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Diffstat (limited to 'arch/x86/ia32')
-rw-r--r--arch/x86/ia32/ia32_aout.c6
-rw-r--r--arch/x86/ia32/ia32entry.S97
-rw-r--r--arch/x86/ia32/sys_ia32.c2
3 files changed, 94 insertions, 11 deletions
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index 58cccb6483b..a0e1dbe67dc 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -441,12 +441,6 @@ beyond_if:
regs->r8 = regs->r9 = regs->r10 = regs->r11 =
regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
set_fs(USER_DS);
- if (unlikely(current->ptrace & PT_PTRACED)) {
- if (current->ptrace & PT_TRACE_EXEC)
- ptrace_notify((PTRACE_EVENT_EXEC << 8) | SIGTRAP);
- else
- send_sig(SIGTRAP, current, 0);
- }
return 0;
}
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 23d146ce676..ffc1bb4fed7 100644
--- 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,ebpsave=RBP
+ 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 \ebpsave-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, RCX /* user %ebp in RCX slot */
+#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:
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index f00afdf61e6..d3c64088b98 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -238,7 +238,7 @@ asmlinkage long sys32_pipe(int __user *fd)
int retval;
int fds[2];
- retval = do_pipe(fds);
+ retval = do_pipe_flags(fds, 0);
if (retval)
goto out;
if (copy_to_user(fd, fds, sizeof(fds)))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 04:35:46 +0000