Libc-320.tar.gz

[apple/libc.git] / stdio / FreeBSD / tempnam.c

diff --git a/stdio/FreeBSD/tempnam.c b/stdio/FreeBSD/tempnam.c
new file mode 100644 (file)
index 0000000..d4dbaa3
--- /dev/null
+++ b/stdio/FreeBSD/tempnam.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 1988, 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. 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 defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)tempnam.c  8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/stdio/tempnam.c,v 1.10 2002/03/22 21:53:04 obrien Exp $");
+
+#include <sys/param.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <paths.h>
+
+__warn_references(tempnam,
+    "warning: tempnam() possibly used unsafely; consider using mkstemp()");
+
+extern char *_mktemp(char *);
+
+char *
+tempnam(dir, pfx)
+       const char *dir, *pfx;
+{
+       int sverrno;
+       char *f, *name;
+
+       if (!(name = malloc(MAXPATHLEN)))
+               return(NULL);
+
+       if (!pfx)
+               pfx = "tmp.";
+
+       if (issetugid() == 0 && (f = getenv("TMPDIR"))) {
+               (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f,
+                   *(f + strlen(f) - 1) == '/'? "": "/", pfx);
+               if ((f = _mktemp(name)))
+                       return(f);
+       }
+
+       if ((f = (char *)dir)) {
+               (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f,
+                   *(f + strlen(f) - 1) == '/'? "": "/", pfx);
+               if ((f = _mktemp(name)))
+                       return(f);
+       }
+
+       f = P_tmpdir;
+       (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx);
+       if ((f = _mktemp(name)))
+               return(f);
+
+       f = _PATH_TMP;
+       (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx);
+       if ((f = _mktemp(name)))
+               return(f);
+
+       sverrno = errno;
+       free(name);
+       errno = sverrno;
+       return(NULL);
+}