print.c revision 106371
1/* 2 * Copyright (c) 1989, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Michael Fischbein. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#if 0 38#ifndef lint 39static char sccsid[] = "@(#)print.c 8.4 (Berkeley) 4/17/94"; 40#endif /* not lint */ 41#endif 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: head/bin/ls/print.c 106371 2002-11-03 07:29:08Z tjr $"); 44 45#include <sys/param.h> 46#include <sys/stat.h> 47#include <sys/acl.h> 48 49#include <err.h> 50#include <errno.h> 51#include <fts.h> 52#include <math.h> 53#include <langinfo.h> 54#include <stdio.h> 55#include <stdlib.h> 56#include <string.h> 57#include <time.h> 58#include <unistd.h> 59#ifdef COLORLS 60#include <ctype.h> 61#include <termcap.h> 62#include <signal.h> 63#endif 64 65#include "ls.h" 66#include "extern.h" 67 68static int printaname(FTSENT *, u_long, u_long); 69static void printlink(const FTSENT *); 70static void printtime(time_t); 71static int printtype(u_int); 72static void printsize(size_t, off_t); 73#ifdef COLORLS 74static void endcolor(int); 75static int colortype(mode_t); 76#endif 77static void aclmode(char *, FTSENT *, int *); 78 79#define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT) 80 81#define KILO_SZ(n) (n) 82#define MEGA_SZ(n) ((n) * (n)) 83#define GIGA_SZ(n) ((n) * (n) * (n)) 84#define TERA_SZ(n) ((n) * (n) * (n) * (n)) 85#define PETA_SZ(n) ((n) * (n) * (n) * (n) * (n)) 86 87#define KILO_2_SZ (KILO_SZ(1024ULL)) 88#define MEGA_2_SZ (MEGA_SZ(1024ULL)) 89#define GIGA_2_SZ (GIGA_SZ(1024ULL)) 90#define TERA_2_SZ (TERA_SZ(1024ULL)) 91#define PETA_2_SZ (PETA_SZ(1024ULL)) 92 93static unsigned long long vals_base2[] = {1, KILO_2_SZ, MEGA_2_SZ, GIGA_2_SZ, TERA_2_SZ, PETA_2_SZ}; 94 95typedef enum { 96 NONE, KILO, MEGA, GIGA, TERA, PETA, UNIT_MAX 97} unit_t; 98static unit_t unit_adjust(double *); 99 100static unit_t unitp[] = {NONE, KILO, MEGA, GIGA, TERA, PETA}; 101 102#ifdef COLORLS 103/* Most of these are taken from <sys/stat.h> */ 104typedef enum Colors { 105 C_DIR, /* directory */ 106 C_LNK, /* symbolic link */ 107 C_SOCK, /* socket */ 108 C_FIFO, /* pipe */ 109 C_EXEC, /* executable */ 110 C_BLK, /* block special */ 111 C_CHR, /* character special */ 112 C_SUID, /* setuid executable */ 113 C_SGID, /* setgid executable */ 114 C_WSDIR, /* directory writeble to others, with sticky 115 * bit */ 116 C_WDIR, /* directory writeble to others, without 117 * sticky bit */ 118 C_NUMCOLORS /* just a place-holder */ 119} Colors; 120 121static const char *defcolors = "exfxcxdxbxegedabagacad"; 122 123/* colors for file types */ 124static struct { 125 int num[2]; 126 int bold; 127} colors[C_NUMCOLORS]; 128#endif 129 130void 131printscol(DISPLAY *dp) 132{ 133 FTSENT *p; 134 135 for (p = dp->list; p; p = p->fts_link) { 136 if (IS_NOPRINT(p)) 137 continue; 138 (void)printaname(p, dp->s_inode, dp->s_block); 139 (void)putchar('\n'); 140 } 141} 142 143/* 144 * print name in current style 145 */ 146int 147printname(const char *name) 148{ 149 if (f_octal || f_octal_escape) 150 return prn_octal(name); 151 else if (f_nonprint) 