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1 /* mkdir.c -- BSD compatible make directory function for System V |
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2 Copyright (C) 1988, 1990 Free Software Foundation, Inc. |
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3 |
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4 This program is free software; you can redistribute it and/or modify |
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5 it under the terms of the GNU General Public License as published by |
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6 the Free Software Foundation; either version 2 of the License, or |
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7 (at your option) any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, |
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 GNU General Public License for more details. |
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13 |
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14 You should have received a copy of the GNU General Public License |
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15 along with this program; if not, write to the Free Software |
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16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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17 02110-1301 USA. */ |
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18 |
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19 #ifdef HAVE_CONFIG_H |
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20 #include <config.h> |
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21 #endif |
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22 |
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23 #ifndef HAVE_MKDIR |
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24 |
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25 #ifdef HAVE_SYS_TYPES_H |
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26 #include <sys/types.h> |
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27 #endif |
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28 #include <sys/stat.h> |
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29 #include <errno.h> |
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30 #ifndef errno |
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31 extern int errno; |
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32 #endif |
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33 |
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34 #ifdef STAT_MACROS_BROKEN |
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35 #undef S_ISDIR |
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36 #endif |
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37 |
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38 #if !defined(S_ISDIR) && defined(S_IFDIR) |
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39 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
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40 #endif |
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41 |
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42 #include "safe-stat.h" |
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43 |
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44 /* mkdir adapted from GNU tar. */ |
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45 |
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46 /* Make directory DPATH, with permission mode DMODE. |
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47 |
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48 Written by Robert Rother, Mariah Corporation, August 1985 |
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49 (sdcsvax!rmr or rmr@uscd). If you want it, it's yours. |
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50 |
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51 Severely hacked over by John Gilmore to make a 4.2BSD compatible |
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52 subroutine. 11Mar86; hoptoad!gnu |
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53 |
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54 Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, |
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55 subroutine didn't return EEXIST. It does now. */ |
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56 |
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57 int |
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58 mkdir (dpath, dmode) |
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59 char *dpath; |
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60 int dmode; |
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61 { |
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62 int cpid, status; |
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63 struct stat statbuf; |
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64 |
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65 if (SAFE_STAT (dpath, &statbuf) == 0) |
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66 { |
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67 errno = EEXIST; /* stat worked, so it already exists. */ |
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68 return -1; |
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69 } |
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70 |
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71 /* If stat fails for a reason other than non-existence, return error. */ |
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72 if (errno != ENOENT) |
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73 return -1; |
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74 |
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75 cpid = fork (); |
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76 switch (cpid) |
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77 { |
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78 case -1: /* Cannot fork. */ |
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79 return -1; /* errno is already set. */ |
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80 |
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81 case 0: /* Child process. */ |
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82 /* Cheap hack to set mode of new directory. Since this child |
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83 process is going away anyway, we zap its umask. |
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84 This won't suffice to set SUID, SGID, etc. on this |
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85 directory, so the parent process calls chmod afterward. */ |
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86 status = umask (0); /* Get current umask. */ |
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87 umask (status | (0777 & ~dmode)); /* Set for mkdir. */ |
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88 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
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89 _exit (1); |
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90 |
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91 default: /* Parent process. */ |
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92 /* Wait for kid to finish. */ |
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93 while (wait (&status) != cpid) |
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94 /* Do nothing. */ ; |
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95 |
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96 if (status & 0xFFFF) |
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97 { |
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98 /* /bin/mkdir failed. */ |
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99 errno = EIO; |
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100 return -1; |
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101 } |
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102 return chmod (dpath, dmode); |
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103 } |
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104 } |
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105 |
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106 #endif |
