| 1 | /* $NetBSD: netbsd32_compat_30.c,v 1.31 2014/12/05 17:26:21 maxv 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 1.31 2014/12/05 17:26:21 maxv Exp $" ); |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/systm.h> |
| 34 | #include <sys/mount.h> |
| 35 | #include <sys/socket.h> |
| 36 | #include <sys/socketvar.h> |
| 37 | #include <sys/stat.h> |
| 38 | #include <sys/time.h> |
| 39 | #include <sys/ktrace.h> |
| 40 | #include <sys/resourcevar.h> |
| 41 | #include <sys/vnode.h> |
| 42 | #include <sys/file.h> |
| 43 | #include <sys/filedesc.h> |
| 44 | #include <sys/namei.h> |
| 45 | #include <sys/statvfs.h> |
| 46 | #include <sys/syscallargs.h> |
| 47 | #include <sys/proc.h> |
| 48 | #include <sys/dirent.h> |
| 49 | #include <sys/kauth.h> |
| 50 | #include <sys/vfs_syscalls.h> |
| 51 | |
| 52 | #include <compat/netbsd32/netbsd32.h> |
| 53 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
| 54 | #include <compat/netbsd32/netbsd32_conv.h> |
| 55 | #include <compat/sys/mount.h> |
| 56 | |
| 57 | |
| 58 | int |
| 59 | compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval) |
| 60 | { |
| 61 | /* { |
| 62 | syscallarg(int) fd; |
| 63 | syscallarg(netbsd32_charp) buf; |
| 64 | syscallarg(netbsd32_size_t) count; |
| 65 | } */ |
| 66 | file_t *fp; |
| 67 | int error, done; |
| 68 | char *buf; |
| 69 | netbsd32_size_t count; |
| 70 | |
| 71 | /* Limit the size on any kernel buffers used by VOP_READDIR */ |
| 72 | count = min(MAXBSIZE, SCARG(uap, count)); |
| 73 | |
| 74 | /* fd_getvnode() will use the descriptor for us */ |
| 75 | if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) |
| 76 | return (error); |
| 77 | if ((fp->f_flag & FREAD) == 0) { |
| 78 | error = EBADF; |
| 79 | goto out; |
| 80 | } |
| 81 | if (count == 0) |
| 82 | goto out; |
| 83 | |
| 84 | buf = kmem_alloc(count, KM_SLEEP); |
| 85 | error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0); |
| 86 | if (error == 0) { |
| 87 | *retval = netbsd32_to_dirent12(buf, done); |
| 88 | error = copyout(buf, SCARG_P32(uap, buf), *retval); |
| 89 | } |
| 90 | kmem_free(buf, count); |
| 91 | out: |
| 92 | fd_putfile(SCARG(uap, fd)); |
| 93 | return (error); |
| 94 | } |
| 95 | |
| 96 | int |
| 97 | compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval) |
| 98 | { |
| 99 | /* { |
| 100 | syscallarg(const netbsd32_charp) path; |
| 101 | syscallarg(netbsd32_stat13p_t) ub; |
| 102 | } */ |
| 103 | struct netbsd32_stat13 sb32; |
| 104 | struct stat sb; |
| 105 | int error; |
| 106 | const char *path; |
| 107 | |
| 108 | path = SCARG_P32(uap, path); |
| 109 | |
| 110 | error = do_sys_stat(path, FOLLOW, &sb); |
| 111 | if (error) |
| 112 | return (error); |
| 113 | netbsd32_from___stat13(&sb, &sb32); |
| 114 | error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); |
| 115 | return (error); |
| 116 | } |
| 117 | |
| 118 | int |
| 119 | compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval) |
| 120 | { |
| 121 | /* { |
| 122 | syscallarg(int) fd; |
| 123 | syscallarg(netbsd32_stat13p_t) sb; |
| 124 | } */ |
| 125 | struct netbsd32_stat13 sb32; |
| 126 | struct stat ub; |
| 127 | int error; |
| 128 | |
| 129 | error = do_sys_fstat(SCARG(uap, fd), &ub); |
| 130 | if (error == 0) { |
| 131 | netbsd32_from___stat13(&ub, &sb32); |
| 132 | error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); |
| 133 | } |
| 134 | return (error); |
| 135 | } |
| 136 | |
| 137 | int |
| 138 | compat_30_netbsd32___lstat13(struct lwp *l, const struct compat_30_netbsd32___lstat13_args *uap, register_t *retval) |
| 139 | { |
| 140 | /* { |
| 141 | syscallarg(const netbsd32_charp) path; |
| 142 | syscallarg(netbsd32_stat13p_t) ub; |
| 143 | } */ |
| 144 | struct netbsd32_stat13 sb32; |
| 145 | struct stat sb; |
| 146 | int error; |
| 147 | const char *path; |
| 148 | |
| 149 | path = SCARG_P32(uap, path); |
| 150 | |
| 151 | error = do_sys_stat(path, NOFOLLOW, &sb); |
| 152 | if (error) |
| 153 | return (error); |
| 154 | netbsd32_from___stat13(&sb, &sb32); |
| 155 | error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); |
| 156 | return (error); |
| 157 | } |
| 158 | |
| 159 | int |
| 160 | compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval) |
| 161 | { |
| 162 | /* { |
| 163 | syscallarg(const netbsd32_fhandlep_t) fhp; |
| 164 | syscallarg(netbsd32_stat13p_t) sb; |
| 165 | } */ |
| 166 | struct stat sb; |
| 167 | struct netbsd32_stat13 sb32; |
