1 /* $Id: socket.c,v 1.6 2002/02/08 03:57:14 davem Exp $
2 * socket.c: Socket syscall emulation for Solaris 2.6+
4 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
6 * 1999-08-19 Fixed socketpair code
7 * Jason Rappleye (rappleye@ccr.buffalo.edu)
10 #include <linux/types.h>
11 #include <linux/smp_lock.h>
13 #include <linux/slab.h>
14 #include <linux/socket.h>
15 #include <linux/file.h>
16 #include <linux/net.h>
17 #include <linux/compat.h>
18 #include <net/compat.h>
21 #include <asm/uaccess.h>
22 #include <asm/string.h>
23 #include <asm/oplib.h>
24 #include <asm/idprom.h>
28 #define SOCK_SOL_STREAM 2
29 #define SOCK_SOL_DGRAM 1
30 #define SOCK_SOL_RAW 4
31 #define SOCK_SOL_RDM 5
32 #define SOCK_SOL_SEQPACKET 6
34 #define SOL_SO_SNDLOWAT 0x1003
35 #define SOL_SO_RCVLOWAT 0x1004
36 #define SOL_SO_SNDTIMEO 0x1005
37 #define SOL_SO_RCVTIMEO 0x1006
38 #define SOL_SO_STATE 0x2000
40 #define SOL_SS_NDELAY 0x040
41 #define SOL_SS_NONBLOCK 0x080
42 #define SOL_SS_ASYNC 0x100
44 #define SO_STATE 0x000e
46 static int socket_check(int family, int type)
48 if (family != PF_UNIX && family != PF_INET)
49 return -ESOCKTNOSUPPORT;
51 case SOCK_SOL_STREAM: type = SOCK_STREAM; break;
52 case SOCK_SOL_DGRAM: type = SOCK_DGRAM; break;
53 case SOCK_SOL_RAW: type = SOCK_RAW; break;
54 case SOCK_SOL_RDM: type = SOCK_RDM; break;
55 case SOCK_SOL_SEQPACKET: type = SOCK_SEQPACKET; break;
56 default: return -EINVAL;
61 static int solaris_to_linux_sockopt(int optname)
64 case SOL_SO_SNDLOWAT: optname = SO_SNDLOWAT; break;
65 case SOL_SO_RCVLOWAT: optname = SO_RCVLOWAT; break;
66 case SOL_SO_SNDTIMEO: optname = SO_SNDTIMEO; break;
67 case SOL_SO_RCVTIMEO: optname = SO_RCVTIMEO; break;
68 case SOL_SO_STATE: optname = SO_STATE; break;
74 asmlinkage int solaris_socket(int family, int type, int protocol)
76 int (*sys_socket)(int, int, int) =
77 (int (*)(int, int, int))SYS(socket);
79 type = socket_check (family, type);
80 if (type < 0) return type;
81 return sys_socket(family, type, protocol);
84 asmlinkage int solaris_socketpair(int *usockvec)
86 int (*sys_socketpair)(int, int, int, int *) =
87 (int (*)(int, int, int, int *))SYS(socketpair);
89 /* solaris socketpair really only takes one arg at the syscall
90 * level, int * usockvec. The libs apparently take care of
91 * making sure that family==AF_UNIX and type==SOCK_STREAM. The
92 * pointer we really want ends up residing in the first (and
93 * supposedly only) argument.
96 return sys_socketpair(AF_UNIX, SOCK_STREAM, 0, (int *)usockvec);
99 asmlinkage int solaris_bind(int fd, struct sockaddr *addr, int addrlen)
101 int (*sys_bind)(int, struct sockaddr *, int) =
102 (int (*)(int, struct sockaddr *, int))SUNOS(104);
104 return sys_bind(fd, addr, addrlen);
107 asmlinkage int solaris_setsockopt(int fd, int level, int optname, u32 optval, int optlen)
109 int (*sunos_setsockopt)(int, int, int, u32, int) =
110 (int (*)(int, int, int, u32, int))SUNOS(105);
112 optname = solaris_to_linux_sockopt(optname);
115 if (optname == SO_STATE)
118 return sunos_setsockopt(fd, level, optname, optval, optlen);
121 asmlinkage int solaris_getsockopt(int fd, int level, int optname, u32 optval, u32 optlen)
123 int (*sunos_getsockopt)(int, int, int, u32, u32) =
124 (int (*)(int, int, int, u32, u32))SUNOS(118);
126 optname = solaris_to_linux_sockopt(optname);
130 if (optname == SO_STATE)
131 optname = SOL_SO_STATE;
133 return sunos_getsockopt(fd, level, optname, optval, optlen);
136 asmlinkage int solaris_connect(int fd, struct sockaddr __user *addr, int addrlen)
138 int (*sys_connect)(int, struct sockaddr __user *, int) =
139 (int (*)(int, struct sockaddr __user *, int))SYS(connect);
141 return sys_connect(fd, addr, addrlen);
