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@@ -1,1256 +0,0 @@
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-/* Supporting routines which may sometimes be missing.
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- Copyright (C) 1988, 1992 Free Software Foundation
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-
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-This file is part of GNU Tar.
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-
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-GNU Tar 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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-
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-GNU Tar 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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-
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-You should have received a copy of the GNU General Public License
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-along with GNU Tar; see the file COPYING. If not, write to
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-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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-
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-#include <stdio.h>
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-#include <sys/types.h>
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-#include <signal.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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-
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-#ifdef BSD42
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-#include <sys/file.h>
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-#else
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-#ifndef V7
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-#include <fcntl.h>
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-#endif
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-#endif
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-
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-#include "tar.h"
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-#include "port.h"
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-
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-extern long baserec;
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-
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-/* All machine-dependent #ifdefs should appear here, instead of
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- being scattered through the file. For UN*X systems, it is better to
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- figure out what is needed in the configure script, for most of the
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- features. */
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-
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-#ifdef __MSDOS__
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-char TTY_NAME[] = "con";
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-#define HAVE_STRSTR
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-#define HAVE_RENAME
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-#define HAVE_MKDIR
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-#else
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-char TTY_NAME[] = "/dev/tty";
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-#endif
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-
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-/* End of system-dependent #ifdefs */
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-
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-
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-#ifndef HAVE_VALLOC
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-/*
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- * valloc() does a malloc() on a page boundary. On some systems,
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- * this can make large block I/O more efficient.
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- */
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-char *
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-valloc (size)
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- unsigned size;
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-{
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- return (malloc (size));
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-}
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-
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-#endif /* !HAVE_VALLOC */
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-
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-#ifndef HAVE_MKDIR
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-/*
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- * Written by Robert Rother, Mariah Corporation, August 1985.
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- *
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- * If you want it, it's yours. All I ask in return is that if you
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- * figure out how to do this in a Bourne Shell script you send me
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- * a copy.
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- * sdcsvax!rmr or rmr@uscd
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- *
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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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- *
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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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- */
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-
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-/*
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- * Make a directory.
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- */
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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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-
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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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-
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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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-
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- switch (cpid = fork ())
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- {
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-
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- case -1: /* Error in fork() */
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- return (-1); /* Errno is set already */
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-
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- case 0: /* Child process */
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- /*
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- * Cheap hack to set mode of new directory. Since this
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- * child process is going away anyway, we zap its umask.
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- * FIXME, this won't suffice to set SUID, SGID, etc. on this
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- * directory. Does anybody care?
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- */
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- status = umask (0); /* Get current umask */
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- status = umask (status | (0777 & ~dmode)); /* Set for mkdir */
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- execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
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- _exit (-1); /* Can't exec /bin/mkdir */
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-
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- default: /* Parent process */
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- while (cpid != wait (&status)); /* Wait for kid to finish */
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- }
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-
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- if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
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- {
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- errno = EIO; /* We don't know why, but */
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- return -1; /* /bin/mkdir failed */
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- }
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-
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- return 0;
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-}
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-
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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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-
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- if (stat (dpath, &statbuf) != 0)
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- {
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- /* Stat just set errno. We don't have to */
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- return -1;
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- }
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-
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- switch (cpid = fork ())
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- {
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-
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- case -1: /* Error in fork() */
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- return (-1); /* Errno is set already */
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-
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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); /* Can't exec /bin/mkdir */
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-
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- default: /* Parent process */
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- while (cpid != wait (&status)); /* Wait for kid to finish */
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- }
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-
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- if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
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- {
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- errno = EIO; /* We don't know why, but */
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- return -1; /* /bin/mkdir failed */
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- }
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-
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- return 0;
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-}
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-
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-#endif /* !HAVE_MKDIR */
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-
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-#ifndef HAVE_RENAME
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-/* Rename file FROM to file TO.
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- Return 0 if successful, -1 if not. */
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-
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-int
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-rename (from, to)
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- char *from;
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- char *to;
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-{
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- struct stat from_stats;
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-
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- if (stat (from, &from_stats))
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- return -1;
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-
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- if (unlink (to) && errno != ENOENT)
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- return -1;
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-
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- if (link (from, to))
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- return -1;
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-
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- if (unlink (from) && errno != ENOENT)
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- {
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- unlink (to);
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- return -1;
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- }
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-
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- return 0;
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-}
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-
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-#endif /* !HAVE_RENAME */
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-
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-#ifdef minix
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-/* Minix has bcopy but not bzero, and no memset. Thanks, Andy. */
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-void
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-bzero (s1, n)
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- register char *s1;
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- register int n;
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-{
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- while (n--)
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- *s1++ = '\0';
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-}
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-
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-/* It also has no bcmp() */
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-int
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-bcmp (s1, s2, n)
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- register char *s1, *s2;
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- register int n;
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-{
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- for (; n--; ++s1, ++s2)
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- {
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- if (*s1 != *s2)
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- return *s1 - *s2;
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- }
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- return 0;
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-}
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-
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-/*
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- * Groan, Minix doesn't have execlp either!
