1 /* Copyright (C) 1995, 1998 Transarc Corporation - All rights reserved. */
3 * (C) COPYRIGHT IBM CORPORATION 1987, 1988
4 * LICENSED MATERIALS - PROPERTY OF IBM
7 * osi_vfsops.c for SOLARIS
9 #include "../afs/param.h" /* Should be always first */
10 #include "../afs/sysincludes.h" /* Standard vendor system headers */
11 #include "../afs/afsincludes.h" /* Afs-based standard headers */
12 #include "../afs/afs_stats.h" /* statistics stuff */
13 #include "../h/modctl.h"
14 #include "../h/syscall.h"
19 struct vfs *afs_globalVFS = 0;
20 struct vcache *afs_globalVp = 0;
22 #if defined(AFS_SUN57_64BIT_ENV)
23 extern struct sysent sysent32[];
28 int afs_mount(struct vfs *afsp, struct vnode *amvp, struct mounta *uap,
29 struct AFS_UCRED *credp)
34 AFS_STATCNT(afs_mount);
38 afsp->vfs_fstype = afsfstype;
40 if (afs_globalVFS) { /* Don't allow remounts. */
45 afsp->vfs_bsize = 8192;
46 afsp->vfs_fsid.val[0] = AFS_VFSMAGIC; /* magic */
47 afsp->vfs_fsid.val[1] = AFS_VFSFSID;
53 int afs_unmount (struct vfs *afsp, struct AFS_UCRED *credp)
56 AFS_STATCNT(afs_unmount);
67 int afs_root (struct vfs *afsp, struct vnode **avpp)
69 register afs_int32 code = 0;
71 register struct vcache *tvp=0;
72 struct proc *proc = ttoproc(curthread);
73 struct vnode *vp = afsp->vfs_vnodecovered;
76 /* Potential deadlock:
77 * afs_root is called with the Vnode's v_lock locked. Set VVFSLOCK
78 * and drop the v_lock if we need to make an RPC to complete this
79 * request. There used to be a deadlock on the global lock until
80 * we stopped calling iget while holding the global lock.
85 AFS_STATCNT(afs_root);
87 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
90 if (MUTEX_HELD(&vp->v_lock)) {
91 vp->v_flag |= VVFSLOCK;
93 mutex_exit(&vp->v_lock);
95 if (!(code = afs_InitReq(&treq, proc->p_cred)) &&
96 !(code = afs_CheckInit())) {
97 tvp = afs_GetVCache(&afs_rootFid, &treq, (afs_int32 *)0,
98 (struct vcache*)0, WRITE_LOCK);
99 /* we really want this to stay around */
107 VN_HOLD((struct vnode *)tvp);
108 mutex_enter(&(((struct vnode*)tvp)->v_lock));
109 tvp->v.v_flag |= VROOT;
110 mutex_exit(&(((struct vnode*)tvp)->v_lock));
112 afs_globalVFS = afsp;
113 *avpp = (struct vnode *) tvp;
116 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
117 ICL_TYPE_INT32, code);
121 mutex_enter(&vp->v_lock);
122 vp->v_flag &= ~VVFSLOCK;
123 if (vp->v_flag & VVFSWAIT) {
124 vp->v_flag &= ~VVFSWAIT;
125 cv_broadcast(&vp->v_cv);
133 int afs_statvfs(struct vfs *afsp, struct statvfs64 *abp)
135 int afs_statvfs(struct vfs *afsp, struct statvfs *abp)
140 AFS_STATCNT(afs_statfs);
142 abp->f_frsize = 1024;
143 abp->f_favail = 9000000;
144 abp->f_bsize = afsp->vfs_bsize;
145 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
146 abp->f_ffree = 9000000;
147 abp->f_fsid = (AFS_VFSMAGIC << 16) || AFS_VFSFSID;
153 int afs_sync(struct vfs *afsp, short flags, struct AFS_UCRED *credp)
158 int afs_vget(struct vfs *afsp, struct vnode **avcp, struct fid *fidp)
160 cred_t *credp = CRED();
161 struct vrequest treq;
166 AFS_STATCNT(afs_vget);
169 if (!(code = afs_InitReq(&treq, credp))) {
170 code = afs_osi_vget((struct vcache**)avcp, fidp, &treq);
173 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
174 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, fidp);
175 code = afs_CheckCode(code, &treq, 42);
181 /* This is only called by vfs_mount when afs is going to be mounted as root.
