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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/compat.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c605
1 files changed, 605 insertions, 0 deletions
diff --git a/net/compat.c b/net/compat.c
new file mode 100644
index 00000000000..be5d936dc42
--- /dev/null
+++ b/net/compat.c
@@ -0,0 +1,605 @@
+/*
+ * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
+ *
+ * Copyright (C) 2000 VA Linux Co
+ * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
+ * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 2000 Hewlett-Packard Co.
+ * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs
+ */
+
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/file.h>
+#include <linux/icmpv6.h>
+#include <linux/socket.h>
+#include <linux/syscalls.h>
+#include <linux/filter.h>
+#include <linux/compat.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/security.h>
+
+#include <net/scm.h>
+#include <net/sock.h>
+#include <asm/uaccess.h>
+#include <net/compat.h>
+
+static inline int iov_from_user_compat_to_kern(struct iovec *kiov,
+ struct compat_iovec __user *uiov32,
+ int niov)
+{
+ int tot_len = 0;
+
+ while(niov > 0) {
+ compat_uptr_t buf;
+ compat_size_t len;
+
+ if(get_user(len, &uiov32->iov_len) ||
+ get_user(buf, &uiov32->iov_base)) {
+ tot_len = -EFAULT;
+ break;
+ }
+ tot_len += len;
+ kiov->iov_base = compat_ptr(buf);
+ kiov->iov_len = (__kernel_size_t) len;
+ uiov32++;
+ kiov++;
+ niov--;
+ }
+ return tot_len;
+}
+
+int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
+{
+ compat_uptr_t tmp1, tmp2, tmp3;
+
+ if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
+ __get_user(tmp1, &umsg->msg_name) ||
+ __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
+ __get_user(tmp2, &umsg->msg_iov) ||
+ __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) ||
+ __get_user(tmp3, &umsg->msg_control) ||
+ __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
+ __get_user(kmsg->msg_flags, &umsg->msg_flags))
+ return -EFAULT;
+ kmsg->msg_name = compat_ptr(tmp1);
+ kmsg->msg_iov = compat_ptr(tmp2);
+ kmsg->msg_control = compat_ptr(tmp3);
+ return 0;
+}
+
+/* I've named the args so it is easy to tell whose space the pointers are in. */
+int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
+ char *kern_address, int mode)
+{
+ int tot_len;
+
+ if(kern_msg->msg_namelen) {
+ if(mode==VERIFY_READ) {
+ int err = move_addr_to_kernel(kern_msg->msg_name,
+ kern_msg->msg_namelen,
+ kern_address);
+ if(err < 0)
+ return err;
+ }
+ kern_msg->msg_name = kern_address;
+ } else
+ kern_msg->msg_name = NULL;
+
+ if(kern_msg->msg_iovlen > UIO_FASTIOV) {
+ kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec),
+ GFP_KERNEL);
+ if(!kern_iov)
+ return -ENOMEM;
+ }
+
+ tot_len = iov_from_user_compat_to_kern(kern_iov,
+ (struct compat_iovec __user *)kern_msg->msg_iov,
+ kern_msg->msg_iovlen);
+ if(tot_len >= 0)
+ kern_msg->msg_iov = kern_iov;
+ else if(kern_msg->msg_iovlen > UIO_FASTIOV)
+ kfree(kern_iov);
+
+ return tot_len;
+}
+
+/* Bleech... */
+#define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
+
+#define CMSG_COMPAT_DATA(cmsg) \
+ ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
+#define CMSG_COMPAT_SPACE(len) \
+ (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
+#define CMSG_COMPAT_LEN(len) \
+ (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
+
+#define CMSG_COMPAT_FIRSTHDR(msg) \
+ (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
+ (struct compat_cmsghdr __user *)((msg)->msg_control) : \
+ (struct compat_cmsghdr __user *)NULL)
+
+#define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
+ ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
+ (ucmlen) <= (unsigned long) \
+ ((mhdr)->msg_controllen - \
+ ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
+
+static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
+ struct compat_cmsghdr __user *cmsg, int cmsg_len)
+{
+ char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
+ if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
+ msg->msg_controllen)
+ return NULL;
+ return (struct compat_cmsghdr __user *)ptr;
+}
+
+/* There is a lot of hair here because the alignment rules (and
+ * thus placement) of cmsg headers and length are different for
+ * 32-bit apps. -DaveM
+ */
+int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg,
+ unsigned char *stackbuf, int stackbuf_size)
+{
+ struct compat_cmsghdr __user *ucmsg;
+ struct cmsghdr *kcmsg, *kcmsg_base;
+ compat_size_t ucmlen;
+ __kernel_size_t kcmlen, tmp;
+
+ kcmlen = 0;
+ kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
+ ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
+ while(ucmsg != NULL) {
+ if(get_user(ucmlen, &ucmsg->cmsg_len))
+ return -EFAULT;
+
+ /* Catch bogons. */
+ if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
+ return -EINVAL;
+
+ tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
+ CMSG_ALIGN(sizeof(struct cmsghdr)));
+ kcmlen += tmp;
+ ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
+ }
+ if(kcmlen == 0)
+ return -EINVAL;
+
+ /* The kcmlen holds the 64-bit version of the control length.