152 return prn_printable(name); 153 else 154 return printf("%s", name); 155} 156 157void 158printlong(DISPLAY *dp) 159{ 160 struct stat *sp; 161 FTSENT *p; 162 NAMES *np; 163 char buf[20]; 164#ifdef COLORLS 165 int color_printed = 0; 166#endif 167 int haveacls; 168 dev_t prevdev; 169 170 if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) 171 (void)printf("total %lu\n", howmany(dp->btotal, blocksize)); 172 173 haveacls = 1; 174 prevdev = (dev_t)-1; 175 for (p = dp->list; p; p = p->fts_link) { 176 if (IS_NOPRINT(p)) 177 continue; 178 sp = p->fts_statp; 179 if (f_inode) 180 (void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino); 181 if (f_size) 182 (void)printf("%*lld ", 183 dp->s_block, howmany(sp->st_blocks, blocksize)); 184 strmode(sp->st_mode, buf); 185 /* 186 * Cache whether or not the filesystem supports ACL's to 187 * avoid expensive syscalls. Try again when we change devices. 188 */ 189 if (haveacls || sp->st_dev != prevdev) { 190 aclmode(buf, p, &haveacls); 191 prevdev = sp->st_dev; 192 } 193 np = p->fts_pointer; 194 (void)printf("%s %*u %-*s %-*s ", buf, dp->s_nlink, 195 sp->st_nlink, dp->s_user, np->user, dp->s_group, 196 np->group); 197 if (f_flags) 198 (void)printf("%-*s ", dp->s_flags, np->flags); 199 if (f_label) 200 (void)printf("%-*s ", dp->s_label, np->label); 201 if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) 202 if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0) 203 (void)printf("%3d, 0x%08x ", 204 major(sp->st_rdev), 205 (u_int)minor(sp->st_rdev)); 206 else 207 (void)printf("%3d, %3d ", 208 major(sp->st_rdev), minor(sp->st_rdev)); 209 else if (dp->bcfile) 210 (void)printf("%*s%*lld ", 211 8 - dp->s_size, "", dp->s_size, sp->st_size); 212 else 213 printsize(dp->s_size, sp->st_size); 214 if (f_accesstime) 215 printtime(sp->st_atime); 216 else if (f_statustime) 217 printtime(sp->st_ctime); 218 else 219 printtime(sp->st_mtime); 220#ifdef COLORLS 221 if (f_color) 222 color_printed = colortype(sp->st_mode); 223#endif 224 (void)printname(p->fts_name); 225#ifdef COLORLS 226 if (f_color && color_printed) 227 endcolor(0); 228#endif 229 if (f_type) 230 (void)printtype(sp->st_mode); 231 if (S_ISLNK(sp->st_mode)) 232 printlink(p); 233 (void)putchar('\n'); 234 } 235} 236 237void 238printstream(DISPLAY *dp) 239{ 240 FTSENT *p; 241 extern int termwidth; 242 int chcnt; 243 244 for (p = dp->list, chcnt = 0; p; p = p->fts_link) { 245 if (p->fts_number == NO_PRINT) 246 continue; 247 if (strlen(p->fts_name) + chcnt + 248 (p->fts_link ? 2 : 0) >= (unsigned)termwidth) { 249 putchar('\n'); 250 chcnt = 0; 251 } 252 chcnt += printaname(p, dp->s_inode, dp->s_block); 253 if (p->fts_link) { 254 printf(", "); 255 chcnt += 2; 256 } 257 } 258 if (chcnt) 259 putchar('\n'); 260} 261 262void 263printcol(DISPLAY *dp) 264{ 265 extern int termwidth; 266 static FTSENT **array; 267 static int lastentries = -1; 268 FTSENT *p; 269 int base; 270 int chcnt; 271 int cnt; 272 int col; 273 int colwidth; 274 int endcol; 275 int num; 276 int numcols; 277 int numrows; 278 int row; 279 int tabwidth; 280 281 if (f_notabs) 282 tabwidth = 1; 283 else 284 tabwidth = 8; 285 286 /* 287 * Have to do random access in the linked list -- build a table 288 * of pointers. 