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;
52 afsp->vfs_dev = AFS_VFSMAGIC;
58 #if defined(AFS_SUN58_ENV)
59 int afs_unmount (struct vfs *afsp, int flag, struct AFS_UCRED *credp)
61 int afs_unmount (struct vfs *afsp, struct AFS_UCRED *credp)
65 AFS_STATCNT(afs_unmount);
76 int afs_root (struct vfs *afsp, struct vnode **avpp)
78 register afs_int32 code = 0;
80 register struct vcache *tvp=0;
81 struct proc *proc = ttoproc(curthread);
82 struct vnode *vp = afsp->vfs_vnodecovered;
85 /* Potential deadlock:
86 * afs_root is called with the Vnode's v_lock locked. Set VVFSLOCK
87 * and drop the v_lock if we need to make an RPC to complete this
88 * request. There used to be a deadlock on the global lock until
89 * we stopped calling iget while holding the global lock.
94 AFS_STATCNT(afs_root);
96 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
99 if (MUTEX_HELD(&vp->v_lock)) {
100 vp->v_flag |= VVFSLOCK;
102 mutex_exit(&vp->v_lock);
104 if (!(code = afs_InitReq(&treq, proc->p_cred)) &&
105 !(code = afs_CheckInit())) {
106 tvp = afs_GetVCache(&afs_rootFid, &treq, (afs_int32 *)0,
107 (struct vcache*)0, WRITE_LOCK);
108 /* we really want this to stay around */
116 VN_HOLD((struct vnode *)tvp);
117 mutex_enter(&(((struct vnode*)tvp)->v_lock));
118 tvp->v.v_flag |= VROOT;
119 mutex_exit(&(((struct vnode*)tvp)->v_lock));
121 afs_globalVFS = afsp;
122 *avpp = (struct vnode *) tvp;
125 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
126 ICL_TYPE_INT32, code);
130 mutex_enter(&vp->v_lock);
131 vp->v_flag &= ~VVFSLOCK;
132 if (vp->v_flag & VVFSWAIT) {
133 vp->v_flag &= ~VVFSWAIT;
134 cv_broadcast(&vp->v_cv);
142 int afs_statvfs(struct vfs *afsp, struct statvfs64 *abp)
144 int afs_statvfs(struct vfs *afsp, struct statvfs *abp)
149 AFS_STATCNT(afs_statfs);
151 abp->f_frsize = 1024;
152 abp->f_favail = 9000000;
153 abp->f_bsize = afsp->vfs_bsize;
154 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
155 abp->f_ffree = 9000000;
156 abp->f_fsid = (AFS_VFSMAGIC << 16) || AFS_VFSFSID;
162 int afs_sync(struct vfs *afsp, short flags, struct AFS_UCRED *credp)
167 int afs_vget(struct vfs *afsp, struct vnode **avcp, struct fid *fidp)
169 cred_t *credp = CRED();
170 struct vrequest treq;
175 AFS_STATCNT(afs_vget);
178 if (!(code = afs_InitReq(&treq, credp))) {
179 code = afs_osi_vget((struct vcache**)avcp, fidp, &treq);
182 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
183 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, fidp);
184 code = afs_CheckCode(code, &treq, 42);
190 /* This is only called by vfs_mount when afs is going to be mounted as root.
191 * Since we don't support diskless clients we shouldn't come here.
194 afs_mountroot(struct vfs *afsp, whymountroot_t why)
197 AFS_STATCNT(afs_mountroot);
203 /* afs_swapvp is called to setup swapping over the net for diskless clients.
