ultrix_fs.c revision 1.9 1 1.9 jonathan /* $NetBSD: ultrix_fs.c,v 1.9 1997/04/06 23:26:52 jonathan Exp $ */
2 1.1 jonathan
3 1.1 jonathan /*
4 1.1 jonathan * Copyright (c) 1995
5 1.1 jonathan * Jonathan Stone (hereinafter referred to as the author)
6 1.1 jonathan *
7 1.1 jonathan * Redistribution and use in source and binary forms, with or without
8 1.1 jonathan * modification, are permitted provided that the following conditions
9 1.1 jonathan * are met:
10 1.1 jonathan * 1. Redistributions of source code must retain the above copyright
11 1.1 jonathan * notice, this list of conditions and the following disclaimer.
12 1.1 jonathan * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 jonathan * notice, this list of conditions and the following disclaimer in the
14 1.1 jonathan * documentation and/or other materials provided with the distribution.
15 1.7 jonathan * 3. All advertising materials mentioning features or use of this software
16 1.7 jonathan * must display the following acknowledgement:
17 1.8 jonathan * This product includes software developed by Jonathan Stone for
18 1.7 jonathan * the NetBSD Project.
19 1.7 jonathan * 4. The name of the author may not be used to endorse or promote products
20 1.1 jonathan * derived from this software without specific prior written permission.
21 1.1 jonathan *
22 1.1 jonathan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
23 1.1 jonathan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 1.1 jonathan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 1.1 jonathan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
26 1.1 jonathan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 1.1 jonathan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 1.1 jonathan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 1.1 jonathan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 1.1 jonathan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 1.1 jonathan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 1.1 jonathan * SUCH DAMAGE.
33 1.1 jonathan */
34 1.1 jonathan
35 1.1 jonathan #include <sys/param.h>
36 1.1 jonathan #include <sys/systm.h>
37 1.1 jonathan #include <sys/malloc.h>
38 1.2 jonathan #include <sys/exec.h>
39 1.2 jonathan #include <sys/namei.h>
40 1.1 jonathan #include <sys/mount.h>
41 1.9 jonathan #include <sys/proc.h>
42 1.2 jonathan #include <net/if.h>
43 1.2 jonathan #include <netinet/in.h>
44 1.1 jonathan
45 1.3 pk #include <nfs/rpcv2.h>
46 1.3 pk #include <nfs/nfsproto.h>
47 1.3 pk #include <nfs/nfs.h>
48 1.2 jonathan
49 1.2 jonathan #include <sys/syscallargs.h>
50 1.1 jonathan #include <compat/ultrix/ultrix_syscallargs.h>
51 1.9 jonathan #include <compat/common/compat_util.h>
52 1.1 jonathan
53 1.2 jonathan #include <vm/vm.h>
54 1.2 jonathan
55 1.1 jonathan #define ULTRIX_MAXPATHLEN 1024
56 1.1 jonathan
57 1.1 jonathan /**
58 1.1 jonathan ** Ultrix filesystem operations: mount(), getmnt().
59 1.1 jonathan ** These are included purely so one can place an (ECOFF or ELF)
60 1.1 jonathan ** NetBSD/pmax kernel in an Ultrix root filesystem, boot it,
61 1.1 jonathan ** and over-write the Ultrix root parition with NetBSD binaries.
62 1.1 jonathan **/
63 1.1 jonathan
64 1.1 jonathan /*
65 1.1 jonathan * Ultrix file system data structure, as modified by
66 1.1 jonathan * Ultrix getmntent(). This structure is padded to 2560 bytes, for
67 1.1 jonathan * compatiblity with the size the Ultrix kernel and user apps expect.
