nwfs_vfsops.c revision 74637
1169092Sdeischen/* 2169092Sdeischen * Copyright (c) 1999, 2000 Boris Popov 3169092Sdeischen * All rights reserved. 4157196Sdeischen * 5157196Sdeischen * Redistribution and use in source and binary forms, with or without 6157196Sdeischen * modification, are permitted provided that the following conditions 7157196Sdeischen * are met: 8157196Sdeischen * 1. Redistributions of source code must retain the above copyright 9157196Sdeischen * notice, this list of conditions and the following disclaimer. 10157196Sdeischen * 2. Redistributions in binary form must reproduce the above copyright 11157196Sdeischen * notice, this list of conditions and the following disclaimer in the 12157196Sdeischen * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: head/sys/fs/nwfs/nwfs_vfsops.c 74637 2001-03-22 06:51:53Z bp $ 33 */ 34#include "opt_ncp.h" 35#ifndef NCP 36#error "NWFS requires NCP protocol" 37#endif 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/proc.h> 42#include <sys/kernel.h> 43#include <sys/sysctl.h> 44#include <sys/vnode.h> 45#include <sys/mount.h> 46#include <sys/stat.h> 47#include <sys/malloc.h> 48#include <sys/bio.h> 49#include <sys/buf.h> 50 51#include <netncp/ncp.h> 52#include <netncp/ncp_conn.h> 53#include <netncp/ncp_subr.h> 54#include <netncp/ncp_ncp.h> 55#include <netncp/ncp_nls.h> 56 57#include <nwfs/nwfs.h> 58#include <nwfs/nwfs_node.h> 59#include <nwfs/nwfs_subr.h> 60 61int nwfs_debuglevel = 0; 62 63static int nwfs_version = NWFS_VERSION; 64 65SYSCTL_DECL(_vfs_nwfs); 66SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware file system"); 67SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, ""); 68SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, ""); 69 70MODULE_DEPEND(nwfs, ncp, 1, 1, 1); 71MODULE_DEPEND(nwfs, libmchain, 1, 1, 1); 72 73static int nwfs_mount(struct mount *, char *, caddr_t, 74 struct nameidata *, struct proc *); 75static int nwfs_quotactl(struct mount *, int, uid_t, caddr_t, struct proc *); 76static int nwfs_root(struct mount *, struct vnode **); 77static int nwfs_start(struct mount *, int, struct proc *); 78static int nwfs_statfs(struct mount *, struct statfs *, struct proc *); 79static int nwfs_sync(struct mount *, int, struct ucred *, struct proc *); 80static int nwfs_unmount(struct mount *, int, struct proc *); 81static int nwfs_init(struct vfsconf *vfsp); 82static int nwfs_uninit(struct vfsconf *vfsp); 83 84static struct vfsops nwfs_vfsops = { 85 nwfs_mount, 86 nwfs_start, 87 nwfs_unmount, 88 nwfs_root, 89 nwfs_quotactl, 90 nwfs_statfs, 91 nwfs_sync, 92 vfs_stdvget, 93 vfs_stdfhtovp, /* shouldn't happen */ 94 vfs_stdcheckexp, 95 vfs_stdvptofh, /* shouldn't happen */ 96 nwfs_init, 97 nwfs_uninit, 98 vfs_stdextattrctl, 99}; 100 101 102VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK); 103 104int nwfs_pbuf_freecnt = -1; /* start out unlimited */ 105static int nwfsid = 1; 106 107static int 108nwfs_initnls(struct nwmount *nmp) { 109 char *pc, *pe; 110 int error = 0; 111#define COPY_TABLE(t,d) { \ 112 if (t) { \ 113 error = copyin((t), pc, 256); \ 114 if (error) break; \ 115 } else \ 116 bcopy(d, pc, 256); \ 117 (t) = pc; pc += 256; \ 118 } 119 120 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS; 121 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) { 122 nmp->m.nls.to_lower = ncp_defnls.to_lower; 123 nmp->m.nls.to_upper = ncp_defnls.to_upper; 124 nmp->m.nls.n2u = ncp_defnls.n2u; 125 nmp->m.nls.u2n = ncp_defnls.u2n; 126 return 0; 127 } 128 MALLOC(pe, char *, 256 * 4, M_NWFSDATA, M_WAITOK); 129 pc = pe; 130 do { 131 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower); 132 