提交 b4f0d375 编写于 作者: R Richard Guy Briggs 提交者: Eric Paris

audit: x86: drop arch from __audit_syscall_entry() interface

Since the arch is found locally in __audit_syscall_entry(), there is no need to
pass it in as a parameter.  Delete it from the parameter list.

x86* was the only arch to call __audit_syscall_entry() directly and did so from
assembly code.
Signed-off-by: NRichard Guy Briggs <rgb@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-audit@redhat.com
Signed-off-by: NEric Paris <eparis@redhat.com>

---

As this patch relies on changes in the audit tree, I think it
appropriate to send it through my tree rather than the x86 tree.
上级 a17c8b54
......@@ -186,12 +186,12 @@ sysexit_from_sys_call:
#ifdef CONFIG_AUDITSYSCALL
.macro auditsys_entry_common
movl %esi,%r9d /* 6th arg: 4th syscall arg */
movl %edx,%r8d /* 5th arg: 3rd syscall arg */
/* (already in %ecx) 4th arg: 2nd syscall arg */
movl %ebx,%edx /* 3rd arg: 1st syscall arg */
movl %eax,%esi /* 2nd arg: syscall number */
movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */
movl %esi,%r8d /* 5th arg: 4th syscall arg */
movl %ecx,%r9d /*swap with edx*/
movl %edx,%ecx /* 4th arg: 3rd syscall arg */
movl %r9d,%edx /* 3rd arg: 2nd syscall arg */
movl %ebx,%esi /* 2nd arg: 1st syscall arg */
movl %eax,%edi /* 1st arg: syscall number */
call __audit_syscall_entry
movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */
cmpq $(IA32_NR_syscalls-1),%rax
......
......@@ -449,12 +449,11 @@ sysenter_audit:
jnz syscall_trace_entry
addl $4,%esp
CFI_ADJUST_CFA_OFFSET -4
/* %esi already in 8(%esp) 6th arg: 4th syscall arg */
/* %edx already in 4(%esp) 5th arg: 3rd syscall arg */
/* %ecx already in 0(%esp) 4th arg: 2nd syscall arg */
movl %ebx,%ecx /* 3rd arg: 1st syscall arg */
movl %eax,%edx /* 2nd arg: syscall number */
movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */
movl %esi,4(%esp) /* 5th arg: 4th syscall arg */
movl %edx,(%esp) /* 4th arg: 3rd syscall arg */
/* %ecx already in %ecx 3rd arg: 2nd syscall arg */
movl %ebx,%edx /* 2nd arg: 1st syscall arg */
/* %eax already in %eax 1st arg: syscall number */
call __audit_syscall_entry
pushl_cfi %ebx
movl PT_EAX(%esp),%eax /* reload syscall number */
......
......@@ -488,12 +488,11 @@ badsys:
* jump back to the normal fast path.
*/
auditsys:
movq %r10,%r9 /* 6th arg: 4th syscall arg */
movq %rdx,%r8 /* 5th arg: 3rd syscall arg */
movq %rsi,%rcx /* 4th arg: 2nd syscall arg */
movq %rdi,%rdx /* 3rd arg: 1st syscall arg */
movq %rax,%rsi /* 2nd arg: syscall number */
movl $AUDIT_ARCH_X86_64,%edi /* 1st arg: audit arch */
movq %r10,%r8 /* 5th arg: 4th syscall arg */
movq %rdx,%rcx /* 4th arg: 3rd syscall arg */
movq %rsi,%rdx /* 3rd arg: 2nd syscall arg */
movq %rdi,%rsi /* 2nd arg: 1st syscall arg */
movq %rax,%rdi /* 1st arg: syscall number */
call __audit_syscall_entry
LOAD_ARGS 0 /* reload call-clobbered registers */
jmp system_call_fastpath
......
......@@ -115,8 +115,7 @@ extern void audit_log_session_info(struct audit_buffer *ab);
/* Public API */
extern int audit_alloc(struct task_struct *task);
extern void __audit_free(struct task_struct *task);
extern void __audit_syscall_entry(int arch,
int major, unsigned long a0, unsigned long a1,
extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
extern void __audit_syscall_exit(int ret_success, long ret_value);
extern struct filename *__audit_reusename(const __user char *uptr);
......@@ -148,7 +147,7 @@ static inline void audit_syscall_entry(int major, unsigned long a0,
unsigned long a3)
{
if (unlikely(current->audit_context))
__audit_syscall_entry(syscall_get_arch(), major, a0, a1, a2, a3);
__audit_syscall_entry(major, a0, a1, a2, a3);
}
static inline void audit_syscall_exit(void *pt_regs)
{
......
......@@ -1506,7 +1506,6 @@ void __audit_free(struct task_struct *tsk)
/**
* audit_syscall_entry - fill in an audit record at syscall entry
* @arch: architecture type
* @major: major syscall type (function)
* @a1: additional syscall register 1
* @a2: additional syscall register 2
......@@ -1521,9 +1520,8 @@ void __audit_free(struct task_struct *tsk)
* will only be written if another part of the kernel requests that it
* be written).
*/
void __audit_syscall_entry(int arch, int major,
unsigned long a1, unsigned long a2,
unsigned long a3, unsigned long a4)
void __audit_syscall_entry(int major, unsigned long a1, unsigned long a2,
unsigned long a3, unsigned long a4)
{
struct task_struct *tsk = current;
struct audit_context *context = tsk->audit_context;
......
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