[PATCH 05/14] drop task argument of audit_syscall_{entry,exit}

From: Al Viro
Date: Mon May 01 2006 - 06:29:17 EST

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From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Wed Mar 29 20:23:36 2006 -0500

... it's always current, and that's a good thing - allows simpler locking.

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

---

arch/i386/kernel/ptrace.c | 7 +++----
arch/i386/kernel/vm86.c | 2 +-
arch/ia64/kernel/ptrace.c | 4 ++--
arch/mips/kernel/ptrace.c | 4 ++--
arch/powerpc/kernel/ptrace.c | 5 ++---
arch/s390/kernel/ptrace.c | 5 ++---
arch/sparc64/kernel/ptrace.c | 5 ++---
arch/um/kernel/ptrace.c | 6 ++----
arch/x86_64/kernel/ptrace.c | 6 +++---
include/linux/audit.h | 8 ++++----
kernel/auditsc.c | 8 ++++----
11 files changed, 27 insertions(+), 33 deletions(-)

5411be59db80333039386f3b1ccfe5eb9023a916
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index 506462e..fd7eaf7 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -671,7 +671,7 @@ int do_syscall_trace(struct pt_regs *reg

if (unlikely(current->audit_context)) {
if (entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->eax),
+ audit_syscall_exit(AUDITSC_RESULT(regs->eax),
regs->eax);
/* Debug traps, when using PTRACE_SINGLESTEP, must be sent only
* on the syscall exit path. Normally, when TIF_SYSCALL_AUDIT is
@@ -720,14 +720,13 @@ int do_syscall_trace(struct pt_regs *reg
ret = is_sysemu;
out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current, AUDIT_ARCH_I386, regs->orig_eax,
+ audit_syscall_entry(AUDIT_ARCH_I386, regs->orig_eax,
regs->ebx, regs->ecx, regs->edx, regs->esi);
if (ret == 0)
return 0;

regs->orig_eax = -1; /* force skip of syscall restarting */
if (unlikely(current->audit_context))
- audit_syscall_exit(current, AUDITSC_RESULT(regs->eax),
- regs->eax);
+ audit_syscall_exit(AUDITSC_RESULT(regs->eax), regs->eax);
return 1;
}
diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
index aee14fa..00e0118 100644
--- a/arch/i386/kernel/vm86.c
+++ b/arch/i386/kernel/vm86.c
@@ -312,7 +312,7 @@ static void do_sys_vm86(struct kernel_vm

/*call audit_syscall_exit since we do not exit via the normal paths */
if (unlikely(current->audit_context))
- audit_syscall_exit(current, AUDITSC_RESULT(eax), eax);
+ audit_syscall_exit(AUDITSC_RESULT(eax), eax);

__asm__ __volatile__(
"movl %0,%%esp\n\t"
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 9887c87..e61e15e 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1644,7 +1644,7 @@ syscall_trace_enter (long arg0, long arg
arch = AUDIT_ARCH_IA64;
}

- audit_syscall_entry(current, arch, syscall, arg0, arg1, arg2, arg3);
+ audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
}

}
@@ -1662,7 +1662,7 @@ syscall_trace_leave (long arg0, long arg

if (success != AUDITSC_SUCCESS)
result = -result;
- audit_syscall_exit(current, success, result);
+ audit_syscall_exit(success, result);
}

if (test_thread_flag(TIF_SYSCALL_TRACE)
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index f3106d0..9b4733c 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -483,7 +483,7 @@ #endif
asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
{
if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->regs[2]),
+ audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]),
regs->regs[2]);

if (!(current->ptrace & PT_PTRACED))
@@ -507,7 +507,7 @@ asmlinkage void do_syscall_trace(struct
}
out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current, audit_arch(), regs->regs[2],
+ audit_syscall_entry(audit_arch(), regs->regs[2],
regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]);
}
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index bcb8357..4a677d1 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -538,7 +538,7 @@ #endif
do_syscall_trace();

if (unlikely(current->audit_context))
- audit_syscall_entry(current,
+ audit_syscall_entry(
#ifdef CONFIG_PPC32
AUDIT_ARCH_PPC,
#else
@@ -556,8 +556,7 @@ #ifdef CONFIG_PPC32
#endif

if (unlikely(current->audit_context))
- audit_syscall_exit(current,
- (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
+ audit_syscall_exit((regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
regs->result);

if ((test_thread_flag(TIF_SYSCALL_TRACE)
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 37dfe33..8f36504 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -734,7 +734,7 @@ asmlinkage void
syscall_trace(struct pt_regs *regs, int entryexit)
{
if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
+ audit_syscall_exit(AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);

if (!test_thread_flag(TIF_SYSCALL_TRACE))
goto out;
@@ -761,8 +761,7 @@ syscall_trace(struct pt_regs *regs, int
}
out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current,
- test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
+ audit_syscall_entry(test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
regs->gprs[2], regs->orig_gpr2, regs->gprs[3],
regs->gprs[4], regs->gprs[5]);
}
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 49e6ded..d31975e 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -653,7 +653,7 @@ asmlinkage void syscall_trace(struct pt_
if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
result = AUDITSC_FAILURE;

