FreeBSD/Linux Kernel Cross Reference
sys/compat/netbsd32/netbsd32_compat_43.c

     /*      $NetBSD: netbsd32_compat_43.c,v 1.50 2008/05/29 14:51:26 mrg Exp $      */
     
     /*
      * Copyright (c) 1998, 2001 Matthew R. Green
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_43.c,v 1.50 2008/05/29 14:51:26 mrg Exp $");
    
    #if defined(_KERNEL_OPT)
    #include "opt_compat_43.h"
    #endif
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/fcntl.h>
    #include <sys/filedesc.h>
    #include <sys/malloc.h>
    #include <sys/mbuf.h>
    #include <sys/mount.h>
    #include <sys/namei.h>
    #include <sys/socket.h>
    #include <sys/proc.h>
    #include <sys/socket.h>
    #include <sys/socketvar.h>
    #include <sys/stat.h>
    #include <sys/syscallargs.h>
    #include <sys/time.h>
    #include <sys/ucred.h>
    #include <sys/vfs_syscalls.h>
    #include <uvm/uvm_extern.h>
    #include <sys/sysctl.h>
    #include <sys/swap.h>
    
    #include <compat/netbsd32/netbsd32.h>
    #include <compat/netbsd32/netbsd32_syscallargs.h>
    
    #include <compat/sys/stat.h>
    #include <compat/sys/signal.h>
    #include <compat/sys/signalvar.h>
    #include <compat/sys/socket.h>
    
    #define SYS_DEF(foo) struct foo##_args; \
        int foo(struct lwp *, const struct foo##_args *, register_t *)
    
    SYS_DEF(compat_43_netbsd32_sethostid);
    SYS_DEF(compat_43_netbsd32_killpg);
    SYS_DEF(compat_43_netbsd32_sigblock);
    SYS_DEF(compat_43_netbsd32_sigblock);
    SYS_DEF(compat_43_netbsd32_sigsetmask);
    #undef SYS_DEF
    
    static void
    netbsd32_from_stat(const struct stat *sb, struct netbsd32_stat43 *sp32)
    {
    
            sp32->st_dev = sb->st_dev;
            sp32->st_ino = sb->st_ino;
            sp32->st_mode = sb->st_mode;
            sp32->st_nlink = sb->st_nlink;
            sp32->st_uid = sb->st_uid;
            sp32->st_gid = sb->st_gid;
            sp32->st_rdev = sb->st_rdev;
            sp32->st_size = sb->st_size < (quad_t)1 << 32 ? sb->st_size : -2;
            sp32->st_atimespec.tv_sec = sb->st_atimespec.tv_sec;
            sp32->st_atimespec.tv_nsec = sb->st_atimespec.tv_nsec;
            sp32->st_mtimespec.tv_sec = sb->st_mtimespec.tv_sec;
            sp32->st_mtimespec.tv_nsec = sb->st_mtimespec.tv_nsec;
            sp32->st_ctimespec.tv_sec = sb->st_ctimespec.tv_sec;
            sp32->st_ctimespec.tv_nsec = sb->st_ctimespec.tv_nsec;
            sp32->st_blksize = sb->st_blksize;
            sp32->st_blocks = sb->st_blocks;
            sp32->st_flags = sb->st_flags;
            sp32->st_gen = sb->st_gen;
    }
    
    /* file system syscalls */
   int
   compat_43_netbsd32_ocreat(struct lwp *l, const struct compat_43_netbsd32_ocreat_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(const netbsd32_charp) path;
                   syscallarg(mode_t) mode;
           } */
           struct sys_open_args  ua;
   
           NETBSD32TOP_UAP(path, const char);
           NETBSD32TO64_UAP(mode);
           SCARG(&ua, flags) = O_WRONLY | O_CREAT | O_TRUNC;
   
           return (sys_open(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_olseek(struct lwp *l, const struct compat_43_netbsd32_olseek_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) fd;
                   syscallarg(netbsd32_long) offset;
                   syscallarg(int) whence;
           } */
           struct sys_lseek_args ua;
   
