ	473	else if (fp->fflags & 0111)
	474	dp++ = '';
	475	}
	476	if (lflg && fp->flinkto) {
	477	(void) strcpy(dp, " -> "); dp += 4;
	478	for (cp = fp->flinkto; *cp; cp++)
	479	if (qflg && (cp < ' ' \|\| cp >= 0177))
	480	*dp++ = '?';
	481	else
	482	dp++ = cp;
	483	}
	484	*dp++ = 0;
	485	return (fmtres);
	486	}
	487
	488	char *
	489	fmtinum(p)
	490	register struct afile *p;
	491	{
	492	static char inumbuf[8];
	493
	494	(void) sprintf(inumbuf, "%5d ", p->fnum);
	495	return (inumbuf);
	496	}
	497
	498	char *
	499	fmtsize(p)
	500	register struct afile *p;
	501	{
	502	static char sizebuf[32];
	503
905d30b9	504	(void) sprintf(sizebuf, "%4ld ", kbytes(dbtob(p->fblks)));
547b0031 BJ	505	return (sizebuf);
	506	}
	507
	508	char *
	509	fmtlstuff(p)
	510	register struct afile *p;
	511	{
	512	static char lstuffbuf[256];
	513	char gname[32], uname[32], fsize[32], ftime[32];
	514	register char *lp = lstuffbuf;
	515
	516	/* type mode uname gname fsize ftime */
	517	/* get uname */
	518	{ char *cp = getname(p->fuid);
	519	if (cp)
	520	(void) sprintf(uname, "%-9.9s", cp);
	521	else
	522	(void) sprintf(uname, "%-9d", p->fuid);
	523	}
	524	/* get gname */
	525	if (gflg) {
	526	char *cp = getgroup(p->fgid);
	527	if (cp)
	528	(void) sprintf(gname, "%-9.9s", cp);
	529	else
	530	(void) sprintf(gname, "%-9d", p->fgid);
	531	}
	532	/* get fsize */
	533	if (p->ftype == 'b' \|\| p->ftype == 'c')
	534	(void) sprintf(fsize, "%3d,%4d",
	535	major(p->fsize), minor(p->fsize));
b1198826 SL	536	else if (p->ftype == 's')
b1198826 SL	537	(void) sprintf(fsize, "%8ld", 0);
547b0031 BJ	538	else
	539	(void) sprintf(fsize, "%8ld", p->fsize);
	540	/* get ftime */
	541	{ char *cp = ctime(&p->fmtime);
	542	if ((p->fmtime < sixmonthsago) \|\| (p->fmtime > now))
	543	(void) sprintf(ftime, " %-7.7s %-4.4s ", cp+4, cp+20);
	544	else
	545	(void) sprintf(ftime, " %-12.12s ", cp+4);
	546	}
	547	/* splat */
	548	*lp++ = p->ftype;
	549	lp = fmtmode(lp, p->fflags);
	550	(void) sprintf(lp, "%3d %s%s%s%s",
	551	p->fnl, uname, gflg ? gname : "", fsize, ftime);
	552	return (lstuffbuf);
	553	}
	554
	555	int m1[] = { 1, S_IREAD>>0, 'r', '-' };
	556	int m2[] = { 1, S_IWRITE>>0, 'w', '-' };
	557	int m3[] = { 2, S_ISUID, 's', S_IEXEC>>0, 'x', '-' };
	558	int m4[] = { 1, S_IREAD>>3, 'r', '-' };
	559	int m5[] = { 1, S_IWRITE>>3, 'w', '-' };
	560	int m6[] = { 2, S_ISGID, 's', S_IEXEC>>3, 'x', '-' };
	561	int m7[] = { 1, S_IREAD>>6, 'r', '-' };
	562	int m8[] = { 1, S_IWRITE>>6, 'w', '-' };
	563	int m9[] = { 2, S_ISVTX, 't', S_IEXEC>>6, 'x', '-' };
	564
	565	int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9};
	566
	567	char *
	568	fmtmode(lp, flags)
	569	char *lp;
	570	int flags;
	571	{
	572	int **mp;
	573
	574	for (mp = &m[0]; mp < &m[sizeof(m)/sizeof(m[0])]; ) {
	575	register int pairp = mp++;
	576	register int n = *pairp++;
	577
	578	while (--n >= 0 && (flags&*pairp++) == 0)
	579	pairp++;
	580	lp++ = pairp;
	581	}
	582	return (lp);
	583	}
	584
	585	/* rest should be done with nameserver or database */
	586
	587	#include <pwd.h>
	588	#include <grp.h>
	589	#include <utmp.h>
	590
