diff options
Diffstat (limited to 'include/asm-generic/syscall.h')
-rw-r--r-- | include/asm-generic/syscall.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/asm-generic/syscall.h b/include/asm-generic/syscall.h index ea8087b55ffc..5c122ae6bfa6 100644 --- a/include/asm-generic/syscall.h +++ b/include/asm-generic/syscall.h | |||
@@ -1,7 +1,7 @@ | |||
1 | /* | 1 | /* |
2 | * Access to user system call parameters and results | 2 | * Access to user system call parameters and results |
3 | * | 3 | * |
4 | * Copyright (C) 2008 Red Hat, Inc. All rights reserved. | 4 | * Copyright (C) 2008-2009 Red Hat, Inc. All rights reserved. |
5 | * | 5 | * |
6 | * This copyrighted material is made available to anyone wishing to use, | 6 | * This copyrighted material is made available to anyone wishing to use, |
7 | * modify, copy, or redistribute it subject to the terms and conditions | 7 | * modify, copy, or redistribute it subject to the terms and conditions |
@@ -32,9 +32,13 @@ struct pt_regs; | |||
32 | * If @task is not executing a system call, i.e. it's blocked | 32 | * If @task is not executing a system call, i.e. it's blocked |
33 | * inside the kernel for a fault or signal, returns -1. | 33 | * inside the kernel for a fault or signal, returns -1. |
34 | * | 34 | * |
35 | * Note this returns int even on 64-bit machines. Only 32 bits of | ||
36 | * system call number can be meaningful. If the actual arch value | ||
37 | * is 64 bits, this truncates to 32 bits so 0xffffffff means -1. | ||
38 | * | ||
35 | * It's only valid to call this when @task is known to be blocked. | 39 | * It's only valid to call this when @task is known to be blocked. |
36 | */ | 40 | */ |
37 | long syscall_get_nr(struct task_struct *task, struct pt_regs *regs); | 41 | int syscall_get_nr(struct task_struct *task, struct pt_regs *regs); |
38 | 42 | ||
39 | /** | 43 | /** |
40 | * syscall_rollback - roll back registers after an aborted system call | 44 | * syscall_rollback - roll back registers after an aborted system call |