1 /* $Id: socket.c,v 1.5 2001/02/13 01:16:44 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>
17 #include <asm/uaccess.h>
18 #include <asm/string.h>
19 #include <asm/oplib.h>
20 #include <asm/idprom.h>
24 #define SOCK_SOL_STREAM 2
25 #define SOCK_SOL_DGRAM 1
26 #define SOCK_SOL_RAW 4
27 #define SOCK_SOL_RDM 5
28 #define SOCK_SOL_SEQPACKET 6
30 #define SOL_SO_SNDLOWAT 0x1003
31 #define SOL_SO_RCVLOWAT 0x1004
32 #define SOL_SO_SNDTIMEO 0x1005
33 #define SOL_SO_RCVTIMEO 0x1006
34 #define SOL_SO_STATE 0x2000
36 #define SOL_SS_NDELAY 0x040
37 #define SOL_SS_NONBLOCK 0x080
38 #define SOL_SS_ASYNC 0x100
40 #define SO_STATE 0x000e
42 static int socket_check(int family, int type)
44 if (family != PF_UNIX && family != PF_INET)
45 return -ESOCKTNOSUPPORT;
47 case SOCK_SOL_STREAM: type = SOCK_STREAM; break;
48 case SOCK_SOL_DGRAM: type = SOCK_DGRAM; break;
49 case SOCK_SOL_RAW: type = SOCK_RAW; break;
50 case SOCK_SOL_RDM: type = SOCK_RDM; break;
51 case SOCK_SOL_SEQPACKET: type = SOCK_SEQPACKET; break;
52 default: return -EINVAL;
57 static int solaris_to_linux_sockopt(int optname)
60 case SOL_SO_SNDLOWAT: optname = SO_SNDLOWAT; break;
61 case SOL_SO_RCVLOWAT: optname = SO_RCVLOWAT; break;
62 case SOL_SO_SNDTIMEO: optname = SO_SNDTIMEO; break;
63 case SOL_SO_RCVTIMEO: optname = SO_RCVTIMEO; break;
64 case SOL_SO_STATE: optname = SO_STATE; break;
70 asmlinkage int solaris_socket(int family, int type, int protocol)
72 int (*sys_socket)(int, int, int) =
73 (int (*)(int, int, int))SYS(socket);
75 type = socket_check (family, type);
76 if (type < 0) return type;
77 return sys_socket(family, type, protocol);
80 asmlinkage int solaris_socketpair(int *usockvec)
82 int (*sys_socketpair)(int, int, int, int *) =
83 (int (*)(int, int, int, int *))SYS(socketpair);
85 /* solaris socketpair really only takes one arg at the syscall
86 * level, int * usockvec. The libs apparently take care of
87 * making sure that family==AF_UNIX and type==SOCK_STREAM. The
88 * pointer we really want ends up residing in the first (and
89 * supposedly only) argument.
