Re: [RFC PATCH 5/5] syscall: sys_fbind() introduced

15.08.2012 20:30, H. Peter Anvin пишет:

On 08/15/2012 09:22 AM, Stanislav Kinsbursky wrote:

quoted

This syscall allows to bind socket to specified file descriptor.
Descriptor can be gained by simple open with O_PATH flag.
Socket node can be created by sys_mknod().

Signed-off-by: Stanislav Kinsbursky <redacted>
---
   arch/x86/syscalls/syscall_32.tbl |    1 +
   arch/x86/syscalls/syscall_64.tbl |    1 +
   include/linux/syscalls.h         |    1 +
   kernel/sys_ni.c                  |    3 +++
   net/socket.c                     |   25 +++++++++++++++++++++++++
   5 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
index 7a35a6e..9594b82 100644
--- a/arch/x86/syscalls/syscall_32.tbl
+++ b/arch/x86/syscalls/syscall_32.tbl

@@ -356,3 +356,4 @@
   347	i386	process_vm_readv	sys_process_vm_readv		compat_sys_process_vm_readv
   348	i386	process_vm_writev	sys_process_vm_writev		compat_sys_process_vm_writev
   349	i386	kcmp			sys_kcmp
+350	i386	fbind			sys_fbind

i386 uses socketcalls... perhaps it shouldn't (socketcalls are pretty
much an abomination), but for socketcall-based architectures this really
should be a socketcall.

Thanks, Peter. I'll rework this.

Don't you also need fconnect()?  Or is that simply handled by allowing
open() without O_PATH?

Yes, I need it.
If this approach will be accepted, then I'll send one more patch set for fconnect.

	-hpa

-- 
Best regards,
Stanislav Kinsbursky