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- *
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- * execlp(file,arg0,arg1...argn,(char *)NULL)
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- * exec a program, automatically searching for the program through
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- * all the directories on the PATH.
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- *
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- * This version is naive about variable argument lists, it assumes
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- * a straightforward C calling sequence. If your system has odd stacks
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- * *and* doesn't have execlp, YOU get to fix it.
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- */
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-int
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-execlp (filename, arg0)
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- char *filename, *arg0;
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-{
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- register char *p, *path;
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- register char *fnbuffer;
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- char **argstart = &arg0;
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- struct stat statbuf;
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- extern char **environ;
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-
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- if ((p = getenv ("PATH")) == NULL)
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- {
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- /* couldn't find path variable -- try to exec given filename */
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- return execve (filename, argstart, environ);
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- }
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-
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- /*
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- * make a place to build the filename. We malloc larger than we
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- * need, but we know it will fit in this.
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- */
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- fnbuffer = malloc (strlen (p) + 1 + strlen (filename));
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- if (fnbuffer == NULL)
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- {
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- errno = ENOMEM;
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- return -1;
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- }
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-
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- /*
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- * try each component of the path to see if the file's there
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- * and executable.
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- */
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- for (path = p; path; path = p)
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- {
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- /* construct full path name to try */
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- if ((p = index (path, ':')) == NULL)
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- {
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- strcpy (fnbuffer, path);
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- }
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- else
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- {
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- strncpy (fnbuffer, path, p - path);
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- fnbuffer[p - path] = '\0';
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- p++; /* Skip : for next time */
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- }
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- if (strlen (fnbuffer) != 0)
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- strcat (fnbuffer, "/");
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- strcat (fnbuffer, filename);
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-
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- /* check to see if file is there and is a normal file */
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- if (stat (fnbuffer, &statbuf) < 0)
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- {
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- if (errno == ENOENT)
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- continue; /* file not there,keep on looking */
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- else
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- goto fail; /* failed for some reason, return */
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- }
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- if (!S_ISREG (statbuf.st_mode))
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- continue;
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-
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- if (execve (fnbuffer, argstart, environ) < 0
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- && errno != ENOENT
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- && errno != ENOEXEC)
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- {
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- /* failed, for some other reason besides "file
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- * not found" or "not a.out format"
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- */
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- goto fail;
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- }
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-
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- /*
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- * If we got error ENOEXEC, the file is executable but is
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- * not an object file. Try to execute it as a shell script,
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- * returning error if we can't execute /bin/sh.
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- *
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- * FIXME, this code is broken in several ways. Shell
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- * scripts should not in general be executed by the user's
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- * SHELL variable program. On more mature systems, the
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- * script can specify with #!/bin/whatever. Also, this
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- * code clobbers argstart[-1] if the exec of the shell
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- * fails.
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- */
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- if (errno == ENOEXEC)
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- {
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- char *shell;
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-
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- /* Try to execute command "sh arg0 arg1 ..." */
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- if ((shell = getenv ("SHELL")) == NULL)
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- shell = "/bin/sh";
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- argstart[-1] = shell;
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- argstart[0] = fnbuffer;
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- execve (shell, &argstart[-1], environ);
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- goto fail; /* Exec didn't work */
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- }
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-
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- /*
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- * If we succeeded, the execve() doesn't return, so we
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- * can only be here is if the file hasn't been found yet.
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- * Try the next place on the path.
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- */
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- }
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-
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- /* all attempts failed to locate the file. Give up. */
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- errno = ENOENT;
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-
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-fail:
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- free (fnbuffer);
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- return -1;
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-}
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-
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-#endif /* minix */
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-
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-
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-#ifdef EMUL_OPEN3
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-#include "open3.h"
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-/*
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- * open3 -- routine to emulate the 3-argument open system
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- * call that is present in most modern Unix systems.
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- * This version attempts to support all the flag bits except for O_NDELAY
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- * and O_APPEND, which are silently ignored. The emulation is not as efficient
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- * as the real thing (at worst, 4 system calls instead of one), but there's
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- * not much I can do about that.
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- *
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- * Written 6/10/87 by rmtodd@uokmax
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- *
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- * open3(path, flag, mode)
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- * Attempts to open the file specified by
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- * the given pathname. The following flag bits (#defined in tar.h)
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- * specify options to the routine:
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- * O_RDONLY file open for read only
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- * O_WRONLY file open for write only
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- * O_RDWR file open for both read & write
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- * (Needless to say, you should only specify one of the above).
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- * O_CREAT file is created with specified mode if it needs to be.
