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[unix-history] / usr / src / bin / ls / print.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.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char sccsid[] = "@(#)print.c 5.16 (Berkeley) %G%";
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
#include <utmp.h>
#include <tzfile.h>
#include "ls.h"
printscol(stats, num)
register LS *stats;
register int num;
{
for (; num--; ++stats) {
(void)printaname(stats);
(void)putchar('\n');
}
}
printlong(stats, num)
LS *stats;
register int num;
{
if (f_total)
(void)printf("total %lu\n", f_kblocks ?
howmany(stats[0].lstat.st_btotal, 2) :
stats[0].lstat.st_btotal);
for (; num--; ++stats) {
if (f_inode)
(void)printf("%6lu ", stats->lstat.st_ino);
if (f_size)
(void)printf("%4ld ", f_kblocks ?
howmany(stats->lstat.st_blocks, 2) :
stats->lstat.st_blocks);
printperms(stats->lstat.st_mode);
(void)printf("%3u ", stats->lstat.st_nlink);
printowner(stats->lstat.st_uid);
if (f_group)
printgrp(stats->lstat.st_gid);
if (S_ISCHR(stats->lstat.st_mode) ||
S_ISBLK(stats->lstat.st_mode))
(void)printf("%3d, %3d ", major(stats->lstat.st_rdev),
minor(stats->lstat.st_rdev));
else
(void)printf("%8ld ", stats->lstat.st_size);
if (f_accesstime)
printtime(stats->lstat.st_atime);
else if (f_statustime)
printtime(stats->lstat.st_ctime);
else
printtime(stats->lstat.st_mtime);
(void)printf("%s", stats->name);
if (f_type)
(void)printtype(stats->lstat.st_mode);
if (S_ISLNK(stats->lstat.st_mode))
printlink(stats->name);
(void)putchar('\n');
}
}
#define TAB 8
printcol(stats, num)
LS *stats;
int num;
{
extern int termwidth;
register int base, chcnt, cnt, col, colwidth;
int endcol, numcols, numrows, row;
colwidth = stats[0].lstat.st_maxlen;
if (f_inode)
colwidth += 6;
if (f_size)
colwidth += 5;
if (f_type)
colwidth += 1;
colwidth = (colwidth + TAB) & ~(TAB - 1);
numcols = termwidth / colwidth;
numrows = num / numcols;
if (num % numcols)
++numrows;
if (f_size && f_total)
(void)printf("total %lu\n", f_kblocks ?
howmany(stats[0].lstat.st_btotal, 2) :
stats[0].lstat.st_btotal);
for (row = 0; row < numrows; ++row) {
endcol = colwidth;
for (base = row, chcnt = col = 0; col < numcols; ++col) {
chcnt += printaname(stats + base);
if ((base += numrows) >= num)
break;
while ((cnt = (chcnt + TAB & ~(TAB - 1))) <= endcol) {
(void)putchar('\t');
chcnt = cnt;
}
endcol += colwidth;
}
putchar('\n');
}
}
/*
* print [inode] [size] name
* return # of characters printed, no trailing characters
*/
printaname(lp)
LS *lp;
{
int chcnt;
chcnt = 0;
if (f_inode)
chcnt += printf("%5lu ", lp->lstat.st_ino);
if (f_size)
chcnt += printf("%4ld ", f_kblocks ?
