sys/compat/netbsd32/netbsd32_compat_30.c

   1 /*      $NetBSD: netbsd32_compat_30.c,v 1.28 2009/01/11 02:45:49 christos Exp $ */
   2
   3 /*
   4  * Copyright (c) 1998, 2001 Matthew R. Green
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_30.c,v 1.28 2009/01/11 02:45:49 christos Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/malloc.h>
  35 #include <sys/mount.h>
  36 #include <sys/socket.h>
  37 #include <sys/socketvar.h>
  38 #include <sys/stat.h>
  39 #include <sys/time.h>
  40 #include <sys/ktrace.h>
  41 #include <sys/resourcevar.h>
  42 #include <sys/vnode.h>
  43 #include <sys/file.h>
  44 #include <sys/filedesc.h>
  45 #include <sys/namei.h>
  46 #include <sys/statvfs.h>
  47 #include <sys/syscallargs.h>
  48 #include <sys/proc.h>
  49 #include <sys/dirent.h>
  50 #include <sys/kauth.h>
  51 #include <sys/vfs_syscalls.h>
  52
  53 #include <compat/netbsd32/netbsd32.h>
  54 #include <compat/netbsd32/netbsd32_syscallargs.h>
  55 #include <compat/netbsd32/netbsd32_conv.h>
  56 #include <compat/sys/mount.h>
  57
  58
  59 int
  60 compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval)
  61 {
  62         /* {
  63                 syscallarg(int) fd;
  64                 syscallarg(netbsd32_charp) buf;
  65                 syscallarg(netbsd32_size_t) count;
  66         } */
  67         file_t *fp;
  68         int error, done;
  69         char  *buf;
  70         netbsd32_size_t count;
  71
  72         /* Limit the size on any kernel buffers used by VOP_READDIR */
  73         count = min(MAXBSIZE, SCARG(uap, count));
  74
  75         /* fd_getvnode() will use the descriptor for us */
  76         if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0)
  77                 return (error);
  78         if ((fp->f_flag & FREAD) == 0) {
  79                 error = EBADF;
  80                 goto out;
  81         }
  82         buf = malloc(count, M_TEMP, M_WAITOK);
  83         error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0);
  84         if (error == 0) {
  85                 *retval = netbsd32_to_dirent12(buf, done);
  86                 error = copyout(buf, SCARG_P32(uap, buf), *retval);
  87         }
  88         free(buf, M_TEMP);
  89  out:
  90         fd_putfile(SCARG(uap, fd));
  91         return (error);
  92 }
  93
  94 int
  95 compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval)
  96 {
  97         /* {
  98                 syscallarg(const netbsd32_charp) path;
  99                 syscallarg(netbsd32_stat13p_t) ub;
 100         } */
 101         struct netbsd32_stat13 sb32;
 102         struct stat sb;
 103         int error;
 104         const char *path;
 105
 106         path = SCARG_P32(uap, path);
 107
 108         error = do_sys_stat(path, FOLLOW, &sb);
 109         if (error)
 110                 return (error);
 111         netbsd32_from___stat13(&sb, &sb32);
 112         error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
 113         return (error);
 114 }
 115
 116 int
 117 compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval)
 118 {
 119         /* {
 120                 syscallarg(int) fd;
 121                 syscallarg(netbsd32_stat13p_t) sb;
 122         } */
 123         struct netbsd32_stat13 sb32;
 124         struct stat ub;
 125         int error;
 126
 127         error = do_sys_fstat(SCARG(uap, fd), &ub);
 128         if (error == 0) {
 129                 netbsd32_from___stat13(&ub, &sb32);
 130                 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
 131         }
 132         return (error);
 133 }
 134
 135 int
 136 compat_30_netbsd32___lstat13(struct lwp *l, const struct compat_30_netbsd32___lstat13_args *uap, register_t *retval)
 137 {
 138         /* {
 139                 syscallarg(const netbsd32_charp) path;
 140                 syscallarg(netbsd32_stat13p_t) ub;
 141         } */
 142         struct netbsd32_stat13 sb32;
 143         struct stat sb;
 144         int error;
 145         const char *path;
 146
 147         path = SCARG_P32(uap, path);
 148
 149         error = do_sys_stat(path, NOFOLLOW, &sb);
 150         if (error)
 151                 return (error);
 152         netbsd32_from___stat13(&sb, &sb32);
 153         error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
 154         return (error);
 155 }
 156
 157 int
 158 compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval)
 159 {
 160         /* {
 161                 syscallarg(const netbsd32_fhandlep_t) fhp;
 162                 syscallarg(netbsd32_stat13p_t) sb;
 163         } */
 164         struct stat sb;
