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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 08:29:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 08:29:57 -0700 |
| commit | 547ad5ac665234953e32678f6a32385b58edefc3 (patch) | |
| tree | 4c7aa651224d2b106a2f9da6dfb8b4233173cec2 /include/asm-generic | |
| parent | jbd.h: bitfields should be unsigned (diff) | |
| parent | x86: ptrace: set TS_COMPAT when 32-bit ptrace sets orig_eax>=0 (diff) | |
| download | linux-dev-547ad5ac665234953e32678f6a32385b58edefc3.tar.xz linux-dev-547ad5ac665234953e32678f6a32385b58edefc3.zip | |
Merge branch 'x86/orig_ax' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland
* 'x86/orig_ax' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
x86: ptrace: set TS_COMPAT when 32-bit ptrace sets orig_eax>=0
x86: ptrace: do not sign-extend orig_ax on write
x86: syscall_get_nr returns int
asm-generic: syscall_get_nr returns int
Diffstat (limited to 'include/asm-generic')
| -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 @@ /* * 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 |