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authorLennart Poettering <lennart@poettering.net>2013-11-22 14:30:52 +0100
committerLennart Poettering <lennart@poettering.net>2013-11-22 16:31:40 +0100
commitbaabc5776475f7313cdaa5f3bdb45c1c5d053f91 (patch)
treebee2f4582c1ae6e75c9d6e287bab17e69d3a1821 /src/shared/syscall-list.h
parent254ed85a8c6ff182133a9843125e541929ba8197 (diff)
build-sys: move more files from core/ to share/ that are generic enough
Diffstat (limited to 'src/shared/syscall-list.h')
-rw-r--r--src/shared/syscall-list.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/src/shared/syscall-list.h b/src/shared/syscall-list.h
new file mode 100644
index 0000000000..37efc5681d
--- /dev/null
+++ b/src/shared/syscall-list.h
@@ -0,0 +1,41 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ 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/>.
+***/
+
+#if defined __x86_64__ && defined __ILP32__
+/* The x32 ABI defines all of its syscalls with bit 30 set, which causes
+ issues when attempting to use syscalls as simple indices into an array.
+ 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
+
+const char *syscall_to_name(int id);
+int syscall_from_name(const char *name);
+
+int syscall_max(void);