 165         struct netbsd32_stat13 sb32;
 166         int error;
 167         struct compat_30_fhandle fh;
 168         struct mount *mp;
 169         struct vnode *vp;
 170
 171         /*
 172          * Must be super user
 173          */
 174         if ((error = kauth_authorize_system(l->l_cred,
 175             KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL)))
 176                 return (error);
 177
 178         if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0)
 179                 return (error);
 180
 181         if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
 182                 return (ESTALE);
 183         if (mp->mnt_op->vfs_fhtovp == NULL)
 184                 return EOPNOTSUPP;
 185         if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp)))
 186                 return (error);
 187         error = vn_stat(vp, &sb);
 188         vput(vp);
 189         if (error)
 190                 return (error);
 191         netbsd32_from___stat13(&sb, &sb32);
 192         error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb));
 193         return (error);
 194 }
 195
 196 int
 197 compat_30_netbsd32_fhstatvfs1(struct lwp *l, const struct compat_30_netbsd32_fhstatvfs1_args *uap, register_t *retval)
 198 {
 199         /* {
 200                 syscallarg(const netbsd32_fhandlep_t) fhp;
 201                 syscallarg(netbsd32_statvfsp_t) buf;
 202                 syscallarg(int) flags;
 203         } */
 204         struct statvfs *sbuf;
 205         struct netbsd32_statvfs *s32;
 206         int error;
 207
 208         sbuf = STATVFSBUF_GET();
 209         error = do_fhstatvfs(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, sbuf,
 210             SCARG(uap, flags));
 211
 212         if (error != 0) {
 213                 s32 = malloc(sizeof *s32, M_TEMP, M_WAITOK);
 214                 netbsd32_from_statvfs(sbuf, s32);
 215                 error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32);
 216                 free(s32, M_TEMP);
 217         }
 218         STATVFSBUF_PUT(sbuf);
 219
 220         return (error);
 221 }
 222
 223 int
 224 compat_30_netbsd32_socket(struct lwp *l, const struct compat_30_netbsd32_socket_args *uap, register_t *retval)
 225 {
 226         /* {
 227                 syscallarg(int) domain;
 228                 syscallarg(int) type;
 229                 syscallarg(int) protocol;
 230         } */
 231         struct compat_30_sys_socket_args ua;
 232
 233         NETBSD32TO64_UAP(domain);
 234         NETBSD32TO64_UAP(type);
 235         NETBSD32TO64_UAP(protocol);
 236         return (compat_30_sys_socket(l, &ua, retval));
 237 }
 238
 239 int
 240 compat_30_netbsd32_getfh(struct lwp *l, const struct compat_30_netbsd32_getfh_args *uap, register_t *retval)
 241 {
 242         /* {
 243                 syscallarg(const netbsd32_charp) fname;
 244                 syscallarg(netbsd32_compat_30_fhandlep_t) fhp;
 245         } */
 246         struct compat_30_sys_getfh_args ua;
 247
 248         NETBSD32TOP_UAP(fname, const char);
 249         NETBSD32TOP_UAP(fhp, struct compat_30_fhandle);
 250         /* Lucky for us a fhandle_t doesn't change sizes */
 251         return (compat_30_sys_getfh(l, &ua, retval));
 252 }
 253
 254
 255 int
 256 compat_30_netbsd32___fhstat30(struct lwp *l, const struct compat_30_netbsd32___fhstat30_args *uap, register_t *retval)
 257 {
 258         /* {
 259                 syscallarg(const netbsd32_fhandlep_t) fhp;
 260                 syscallarg(netbsd32_statp_t) sb;
 261         } */
 262         struct stat sb;
 263         struct netbsd32_stat50 sb32;
 264         int error;
 265
 266         error = do_fhstat(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, &sb);
 267         if (error)
 268                 return error;
 269
 270         netbsd32_from___stat50(&sb, &sb32);
 271         error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
 272         return error;
 273 }
 274
 275 /*
 276  * Open a file given a file handle.
 277  *
 278  * Check permissions, allocate an open file structure,
 279  * and call the device open routine if any.
 280  */
 281 int
 282 compat_30_netbsd32_fhopen(struct lwp *l, const struct compat_30_netbsd32_fhopen_args *uap, register_t *retval)
 283 {
 284         /* {
 285                 syscallarg(const fhandle_t *) fhp;
 286                 syscallarg(int) flags;
 287         } */
 288         struct compat_30_sys_fhopen_args ua;
 289
 290         NETBSD32TOP_UAP(fhp, struct compat_30_fhandle);
 291         NETBSD32TO64_UAP(flags);
 292         return (compat_30_sys_fhopen(l, &ua, retval));
 293 }