Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak...

[pandora-kernel.git] / arch / x86 / ia32 / ia32entry.S

diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 23d146c..e4bd179 100644 (file)
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -15,6 +15,16 @@
 #include <asm/irqflags.h>
 #include <linux/linkage.h>
 
+/* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
+#include <linux/elf-em.h>
+#define AUDIT_ARCH_I386                (EM_386|__AUDIT_ARCH_LE)
+#define __AUDIT_ARCH_LE           0x40000000
+
+#ifndef CONFIG_AUDITSYSCALL
+#define sysexit_audit int_ret_from_sys_call
+#define sysretl_audit int_ret_from_sys_call
+#endif
+
 #define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
 
        .macro IA32_ARG_FIXUP noebp=0
@@ -148,13 +158,15 @@ ENTRY(ia32_sysenter_target)
        ja      ia32_badsys
 sysenter_do_call:
        IA32_ARG_FIXUP 1
+sysenter_dispatch:
        call    *ia32_sys_call_table(,%rax,8)
        movq    %rax,RAX-ARGOFFSET(%rsp)
        GET_THREAD_INFO(%r10)
        DISABLE_INTERRUPTS(CLBR_NONE)
        TRACE_IRQS_OFF
        testl   $_TIF_ALLWORK_MASK,TI_flags(%r10)
-       jnz     int_ret_from_sys_call
+       jnz     sysexit_audit
+sysexit_from_sys_call:
        andl    $~TS_COMPAT,TI_status(%r10)
        /* clear IF, that popfq doesn't enable interrupts early */
        andl  $~0x200,EFLAGS-R11(%rsp) 
@@ -170,9 +182,63 @@ sysenter_do_call:
        TRACE_IRQS_ON
        ENABLE_INTERRUPTS_SYSEXIT32
 
-sysenter_tracesys:
+#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 */
+       call audit_syscall_entry
+       movl RAX-ARGOFFSET(%rsp),%eax   /* reload syscall number */
+       cmpl $(IA32_NR_syscalls-1),%eax
+       ja ia32_badsys
+       movl %ebx,%edi                  /* reload 1st syscall arg */
+       movl RCX-ARGOFFSET(%rsp),%esi   /* reload 2nd syscall arg */
+       movl RDX-ARGOFFSET(%rsp),%edx   /* reload 3rd syscall arg */
+       movl RSI-ARGOFFSET(%rsp),%ecx   /* reload 4th syscall arg */
+       movl RDI-ARGOFFSET(%rsp),%r8d   /* reload 5th syscall arg */
+       .endm
+
+       .macro auditsys_exit exit
+       testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
+       jnz int_ret_from_sys_call
+       TRACE_IRQS_ON
+       sti
+       movl %eax,%esi          /* second arg, syscall return value */
+       cmpl $0,%eax            /* is it < 0? */
+       setl %al                /* 1 if so, 0 if not */
+       movzbl %al,%edi         /* zero-extend that into %edi */
+       inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
+       call audit_syscall_exit
+       GET_THREAD_INFO(%r10)
+       movl RAX-ARGOFFSET(%rsp),%eax   /* reload syscall return value */
+       movl RBP-ARGOFFSET(%rsp),%ebp   /* reload user register value */
+       movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
+       cli
+       TRACE_IRQS_OFF
+       testl %edi,TI_flags(%r10)
+       jnz int_with_check
+       jmp \exit
+       .endm
+
+sysenter_auditsys:
        CFI_RESTORE_STATE
+       auditsys_entry_common
+       movl %ebp,%r9d                  /* reload 6th syscall arg */
+       jmp sysenter_dispatch
+
+sysexit_audit:
+       auditsys_exit sysexit_from_sys_call
+#endif
+
+sysenter_tracesys:
        xchgl   %r9d,%ebp
+#ifdef CONFIG_AUDITSYSCALL
+       testl   $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
+       jz      sysenter_auditsys
+#endif
        SAVE_REST
        CLEAR_RREGS
        movq    %r9,R9(%rsp)
@@ -252,13 +318,15 @@ cstar_do_call:
        cmpl $IA32_NR_syscalls-1,%eax
        ja  ia32_badsys
        IA32_ARG_FIXUP 1
+cstar_dispatch:
        call *ia32_sys_call_table(,%rax,8)
        movq %rax,RAX-ARGOFFSET(%rsp)
        GET_THREAD_INFO(%r10)
        DISABLE_INTERRUPTS(CLBR_NONE)
        TRACE_IRQS_OFF
        testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
-       jnz  int_ret_from_sys_call
+       jnz sysretl_audit
+sysretl_from_sys_call:
        andl $~TS_COMPAT,TI_status(%r10)
        RESTORE_ARGS 1,-ARG_SKIP,1,1,1
        movl RIP-ARGOFFSET(%rsp),%ecx
@@ -270,8 +338,23 @@ cstar_do_call:
        CFI_RESTORE rsp
        USERGS_SYSRET32
        
-cstar_tracesys:        
+#ifdef CONFIG_AUDITSYSCALL
+cstar_auditsys:
        CFI_RESTORE_STATE
+       movl %r9d,R9-ARGOFFSET(%rsp)    /* register to be clobbered by call */
+       auditsys_entry_common
+       movl R9-ARGOFFSET(%rsp),%r9d    /* reload 6th syscall arg */
+       jmp cstar_dispatch
+
+sysretl_audit:
+       auditsys_exit sysretl_from_sys_call
+#endif
+
+cstar_tracesys:
+#ifdef CONFIG_AUDITSYSCALL
+       testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
+       jz cstar_auditsys
+#endif
        xchgl %r9d,%ebp
        SAVE_REST
        CLEAR_RREGS
@@ -743,4 +826,10 @@ ia32_sys_call_table:
        .quad sys32_fallocate
        .quad compat_sys_timerfd_settime        /* 325 */
        .quad compat_sys_timerfd_gettime
+       .quad compat_sys_signalfd4
+       .quad sys_eventfd2
+       .quad sys_epoll_create1
+       .quad sys_dup3                  /* 330 */
+       .quad sys_pipe2
+       .quad sys_inotify_init1
 ia32_syscall_end: