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Emulate SO_PEERCRED socket option.

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Temporarily use 0 for pid member as the FreeBSD does not cache remote
UNIX domain socket peer pid.

PR:		kern/102956
Reviewed by:	rwatson
Approved by:	kib (mentor)
MFC after:	1 month
This commit is contained in:
Dmitry Chagin 2009-05-16 18:42:18 +00:00
parent ae28ded2c8
commit d4dd69c46c
2 changed files with 26 additions and 1 deletions
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21
sys/compat/linux/linux_socket.c
View File

@ -1354,7 +1354,9 @@ linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
} */ bsd_args;
l_timeval linux_tv;
struct timeval tv;
socklen_t tv_len;
socklen_t tv_len, xulen;
struct xucred xu;
struct l_ucred lxu;
int error, name;
bsd_args.s = args->s;
@ -1377,6 +1379,23 @@ linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
sizeof(linux_tv)));
/* NOTREACHED */
break;
case LOCAL_PEERCRED:
if (args->optlen != sizeof(lxu))
return (EINVAL);
xulen = sizeof(xu);
error = kern_getsockopt(td, args->s, bsd_args.level,
name, &xu, UIO_SYSSPACE, &xulen);
if (error)
return (error);
/*
* XXX Use 0 for pid as the FreeBSD does not cache peer pid.
*/
lxu.pid = 0;
lxu.uid = xu.cr_uid;
lxu.gid = xu.cr_gid;
return (copyout(&lxu, PTRIN(args->optval), sizeof(lxu)));
/* NOTREACHED */
break;
default:
break;
}

6
sys/compat/linux/linux_socket.h
View File

@ -90,4 +90,10 @@
#define LINUX_AF_APPLETALK 5
#define LINUX_AF_INET6 10
struct l_ucred {
uint32_t pid;
uint32_t uid;
uint32_t gid;
};
#endif /* _LINUX_SOCKET_H_ */