mkdir.c revision 40535
11556Srgrimes/* 21556Srgrimes * Copyright (c) 1983, 1992, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * Redistribution and use in source and binary forms, with or without 61556Srgrimes * modification, are permitted provided that the following conditions 71556Srgrimes * are met: 81556Srgrimes * 1. Redistributions of source code must retain the above copyright 91556Srgrimes * notice, this list of conditions and the following disclaimer. 101556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111556Srgrimes * notice, this list of conditions and the following disclaimer in the 121556Srgrimes * documentation and/or other materials provided with the distribution. 131556Srgrimes * 3. All advertising materials mentioning features or use of this software 141556Srgrimes * must display the following acknowledgement: 151556Srgrimes * This product includes software developed by the University of 161556Srgrimes * California, Berkeley and its contributors. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes */ 331556Srgrimes 341556Srgrimes#ifndef lint 3520418Sstevestatic char const copyright[] = 361556Srgrimes"@(#) Copyright (c) 1983, 1992, 1993\n\ 371556Srgrimes The Regents of the University of California. All rights reserved.\n"; 381556Srgrimes#endif /* not lint */ 391556Srgrimes 401556Srgrimes#ifndef lint 4136048Scharnier#if 0 4236048Scharnierstatic char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94"; 4336048Scharnier#endif 4436048Scharnierstatic const char rcsid[] = 4540535Smsmith "$Id: mkdir.c,v 1.11 1998/05/15 06:23:45 charnier Exp $"; 461556Srgrimes#endif /* not lint */ 471556Srgrimes 481556Srgrimes#include <sys/types.h> 491556Srgrimes#include <sys/stat.h> 501556Srgrimes 511556Srgrimes#include <err.h> 521556Srgrimes#include <errno.h> 531556Srgrimes#include <stdio.h> 541556Srgrimes#include <stdlib.h> 551556Srgrimes#include <string.h> 561556Srgrimes#include <unistd.h> 571556Srgrimes 5824524Smppint build __P((char *, mode_t)); 591556Srgrimesvoid usage __P((void)); 601556Srgrimes 611556Srgrimesint 621556Srgrimesmain(argc, argv) 631556Srgrimes int argc; 641556Srgrimes char *argv[]; 651556Srgrimes{ 6624524Smpp int ch, exitval, omode, pflag; 672923Sphk mode_t *set = (mode_t *)NULL; 6824524Smpp char *mode; 691556Srgrimes 702923Sphk omode = pflag = 0; 711556Srgrimes mode = NULL; 7224348Simp while ((ch = getopt(argc, argv, "m:p")) != -1) 731556Srgrimes switch(ch) { 741556Srgrimes case 'p': 751556Srgrimes pflag = 1; 761556Srgrimes break; 771556Srgrimes case 'm': 781556Srgrimes mode = optarg; 791556Srgrimes break; 801556Srgrimes case '?': 811556Srgrimes default: 821556Srgrimes usage(); 831556Srgrimes } 841556Srgrimes 851556Srgrimes argc -= optind; 861556Srgrimes argv += optind; 871556Srgrimes if (argv[0] == NULL) 881556Srgrimes usage(); 891556Srgrimes 901556Srgrimes if (mode == NULL) { 911556Srgrimes omode = S_IRWXU | S_IRWXG | S_IRWXO; 921556Srgrimes } else { 931556Srgrimes if ((set = setmode(mode)) == NULL) 941556Srgrimes errx(1, "invalid file mode: %s", mode); 9524524Smpp omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); 961556Srgrimes } 971556Srgrimes 981556Srgrimes for (exitval = 0; *argv != NULL; ++argv) { 9924524Smpp if (pflag) { 10024524Smpp if (build(*argv, omode)) 10124524Smpp exitval = 1; 1021556Srgrimes continue; 1031556Srgrimes } 10424524Smpp if (mkdir(*argv, omode) < 0) { 10524524Smpp warn("%s", *argv); 10624524Smpp exitval = 1; 1071556Srgrimes } 10840535Smsmith /* 10940535Smsmith * The mkdir() and umask() calls both honor only the low 11040535Smsmith * nine bits, so if you try to set a mode including the 11140535Smsmith * sticky, setuid, setgid bits you lose them. So chmod(). 