	591	struct utmp utmp;
93b9cc72 SL	592	#define NMAX (sizeof (utmp.ut_name))
93b9cc72 SL	593	#define SCPYN(a, b) strncpy(a, b, NMAX)
547b0031 BJ	594
	595	#define NUID 2048
	596	#define NGID 300
547b0031 BJ	597
547b0031 BJ	598	char names[NUID][NMAX+1];
94d5b261 KM	599	char outrangename[NMAX+1];
94d5b261 KM	600	int outrangeuid = -1;
adce3e94 KM	601	char groups[NGID][NMAX+1];
	602	char outrangegroup[NMAX+1];
	603	int outrangegid = -1;
547b0031 BJ	604
	605	char *
	606	getname(uid)
	607	{
	608	register struct passwd *pw;
	609	static init;
	610	struct passwd *getpwent();
	611
	612	if (uid >= 0 && uid < NUID && names[uid][0])
	613	return (&names[uid][0]);
94d5b261 KM	614	if (uid >= 0 && uid == outrangeuid)
94d5b261 KM	615	return (outrangename);
ed1aa7ae	616	rescan:
94d5b261 KM	617	if (init == 2) {
	618	if (uid < NUID)
	619	return (0);
	620	setpwent();
	621	while (pw = getpwent()) {
	622	if (pw->pw_uid != uid)
	623	continue;
	624	outrangeuid = pw->pw_uid;
93b9cc72	625	SCPYN(outrangename, pw->pw_name);
94d5b261 KM	626	endpwent();
	627	return (outrangename);
	628	}
	629	endpwent();
547b0031	630	return (0);
94d5b261	631	}
547b0031 BJ	632	if (init == 0)
	633	setpwent(), init = 1;
	634	while (pw = getpwent()) {
94d5b261 KM	635	if (pw->pw_uid < 0 \|\| pw->pw_uid >= NUID) {
	636	if (pw->pw_uid == uid) {
	637	outrangeuid = pw->pw_uid;
93b9cc72	638	SCPYN(outrangename, pw->pw_name);
94d5b261 KM	639	return (outrangename);
94d5b261 KM	640	}
547b0031	641	continue;
94d5b261	642	}
547b0031 BJ	643	if (names[pw->pw_uid][0])
547b0031 BJ	644	continue;
93b9cc72	645	SCPYN(names[pw->pw_uid], pw->pw_name);
ed1aa7ae	646	if (pw->pw_uid == uid)
547b0031	647	return (&names[uid][0]);
547b0031 BJ	648	}
547b0031 BJ	649	init = 2;
ed1aa7ae	650	goto rescan;
547b0031 BJ	651	}
	652
	653	char *
	654	getgroup(gid)
	655	{
	656	register struct group *gr;
	657	static init;
	658	struct group *getgrent();
	659
	660	if (gid >= 0 && gid < NGID && groups[gid][0])
	661	return (&groups[gid][0]);
adce3e94 KM	662	if (gid >= 0 && gid == outrangegid)
adce3e94 KM	663	return (outrangegroup);
ed1aa7ae	664	rescan:
adce3e94 KM	665	if (init == 2) {
	666	if (gid < NGID)
	667	return (0);
	668	setgrent();
	669	while (gr = getgrent()) {
	670	if (gr->gr_gid != gid)
	671	continue;
	672	outrangegid = gr->gr_gid;
93b9cc72	673	SCPYN(outrangegroup, gr->gr_name);
adce3e94 KM	674	endgrent();
	675	return (outrangegroup);
	676	}
	677	endgrent();
547b0031	678	return (0);
adce3e94	679	}
547b0031 BJ	680	if (init == 0)
	681	setgrent(), init = 1;
	682	while (gr = getgrent()) {
adce3e94 KM	683	if (gr->gr_gid < 0 \|\| gr->gr_gid >= NGID) {
	684	if (gr->gr_gid == gid) {
	685	outrangegid = gr->gr_gid;
93b9cc72	686	SCPYN(outrangegroup, gr->gr_name);
adce3e94 KM	687	return (outrangegroup);
adce3e94 KM	688	}
547b0031	689	continue;
adce3e94	690	}
547b0031 BJ	691	if (groups[gr->gr_gid][0])
547b0031 BJ	692	continue;
93b9cc72	693	SCPYN(groups[gr->gr_gid], gr->gr_name);
ed1aa7ae	694	if (gr->gr_gid == gid)
547b0031	695	return (&groups[gid][0]);
547b0031 BJ	696	}
547b0031 BJ	697	init = 2;
ed1aa7ae	698	goto rescan;
547b0031	699	}