1 /* $OpenBSD: print.c,v 1.41 2024/03/27 14:44:52 millert Exp $ */
2 /* $NetBSD: print.c,v 1.15 1996/12/11 03:25:39 thorpej Exp $ */
3
4 /*
5 * Copyright (c) 1989, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Michael Fischbein.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include <sys/types.h>
37 #include <sys/stat.h>
38
39 #include <err.h>
40 #include <errno.h>
41 #include <fts.h>
42 #include <grp.h>
43 #include <pwd.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <time.h>
48 #include <unistd.h>
49 #include <limits.h>
50 #include <util.h>
51
52 #include "ls.h"
53 #include "extern.h"
54
55 static int printaname(FTSENT *, int, int);
56 static void printlink(FTSENT *);
57 static void printsize(int, off_t);
58 static void printtime(time_t);
59 static int printtype(mode_t);
60 static int compute_columns(DISPLAY *, int *);
61
62 #define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT)
63
64 #define DATELEN 64
65
66 #define SECSPERDAY (24 * 60 * 60)
67 #define SIXMONTHS (SECSPERDAY * 365 / 2)
68
69 void
printscol(DISPLAY * dp)70 printscol(DISPLAY *dp)
71 {
72 FTSENT *p;
73
74 for (p = dp->list; p; p = p->fts_link) {
75 if (IS_NOPRINT(p))
76 continue;
77 (void)printaname(p, dp->s_inode, dp->s_block);
78 (void)putchar('\n');
79 }
80 }
81
82 void
printlong(DISPLAY * dp)83 printlong(DISPLAY *dp)
84 {
85 struct stat *sp;
86 FTSENT *p;
87 NAMES *np;
88 char buf[20];
89
90 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) &&
91 (f_longform || f_size))
92 (void)printf("total %llu\n", howmany(dp->btotal, blocksize));
93
94 for (p = dp->list; p; p = p->fts_link) {
95 if (IS_NOPRINT(p))
96 continue;
97 sp = p->fts_statp;
98 if (f_inode)
99 (void)printf("%*llu ", dp->s_inode,
100 (unsigned long long)sp->st_ino);
101 if (f_size)
102 (void)printf("%*lld ", dp->s_block,
103 howmany((long long)sp->st_blocks, blocksize));
104 (void)strmode(sp->st_mode, buf);
105 np = p->fts_pointer;
106 (void)printf("%s %*u ", buf, dp->s_nlink, sp->st_nlink);
107 if (!f_grouponly)
108 (void)printf("%-*s ", dp->s_user, np->user);
109 (void)printf("%-*s ", dp->s_group, np->group);
110 if (f_flags)
111 (void)printf("%-*s ", dp->s_flags, np->flags);
112 if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
113 (void)printf("%*u, %*u ",
114 dp->s_major, major(sp->st_rdev),
115 dp->s_minor, minor(sp->st_rdev));
116 else
117 printsize(dp->s_size, sp->st_size);
118 if (f_accesstime)
119 printtime(sp->st_atime);
120 else if (f_statustime)
121 printtime(sp->st_ctime);
122 else
123 printtime(sp->st_mtime);
124 (void)mbsprint(p->fts_name, 1);
125 if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
126 (void)printtype(sp->st_mode);
127 if (S_ISLNK(sp->st_mode))
128 printlink(p);
129 (void)putchar('\n');
130 }
131 }
132
133 static int
compute_columns(DISPLAY * dp,int * pnum)134 compute_columns(DISPLAY *dp, int *pnum)
135 {
136 int colwidth;
137 extern int termwidth;
138 int mywidth;
139
140 colwidth = dp->maxlen;
141 if (f_inode)
142 colwidth += dp->s_inode + 1;
143 if (f_size)
144 colwidth += dp->s_block + 1;
145 if (f_type || f_typedir)
146 colwidth += 1;
147
148 colwidth += 1;
149 mywidth = termwidth + 1; /* no extra space for last column */
150
151 if (mywidth < 2 * colwidth) {
152 printscol(dp);
153 return (0);
154 }
155
156 *pnum = mywidth / colwidth;
157 return (mywidth / *pnum); /* spread out if possible */
158 }
159
160 void
printcol(DISPLAY * dp)161 printcol(DISPLAY *dp)
162 {
163 static FTSENT **array;
164 static int lastentries = -1;
165 FTSENT *p;
166 int base, chcnt, col, colwidth, num;
167 int numcols, numrows, row;
168
169 if ((colwidth = compute_columns(dp, &numcols)) == 0)
170 return;
171 /*
172 * Have to do random access in the linked list -- build a table
173 * of pointers.
174 */
175 if (dp->entries > lastentries) {
176 FTSENT **a;
177
178 if ((a = reallocarray(array, dp->entries, sizeof(FTSENT *))) ==
179 NULL) {
180 free(array);
181 array = NULL;
182 dp->entries = 0;
183 lastentries = -1;
184 warn(NULL);
185 printscol(dp);
186 return;
187 }
188 lastentries = dp->entries;
189 array = a;
190 }
191 for (p = dp->list, num = 0; p; p = p->fts_link)
192 if (p->fts_number != NO_PRINT)
193 array[num++] = p;
194
195 numrows = num / numcols;
196 if (num % numcols)
197 ++numrows;
198
199 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) &&
200 (f_longform || f_size))
201 (void)printf("total %llu\n", howmany(dp->btotal, blocksize));
202 for (row = 0; row < numrows; ++row) {
203 for (base = row, col = 0;;) {
204 chcnt = printaname(array[base], dp->s_inode, dp->s_block);
205 if ((base += numrows) >= num)
206 break;
207 if (++col == numcols)
208 break;
209 while (chcnt++ < colwidth)
210 putchar(' ');
211 }
212 (void)putchar('\n');
213 }
214 }
215
216 /*
217 * print [inode] [size] name
218 * return # of characters printed, no trailing characters.