           SCARG(&ua, fd) = SCARG(uap, fd);
           NETBSD32TOX_UAP(offset, long);
           NETBSD32TO64_UAP(whence);
           /* Maybe offsets > 2^32 should generate an error ? */
           return sys_lseek(l, &ua, retval);
   }
   
   int
   compat_43_netbsd32_stat43(struct lwp *l, const struct compat_43_netbsd32_stat43_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(const netbsd32_charp) path;
                   syscallarg(netbsd32_stat43p_t) ub;
           } */
           struct stat sb;
           struct netbsd32_stat43 sb32;
           int error;
   
           error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &sb);
           if (error == 0) {
                   netbsd32_from_stat(&sb, &sb32);
                   error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
           }
           return error;
   }
   
   int
   compat_43_netbsd32_lstat43(struct lwp *l, const struct compat_43_netbsd32_lstat43_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(const netbsd32_charp) path;
                   syscallarg(netbsd32_stat43p_t) ub;
           } */
           struct stat sb;
           struct netbsd32_stat43 sb32;
           int error;
   
           error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &sb);
           if (error == 0) {
                   netbsd32_from_stat(&sb, &sb32);
                   error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
           }
           return error;
   }
   
   int
   compat_43_netbsd32_fstat43(struct lwp *l, const struct compat_43_netbsd32_fstat43_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) fd;
                   syscallarg(netbsd32_stat43p_t) sb;
           } */
           struct stat sb;
           struct netbsd32_stat43 sb32;
           int error;
   
           error = do_sys_fstat(SCARG(uap, fd), &sb);
           if (error == 0) {
                   netbsd32_from_stat(&sb, &sb32);
                   error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
           }
           return error;
   }
   
   int
   compat_43_netbsd32_otruncate(struct lwp *l, const struct compat_43_netbsd32_otruncate_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(const netbsd32_charp) path;
                   syscallarg(netbsd32_long) length;
           } */
           struct sys_truncate_args ua;
   
           NETBSD32TOP_UAP(path, const char);
           NETBSD32TO64_UAP(length);
           return (sys_truncate(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_oftruncate(struct lwp *l, const struct compat_43_netbsd32_oftruncate_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) fd;
                   syscallarg(netbsd32_long) length;
           } */
           struct sys_ftruncate_args ua;
   
           NETBSD32TO64_UAP(fd);
           NETBSD32TO64_UAP(length);
           return (sys_ftruncate(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_ogetdirentries(struct lwp *l, const struct compat_43_netbsd32_ogetdirentries_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) fd;
                   syscallarg(netbsd32_charp) buf;
                   syscallarg(u_int) count;
                   syscallarg(netbsd32_longp) basep;
           } */
           struct compat_43_sys_getdirentries_args ua;
   
           NETBSD32TO64_UAP(fd);
           NETBSD32TOP_UAP(buf, char);
           NETBSD32TO64_UAP(count);
           NETBSD32TOP_UAP(basep, long);
           return (compat_43_sys_getdirentries(l, &ua, retval));
   }
   
   /* kernel syscalls */
   int
   compat_43_netbsd32_ogetkerninfo(struct lwp *l, const struct compat_43_netbsd32_ogetkerninfo_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) op;
                   syscallarg(netbsd32_charp) where;
                   syscallarg(netbsd32_intp) size;
                   syscallarg(int) arg;
           } */
           struct compat_43_sys_getkerninfo_args ua;
   
