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 SOLARIS
13 #include "../afs/param.h" /* Should be always first */
14 #include "../afs/sysincludes.h" /* Standard vendor system headers */
15 #include "../afs/afsincludes.h" /* Afs-based standard headers */
16 #include "../afs/afs_stats.h" /* statistics stuff */
17 #include "../h/modctl.h"
18 #include "../h/syscall.h"
23 struct vfs *afs_globalVFS = 0;
24 struct vcache *afs_globalVp = 0;
26 #if defined(AFS_SUN57_64BIT_ENV)
27 extern struct sysent sysent32[];
32 int afs_mount(struct vfs *afsp, struct vnode *amvp, struct mounta *uap,
33 struct AFS_UCRED *credp)
38 AFS_STATCNT(afs_mount);
42 afsp->vfs_fstype = afsfstype;
44 if (afs_globalVFS) { /* Don't allow remounts. */
49 afsp->vfs_bsize = 8192;
50 afsp->vfs_fsid.val[0] = AFS_VFSMAGIC; /* magic */
51 afsp->vfs_fsid.val[1] = AFS_VFSFSID;
57 int afs_unmount (struct vfs *afsp, struct AFS_UCRED *credp)
60 AFS_STATCNT(afs_unmount);
71 int afs_root (struct vfs *afsp, struct vnode **avpp)
73 register afs_int32 code = 0;
75 register struct vcache *tvp=0;
76 struct proc *proc = ttoproc(curthread);
77 struct vnode *vp = afsp->vfs_vnodecovered;
80 /* Potential deadlock:
81 * afs_root is called with the Vnode's v_lock locked. Set VVFSLOCK
82 * and drop the v_lock if we need to make an RPC to complete this
83 * request. There used to be a deadlock on the global lock until
84 * we stopped calling iget while holding the global lock.
89 AFS_STATCNT(afs_root);
91 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
94 if (MUTEX_HELD(&vp->v_lock)) {
95 vp->v_flag |= VVFSLOCK;
97 mutex_exit(&vp->v_lock);
99 if (!(code = afs_InitReq(&treq, proc->p_cred)) &&
100 !(code = afs_CheckInit())) {
101 tvp = afs_GetVCache(&afs_rootFid, &treq, (afs_int32 *)0,
102 (struct vcache*)0, WRITE_LOCK);
103 /* we really want this to stay around */
111 VN_HOLD((struct vnode *)tvp);
112 mutex_enter(&(((struct vnode*)tvp)->v_lock));
113 tvp->v.v_flag |= VROOT;
114 mutex_exit(&(((struct vnode*)tvp)->v_lock));
116 afs_globalVFS = afsp;
117 *avpp = (struct vnode *) tvp;
120 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
121 ICL_TYPE_INT32, code);
125 mutex_enter(&vp->v_lock);
126 vp->v_flag &= ~VVFSLOCK;
127 if (vp->v_flag & VVFSWAIT) {
128 vp->v_flag &= ~VVFSWAIT;
129 cv_broadcast(&vp->v_cv);
137 int afs_statvfs(struct vfs *afsp, struct statvfs64 *abp)
139 int afs_statvfs(struct vfs *afsp, struct statvfs *abp)
144 AFS_STATCNT(afs_statfs);
146 abp->f_frsize = 1024;
147 abp->f_favail = 9000000;
148 abp->f_bsize = afsp->vfs_bsize;
149 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
150 abp->f_ffree = 9000000;
151 abp->f_fsid = (AFS_VFSMAGIC << 16) || AFS_VFSFSID;
157 int afs_sync(struct vfs *afsp, short flags, struct AFS_UCRED *credp)
162 int afs_vget(struct vfs *afsp, struct vnode **avcp, struct fid *fidp)
164 cred_t *credp = CRED();
165 struct vrequest treq;
170 AFS_STATCNT(afs_vget);
173 if (!(code = afs_InitReq(&treq, credp))) {
174 code = afs_osi_vget((struct vcache**)avcp, fidp, &treq);
177 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
178 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, fidp);
179 code = afs_CheckCode(code, &treq, 42);
185 /* This is only called by vfs_mount when afs is going to be mounted as root.
186 * Since we don't support diskless clients we shouldn't come here.