68 1.1 jonathan */
69 1.1 jonathan struct ultrix_fs_data {
70 1.1 jonathan u_int32_t ufsd_flags; /* how mounted */
71 1.1 jonathan u_int32_t ufsd_mtsize; /* max transfer size in bytes */
72 1.1 jonathan u_int32_t ufsd_otsize; /* optimal transfer size in bytes */
73 1.1 jonathan u_int32_t ufsd_bsize; /* fs block size (bytes) for vm code */
74 1.1 jonathan u_int32_t ufsd_fstype; /* see ../h/fs_types.h */
75 1.1 jonathan u_int32_t ufsd_gtot; /* total number of gnodes */
76 1.1 jonathan u_int32_t ufsd_gfree; /* # of free gnodes */
77 1.1 jonathan u_int32_t ufsd_btot; /* total number of 1K blocks */
78 1.1 jonathan u_int32_t ufsd_bfree; /* # of free 1K blocks */
79 1.1 jonathan u_int32_t ufsd_bfreen; /* user consumable 1K blocks */
80 1.1 jonathan u_int32_t ufsd_pgthresh; /* min size in bytes before paging*/
81 1.1 jonathan int32_t ufsd_uid; /* uid that mounted me */
82 1.1 jonathan int16_t ufsd_dev; /* major/minor of fs */
83 1.1 jonathan int16_t ufsd_exroot; /* root mapping from exports */
84 1.1 jonathan char ufsd_devname[ULTRIX_MAXPATHLEN + 4]; /* name of dev */
85 1.1 jonathan char ufsd_path[ULTRIX_MAXPATHLEN + 4]; /* name of mnt point */
86 1.1 jonathan u_int32_t ufsd_nupdate; /* number of writes */
87 1.1 jonathan u_int32_t ufsd_pad[112]; /* pad to 2560 bytes. */
88 1.1 jonathan };
89 1.1 jonathan
90 1.1 jonathan /*
91 1.1 jonathan * Get statistics on mounted filesystems.
92 1.1 jonathan */
93 1.1 jonathan #if 0
94 1.1 jonathan struct ultrix_getmnt_args {
95 1.1 jonathan int32_t *start;
96 1.1 jonathan struct ultrix_fs_data *buf;
97 1.1 jonathan int32_t bufsize;
98 1.1 jonathan int32_t mode;
99 1.1 jonathan char *path;
100 1.1 jonathan };
101 1.1 jonathan
102 1.1 jonathan #endif
103 1.1 jonathan /*
104 1.1 jonathan * Ultrix getmnt() flags.
105 1.1 jonathan * The operation getmnt() should perform is incoded in the flag
106 1.1 jonathan * argument. There are two independent attributes.
107 1.1 jonathan *
108 1.1 jonathan * ULTRIX_NOSTAT_xxx will never hang, but it may not return
109 1.1 jonathan * up-to-date statistics. (For NFS clients, it returns whatever is
110 1.1 jonathan * in the cache.) ULTRIX_STAT_xxx returns up-to-date info but may
111 1.1 jonathan * hang (e.g., on dead NFS servers).
112 1.1 jonathan *
113 1.1 jonathan * ULTRIX_xxSTAT_ONE returns statistics on just one filesystem, determined
114 1.1 jonathan * by the parth argument. ULTRIX_xxSTAT_MANY ignores the path argument and
115 1.1 jonathan * returns info on as many filesystems fit in the structure.
116 1.1 jonathan * the start argument, which should be zero on the first call,
117 1.1 jonathan * can be used to iterate over all filesystems.
118 1.1 jonathan *
119 1.1 jonathan */
120 1.1 jonathan #define ULTRIX_NOSTAT_MANY 1
121 1.1 jonathan #define ULTRIX_STAT_MANY 2
122 1.1 jonathan #define ULTRIX_STAT_ONE 3
123 1.1 jonathan #define ULTRIX_NOSTAT_ONE 4
124 1.1 jonathan
125 1.1 jonathan /*
126 1.1 jonathan * Ultrix gnode-layer filesystem codes.