           NETBSD32TO64_UAP(op);
           NETBSD32TOP_UAP(where, char);
           NETBSD32TOP_UAP(size, int);
           NETBSD32TO64_UAP(arg);
           return (compat_43_sys_getkerninfo(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_ogethostname(struct lwp *l, const struct compat_43_netbsd32_ogethostname_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(netbsd32_charp) hostname;
                   syscallarg(u_int) len;
           } */
           int name[2];
           size_t sz;
   
           name[0] = CTL_KERN;
           name[1] = KERN_HOSTNAME;
           sz = SCARG(uap, len);
           return (old_sysctl(&name[0], 2,
               SCARG_P32(uap, hostname), &sz, 0, 0, l));
   }
   
   int
   compat_43_netbsd32_osethostname(struct lwp *l, const struct compat_43_netbsd32_osethostname_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(netbsd32_charp) hostname;
                   syscallarg(u_int) len;
           } */
           int name[2];
   
           name[0] = CTL_KERN;
           name[1] = KERN_HOSTNAME;
           return old_sysctl(&name[0], 2, 0, 0, (char *)SCARG_P32(uap,
               hostname), SCARG(uap, len), l);
   }
   
   int
   compat_43_netbsd32_sethostid(struct lwp *l, const struct compat_43_netbsd32_sethostid_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int32_t) hostid;
           } */
           struct compat_43_sys_sethostid_args ua;
   
           NETBSD32TO64_UAP(hostid);
           return (compat_43_sys_sethostid(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_ogetrlimit(struct lwp *l, const struct compat_43_netbsd32_ogetrlimit_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) which;
                   syscallarg(netbsd32_orlimitp_t) rlp;
           } */
           struct compat_43_sys_getrlimit_args ua;
   
           NETBSD32TO64_UAP(which);
           NETBSD32TOP_UAP(rlp, struct orlimit);
           return (compat_43_sys_getrlimit(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_osetrlimit(struct lwp *l, const struct compat_43_netbsd32_osetrlimit_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) which;
                   syscallarg(netbsd32_orlimitp_t) rlp;
           } */
           struct compat_43_sys_setrlimit_args ua;
   
           NETBSD32TO64_UAP(which);
           NETBSD32TOP_UAP(rlp, struct orlimit);
           return (compat_43_sys_setrlimit(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_killpg(struct lwp *l, const struct compat_43_netbsd32_killpg_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) pgid;
                   syscallarg(int) signum;
           } */
           struct compat_43_sys_killpg_args ua;
   
           NETBSD32TO64_UAP(pgid);
           NETBSD32TO64_UAP(signum);
           return (compat_43_sys_killpg(l, &ua, retval));
   }
   
   /* virtual memory syscalls */
   int
   compat_43_netbsd32_ommap(struct lwp *l, const struct compat_43_netbsd32_ommap_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(netbsd32_caddr_t) addr;
                   syscallarg(netbsd32_size_t) len;
                   syscallarg(int) prot;
                   syscallarg(int) flags;
                   syscallarg(int) fd;
                   syscallarg(netbsd32_long) pos;
           } */
           struct compat_43_sys_mmap_args ua;
   
           NETBSD32TOP_UAP(addr, void *);
           NETBSD32TOX_UAP(len, size_t);
           NETBSD32TO64_UAP(prot);
           NETBSD32TO64_UAP(flags);
           NETBSD32TO64_UAP(fd);
           NETBSD32TOX_UAP(pos, long);
           return (compat_43_sys_mmap(l, &ua, retval));
   }
   
   /* network syscalls */
   int
   compat_43_netbsd32_oaccept(struct lwp *l, const struct compat_43_netbsd32_oaccept_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) s;
                   syscallarg(netbsd32_caddr_t) name;
                   syscallarg(netbsd32_intp) anamelen;
           } */
           struct compat_43_sys_accept_args ua;
   
           NETBSD32TOX_UAP(s, int);
           NETBSD32TOP_UAP(name, void *);
           NETBSD32TOP_UAP(anamelen, int);
           return (compat_43_sys_accept(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_osend(struct lwp *l, const struct compat_43_netbsd32_osend_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) s;
                   syscallarg(netbsd32_caddr_t) buf;
                   syscallarg(int) len;
                   syscallarg(int) flags;
           } */
           struct compat_43_sys_send_args ua;
   