289 */ 290 if (dp->entries > lastentries) { 291 lastentries = dp->entries; 292 if ((array = 293 realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) { 294 warn(NULL); 295 printscol(dp); 296 } 297 } 298 for (p = dp->list, num = 0; p; p = p->fts_link) 299 if (p->fts_number != NO_PRINT) 300 array[num++] = p; 301 302 colwidth = dp->maxlen; 303 if (f_inode) 304 colwidth += dp->s_inode + 1; 305 if (f_size) 306 colwidth += dp->s_block + 1; 307 if (f_type) 308 colwidth += 1; 309 310 colwidth = (colwidth + tabwidth) & ~(tabwidth - 1); 311 if (termwidth < 2 * colwidth) { 312 printscol(dp); 313 return; 314 } 315 numcols = termwidth / colwidth; 316 numrows = num / numcols; 317 if (num % numcols) 318 ++numrows; 319 320 if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) 321 (void)printf("total %lu\n", howmany(dp->btotal, blocksize)); 322 323 base = 0; 324 for (row = 0; row < numrows; ++row) { 325 endcol = colwidth; 326 if (!f_sortacross) 327 base = row; 328 for (col = 0, chcnt = 0; col < numcols; ++col) { 329 chcnt += printaname(array[base], dp->s_inode, 330 dp->s_block); 331 if (f_sortacross) 332 base++; 333 else 334 base += numrows; 335 if (base >= num) 336 break; 337 while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1))) 338 <= endcol) { 339 if (f_sortacross && col + 1 >= numcols) 340 break; 341 (void)putchar(f_notabs ? ' ' : '\t'); 342 chcnt = cnt; 343 } 344 endcol += colwidth; 345 } 346 (void)putchar('\n'); 347 } 348} 349 350/* 351 * print [inode] [size] name 352 * return # of characters printed, no trailing characters. 353 */ 354static int 355printaname(FTSENT *p, u_long inodefield, u_long sizefield) 356{ 357 struct stat *sp; 358 int chcnt; 359#ifdef COLORLS 360 int color_printed = 0; 361#endif 362 363 sp = p->fts_statp; 364 chcnt = 0; 365 if (f_inode) 366 chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino); 367 if (f_size) 368 chcnt += printf("%*lld ", 369 (int)sizefield, howmany(sp->st_blocks, blocksize)); 370#ifdef COLORLS 371 if (f_color) 372 color_printed = colortype(sp->st_mode); 373#endif 374 chcnt += printname(p->fts_name); 375#ifdef COLORLS 376 if (f_color && color_printed) 377 endcolor(0); 378#endif 379 if (f_type) 380 chcnt += printtype(sp->st_mode); 381 return (chcnt); 382} 383 384static void 385printtime(time_t ftime) 386{ 387 char longstring[80]; 388 static time_t now; 389 const char *format; 390 static int d_first = -1; 391 392 if (d_first < 0) 393 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 394 if (now == 0) 395 now = time(NULL); 396 397#define SIXMONTHS ((365 / 2) * 86400) 398 if (f_sectime) 399 /* mmm dd hh:mm:ss yyyy || dd mmm hh:mm:ss yyyy */ 400 format = d_first ? "%e %b %T %Y " : "%b %e %T %Y "; 401 else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS) 402 /* mmm dd hh:mm || dd mmm hh:mm */ 403 format = d_first ? "%e %b %R " : "%b %e %R "; 404 else 405 /* mmm dd yyyy || dd mmm yyyy */ 406 format = d_first ? "%e %b %Y " : "%b %e %Y "; 407 