144 asmlinkage int solaris_accept(int fd, struct sockaddr __user *addr, int __user *addrlen)
146 int (*sys_accept)(int, struct sockaddr __user *, int __user *) =
147 (int (*)(int, struct sockaddr __user *, int __user *))SYS(accept);
149 return sys_accept(fd, addr, addrlen);
152 asmlinkage int solaris_listen(int fd, int backlog)
154 int (*sys_listen)(int, int) =
155 (int (*)(int, int))SUNOS(106);
157 return sys_listen(fd, backlog);
160 asmlinkage int solaris_shutdown(int fd, int how)
162 int (*sys_shutdown)(int, int) =
163 (int (*)(int, int))SYS(shutdown);
165 return sys_shutdown(fd, how);
168 #define MSG_SOL_OOB 0x1
169 #define MSG_SOL_PEEK 0x2
170 #define MSG_SOL_DONTROUTE 0x4
171 #define MSG_SOL_EOR 0x8
172 #define MSG_SOL_CTRUNC 0x10
173 #define MSG_SOL_TRUNC 0x20
174 #define MSG_SOL_WAITALL 0x40
175 #define MSG_SOL_DONTWAIT 0x80
177 static int solaris_to_linux_msgflags(int flags)
179 int fl = flags & (MSG_OOB|MSG_PEEK|MSG_DONTROUTE);
181 if (flags & MSG_SOL_EOR) fl |= MSG_EOR;
182 if (flags & MSG_SOL_CTRUNC) fl |= MSG_CTRUNC;
183 if (flags & MSG_SOL_TRUNC) fl |= MSG_TRUNC;
184 if (flags & MSG_SOL_WAITALL) fl |= MSG_WAITALL;
185 if (flags & MSG_SOL_DONTWAIT) fl |= MSG_DONTWAIT;
189 static int linux_to_solaris_msgflags(int flags)
191 int fl = flags & (MSG_OOB|MSG_PEEK|MSG_DONTROUTE);
193 if (flags & MSG_EOR) fl |= MSG_SOL_EOR;
194 if (flags & MSG_CTRUNC) fl |= MSG_SOL_CTRUNC;
195 if (flags & MSG_TRUNC) fl |= MSG_SOL_TRUNC;
196 if (flags & MSG_WAITALL) fl |= MSG_SOL_WAITALL;
197 if (flags & MSG_DONTWAIT) fl |= MSG_SOL_DONTWAIT;
201 asmlinkage int solaris_recvfrom(int s, char __user *buf, int len, int flags, u32 from, u32 fromlen)
203 int (*sys_recvfrom)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *) =
204 (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *))SYS(recvfrom);
206 return sys_recvfrom(s, buf, len, solaris_to_linux_msgflags(flags), A(from), A(fromlen));
209 asmlinkage int solaris_recv(int s, char __user *buf, int len, int flags)
211 int (*sys_recvfrom)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *) =
212 (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *))SYS(recvfrom);
214 return sys_recvfrom(s, buf, len, solaris_to_linux_msgflags(flags), NULL, NULL);
217 asmlinkage int solaris_sendto(int s, char __user *buf, int len, int flags, u32 to, u32 tolen)
219 int (*sys_sendto)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *) =
220 (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *))SYS(sendto);
222 return sys_sendto(s, buf, len, solaris_to_linux_msgflags(flags), A(to), A(tolen));
225 asmlinkage int solaris_send(int s, char *buf, int len, int flags)
227 int (*sys_sendto)(int, void *, size_t, unsigned, struct sockaddr *, int *) =
228 (int (*)(int, void *, size_t, unsigned, struct sockaddr *, int *))SYS(sendto);
230 return sys_sendto(s, buf, len, solaris_to_linux_msgflags(flags), NULL, NULL);
233 asmlinkage int solaris_getpeername(int fd, struct sockaddr *addr, int *addrlen)
235 int (*sys_getpeername)(int, struct sockaddr *, int *) =
236 (int (*)(int, struct sockaddr *, int *))SYS(getpeername);
238 return sys_getpeername(fd, addr, addrlen);
241 asmlinkage int solaris_getsockname(int fd, struct sockaddr *addr, int *addrlen)
243 int (*sys_getsockname)(int, struct sockaddr *, int *) =
244 (int (*)(int, struct sockaddr *, int *))SYS(getsockname);
246 return sys_getsockname(fd, addr, addrlen);
249 /* XXX This really belongs in some header file... -DaveM */
250 #define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
251 16 for IP, 16 for IPX,
253 about 80 for AX.25 */
269 unsigned char cmsg_data[0];
272 static inline int msghdr_from_user32_to_kern(struct msghdr *kmsg,
273 struct sol_nmsghdr __user *umsg)
