2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * osi_vfsops.c for NetBSD
13 #include <afsconfig.h>
14 #include "afs/param.h"
17 #include "afs/sysincludes.h" /* Standard vendor system headers */
18 #include "afsincludes.h" /* Afs-based standard headers */
19 #include "afs/afs_stats.h" /* statistics stuff */
20 #include <sys/types.h>
21 #include <kern/mach_param.h>
22 #include <sys/sysconfig.h>
23 #include <sys/systm.h>
24 #include <sys/resource.h>
25 #include <sys/errno.h>
27 #include <machine/machlimits.h>
30 struct vcache *afs_globalVp = 0;
31 struct mount *afs_globalVFS = 0;
33 static u_char afs_mntid;
35 udecl_simple_lock_data(, afsmntid_lock)
36 #define AFSMNTID_LOCK() usimple_lock(&afsmntid_lock)
37 #define AFSMNTID_UNLOCK() usimple_unlock(&afsmntid_lock)
38 #define AFSMNTID_LOCK_INIT() usimple_lock_init(&afsmntid_lock)
39 int mp_afs_mount(struct mount *afsp, char *path, caddr_t data,
40 struct nameidata *ndp)
45 struct mount *xmp, *getvfs();
49 AFS_STATCNT(afs_mount);
51 if (afs_globalVFS) { /* Don't allow remounts. */
57 afsp->vfs_bsize = 8192;
59 * Generate a unique afs mount i.d. ( see nfs_mount() ).
61 afsp->m_stat.f_fsid.val[0] = makedev(130, 0);
62 afsp->m_stat.f_fsid.val[1] = MOUNT_AFS;
68 tfsid.val[0] = makedev(130, afs_mntid);
69 tfsid.val[1] = MOUNT_AFS;
70 BM(AFSMNTID_UNLOCK());
72 while (xmp = getvfs(&tfsid)) {
73 UNMOUNT_READ_UNLOCK(xmp);
79 if (major(tfsid.val[0]) != 130) {
83 afsp->m_stat.f_fsid.val[0] = tfsid.val[0];
85 afsp->m_stat.f_mntonname = AFS_KALLOC(MNAMELEN);
86 afsp->m_stat.f_mntfromname = AFS_KALLOC(MNAMELEN);
87 if (!afsp->m_stat.f_mntonname || !afsp->m_stat.f_mntfromname)
88 panic("malloc failure in afs_mount\n");
90 memset(afsp->m_stat.f_mntonname, 0, MNAMELEN);
91 memset(afsp->m_stat.f_mntfromname, 0, MNAMELEN);
92 AFS_COPYINSTR(path, (caddr_t) afsp->m_stat.f_mntonname, MNAMELEN, &size,
94 memcpy(afsp->m_stat.f_mntfromname, "AFS", 4);
96 (void)mp_afs_statfs(afsp);
98 afs_vfsdev = afsp->m_stat.f_fsid.val[0];
100 #ifndef AFS_NONFSTRANS
101 /* Set up the xlator in case it wasn't done elsewhere */
111 mp_afs_unmount(struct mount *afsp, int flag)
114 AFS_STATCNT(afs_unmount);
123 mp_afs_start(struct mount *mp, int flags)
129 mp_afs_root(struct mount *afsp, struct vnode **avpp)
131 register afs_int32 code = 0;
132 struct vrequest treq;
133 register struct vcache *tvp = 0;
136 AFS_STATCNT(afs_root);
137 if (afs_globalVp && (afs_globalVp->f.states & CStatd)) {
141 afs_PutVCache(afs_globalVp);
145 if (!(code = afs_InitReq(&treq, cred)) && !(code = afs_CheckInit())) {
146 tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
147 /* we really want this to stay around */
156 VN_HOLD((struct vnode *)tvp);
157 VN_LOCK((struct vnode *)tvp);
158 tvp->v.v_flag |= VROOT; /* No-op on Ultrix 2.2 */
159 VN_UNLOCK((struct vnode *)tvp);
162 afs_globalVFS = afsp;
163 *avpp = (struct vnode *)tvp;
166 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
167 ICL_TYPE_INT32, code);
173 mp_afs_quotactl(struct mount * mp, int cmd, uid_t uid, caddr_t arg)
179 mp_afs_statfs(struct mount *afsp)
181 struct nstatfs *abp = &afsp->m_stat;
184 AFS_STATCNT(afs_statfs);
186 abp->f_type = MOUNT_AFS;
187 abp->f_bsize = afsp->vfs_bsize;
189 /* Fake a high number below to satisfy programs that use the statfs call
190 * to make sure that there's enough space in the device partition before
191 * storing something there.
193 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
194 abp->f_ffree = 2000000;
197 abp->f_fsid.val[0] = afsp->m_stat.f_fsid.val[0];
198 abp->f_fsid.val[1] = afsp->m_stat.f_fsid.val[1];
206 mp_afs_sync(struct mount *mp, int flags)
208 AFS_STATCNT(afs_sync);
214 mp_afs_fhtovp(struct mount *afsp, struct fid *fidp, struct vnode **avcp)
216 struct vrequest treq;
220 AFS_STATCNT(afs_vget);
224 if ((code = afs_InitReq(&treq, cred)) == 0) {
225 code = afs_osi_vget((struct vcache **)avcp, fidp, &treq);
228 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
229 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, fidp);
231 code = afs_CheckCode(code, &treq, 42);
240 * afs_vptofh can return two flavors of NFS fid, depending on if submounts are
241 * allowed. The reason for this is that we can't guarantee that we found all
242 * the entry points any OS might use to get the fid for the NFS mountd.
