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 <afsconfig.h>
14 #include "../afs/param.h"
18 #include "../afs/sysincludes.h" /* Standard vendor system headers */
19 #include "../afs/afsincludes.h" /* Afs-based standard headers */
20 #include "../afs/afs_stats.h" /* statistics stuff */
21 #include "../h/modctl.h"
22 #include "../h/syscall.h"
27 struct vfs *afs_globalVFS = 0;
28 struct vcache *afs_globalVp = 0;
30 #if defined(AFS_SUN57_64BIT_ENV)
31 extern struct sysent sysent32[];
36 int afs_mount(struct vfs *afsp, struct vnode *amvp, struct mounta *uap,
37 struct AFS_UCRED *credp)
42 AFS_STATCNT(afs_mount);
48 afsp->vfs_fstype = afsfstype;
50 if (afs_globalVFS) { /* Don't allow remounts. */
56 afsp->vfs_bsize = 8192;
57 afsp->vfs_fsid.val[0] = AFS_VFSMAGIC; /* magic */
58 afsp->vfs_fsid.val[1] = AFS_VFSFSID;
59 afsp->vfs_dev = AFS_VFSMAGIC;
65 #if defined(AFS_SUN58_ENV)
66 int afs_unmount (struct vfs *afsp, int flag, struct AFS_UCRED *credp)
68 int afs_unmount (struct vfs *afsp, struct AFS_UCRED *credp)
72 AFS_STATCNT(afs_unmount);
85 int afs_root (struct vfs *afsp, struct vnode **avpp)
87 register afs_int32 code = 0;
89 register struct vcache *tvp=0;
90 struct proc *proc = ttoproc(curthread);
91 struct vnode *vp = afsp->vfs_vnodecovered;
94 /* Potential deadlock:
95 * afs_root is called with the Vnode's v_lock locked. Set VVFSLOCK
96 * and drop the v_lock if we need to make an RPC to complete this
97 * request. There used to be a deadlock on the global lock until
98 * we stopped calling iget while holding the global lock.
103 AFS_STATCNT(afs_root);
105 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
108 if (MUTEX_HELD(&vp->v_lock)) {
109 vp->v_flag |= VVFSLOCK;
111 mutex_exit(&vp->v_lock);
115 afs_PutVCache(afs_globalVp);
119 if (!(code = afs_InitReq(&treq, proc->p_cred)) &&
120 !(code = afs_CheckInit())) {
121 tvp = afs_GetVCache(&afs_rootFid, &treq, (afs_int32 *)0,
122 (struct vcache*)0, WRITE_LOCK);
123 /* we really want this to stay around */
131 VN_HOLD(AFSTOV(tvp));
132 mutex_enter(&AFSTOV(tvp)->v_lock);
133 AFSTOV(tvp)->v_flag |= VROOT;
134 mutex_exit(&AFSTOV(tvp)->v_lock);
136 afs_globalVFS = afsp;
140 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
141 ICL_TYPE_INT32, code);
145 mutex_enter(&vp->v_lock);
146 vp->v_flag &= ~VVFSLOCK;
147 if (vp->v_flag & VVFSWAIT) {
148 vp->v_flag &= ~VVFSWAIT;
149 cv_broadcast(&vp->v_cv);
157 int afs_statvfs(struct vfs *afsp, struct statvfs64 *abp)
159 int afs_statvfs(struct vfs *afsp, struct statvfs *abp)
164 AFS_STATCNT(afs_statfs);
166 abp->f_frsize = 1024;
167 abp->f_favail = 9000000;
168 abp->f_bsize = afsp->vfs_bsize;
169 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
170 abp->f_ffree = 9000000;
171 abp->f_fsid = (AFS_VFSMAGIC << 16) || AFS_VFSFSID;
177 int afs_sync(struct vfs *afsp, short flags, struct AFS_UCRED *credp)
182 int afs_vget(struct vfs *afsp, struct vnode **avcp, struct fid *fidp)
184 cred_t *credp = CRED();
185 struct vrequest treq;
190 AFS_STATCNT(afs_vget);
193 if (!(code = afs_InitReq(&treq, credp))) {
194 code = afs_osi_vget((struct vcache**)avcp, fidp, &treq);
197 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
198 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, fidp);
199 code = afs_CheckCode(code, &treq, 42);
205 /* This is only called by vfs_mount when afs is going to be mounted as root.
206 * Since we don't support diskless clients we shouldn't come here.
209 afs_mountroot(struct vfs *afsp, whymountroot_t why)
212 AFS_STATCNT(afs_mountroot);
218 /* afs_swapvp is called to setup swapping over the net for diskless clients.