strftime(longstring, sizeof(longstring), format, localtime(&ftime)); 408 fputs(longstring, stdout); 409} 410 411static int 412printtype(u_int mode) 413{ 414 415 if (f_slash) { 416 if ((mode & S_IFMT) == S_IFDIR) { 417 (void)putchar('/'); 418 return (1); 419 } 420 return (0); 421 } 422 423 switch (mode & S_IFMT) { 424 case S_IFDIR: 425 (void)putchar('/'); 426 return (1); 427 case S_IFIFO: 428 (void)putchar('|'); 429 return (1); 430 case S_IFLNK: 431 (void)putchar('@'); 432 return (1); 433 case S_IFSOCK: 434 (void)putchar('='); 435 return (1); 436 case S_IFWHT: 437 (void)putchar('%'); 438 return (1); 439 default: 440 break; 441 } 442 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 443 (void)putchar('*'); 444 return (1); 445 } 446 return (0); 447} 448 449#ifdef COLORLS 450static int 451putch(int c) 452{ 453 (void)putchar(c); 454 return 0; 455} 456 457static int 458writech(int c) 459{ 460 char tmp = c; 461 462 (void)write(STDOUT_FILENO, &tmp, 1); 463 return 0; 464} 465 466static void 467printcolor(Colors c) 468{ 469 char *ansiseq; 470 471 if (colors[c].bold) 472 tputs(enter_bold, 1, putch); 473 474 if (colors[c].num[0] != -1) { 475 ansiseq = tgoto(ansi_fgcol, 0, colors[c].num[0]); 476 if (ansiseq) 477 tputs(ansiseq, 1, putch); 478 } 479 if (colors[c].num[1] != -1) { 480 ansiseq = tgoto(ansi_bgcol, 0, colors[c].num[1]); 481 if (ansiseq) 482 tputs(ansiseq, 1, putch); 483 } 484} 485 486static void 487endcolor(int sig) 488{ 489 tputs(ansi_coloff, 1, sig ? writech : putch); 490 tputs(attrs_off, 1, sig ? writech : putch); 491} 492 493static int 494colortype(mode_t mode) 495{ 496 switch (mode & S_IFMT) { 497 case S_IFDIR: 498 if (mode & S_IWOTH) 499 if (mode & S_ISTXT) 500 printcolor(C_WSDIR); 501 else 502 printcolor(C_WDIR); 503 else 504 printcolor(C_DIR); 505 return (1); 506 case S_IFLNK: 507 printcolor(C_LNK); 508 return (1); 509 case S_IFSOCK: 510 printcolor(C_SOCK); 511 return (1); 512 case S_IFIFO: 513 printcolor(C_FIFO); 514 return (1); 515 case S_IFBLK: 516 printcolor(C_BLK); 517 return (1); 518 case S_IFCHR: 519 printcolor(C_CHR); 520 return (1); 521 } 522 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 523 if (mode & S_ISUID) 524 printcolor(C_SUID); 525 else if (mode & S_ISGID) 526 printcolor(C_SGID); 527 else 528 printcolor(C_EXEC); 529 return (1); 530 } 531 return (0); 532} 533 534void 535parsecolors(const char *cs) 536{ 537 int i; 538 int j; 539 size_t len; 540 char c[2]; 541 short legacy_warn = 0; 542 543 if (cs == NULL) 544 cs = ""; /* LSCOLORS not set */ 545 len = strlen(cs); 546 for (i = 0; i < C_NUMCOLORS; i++) { 547 colors[i].bold = 0; 548 549 if (len <= 2 * i) { 550 c[0] = defcolors[2 * i]; 551 c[1] = defcolors[2 * i + 1]; 552 } else { 553 c[0] = cs[2 * i]; 554 c[1] = cs[2 * i + 1]; 555 } 556 for (j = 0; j < 2; j++) { 557 /* Legacy colours used 0-7 */ 558 if (c[j] >= '0' && c[j] <= '7') { 559 colors[i].num[j] = c[j] - '0'; 560 if (!legacy_warn) { 561 fprintf(stderr, 562 "warn: LSCOLORS should use " 563 "characters a-h instead of 0-9 (" 564 "see the manual page)\n"); 565 } 566 legacy_warn = 1; 567 } else if (c[j] >= 