189 afs_mountroot(struct vfs *afsp, whymountroot_t why)
192 AFS_STATCNT(afs_mountroot);
198 /* afs_swapvp is called to setup swapping over the net for diskless clients.
202 afs_swapvp(struct vfs *afsp, struct vnode **avpp, char *nm)
205 AFS_STATCNT(afs_swapvp);
212 struct vfsops Afs_vfsops = {
225 * afsinit - intialize VFS
228 int (*ufs_iallocp)();
229 void (*ufs_iupdatp)();
232 struct streamtab *udp_infop = 0;
233 struct ill_s *ill_g_headp = 0;
237 #if !defined(AFS_NONFSTRANS)
238 int (*nfs_rfsdisptab_v2)();
239 int (*nfs_rfsdisptab_v3)();
240 int (*nfs_acldisptab_v2)();
241 int (*nfs_acldisptab_v3)();
243 int (*nfs_checkauth)();
246 extern Afs_syscall();
248 afsinit(struct vfssw *vfsswp, int fstype)
250 extern int afs_xioctl(), afs_xflock();
251 extern int afs_xsetgroups();
253 AFS_STATCNT(afsinit);
255 sysent[SYS_setgroups].sy_callc = afs_xsetgroups;
256 sysent[SYS_ioctl].sy_call = afs_xioctl;
258 #if defined(AFS_SUN57_64BIT_ENV)
259 sysent32[SYS_setgroups].sy_callc = afs_xsetgroups;
260 sysent32[SYS_ioctl].sy_call = afs_xioctl;
263 vfsswp->vsw_vfsops = &Afs_vfsops;
267 #if !defined(AFS_NONFSTRANS)
268 nfs_rfsdisptab_v2 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v2");
269 if ( !nfs_rfsdisptab_v2 ) {
270 afs_warn("warning : rfsdisptab_v2 NOT FOUND\n");
272 if (nfs_rfsdisptab_v2) {
273 nfs_acldisptab_v2 = (int (*)()) modlookup("nfssrv", "acldisptab_v2");
274 if ( !nfs_acldisptab_v2 ) {
275 afs_warn("warning : acldisptab_v2 NOT FOUND\n");
278 afs_xlatorinit_v2(nfs_rfsdisptab_v2, nfs_acldisptab_v2);
281 nfs_rfsdisptab_v3 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v3");
282 if ( !nfs_rfsdisptab_v3 ) {
283 afs_warn("warning : rfsdisptab_v3 NOT FOUND\n");
285 if (nfs_rfsdisptab_v3) {
286 nfs_acldisptab_v3 = (int (*)()) modlookup("nfssrv", "acldisptab_v3");
287 if ( !nfs_acldisptab_v3 ) {
288 afs_warn("warning : acldisptab_v3 NOT FOUND\n");
291 afs_xlatorinit_v3(nfs_rfsdisptab_v3, nfs_acldisptab_v3);
295 nfs_checkauth = (int (*)()) modlookup("nfssrv", "checkauth");
296 if ( !nfs_checkauth ) afs_warn("nfs_checkauth not initialised");
298 ufs_iputp = (int (*)()) modlookup("ufs", "ufs_iput");
299 ufs_iallocp = (int (*)()) modlookup("ufs", "ufs_ialloc");
300 ufs_iupdatp = (int (*)()) modlookup("ufs", "ufs_iupdat");
301 ufs_igetp = (int (*)()) modlookup("ufs", "ufs_iget");
302 udp_infop = (struct streamtab *) modlookup("udp", "udpinfo");
303 ill_g_headp = (struct ill_s *) modlookup("ip", "ill_g_head");
305 if ( !ufs_iputp || !ufs_iallocp || !ufs_iupdatp ||
306 !ufs_igetp || !udp_infop || !ill_g_headp )
307 afs_warn("AFS to UFS mapping cannot be fully initialised\n");
314 static struct vfssw afs_vfw = {
321 static struct sysent afssysent = {
327 /* inter-module dependencies */
328 char _depends_on[] = "drv/ip drv/udp strmod/rpcmod";
331 * Info/Structs to link the afs module into the kernel
333 extern struct mod_ops mod_fsops;
334 extern struct mod_ops mod_syscallops;
336 static struct modlfs afsmodlfs = {
342 static struct modlsys afsmodlsys = {
344 "afs syscall interface",
348 /** The two structures afssysent32 and afsmodlsys32 are being added
349 * for supporting 32 bit syscalls. In Solaris 7 there are two system
350 * tables viz. sysent ans sysent32. 32 bit applications use sysent32.