+ * It may not be modified as we do not stick it into the kmsg
+ * until we have successfully copied over all of the data
+ * from the user.
+ */
+ if(kcmlen > stackbuf_size)
+ kcmsg_base = kcmsg = kmalloc(kcmlen, GFP_KERNEL);
+ if(kcmsg == NULL)
+ return -ENOBUFS;
+
+ /* Now copy them over neatly. */
+ memset(kcmsg, 0, kcmlen);
+ ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
+ while(ucmsg != NULL) {
+ __get_user(ucmlen, &ucmsg->cmsg_len);
+ tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
+ CMSG_ALIGN(sizeof(struct cmsghdr)));
+ kcmsg->cmsg_len = tmp;
+ __get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level);
+ __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type);
+
+ /* Copy over the data. */
+ if(copy_from_user(CMSG_DATA(kcmsg),
+ CMSG_COMPAT_DATA(ucmsg),
+ (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg)))))
+ goto out_free_efault;
+
+ /* Advance. */
+ kcmsg = (struct cmsghdr *)((char *)kcmsg + CMSG_ALIGN(tmp));
+ ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
+ }
+
+ /* Ok, looks like we made it. Hook it up and return success. */
+ kmsg->msg_control = kcmsg_base;
+ kmsg->msg_controllen = kcmlen;
+ return 0;
+
+out_free_efault:
+ if(kcmsg_base != (struct cmsghdr *)stackbuf)
+ kfree(kcmsg_base);
+ return -EFAULT;
+}
+
+int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
+{
+ struct compat_timeval ctv;
+ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
+ struct compat_cmsghdr cmhdr;
+ int cmlen;
+
+ if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
+ kmsg->msg_flags |= MSG_CTRUNC;
+ return 0; /* XXX: return error? check spec. */
+ }
+
+ if (level == SOL_SOCKET && type == SO_TIMESTAMP) {
+ struct timeval *tv = (struct timeval *)data;
+ ctv.tv_sec = tv->tv_sec;
+ ctv.tv_usec = tv->tv_usec;
+ data = &ctv;
+ len = sizeof(struct compat_timeval);
+ }
+
+ cmlen = CMSG_COMPAT_LEN(len);
+ if(kmsg->msg_controllen < cmlen) {
+ kmsg->msg_flags |= MSG_CTRUNC;
+ cmlen = kmsg->msg_controllen;
+ }
+ cmhdr.cmsg_level = level;
+ cmhdr.cmsg_type = type;
+ cmhdr.cmsg_len = cmlen;
+
+ if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
+ return -EFAULT;
+ if(copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
+ return -EFAULT;
+ cmlen = CMSG_COMPAT_SPACE(len);
+ kmsg->msg_control += cmlen;
+ kmsg->msg_controllen -= cmlen;
+ return 0;
+}
+
+void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
+{
+ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
+ int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
+ int fdnum = scm->fp->count;
+ struct file **fp = scm->fp->fp;
+ int __user *cmfptr;
+ int err = 0, i;
+
+ if (fdnum < fdmax)
+ fdmax = fdnum;
+
+ for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
+ int new_fd;
+ err = security_file_receive(fp[i]);
+ if (err)
+ break;
+ err = get_unused_fd();
+ if (err < 0)
+ break;
+ new_fd = err;
+ err = put_user(new_fd, cmfptr);
+ if (err) {
+ put_unused_fd(new_fd);
+ break;
+ }
+ /* Bump the usage count and install the file. */
+ get_file(fp[i]);
+ fd_install(new_fd, fp[i]);
+ }
+
+ if (i > 0) {
+ int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
+ if (!err)
+ err = put_user(SOL_SOCKET, &cm->cmsg_level);
+ if (!err)
+ err = put_user(SCM_RIGHTS, &cm->cmsg_type);
+ if (!err)
+ err = put_user(cmlen, &cm->cmsg_len);
+ if (!err) {
+ cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
+ kmsg->msg_control += cmlen;
+ kmsg->msg_controllen -= cmlen;
+ }
+ }
+ if (i < fdnum)
+ kmsg->msg_flags |= MSG_CTRUNC;
+
+ /*
+ * All of the files that fit in the message have had their
+ * usage counts incremented, so we just free the list.
