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+/* mkdir.c -- BSD compatible make directory function for System V
+ Copyright (C) 1988, 1990 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+#if !HAVE_DECL_ERRNO
+extern int errno;
+#endif
+
+#ifdef STAT_MACROS_BROKEN
+#undef S_ISDIR
+#endif
+
+#if !defined(S_ISDIR) && defined(S_IFDIR)
+#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#endif
+
+#include "safe-stat.h"
+
+/* mkdir adapted from GNU tar. */
+
+/* Make directory DPATH, with permission mode DMODE.
+
+ Written by Robert Rother, Mariah Corporation, August 1985
+ (sdcsvax!rmr or rmr@uscd). If you want it, it's yours.
+
+ Severely hacked over by John Gilmore to make a 4.2BSD compatible
+ subroutine. 11Mar86; hoptoad!gnu
+
+ Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
+ subroutine didn't return EEXIST. It does now. */
+
+int
+mkdir (dpath, dmode)
+ char *dpath;
+ int dmode;
+{
+ int cpid, status;
+ struct stat statbuf;
+
+ if (SAFE_STAT (dpath, &statbuf) == 0)
+ {
+ errno = EEXIST; /* stat worked, so it already exists. */
+ return -1;
+ }
+
+ /* If stat fails for a reason other than non-existence, return error. */
+ if (errno != ENOENT)
+ return -1;
+
+ cpid = fork ();
+ switch (cpid)
+ {
+ case -1: /* Cannot fork. */
+ return -1; /* errno is already set. */
+
+ case 0: /* Child process. */
+ /* Cheap hack to set mode of new directory. Since this child
+ process is going away anyway, we zap its umask.
+ This won't suffice to set SUID, SGID, etc. on this
+ directory, so the parent process calls chmod afterward. */
+ status = umask (0); /* Get current umask. */
+ umask (status | (0777 & ~dmode)); /* Set for mkdir. */
+ execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
+ _exit (1);
+
+ default: /* Parent process. */
+ /* Wait for kid to finish. */
+ while (wait (&status) != cpid)
+ /* Do nothing. */ ;
+
+ if (status & 0xFFFF)
+ {
+ /* /bin/mkdir failed. */
+ errno = EIO;
+ return -1;
+ }
+ return chmod (dpath, dmode);
+ }
+}

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