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- * O_TRUNC if file exists, it is truncated to 0 bytes
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- * O_EXCL used with O_CREAT--routine returns error if file exists
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- * Function returns file descriptor if successful, -1 and errno if not.
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- */
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-
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-/*
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- * array to give arguments to access for various modes
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- * FIXME, this table depends on the specific integer values of O_XXX,
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- * and also contains integers (args to 'access') that should be #define's.
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- */
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-static int modes[] =
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-{
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- 04, /* O_RDONLY */
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- 02, /* O_WRONLY */
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- 06, /* O_RDWR */
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- 06, /* invalid but we'd better cope -- O_WRONLY+O_RDWR */
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-};
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-
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-/* Shut off the automatic emulation of open(), we'll need it. */
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-#undef open
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-
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-int
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-open3 (path, flags, mode)
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- char *path;
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- int flags, mode;
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-{
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- int exists = 1;
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- int call_creat = 0;
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- int fd;
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- /*
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- * We actually do the work by calling the open() or creat() system
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- * call, depending on the flags. Call_creat is true if we will use
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- * creat(), false if we will use open().
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- */
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-
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- /*
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- * See if the file exists and is accessible in the requested mode.
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- *
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- * Strictly speaking we shouldn't be using access, since access checks
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- * against real uid, and the open call should check against euid.
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- * Most cases real uid == euid, so it won't matter. FIXME.
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- * FIXME, the construction "flags & 3" and the modes table depends
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- * on the specific integer values of the O_XXX #define's. Foo!
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- */
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- if (access (path, modes[flags & 3]) < 0)
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- {
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- if (errno == ENOENT)
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- {
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- /* the file does not exist */
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- exists = 0;
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- }
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- else
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- {
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- /* probably permission violation */
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- if (flags & O_EXCL)
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- {
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- /* Oops, the file exists, we didn't want it. */
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- /* No matter what the error, claim EEXIST. */
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- errno = EEXIST;
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- }
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- return -1;
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- }
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- }
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-
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- /* if we have the O_CREAT bit set, check for O_EXCL */
|
|
|
- if (flags & O_CREAT)
|
|
|
- {
|
|
|
- if ((flags & O_EXCL) && exists)
|
|
|
- {
|
|
|
- /* Oops, the file exists and we didn't want it to. */
|
|
|
- errno = EEXIST;
|
|
|
- return -1;
|
|
|
- }
|
|
|
- /*
|
|
|
- * If the file doesn't exist, be sure to call creat() so that
|
|
|
- * it will be created with the proper mode.
|
|
|
- */
|
|
|
- if (!exists)
|
|
|
- call_creat = 1;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* If O_CREAT isn't set and the file doesn't exist, error. */
|
|
|
- if (!exists)
|
|
|
- {
|
|
|
- errno = ENOENT;
|
|
|
- return -1;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * If the O_TRUNC flag is set and the file exists, we want to call
|
|
|
- * creat() anyway, since creat() guarantees that the file will be
|
|
|
- * truncated and open()-for-writing doesn't.
|
|
|
- * (If the file doesn't exist, we're calling creat() anyway and the
|
|
|
- * file will be created with zero length.)
|
|
|
- */
|
|
|
- if ((flags & O_TRUNC) && exists)
|
|
|
- call_creat = 1;
|
|
|
- /* actually do the call */
|
|
|
- if (call_creat)
|
|
|
- {
|
|
|
- /*
|
|
|
- * call creat. May have to close and reopen the file if we
|
|
|
- * want O_RDONLY or O_RDWR access -- creat() only gives
|
|
|
- * O_WRONLY.
|
|
|
- */
|
|
|
- fd = creat (path, mode);
|
|
|
- if (fd < 0 || (flags & O_WRONLY))
|
|
|
- return fd;
|
|
|
- if (close (fd) < 0)
|
|
|
- return -1;
|
|
|
- /* Fall out to reopen the file we've created */
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * calling old open, we strip most of the new flags just in case.