207 afs_swapvp(struct vfs *afsp, struct vnode **avpp, char *nm)
210 AFS_STATCNT(afs_swapvp);
217 struct vfsops Afs_vfsops = {
226 #if defined(AFS_SUN58_ENV)
233 * afsinit - intialize VFS
235 int (*ufs_iallocp)();
236 void (*ufs_iupdatp)();
238 void (*ufs_itimes_nolockp)();
240 struct streamtab *udp_infop = 0;
241 struct ill_s *ill_g_headp = 0;
245 #if !defined(AFS_NONFSTRANS)
246 int (*nfs_rfsdisptab_v2)();
247 int (*nfs_rfsdisptab_v3)();
248 int (*nfs_acldisptab_v2)();
249 int (*nfs_acldisptab_v3)();
251 int (*nfs_checkauth)();
254 extern Afs_syscall();
256 afsinit(struct vfssw *vfsswp, int fstype)
258 extern int afs_xioctl(), afs_xflock();
259 extern int afs_xsetgroups();
261 AFS_STATCNT(afsinit);
263 sysent[SYS_setgroups].sy_callc = afs_xsetgroups;
264 sysent[SYS_ioctl].sy_call = afs_xioctl;
266 #if defined(AFS_SUN57_64BIT_ENV)
267 sysent32[SYS_setgroups].sy_callc = afs_xsetgroups;
268 sysent32[SYS_ioctl].sy_call = afs_xioctl;
271 vfsswp->vsw_vfsops = &Afs_vfsops;
275 #if !defined(AFS_NONFSTRANS)
276 nfs_rfsdisptab_v2 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v2");
277 if ( !nfs_rfsdisptab_v2 ) {
278 afs_warn("warning : rfsdisptab_v2 NOT FOUND\n");
280 if (nfs_rfsdisptab_v2) {
281 nfs_acldisptab_v2 = (int (*)()) modlookup("nfssrv", "acldisptab_v2");
282 if ( !nfs_acldisptab_v2 ) {
283 afs_warn("warning : acldisptab_v2 NOT FOUND\n");
286 afs_xlatorinit_v2(nfs_rfsdisptab_v2, nfs_acldisptab_v2);
289 nfs_rfsdisptab_v3 = (int (*)()) modlookup("nfssrv", "rfsdisptab_v3");
290 if ( !nfs_rfsdisptab_v3 ) {
291 afs_warn("warning : rfsdisptab_v3 NOT FOUND\n");
293 if (nfs_rfsdisptab_v3) {
294 nfs_acldisptab_v3 = (int (*)()) modlookup("nfssrv", "acldisptab_v3");
295 if ( !nfs_acldisptab_v3 ) {
296 afs_warn("warning : acldisptab_v3 NOT FOUND\n");
299 afs_xlatorinit_v3(nfs_rfsdisptab_v3, nfs_acldisptab_v3);
303 nfs_checkauth = (int (*)()) modlookup("nfssrv", "checkauth");
304 if ( !nfs_checkauth ) afs_warn("nfs_checkauth not initialised");
306 ufs_iallocp = (int (*)()) modlookup("ufs", "ufs_ialloc");
307 ufs_iupdatp = (int (*)()) modlookup("ufs", "ufs_iupdat");
308 ufs_igetp = (int (*)()) modlookup("ufs", "ufs_iget");
309 ufs_itimes_nolockp = (void (*)()) modlookup("ufs", "ufs_itimes_nolock");
310 udp_infop = (struct streamtab *) modlookup("udp", "udpinfo");
311 ill_g_headp = (struct ill_s *) modlookup("ip", "ill_g_head");
313 if ( !ufs_iallocp || !ufs_iupdatp || !ufs_itimes_nolockp ||
314 !ufs_igetp || !udp_infop || !ill_g_headp )
315 afs_warn("AFS to UFS mapping cannot be fully initialised\n");
322 static struct vfssw afs_vfw = {
329 static struct sysent afssysent = {
335 /* inter-module dependencies */
336 char _depends_on[] = "drv/ip drv/udp strmod/rpcmod";
339 * Info/Structs to link the afs module into the kernel
341 extern struct mod_ops mod_fsops;
342 extern struct mod_ops mod_syscallops;
344 static struct modlfs afsmodlfs = {
350 static struct modlsys afsmodlsys = {
352 "afs syscall interface",
356 /** The two structures afssysent32 and afsmodlsys32 are being added
357 * for supporting 32 bit syscalls. In Solaris 7 there are two system
358 * tables viz. sysent ans sysent32. 32 bit applications use sysent32.