222 afs_swapvp(struct vfs *afsp, struct vnode **avpp, char *nm)
225 AFS_STATCNT(afs_swapvp);
232 struct vfsops Afs_vfsops = {
241 #if defined(AFS_SUN58_ENV)
248 * afsinit - intialize VFS
250 int (*ufs_iallocp)();
251 void (*ufs_iupdatp)();
253 void (*ufs_itimes_nolockp)();
255 int (*afs_orig_ioctl)(), (*afs_orig_ioctl32)();
256 int (*afs_orig_setgroups)(), (*afs_orig_setgroups32)();
258 struct streamtab *udp_infop = 0;
259 struct ill_s *ill_g_headp = 0;
263 #if !defined(AFS_NONFSTRANS)
264 int (*nfs_rfsdisptab_v2)();
265 int (*nfs_rfsdisptab_v3)();
266 int (*nfs_acldisptab_v2)();
267 int (*nfs_acldisptab_v3)();
269 int (*nfs_checkauth)();
272 extern Afs_syscall();
274 afsinit(struct vfssw *vfsswp, int fstype)
276 extern int afs_xioctl();
277 extern int afs_xsetgroups();
279 AFS_STATCNT(afsinit);
281 afs_orig_setgroups = sysent[SYS_setgroups].sy_callc;
282 afs_orig_ioctl = sysent[SYS_ioctl].sy_call;
283 sysent[SYS_setgroups].sy_callc = afs_xsetgroups;
284 sysent[SYS_ioctl].sy_call = afs_xioctl;
286 #if defined(AFS_SUN57_64BIT_ENV)
287 afs_orig_setgroups32 = sysent32[SYS_setgroups].sy_callc;
288 afs_orig_ioctl32 = sysent32[SYS_ioctl].sy_call;
289 sysent32[SYS_setgroups].sy_callc = afs_xsetgroups;
290 sysent32[SYS_ioctl].sy_call = afs_xioctl;
293 vfsswp->vsw_vfsops = &Afs_vfsops;
297 #if !defined(AFS_NONFSTRANS)
298 nfs_rfsdisptab_v2 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v2");
299 if ( !nfs_rfsdisptab_v2 ) {
300 afs_warn("warning : rfsdisptab_v2 NOT FOUND\n");
302 if (nfs_rfsdisptab_v2) {
303 nfs_acldisptab_v2 = (int (*)()) modlookup("nfssrv", "acldisptab_v2");
304 if ( !nfs_acldisptab_v2 ) {
305 afs_warn("warning : acldisptab_v2 NOT FOUND\n");
308 afs_xlatorinit_v2(nfs_rfsdisptab_v2, nfs_acldisptab_v2);
311 nfs_rfsdisptab_v3 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v3");
312 if ( !nfs_rfsdisptab_v3 ) {
313 afs_warn("warning : rfsdisptab_v3 NOT FOUND\n");
315 if (nfs_rfsdisptab_v3) {
316 nfs_acldisptab_v3 = (int (*)()) modlookup("nfssrv", "acldisptab_v3");
317 if ( !nfs_acldisptab_v3 ) {
318 afs_warn("warning : acldisptab_v3 NOT FOUND\n");
321 afs_xlatorinit_v3(nfs_rfsdisptab_v3, nfs_acldisptab_v3);
325 nfs_checkauth = (int (*)()) modlookup("nfssrv", "checkauth");
326 if ( !nfs_checkauth ) afs_warn("nfs_checkauth not initialised");
328 ufs_iallocp = (int (*)()) modlookup("ufs", "ufs_ialloc");
329 ufs_iupdatp = (void (*)()) modlookup("ufs", "ufs_iupdat");
330 ufs_igetp = (int (*)()) modlookup("ufs", "ufs_iget");
331 ufs_itimes_nolockp = (void (*)()) modlookup("ufs", "ufs_itimes_nolock");
332 udp_infop = (struct streamtab *) modlookup("udp", "udpinfo");
333 ill_g_headp = (struct ill_s *) modlookup("ip", "ill_g_head");
335 if ( !ufs_iallocp || !ufs_iupdatp || !ufs_itimes_nolockp ||
336 !ufs_igetp || !udp_infop || !ill_g_headp )
337 afs_warn("AFS to UFS mapping cannot be fully initialised\n");
344 static struct vfssw afs_vfw = {
351 static struct sysent afssysent = {
357 /* inter-module dependencies */
358 char _depends_on[] = "drv/ip drv/udp strmod/rpcmod";
361 * Info/Structs to link the afs module into the kernel
363 extern struct mod_ops mod_fsops;
364 extern struct mod_ops mod_syscallops;
366 static struct modlfs afsmodlfs = {
372 static struct modlsys afsmodlsys = {
374 "afs syscall interface",
378 /** The two structures afssysent32 and afsmodlsys32 are being added
379 * for supporting 32 bit syscalls. In Solaris 7 there are two system
380 * tables viz. sysent ans sysent32. 32 bit applications use sysent32.