127 1.1 jonathan */
128 1.1 jonathan #define ULTRIX_FSTYPE_UNKNOWN 0x0
129 1.2 jonathan #define ULTRIX_FSTYPE_ULTRIX 0x1 /* Ultrix UFS: basically 4.2bsd FFS */
130 1.1 jonathan #define ULTRIX_FSTYPE_NFS 0x5 /* NFS v2 */
131 1.1 jonathan
132 1.1 jonathan /*
133 1.2 jonathan * Ultrix mount(2) options
134 1.2 jonathan */
135 1.2 jonathan #define ULTRIX_NM_RONLY 0x0001 /* mount read-only */
136 1.2 jonathan #define ULTRIX_NM_SOFT 0x0002 /* soft mount (hard is default) */
137 1.2 jonathan #define ULTRIX_NM_WSIZE 0x0004 /* set write size */
138 1.2 jonathan #define ULTRIX_NM_RSIZE 0x0008 /* set read size */
139 1.2 jonathan #define ULTRIX_NM_TIMEO 0x0010 /* set initial timeout */
140 1.2 jonathan #define ULTRIX_NM_RETRANS 0x0020 /* set number of request retrys */
141 1.2 jonathan #define ULTRIX_NM_HOSTNAME 0x0040 /* set hostname for error printf */
142 1.2 jonathan #define ULTRIX_NM_PGTHRESH 0x0080 /* set page threshold for exec */
143 1.2 jonathan #define ULTRIX_NM_INT 0x0100 /* allow hard mount keyboard interrupts */
144 1.2 jonathan #define ULTRIX_NM_NOAC 0x0200 /* don't cache attributes */
145 1.2 jonathan
146 1.2 jonathan
147 1.2 jonathan /*
148 1.1 jonathan * Construct an Ultrix getmnt() ultrix_fs_data from the native NetBSD
149 1.1 jonathan * struct statfs.
150 1.1 jonathan */
151 1.1 jonathan static void
152 1.1 jonathan make_ultrix_mntent(sp, tem)
153 1.1 jonathan register struct statfs *sp;
154 1.1 jonathan register struct ultrix_fs_data *tem;
155 1.1 jonathan {
156 1.1 jonathan
157 1.2 jonathan bzero(tem, sizeof (*tem));
158 1.2 jonathan
159 1.2 jonathan tem->ufsd_flags = sp->f_flags; /* XXX translate */
160 1.1 jonathan tem->ufsd_mtsize = sp->f_bsize; /* XXX max transfer size */
161 1.1 jonathan tem->ufsd_otsize = sp->f_iosize;
162 1.1 jonathan tem->ufsd_bsize = sp->f_bsize;
163 1.1 jonathan /*
164 1.2 jonathan * Translate file system type. NetBSD/1.1 has f_type zero,
165 1.2 jonathan * and uses an fstype string instead.
166 1.2 jonathan * For now, map types not in Ultrix (kernfs, null, procfs...)
167 1.2 jonathan * to UFS, since Ultrix mout will try and call mount_unknown
168 1.2 jonathan * for ULTRIX_FSTYPE_UNKNOWN, but lacks a mount_unknown binary.
169 1.1 jonathan */
170 1.2 jonathan tem->ufsd_fstype = ULTRIX_FSTYPE_NFS;
171 1.2 jonathan if (strcmp(sp->f_fstypename, "ffs") == 0)
172 1.2 jonathan tem->ufsd_fstype = ULTRIX_FSTYPE_ULTRIX;
173 1.2 jonathan
174 1.2 jonathan tem->ufsd_gtot = sp->f_files; /* total "gnodes" */
175 1.4 jonathan tem->ufsd_gfree = sp->f_ffree; /* free "gnodes" */
176 1.2 jonathan tem->ufsd_btot = sp->f_blocks; /* total 1k blocks */
177 1.4 jonathan #ifdef needsmorethought /* XXX */