|
|
|
- */
|
|
|
- return open (path, flags & (O_RDONLY | O_WRONLY | O_RDWR | O_BINARY));
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* EMUL_OPEN3 */
|
|
|
-
|
|
|
-#ifndef HAVE_MKNOD
|
|
|
-#ifdef __MSDOS__
|
|
|
-typedef int dev_t;
|
|
|
-#endif
|
|
|
-/* Fake mknod by complaining */
|
|
|
-int
|
|
|
-mknod (path, mode, dev)
|
|
|
- char *path;
|
|
|
- unsigned short mode;
|
|
|
- dev_t dev;
|
|
|
-{
|
|
|
- int fd;
|
|
|
-
|
|
|
- errno = ENXIO; /* No such device or address */
|
|
|
- return -1; /* Just give an error */
|
|
|
-}
|
|
|
-
|
|
|
-/* Fake links by copying */
|
|
|
-int
|
|
|
-link (path1, path2)
|
|
|
- char *path1;
|
|
|
- char *path2;
|
|
|
-{
|
|
|
- char buf[256];
|
|
|
- int ifd, ofd;
|
|
|
- int nrbytes;
|
|
|
- int nwbytes;
|
|
|
-
|
|
|
- fprintf (stderr, "%s: %s: cannot link to %s, copying instead\n",
|
|
|
- tar, path1, path2);
|
|
|
- if ((ifd = open (path1, O_RDONLY | O_BINARY)) < 0)
|
|
|
- return -1;
|
|
|
- if ((ofd = creat (path2, 0666)) < 0)
|
|
|
- return -1;
|
|
|
- setmode (ofd, O_BINARY);
|
|
|
- while ((nrbytes = read (ifd, buf, sizeof (buf))) > 0)
|
|
|
- {
|
|
|
- if ((nwbytes = write (ofd, buf, nrbytes)) != nrbytes)
|
|
|
- {
|
|
|
- nrbytes = -1;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- /* Note use of "|" rather than "||" below: we want to close
|
|
|
- * the files even if an error occurs.
|
|
|
- */
|
|
|
- if ((nrbytes < 0) | (0 != close (ifd)) | (0 != close (ofd)))
|
|
|
- {
|
|
|
- unlink (path2);
|
|
|
- return -1;
|
|
|
- }
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/* everyone owns everything on MS-DOS (or is it no one owns anything?) */
|
|
|
-int
|
|
|
-chown (path, uid, gid)
|
|
|
- char *path;
|
|
|
- int uid;
|
|
|
- int gid;
|
|
|
-{
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-geteuid ()
|
|
|
-{
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* !HAVE_MKNOD */
|
|
|
-
|
|
|
-#ifdef __TURBOC__
|
|
|
-#include <time.h>
|
|
|
-#include <fcntl.h>
|
|
|
-#include <io.h>
|
|
|
-
|
|
|
-struct utimbuf
|
|
|
-{
|
|
|
- time_t actime; /* Access time. */
|
|
|
- time_t modtime; /* Modification time. */
|
|
|
-};
|
|
|
-
|
|
|
-int
|
|
|
-utime (char *filename, struct utimbuf *utb)
|
|
|
-{
|
|
|
- struct tm *tm;
|
|
|
- struct ftime filetime;
|
|
|
- time_t when;
|
|
|
- int fd;
|
|
|
- int status;
|
|
|
-
|
|
|
- if (utb == 0)
|
|
|
- when = time (0);
|
|
|
- else
|
|
|
- when = utb->modtime;
|
|
|
-
|
|
|
- fd = _open (filename, O_RDWR);
|
|
|
- if (fd == -1)
|
|
|
- return -1;
|
|
|
-
|
|
|
- tm = localtime (&when);
|
|
|
- if (tm->tm_year < 80)
|
|
|
- filetime.ft_year = 0;
|
|
|
- else
|
|
|
- filetime.ft_year = tm->tm_year - 80;
|
|
|
- filetime.ft_month = tm->tm_mon + 1;
|
|
|
- filetime.ft_day = tm->tm_mday;
|
|
|
- if (tm->tm_hour < 0)
|
|
|
- filetime.ft_hour = 0;
|
|
|
- else
|
|
|
- filetime.ft_hour = tm->tm_hour;
|
|
|
- filetime.ft_min = tm->tm_min;
|
|
|
- filetime.ft_tsec = tm->tm_sec / 2;
|
|
|
-
|
|
|
- status = setftime (fd, &filetime);
|
|
|
- _close (fd);
|
|
|
- return status;
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* __TURBOC__ */
|
|
|
-
|
|
|
-/* Stash argv[0] here so panic will know what the program is called */
|
|
|
-char *myname = 0;
|
|
|
-
|
|
|
-void
|
|
|
-panic (s)
|
|
|
- char *s;
|
|
|
-{
|
|
|
- if (myname)
|
|
|
- fprintf (stderr, "%s:", myname);
|
|
|
- fprintf (stderr, s);
|
|
|
- putc ('\n', stderr);
|
|
|
- exit (12);
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-PTR
|
|
|
-ck_malloc (size)
|
|
|
- size_t size;
|
|
|
-{
|
|
|
- PTR ret;
|
|
|
-
|
|
|
- if (!size)
|
|
|
- size++;
|
|
|
- ret = malloc (size);
|
|
|
- if (ret == 0)
|
|
|
- panic ("Couldn't allocate memory");
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-/* Used by alloca.c and bison.simple. */
|
|
|
-char *
|
|
|
-xmalloc (size)
|
|
|
- size_t size;
|
|
|
-{
|
|
|
- return (char *) ck_malloc (size);
|
|
|
-}
|
|
|
-
|
|
|
-PTR
|
|
|
-ck_realloc (ptr, size)
|
|
|
- PTR ptr;
|
|
|
- size_t size;
|
|
|
-{
|
|
|
- PTR ret;
|
|
|
-
|
|
|
- if (!ptr)
|
|
|
- ret = ck_malloc (size);
|
|
|
- else
|
|
|
- ret = realloc (ptr, size);
|
|
|
- if (ret == 0)
|
|
|
- panic ("Couldn't re-allocate memory");
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-/* Implement a variable sized buffer of 'stuff'. We don't know what it is,
|
|
|
- nor do we care, as long as it doesn't mind being aligned on a char boundry.
