1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1992-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 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) 2006-08-27 $\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 "\n" 47 "\ndirectory ...\n" 48 "\n" 49 "[+EXIT STATUS?]{" 50 "[+0?All directories created successfully, or the \b-p\b option " 51 "was specified and all the specified directories now exist.]" 52 "[+>0?An error occurred.]" 53 "}" 54 "[+SEE ALSO?\bchmod\b(1), \brmdir\b(1), \bumask\b(1)]" 55 ; 56 57 #include <cmd.h> 58 #include <ls.h> 59 60 #define DIRMODE (S_IRWXU|S_IRWXG|S_IRWXO) 61 62 int 63 b_mkdir(int argc, char** argv, void* context) 64 { 65 register char* arg; 66 register int n; 67 register mode_t mode = DIRMODE; 68 register mode_t mask = 0; 69 register int mflag = 0; 70 register int pflag = 0; 71 char* name; 72 mode_t dmode; 73 74 cmdinit(argc, argv, context, ERROR_CATALOG, 0); 75 while (n = optget(argv, usage)) switch (n) 76 { 77 case 'p': 78 pflag = 1; 79 break; 80 case 'm': 81 mflag = 1; 82 mode = strperm(arg = opt_info.arg, &opt_info.arg, mode); 83 if (*opt_info.arg) 84 error(ERROR_exit(0), "%s: invalid mode", arg); 85 break; 86 case ':': 87 error(2, "%s", opt_info.arg); 88 break; 89 case '?': 90 error(ERROR_usage(2), "%s", opt_info.arg); 91 break; 92 } 93 argv += opt_info.index; 94 if (error_info.errors || !*argv) 95 error(ERROR_usage(2), "%s", optusage(NiL)); 96 mask = umask(0); 97 if (mflag || pflag) 98 { 99 dmode = DIRMODE & ~mask; 100 if (!mflag) 101 mode = dmode; 102 dmode |= S_IWUSR | S_IXUSR; 103 } 104 else 105 { 106 mode &= ~mask; 107 umask(mask); 108 mask = 0; 109 } 110 while (arg = *argv++) 111 { 112 if (mkdir(arg, mode) < 0) 113 { 114 if (!pflag || !(errno == ENOENT || errno == EEXIST || errno == ENOTDIR)) 115 { 116 error(ERROR_system(0), "%s:", arg); 117 continue; 118 } 119 if (errno == EEXIST) 120 continue; 121 122 /* 123 * -p option, preserve intermediates 124 * first eliminate trailing /'s 125 */ 126 127 n = strlen(arg); 128 while (n > 0 && arg[--n] == '/'); 129 arg[n + 1] = 0; 130 for (name = arg, n = *arg; n;) 131 { 132 /* skip over slashes */ 133 while (*arg == '/') 134 arg++; 135 /* skip to next component */ 136 while ((n = *arg) && n != '/') 137 arg++; 138 *arg = 0; 139 if (mkdir(name, n ? dmode : mode) < 0 && errno != EEXIST && access(name, F_OK) < 0) 140 { 141 *arg = n; 142 error(ERROR_system(0), "%s:", name); 143 break; 144 } 145 *arg = n; 146 } 147 } 148 } 149 if (mask) 150 umask(mask); 151 return error_info.errors != 0; 152 } 153