92 return sys_socketpair(AF_UNIX, SOCK_STREAM, 0, (int *)usockvec);
95 asmlinkage int solaris_bind(int fd, struct sockaddr *addr, int addrlen)
97 int (*sys_bind)(int, struct sockaddr *, int) =
98 (int (*)(int, struct sockaddr *, int))SUNOS(104);
100 return sys_bind(fd, addr, addrlen);
103 asmlinkage int solaris_setsockopt(int fd, int level, int optname, u32 optval, int optlen)
105 int (*sunos_setsockopt)(int, int, int, u32, int) =
106 (int (*)(int, int, int, u32, int))SUNOS(105);
108 optname = solaris_to_linux_sockopt(optname);
111 if (optname == SO_STATE)
114 return sunos_setsockopt(fd, level, optname, optval, optlen);
117 asmlinkage int solaris_getsockopt(int fd, int level, int optname, u32 optval, u32 optlen)
119 int (*sunos_getsockopt)(int, int, int, u32, u32) =
120 (int (*)(int, int, int, u32, u32))SUNOS(118);
122 optname = solaris_to_linux_sockopt(optname);
126 if (optname == SO_STATE)
127 optname = SOL_SO_STATE;
129 return sunos_getsockopt(fd, level, optname, optval, optlen);
132 asmlinkage int solaris_connect(int fd, struct sockaddr *addr, int addrlen)
134 int (*sys_connect)(int, struct sockaddr *, int) =
135 (int (*)(int, struct sockaddr *, int))SYS(connect);
137 return sys_connect(fd, addr, addrlen);
140 asmlinkage int solaris_accept(int fd, struct sockaddr *addr, int *addrlen)
142 int (*sys_accept)(int, struct sockaddr *, int *) =
143 (int (*)(int, struct sockaddr *, int *))SYS(accept);
145 return sys_accept(fd, addr, addrlen);
148 asmlinkage int solaris_listen(int fd, int backlog)
150 int (*sys_listen)(int, int) =
151 (int (*)(int, int))SUNOS(106);
153 return sys_listen(fd, backlog);
156 asmlinkage int solaris_shutdown(int fd, int how)
158 int (*sys_shutdown)(int, int) =
159 (int (*)(int, int))SYS(shutdown);
161 return sys_shutdown(fd, how);
164 #define MSG_SOL_OOB 0x1
165 #define MSG_SOL_PEEK 0x2
166 #define MSG_SOL_DONTROUTE 0x4
167 #define MSG_SOL_EOR 0x8
168 #define MSG_SOL_CTRUNC 0x10
169 #define MSG_SOL_TRUNC 0x20
170 #define MSG_SOL_WAITALL 0x40
171 #define MSG_SOL_DONTWAIT 0x80
173 static int solaris_to_linux_msgflags(int flags)
175 int fl = flags & (MSG_OOB|MSG_PEEK|MSG_DONTROUTE);
177 if (flags & MSG_SOL_EOR) fl |= MSG_EOR;
178 if (flags & MSG_SOL_CTRUNC) fl |= MSG_CTRUNC;
179 if (flags & MSG_SOL_TRUNC) fl |= MSG_TRUNC;
180 if (flags & MSG_SOL_WAITALL) fl |= MSG_WAITALL;
181 if (flags & MSG_SOL_DONTWAIT) fl |= MSG_DONTWAIT;
185 static int linux_to_solaris_msgflags(int flags)
187 int fl = flags & (MSG_OOB|MSG_PEEK|MSG_DONTROUTE);
189 if (flags & MSG_EOR) fl |= MSG_SOL_EOR;
190 if (flags & MSG_CTRUNC) fl |= MSG_SOL_CTRUNC;
191 if (flags & MSG_TRUNC) fl |= MSG_SOL_TRUNC;
192 if (flags & MSG_WAITALL) fl |= MSG_SOL_WAITALL;
193 if (flags & MSG_DONTWAIT) fl |= MSG_SOL_DONTWAIT;
197 asmlinkage int solaris_recvfrom(int s, char *buf, int len, int flags, u32 from, u32 fromlen)
199 int (*sys_recvfrom)(int, void *, size_t, unsigned, struct sockaddr *, int *) =
200 (int (*)(int, void *, size_t, unsigned, struct sockaddr *, int *))SYS(recvfrom);
202 return sys_recvfrom(s, buf, len, solaris_to_linux_msgflags(flags), (struct sockaddr *)A(from), (int *)A(fromlen));
205 asmlinkage int solaris_recv(int s, char *buf, int len, int flags)