'a' && c[j] <= 'h') 568 colors[i].num[j] = c[j] - 'a'; 569 else if (c[j] >= 'A' && c[j] <= 'H') { 570 colors[i].num[j] = c[j] - 'A'; 571 colors[i].bold = 1; 572 } else if (tolower((unsigned char)c[j] == 'x')) 573 colors[i].num[j] = -1; 574 else { 575 fprintf(stderr, 576 "error: invalid character '%c' in LSCOLORS" 577 " env var\n", c[j]); 578 colors[i].num[j] = -1; 579 } 580 } 581 } 582} 583 584void 585colorquit(int sig) 586{ 587 endcolor(sig); 588 589 (void)signal(sig, SIG_DFL); 590 (void)kill(getpid(), sig); 591} 592 593#endif /* COLORLS */ 594 595static void 596printlink(const FTSENT *p) 597{ 598 int lnklen; 599 char name[MAXPATHLEN + 1]; 600 char path[MAXPATHLEN + 1]; 601 602 if (p->fts_level == FTS_ROOTLEVEL) 603 (void)snprintf(name, sizeof(name), "%s", p->fts_name); 604 else 605 (void)snprintf(name, sizeof(name), 606 "%s/%s", p->fts_parent->fts_accpath, p->fts_name); 607 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 608 (void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno)); 609 return; 610 } 611 path[lnklen] = '\0'; 612 (void)printf(" -> "); 613 (void)printname(path); 614} 615 616static void 617printsize(size_t width, off_t bytes) 618{ 619 double dbytes; 620 unit_t unit; 621 622 if (f_humanval) { 623 dbytes = bytes; 624 unit = unit_adjust(&dbytes); 625 626 if (dbytes == 0) 627 (void)printf("%*s ", width, "0B"); 628 else 629 (void)printf("%*.*f%c ", width - 1, dbytes > 10 ? 0 : 1, 630 dbytes, "BKMGTPE"[unit]); 631 } else 632 (void)printf("%*lld ", width, bytes); 633} 634 635/* 636 * Output in "human-readable" format. Uses 3 digits max and puts 637 * unit suffixes at the end. Makes output compact and easy to read, 638 * especially on huge disks. 639 * 640 */ 641static unit_t 642unit_adjust(double *val) 643{ 644 double abval; 645 unit_t unit; 646 u_int unit_sz; 647 648 abval = fabs(*val); 649 650 unit_sz = abval ? (u_int)ilogb(abval) / 10 : 0; 651 652 if (unit_sz >= (u_int)UNIT_MAX) { 653 unit = NONE; 654 } else { 655 unit = unitp[unit_sz]; 656 *val /= (double)vals_base2[unit_sz]; 657 } 658 659 return (unit); 660} 661 662static void 663aclmode(char *buf, FTSENT *p, int *haveacls) 664{ 665 char name[MAXPATHLEN + 1]; 666 int entries, ret; 667 acl_t facl; 668 acl_entry_t ae; 669 670 /* 671 * Add a + after the standard rwxrwxrwx mode if the file has an 672 * extended ACL. strmode() reserves space at the end of the string. 673 */ 674 if (p->fts_level == FTS_ROOTLEVEL) 675 snprintf(name, sizeof(name), "%s", p->fts_name); 676 else 677 snprintf(name, sizeof(name), "%s/%s", 678 p->fts_parent->fts_accpath, p->fts_name); 679 if ((ret = pathconf(name, _PC_ACL_EXTENDED)) <= 0) { 680 if (ret < 0 && errno != EINVAL) 681 warn("%s", name); 682 else 683 *haveacls = 0; 684 return; 685 } 686 *haveacls = 1; 687 if ((facl = acl_get_file(name, ACL_TYPE_ACCESS)) != NULL) { 688 if (acl_get_entry(facl, ACL_FIRST_ENTRY, &ae) == 1) { 689 entries = 0; 690 do 691 entries++; 692 while (acl_get_entry(facl, ACL_NEXT_ENTRY, &ae) == 1); 693 if (entries != 3) 694 buf[10] = '+'; 695 } 696 acl_free(facl); 697 } else 698 warn("%s", name); 699} 700