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"
19 #include "afs/sysincludes.h" /* Standard vendor system headers */
20 #include "afsincludes.h" /* Afs-based standard headers */
21 #include "afs/afs_stats.h" /* statistics stuff */
23 #include "h/syscall.h"
28 struct vfs *afs_globalVFS = 0;
29 struct vcache *afs_globalVp = 0;
31 #if defined(AFS_SUN57_64BIT_ENV)
32 extern struct sysent sysent32[];
38 afs_mount(struct vfs *afsp, struct vnode *amvp, struct mounta *uap,
39 struct AFS_UCRED *credp)
44 AFS_STATCNT(afs_mount);
50 afsp->vfs_fstype = afsfstype;
52 if (afs_globalVFS) { /* Don't allow remounts. */
58 afsp->vfs_bsize = 8192;
59 afsp->vfs_fsid.val[0] = AFS_VFSMAGIC; /* magic */
60 afsp->vfs_fsid.val[1] = AFS_VFSFSID;
61 afsp->vfs_dev = AFS_VFSMAGIC;
67 #if defined(AFS_SUN58_ENV)
69 afs_unmount(struct vfs *afsp, int flag, struct AFS_UCRED *credp)
72 afs_unmount(struct vfs *afsp, struct AFS_UCRED *credp)
76 AFS_STATCNT(afs_unmount);
90 afs_root(struct vfs *afsp, struct vnode **avpp)
92 register afs_int32 code = 0;
94 register struct vcache *tvp = 0;
95 struct proc *proc = ttoproc(curthread);
96 struct vnode *vp = afsp->vfs_vnodecovered;
99 /* Potential deadlock:
100 * afs_root is called with the Vnode's v_lock locked. Set VVFSLOCK
101 * and drop the v_lock if we need to make an RPC to complete this
102 * request. There used to be a deadlock on the global lock until
103 * we stopped calling iget while holding the global lock.
108 AFS_STATCNT(afs_root);
110 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
113 if (MUTEX_HELD(&vp->v_lock)) {
114 vp->v_flag |= VVFSLOCK;
116 mutex_exit(&vp->v_lock);
120 afs_PutVCache(afs_globalVp);
124 if (!(code = afs_InitReq(&treq, proc->p_cred))
125 && !(code = afs_CheckInit())) {
126 tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
127 /* we really want this to stay around */
135 VN_HOLD(AFSTOV(tvp));
136 mutex_enter(&AFSTOV(tvp)->v_lock);
137 AFSTOV(tvp)->v_flag |= VROOT;
138 mutex_exit(&AFSTOV(tvp)->v_lock);
140 afs_globalVFS = afsp;
144 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
145 ICL_TYPE_INT32, code);
149 mutex_enter(&vp->v_lock);
150 vp->v_flag &= ~VVFSLOCK;
151 if (vp->v_flag & VVFSWAIT) {
152 vp->v_flag &= ~VVFSWAIT;
153 cv_broadcast(&vp->v_cv);
162 afs_statvfs(struct vfs *afsp, struct statvfs64 *abp)
165 afs_statvfs(struct vfs *afsp, struct statvfs *abp)
170 AFS_STATCNT(afs_statfs);
172 abp->f_frsize = 1024;
173 abp->f_favail = 9000000;
174 abp->f_bsize = afsp->vfs_bsize;
175 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
176 abp->f_ffree = 9000000;
177 abp->f_fsid = (AFS_VFSMAGIC << 16) || AFS_VFSFSID;
184 afs_sync(struct vfs *afsp, short flags, struct AFS_UCRED *credp)
190 afs_vget(struct vfs *afsp, struct vnode **avcp, struct fid *fidp)
192 cred_t *credp = CRED();
193 struct vrequest treq;
198 AFS_STATCNT(afs_vget);
201 if (!(code = afs_InitReq(&treq, credp))) {
202 code = afs_osi_vget((struct vcache **)avcp, fidp, &treq);
205 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
206 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, fidp);
207 code = afs_CheckCode(code, &treq, 42);
213 /* This is only called by vfs_mount when afs is going to be mounted as root.
214 * Since we don't support diskless clients we shouldn't come here.
216 int afsmountroot = 0;
217 afs_mountroot(struct vfs *afsp, whymountroot_t why)
220 AFS_STATCNT(afs_mountroot);
226 /* afs_swapvp is called to setup swapping over the net for diskless clients.