           NETBSD32TO64_UAP(s);
           NETBSD32TOP_UAP(buf, void *);
           NETBSD32TO64_UAP(len);
           NETBSD32TO64_UAP(flags);
           return (compat_43_sys_send(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_orecv(struct lwp *l, const struct compat_43_netbsd32_orecv_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) s;
                   syscallarg(netbsd32_caddr_t) buf;
                   syscallarg(int) len;
                   syscallarg(int) flags;
           } */
           struct compat_43_sys_recv_args ua;
   
           NETBSD32TO64_UAP(s);
           NETBSD32TOP_UAP(buf, void *);
           NETBSD32TO64_UAP(len);
           NETBSD32TO64_UAP(flags);
           return (compat_43_sys_recv(l, &ua, retval));
   }
   
   /*
    * This is a brutal clone of compat_43_sys_recvmsg().
    */
   int
   compat_43_netbsd32_orecvmsg(struct lwp *l, const struct compat_43_netbsd32_orecvmsg_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) s;
                   syscallarg(netbsd32_omsghdrp_t) msg;
                   syscallarg(int) flags;
           } */
           struct netbsd32_omsghdr omsg;
           struct msghdr msg;
           struct mbuf *from, *control;
           struct iovec *iov, aiov[UIO_SMALLIOV];
           int error;
   
           error = copyin(SCARG_P32(uap, msg), &omsg, sizeof (struct omsghdr));
           if (error)
                   return (error);
   
           if (NETBSD32PTR64(omsg.msg_accrights) == NULL)
                   omsg.msg_accrightslen = 0;
           /* it was this way in 4.4BSD */
           if (omsg.msg_accrightslen > MLEN)
                   return EINVAL;
   
           iov = netbsd32_get_iov(NETBSD32PTR64(omsg.msg_iov), omsg.msg_iovlen,
               aiov, __arraycount(aiov));
           if (iov == NULL)
                   return EFAULT;
   
           msg.msg_name    = NETBSD32PTR64(omsg.msg_name);
           msg.msg_namelen = omsg.msg_namelen;
           msg.msg_iovlen  = omsg.msg_iovlen;
           msg.msg_iov     = iov;
           msg.msg_flags   = SCARG(uap, flags) & MSG_USERFLAGS;
   
           error = do_sys_recvmsg(l, SCARG(uap, s), &msg, &from,
               NETBSD32PTR64(omsg.msg_accrights) != NULL ? &control : NULL,
               retval);
           if (error != 0)
                   return error;
   
           /*
            * If there is any control information and it's SCM_RIGHTS,
            * pass it back to the program.
            * XXX: maybe there can be more than one chunk of control data?
            */
           if (NETBSD32PTR64(omsg.msg_accrights) != NULL && control != NULL) {
                   struct cmsghdr *cmsg = mtod(control, void *);
   
                   if (cmsg->cmsg_level == SOL_SOCKET
                       && cmsg->cmsg_type == SCM_RIGHTS
                       && cmsg->cmsg_len < omsg.msg_accrightslen
                       && copyout(CMSG_DATA(cmsg),
                               NETBSD32PTR64(omsg.msg_accrights),
                               cmsg->cmsg_len) == 0) {
                           omsg.msg_accrightslen = cmsg->cmsg_len;
                           free_control_mbuf(l, control, control->m_next);
                   } else {
                           omsg.msg_accrightslen = 0;
                           free_control_mbuf(l, control, control);
                   }
           } else
                   omsg.msg_accrightslen = 0;
   
           if (from != NULL)
                   /* convert from sockaddr sa_family to osockaddr one here */
                   mtod(from, struct osockaddr *)->sa_family =
                                       mtod(from, struct sockaddr *)->sa_family;
   
