Import sources from 2011-03-30 iso image

1 files changed, 31 insertions, 0 deletions

diff --git a/sys/src/libc/port/mktemp.c b/sys/src/libc/port/mktemp.c
new file mode 100755
index 000000000..384d7fcf7
--- /dev/null
+++ b/sys/src/libc/port/mktemp.c
@@ -0,0 +1,31 @@
+#include <u.h>
+#include <libc.h>
+
+char*
+mktemp(char *as)
+{
+	char *s;
+	unsigned pid;
+	int i;
+	char err[ERRMAX];
+
+	pid = getpid();
+	s = as;
+	while(*s++)
+		;
+	s--;
+	while(*--s == 'X') {
+		*s = pid % 10 + '0';
+		pid = pid/10;
+	}
+	s++;
+	i = 'a';
+	while(access(as, 0) != -1) {
+		if (i == 'z')
+			return "/";
+		*s = i++;
+	}
+	err[0] = '\0';
+	errstr(err, sizeof err);	/* clear the error */
+	return as;
+}