howmany(lp->lstat.st_blocks, 2) : lp->lstat.st_blocks);
chcnt += printf("%s", lp->name);
if (f_type)
chcnt += printtype(lp->lstat.st_mode);
return(chcnt);
}
#define NCACHE 64 /* power of 2 */
#define LSMASK NCACHE - 1 /* bits to store with */
printowner(uid)
uid_t uid;
{
static struct ncache {
uid_t uid;
char name[UT_NAMESIZE];
} c_uid[NCACHE];
register struct passwd *pw;
register struct ncache *cp;
cp = c_uid + (uid & LSMASK);
if (cp->uid != uid || !*cp->name) {
/* if can't find owner, print out number instead */
if (!(pw = getpwuid(uid))) {
(void)printf("%-*u ", UT_NAMESIZE, uid);
return;
}
cp->uid = uid;
(void)strncpy(cp->name, pw->pw_name, UT_NAMESIZE);
}
(void)printf("%-*.*s ", UT_NAMESIZE, UT_NAMESIZE, cp->name);
}
printgrp(gid)
gid_t gid;
{
static struct ncache {
gid_t gid;
char name[UT_NAMESIZE];
} c_gid[NCACHE];
register struct group *gr;
register struct ncache *cp;
cp = c_gid + (gid & LSMASK);
if (cp->gid != gid || !*cp->name) {
/* can't find group, print out number instead */
if (!(gr = getgrgid(gid))) {
(void)printf("%-*u ", UT_NAMESIZE, gid);
return;
}
cp->gid = gid;
(void)strncpy(cp->name, gr->gr_name, UT_NAMESIZE);
}
(void)printf("%-*.*s ", UT_NAMESIZE, UT_NAMESIZE, cp->name);
}
printtime(ftime)
time_t ftime;
{
int i;
char *longstring, *ctime();
time_t time();
longstring = ctime((long *)&ftime);
for (i = 4; i < 11; ++i)
(void)putchar(longstring[i]);
#define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY)
if (ftime + SIXMONTHS > time((time_t *)NULL))
for (i = 11; i < 16; ++i)
(void)putchar(longstring[i]);
else {
(void)putchar(' ');
for (i = 20; i < 24; ++i)
(void)putchar(longstring[i]);
}
(void)putchar(' ');
}
/*
* do the permissions printing, passed the mode
*/
printperms(mode)
mode_t mode;
{
/* print type */
switch (mode & S_IFMT) {
case S_IFDIR: /* directory */
(void)putchar('d');
break;
case S_IFCHR: /* character special */
(void)putchar('c');
break;
case S_IFBLK: /* block special */
(void)putchar('b');
break;
case S_IFREG: /* regular */
(void)putchar('-');
break;
case S_IFLNK: /* symbolic link */
(void)putchar('l');
break;
case S_IFSOCK: /* socket */
(void)putchar('s');
break;
#ifdef S_IFIFO
case S_IFIFO: /* fifo */
(void)putchar('p');
break;
#endif
default: /* unknown */
(void)putchar('?');
break;
}
/* usr */
if (mode & S_IRUSR)
(void)putchar('r');
else
(void)putchar('-');
if (mode & S_IWUSR)
(void)putchar('w');
else
(void)putchar('-');
switch (mode & (S_IXUSR | S_ISUID)) {
case 0:
(void)putchar('-');
break;
case S_IXUSR:
(void)putchar('x');
break;
case S_ISUID:
(void)putchar('S');
break;
case S_IXUSR | S_ISUID:
(void)putchar('s');
break;
}
/* group */
if (mode & S_IRGRP)
(void)putchar('r');
else
(void)putchar('-');
if (mode & S_IWGRP)
(void)putchar('w');
else
(void)putchar('-');
switch (mode & (S_IXGRP | S_ISGID)) {
case 0:
(void)putchar('-');
break;
case S_IXGRP:
(void)putchar('x');
break;
case S_ISGID:
(void)putchar('S');
break;
case S_IXGRP | S_ISGID:
(void)putchar('s');
break;
}
/* other */
if (mode & S_IROTH)
(void)putchar('r');
else
(void)putchar('-');
if (mode & S_IWOTH)
(void)putchar('w');
else
(void)putchar('-');
switch (mode & (S_IXOTH | S_ISVTX)) {
case 0:
(void)putchar('-');
break;
case S_IXOTH:
(void)putchar('x');
break;
case S_ISVTX:
(void)putchar('T');
break;
case S_IXOTH | S_ISVTX:
(void)putchar('t');
break;
}
(void)putchar(' ');
}
printtype(mode)
mode_t mode;
{
switch(mode & S_IFMT) {
case S_IFDIR:
(void)putchar('/');
return(1);
case S_IFLNK:
(void)putchar('@');
return(1);
case S_IFSOCK:
(void)putchar('=');
return(1);
}
if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
(void)putchar('*');
return(1);
}
return(0);
}
printlink(name)
char *name;
{
int lnklen;
char path[MAXPATHLEN + 1], *strerror();
if ((lnklen = readlink(name, path, MAXPATHLEN)) == -1) {
(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
return;
}
path[lnklen] = '\0';
(void)printf(" -> %s", path);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.