178 1.4 jonathan /* tem->ufsd_bfree = sp->f_bfree; */ /* free 1k blocks */
179 1.4 jonathan /* tem->ufsd_bfree = sp->f_bavail; */ /* free 1k blocks */
180 1.4 jonathan #endif
181 1.4 jonathan
182 1.2 jonathan tem->ufsd_bfreen = sp->f_bavail; /* blocks available to users */
183 1.1 jonathan tem->ufsd_pgthresh = 0; /* not relevant */
184 1.1 jonathan tem->ufsd_uid = 0; /* XXX kept where ?*/
185 1.1 jonathan tem->ufsd_dev = 0; /* ?? */
186 1.1 jonathan tem->ufsd_exroot = 0; /* ?? */
187 1.1 jonathan strncpy(tem->ufsd_path, sp->f_mntonname, ULTRIX_MAXPATHLEN);
188 1.1 jonathan strncpy(tem->ufsd_devname, sp->f_mntfromname, ULTRIX_MAXPATHLEN);
189 1.2 jonathan #if 0
190 1.2 jonathan /* In NetBSD-1.1, filesystem type is unused and always 0 */
191 1.6 christos printf("mntent: %s type %d\n", tem->ufsd_devname, tem->ufsd_fstype);
192 1.6 christos printf("mntent: %s tot %d free %d user%d\n",
193 1.2 jonathan tem->ufsd_devname, sp->f_blocks, sp->f_bfree, sp->f_bavail);
194 1.2 jonathan #endif
195 1.1 jonathan }
196 1.1 jonathan
197 1.1 jonathan int
198 1.1 jonathan ultrix_sys_getmnt(p, v, retval)
199 1.1 jonathan struct proc *p;
200 1.1 jonathan void *v;
201 1.1 jonathan int *retval;
202 1.1 jonathan {
203 1.1 jonathan struct ultrix_sys_getmnt_args *uap = v;
204 1.1 jonathan struct mount *mp, *nmp;
205 1.1 jonathan struct statfs *sp;
206 1.1 jonathan struct ultrix_fs_data *sfsp;
207 1.1 jonathan char *path;
208 1.1 jonathan int mntflags;
209 1.1 jonathan int skip;
210 1.1 jonathan int start;
211 1.1 jonathan long count, maxcount;
212 1.1 jonathan int error = 0;
213 1.1 jonathan
214 1.1 jonathan path = NULL;
215 1.1 jonathan error = 0;
216 1.1 jonathan maxcount = SCARG(uap, bufsize) / sizeof(struct ultrix_fs_data);
217 1.1 jonathan sfsp = SCARG(uap, buf);
218 1.1 jonathan
219 1.1 jonathan if (SCARG(uap, mode) == ULTRIX_STAT_ONE ||
220 1.1 jonathan SCARG(uap, mode) == ULTRIX_STAT_MANY)
221 1.1 jonathan mntflags = MNT_WAIT;
222 1.1 jonathan else
223 1.1 jonathan mntflags = MNT_NOWAIT;
224 1.1 jonathan
225 1.1 jonathan if (SCARG(uap, mode) == ULTRIX_STAT_ONE || SCARG(uap, mode) == ULTRIX_NOSTAT_ONE) {
226 1.1 jonathan /*
227 1.1 jonathan * Only get info on mountpoints that matches the path
228 1.1 jonathan * provided.
229 1.1 jonathan */
230 1.1 jonathan MALLOC(path, char *, MAXPATHLEN, M_TEMP, M_WAITOK);
231 1.4 jonathan if ((error = copyinstr(SCARG(uap, path), path,
232 1.4 jonathan MAXPATHLEN, NULL)) != 0)
233 1.1 jonathan goto bad;
234 1.1 jonathan maxcount = 1;
235 1.1 jonathan } else {
236 1.1 jonathan /*
237 1.1 jonathan * Get info on any mountpoints, somewhat like readdir().
238 1.1 jonathan * Find out how many mount list entries to skip, and skip
239 1.1 jonathan * them.
