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#ifndef foopulsememfdwrappershfoo
#define foopulsememfdwrappershfoo
/***
This file is part of PulseAudio.
Copyright 2016 Ahmed S. Darwish <darwish.07@gmail.com>
PulseAudio 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 2.1 of the
License, or (at your option) any later version.
PulseAudio 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 PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#if defined(HAVE_MEMFD) && !defined(HAVE_MEMFD_CREATE)
#include <sys/syscall.h>
#include <fcntl.h>
/*
* Before glibc version 2.27 there was no wrapper for memfd_create(2),
* so we have to provide our own.
*
* Also define memfd fcntl sealing macros. While they are already
* defined in the kernel header file <linux/fcntl.h>, that file as
* a whole conflicts with the original glibc header <fnctl.h>.
*/
static inline int memfd_create(const char *name, unsigned int flags) {
return syscall(SYS_memfd_create, name, flags);
}
/* memfd_create(2) flags */
#ifndef MFD_CLOEXEC
#define MFD_CLOEXEC 0x0001U
#endif
#ifndef MFD_ALLOW_SEALING
#define MFD_ALLOW_SEALING 0x0002U
#endif
/* fcntl() seals-related 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
#endif /* HAVE_MEMFD && !HAVE_MEMFD_CREATE */
#endif
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