11240535Smsmith */ 11340535Smsmith if (chmod(*argv, mode) == -1) { 11440535Smsmith warn("%s", *argv); 11540535Smsmith exitval = 1; 11640535Smsmith } 1171556Srgrimes } 1181556Srgrimes exit(exitval); 1191556Srgrimes} 1201556Srgrimes 1211556Srgrimesint 12224524Smppbuild(path, omode) 1231556Srgrimes char *path; 12424524Smpp mode_t omode; 1251556Srgrimes{ 1261556Srgrimes struct stat sb; 1271556Srgrimes mode_t numask, oumask; 12824524Smpp int first, last, retval; 1291556Srgrimes char *p; 1301556Srgrimes 1311556Srgrimes p = path; 1322959Sbde oumask = 0; 13324524Smpp retval = 0; 1341556Srgrimes if (p[0] == '/') /* Skip leading '/'. */ 1351556Srgrimes ++p; 13624524Smpp for (first = 1, last = 0; !last ; ++p) { 13724524Smpp if (p[0] == '\0') 13824524Smpp last = 1; 13924524Smpp else if (p[0] != '/') 1401556Srgrimes continue; 1411556Srgrimes *p = '\0'; 14224524Smpp if (p[1] == '\0') 14324524Smpp last = 1; 1441556Srgrimes if (first) { 1451556Srgrimes /* 1461556Srgrimes * POSIX 1003.2: 1471556Srgrimes * For each dir operand that does not name an existing 1481556Srgrimes * directory, effects equivalent to those cased by the 1491556Srgrimes * following command shall occcur: 1501556Srgrimes * 1511556Srgrimes * mkdir -p -m $(umask -S),u+wx $(dirname dir) && 1521556Srgrimes * mkdir [-m mode] dir 1531556Srgrimes * 1541556Srgrimes * We change the user's umask and then restore it, 1551556Srgrimes * instead of doing chmod's. 1561556Srgrimes */ 1571556Srgrimes oumask = umask(0); 1581556Srgrimes numask = oumask & ~(S_IWUSR | S_IXUSR); 1591556Srgrimes (void)umask(numask); 1601556Srgrimes first = 0; 1611556Srgrimes } 16224524Smpp if (last) 16324524Smpp (void)umask(oumask); 1641556Srgrimes if (stat(path, &sb)) { 1651556Srgrimes if (errno != ENOENT || 16624524Smpp mkdir(path, last ? omode : 16724524Smpp S_IRWXU | S_IRWXG | S_IRWXO) < 0) { 1681556Srgrimes warn("%s", path); 16924524Smpp retval = 1; 17024524Smpp break; 1711556Srgrimes } 17240535Smsmith /* 17340535Smsmith * The mkdir() and umask() calls both honor only the low 17440535Smsmith * nine bits, so if you try to set a mode including the 17540535Smsmith * sticky, setuid, setgid bits you lose them. So chmod(). 17640535Smsmith */ 17740535Smsmith if (chmod(*path, mode) == -1) { 17840535Smsmith warn("%s", *path); 17940535Smsmith exitval = 1; 18040535Smsmith } 1811556Srgrimes } 18224524Smpp else if ((sb.st_mode & S_IFMT) != S_IFDIR) { 18324524Smpp if (last) 18424524Smpp errno = EEXIST; 18524524Smpp else 18624524Smpp errno = ENOTDIR; 18724524Smpp warn("%s", path); 18824524Smpp retval = 1; 18924524Smpp break; 19024524Smpp } 1911556Srgrimes *p = '/'; 1921556Srgrimes } 19324524Smpp if (!first && !last) 1941556Srgrimes (void)umask(oumask); 19524524Smpp return (retval); 1961556Srgrimes} 1971556Srgrimes 1981556Srgrimesvoid 1991556Srgrimesusage() 2001556Srgrimes{ 2011556Srgrimes (void)fprintf(stderr, "usage: mkdir [-p] [-m mode] directory ...\n"); 2021556Srgrimes exit (1); 2031556Srgrimes} 204