netbsd32_compat_30.c revision 1.31.16.2
1 /* $NetBSD: netbsd32_compat_30.c,v 1.31.16.2 2018/09/10 10:49:09 pgoyette 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 1.31.16.2 2018/09/10 10:49:09 pgoyette Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/mount.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_syscallvar.h> 55 #include <compat/netbsd32/netbsd32_syscallargs.h> 56 #include <compat/netbsd32/netbsd32_conv.h> 57 #include <compat/sys/mount.h> 58 59 60 int 61 compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval) 62 { 63 /* { 64 syscallarg(int) fd; 65 syscallarg(netbsd32_charp) buf; 66 syscallarg(netbsd32_size_t) count; 67 } */ 68 file_t *fp; 69 int error, done; 70 char *buf; 71 netbsd32_size_t count; 72 73 /* Limit the size on any kernel buffers used by VOP_READDIR */ 74 count = uimin(MAXBSIZE, SCARG(uap, count)); 75 76 /* fd_getvnode() will use the descriptor for us */ 77 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 78 return (error); 79 if ((fp->f_flag & FREAD) == 0) { 80 error = EBADF; 81 goto out; 82 } 83 if (count == 0) 84 goto out; 85 86 buf = kmem_alloc(count, KM_SLEEP); 87 error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0); 88 if (error == 0) { 89 *retval = netbsd32_to_dirent12(buf, done); 90 error = copyout(buf, SCARG_P32(uap, buf), *retval); 91 } 92 kmem_free(buf, count); 93 out: 94 fd_putfile(SCARG(uap, fd)); 95 return (error); 96 } 97 98 int 99 compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval) 100 { 101 /* { 102 syscallarg(const netbsd32_charp) path; 103 syscallarg(netbsd32_stat13p_t) ub; 104 } */ 105 struct netbsd32_stat13 sb32; 106 struct stat sb; 107 int error; 108 const char *path; 109 110 path = SCARG_P32(uap, path); 111 112 error = do_sys_stat(path, FOLLOW, &sb); 113 if (error) 114 return (error); 115 netbsd32_from___stat13(&sb, &sb32); 116 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 117 return (error); 118 } 119 120 int 121 compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval) 122 { 123 /* { 124 syscallarg(int) fd; 125 syscallarg(netbsd32_stat13p_t) sb; 126 } */ 127 struct netbsd32_stat13 sb32; 128 struct stat ub; 129 int error; 130 131 error = do_sys_fstat(SCARG(uap, fd), &ub); 132 if (error == 0) { 133 netbsd32_from___stat13(&ub, &sb32); 134 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 135 } 136 return (error); 137 } 138 139 int 140 compat_30_netbsd32___lstat13(struct lwp *l, const struct compat_30_netbsd32___lstat13_args *uap, register_t *retval) 141 { 142 /* { 143 syscallarg(const netbsd32_charp) path; 144 syscallarg(netbsd32_stat13p_t) ub; 145 } */ 146 struct netbsd32_stat13 sb32; 147 struct stat sb; 148 int error; 149 const char *path; 150 151 path = SCARG_P32(uap, path); 152 153 error = do_sys_stat(path, NOFOLLOW, &sb); 154 if (error) 155 return (error); 156 netbsd32_from___stat13(&sb, &sb32); 157 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 158 return (error); 159 } 160 161 int 162 compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval) 163 { 164 /* { 165 syscallarg(const netbsd32_fhandlep_t) fhp; 166 syscallarg(netbsd32_stat13p_t) sb; 167 } */ 168 struct stat sb; 169 struct netbsd32_stat13 sb32; 170 int error; 171 struct compat_30_fhandle fh; 172 struct mount *mp; 173 struct vnode *vp; 174 175 /* 176 * Must be super user 177 */ 178 if ((error = kauth_authorize_system(l->l_cred, 179 KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL))) 180 return (error); 181 182 if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0) 183 return (error); 184 185 if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) 186 return (ESTALE); 187 if (mp->mnt_op->vfs_fhtovp == NULL) 188 return EOPNOTSUPP; 189 if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp))) 190 return (error); 191 error = vn_stat(vp, &sb); 192 vput(vp); 193 if (error) 194 return (error); 195 netbsd32_from___stat13(&sb, &sb32); 196 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb)); 197 return (error); 198 } 199 200 int 201 compat_30_netbsd32_fhstatvfs1(struct lwp *l, const struct compat_30_netbsd32_fhstatvfs1_args *uap, register_t *retval) 202 { 203 /* { 204 syscallarg(const netbsd32_fhandlep_t) fhp; 205 syscallarg(netbsd32_statvfsp_t) buf; 206 syscallarg(int) flags; 207 } */ 208 struct statvfs *sbuf; 209 struct netbsd32_statvfs *s32; 210 int error; 211 212 sbuf = STATVFSBUF_GET(); 213 error = do_fhstatvfs(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, sbuf, 214 SCARG(uap, flags)); 215 216 if (error != 0) { 217 s32 = kmem_alloc(sizeof(*s32), KM_SLEEP); 218 netbsd32_from_statvfs(sbuf, s32); 219 error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32); 220 kmem_free(s32, sizeof(*s32)); 221 } 222 STATVFSBUF_PUT(sbuf); 223 224 return (error); 225 } 226 227 int 228 compat_30_netbsd32_socket(struct lwp *l, const struct compat_30_netbsd32_socket_args *uap, register_t *retval) 229 { 230 /* { 231 syscallarg(int) domain; 232 syscallarg(int) type; 233 syscallarg(int) protocol; 234 } */ 235 struct compat_30_sys_socket_args ua; 236 237 NETBSD32TO64_UAP(domain); 238 NETBSD32TO64_UAP(type); 239 NETBSD32TO64_UAP(protocol); 240 return (compat_30_sys_socket(l, &ua, retval)); 241 } 242 243 int 244 compat_30_netbsd32_getfh(struct lwp *l, const struct compat_30_netbsd32_getfh_args *uap, register_t *retval) 245 { 246 /* { 247 syscallarg(const netbsd32_charp) fname; 248 syscallarg(netbsd32_compat_30_fhandlep_t) fhp; 249 } */ 250 struct compat_30_sys_getfh_args ua; 251 252 NETBSD32TOP_UAP(fname, const char); 253 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 254 /* Lucky for us a fhandle_t doesn't change sizes */ 255 return (compat_30_sys_getfh(l, &ua, retval)); 256 } 257 258 259 int 260 compat_30_netbsd32___fhstat30(struct lwp *l, const struct compat_30_netbsd32___fhstat30_args *uap, register_t *retval) 261 { 262 /* { 263 syscallarg(const netbsd32_fhandlep_t) fhp; 264 syscallarg(netbsd32_statp_t) sb; 265 } */ 266 struct stat sb; 267 struct netbsd32_stat50 sb32; 268 int error; 269 270 error = do_fhstat(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, &sb); 271 if (error) 272 return error; 273 274 netbsd32_from___stat50(&sb, &sb32); 275 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 276 return error; 277 } 278 279 /* 280 * Open a file given a file handle. 281 * 282 * Check permissions, allocate an open file structure, 283 * and call the device open routine if any. 284 */ 285 int 286 compat_30_netbsd32_fhopen(struct lwp *l, const struct compat_30_netbsd32_fhopen_args *uap, register_t *retval) 287 { 288 /* { 289 syscallarg(const fhandle_t *) fhp; 290 syscallarg(int) flags; 291 } */ 292 struct compat_30_sys_fhopen_args ua; 293 294 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 295 NETBSD32TO64_UAP(flags); 296 return (compat_30_sys_fhopen(l, &ua, retval)); 297 } 298 299 static struct syscall_package compat_netbsd32_30_syscalls[] = { 300 { NETBSD32_SYS_getdents, 0, 301 (sy_call_t *)compat_30_netbsd32_getdents }, 302 { NETBSD32_SYS_stat13, 0, 303 (sy_call_t *)compat_30_netbsd32___stat13 }, 304 { NETBSD32_SYS_fstat13, 0, 305 (sy_call_t *)compat_30_netbsd32___fstat13 }, 306 { NETBSD32_SYS_lstat13, 0, 307 (sy_call_t *)compat_30_netbsd32___lstat13 }, 308 { NETBSD32_SYS_fhstat, 0, 309 (sy_call_t *)compat_30_netbsd32_fhstat }, 310 { NETBSD32_SYS_fhstatvfs1, 0, 311 (sy_call_t *)compat_30_netbsd32_fhstatvfs1 }, 312 { NETBSD32_SYS_socket, 0, 313 (sy_call_t *)compat_30_netbsd32_socket }, 314 { NETBSD32_SYS_getfh, 0, 315 (sy_call_t *)compat_30_netbsd32_getfh }, 316 { NETBSD32_SYS_fhstat30, 0, 317 (sy_call_t *)compat_30_netbsd32___fhstat30 }, 318 { NETBSD32_SYS_fhopen, 0, 319 (sy_call_t *)compat_30_netbsd32___fhopen }, 320 { 0, 0, NULL } 321 }; 322 323 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_30, "compat_netbsd32,compat_30"); 324 325 static int 326 compat_netbsd32_30_modcmd(modcmd_t cmd, void *arg) 327 { 328 329 switch (cmd) { 330 case MODULE_CMD_INIT: 331 return syscall_establish(NULL, compat_netbsd32_30_syscalls); 332 333 case MODULE_CMD_FINI: 334 return syscall_disestablish(NULL, compat_netbsd32_30_syscalls); 335 336 default: 337 return ENOTTY; 338 } 339 } 340
Indexes created Thu Oct 02 14:10:14 GMT 2025