commit d35fecb8fc8458463883abd05bbcb1a6105feaaf
Author: Thierry FOURNIER <thierry>
Date:   Thu Sep 19 16:52:40 2013 +0200

    BUILTIN: Add builtin names mkstemp, it is a mktemp like
    
    mkstemp -p <directory> [-o <var>]
    The mkstemp utility build unique temporary file. The `-p' is
    mandatory parameter, it's specify the path into the file is
    created. If the `-o' flag is set, return the file in shell
    variable names <var> in place of stdout.
    
    This function return 0 if no error encountered, else return 1.

diff --git ./builtins/Makefile.in ./builtins/Makefile.in
index 0ba3427..e625f6d 100644
--- ./builtins/Makefile.in
+++ ./builtins/Makefile.in
@@ -124,6 +124,7 @@ DEFSRC =  $(srcdir)/alias.def $(srcdir)/bind.def $(srcdir)/break.def \
 	  $(srcdir)/usleep.def \
 	  $(srcdir)/sendlog.def \
 	  $(srcdir)/fgets.def \
+	  $(srcdir)/mkstemp.def \
 	  $(srcdir)/builtin.def $(srcdir)/caller.def \
 	  $(srcdir)/cd.def $(srcdir)/colon.def \
 	  $(srcdir)/command.def $(srcdir)/declare.def $(srcdir)/echo.def \
@@ -147,6 +148,7 @@ OFILES = builtins.o \
 	usleep.o \
 	sendlog.o \
 	fgets.o \
+	mkstemp.o \
 	alias.o bind.o break.o builtin.o caller.o cd.o colon.o command.o \
 	common.o declare.o echo.o enable.o eval.o evalfile.o \
 	evalstring.o exec.o \
@@ -289,6 +291,7 @@ getopts.o: getopts.def
 reserved.o: reserved.def
 complete.o: complete.def
 sleep.o: sleep.def
+mkstemp.o: mkstemp.def
 usleep.o: usleep.def
 sendlog.o: sendlog.def
 fgets.o: fgets.def
diff --git ./builtins/mkstemp.def ./builtins/mkstemp.def
new file mode 100644
index 0000000..ad2ab3d
--- /dev/null
+++ ./builtins/mkstemp.def
@@ -0,0 +1,131 @@
+$BUILTIN mkstemp
+$FUNCTION mkstemp_builtin
+$PRODUCES mkstemp.c
+$SHORT_DOC mkstemp -p <directory> [-o <var>]
+The mkstemp utility build unique temporary file. The `-p' is
+mandatory parameter, it's specify the path into the file is
+created. If the `-o' flag is set, return the file in shell
+variable names <var> in place of stdout.
+
+This function return 0 if no error encountered, else return 1.
+$END
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "../bashtypes.h"
+#include "../shell.h"
+#include "../jobs.h"
+#include "common.h"
+#include "bashgetopt.h"
+
+#define MAXLEN 128
+#define PATTERN "tmp.XXXXXX"
+
+int mkstemp_builtin(WORD_LIST *list)
+{
+	int opt;
+	char *dir = NULL;
+	char *var = NULL;
+	char tmp[MAXLEN];
+	int len;
+	char *p;
+	int f = 0;
+	int l;
+	struct stat buf;
+
+	/* check options */
+	reset_internal_getopt();
+	while ((opt = internal_getopt (list, "p:o:")) != -1) {
+		switch (opt) {
+		case 'p':
+			dir = list_optarg;
+			break;
+		case 'o':
+			var = list_optarg;
+			break;
+		default:
+			builtin_usage();
+			return (EX_USAGE);
+		}
+	}
+
+	/* input check */
+	if (dir == NULL) {
+		builtin_usage();
+		return (EX_USAGE);
+	}
+
+	/* remove multiple / */
+	l = strlen(dir);
+	for (p = dir; *p != '\0'; p++) {
+		if (*p == '/') {
+			if (f) {
+				while (*p == '/') {
+					memmove(p, p+1, l);
+				}
+				if (*p == '\0') {
+					break;
+				}
+			} else {
+				f = 1;
+			}
+		} else {
+			f = 0;
+		}
+		l--;
+	}
+
+	/* remove final '/' */
+	p--;
+	if (p > dir && *p == '/')
+		*p = '\0';
+
+	/* make dir and check length */
+	len = snprintf(tmp, MAXLEN, "%s/" PATTERN, dir);
+	if (len >= MAXLEN) {
+		builtin_error("path name too long");
+		return 1;
+	}
+
+	/* try to create directories */
+	if (stat(tmp, &buf) == -1) {
+		p = tmp;
+		if (*p == '/')
+			p++;
+		while (1) {
+			p = strchr(p, '/');
+			if (!p)
+				break;
+
+			*p = '\0';
+			mkdir(tmp, 0777);
+			*p = '/';
+			p++;
+		}
+	}
+
+	/* build temporary file */
+	if (mkstemp(tmp) == -1) {
+		builtin_error("%s: %s", tmp, strerror(errno));
+		return 1;
+	}
+
+	/* place the result in the output var */
+	if (var)
+		bind_variable(var, tmp);
+
+	/* return the path name on stderr */
+	else
+		printf("%s\n", tmp);
+
+	return 0;
+}