207 int (*sys_recvfrom)(int, void *, size_t, unsigned, struct sockaddr *, int *) =
208 (int (*)(int, void *, size_t, unsigned, struct sockaddr *, int *))SYS(recvfrom);
210 return sys_recvfrom(s, buf, len, solaris_to_linux_msgflags(flags), NULL, NULL);
213 asmlinkage int solaris_sendto(int s, char *buf, int len, int flags, u32 to, u32 tolen)
215 int (*sys_sendto)(int, void *, size_t, unsigned, struct sockaddr *, int *) =
216 (int (*)(int, void *, size_t, unsigned, struct sockaddr *, int *))SYS(sendto);
218 return sys_sendto(s, buf, len, solaris_to_linux_msgflags(flags), (struct sockaddr *)A(to), (int *)A(tolen));
221 asmlinkage int solaris_send(int s, char *buf, int len, int flags)
223 int (*sys_sendto)(int, void *, size_t, unsigned, struct sockaddr *, int *) =
224 (int (*)(int, void *, size_t, unsigned, struct sockaddr *, int *))SYS(sendto);
226 return sys_sendto(s, buf, len, solaris_to_linux_msgflags(flags), NULL, NULL);
229 asmlinkage int solaris_getpeername(int fd, struct sockaddr *addr, int *addrlen)
231 int (*sys_getpeername)(int, struct sockaddr *, int *) =
232 (int (*)(int, struct sockaddr *, int *))SYS(getpeername);
234 return sys_getpeername(fd, addr, addrlen);
237 asmlinkage int solaris_getsockname(int fd, struct sockaddr *addr, int *addrlen)
239 int (*sys_getsockname)(int, struct sockaddr *, int *) =
240 (int (*)(int, struct sockaddr *, int *))SYS(getsockname);
242 return sys_getsockname(fd, addr, addrlen);
245 /* XXX This really belongs in some header file... -DaveM */
246 #define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
247 16 for IP, 16 for IPX,
249 about 80 for AX.25 */
251 /* XXX These as well... */
252 extern __inline__ struct socket *socki_lookup(struct inode *inode)
254 return &inode->u.socket_i;
257 extern __inline__ struct socket *sockfd_lookup(int fd, int *err)
262 if (!(file = fget(fd))) {
267 inode = file->f_dentry->d_inode;
268 if (!inode->i_sock || !socki_lookup(inode)) {
274 return socki_lookup(inode);
277 extern __inline__ void sockfd_put(struct socket *sock)
296 unsigned char cmsg_data[0];
304 static inline int iov_from_user32_to_kern(struct iovec *kiov,
305 struct iovec32 *uiov32,
313 if(get_user(len, &uiov32->iov_len) ||
314 get_user(buf, &uiov32->iov_base)) {
319 kiov->iov_base = (void *)A(buf);
320 kiov->iov_len = (__kernel_size_t) len;
328 static inline int msghdr_from_user32_to_kern(struct msghdr *kmsg,
329 struct sol_nmsghdr *umsg)
331 u32 tmp1, tmp2, tmp3;
334 err = get_user(tmp1, &umsg->msg_name);
335 err |= __get_user(tmp2, &umsg->msg_iov);
336 err |= __get_user(tmp3, &umsg->msg_control);
340 kmsg->msg_name = (void *)A(tmp1);
341 kmsg->msg_iov = (struct iovec *)A(tmp2);
342 kmsg->msg_control = (void *)A(tmp3);
344 err = get_user(kmsg->msg_namelen, &umsg->msg_namelen);
345 err |= get_user(kmsg->msg_controllen, &umsg->msg_controllen);
346 err |= get_user(kmsg->msg_flags, &umsg->msg_flags);
348 kmsg->msg_flags = solaris_to_linux_msgflags(kmsg->msg_flags);
353 /* I've named the args so it is easy to tell whose space the pointers are in. */
354 static int verify_iovec32(struct msghdr *kern_msg, struct iovec *kern_iov,
355 char *kern_address, int mode)