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper); 133 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u); 134 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n); 135 } while(0); 136 if (error) { 137 free(pe, M_NWFSDATA); 138 return error; 139 } 140 return 0; 141} 142/* 143 * mp - path - addr in user space of mount point (ie /usr or whatever) 144 * data - addr in user space of mount params 145 */ 146static int nwfs_mount(struct mount *mp, char *path, caddr_t data, 147 struct nameidata *ndp, struct proc *p) 148{ 149 struct nwfs_args args; /* will hold data from mount request */ 150 int error; 151 struct nwmount *nmp = NULL; 152 struct ncp_conn *conn = NULL; 153 struct ncp_handle *handle = NULL; 154 struct vnode *vp; 155 char *pc,*pe; 156 157 if (data == NULL) { 158 nwfs_printf("missing data argument\n"); 159 return 1; 160 } 161 if (mp->mnt_flag & MNT_UPDATE) { 162 nwfs_printf("MNT_UPDATE not implemented"); 163 return (EOPNOTSUPP); 164 } 165 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args)); 166 if (error) 167 return (error); 168 if (args.version != NWFS_VERSION) { 169 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version); 170 return (1); 171 } 172 error = ncp_conn_getbyref(args.connRef,p,p->p_ucred,NCPM_EXECUTE,&conn); 173 if (error) { 174 nwfs_printf("invalid connection refernce %d\n",args.connRef); 175 return (error); 176 } 177 error = ncp_conn_gethandle(conn, NULL, &handle); 178 if (error) { 179 nwfs_printf("can't get connection handle\n"); 180 return (error); 181 } 182 ncp_conn_unlock(conn,p); /* we keep the ref */ 183 mp->mnt_stat.f_iosize = conn->buffer_size; 184 /* We must malloc our own mount info */ 185 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA,M_USE_RESERVE | M_ZERO); 186 if (nmp == NULL) { 187 nwfs_printf("could not alloc nwmount\n"); 188 error = ENOMEM; 189 goto bad; 190 } 191 mp->mnt_data = (qaddr_t)nmp; 192 nmp->connh = handle; 193 nmp->n_root = NULL; 194 nmp->n_id = nwfsid++; 195 nmp->m = args; 196 nmp->m.file_mode = (nmp->m.file_mode & 197 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG; 198 nmp->m.dir_mode = (nmp->m.dir_mode & 199 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR; 200 if ((error = nwfs_initnls(nmp)) != 0) goto bad; 201 pc = mp->mnt_stat.f_mntfromname; 202 pe = pc+sizeof(mp->mnt_stat.f_mntfromname); 203 bzero(pc, MNAMELEN); 204 *(pc++) = '/'; 205 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0); 206 if (pc < pe-1) { 207 *(pc++) = ':'; 208 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0); 209 if (pc < pe-1) { 210 *(pc++) = '/'; 211 strncpy(pc, nmp->m.mounted_vol, pe-pc-2); 212 } 213 } 214 /* protect against invalid mount points */ 215 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0'; 216 vfs_getnewfsid(mp); 217 error = nwfs_root(mp, &vp); 218 if (error) 219 goto bad; 220 /* 221 * Lose the lock but keep the ref. 222 */ 223 VOP_UNLOCK(vp, 0, curproc); 224 NCPVODEBUG("rootvp.vrefcnt=%d\n",vp->v_usecount); 225 return error; 226bad: 227 if (nmp) 228 free(nmp, M_NWFSDATA); 229 if (handle) 230 ncp_conn_puthandle(handle, NULL, 0); 231 return error; 232} 233 234/* Unmount the filesystem described by mp. */ 235static int 236nwfs_unmount(struct mount *mp, int mntflags, struct proc *p) 237{ 238 struct nwmount *nmp = VFSTONWFS(mp); 239 struct ncp_conn *conn; 240 struct vnode *vp; 241 int error, flags; 242 243 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags); 244 flags = 0; 245 if (mntflags & MNT_FORCE) 246 flags |= FORCECLOSE; 247 error = VFS_ROOT(mp,&vp); 248 if (error) return (error); 249 if (vp->v_usecount > 2) { 250 printf("nwfs_unmount: usecnt=%d\n",vp->v_usecount); 251 vput(vp); 252 return (EBUSY); 253 } 254 error = vflush(mp, vp, flags); 255 if (error) { 256 vput(vp); 257 return (error); 258 } 259 /* 260 * There are two reference counts and one lock to get rid of here. 261 */ 262 NCPVODEBUG("v_use: %d\n",vp->v_usecount); 263 vput(vp); 264 NCPVODEBUG("v_use after vput: %d\n",vp->v_usecount); 265 vrele(vp); 266 NCPVODEBUG("v_use after vrele: %d\n",vp->v_usecount); 267 vgone(vp); 268 NCPVODEBUG("v_gone finished !!!!