+ */
+ __scm_destroy(scm);
+}
+
+/*
+ * For now, we assume that the compatibility and native version
+ * of struct ipt_entry are the same - sfr. FIXME
+ */
+struct compat_ipt_replace {
+ char name[IPT_TABLE_MAXNAMELEN];
+ u32 valid_hooks;
+ u32 num_entries;
+ u32 size;
+ u32 hook_entry[NF_IP_NUMHOOKS];
+ u32 underflow[NF_IP_NUMHOOKS];
+ u32 num_counters;
+ compat_uptr_t counters; /* struct ipt_counters * */
+ struct ipt_entry entries[0];
+};
+
+static int do_netfilter_replace(int fd, int level, int optname,
+ char __user *optval, int optlen)
+{
+ struct compat_ipt_replace __user *urepl;
+ struct ipt_replace __user *repl_nat;
+ char name[IPT_TABLE_MAXNAMELEN];
+ u32 origsize, tmp32, num_counters;
+ unsigned int repl_nat_size;
+ int ret;
+ int i;
+ compat_uptr_t ucntrs;
+
+ urepl = (struct compat_ipt_replace __user *)optval;
+ if (get_user(origsize, &urepl->size))
+ return -EFAULT;
+
+ /* Hack: Causes ipchains to give correct error msg --RR */
+ if (optlen != sizeof(*urepl) + origsize)
+ return -ENOPROTOOPT;
+
+ /* XXX Assumes that size of ipt_entry is the same both in
+ * native and compat environments.
+ */
+ repl_nat_size = sizeof(*repl_nat) + origsize;
+ repl_nat = compat_alloc_user_space(repl_nat_size);
+
+ ret = -EFAULT;
+ if (put_user(origsize, &repl_nat->size))
+ goto out;
+
+ if (!access_ok(VERIFY_READ, urepl, optlen) ||
+ !access_ok(VERIFY_WRITE, repl_nat, optlen))
+ goto out;
+
+ if (__copy_from_user(name, urepl->name, sizeof(urepl->name)) ||
+ __copy_to_user(repl_nat->name, name, sizeof(repl_nat->name)))
+ goto out;
+
+ if (__get_user(tmp32, &urepl->valid_hooks) ||
+ __put_user(tmp32, &repl_nat->valid_hooks))
+ goto out;
+
+ if (__get_user(tmp32, &urepl->num_entries) ||
+ __put_user(tmp32, &repl_nat->num_entries))
+ goto out;
+
+ if (__get_user(num_counters, &urepl->num_counters) ||
+ __put_user(num_counters, &repl_nat->num_counters))
+ goto out;
+
+ if (__get_user(ucntrs, &urepl->counters) ||
+ __put_user(compat_ptr(ucntrs), &repl_nat->counters))
+ goto out;
+
+ if (__copy_in_user(&repl_nat->entries[0],
+ &urepl->entries[0],
+ origsize))
+ goto out;
+
+ for (i = 0; i < NF_IP_NUMHOOKS; i++) {
+ if (__get_user(tmp32, &urepl->hook_entry[i]) ||
+ __put_user(tmp32, &repl_nat->hook_entry[i]) ||
+ __get_user(tmp32, &urepl->underflow[i]) ||
+ __put_user(tmp32, &repl_nat->underflow[i]))
+ goto out;
+ }
+
+ /*
+ * Since struct ipt_counters just contains two u_int64_t members
+ * we can just do the access_ok check here and pass the (converted)
+ * pointer into the standard syscall. We hope that the pointer is
+ * not misaligned ...
+ */
+ if (!access_ok(VERIFY_WRITE, compat_ptr(ucntrs),
+ num_counters * sizeof(struct ipt_counters)))
+ goto out;
+
+
+ ret = sys_setsockopt(fd, level, optname,
+ (char __user *)repl_nat, repl_nat_size);
+
+out:
+ return ret;
+}
+
+/*
+ * A struct sock_filter is architecture independent.
