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authorMarkos Chandras <markos.chandras@imgtec.com>2014-01-22 14:39:59 +0000
committerRalf Baechle <ralf@linux-mips.org>2014-03-26 23:09:08 +0100
commit6e34574603f633fa67cf1037aa6374292469c74f (patch)
tree6acbdca176c0e543238055998e03ef2c4144849f
parent22feadbe4c455491be5725bc7a6073b98db5db99 (diff)
downloadop-kernel-dev-6e34574603f633fa67cf1037aa6374292469c74f.zip
op-kernel-dev-6e34574603f633fa67cf1037aa6374292469c74f.tar.gz
MIPS: asm: syscall: Define syscall_get_arch
This effectively renames __syscall_get_arch to syscall_get_arch and implements a compatible interface for the seccomp API. The seccomp code (kernel/seccomp.c) expects a syscall_get_arch function to be defined for every architecture, so we drop the leading underscores from the existing function. This also makes use of the 'task' argument to determine the type the process instead of assuming the process has the same characteristics as the kernel it's running on. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6398/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/include/asm/syscall.h6
-rw-r--r--arch/mips/kernel/ptrace.c2
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h
index 2981ef5..08b639b 100644
--- a/arch/mips/include/asm/syscall.h
+++ b/arch/mips/include/asm/syscall.h
@@ -107,11 +107,13 @@ extern const unsigned long sys_call_table[];
extern const unsigned long sys32_call_table[];
extern const unsigned long sysn32_call_table[];
-static inline int __syscall_get_arch(void)
+static inline int syscall_get_arch(struct task_struct *task,
+ struct pt_regs *regs)
{
int arch = EM_MIPS;
#ifdef CONFIG_64BIT
- arch |= __AUDIT_ARCH_64BIT;
+ if (!test_tsk_thread_flag(task, TIF_32BIT_REGS))
+ arch |= __AUDIT_ARCH_64BIT;
#endif
#if defined(__LITTLE_ENDIAN)
arch |= __AUDIT_ARCH_LE;
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 7da9b76..fe5af54 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -677,7 +677,7 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->regs[2]);
- audit_syscall_entry(__syscall_get_arch(),
+ audit_syscall_entry(syscall_get_arch(current, regs),
regs->regs[2],
regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]);
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