--- /dev/null
+/*-------------------------------------------------------------------------
+ *
+ * mkdtemp.c
+ * create a mode-0700 temporary directory
+ *
+ * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
+ *
+ *
+ * IDENTIFICATION
+ * src/port/mkdtemp.c
+ *
+ * This code was taken from NetBSD to provide an implementation for platforms
+ * that lack it. (Among compatibly-licensed implementations, the OpenBSD
+ * version better resists denial-of-service attacks. However, it has a
+ * cryptographic dependency.) The NetBSD copyright terms follow.
+ *-------------------------------------------------------------------------
+ */
+
+#include "c.h"
+
+#define _DIAGASSERT(x) do {} while (0)
+
+
+/* $NetBSD: gettemp.c,v 1.17 2014/01/21 19:09:48 seanb Exp $ */
+
+/*
+ * Copyright (c) 1987, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if HAVE_NBTOOL_CONFIG_H
+#include "nbtool_config.h"
+#endif
+
+#if !HAVE_NBTOOL_CONFIG_H || !HAVE_MKSTEMP || !HAVE_MKDTEMP
+
+#ifdef NOT_POSTGRESQL
+#include
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)mktemp.c 8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: gettemp.c,v 1.17 2014/01/21 19:09:48 seanb Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+#endif
+
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+#ifdef NOT_POSTGRESQL
+#if HAVE_NBTOOL_CONFIG_H
+#define GETTEMP __nbcompat_gettemp
+#else
+#include "reentrant.h"
+#include "local.h"
+#define GETTEMP __gettemp
+#endif
+#endif
+
+static int
+GETTEMP(char *path, int *doopen, int domkdir)
+{
+ char *start,
+ *trv;
+ struct stat sbuf;
+ u_int pid;
+
+ /*
+ * To guarantee multiple calls generate unique names even if the file is
+ * not created. 676 different possibilities with 7 or more X's, 26 with 6
+ * or less.
+ */
+ static char xtra[2] = "aa";
+ int xcnt = 0;
+
+ _DIAGASSERT(path != NULL);
+ /* doopen may be NULL */
+
+ pid = getpid();
+
+ /* Move to end of path and count trailing X's. */
+ for (trv = path; *trv; ++trv)
+ if (*trv == 'X')
+ xcnt++;
+ else
+ xcnt = 0;
+
+ /* Use at least one from xtra. Use 2 if more than 6 X's. */
+ if (xcnt > 0)
+ {
+ *--trv = xtra[0];
+ xcnt--;
+ }
+ if (xcnt > 5)
+ {
+ *--trv = xtra[1];
+ xcnt--;
+ }
+
+ /* Set remaining X's to pid digits with 0's to the left. */
+ for (; xcnt > 0; xcnt--)
+ {
+ *--trv = (pid % 10) + '0';
+ pid /= 10;
+ }
+
+ /* update xtra for next call. */
+ if (xtra[0] != 'z')
+ xtra[0]++;
+ else
+ {
+ xtra[0] = 'a';
+ if (xtra[1] != 'z')
+ xtra[1]++;
+ else
+ xtra[1] = 'a';
+ }
+
+ /*
+ * check the target directory; if you have six X's and it doesn't exist
+ * this runs for a *very* long time.
+ */
+ for (start = trv + 1;; --trv)
+ {
+ if (trv <= path)
+ break;
+ if (*trv == '/')
+ {
+ int e;
+
+ *trv = '\0';
+ e = stat(path, &sbuf);
+ *trv = '/';
+ if (e == -1)
+ return doopen == NULL && !domkdir;
+ if (!S_ISDIR(sbuf.st_mode))
+ {
+ errno = ENOTDIR;
+ return doopen == NULL && !domkdir;
+ }
+ break;
+ }
+ }
+
+ for (;;)
+ {
+ if (doopen)
+ {
+ if ((*doopen =
+ open(path, O_CREAT | O_EXCL | O_RDWR, 0600)) >= 0)
+ return 1;
+ if (errno != EEXIST)
+ return 0;
+ }
+ else if (domkdir)
+ {
+ if (mkdir(path, 0700) >= 0)
+ return 1;
+ if (errno != EEXIST)
+ return 0;
+ }
+ else if (lstat(path, &sbuf))
+ return errno == ENOENT ? 1 : 0;
+
+ /* tricky little algorithm for backward compatibility */
+ for (trv = start;;)
+ {
+ if (!*trv)
+ return 0;
+ if (*trv == 'z')
+ *trv++ = 'a';
+ else
+ {
+ if (isdigit((unsigned char) *trv))
+ *trv = 'a';
+ else
+ ++* trv;
+ break;
+ }
+ }
+ }
+ /* NOTREACHED */
+}
+
+#endif /* !HAVE_NBTOOL_CONFIG_H || !HAVE_MKSTEMP ||
+ * !HAVE_MKDTEMP */
+
+
+/* $NetBSD: mkdtemp.c,v 1.11 2012/03/15 18:22:30 christos Exp $ */
+
+/*
+ * Copyright (c) 1987, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if HAVE_NBTOOL_CONFIG_H
+#include "nbtool_config.h"
+#endif
+
+#if !HAVE_NBTOOL_CONFIG_H || !HAVE_MKDTEMP
+
+#ifdef NOT_POSTGRESQL
+
+#include
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)mktemp.c 8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: mkdtemp.c,v 1.11 2012/03/15 18:22:30 christos Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#if HAVE_NBTOOL_CONFIG_H
+#define GETTEMP __nbcompat_gettemp
+#else
+#include
+#include
+#include
+#include
+#include "reentrant.h"
+#include "local.h"
+#define GETTEMP __gettemp
+#endif
+
+#endif
+
+char *
+mkdtemp(char *path)
+{
+ _DIAGASSERT(path != NULL);
+
+ return GETTEMP(path, NULL, 1) ? path : NULL;
+}
+
+#endif /* !HAVE_NBTOOL_CONFIG_H || !HAVE_MKDTEMP */
projects / postgresql.git / commitdiff