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sortix--sortix/libc/tmpfile.cpp
Jonas 'Sortie' Termansen 8cc4c6cb03 Add tmpfile(3).
2013-12-17 14:30:31 +01:00

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C++

/*******************************************************************************
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 <http://www.gnu.org/licenses/>.
tmpfile.cpp
Opens an unnamed temporary file.
*******************************************************************************/
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
extern "C" FILE* tmpfile()
{
char name[5 + sizeof(pid_t) * 3];
snprintf(name, sizeof(name), "/tmp/%ju", (uintmax_t) getpid());
FILE* ret = fopen(name, "w+");
if ( !ret )
return NULL;
unlink(name);
return ret;
}