351 * Since most of our user space binaries are going to be 32 bit
352 * we need to attach to sysent32 also. Note that the entry into AFS
353 * land still happens through Afs_syscall irrespective of whether we
354 * land here from sysent or sysent32
357 #if defined(AFS_SUN57_64BIT_ENV)
358 extern struct mod_ops mod_syscallops32;
360 static struct modlsys afsmodlsys32 = {
362 "afs syscall interface(32 bit)",
368 static struct modlinkage afs_modlinkage = {
371 #ifdef AFS_SUN57_64BIT_ENV
372 (void *)&afsmodlsys32,
378 /** This is the function that modload calls when loading the afs kernel
379 * extensions. The solaris modload program searches for the _init
380 * function in a module and calls it when modloading
385 char *sysn, *mod_getsysname();
387 extern char *sysbind;
388 extern struct bind *sb_hashtab[];
389 struct modctl *mp = 0;
391 if ((!(mp = mod_find_by_filename("fs", "ufs")) &&
392 !(mp = mod_find_by_filename(NULL, "/kernel/fs/ufs")) &&
393 !(mp = mod_find_by_filename(NULL, "sys/ufs"))) ||
394 (mp && !mp->mod_installed)) {
395 printf("ufs module must be loaded before loading afs; use modload /kernel/fs/ufs\n");
398 #ifndef AFS_NONFSTRANS
399 #if defined(AFS_SUN55_ENV)
400 if ((!(mp = mod_find_by_filename("misc", "nfssrv")) &&
401 !(mp = mod_find_by_filename(NULL, NFSSRV)) &&
402 !(mp = mod_find_by_filename(NULL, NFSSRV_V9))) ||
403 (mp && !mp->mod_installed)) {
404 printf("misc/nfssrv module must be loaded before loading afs with nfs-xlator\n");
408 #if defined(AFS_SUN52_ENV)
409 if ((!(mp = mod_find_by_filename("fs", "nfs")) &&
410 !(mp = mod_find_by_filename(NULL, "/kernel/fs/nfs")) &&
411 !(mp = mod_find_by_filename(NULL, "sys/nfs"))) ||
412 (mp && !mp->mod_installed)) {
413 printf("fs/nfs module must be loaded before loading afs with nfs-xlator\n");
420 * Re-read the /etc/name_to_sysnum file to make sure afs isn't added after
421 * reboot. Ideally we would like to call modctl_read_sysbinding_file() but
422 * unfortunately in Solaris 2.2 it became a local function so we have to do
423 * the read_binding_file() direct call with the appropriate text file and
424 * system call hashtable. make_syscallname actually copies "afs" to the
425 * proper slot entry and we also actually have to properly initialize the
426 * global sysent[AFS_SYSCALL] entry!
430 #define SYSBINDFILE "/etc/name_to_sysnum"
432 read_binding_file(SYSBINDFILE, sb_hashtab);
434 read_binding_file(sysbind, sb_hashtab);
436 #if !defined(AFS_SUN58_ENV)
437 make_syscallname("afs", AFS_SYSCALL);
440 if (sysent[AFS_SYSCALL].sy_call == nosys) {
441 if ((sysn = mod_getsysname(AFS_SYSCALL)) != NULL) {
442 sysent[AFS_SYSCALL].sy_lock =
443 (krwlock_t *) kobj_zalloc(sizeof (krwlock_t), KM_SLEEP);
444 rw_init(sysent[AFS_SYSCALL].sy_lock, "afs_syscall",
448 RW_DEFAULT, DEFAULT_WT);
453 osi_Init(); /* initialize global lock, etc */
455 code = mod_install(&afs_modlinkage);
460 struct modinfo *modp;
464 code = mod_info(&afs_modlinkage, modp);
474 code = mod_remove(&afs_modlinkage);