           error = copyout_sockname(NETBSD32PTR64(omsg.msg_name),
               &omsg.msg_namelen, 0, from);
           if (from != NULL)
                   m_free(from);
   
           if (error != 0)
                    error = copyout(&omsg, SCARG_P32(uap, msg), sizeof(omsg));
   
           return error;
   }
   
   int
   compat_43_netbsd32_osendmsg(struct lwp *l, const struct compat_43_netbsd32_osendmsg_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) s;
                   syscallarg(netbsd32_caddr_t) msg;
                   syscallarg(int) flags;
           } */
           struct iovec *iov, aiov[UIO_SMALLIOV];
           struct netbsd32_omsghdr omsg;
           struct msghdr msg;
           int error;
           struct mbuf *nam;
           struct osockaddr *osa;
           struct sockaddr *sa;
   
           error = copyin(SCARG_P32(uap, msg), &omsg, sizeof (struct omsghdr));
           if (error != 0)
                   return (error);
   
           iov = netbsd32_get_iov(NETBSD32PTR64(omsg.msg_iov), omsg.msg_iovlen,
               aiov, __arraycount(aiov));
           if (iov == NULL)
                   return EFAULT;
   
           msg.msg_iovlen = omsg.msg_iovlen;
           msg.msg_iov = iov;
           msg.msg_flags = MSG_NAMEMBUF;
   
           error = sockargs(&nam, NETBSD32PTR64(omsg.msg_name), omsg.msg_namelen,
               MT_SONAME);
           if (error != 0)
                   goto out;
   
           sa = mtod(nam, void *);
           osa = mtod(nam, void *);
           sa->sa_family = osa->sa_family;
           sa->sa_len = omsg.msg_namelen;
   
           msg.msg_name = nam;
           msg.msg_namelen = omsg.msg_namelen;
           error = compat43_set_accrights(&msg, NETBSD32PTR64(omsg.msg_accrights),
               omsg.msg_accrightslen);
           if (error != 0) {
                   m_free(nam);
                   goto out;
           }
   
           error = do_sys_sendmsg(l, SCARG(uap, s), &msg, SCARG(uap, flags), retval);
   
       out:
           if (iov != aiov)
                   free(iov, M_TEMP);
           return (error);
   }
   
   int
   compat_43_netbsd32_orecvfrom(struct lwp *l, const struct compat_43_netbsd32_orecvfrom_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) s;
                   syscallarg(netbsd32_caddr_t) buf;
                   syscallarg(netbsd32_size_t) len;
                   syscallarg(int) flags;
                   syscallarg(netbsd32_caddr_t) from;
                   syscallarg(netbsd32_intp) fromlenaddr;
           } */
           struct compat_43_sys_recvfrom_args ua;
   
           NETBSD32TO64_UAP(s);
           NETBSD32TOP_UAP(buf, void *);
           NETBSD32TOX_UAP(len, size_t);
           NETBSD32TO64_UAP(flags);
           NETBSD32TOP_UAP(from, void *);
           NETBSD32TOP_UAP(fromlenaddr, int);
           return (compat_43_sys_recvfrom(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_ogetsockname(struct lwp *l, const struct compat_43_netbsd32_ogetsockname_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) fdec;
                   syscallarg(netbsd32_caddr_t) asa;
                   syscallarg(netbsd32_intp) alen;
           } */
           struct compat_43_sys_getsockname_args ua;
   
           NETBSD32TO64_UAP(fdec);
           NETBSD32TOP_UAP(asa, void *);
           NETBSD32TOP_UAP(alen, int *);
           return (compat_43_sys_getsockname(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_ogetpeername(struct lwp *l, const struct compat_43_netbsd32_ogetpeername_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) fdes;
                   syscallarg(netbsd32_caddr_t) asa;
                   syscallarg(netbsd32_intp) alen;
           } */
           struct compat_43_sys_getpeername_args ua;
   