+ */
+struct compat_sock_fprog {
+ u16 len;
+ compat_uptr_t filter; /* struct sock_filter * */
+};
+
+static int do_set_attach_filter(int fd, int level, int optname,
+ char __user *optval, int optlen)
+{
+ struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
+ struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
+ compat_uptr_t ptr;
+ u16 len;
+
+ if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) ||
+ !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) ||
+ __get_user(len, &fprog32->len) ||
+ __get_user(ptr, &fprog32->filter) ||
+ __put_user(len, &kfprog->len) ||
+ __put_user(compat_ptr(ptr), &kfprog->filter))
+ return -EFAULT;
+
+ return sys_setsockopt(fd, level, optname, (char __user *)kfprog,
+ sizeof(struct sock_fprog));
+}
+
+static int do_set_sock_timeout(int fd, int level, int optname, char __user *optval, int optlen)
+{
+ struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
+ struct timeval ktime;
+ mm_segment_t old_fs;
+ int err;
+
+ if (optlen < sizeof(*up))
+ return -EINVAL;
+ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
+ __get_user(ktime.tv_sec, &up->tv_sec) ||
+ __get_user(ktime.tv_usec, &up->tv_usec))
+ return -EFAULT;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_setsockopt(fd, level, optname, (char *) &ktime, sizeof(ktime));
+ set_fs(old_fs);
+
+ return err;
+}
+
+asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
+ char __user *optval, int optlen)
+{
+ /* SO_SET_REPLACE seems to be the same in all levels */
+ if (optname == IPT_SO_SET_REPLACE)
+ return do_netfilter_replace(fd, level, optname,
+ optval, optlen);
+ if (level == SOL_SOCKET && optname == SO_ATTACH_FILTER)
+ return do_set_attach_filter(fd, level, optname,
+ optval, optlen);
+ if (level == SOL_SOCKET &&
+ (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
+ return do_set_sock_timeout(fd, level, optname, optval, optlen);
+
+ return sys_setsockopt(fd, level, optname, optval, optlen);
+}
+
+static int do_get_sock_timeout(int fd, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ struct compat_timeval __user *up;
+ struct timeval ktime;
+ mm_segment_t old_fs;
+ int len, err;
+
+ up = (struct compat_timeval __user *) optval;
+ if (get_user(len, optlen))
+ return -EFAULT;
+ if (len < sizeof(*up))
+ return -EINVAL;
+ len = sizeof(ktime);
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_getsockopt(fd, level, optname, (char *) &ktime, &len);
+ set_fs(old_fs);
+
+ if (!err) {
+ if (put_user(sizeof(*up), optlen) ||
+ !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
+ __put_user(ktime.tv_sec, &up->tv_sec) ||
+ __put_user(ktime.tv_usec, &up->tv_usec))
+ err = -EFAULT;
+ }
+ return err;
+}
+
+asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ if (level == SOL_SOCKET &&
+ (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
+ return do_get_sock_timeout(fd, level, optname, optval, optlen);
+ return sys_getsockopt(fd, level, optname, optval, optlen);
+}
+
+/* Argument list sizes for compat_sys_socketcall */
+#define AL(x) ((x) * sizeof(u32))
+static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
+ AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
+ AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
+#undef AL
+
+asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
+{
+ return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
+}
+
+asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags)
+{
+ return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
+}
+
+asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
+{
+ int ret;
+ u32 a[6];
+ u32 a0, a1;
+
+ if (call < SYS_SOCKET || call > SYS_RECVMSG)
+ return -EINVAL;
+ if (copy_from_user(a, args, nas[call]))
+ return -EFAULT;
+ a0 = a[0];
+ a1 = a[1];
+
+ switch(call) {
+ case SYS_SOCKET:
+ ret = sys_socket(a0, a1, a[2]);
+ break;
+ case SYS_BIND:
+ ret = sys_bind(a0, compat_ptr(a1), a[2]);
+ break;
+ case SYS_CONNECT:
+ ret = sys_connect(a0, compat_ptr(a1), a[2]);
+ break;
+ case SYS_LISTEN:
+ ret = sys_listen(a0, a1);
+ break;
+ case SYS_ACCEPT:
+ ret = sys_accept(a0, compat_ptr(a1), compat_ptr(a[2]));
+ break;
+ case SYS_GETSOCKNAME:
+ ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
+ break;
+ case SYS_GETPEERNAME:
+ ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
+ break;
+ case SYS_SOCKETPAIR:
+ ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
+ break;
+ case SYS_SEND:
+ ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
+ break;
+ case SYS_SENDTO:
+ ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
+ break;
+ case SYS_RECV:
+ ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]);
+ break;
+ case SYS_RECVFROM:
+ ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5]));
+ break;
+ case SYS_SHUTDOWN:
+ ret = sys_shutdown(a0,a1);
+ break;
+ case SYS_SETSOCKOPT:
+ ret = compat_sys_setsockopt(a0, a1, a[2],
+ compat_ptr(a[3]), a[4]);
+ break;
+ case SYS_GETSOCKOPT:
+ ret = compat_sys_getsockopt(a0, a1, a[2],
+ compat_ptr(a[3]), compat_ptr(a[4]));
+ break;
+ case SYS_SENDMSG:
+ ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
+ break;
+ case SYS_RECVMSG:
+ ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}