381 * Since most of our user space binaries are going to be 32 bit
382 * we need to attach to sysent32 also. Note that the entry into AFS
383 * land still happens through Afs_syscall irrespective of whether we
384 * land here from sysent or sysent32
387 #if defined(AFS_SUN57_64BIT_ENV)
388 extern struct mod_ops mod_syscallops32;
390 static struct modlsys afsmodlsys32 = {
392 "afs syscall interface(32 bit)",
398 static struct modlinkage afs_modlinkage = {
401 #ifdef AFS_SUN57_64BIT_ENV
402 (void *)&afsmodlsys32,
408 /** This is the function that modload calls when loading the afs kernel
409 * extensions. The solaris modload program searches for the _init
410 * function in a module and calls it when modloading
415 char *sysn, *mod_getsysname();
417 extern char *sysbind;
418 extern struct bind *sb_hashtab[];
419 struct modctl *mp = 0;
424 if ((!(mp = mod_find_by_filename("fs", "ufs")) &&
425 !(mp = mod_find_by_filename(NULL, "/kernel/fs/ufs")) &&
426 !(mp = mod_find_by_filename(NULL, "sys/ufs"))) ||
427 (mp && !mp->mod_installed)) {
428 printf("ufs module must be loaded before loading afs; use modload /kernel/fs/ufs\n");
431 #ifndef AFS_NONFSTRANS
432 #if defined(AFS_SUN55_ENV)
433 if ((!(mp = mod_find_by_filename("misc", "nfssrv")) &&
434 !(mp = mod_find_by_filename(NULL, NFSSRV)) &&
435 !(mp = mod_find_by_filename(NULL, NFSSRV_V9))) ||
436 (mp && !mp->mod_installed)) {
437 printf("misc/nfssrv module must be loaded before loading afs with nfs-xlator\n");
441 #if defined(AFS_SUN52_ENV)
442 if ((!(mp = mod_find_by_filename("fs", "nfs")) &&
443 !(mp = mod_find_by_filename(NULL, "/kernel/fs/nfs")) &&
444 !(mp = mod_find_by_filename(NULL, "sys/nfs"))) ||
445 (mp && !mp->mod_installed)) {
446 printf("fs/nfs module must be loaded before loading afs with nfs-xlator\n");
453 * Re-read the /etc/name_to_sysnum file to make sure afs isn't added after
454 * reboot. Ideally we would like to call modctl_read_sysbinding_file() but
455 * unfortunately in Solaris 2.2 it became a local function so we have to do
456 * the read_binding_file() direct call with the appropriate text file and
457 * system call hashtable. make_syscallname actually copies "afs" to the
458 * proper slot entry and we also actually have to properly initialize the
459 * global sysent[AFS_SYSCALL] entry!
463 #define SYSBINDFILE "/etc/name_to_sysnum"
465 read_binding_file(SYSBINDFILE, sb_hashtab);
467 read_binding_file(sysbind, sb_hashtab);
469 #if !defined(AFS_SUN58_ENV)
470 make_syscallname("afs", AFS_SYSCALL);
473 if (sysent[AFS_SYSCALL].sy_call == nosys) {
474 if ((sysn = mod_getsysname(AFS_SYSCALL)) != NULL) {
475 sysent[AFS_SYSCALL].sy_lock =
476 (krwlock_t *) kobj_zalloc(sizeof (krwlock_t), KM_SLEEP);
477 rw_init(sysent[AFS_SYSCALL].sy_lock, "afs_syscall",
481 RW_DEFAULT, DEFAULT_WT);
486 osi_Init(); /* initialize global lock, etc */
488 code = mod_install(&afs_modlinkage);
493 struct modinfo *modp;
497 code = mod_info(&afs_modlinkage, modp);
509 sysent[SYS_setgroups].sy_callc = afs_orig_setgroups;
510 sysent[SYS_ioctl].sy_call = afs_orig_ioctl;
511 #if defined(AFS_SUN57_64BIT_ENV)
512 sysent32[SYS_setgroups].sy_callc = afs_orig_setgroups32;
513 sysent32[SYS_ioctl].sy_call = afs_orig_ioctl32;
516 code = mod_remove(&afs_modlinkage);