359 if(kern_msg->msg_namelen) {
360 if(mode==VERIFY_READ) {
361 int err = move_addr_to_kernel(kern_msg->msg_name,
362 kern_msg->msg_namelen,
367 kern_msg->msg_name = kern_address;
369 kern_msg->msg_name = NULL;
371 if(kern_msg->msg_iovlen > UIO_FASTIOV) {
372 kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec),
378 tot_len = iov_from_user32_to_kern(kern_iov,
379 (struct iovec32 *)kern_msg->msg_iov,
380 kern_msg->msg_iovlen);
382 kern_msg->msg_iov = kern_iov;
383 else if(kern_msg->msg_iovlen > UIO_FASTIOV)
389 asmlinkage int solaris_sendmsg(int fd, struct sol_nmsghdr *user_msg, unsigned user_flags)
392 char address[MAX_SOCK_ADDR];
393 struct iovec iov[UIO_FASTIOV];
394 unsigned char ctl[sizeof(struct cmsghdr) + 20];
395 unsigned char *ctl_buf = ctl;
396 struct msghdr kern_msg;
399 if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
401 if(kern_msg.msg_iovlen > UIO_MAXIOV)
403 err = verify_iovec32(&kern_msg, iov, address, VERIFY_READ);
408 if(kern_msg.msg_controllen) {
409 struct sol_cmsghdr *ucmsg = (struct sol_cmsghdr *)kern_msg.msg_control;
410 unsigned long *kcmsg;
411 __kernel_size_t32 cmlen;
413 if (kern_msg.msg_controllen <= sizeof(__kernel_size_t32))
416 if(kern_msg.msg_controllen > sizeof(ctl)) {
418 ctl_buf = kmalloc(kern_msg.msg_controllen, GFP_KERNEL);
422 __get_user(cmlen, &ucmsg->cmsg_len);
423 kcmsg = (unsigned long *) ctl_buf;
424 *kcmsg++ = (unsigned long)cmlen;
426 if(copy_from_user(kcmsg, &ucmsg->cmsg_level,
427 kern_msg.msg_controllen - sizeof(__kernel_size_t32)))
429 kern_msg.msg_control = ctl_buf;
431 kern_msg.msg_flags = solaris_to_linux_msgflags(user_flags);
434 sock = sockfd_lookup(fd, &err);
436 if (sock->file->f_flags & O_NONBLOCK)
437 kern_msg.msg_flags |= MSG_DONTWAIT;
438 err = sock_sendmsg(sock, &kern_msg, total_len);
444 /* N.B. Use kfree here, as kern_msg.msg_controllen might change? */
448 if(kern_msg.msg_iov != iov)
449 kfree(kern_msg.msg_iov);
454 asmlinkage int solaris_recvmsg(int fd, struct sol_nmsghdr *user_msg, unsigned int user_flags)
456 struct iovec iovstack[UIO_FASTIOV];
457 struct msghdr kern_msg;
458 char addr[MAX_SOCK_ADDR];
460 struct iovec *iov = iovstack;
461 struct sockaddr *uaddr;
463 unsigned long cmsg_ptr;
464 int err, total_len, len = 0;
466 if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
468 if(kern_msg.msg_iovlen > UIO_MAXIOV)
471 uaddr = kern_msg.msg_name;
472 uaddr_len = &user_msg->msg_namelen;
473 err = verify_iovec32(&kern_msg, iov, addr, VERIFY_WRITE);
478 cmsg_ptr = (unsigned long) kern_msg.msg_control;
479 kern_msg.msg_flags = 0;
482 sock = sockfd_lookup(fd, &err);
484 if (sock->file->f_flags & O_NONBLOCK)
485 user_flags |= MSG_DONTWAIT;
486 err = sock_recvmsg(sock, &kern_msg, total_len, user_flags);
493 if(uaddr != NULL && err >= 0)
494 err = move_addr_to_user(addr, kern_msg.msg_namelen, uaddr, uaddr_len);
496 err = __put_user(linux_to_solaris_msgflags(kern_msg.msg_flags), &user_msg->msg_flags);
498 /* XXX Convert cmsg back into userspace 32-bit format... */
499 err = __put_user((unsigned long)kern_msg.msg_control - cmsg_ptr,
500 &user_msg->msg_controllen);
504 if(kern_msg.msg_iov != iov)
505 kfree(kern_msg.msg_iov);