182 * Since we don't support diskless clients we shouldn't come here.
185 afs_mountroot(struct vfs *afsp, whymountroot_t why)
188 AFS_STATCNT(afs_mountroot);
194 /* afs_swapvp is called to setup swapping over the net for diskless clients.
198 afs_swapvp(struct vfs *afsp, struct vnode **avpp, char *nm)
201 AFS_STATCNT(afs_swapvp);
208 struct vfsops Afs_vfsops = {
221 * afsinit - intialize VFS
224 int (*ufs_iallocp)();
225 void (*ufs_iupdatp)();
228 struct streamtab *udp_infop = 0;
229 struct ill_s *ill_g_headp = 0;
233 #if !defined(AFS_NONFSTRANS)
234 int (*nfs_rfsdisptab_v2)();
235 int (*nfs_rfsdisptab_v3)();
236 int (*nfs_acldisptab_v2)();
237 int (*nfs_acldisptab_v3)();
239 int (*nfs_checkauth)();
242 extern Afs_syscall();
244 afsinit(struct vfssw *vfsswp, int fstype)
246 extern int afs_xioctl(), afs_xflock();
247 extern int afs_xsetgroups();
249 AFS_STATCNT(afsinit);
251 sysent[SYS_setgroups].sy_callc = afs_xsetgroups;
252 sysent[SYS_ioctl].sy_call = afs_xioctl;
254 #if defined(AFS_SUN57_64BIT_ENV)
255 sysent32[SYS_setgroups].sy_callc = afs_xsetgroups;
256 sysent32[SYS_ioctl].sy_call = afs_xioctl;
259 vfsswp->vsw_vfsops = &Afs_vfsops;
263 #if !defined(AFS_NONFSTRANS)
264 nfs_rfsdisptab_v2 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v2");
265 if ( !nfs_rfsdisptab_v2 ) {
266 afs_warn("warning : rfsdisptab_v2 NOT FOUND\n");
268 if (nfs_rfsdisptab_v2) {
269 nfs_acldisptab_v2 = (int (*)()) modlookup("nfssrv", "acldisptab_v2");
270 if ( !nfs_acldisptab_v2 ) {
271 afs_warn("warning : acldisptab_v2 NOT FOUND\n");
274 afs_xlatorinit_v2(nfs_rfsdisptab_v2, nfs_acldisptab_v2);
277 nfs_rfsdisptab_v3 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v3");
278 if ( !nfs_rfsdisptab_v3 ) {
279 afs_warn("warning : rfsdisptab_v3 NOT FOUND\n");
281 if (nfs_rfsdisptab_v3) {
282 nfs_acldisptab_v3 = (int (*)()) modlookup("nfssrv", "acldisptab_v3");
283 if ( !nfs_acldisptab_v3 ) {
284 afs_warn("warning : acldisptab_v3 NOT FOUND\n");
287 afs_xlatorinit_v3(nfs_rfsdisptab_v3, nfs_acldisptab_v3);
291 nfs_checkauth = (int (*)()) modlookup("nfssrv", "checkauth");
292 if ( !nfs_checkauth ) afs_warn("nfs_checkauth not initialised");
294 ufs_iputp = (int (*)()) modlookup("ufs", "ufs_iput");
295 ufs_iallocp = (int (*)()) modlookup("ufs", "ufs_ialloc");
296 ufs_iupdatp = (int (*)()) modlookup("ufs", "ufs_iupdat");
297 ufs_igetp = (int (*)()) modlookup("ufs", "ufs_iget");
298 udp_infop = (struct streamtab *) modlookup("udp", "udpinfo");
299 ill_g_headp = (struct ill_s *) modlookup("ip", "ill_g_head");
301 if ( !ufs_iputp || !ufs_iallocp || !ufs_iupdatp ||
302 !ufs_igetp || !udp_infop || !ill_g_headp )
303 afs_warn("AFS to UFS mapping cannot be fully initialised\n");
310 static struct vfssw afs_vfw = {
317 static struct sysent afssysent = {
323 /* inter-module dependencies */
324 char _depends_on[] = "drv/ip drv/udp strmod/rpcmod";
327 * Info/Structs to link the afs module into the kernel
329 extern struct mod_ops mod_fsops;
330 extern struct mod_ops mod_syscallops;
332 static struct modlfs afsmodlfs = {
338 static struct modlsys afsmodlsys = {
340 "afs syscall interface",
344 /** The two structures afssysent32 and afsmodlsys32 are being added
345 * for supporting 32 bit syscalls. In Solaris 7 there are two system
346 * tables viz. sysent ans sysent32. 32 bit applications use sysent32.
