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体验新版 GitCode,发现更多精彩内容 >>
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bb49bcda
编写于
7月 10, 2005
作者:
D
David S. Miller
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
[SPARC64]: Add SECCOMP support.
Signed-off-by:
N
David S. Miller
<
davem@davemloft.net
>
上级
af166d15
变更
5
隐藏空白更改
内联
并排
Showing
5 changed file
with
30 addition
and
15 deletion
+30
-15
arch/sparc64/Kconfig
arch/sparc64/Kconfig
+17
-0
arch/sparc64/kernel/entry.S
arch/sparc64/kernel/entry.S
+5
-5
arch/sparc64/kernel/power.c
arch/sparc64/kernel/power.c
+2
-1
arch/sparc64/kernel/ptrace.c
arch/sparc64/kernel/ptrace.c
+4
-8
include/asm-sparc64/thread_info.h
include/asm-sparc64/thread_info.h
+2
-1
未找到文件。
arch/sparc64/Kconfig
浏览文件 @
bb49bcda
...
...
@@ -43,6 +43,23 @@ config SPARC64_PAGE_SIZE_4MB
endchoice
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS
default y
help
This kernel feature is useful for number crunching applications
that may need to compute untrusted bytecode during their
execution. By using pipes or other transports made available to
the process as file descriptors supporting the read/write
syscalls, it's possible to isolate those applications in
their own address space using seccomp. Once seccomp is
enabled via /proc/<pid>/seccomp, it cannot be disabled
and the task is only allowed to execute a few safe syscalls
defined by each seccomp mode.
If unsure, say Y. Only embedded should say N here.
source kernel/Kconfig.hz
source "init/Kconfig"
...
...
arch/sparc64/kernel/entry.S
浏览文件 @
bb49bcda
...
...
@@ -1552,7 +1552,7 @@ sys_ptrace: add %sp, PTREGS_OFF, %o0
nop
.
align
32
1
:
ldx
[%
curptr
+
TI_FLAGS
],
%
l5
andcc
%
l5
,
_TIF_SYSCALL_TRACE
,
%
g0
andcc
%
l5
,
(
_TIF_SYSCALL_TRACE
|
_TIF_SECCOMP
)
,
%
g0
be
,
pt
%
icc
,
rtrap
clr
%
l6
call
syscall_trace
...
...
@@ -1676,7 +1676,7 @@ linux_sparc_syscall32:
srl
%
i5
,
0
,
%
o5
!
IEU1
srl
%
i2
,
0
,
%
o2
!
IEU0
Group
andcc
%
l0
,
_TIF_SYSCALL_TRACE
,
%
g0
!
IEU0
Group
andcc
%
l0
,
(
_TIF_SYSCALL_TRACE
|
_TIF_SECCOMP
),
%
g0
!
IEU0
Group
bne
,
pn
%
icc
,
linux_syscall_trace32
!
CTI
mov
%
i0
,
%
l5
!
IEU1
call
%
l7
!
CTI
Group
brk
forced
...
...
@@ -1699,7 +1699,7 @@ linux_sparc_syscall:
mov
%
i3
,
%
o3
!
IEU1
mov
%
i4
,
%
o4
!
IEU0
Group
andcc
%
l0
,
_TIF_SYSCALL_TRACE
,
%
g0
!
IEU1
Group
+
1
bubble
andcc
%
l0
,
(
_TIF_SYSCALL_TRACE
|
_TIF_SECCOMP
),
%
g0
!
IEU1
Group
+
1
bubble
bne
,
pn
%
icc
,
linux_syscall_trace
!
CTI
Group
mov
%
i0
,
%
l5
!
IEU0
2
:
call
%
l7
!
CTI
Group
brk
forced
...
...
@@ -1727,7 +1727,7 @@ ret_sys_call:
1
:
cmp
%
o0
,
-
ERESTART_RESTARTBLOCK
bgeu
,
pn
%
xcc
,
1
f
andcc
%
l0
,
_TIF_SYSCALL_TRACE
,
%
l6
andcc
%
l0
,
(
_TIF_SYSCALL_TRACE
|
_TIF_SECCOMP
),
%
l6
80
:
/
*
System
call
success
,
clear
Carry
condition
code
.
*/
andn
%
g3
,
%
g2
,
%
g3
...
...
@@ -1742,7 +1742,7 @@ ret_sys_call:
/
*
System
call
failure
,
set
Carry
condition
code
.
*
Also
,
get
abs
(
errno
)
to
return
to
the
process
.
*/
andcc
%
l0
,
_TIF_SYSCALL_TRACE
,
%
l6
andcc
%
l0
,
(
_TIF_SYSCALL_TRACE
|
_TIF_SECCOMP
)
,
%
l6
sub
%
g0
,
%
o0
,
%
o0
or
%
g3
,
%
g2
,
%
g3
stx
%
o0
,
[%
sp
+
PTREGS_OFF
+
PT_V9_I0
]
...
...
arch/sparc64/kernel/power.c
浏览文件 @
bb49bcda
...
...
@@ -4,6 +4,8 @@
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
*/
#define __KERNEL_SYSCALLS__
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
...
...
@@ -17,7 +19,6 @@
#include <asm/ebus.h>
#include <asm/auxio.h>
#define __KERNEL_SYSCALLS__
#include <linux/unistd.h>
/*
...
...
arch/sparc64/kernel/ptrace.c
浏览文件 @
bb49bcda
...
...
@@ -630,9 +630,9 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
asmlinkage
void
syscall_trace
(
void
)
{
#ifdef DEBUG_PTRACE
printk
(
"%s [%d]: syscall_trace
\n
"
,
current
->
comm
,
current
->
pid
);
#endif
/* do the secure computing check first */
secure_computing
(
current_thread_info
()
->
kregs
->
u_regs
[
UREG_G1
]
);
if
(
!
test_thread_flag
(
TIF_SYSCALL_TRACE
))
return
;
if
(
!
(
current
->
ptrace
&
PT_PTRACED
))
...
...
@@ -645,12 +645,8 @@ asmlinkage void syscall_trace(void)
* for normal use. strace only continues with a signal if the
* stopping signal is not SIGTRAP. -brl
*/
#ifdef DEBUG_PTRACE
printk
(
"%s [%d]: syscall_trace exit= %x
\n
"
,
current
->
comm
,
current
->
pid
,
current
->
exit_code
);
#endif
if
(
current
->
exit_code
)
{
send_sig
(
current
->
exit_code
,
current
,
1
);
send_sig
(
current
->
exit_code
,
current
,
1
);
current
->
exit_code
=
0
;
}
}
include/asm-sparc64/thread_info.h
浏览文件 @
bb49bcda
...
...
@@ -220,7 +220,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define TIF_NEWSIGNALS 6
/* wants new-style signals */
#define TIF_32BIT 7
/* 32-bit binary */
#define TIF_NEWCHILD 8
/* just-spawned child process */
/* TIF_* value 9 is available
*/
#define TIF_SECCOMP 9
/* secure computing
*/
#define TIF_POLLING_NRFLAG 10
#define TIF_SYSCALL_SUCCESS 11
/* NOTE: Thread flags >= 12 should be ones we have no interest
...
...
@@ -239,6 +239,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define _TIF_NEWSIGNALS (1<<TIF_NEWSIGNALS)
#define _TIF_32BIT (1<<TIF_32BIT)
#define _TIF_NEWCHILD (1<<TIF_NEWCHILD)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
#define _TIF_SYSCALL_SUCCESS (1<<TIF_SYSCALL_SUCCESS)
...
...
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