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Add tmpfile(3).

This commit is contained in:
Jonas 'Sortie' Termansen 2013-03-29 14:29:11 +01:00
parent 8b7dad7d4d
commit 8cc4c6cb03
3 changed files with 41 additions and 1 deletions
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1
libc/Makefile
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@ -325,6 +325,7 @@ sys/socket/socketpair.o \
system.o \
tfork.o \
time.o \
tmpfile.o \
truncateat.o \
truncate.o \
ttyname.o \

2
libc/include/stdio.h
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@ -117,6 +117,7 @@ extern int sortix_puts(const char* str);
extern int sprintf(char* restrict s, const char* restrict format, ...);
extern int scanf(const char* restrict format, ...);
extern int sscanf(const char* restrict s, const char* restrict format, ...);
extern FILE* tmpfile(void);
extern int ungetc(int c, FILE* stream);
extern int vfprintf(FILE* restrict stream, const char* restrict format, __gnuc_va_list ap);
extern int vfscanf(FILE* restrict stream, const char* restrict format, __gnuc_va_list arg);
@ -131,7 +132,6 @@ extern int vsscanf(const char* restrict s, const char* restrict format, __gnuc_v
extern char* ctermid(char* s);
extern FILE *fmemopen(void* restrict buf, size_t size, const char* restrict mode);
extern FILE* open_memstream(char** bufp, size_t* sizep);
extern FILE* tmpfile(void);
extern int dprintf(int fildes, const char* restrict format, ...);
extern int fgetpos(FILE* restrict stream, fpos_t* restrict pos);
extern int fsetpos(FILE* stream, const fpos_t* pos);

39
libc/tmpfile.cpp Normal file
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@ -0,0 +1,39 @@
/*******************************************************************************
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;
}