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/*
* Copyright (c) 2021 Omar Polo <op@omarpolo.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* What's the deal with landlock? While distro with linux >= 5.13
* have the struct declarations, libc wrappers are missing. The
* sample landlock code provided by the authors includes these "shims"
* in their example for the landlock API until libc provides them.
*
* Linux is such a mess sometimes. /rant
*/
#ifndef LANDLOCK_SHIM_H
#define LANDLOCK_SHIM_H
#include <linux/landlock.h>
#include <linux/prctl.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <unistd.h>
#ifndef landlock_create_ruleset
static inline int
landlock_create_ruleset(const struct landlock_ruleset_attr *attr, size_t size,
__u32 flags)
{
return syscall(__NR_landlock_create_ruleset, attr, size, flags);
}
#endif
#ifndef landlock_add_rule
static inline int
landlock_add_rule(int ruleset_fd, enum landlock_rule_type type,
const void *attr, __u32 flags)
{
return syscall(__NR_landlock_add_rule, ruleset_fd, type, attr, flags);
}
#endif
#ifndef landlock_restrict_self
static inline int
landlock_restrict_self(int ruleset_fd, __u32 flags)
{
return syscall(__NR_landlock_restrict_self, ruleset_fd, flags);
}
#endif
#endif /* LANDLOCK_SHIM_H */
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