|
|
|
- */
|
|
|
-
|
|
|
-struct buffer
|
|
|
- {
|
|
|
- int allocated;
|
|
|
- int length;
|
|
|
- char *b;
|
|
|
- };
|
|
|
-
|
|
|
-#define MIN_ALLOCATE 50
|
|
|
-
|
|
|
-char *
|
|
|
-init_buffer ()
|
|
|
-{
|
|
|
- struct buffer *b;
|
|
|
-
|
|
|
- b = (struct buffer *) ck_malloc (sizeof (struct buffer));
|
|
|
- b->allocated = MIN_ALLOCATE;
|
|
|
- b->b = (char *) ck_malloc (MIN_ALLOCATE);
|
|
|
- b->length = 0;
|
|
|
- return (char *) b;
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-flush_buffer (bb)
|
|
|
- char *bb;
|
|
|
-{
|
|
|
- struct buffer *b;
|
|
|
-
|
|
|
- b = (struct buffer *) bb;
|
|
|
- free (b->b);
|
|
|
- b->b = 0;
|
|
|
- b->allocated = 0;
|
|
|
- b->length = 0;
|
|
|
- free ((void *) b);
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-add_buffer (bb, p, n)
|
|
|
- char *bb;
|
|
|
- char *p;
|
|
|
- int n;
|
|
|
-{
|
|
|
- struct buffer *b;
|
|
|
-
|
|
|
- b = (struct buffer *) bb;
|
|
|
- if (b->length + n > b->allocated)
|
|
|
- {
|
|
|
- b->allocated = b->length + n + MIN_ALLOCATE;
|
|
|
- b->b = (char *) ck_realloc (b->b, b->allocated);
|
|
|
- }
|
|
|
- bcopy (p, b->b + b->length, n);
|
|
|
- b->length += n;
|
|
|
-}
|
|
|
-
|
|
|
-char *
|
|
|
-get_buffer (bb)
|
|
|
- char *bb;
|
|
|
-{
|
|
|
- struct buffer *b;
|
|
|
-
|
|
|
- b = (struct buffer *) bb;
|
|
|
- return b->b;
|
|
|
-}
|
|
|
-
|
|
|
-char *
|
|
|
-merge_sort (list, n, off, cmp)
|
|
|
- char *list;
|
|
|
- int (*cmp) ();
|
|
|
- unsigned n;
|
|
|
- int off;
|
|
|
-{
|
|
|
- char *ret;
|
|
|
-
|
|
|
- char *alist, *blist;
|
|
|
- unsigned alength, blength;
|
|
|
-
|
|
|
- char *tptr;
|
|
|
- int tmp;
|
|
|
- char **prev;
|
|
|
-#define NEXTOF(ptr) (* ((char **)(((char *)(ptr))+off) ) )
|
|
|
- if (n == 1)
|
|
|
- return list;
|
|
|
- if (n == 2)
|
|
|
- {
|
|
|
- if ((*cmp) (list, NEXTOF (list)) > 0)
|
|
|
- {
|
|
|
- ret = NEXTOF (list);
|
|
|
- NEXTOF (ret) = list;
|
|
|
- NEXTOF (list) = 0;
|
|
|
- return ret;
|
|
|
- }
|
|
|
- return list;
|
|
|
- }
|
|
|
- alist = list;
|
|
|
- alength = (n + 1) / 2;
|
|
|
- blength = n / 2;
|
|
|
- for (tptr = list, tmp = (n - 1) / 2; tmp; tptr = NEXTOF (tptr), tmp--)
|
|
|
- ;
|
|
|
- blist = NEXTOF (tptr);
|
|
|
- NEXTOF (tptr) = 0;
|
|
|
-
|
|
|
- alist = merge_sort (alist, alength, off, cmp);
|
|
|
- blist = merge_sort (blist, blength, off, cmp);
|
|
|
- prev = &ret;
|
|
|
- for (; alist && blist;)
|
|
|
- {
|
|
|
- if ((*cmp) (alist, blist) < 0)
|
|
|
- {
|
|
|
- tptr = NEXTOF (alist);
|
|
|
- *prev = alist;
|
|
|
- prev = &(NEXTOF (alist));
|
|
|
- alist = tptr;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- tptr = NEXTOF (blist);
|
|
|
- *prev = blist;
|
|
|
- prev = &(NEXTOF (blist));
|
|
|
- blist = tptr;
|
|
|
- }
|
|
|
- }
|
|
|
- if (alist)
|
|
|
- *prev = alist;
|
|
|
- else
|
|
|
- *prev = blist;
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-ck_close (fd)
|
|
|
- int fd;
|
|
|
-{
|
|
|
- if (close (fd) < 0)
|
|
|
- {
|
|
|
- msg_perror ("can't close a file #%d", fd);
|
|
|
- exit (EX_SYSTEM);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-#include <ctype.h>
|
|
|
-
|
|
|
-/* Quote_copy_string is like quote_string, but instead of modifying the
|
|
|
- string in place, it malloc-s a copy of the string, and returns that.