219 */
220 static int
printaname(FTSENT * p,int inodefield,int sizefield)221 printaname(FTSENT *p, int inodefield, int sizefield)
222 {
223 struct stat *sp;
224 int chcnt;
225
226 sp = p->fts_statp;
227 chcnt = 0;
228 if (f_inode)
229 chcnt += printf("%*llu ", inodefield,
230 (unsigned long long)sp->st_ino);
231 if (f_size)
232 chcnt += printf("%*lld ", sizefield,
233 howmany((long long)sp->st_blocks, blocksize));
234 chcnt += mbsprint(p->fts_name, 1);
235 if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
236 chcnt += printtype(sp->st_mode);
237 return (chcnt);
238 }
239
240 static void
printtime(time_t ftime)241 printtime(time_t ftime)
242 {
243 char f_date[DATELEN];
244 struct tm *tm;
245 static time_t now;
246 static int now_set = 0;
247
248 if (! now_set) {
249 now = time(NULL);
250 now_set = 1;
251 }
252
253 /*
254 * convert time to string, and print
255 */
256 if ((tm = localtime(&ftime)) == NULL) {
257 /* Invalid time stamp, just display the epoch. */
258 ftime = 0;
259 tm = localtime(&ftime);
260 }
261 if (strftime(f_date, sizeof(f_date), f_sectime ? "%b %e %H:%M:%S %Y" :
262 (ftime <= now - SIXMONTHS || ftime > now) ? "%b %e %Y" :
263 "%b %e %H:%M", tm) == 0)
264 f_date[0] = '\0';
265
266 printf("%s ", f_date);
267 }
268
269 void
printacol(DISPLAY * dp)270 printacol(DISPLAY *dp)
271 {
272 FTSENT *p;
273 int chcnt, col, colwidth;
274 int numcols;
275
276 if ( (colwidth = compute_columns(dp, &numcols)) == 0)
277 return;
278
279 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) &&
280 (f_longform || f_size))
281 (void)printf("total %llu\n", howmany(dp->btotal, blocksize));
282 col = 0;
283 for (p = dp->list; p; p = p->fts_link) {
284 if (IS_NOPRINT(p))
285 continue;
286 if (col >= numcols) {
287 col = 0;
288 (void)putchar('\n');
289 }
290 chcnt = printaname(p, dp->s_inode, dp->s_block);
291 col++;
292 if (col < numcols)
293 while (chcnt++ < colwidth)
294 (void)putchar(' ');
295 }
296 (void)putchar('\n');
297 }
298
299 void
printstream(DISPLAY * dp)300 printstream(DISPLAY *dp)
301 {
302 extern int termwidth;
303 FTSENT *p;
304 int col;
305 int extwidth;
306
307 extwidth = 0;
308 if (f_inode)
309 extwidth += dp->s_inode + 1;
310 if (f_size)
311 extwidth += dp->s_block + 1;
312 if (f_type)
313 extwidth += 1;
314
315 for (col = 0, p = dp->list; p != NULL; p = p->fts_link) {
316 if (IS_NOPRINT(p))
317 continue;
318 if (col > 0) {
319 (void)putchar(','), col++;
320 if (col + 1 + extwidth + mbsprint(p->fts_name, 0) >=
321 termwidth)
322 (void)putchar('\n'), col = 0;
323 else
324 (void)putchar(' '), col++;
325 }
326 col += printaname(p, dp->s_inode, dp->s_block);
327 }
328 (void)putchar('\n');
329 }
330
331 static int
printtype(mode_t mode)332 printtype(mode_t mode)
333 {
334 switch (mode & S_IFMT) {
335 case S_IFDIR:
336 (void)putchar('/');
337 return (1);
338 case S_IFIFO:
339 (void)putchar('|');
340 return (1);
341 case S_IFLNK:
342 (void)putchar('@');
343 return (1);
344 case S_IFSOCK:
345 (void)putchar('=');
346 return (1);
347 }
348 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
349 (void)putchar('*');
350 return (1);
351 }
352 return (0);
353 }
354
355 static void
printlink(FTSENT * p)356 printlink(FTSENT *p)
357 {
358 int lnklen;
359 char name[PATH_MAX], path[PATH_MAX];
360
361 if (p->fts_level == FTS_ROOTLEVEL)
362 (void)snprintf(name, sizeof(name), "%s", p->fts_name);
363 else
364 (void)snprintf(name, sizeof(name),
365 "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
366 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
367 (void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
368 return;
369 }
370 path[lnklen] = '\0';
371 (void)printf(" -> ");
372 (void)mbsprint(path, 1);
373 }
374
375 static void
printsize(int width,off_t bytes)376 printsize(int width, off_t bytes)
377 {
378 char ret[FMT_SCALED_STRSIZE];
379
380 if ((f_humanval) && (fmt_scaled(bytes, ret) != -1)) {
381 (void)printf("%*s ", width, ret);
382 return;
383 }
384 (void)printf("%*lld ", width, (long long)bytes);
385 }
386