359 * Since most of our user space binaries are going to be 32 bit
360 * we need to attach to sysent32 also. Note that the entry into AFS
361 * land still happens through Afs_syscall irrespective of whether we
362 * land here from sysent or sysent32
365 #if defined(AFS_SUN57_64BIT_ENV)
366 extern struct mod_ops mod_syscallops32;
368 static struct modlsys afsmodlsys32 = {
370 "afs syscall interface(32 bit)",
376 static struct modlinkage afs_modlinkage = {
379 #ifdef AFS_SUN57_64BIT_ENV
380 (void *)&afsmodlsys32,
386 /** This is the function that modload calls when loading the afs kernel
387 * extensions. The solaris modload program searches for the _init
388 * function in a module and calls it when modloading
393 char *sysn, *mod_getsysname();
395 extern char *sysbind;
396 extern struct bind *sb_hashtab[];
397 struct modctl *mp = 0;
399 if ((!(mp = mod_find_by_filename("fs", "ufs")) &&
400 !(mp = mod_find_by_filename(NULL, "/kernel/fs/ufs")) &&
401 !(mp = mod_find_by_filename(NULL, "sys/ufs"))) ||
402 (mp && !mp->mod_installed)) {
403 printf("ufs module must be loaded before loading afs; use modload /kernel/fs/ufs\n");
406 #ifndef AFS_NONFSTRANS
407 #if defined(AFS_SUN55_ENV)
408 if ((!(mp = mod_find_by_filename("misc", "nfssrv")) &&
409 !(mp = mod_find_by_filename(NULL, NFSSRV)) &&
410 !(mp = mod_find_by_filename(NULL, NFSSRV_V9))) ||
411 (mp && !mp->mod_installed)) {
412 printf("misc/nfssrv module must be loaded before loading afs with nfs-xlator\n");
416 #if defined(AFS_SUN52_ENV)
417 if ((!(mp = mod_find_by_filename("fs", "nfs")) &&
418 !(mp = mod_find_by_filename(NULL, "/kernel/fs/nfs")) &&
419 !(mp = mod_find_by_filename(NULL, "sys/nfs"))) ||
420 (mp && !mp->mod_installed)) {
421 printf("fs/nfs module must be loaded before loading afs with nfs-xlator\n");
428 * Re-read the /etc/name_to_sysnum file to make sure afs isn't added after
429 * reboot. Ideally we would like to call modctl_read_sysbinding_file() but
430 * unfortunately in Solaris 2.2 it became a local function so we have to do
431 * the read_binding_file() direct call with the appropriate text file and
432 * system call hashtable. make_syscallname actually copies "afs" to the
433 * proper slot entry and we also actually have to properly initialize the
434 * global sysent[AFS_SYSCALL] entry!
438 #define SYSBINDFILE "/etc/name_to_sysnum"
440 read_binding_file(SYSBINDFILE, sb_hashtab);
442 read_binding_file(sysbind, sb_hashtab);
444 #if !defined(AFS_SUN58_ENV)
445 make_syscallname("afs", AFS_SYSCALL);
448 if (sysent[AFS_SYSCALL].sy_call == nosys) {
449 if ((sysn = mod_getsysname(AFS_SYSCALL)) != NULL) {
450 sysent[AFS_SYSCALL].sy_lock =
451 (krwlock_t *) kobj_zalloc(sizeof (krwlock_t), KM_SLEEP);
452 rw_init(sysent[AFS_SYSCALL].sy_lock, "afs_syscall",
456 RW_DEFAULT, DEFAULT_WT);
461 osi_Init(); /* initialize global lock, etc */
463 code = mod_install(&afs_modlinkage);
468 struct modinfo *modp;
472 code = mod_info(&afs_modlinkage, modp);
482 code = mod_remove(&afs_modlinkage);