275 u32 tmp1, tmp2, tmp3;
278 err = get_user(tmp1, &umsg->msg_name);
279 err |= __get_user(tmp2, &umsg->msg_iov);
280 err |= __get_user(tmp3, &umsg->msg_control);
284 kmsg->msg_name = A(tmp1);
285 kmsg->msg_iov = A(tmp2);
286 kmsg->msg_control = A(tmp3);
288 err = get_user(kmsg->msg_namelen, &umsg->msg_namelen);
289 err |= get_user(kmsg->msg_controllen, &umsg->msg_controllen);
290 err |= get_user(kmsg->msg_flags, &umsg->msg_flags);
292 kmsg->msg_flags = solaris_to_linux_msgflags(kmsg->msg_flags);
297 asmlinkage int solaris_sendmsg(int fd, struct sol_nmsghdr __user *user_msg, unsigned user_flags)
300 char address[MAX_SOCK_ADDR];
301 struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
302 unsigned char ctl[sizeof(struct cmsghdr) + 20];
303 unsigned char *ctl_buf = ctl;
304 struct msghdr msg_sys;
305 int err, ctl_len, iov_size, total_len;
308 if (msghdr_from_user32_to_kern(&msg_sys, user_msg))
311 sock = sockfd_lookup(fd, &err);
315 /* do not move before msg_sys is valid */
317 if (msg_sys.msg_iovlen > UIO_MAXIOV)
320 /* Check whether to allocate the iovec area*/
322 iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
323 if (msg_sys.msg_iovlen > UIO_FASTIOV) {
324 iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
329 err = verify_compat_iovec(&msg_sys, iov, address, VERIFY_READ);
335 if (msg_sys.msg_controllen > INT_MAX)
338 ctl_len = msg_sys.msg_controllen;
340 struct sol_cmsghdr __user *ucmsg = msg_sys.msg_control;
341 unsigned long *kcmsg;
345 if (ctl_len <= sizeof(compat_size_t))
348 if (ctl_len > sizeof(ctl)) {
350 ctl_buf = kmalloc(ctl_len, GFP_KERNEL);
354 __get_user(cmlen, &ucmsg->cmsg_len);
355 kcmsg = (unsigned long *) ctl_buf;
356 *kcmsg++ = (unsigned long)cmlen;
358 if (copy_from_user(kcmsg, &ucmsg->cmsg_level,
359 ctl_len - sizeof(compat_size_t)))
361 msg_sys.msg_control = ctl_buf;
363 msg_sys.msg_flags = solaris_to_linux_msgflags(user_flags);
365 if (sock->file->f_flags & O_NONBLOCK)
366 msg_sys.msg_flags |= MSG_DONTWAIT;
367 err = sock_sendmsg(sock, &msg_sys, total_len);
371 sock_kfree_s(sock->sk, ctl_buf, ctl_len);
374 sock_kfree_s(sock->sk, iov, iov_size);
381 asmlinkage int solaris_recvmsg(int fd, struct sol_nmsghdr __user *user_msg, unsigned int user_flags)
384 struct iovec iovstack[UIO_FASTIOV];
385 struct iovec *iov = iovstack;
386 struct msghdr msg_sys;
387 unsigned long cmsg_ptr;
388 int err, iov_size, total_len, len;
390 /* kernel mode address */
391 char addr[MAX_SOCK_ADDR];
393 /* user mode address pointers */
394 struct sockaddr __user *uaddr;
395 int __user *uaddr_len;
397 if (msghdr_from_user32_to_kern(&msg_sys, user_msg))
400 sock = sockfd_lookup(fd, &err);
405 if (msg_sys.msg_iovlen > UIO_MAXIOV)
408 /* Check whether to allocate the iovec area*/
410 iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
411 if (msg_sys.msg_iovlen > UIO_FASTIOV) {
412 iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
418 * Save the user-mode address (verify_iovec will change the
419 * kernel msghdr to use the kernel address space)
422 uaddr = (void __user *) msg_sys.msg_name;
423 uaddr_len = &user_msg->msg_namelen;
424 err = verify_compat_iovec(&msg_sys, iov, addr, VERIFY_WRITE);
429 cmsg_ptr = (unsigned long) msg_sys.msg_control;
430 msg_sys.msg_flags = MSG_CMSG_COMPAT;
432 if (sock->file->f_flags & O_NONBLOCK)
433 user_flags |= MSG_DONTWAIT;
435 err = sock_recvmsg(sock, &msg_sys, total_len, user_flags);
442 err = move_addr_to_user(addr, msg_sys.msg_namelen, uaddr, uaddr_len);
446 err = __put_user(linux_to_solaris_msgflags(msg_sys.msg_flags), &user_msg->msg_flags);
449 err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
450 &user_msg->msg_controllen);
457 sock_kfree_s(sock->sk, iov, iov_size);