|
|
|
- If the string does not have to be quoted, it returns the NULL string.
|
|
|
- The allocated copy can, of course, be freed with free() after the
|
|
|
- caller is done with it.
|
|
|
- */
|
|
|
-char *
|
|
|
-quote_copy_string (string)
|
|
|
- char *string;
|
|
|
-{
|
|
|
- char *from_here;
|
|
|
- char *to_there = 0;
|
|
|
- char *copy_buf = 0;
|
|
|
- int c;
|
|
|
- int copying = 0;
|
|
|
-
|
|
|
- from_here = string;
|
|
|
- while (*from_here)
|
|
|
- {
|
|
|
- c = *from_here++;
|
|
|
- if (c == '\\')
|
|
|
- {
|
|
|
- if (!copying)
|
|
|
- {
|
|
|
- int n;
|
|
|
-
|
|
|
- n = (from_here - string) - 1;
|
|
|
- copying++;
|
|
|
- copy_buf = (char *) malloc (n + 5 + strlen (from_here) * 4);
|
|
|
- if (!copy_buf)
|
|
|
- return 0;
|
|
|
- bcopy (string, copy_buf, n);
|
|
|
- to_there = copy_buf + n;
|
|
|
- }
|
|
|
- *to_there++ = '\\';
|
|
|
- *to_there++ = '\\';
|
|
|
- }
|
|
|
- else if (isprint (c))
|
|
|
- {
|
|
|
- if (copying)
|
|
|
- *to_there++ = c;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- if (!copying)
|
|
|
- {
|
|
|
- int n;
|
|
|
-
|
|
|
- n = (from_here - string) - 1;
|
|
|
- copying++;
|
|
|
- copy_buf = (char *) malloc (n + 5 + strlen (from_here) * 4);
|
|
|
- if (!copy_buf)
|
|
|
- return 0;
|
|
|
- bcopy (string, copy_buf, n);
|
|
|
- to_there = copy_buf + n;
|
|
|
- }
|
|
|
- *to_there++ = '\\';
|
|
|
- if (c == '\n')
|
|
|
- *to_there++ = 'n';
|
|
|
- else if (c == '\t')
|
|
|
- *to_there++ = 't';
|
|
|
- else if (c == '\f')
|
|
|
- *to_there++ = 'f';
|
|
|
- else if (c == '\b')
|
|
|
- *to_there++ = 'b';
|
|
|
- else if (c == '\r')
|
|
|
- *to_there++ = 'r';
|
|
|
- else if (c == '\177')
|
|
|
- *to_there++ = '?';
|
|
|
- else
|
|
|
- {
|
|
|
- to_there[0] = (c >> 6) + '0';
|
|
|
- to_there[1] = ((c >> 3) & 07) + '0';
|
|
|
- to_there[2] = (c & 07) + '0';
|
|
|
- to_there += 3;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- if (copying)
|
|
|
- {
|
|
|
- *to_there = '\0';
|
|
|
- return copy_buf;
|
|
|
- }
|
|
|
- return (char *) 0;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/* Un_quote_string takes a quoted c-string (like those produced by
|
|
|
- quote_string or quote_copy_string and turns it back into the
|
|
|
- un-quoted original. This is done in place.