| 168 | int error; |
| 169 | struct compat_30_fhandle fh; |
| 170 | struct mount *mp; |
| 171 | struct vnode *vp; |
| 172 | |
| 173 | /* |
| 174 | * Must be super user |
| 175 | */ |
| 176 | if ((error = kauth_authorize_system(l->l_cred, |
| 177 | KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL))) |
| 178 | return (error); |
| 179 | |
| 180 | if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0) |
| 181 | return (error); |
| 182 | |
| 183 | if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) |
| 184 | return (ESTALE); |
| 185 | if (mp->mnt_op->vfs_fhtovp == NULL) |
| 186 | return EOPNOTSUPP; |
| 187 | if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp))) |
| 188 | return (error); |
| 189 | error = vn_stat(vp, &sb); |
| 190 | vput(vp); |
| 191 | if (error) |
| 192 | return (error); |
| 193 | netbsd32_from___stat13(&sb, &sb32); |
| 194 | error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb)); |
| 195 | return (error); |
| 196 | } |
| 197 | |
| 198 | int |
| 199 | compat_30_netbsd32_fhstatvfs1(struct lwp *l, const struct compat_30_netbsd32_fhstatvfs1_args *uap, register_t *retval) |
| 200 | { |
| 201 | /* { |
| 202 | syscallarg(const netbsd32_fhandlep_t) fhp; |
| 203 | syscallarg(netbsd32_statvfsp_t) buf; |
| 204 | syscallarg(int) flags; |
| 205 | } */ |
| 206 | struct statvfs *sbuf; |
| 207 | struct netbsd32_statvfs *s32; |
| 208 | int error; |
| 209 | |
| 210 | sbuf = STATVFSBUF_GET(); |
| 211 | error = do_fhstatvfs(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, sbuf, |
| 212 | SCARG(uap, flags)); |
| 213 | |
| 214 | if (error != 0) { |
| 215 | s32 = kmem_alloc(sizeof(*s32), KM_SLEEP); |
| 216 | netbsd32_from_statvfs(sbuf, s32); |
| 217 | error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32); |
| 218 | kmem_free(s32, sizeof(*s32)); |
| 219 | } |
| 220 | STATVFSBUF_PUT(sbuf); |
| 221 | |
| 222 | return (error); |
| 223 | } |
| 224 | |
| 225 | int |
| 226 | compat_30_netbsd32_socket(struct lwp *l, const struct compat_30_netbsd32_socket_args *uap, register_t *retval) |
| 227 | { |
| 228 | /* { |
| 229 | syscallarg(int) domain; |
| 230 | syscallarg(int) type; |
| 231 | syscallarg(int) protocol; |
| 232 | } */ |
| 233 | struct compat_30_sys_socket_args ua; |
| 234 | |
| 235 | NETBSD32TO64_UAP(domain); |
| 236 | NETBSD32TO64_UAP(type); |
| 237 | NETBSD32TO64_UAP(protocol); |
| 238 | return (compat_30_sys_socket(l, &ua, retval)); |
| 239 | } |
| 240 | |
| 241 | int |
| 242 | compat_30_netbsd32_getfh(struct lwp *l, const struct compat_30_netbsd32_getfh_args *uap, register_t *retval) |
| 243 | { |
| 244 | /* { |
| 245 | syscallarg(const netbsd32_charp) fname; |
| 246 | syscallarg(netbsd32_compat_30_fhandlep_t) fhp; |
| 247 | } */ |
| 248 | struct compat_30_sys_getfh_args ua; |
| 249 | |
| 250 | NETBSD32TOP_UAP(fname, const char); |
| 251 | NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); |
| 252 | /* Lucky for us a fhandle_t doesn't change sizes */ |
| 253 | return (compat_30_sys_getfh(l, &ua, retval)); |
| 254 | } |
| 255 | |
| 256 | |
| 257 | int |
| 258 | compat_30_netbsd32___fhstat30(struct lwp *l, const struct compat_30_netbsd32___fhstat30_args *uap, register_t *retval) |
| 259 | { |
| 260 | /* { |
| 261 | syscallarg(const netbsd32_fhandlep_t) fhp; |
| 262 | syscallarg(netbsd32_statp_t) sb; |
| 263 | } */ |
| 264 | struct stat sb; |
| 265 | struct netbsd32_stat50 sb32; |
| 266 | int error; |
| 267 | |
| 268 | error = do_fhstat(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, &sb); |
| 269 | if (error) |
| 270 | return error; |
| 271 | |
| 272 | netbsd32_from___stat50(&sb, &sb32); |
| 273 | error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); |
| 274 | return error; |
| 275 | } |
| 276 | |
| 277 | /* |
| 278 | * Open a file given a file handle. |
| 279 | * |
| 280 | * Check permissions, allocate an open file structure, |
| 281 | * and call the device open routine if any. |
| 282 | */ |
| 283 | int |
| 284 | compat_30_netbsd32_fhopen(struct lwp *l, const struct compat_30_netbsd32_fhopen_args *uap, register_t *retval) |
| 285 | { |
| 286 | /* { |
| 287 | syscallarg(const fhandle_t *) fhp; |
| 288 | syscallarg(int) flags; |
| 289 | } */ |
| 290 | struct compat_30_sys_fhopen_args ua; |
| 291 | |
| 292 | NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); |
| 293 | NETBSD32TO64_UAP(flags); |
| 294 | return (compat_30_sys_fhopen(l, &ua, retval)); |
| 295 | } |
| 296 | |