347 * Since most of our user space binaries are going to be 32 bit
348 * we need to attach to sysent32 also. Note that the entry into AFS
349 * land still happens through Afs_syscall irrespective of whether we
350 * land here from sysent or sysent32
353 #if defined(AFS_SUN57_64BIT_ENV)
354 extern struct mod_ops mod_syscallops32;
356 static struct modlsys afsmodlsys32 = {
358 "afs syscall interface(32 bit)",
364 static struct modlinkage afs_modlinkage = {
367 #ifdef AFS_SUN57_64BIT_ENV
368 (void *)&afsmodlsys32,
374 /** This is the function that modload calls when loading the afs kernel
375 * extensions. The solaris modload program searches for the _init
376 * function in a module and calls it when modloading
381 char *sysn, *mod_getsysname();
383 extern char *sysbind;
384 extern struct bind *sb_hashtab[];
385 struct modctl *mp = 0;
387 if ((!(mp = mod_find_by_filename("fs", "ufs")) &&
388 !(mp = mod_find_by_filename(NULL, "/kernel/fs/ufs")) &&
389 !(mp = mod_find_by_filename(NULL, "sys/ufs"))) ||
390 (mp && !mp->mod_installed)) {
391 printf("ufs module must be loaded before loading afs; use modload /kernel/fs/ufs\n");
394 #ifndef AFS_NONFSTRANS
395 #if defined(AFS_SUN55_ENV)
396 if ((!(mp = mod_find_by_filename("misc", "nfssrv")) &&
397 !(mp = mod_find_by_filename(NULL, NFSSRV)) &&
398 !(mp = mod_find_by_filename(NULL, NFSSRV_V9))) ||
399 (mp && !mp->mod_installed)) {
400 printf("misc/nfssrv module must be loaded before loading afs with nfs-xlator\n");
404 #if defined(AFS_SUN52_ENV)
405 if ((!(mp = mod_find_by_filename("fs", "nfs")) &&
406 !(mp = mod_find_by_filename(NULL, "/kernel/fs/nfs")) &&
407 !(mp = mod_find_by_filename(NULL, "sys/nfs"))) ||
408 (mp && !mp->mod_installed)) {
409 printf("fs/nfs module must be loaded before loading afs with nfs-xlator\n");
416 * Re-read the /etc/name_to_sysnum file to make sure afs isn't added after
417 * reboot. Ideally we would like to call modctl_read_sysbinding_file() but
418 * unfortunately in Solaris 2.2 it became a local function so we have to do
419 * the read_binding_file() direct call with the appropriate text file and
420 * system call hashtable. make_syscallname actually copies "afs" to the
421 * proper slot entry and we also actually have to properly initialize the
422 * global sysent[AFS_SYSCALL] entry!
426 #define SYSBINDFILE "/etc/name_to_sysnum"
428 read_binding_file(SYSBINDFILE, sb_hashtab);
430 read_binding_file(sysbind, sb_hashtab);
432 make_syscallname("afs", AFS_SYSCALL);
434 if (sysent[AFS_SYSCALL].sy_call == nosys) {
435 if ((sysn = mod_getsysname(AFS_SYSCALL)) != NULL) {
436 sysent[AFS_SYSCALL].sy_lock =
437 (krwlock_t *) kobj_zalloc(sizeof (krwlock_t), KM_SLEEP);
438 rw_init(sysent[AFS_SYSCALL].sy_lock, "afs_syscall",
442 RW_DEFAULT, DEFAULT_WT);
447 osi_Init(); /* initialize global lock, etc */
449 code = mod_install(&afs_modlinkage);
454 struct modinfo *modp;
458 code = mod_info(&afs_modlinkage, modp);
468 code = mod_remove(&afs_modlinkage);