240 1.1 jonathan */
241 1.4 jonathan if ((error = copyin((caddr_t)SCARG(uap, start), &start,
242 1.4 jonathan sizeof(*SCARG(uap, start)))) != 0)
243 1.1 jonathan goto bad;
244 1.1 jonathan for (skip = start, mp = mountlist.cqh_first;
245 1.1 jonathan mp != (void*)&mountlist && skip-- > 0; mp = nmp)
246 1.1 jonathan nmp = mp->mnt_list.cqe_next;
247 1.1 jonathan }
248 1.1 jonathan
249 1.1 jonathan for (count = 0, mp = mountlist.cqh_first;
250 1.1 jonathan mp != (void*)&mountlist && count < maxcount; mp = nmp) {
251 1.1 jonathan nmp = mp->mnt_list.cqe_next;
252 1.1 jonathan if (sfsp != NULL && (mp->mnt_flag & MNT_MLOCK) == 0) {
253 1.1 jonathan struct ultrix_fs_data tem;
254 1.1 jonathan sp = &mp->mnt_stat;
255 1.1 jonathan
256 1.1 jonathan /*
257 1.1 jonathan * If requested, refresh the fsstat cache.
258 1.1 jonathan */
259 1.1 jonathan if ((mntflags & MNT_WAIT) != 0 &&
260 1.1 jonathan (error = VFS_STATFS(mp, sp, p)) != 0)
261 1.1 jonathan continue;
262 1.1 jonathan
263 1.1 jonathan /*
264 1.1 jonathan * XXX what does this do? -- cgd
265 1.1 jonathan */
266 1.1 jonathan sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
267 1.1 jonathan if (path == NULL ||
268 1.1 jonathan strcmp(path, sp->f_mntonname) == 0) {
269 1.1 jonathan make_ultrix_mntent(sp, &tem);
270 1.4 jonathan if ((error = copyout((caddr_t)&tem, sfsp,
271 1.4 jonathan sizeof(tem))) != 0)
272 1.1 jonathan goto bad;
273 1.1 jonathan sfsp++;
274 1.1 jonathan count++;
275 1.1 jonathan }
276 1.1 jonathan }
277 1.1 jonathan }
278 1.1 jonathan
279 1.1 jonathan if (sfsp != NULL && count > maxcount)
280 1.1 jonathan *retval = maxcount;
281 1.1 jonathan else
282 1.1 jonathan *retval = count;
283 1.1 jonathan
284 1.1 jonathan bad:
285 1.1 jonathan if (path)
286 1.1 jonathan FREE(path, M_TEMP);
287 1.1 jonathan return (error);
288 1.2 jonathan }
289 1.2 jonathan
290 1.2 jonathan
291 1.2 jonathan
292 1.2 jonathan /* Old-style inet sockaddr (no len field) as passed to Ultrix mount(2) */
293 1.2 jonathan struct osockaddr_in {
294 1.2 jonathan short sin_family;
295 1.2 jonathan u_short sin_port;
296 1.2 jonathan struct in_addr sin_addr;
297 1.2 jonathan char sin_zero[8];
298 1.2 jonathan };
299 1.2 jonathan
300 1.2 jonathan
301 1.2 jonathan /*
302 1.2 jonathan * fstype-dependent structure passed to Ultrix mount(2) when
303 1.2 jonathan * mounting NFS filesystems
304 1.2 jonathan */
305 1.2 jonathan struct ultrix_nfs_args {
306 1.2 jonathan struct osockaddr_in *addr; /* file server address */
307 1.3 pk void *fh; /* file handle to be mounted */
308 1.2 jonathan int flags; /* flags */
309 1.2 jonathan int wsize; /* write size in bytes */
310 1.2 jonathan int rsize; /* read size in bytes */
311 1.2 jonathan int timeo; /* initial timeout in .1 secs */
312 1.2 jonathan int retrans; /* times to retry send */
313 1.2 jonathan char *hostname; /* server's hostname */
314 1.2 jonathan char *optstr; /* string of nfs mount options*/
315 1.2 jonathan int gfs_flags; /* gnode flags (ugh) */
316 1.2 jonathan int pg_thresh; /* paging threshold ? */
317 1.2 jonathan };
318 1.2 jonathan
319 1.2 jonathan
320 1.2 jonathan /*
321 1.2 jonathan * fstype-dependent structure passed to Ultrix mount(2) when