\n"); 269 conn = NWFSTOCONN(nmp); 270 ncp_conn_puthandle(nmp->connh,NULL,0); 271 if (ncp_conn_lock(conn,p,p->p_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) { 272 if(ncp_conn_free(conn)) 273 ncp_conn_unlock(conn,p); 274 } 275 mp->mnt_data = (qaddr_t)0; 276 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS) 277 free(nmp->m.nls.to_lower, M_NWFSDATA); 278 free(nmp, M_NWFSDATA); 279 mp->mnt_flag &= ~MNT_LOCAL; 280 return (error); 281} 282 283/* Return locked vnode to root of a filesystem */ 284static int 285nwfs_root(struct mount *mp, struct vnode **vpp) { 286 struct vnode *vp; 287 struct nwmount *nmp; 288 struct nwnode *np; 289 struct ncp_conn *conn; 290 struct nw_entry_info fattr; 291 struct proc *p = curproc; 292 struct ucred *cred = p->p_ucred; 293 int error, nsf, opt; 294 u_char vol; 295 296 nmp = VFSTONWFS(mp); 297 conn = NWFSTOCONN(nmp); 298 if (nmp->n_root) { 299 *vpp = NWTOV(nmp->n_root); 300 while (vget(*vpp, LK_EXCLUSIVE, curproc) != 0) 301 ; 302 return 0; 303 } 304 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol, 305 &nmp->n_rootent.f_id, p, cred); 306 if (error) 307 return ENOENT; 308 nmp->n_volume = vol; 309 error = ncp_get_namespaces(conn, vol, &nsf, p, cred); 310 if (error) 311 return ENOENT; 312 if (nsf & NW_NSB_OS2) { 313 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol); 314 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) { 315 nmp->name_space = NW_NS_OS2; 316 nmp->m.nls.opt &= ~NWHP_DOS; 317 } 318 } 319 opt = nmp->m.nls.opt; 320 nsf = opt & (NWHP_UPPER | NWHP_LOWER); 321 if (opt & NWHP_DOS) { 322 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 323 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 324 } else if (nsf == 0) { 325 nmp->m.nls.opt |= NWHP_LOWER; 326 } 327 } else { 328 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 329 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 330 } 331 } 332 if (nmp->m.root_path[0]) { 333 nmp->m.root_path[0]--; 334 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 335 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred); 336 if (error) { 337 NCPFATAL("Invalid root path specified\n"); 338 return ENOENT; 339 } 340 nmp->n_rootent.f_parent = fattr.dirEntNum; 341 nmp->m.root_path[0]++; 342 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 343 -nmp->m.root_path[0], nmp->m.root_path, &fattr, p, cred); 344 if (error) { 345 NCPFATAL("Invalid root path specified\n"); 346 return ENOENT; 347 } 348 nmp->n_rootent.f_id = fattr.dirEntNum; 349 } else { 350 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 351 0, NULL, &fattr, p, cred); 352 if (error) { 353 NCPFATAL("Can't obtain volume info\n"); 354 return ENOENT; 355 } 356 fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT")); 357 nmp->n_rootent.f_parent = nmp->n_rootent.f_id; 358 } 359 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp); 360 if (error) 361 return (error); 362 vp->v_flag |= VROOT; 363 np = VTONW(vp); 364 if (nmp->m.root_path[0] == 0) 365 np->n_flag |= NVOLUME; 366 nmp->n_root = np; 367/* error = VOP_GETATTR(vp, &vattr, cred, p); 368 if (error) { 369 vput(vp); 370 NCPFATAL("Can't get root directory entry\n"); 371 return error; 372 }*/ 373 *vpp = vp; 374 return (0); 375} 376 377/* 378 * Vfs start routine, a