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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-08-02 23:05:11 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-09-30 22:53:32 -0400 |
| commit | 6783eaa2e1253fbcbe2c2f6bb4c843abf1343caf (patch) | |
| tree | 457e7b1d54396ed31ba92b7fe7024723d26ba565 /arch/x86/kernel/entry_32.S | |
| parent | 7076aada1040de4ed79a5977dbabdb5e5ea5e249 (diff) | |
| download | linux-6783eaa2e1253fbcbe2c2f6bb4c843abf1343caf.tar.bz2 | |
x86, um/x86: switch to generic sys_execve and kernel_execve
32bit wrapper is lost on that; 64bit one is *not*, since
we need to arrange for full pt_regs on stack when we call
sys_execve() and we need to load callee-saved ones from
there afterwards.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
| -rw-r--r-- | arch/x86/kernel/entry_32.S | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index ac1107346fc9..b6bb69239296 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -298,6 +298,13 @@ ENTRY(ret_from_fork) CFI_ENDPROC END(ret_from_fork) +ENTRY(ret_from_kernel_execve) + movl %eax, %esp + movl $0,PT_EAX(%esp) + GET_THREAD_INFO(%ebp) + jmp syscall_exit +END(ret_from_kernel_execve) + /* * Interrupt exit functions should be protected against kprobes */ @@ -322,8 +329,7 @@ ret_from_intr: andl $(X86_EFLAGS_VM | SEGMENT_RPL_MASK), %eax #else /* - * We can be coming here from a syscall done in the kernel space, - * e.g. a failed kernel_execve(). + * We can be coming here from child spawned by kernel_thread(). */ movl PT_CS(%esp), %eax andl $SEGMENT_RPL_MASK, %eax @@ -727,7 +733,6 @@ ENDPROC(ptregs_##name) PTREGSCALL1(iopl) PTREGSCALL0(fork) PTREGSCALL0(vfork) -PTREGSCALL3(execve) PTREGSCALL2(sigaltstack) PTREGSCALL0(sigreturn) PTREGSCALL0(rt_sigreturn) |