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126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/* mkrmdir.c -- BSD compatible directory functions for System V
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Copyright (C) 1988, 1990 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#ifndef STDC_HEADERS
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extern int errno;
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#endif
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/* mkdir and rmdir adapted from GNU tar. */
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/* Make directory DPATH, with permission mode DMODE.
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Written by Robert Rother, Mariah Corporation, August 1985
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(sdcsvax!rmr or rmr@uscd). If you want it, it's yours.
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Severely hacked over by John Gilmore to make a 4.2BSD compatible
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subroutine. 11Mar86; hoptoad!gnu
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Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
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subroutine didn't return EEXIST. It does now. */
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int
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mkdir (dpath, dmode)
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char *dpath;
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int dmode;
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{
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int cpid, status;
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struct stat statbuf;
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if (stat (dpath, &statbuf) == 0)
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{
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errno = EEXIST; /* stat worked, so it already exists. */
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return -1;
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}
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/* If stat fails for a reason other than non-existence, return error. */
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if (errno != ENOENT)
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return -1;
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cpid = fork ();
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switch (cpid)
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{
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case -1: /* Cannot fork. */
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return -1; /* errno is set already. */
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case 0: /* Child process. */
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/* Cheap hack to set mode of new directory. Since this child
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process is going away anyway, we zap its umask.
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This won't suffice to set SUID, SGID, etc. on this
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directory, so the parent process calls chmod afterward. */
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status = umask (0); /* Get current umask. */
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umask (status | (0777 & ~dmode)); /* Set for mkdir. */
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execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
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_exit (1);
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default: /* Parent process. */
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while (wait (&status) != cpid) /* Wait for kid to finish. */
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/* Do nothing. */ ;
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if (status & 0xFFFF)
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{
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errno = EIO; /* /bin/mkdir failed. */
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return -1;
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}
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return chmod (dpath, dmode);
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}
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}
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/* Remove directory DPATH.
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Return 0 if successful, -1 if not. */
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int
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rmdir (dpath)
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char *dpath;
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{
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int cpid, status;
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struct stat statbuf;
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if (stat (dpath, &statbuf) != 0)
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return -1; /* stat set errno. */
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if ((statbuf.st_mode & S_IFMT) != S_IFDIR)
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{
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errno = ENOTDIR;
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return -1;
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}
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cpid = fork ();
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switch (cpid)
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{
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case -1: /* Cannot fork. */
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return -1; /* errno is set already. */
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case 0: /* Child process. */
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execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
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_exit (1);
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default: /* Parent process. */
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while (wait (&status) != cpid) /* Wait for kid to finish. */
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/* Do nothing. */ ;
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if (status & 0xFFFF)
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{
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errno = EIO; /* /bin/rmdir failed. */
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return -1;
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}
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return 0;
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}
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}
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