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Commit 268e4671 authored by Roland McGrath's avatar Roland McGrath
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asm-generic: syscall_get_nr returns int 



Only 32 bits of system call number are meaningful, so make the
specification for syscall_get_nr() be to return int, not long.

Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
parent 7fa07729

include/asm-generic/syscall.h

+6 −2
Original line number Diff line number Diff line 
/*

 * Access to user system call parameters and results

 *

 * Copyright (C) 2008 Red Hat, Inc.  All rights reserved.

 * Copyright (C) 2008-2009 Red Hat, Inc.  All rights reserved.

 *

 * This copyrighted material is made available to anyone wishing to use,

 * modify, copy, or redistribute it subject to the terms and conditions
@@ -32,9 +32,13 @@ struct pt_regs; 
 * If @task is not executing a system call, i.e. it's blocked

 * inside the kernel for a fault or signal, returns -1.

 *

 * Note this returns int even on 64-bit machines.  Only 32 bits of

 * system call number can be meaningful.  If the actual arch value

 * is 64 bits, this truncates to 32 bits so 0xffffffff means -1.

 *

 * It's only valid to call this when @task is known to be blocked.

 */

long syscall_get_nr(struct task_struct *task, struct pt_regs *regs);

int syscall_get_nr(struct task_struct *task, struct pt_regs *regs);



/**

 * syscall_rollback - roll back registers after an aborted system call