322 1.2 jonathan * mounting local (4.2bsd FFS) filesystems
323 1.2 jonathan */
324 1.2 jonathan struct ultrix_ufs_args {
325 1.2 jonathan u_long ufs_flags; /* mount flags?*/
326 1.2 jonathan u_long ufs_pgthresh; /* minimum file size to page */
327 1.2 jonathan };
328 1.2 jonathan
329 1.2 jonathan int
330 1.2 jonathan ultrix_sys_mount(p, v, retval)
331 1.2 jonathan struct proc *p;
332 1.2 jonathan void *v;
333 1.2 jonathan int *retval;
334 1.2 jonathan {
335 1.2 jonathan struct ultrix_sys_mount_args *uap = v;
336 1.2 jonathan
337 1.2 jonathan int error;
338 1.2 jonathan int otype = SCARG(uap, type);
339 1.2 jonathan extern char sigcode[], esigcode[];
340 1.2 jonathan char fsname[MFSNAMELEN];
341 1.2 jonathan char * fstype;
342 1.2 jonathan struct sys_mount_args nuap;
343 1.8 jonathan char *native_fstype;
344 1.2 jonathan
345 1.9 jonathan caddr_t usp = stackgap_init(p->p_emul);
346 1.2 jonathan
347 1.2 jonathan bzero(&nuap, sizeof(nuap));
348 1.2 jonathan SCARG(&nuap, flags) = 0;
349 1.2 jonathan
350 1.2 jonathan /*
351 1.2 jonathan * Translate Ultrix integer mount codes for UFS and NFS to
352 1.2 jonathan * NetBSD fstype strings. Other Ultrix filesystem types
353 1.2 jonathan * (msdos, DEC ods-2) are not supported.
354 1.8 jonathan * Copy resulting string out to userspace (on stack)
355 1.8 jonathan * so we can pass it to the native mount syscall.
356 1.2 jonathan */
357 1.2 jonathan if (otype == ULTRIX_FSTYPE_ULTRIX)
358 1.2 jonathan fstype = "ufs";
359 1.2 jonathan else if (otype == ULTRIX_FSTYPE_NFS)
360 1.2 jonathan fstype = "nfs";
361 1.2 jonathan else
362 1.2 jonathan return (EINVAL);
363 1.2 jonathan
364 1.2 jonathan /* Translate the Ultrix mount-readonly option parameter */
365 1.2 jonathan if (SCARG(uap, rdonly))
366 1.2 jonathan SCARG(&nuap, flags) |= MNT_RDONLY;
367 1.2 jonathan
368 1.2 jonathan /* Copy string-ified version of mount type back out to user space */
369 1.8 jonathan native_fstype = (char *)usp;
370 1.8 jonathan SCARG(&nuap, type) = native_fstype;
371 1.8 jonathan if ((error = copyout(fstype, native_fstype,
372 1.4 jonathan strlen(fstype)+1)) != 0) {
373 1.2 jonathan return (error);
374 1.2 jonathan }
375 1.2 jonathan usp += strlen(fstype)+1;
376 1.2 jonathan
377 1.2 jonathan #ifdef later
378 1.2 jonathan parse ultrix mount option string and set NetBSD flags
379 1.2 jonathan #endif
380 1.2 jonathan SCARG(&nuap, path) = SCARG(uap, dir);
381 1.2 jonathan
382 1.8 jonathan /*
383 1.8 jonathan * Translate fstype-dependent mount options from
384 1.8 jonathan * Ultrix format to native.
385 1.8 jonathan */
386 1.2 jonathan if (otype == ULTRIX_FSTYPE_ULTRIX) {
387 1.2 jonathan /* attempt to mount a native, rather than 4.2bsd, ffs */
388 1.2 jonathan struct ufs_args ua;
389 1.2 jonathan
390 1.2 jonathan ua.fspec = SCARG(uap, special);
391 1.2 jonathan bzero(&ua.export, sizeof(ua.export));
392 1.2 jonathan SCARG(&nuap, data) = usp;
393 1.2 jonathan
394 1.4 jonathan if ((error = copyout(&ua, SCARG(&nuap, data),
395 1.4 jonathan sizeof ua)) !=0) {
396 1.2 jonathan return(error);
397 1.2 jonathan }
398 1.2 jonathan /*
399 1.2 jonathan * Ultrix mount has no MNT_UPDATE flag.
