1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1992-2010 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * * 20 ***********************************************************************/ 21 #pragma prototyped 22 /* 23 * David Korn 24 * AT&T Bell Laboratories 25 * 26 * mkdir 27 */ 28 29 static const char usage[] = 30 "[-?\n@(#)$Id: mkdir (AT&T Research) 2009-12-03 $\n]" 31 USAGE_LICENSE 32 "[+NAME?mkdir - make directories]" 33 "[+DESCRIPTION?\bmkdir\b creates one or more directories. By " 34 "default, the mode of created directories is \ba=rwx\b minus the " 35 "bits set in the \bumask\b(1).]" 36 "[m:mode]:[mode?Set the mode of created directories to \amode\a. " 37 "\amode\a is symbolic or octal mode as in \bchmod\b(1). Relative " 38 "modes assume an initial mode of \ba=rwx\b.]" 39 "[p:parents?Create any missing intermediate pathname components. For " 40 "each dir operand that does not name an existing directory, effects " 41 "equivalent to those caused by the following command shall occur: " 42 "\vmkdir -p -m $(umask -S),u+wx $(dirname dir) && mkdir [-m mode]] " 43 "dir\v where the \b-m\b mode option represents that option supplied to " 44 "the original invocation of \bmkdir\b, if any. Each dir operand that " 45 "names an existing directory shall be ignored without error.]" 46 "[v:verbose?Print a message on the standard error for each created " 47 "directory.]" 48 "\n" 49 "\ndirectory ...\n" 50 "\n" 51 "[+EXIT STATUS?]{" 52 "[+0?All directories created successfully, or the \b-p\b option " 53 "was specified and all the specified directories now exist.]" 54 "[+>0?An error occurred.]" 55 "}" 56 "[+SEE ALSO?\bchmod\b(1), \brmdir\b(1), \bumask\b(1)]" 57 ; 58 59 #include <cmd.h> 60 #include <ls.h> 61 62 #define DIRMODE (S_IRWXU|S_IRWXG|S_IRWXO) 63 64 int 65 b_mkdir(int argc, char** argv, void* context) 66 { 67 register char* arg; 68 register int n; 69 register mode_t mode = DIRMODE; 70 register mode_t mask = 0; 71 register int mflag = 0; 72 register int pflag = 0; 73 register int vflag = 0; 74 char* name; 75 mode_t dmode; 76 struct stat st; 77 78 cmdinit(argc, argv, context, ERROR_CATALOG, 0); 79 for (;;) 80 { 81 switch (optget(argv, usage)) 82 { 83 case 0: 84 break; 85 case 'm': 86 mflag = 1; 87 mode = strperm(arg = opt_info.arg, &opt_info.arg, mode); 88 if (*opt_info.arg) 89 error(ERROR_exit(0), "%s: invalid mode", arg); 90 continue; 91 case 'p': 92 pflag = 1; 93 continue; 94 case 'v': 95 vflag = 1; 96 continue; 97 case ':': 98 error(2, "%s", opt_info.arg); 99 continue; 100 case '?': 101 error(ERROR_usage(2), "%s", opt_info.arg); 102 continue; 103 } 104 break; 105 } 106 argv += opt_info.index; 107 if (error_info.errors || !*argv) 108 error(ERROR_usage(2), "%s", optusage(NiL)); 109 mask = umask(0); 110 if (mflag || pflag) 111 { 112 dmode = DIRMODE & ~mask; 113 if (!mflag) 114 mode = dmode; 115 dmode |= S_IWUSR | S_IXUSR; 116 } 117 else 118 { 119 mode &= ~mask; 120 umask(mask); 121 mask = 0; 122 } 123 while (arg = *argv++) 124 { 125 if (mkdir(arg, mode) < 0) 126 { 127 if (!pflag || !(errno == ENOENT || errno == EEXIST || errno == ENOTDIR)) 128 { 129 error(ERROR_system(0), "%s:", arg); 130 continue; 131 } 132 if (errno == EEXIST) 133 continue; 134 135 /* 136 * -p option, preserve intermediates 137 * first eliminate trailing /'s 138 */ 139 140 n = strlen(arg); 141 while (n > 0 && arg[--n] == '/'); 142 arg[n + 1] = 0; 143 for (name = arg, n = *arg; n;) 144 { 145 /* skip over slashes */ 146 while (*arg == '/') 147 arg++; 148 /* skip to next component */ 149 while ((n = *arg) && n != '/') 150 arg++; 151 *arg = 0; 152 if (mkdir(name, n ? dmode : mode) < 0 && errno != EEXIST && access(name, F_OK) < 0) 153 { 154 *arg = n; 155 error(ERROR_system(0), "%s:", name); 156 break; 157 } 158 if (vflag) 159 error(0, "%s: directory created", name); 160 if (!(*arg = n) && (mode & (S_ISVTX|S_ISUID|S_ISGID))) 161 { 162 if (stat(name, &st)) 163 { 164 error(ERROR_system(0), "%s: cannot stat", name); 165 break; 166 } 167 if ((st.st_mode & (S_ISVTX|S_ISUID|S_ISGID)) != (mode & (S_ISVTX|S_ISUID|S_ISGID)) && chmod(name, mode)) 168 { 169 error(ERROR_system(0), "%s: cannot change mode from %s to %s", name, fmtperm(st.st_mode & (S_ISVTX|S_ISUID|S_ISGID)), fmtperm(mode)); 170 break; 171 } 172 } 173 } 174 } 175 else if (vflag) 176 error(0, "%s: directory created", arg); 177 } 178 if (mask) 179 umask(mask); 180 return error_info.errors != 0; 181 } 182