|
|
|
- */
|
|
|
-
|
|
|
-/* There is no un-quote-copy-string. Write it yourself */
|
|
|
-
|
|
|
-char *
|
|
|
-un_quote_string (string)
|
|
|
- char *string;
|
|
|
-{
|
|
|
- char *ret;
|
|
|
- char *from_here;
|
|
|
- char *to_there;
|
|
|
- int tmp;
|
|
|
-
|
|
|
- ret = string;
|
|
|
- to_there = string;
|
|
|
- from_here = string;
|
|
|
- while (*from_here)
|
|
|
- {
|
|
|
- if (*from_here != '\\')
|
|
|
- {
|
|
|
- if (from_here != to_there)
|
|
|
- *to_there++ = *from_here++;
|
|
|
- else
|
|
|
- from_here++, to_there++;
|
|
|
- continue;
|
|
|
- }
|
|
|
- switch (*++from_here)
|
|
|
- {
|
|
|
- case '\\':
|
|
|
- *to_there++ = *from_here++;
|
|
|
- break;
|
|
|
- case 'n':
|
|
|
- *to_there++ = '\n';
|
|
|
- from_here++;
|
|
|
- break;
|
|
|
- case 't':
|
|
|
- *to_there++ = '\t';
|
|
|
- from_here++;
|
|
|
- break;
|
|
|
- case 'f':
|
|
|
- *to_there++ = '\f';
|
|
|
- from_here++;
|
|
|
- break;
|
|
|
- case 'b':
|
|
|
- *to_there++ = '\b';
|
|
|
- from_here++;
|
|
|
- break;
|
|
|
- case 'r':
|
|
|
- *to_there++ = '\r';
|
|
|
- from_here++;
|
|
|
- break;
|
|
|
- case '?':
|
|
|
- *to_there++ = 0177;
|
|
|
- from_here++;
|
|
|
- break;
|
|
|
- case '0':
|
|
|
- case '1':
|
|
|
- case '2':
|
|
|
- case '3':
|
|
|
- case '4':
|
|
|
- case '5':
|
|
|
- case '6':
|
|
|
- case '7':
|
|
|
- tmp = *from_here - '0';
|
|
|
- from_here++;
|
|
|
- if (*from_here < '0' || *from_here > '7')
|
|
|
- {
|
|
|
- *to_there++ = tmp;
|
|
|
- break;
|
|
|
- }
|
|
|
- tmp = tmp * 8 + *from_here - '0';
|
|
|
- from_here++;
|
|
|
- if (*from_here < '0' || *from_here > '7')
|
|
|
- {
|
|
|
- *to_there++ = tmp;
|
|
|
- break;
|
|
|
- }
|
|
|
- tmp = tmp * 8 + *from_here - '0';
|
|
|
- from_here++;
|
|
|
- *to_there = tmp;
|
|
|
- break;
|
|
|
- default:
|
|
|
- ret = 0;
|
|
|
- *to_there++ = '\\';
|
|
|
- *to_there++ = *from_here++;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- if (*to_there)
|
|
|
- *to_there++ = '\0';
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-#ifndef __MSDOS__
|
|
|
-void
|
|
|
-ck_pipe (pipes)
|
|
|
- int *pipes;
|
|
|
-{
|
|
|
- if (pipe (pipes) < 0)
|
|
|
- {
|
|
|
- msg_perror ("can't open a pipe");
|
|
|
- exit (EX_SYSTEM);
|
|
|
- }
|
|
|
-}
|
|
|
-#endif /* !__MSDOS__ */
|
|
|
-
|
|
|
-#ifndef HAVE_STRSTR
|
|
|
-/*
|
|
|
- * strstr - find first occurrence of wanted in s
|
|
|
- */
|
|
|
-
|
|
|
-char * /* found string, or NULL if none */
|
|
|
-strstr (s, wanted)
|
|
|
- char *s;
|
|
|
- char *wanted;
|
|
|
-{
|
|
|
- register char *scan;
|
|
|
- register size_t len;
|
|
|
- register char firstc;
|
|
|
-
|
|
|
- if (*wanted == '\0')
|
|
|
- return (char *) 0;
|
|
|
- /*
|
|
|
- * The odd placement of the two tests is so "" is findable.
|
|
|
- * Also, we inline the first char for speed.
|
|
|
- * The ++ on scan has been moved down for optimization.
|
|
|
- */
|
|
|
- firstc = *wanted;
|
|
|
- len = strlen (wanted);
|
|
|
- for (scan = s; *scan != firstc || strncmp (scan, wanted, len) != 0;)
|
|
|
- if (*scan++ == '\0')
|
|
|
- return (char *) 0;
|
|
|
- return scan;
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* !HAVE_STRSTR */
|
|
|
-
|
|
|
-#ifndef HAVE_FTRUNCATE
|
|
|
-
|
|
|
-#ifdef F_CHSIZE
|
|
|
-int
|
|
|
-ftruncate (fd, length)
|
|
|
- int fd;
|
|
|
- off_t length;
|
|
|
-{
|
|
|
- return fcntl (fd, F_CHSIZE, length);
|
|
|
-}
|
|
|
-
|
|
|
-#else /* !F_CHSIZE */
|
|
|
-#ifdef F_FREESP
|
|
|
-/* code courtesy of William Kucharski, [email protected] */
|
|
|
-
|
|
|
-int
|
|
|
-ftruncate (fd, length)
|
|
|
- int fd; /* file descriptor */
|
|
|
- off_t length; /* length to set file to */
|
|
|
-{
|
|
|
- struct flock fl;
|
|
|
-
|
|
|
- fl.l_whence = 0;
|
|
|
- fl.l_len = 0;
|
|
|
- fl.l_start = length;
|
|
|
- fl.l_type = F_WRLCK; /* write lock on file space */
|
|
|
-
|
|
|
- /*
|
|
|
- * This relies on the UNDOCUMENTED F_FREESP argument to
|
|
|
- * fcntl(2), which truncates the file so that it ends at the
|
|
|
- * position indicated by fl.l_start.