           NETBSD32TO64_UAP(fdes);
           NETBSD32TOP_UAP(asa, void *);
           NETBSD32TOP_UAP(alen, int *);
           return (compat_43_sys_getpeername(l, &ua, retval));
   }
   
   /* signal syscalls */
   int
   compat_43_netbsd32_osigvec(struct lwp *l, const struct compat_43_netbsd32_osigvec_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) signum;
                   syscallarg(netbsd32_sigvecp_t) nsv;
                   syscallarg(netbsd32_sigvecp_t) osv;
           } */
           struct netbsd32_sigvec sv32;
           struct sigaction nsa, osa;
           int error;
   
           if (SCARG(uap, signum) >= 32)
                   return EINVAL;
   
           if (SCARG_P32(uap, nsv)) {
                   error = copyin(SCARG_P32(uap, nsv), &sv32, sizeof(sv32));
                   if (error)
                           return error;
                   nsa.sa_handler = NETBSD32PTR64(sv32.sv_handler);
                   nsa.sa_mask.__bits[0] = sv32.sv_mask;
                   nsa.sa_mask.__bits[1] = 0;
                   nsa.sa_mask.__bits[2] = 0;
                   nsa.sa_mask.__bits[3] = 0;
                   nsa.sa_flags = sv32.sv_flags ^ SA_RESTART;
                   error = sigaction1(l, SCARG(uap, signum), &nsa, &osa, NULL, 0);
           } else
                   error = sigaction1(l, SCARG(uap, signum), NULL, &osa, NULL, 0);
           if (error)
                   return error;
   
           if (SCARG_P32(uap, osv)) {
                   NETBSD32PTR32(sv32.sv_handler, osa.sa_handler);
                   sv32.sv_mask = osa.sa_mask.__bits[0];
                   sv32.sv_flags = osa.sa_flags ^ SA_RESTART;
                   error = copyout(&sv32, SCARG_P32(uap, osv), sizeof(sv32));
           }
   
           return error;
   }
   
   int
   compat_43_netbsd32_sigblock(struct lwp *l, const struct compat_43_netbsd32_sigblock_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) mask;
           } */
           struct compat_43_sys_sigblock_args ua;
   
           NETBSD32TO64_UAP(mask);
           return (compat_43_sys_sigblock(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_sigsetmask(struct lwp *l, const struct compat_43_netbsd32_sigsetmask_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) mask;
           } */
           struct compat_43_sys_sigsetmask_args ua;
   
           NETBSD32TO64_UAP(mask);
           return (compat_43_sys_sigsetmask(l, &ua, retval));
   }
   
   int
   compat_43_netbsd32_osigstack(struct lwp *l, const struct compat_43_netbsd32_osigstack_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(netbsd32_sigstackp_t) nss;
                   syscallarg(netbsd32_sigstackp_t) oss;
           } */
           struct netbsd32_sigstack ss32;
           struct sigaltstack nsa, osa;
           int error;
   
           if (SCARG_P32(uap, nss)) {
                   error = copyin(SCARG_P32(uap, nss), &ss32, sizeof(ss32));
                   if (error)
                           return error;
                   nsa.ss_sp = NETBSD32PTR64(ss32.ss_sp);
                   nsa.ss_size = SIGSTKSZ; /* Use the recommended size */
                   nsa.ss_flags = ss32.ss_onstack ? SS_ONSTACK : 0;
                   error = sigaltstack1(l, &nsa, &osa);
           } else
                   error = sigaltstack1(l, NULL, &osa);
           if (error)
                   return error;
   
           if (SCARG_P32(uap, oss)) {
                   NETBSD32PTR32(ss32.ss_sp, osa.ss_sp);
                   ss32.ss_onstack = (osa.ss_flags & SS_ONSTACK) != 0;
                   error = copyout(&ss32, SCARG_P32(uap, oss), sizeof(ss32));
           }
   
           return error;
   }

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