243 * Hence we return a "magic" fid for all but /afs. If it goes through the
244 * translator code, it will get transformed into a SmallFid that we recognize.
245 * So, if submounts are disallowed, and an NFS client tries a submount, it will
246 * get a fid which we don't recognize and the mount will either fail or we
247 * will ignore subsequent requests for that mount.
249 * The Alpha fid is organized differently than for other platforms. Their
250 * intention was to have the data portion of the fid aligned on a 4 byte
251 * boundary. To do so, the fid is organized as:
255 * The len field is the length of the entire fid, from reserved through data.
256 * This length is used by fid_copy to include copying the reserved field.
257 * Alpha's zero the reserved field before handing us the fid, but they use
258 * it in fid_cmp. We use the reserved field to store the 16 bits of the Vnode.
260 * Note that the SmallFid only allows for 8 bits of the cell index and
261 * 16 bits of the vnode.
264 #define AFS_FIDDATASIZE 8
265 #define AFS_SIZEOFSMALLFID 12 /* full size of fid, including len field */
266 extern int afs_NFSRootOnly; /* 1 => only allow NFS mounts of /afs. */
267 int afs_fid_vnodeoverflow = 0, afs_fid_uniqueoverflow = 0;
270 mp_afs_vptofh(struct vnode *avn, struct fid *fidp)
272 struct SmallFid Sfid;
274 register struct cell *tcell;
276 struct vcache *avc = VTOAFS(avn);
279 AFS_STATCNT(afs_fid);
281 if (afs_shuttingdown) {
286 if (afs_NFSRootOnly && (avc == afs_globalVp))
288 if (!afs_NFSRootOnly || rootvp) {
289 tcell = afs_GetCell(avc->f.fid.Cell, READ_LOCK);
290 Sfid.Volume = avc->f.fid.Fid.Volume;
291 fidp->fid_reserved = avc->f.fid.Fid.Vnode;
293 ((tcell->cellIndex << 24) + (avc->f.fid.Fid.Unique & 0xffffff));
294 afs_PutCell(tcell, READ_LOCK);
295 if (avc->f.fid.Fid.Vnode > 0xffff)
296 afs_fid_vnodeoverflow++;
297 if (avc->f.fid.Fid.Unique > 0xffffff)
298 afs_fid_uniqueoverflow++;
300 fidp->fid_reserved = AFS_XLATOR_MAGIC;
303 VN_HOLD((struct vnode *)avc);
307 /* Use the fid pointer passed to us. */
308 fidp->fid_len = AFS_SIZEOFSMALLFID;
309 if (afs_NFSRootOnly) {
311 memcpy(fidp->fid_data, (caddr_t) & Sfid, AFS_FIDDATASIZE);
313 memcpy(fidp->fid_data, (caddr_t) addr, AFS_FIDDATASIZE);
316 memcpy(fidp->fid_data, (caddr_t) & Sfid, AFS_FIDDATASIZE);
323 int mp_Afs_init(void); /* vfs_init - defined below */
326 /* This is only called by vfs_mount when afs is going to be mounted as root.
327 * Since we don't support diskless clients we shouldn't come here.
329 int afsmountroot = 0;
331 mp_afs_mountroot(struct mount *afsp, struct vnode **vp)
334 AFS_STATCNT(afs_mountroot);
341 /* It's called to setup swapping over the net for diskless clients; again
349 AFS_STATCNT(afs_swapvp);
356 struct vfsops afs_vfsops = {
364 mp_afs_fhtovp, /* afs_vget */
373 * System Call Entry Points
375 #define NULL_FUNC (int (*)(int))0
377 int (*afs_syscall_func) () = NULL_FUNC;
378 int (*afs_xsetgroups_func) () = NULL_FUNC;
379 int (*afs_xioctl_func) () = NULL_FUNC;
381 afssyscall(p, args, retval)
390 func = afs_syscall_func;
391 if (func == NULL_FUNC) {
392 code = nosys(p, args, retval);
394 code = (*func) (p, args, retval);
400 afsxsetgroups(p, args, retval)
409 func = afs_xsetgroups_func;
410 if (func == NULL_FUNC) {
411 code = nosys(p, args, retval);
413 code = (*func) (p, args, retval);
419 afsxioctl(p, args, retval)
428 func = afs_xioctl_func;
429 if (func == NULL_FUNC) {
430 code = nosys(p, args, retval);
432 code = (*func) (p, args, retval);
440 * VFS initialization and unload
449 cfg_subsys_attr_t afs_attributes[] = {
450 {"", 0, 0, 0, 0, 0, 0} /* must be the last element */
453 afs_configure(cfg_op_t op, caddr_t indata, size_t indata_size,
454 caddr_t outdata, size_t outdata_size)
456 cfg_attr_t *attributes;
462 case CFG_OP_CONFIGURE:
464 * The indata parameter is a list of attributes to be configured, and
465 * indata_size is the count of attributes.
467 if ((ret = vfssw_add_fsname(MOUNT_AFS, &afs_vfsops, "afs")) != 0)
470 case CFG_OP_UNCONFIGURE:
471 if ((ret = afs_unconfig()) != 0)
485 extern int Afs_xsetgroups(), afs_xioctl(), afs3_syscall();
488 sysent[AFS_SYSCALL].sy_call = afs3_syscall;
489 sysent[AFS_SYSCALL].sy_parallel = 0;
490 sysent[AFS_SYSCALL].sy_narg = 6;
491 sysent[SYS_setgroups].sy_call = Afs_xsetgroups;
492 afs_xioctl_func = afsxioctl;
493 afs_xsetgroups_func = afsxsetgroups;
494 afs_syscall_func = afssyscall;