no-op. 379 */ 380/* ARGSUSED */ 381static int 382nwfs_start(mp, flags, p) 383 struct mount *mp; 384 int flags; 385 struct proc *p; 386{ 387 NCPVODEBUG("flags=%04x\n",flags); 388 return (0); 389} 390 391/* 392 * Do operations associated with quotas, not supported 393 */ 394/* ARGSUSED */ 395static int 396nwfs_quotactl(mp, cmd, uid, arg, p) 397 struct mount *mp; 398 int cmd; 399 uid_t uid; 400 caddr_t arg; 401 struct proc *p; 402{ 403 NCPVODEBUG("return EOPNOTSUPP\n"); 404 return (EOPNOTSUPP); 405} 406 407/*ARGSUSED*/ 408int 409nwfs_init(struct vfsconf *vfsp) 410{ 411#ifndef SMP 412 int name[2]; 413 int olen, ncpu, plen, error; 414 415 name[0] = CTL_HW; 416 name[1] = HW_NCPU; 417 error = kernel_sysctl(curproc, name, 2, &ncpu, &olen, NULL, 0, &plen); 418 if (error == 0 && ncpu > 1) 419 printf("warning: nwfs module compiled without SMP support."); 420#endif 421 nwfs_hash_init(); 422 nwfs_pbuf_freecnt = nswbuf / 2 + 1; 423 NCPVODEBUG("always happy to load!\n"); 424 return (0); 425} 426 427/*ARGSUSED*/ 428int 429nwfs_uninit(struct vfsconf *vfsp) 430{ 431 432 nwfs_hash_free(); 433 NCPVODEBUG("unloaded\n"); 434 return (0); 435} 436 437/* 438 * nwfs_statfs call 439 */ 440int 441nwfs_statfs(mp, sbp, p) 442 struct mount *mp; 443 struct statfs *sbp; 444 struct proc *p; 445{ 446 struct nwmount *nmp = VFSTONWFS(mp); 447 int error = 0, secsize; 448 struct nwnode *np = nmp->n_root; 449 struct ncp_volume_info vi; 450 451 if (np == NULL) return EINVAL; 452 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), nmp->n_volume, &vi,p,p->p_ucred); 453 if (error) return error; 454 secsize = 512; /* XXX how to get real value ??? */ 455 sbp->f_spare2=0; /* placeholder */ 456 /* fundamental file system block size */ 457 sbp->f_bsize = vi.sectors_per_block*secsize; 458 /* optimal transfer block size */ 459 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size; 460 /* total data blocks in file system */ 461 sbp->f_blocks= vi.total_blocks; 462 /* free blocks in fs */ 463 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks; 464 /* free blocks avail to non-superuser */ 465 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks; 466 /* total file nodes in file system */ 467 sbp->f_files = vi.total_dir_entries; 468 /* free file nodes in fs */ 469 sbp->f_ffree = vi.available_dir_entries; 470 sbp->f_flags = 0; /* copy of mount exported flags */ 471 if (sbp != &mp->mnt_stat) { 472 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */ 473 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */ 474 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */ 475 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 476 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 477 } 478 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN); 479 return 0; 480} 481 482/* 483 * Flush out the buffer cache 484 */ 485/* ARGSUSED */ 486static int 487nwfs_sync(mp, waitfor, cred, p) 488 struct mount *mp; 489 int waitfor; 490 struct ucred *cred; 491 struct proc *p; 492{ 493 struct vnode *vp; 494 int error, allerror = 0; 495 /* 496 * Force stale buffer cache information to be flushed. 497 */ 498loop: 499 for (vp = LIST_FIRST(&mp->mnt_vnodelist); 500 vp != NULL; 501 vp = LIST_NEXT(vp, v_mntvnodes)) { 502 /* 503 * If the vnode that we are about to sync is no longer 504 * associated with this mount point, start over. 505 */ 506 if (vp->v_mount != mp) 507 goto loop; 508 if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) || 509 waitfor == MNT_LAZY) 510 continue; 511 if (vget(vp, LK_EXCLUSIVE, p)) 512 goto loop; 513 error = VOP_FSYNC(vp, cred, waitfor, p); 514 if (error) 515 allerror = error; 516 vput(vp); 517 } 518 return (allerror); 519} 520