|
|
|
- *
|
|
|
- * Will minor miracles never cease?
|
|
|
- */
|
|
|
-
|
|
|
- if (fcntl (fd, F_FREESP, &fl) < 0)
|
|
|
- return -1;
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-#else /* !F_FREESP */
|
|
|
-
|
|
|
-int
|
|
|
-ftruncate (fd, length)
|
|
|
- int fd;
|
|
|
- off_t length;
|
|
|
-{
|
|
|
- errno = EIO;
|
|
|
- return -1;
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* !F_FREESP */
|
|
|
-#endif /* !F_CHSIZE */
|
|
|
-#endif /* !HAVE_FTRUNCATE */
|
|
|
-
|
|
|
-
|
|
|
-extern FILE *msg_file;
|
|
|
-
|
|
|
-#if defined (HAVE_VPRINTF) && __STDC__
|
|
|
-#include <stdarg.h>
|
|
|
-
|
|
|
-void
|
|
|
-msg (char *str,...)
|
|
|
-{
|
|
|
- va_list args;
|
|
|
-
|
|
|
- va_start (args, str);
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- vfprintf (stderr, str, args);
|
|
|
- va_end (args);
|
|
|
- putc ('\n', stderr);
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-msg_perror (char *str,...)
|
|
|
-{
|
|
|
- va_list args;
|
|
|
- int save_e;
|
|
|
-
|
|
|
- save_e = errno;
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- va_start (args, str);
|
|
|
- vfprintf (stderr, str, args);
|
|
|
- va_end (args);
|
|
|
- errno = save_e;
|
|
|
- perror (" ");
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* HAVE_VPRINTF and __STDC__ */
|
|
|
-
|
|
|
-#if defined(HAVE_VPRINTF) && !__STDC__
|
|
|
-#include <varargs.h>
|
|
|
-void
|
|
|
-msg (str, va_alist)
|
|
|
- char *str;
|
|
|
- va_dcl
|
|
|
-{
|
|
|
- va_list args;
|
|
|
-
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- va_start (args);
|
|
|
- vfprintf (stderr, str, args);
|
|
|
- va_end (args);
|
|
|
- putc ('\n', stderr);
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-msg_perror (str, va_alist)
|
|
|
- char *str;
|
|
|
- va_dcl
|
|
|
-{
|
|
|
- va_list args;
|
|
|
- int save_e;
|
|
|
-
|
|
|
- save_e = errno;
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- va_start (args);
|
|
|
- vfprintf (stderr, str, args);
|
|
|
- va_end (args);
|
|
|
- errno = save_e;
|
|
|
- perror (" ");
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* HAVE_VPRINTF and not __STDC__ */
|
|
|
-
|
|
|
-#if !defined(HAVE_VPRINTF) && defined(HAVE_DOPRNT)
|
|
|
-void
|
|
|
-msg (str, args)
|
|
|
- char *str;
|
|
|
- int args;
|
|
|
-{
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- _doprnt (str, &args, stderr);
|
|
|
- putc ('\n', stderr);
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-msg_perror (str, args)
|
|
|
- char *str;
|
|
|
- int args;
|
|
|
-{
|
|
|
- int save_e;
|
|
|
-
|
|
|
- save_e = errno;
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- _doprnt (str, &args, stderr);
|
|
|
- errno = save_e;
|
|
|
- perror (" ");
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* !HAVE_VPRINTF and HAVE_DOPRNT */
|
|
|
-
|
|
|
-#if !defined(HAVE_VPRINTF) && !defined(HAVE_DOPRNT)
|
|
|
-void
|
|
|
-msg (str, a1, a2, a3, a4, a5, a6)
|
|
|
- char *str;
|
|
|
-{
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- fprintf (stderr, str, a1, a2, a3, a4, a5, a6);
|
|
|
- putc ('\n', stderr);
|
|
|
- fflush (stderr);
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-msg_perror (str, a1, a2, a3, a4, a5, a6)
|
|
|
- char *str;
|
|
|
-{
|
|
|
- int save_e;
|
|
|
-
|
|
|
- save_e = errno;
|
|
|
- fflush (msg_file);
|
|
|
- fprintf (stderr, "%s: ", tar);
|
|
|
- if (f_sayblock)
|
|
|
- fprintf (stderr, "rec %d: ", baserec + (ar_record - ar_block));
|
|
|
- fprintf (stderr, str, a1, a2, a3, a4, a5, a6);
|
|
|
- fprintf (stderr, ": ");
|
|
|
- errno = save_e;
|
|
|
- perror (" ");
|
|
|
-}
|
|
|
-
|
|
|
-#endif /* !HAVE_VPRINTF and !HAVE_DOPRNT */
|