diff --git a/libc/Makefile b/libc/Makefile
index f7fce25e..a471c455 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -344,6 +344,7 @@ system.o \
tfork.o \
time.o \
tmpfile.o \
+tmpnam.o \
truncateat.o \
truncate.o \
ttyname.o \
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index a31e6102..f3286e52 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -44,7 +44,7 @@ typedef off_t fpos_t;
/* TODO: Implement L_ctermid */
#if __POSIX_OBSOLETE <= 200801
-/* TODO: Implement L_tmpnam */
+#define L_tmpnam 128
#endif
/* The possibilities for the third argument to `setvbuf'. */
@@ -128,6 +128,10 @@ extern int vsnprintf(char* __restrict, size_t, const char* __restrict, __gnuc_va
extern int vsprintf(char* __restrict s, const char* __restrict format, __gnuc_va_list ap);
extern int vsscanf(const char* __restrict s, const char* __restrict format, __gnuc_va_list arg);
+#if __POSIX_OBSOLETE <= 200801
+extern char* tmpnam(char* s);
+#endif
+
/* TODO: These are not implemented in sortix libc yet. */
#if defined(__SORTIX_SHOW_UNIMPLEMENTED)
extern char* ctermid(char* s);
@@ -144,7 +148,6 @@ extern void flockfile(FILE* file);
extern void funlockfile(FILE* file);
#if __POSIX_OBSOLETE <= 200801
-extern char* tmpnam(char* s);
extern char* tempnam(const char* dir, const char* pfx);
#endif
#endif
diff --git a/libc/tmpnam.cpp b/libc/tmpnam.cpp
new file mode 100644
index 00000000..cbea7d72
--- /dev/null
+++ b/libc/tmpnam.cpp
@@ -0,0 +1,41 @@
+/*******************************************************************************
+
+ Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+ This file is part of the Sortix C Library.
+
+ The Sortix C Library is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or (at your
+ option) any later version.
+
+ The Sortix C Library 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 Lesser General Public
+ License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with the Sortix C Library. If not, see .
+
+ tmpnam.cpp
+ Create path names for temporary files.
+
+*******************************************************************************/
+
+#include
+#include
+#include
+
+// TODO: Please remove this function and P_tmpdir and L_tmpnam once they have
+// been removed from the C, C++ and POSIX standards.
+extern "C" char* tmpnam(char* s)
+{
+ static char static_string[L_tmpnam+1];
+ if ( !s )
+ s = static_string;
+ static int current_index = 0;
+ // TODO: This isn't thread safe!
+ snprintf(s, L_tmpnam, "%s/tmpnam.pid%ju.%i", P_tmpdir, (uintmax_t) getpid(),
+ current_index++);
+ return s;
+}