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