1 /* 2 * Copyright (c) 1983, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1983, 1992, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)mkdir.c 8.2 (Berkeley) 1/25/94 35 * $FreeBSD: src/bin/mkdir/mkdir.c,v 1.19.2.2 2001/08/01 04:42:37 obrien Exp $ 36 * $DragonFly: src/bin/mkdir/mkdir.c,v 1.4 2003/09/28 14:39:14 hmp Exp $ 37 */ 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 42 #include <err.h> 43 #include <errno.h> 44 #include <libgen.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <sysexits.h> 49 #include <unistd.h> 50 51 int build (char *, mode_t); 52 int main (int, char *[]); 53 void usage (void); 54 55 int vflag; 56 57 int 58 main(int argc, char **argv) 59 { 60 int ch, exitval, success, omode, pflag; 61 mode_t *set = (mode_t *)NULL; 62 char *mode; 63 64 omode = pflag = 0; 65 mode = NULL; 66 while ((ch = getopt(argc, argv, "m:pv")) != -1) 67 switch(ch) { 68 case 'm': 69 mode = optarg; 70 break; 71 case 'p': 72 pflag = 1; 73 break; 74 case 'v': 75 vflag = 1; 76 break; 77 case '?': 78 default: 79 usage(); 80 } 81 82 argc -= optind; 83 argv += optind; 84 if (argv[0] == NULL) 85 usage(); 86 87 if (mode == NULL) { 88 omode = S_IRWXU | S_IRWXG | S_IRWXO; 89 } else { 90 if ((set = setmode(mode)) == NULL) 91 errx(1, "invalid file mode: %s", mode); 92 omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); 93 free(set); 94 } 95 96 for (exitval = 0; *argv != NULL; ++argv) { 97 success = 1; 98 if (pflag) { 99 if (build(*argv, omode)) 100 success = 0; 101 } else if (mkdir(*argv, omode) < 0) { 102 if (errno == ENOTDIR || errno == ENOENT) 103 warn("%s", dirname(*argv)); 104 else 105 warn("%s", *argv); 106 success = 0; 107 } else if (vflag) 108 (void)printf("%s\n", *argv); 109 110 if (!success) 111 exitval = 1; 112 /* 113 * The mkdir() and umask() calls both honor only the low 114 * nine bits, so if you try to set a mode including the 115 * sticky, setuid, setgid bits you lose them. Don't do 116 * this unless the user has specifically requested a mode, 117 * as chmod will (obviously) ignore the umask. 118 */ 119 if (success && mode != NULL && chmod(*argv, omode) == -1) { 120 warn("%s", *argv); 121 exitval = 1; 122 } 123 } 124 exit(exitval); 125 } 126 127 int 128 build(char *path, mode_t omode) 129 { 130 struct stat sb; 131 mode_t numask, oumask; 132 int first, last, retval; 133 char *p; 134 135 p = path; 136 oumask = 0; 137 retval = 0; 138 if (p[0] == '/') /* Skip leading '/'. */ 139 ++p; 140 for (first = 1, last = 0; !last ; ++p) { 141 if (p[0] == '\0') 142 last = 1; 143 else if (p[0] != '/') 144 continue; 145 *p = '\0'; 146 if (p[1] == '\0') 147 last = 1; 148 if (first) { 149 /* 150 * POSIX 1003.2: 151 * For each dir operand that does not name an existing 152 * directory, effects equivalent to those cased by the 153 * following command shall occcur: 154 * 155 * mkdir -p -m $(umask -S),u+wx $(dirname dir) && 156 * mkdir [-m mode] dir 157 * 158 * We change the user's umask and then restore it, 159 * instead of doing chmod's. 160 */ 161 oumask = umask(0); 162 numask = oumask & ~(S_IWUSR | S_IXUSR); 163 (void)umask(numask); 164 first = 0; 165 } 166 if (last) 167 (void)umask(oumask); 168 if (stat(path, &sb)) { 169 if (errno != ENOENT || 170 mkdir(path, last ? omode : 171 S_IRWXU | S_IRWXG | S_IRWXO) < 0) { 172 warn("%s", path); 173 retval = 1; 174 break; 175 } else if (vflag) 176 printf("%s\n", path); 177 } 178 else if ((sb.st_mode & S_IFMT) != S_IFDIR) { 179 if (last) 180 errno = EEXIST; 181 else 182 errno = ENOTDIR; 183 warn("%s", path); 184 retval = 1; 185 break; 186 } 187 if (!last) 188 *p = '/'; 189 } 190 if (!first && !last) 191 (void)umask(oumask); 192 return (retval); 193 } 194 195 void 196 usage(void) 197 { 198 199 (void)fprintf(stderr, "usage: mkdir [-pv] [-m mode] directory ...\n"); 200 exit (EX_USAGE); 201 } 202