- audit_syscall_exit(current, result, regs->u_regs[UREG_I0]);
+ audit_syscall_exit(result, regs->u_regs[UREG_I0]);
}

if (!(current->ptrace & PT_PTRACED))
@@ -677,8 +677,7 @@ asmlinkage void syscall_trace(struct pt_

out:
if (unlikely(current->audit_context) && !syscall_exit_p)
- audit_syscall_entry(current,
- (test_thread_flag(TIF_32BIT) ?
+ audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
AUDIT_ARCH_SPARC :
AUDIT_ARCH_SPARC64),
regs->u_regs[UREG_G1],
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 60d2eda..9a77fb3 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -275,15 +275,13 @@ void syscall_trace(union uml_pt_regs *re

if (unlikely(current->audit_context)) {
if (!entryexit)
- audit_syscall_entry(current,
- HOST_AUDIT_ARCH,
+ audit_syscall_entry(HOST_AUDIT_ARCH,
UPT_SYSCALL_NR(regs),
UPT_SYSCALL_ARG1(regs),
UPT_SYSCALL_ARG2(regs),
UPT_SYSCALL_ARG3(regs),
UPT_SYSCALL_ARG4(regs));
- else audit_syscall_exit(current,
- AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
+ else audit_syscall_exit(AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
UPT_SYSCALL_RET(regs));
}

diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index da8e790..2d50024 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -600,12 +600,12 @@ asmlinkage void syscall_trace_enter(stru

if (unlikely(current->audit_context)) {
if (test_thread_flag(TIF_IA32)) {
- audit_syscall_entry(current, AUDIT_ARCH_I386,
+ audit_syscall_entry(AUDIT_ARCH_I386,
regs->orig_rax,
regs->rbx, regs->rcx,
regs->rdx, regs->rsi);
} else {
- audit_syscall_entry(current, AUDIT_ARCH_X86_64,
+ audit_syscall_entry(AUDIT_ARCH_X86_64,
regs->orig_rax,
regs->rdi, regs->rsi,
regs->rdx, regs->r10);
@@ -616,7 +616,7 @@ asmlinkage void syscall_trace_enter(stru
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
if (unlikely(current->audit_context))
- audit_syscall_exit(current, AUDITSC_RESULT(regs->rax), regs->rax);
+ audit_syscall_exit(AUDITSC_RESULT(regs->rax), regs->rax);

if ((test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SINGLESTEP))
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 1c47c59..39fef6e 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -287,10 +287,10 @@ #ifdef CONFIG_AUDITSYSCALL
/* Public API */
extern int audit_alloc(struct task_struct *task);
extern void audit_free(struct task_struct *task);
-extern void audit_syscall_entry(struct task_struct *task, int arch,
+extern void audit_syscall_entry(int arch,
int major, unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
-extern void audit_syscall_exit(struct task_struct *task, int failed, long return_code);
+extern void audit_syscall_exit(int failed, long return_code);
extern void audit_getname(const char *name);
extern void audit_putname(const char *name);
extern void __audit_inode(const char *name, const struct inode *inode, unsigned flags);
@@ -323,8 +323,8 @@ extern int audit_set_macxattr(const char
#else
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
-#define audit_syscall_entry(t,ta,a,b,c,d,e) do { ; } while (0)
-#define audit_syscall_exit(t,f,r) do { ; } while (0)
+#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
+#define audit_syscall_exit(f,r) do { ; } while (0)
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
#define __audit_inode(n,i,f) do { ; } while (0)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index ba0ec1b..7ed82b0 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -736,10 +736,11 @@ 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(struct task_struct *tsk, int arch, int major,
+void audit_syscall_entry(int arch, 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;
enum audit_state state;

@@ -817,12 +818,11 @@ #endif
* message), then write out the syscall information. In call cases,
* free the names stored from getname().
*/
-void audit_syscall_exit(struct task_struct *tsk, int valid, long return_code)
+void audit_syscall_exit(int valid, long return_code)
{
+ struct task_struct *tsk = current;
struct audit_context *context;

- /* tsk == current */
-
get_task_struct(tsk);
task_lock(tsk);
context = audit_get_context(tsk, valid, return_code);
--
1.3.0.g0080f

-
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Next message: Al Viro: "[PATCH 09/14] audit inode patch"
Previous message: Al Viro: "[PATCH 04/14] drop gfp_mask in audit_log_exit()"
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