syscall-list.h 1.44 KB
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

#ifndef foosyscalllisthfoo
#define foosyscalllisthfoo

/***
  This file is part of systemd.

  Copyright 2012 Lennart Poettering

  systemd 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.

  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/

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#if defined __x86_64__ && defined __ILP32__
/* The x32 ABI defines all of its syscalls with bit 30 set, which causes
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   issues when attempting to use syscalls as simple indices into an array.
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   Instead, use the syscall id & ~SYSCALL_MASK as the index, and | the
   internal id with the syscall mask as needed.
*/
#include <asm/unistd.h>
#define SYSCALL_TO_INDEX(x) ((x) & ~__X32_SYSCALL_BIT)
#define INDEX_TO_SYSCALL(x) ((x) | __X32_SYSCALL_BIT)
#else
#define SYSCALL_TO_INDEX(x) (x)
#define INDEX_TO_SYSCALL(x) (x)
#endif

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const char *syscall_to_name(int id);
int syscall_from_name(const char *name);

int syscall_max(void);

#endif