400 1.2 jonathan * Attempt to see if this is the root we're mounting,
401 1.2 jonathan * and if so, set MNT_UPDATE so we can mount / read-write.
402 1.2 jonathan */
403 1.2 jonathan fsname[0] = 0;
404 1.4 jonathan if ((error = copyinstr((caddr_t)SCARG(&nuap, path), fsname,
405 1.4 jonathan sizeof fsname, (u_int*)0)) != 0)
406 1.2 jonathan return(error);
407 1.2 jonathan if (strcmp(fsname, "/") == 0) {
408 1.2 jonathan SCARG(&nuap, flags) |= MNT_UPDATE;
409 1.6 christos printf("COMPAT_ULTRIX: mount with MNT_UPDATE on %s\n",
410 1.5 christos fsname);
411 1.2 jonathan }
412 1.2 jonathan } else if (otype == ULTRIX_FSTYPE_NFS) {
413 1.2 jonathan struct ultrix_nfs_args una;
414 1.2 jonathan struct nfs_args na;
415 1.2 jonathan struct osockaddr_in osa;
416 1.2 jonathan struct sockaddr_in *sap = (struct sockaddr_in *)& osa;
417 1.2 jonathan
418 1.2 jonathan bzero(&osa, sizeof(osa));
419 1.2 jonathan bzero(&una, sizeof(una));
420 1.4 jonathan if ((error = copyin(SCARG(uap, data), &una, sizeof una)) !=0) {
421 1.2 jonathan return (error);
422 1.2 jonathan }
423 1.2 jonathan /*
424 1.2 jonathan * This is the only syscall boundary the
425 1.2 jonathan * address of the server passes, so do backwards
426 1.2 jonathan * compatibility on 4.3style sockaddrs here.
427 1.2 jonathan */
428 1.4 jonathan if ((error = copyin(una.addr, &osa, sizeof osa)) != 0) {
429 1.6 christos printf("ultrix_mount: nfs copyin osa\n");
430 1.2 jonathan return (error);
431 1.2 jonathan }
432 1.2 jonathan sap->sin_family = (u_char)osa.sin_family;
433 1.2 jonathan sap->sin_len = sizeof(*sap);
434 1.2 jonathan /* allocate space above caller's stack for nfs_args */
435 1.2 jonathan SCARG(&nuap, data) = usp;
436 1.2 jonathan usp += sizeof (na);
437 1.2 jonathan /* allocate space above caller's stack for server sockaddr */
438 1.3 pk na.version = NFS_ARGSVERSION;
439 1.2 jonathan na.addr = (struct sockaddr *)usp;
440 1.2 jonathan usp += sizeof(*sap);
441 1.2 jonathan na.addrlen = sap->sin_len;
442 1.2 jonathan na.sotype = SOCK_DGRAM;
443 1.2 jonathan na.proto = IPPROTO_UDP;
444 1.2 jonathan na.fh = una.fh;
445 1.3 pk na.fhsize = NFSX_V2FH;
446 1.2 jonathan na.flags = /*una.flags;*/ NFSMNT_NOCONN | NFSMNT_RESVPORT;
447 1.2 jonathan na.wsize = una.wsize;
448 1.2 jonathan na.rsize = una.rsize;
449 1.2 jonathan na.timeo = una.timeo;
450 1.2 jonathan na.retrans = una.retrans;
451 1.2 jonathan na.hostname = una.hostname;
452 1.4 jonathan if ((error = copyout(sap, na.addr, sizeof (*sap) )) != 0)
453 1.2 jonathan return (error);
454 1.4 jonathan if ((error = copyout(&na, SCARG(&nuap, data), sizeof na)) != 0)
455 1.2 jonathan return (error);
456 1.2 jonathan }
457 1.2 jonathan return (sys_mount(p, &nuap, retval));
458 1.1 jonathan }
459