kitty/glfw/memfd.h
2021-07-20 21:49:11 +05:30

54 lines
1.1 KiB
C
Vendored

/*
* Copyright (C) 2018 Kovid Goyal <kovid at kovidgoyal.net>
*
* Distributed under terms of the GPL3 license.
*/
#pragma once
#ifdef HAS_MEMFD_CREATE
#include <unistd.h>
#include <sys/syscall.h>
static inline int glfw_memfd_create(const char *name, unsigned int flags) {
return (int)syscall(__NR_memfd_create, name, flags);
}
#ifndef F_LINUX_SPECIFIC_BASE
#define F_LINUX_SPECIFIC_BASE 1024
#endif
#ifndef F_ADD_SEALS
#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
#define F_SEAL_GROW 0x0004 /* prevent file from growing */
#define F_SEAL_WRITE 0x0008 /* prevent writes */
#endif
#ifndef MFD_CLOEXEC
#define MFD_CLOEXEC 0x0001U
#define MFD_ALLOW_SEALING 0x0002U
#endif
#else
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
static inline int createTmpfileCloexec(char* tmpname)
{
int fd;
fd = mkostemp(tmpname, O_CLOEXEC);
if (fd >= 0)
unlink(tmpname);
return fd;
}
#endif