Add in tmpnam() support from David Whedon <dwhedon@gordian.com>,

rework include/stdio.h, and fix up the resultant damage.

1 files changed, 68 insertions, 0 deletions

diff --git a/libc/stdio/tmpnam.c b/libc/stdio/tmpnam.c
new file mode 100644
index 000000000..3a3ef67ca
--- /dev/null
+++ b/libc/stdio/tmpnam.c
@@ -0,0 +1,68 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * tmpnam for uClibc
+ *
+ * Copyright (C) 2000 by David Whedon <dwhedon@gordian.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, 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 Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library 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
+ *
+ * Modified by Erik Andersen <anderse@debian.org> to be reentrant for
+ * the case when S != NULL...
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+static char tmpnam_buffer[L_tmpnam];
+
+
+/* Generate a unique filename in /tmp */
+char * tmpnam (char *s)
+{
+    int num __attribute__ ((unused));       /* UNINITIALIZED, so we get whatever crap
+					     happens to be in memory, producing (in theory)
+					     pseudo-random tmpname results... */
+    int n2;
+    char buf[L_tmpnam], *ptr;
+    struct stat statbuf;
+    unsigned char l, i;
+
+    ptr=s ?  s : buf;
+
+    l = snprintf(ptr, L_tmpnam, "%s/tmp.", P_tmpdir);
+
+again:
+    n2 = num;
+    for (i = l ; i < l + 6; i++) {
+	ptr[i] = '0' + n2 % 10;
+	n2 /= 10;
+    }
+
+    if (stat (ptr, &statbuf) == 0){
+	num++;
+	goto again;
+    }
+
+    if (s == NULL)
+	return (char *) memcpy (tmpnam_buffer, ptr, L_tmpnam);
+
+    return ptr;
+}
+