230 afs_swapvp(struct vfs *afsp, struct vnode **avpp, char *nm)
233 AFS_STATCNT(afs_swapvp);
240 #ifdef AFS_SUN510_ENV
241 struct fs_operation_def afs_vfsops_template[] = {
242 { VFSNAME_MOUNT, afs_mount },
243 { VFSNAME_UNMOUNT, afs_unmount },
244 { VFSNAME_ROOT, afs_root },
245 { VFSNAME_STATVFS, afs_statvfs },
246 { VFSNAME_SYNC, afs_sync },
247 { VFSNAME_VGET, afs_vget },
248 { VFSNAME_MOUNTROOT, afs_mountroot },
249 { VFSNAME_FREEVFS, fs_freevfs },
251 struct vfsops *afs_vfsopsp;
253 struct vfsops Afs_vfsops = {
262 #if defined(AFS_SUN58_ENV)
270 * afsinit - intialize VFS
272 int (*ufs_iallocp) ();
273 void (*ufs_iupdatp) ();
275 void (*ufs_itimes_nolockp) ();
277 int (*afs_orig_ioctl) (), (*afs_orig_ioctl32) ();
278 int (*afs_orig_setgroups) (), (*afs_orig_setgroups32) ();
280 struct streamtab *udp_infop = 0;
281 #ifndef AFS_SUN510_ENV
282 struct ill_s *ill_g_headp = 0;
287 extern struct fs_operation_def afs_vnodeops_template[];
289 #if !defined(AFS_NONFSTRANS)
290 int (*nfs_rfsdisptab_v2) ();
291 int (*nfs_rfsdisptab_v3) ();
292 int (*nfs_acldisptab_v2) ();
293 int (*nfs_acldisptab_v3) ();
295 int (*nfs_checkauth) ();
298 extern Afs_syscall();
300 #ifdef AFS_SUN510_ENV
301 afsinit(int fstype, char *dummy)
303 afsinit(struct vfssw *vfsswp, int fstype)
306 extern int afs_xioctl();
307 extern int afs_xsetgroups();
309 AFS_STATCNT(afsinit);
311 afs_orig_setgroups = sysent[SYS_setgroups].sy_callc;
312 afs_orig_ioctl = sysent[SYS_ioctl].sy_call;
313 sysent[SYS_setgroups].sy_callc = afs_xsetgroups;
314 sysent[SYS_ioctl].sy_call = afs_xioctl;
316 #if defined(AFS_SUN57_64BIT_ENV)
317 afs_orig_setgroups32 = sysent32[SYS_setgroups].sy_callc;
318 afs_orig_ioctl32 = sysent32[SYS_ioctl].sy_call;
319 sysent32[SYS_setgroups].sy_callc = afs_xsetgroups;
320 sysent32[SYS_ioctl].sy_call = afs_xioctl;
323 #ifdef AFS_SUN510_ENV
324 vfs_setfsops(fstype, afs_vfsops_template, &afs_vfsopsp);
326 vn_make_ops("afs", afs_vnodeops_template, &afs_ops);
328 vfsswp->vsw_vfsops = &Afs_vfsops;
333 #if !defined(AFS_NONFSTRANS)
334 nfs_rfsdisptab_v2 = (int (*)())modlookup("nfssrv", "rfsdisptab_v2");
335 if (!nfs_rfsdisptab_v2) {
336 afs_warn("warning : rfsdisptab_v2 NOT FOUND\n");
338 if (nfs_rfsdisptab_v2) {
339 nfs_acldisptab_v2 = (int (*)())modlookup("nfssrv", "acldisptab_v2");
340 if (!nfs_acldisptab_v2) {
341 afs_warn("warning : acldisptab_v2 NOT FOUND\n");
343 afs_xlatorinit_v2(nfs_rfsdisptab_v2, nfs_acldisptab_v2);
346 nfs_rfsdisptab_v3 = (int (*)())modlookup("nfssrv", "rfsdisptab_v3");
347 if (!nfs_rfsdisptab_v3) {
348 afs_warn("warning : rfsdisptab_v3 NOT FOUND\n");
350 if (nfs_rfsdisptab_v3) {
351 nfs_acldisptab_v3 = (int (*)())modlookup("nfssrv", "acldisptab_v3");
352 if (!nfs_acldisptab_v3) {
353 afs_warn("warning : acldisptab_v3 NOT FOUND\n");
355 afs_xlatorinit_v3(nfs_rfsdisptab_v3, nfs_acldisptab_v3);
359 nfs_checkauth = (int (*)())modlookup("nfssrv", "checkauth");
361 afs_warn("nfs_checkauth not initialised");
363 ufs_iallocp = (int (*)())modlookup("ufs", "ufs_ialloc");
364 ufs_iupdatp = (void (*)())modlookup("ufs", "ufs_iupdat");
365 ufs_igetp = (int (*)())modlookup("ufs", "ufs_iget");
366 ufs_itimes_nolockp = (void (*)())modlookup("ufs", "ufs_itimes_nolock");
367 udp_infop = (struct streamtab *)modlookup("udp", "udpinfo");
368 #ifdef AFS_SUN510_ENV
369 if (!ufs_iallocp || !ufs_iupdatp || !ufs_itimes_nolockp || !ufs_igetp
371 afs_warn("AFS to UFS mapping cannot be fully initialised\n");
373 ill_g_headp = (struct ill_s *)modlookup("ip", "ill_g_head");
375 if (!ufs_iallocp || !ufs_iupdatp || !ufs_itimes_nolockp || !ufs_igetp
376 || !udp_infop || !ill_g_headp)
377 afs_warn("AFS to UFS mapping cannot be fully initialised\n");
385 #ifdef AFS_SUN510_ENV
386 static struct vfsdef_v3 afs_vfsdef = {
393 static struct vfssw afs_vfw = {
401 static struct sysent afssysent = {
407 /* inter-module dependencies */
408 char _depends_on[] = "drv/ip drv/udp strmod/rpcmod";
411 * Info/Structs to link the afs module into the kernel
413 extern struct mod_ops mod_fsops;
414 extern struct mod_ops mod_syscallops;
416 static struct modlfs afsmodlfs = {
419 #ifdef AFS_SUN510_ENV
426 static struct modlsys afsmodlsys = {
428 "afs syscall interface",
432 /** The two structures afssysent32 and afsmodlsys32 are being added
433 * for supporting 32 bit syscalls. In Solaris 7 there are two system
434 * tables viz. sysent ans sysent32. 32 bit applications use sysent32.
435 * Since most of our user space binaries are going to be 32 bit
436 * we need to attach to sysent32 also. Note that the entry into AFS
437 * land still happens through Afs_syscall irrespective of whether we
438 * land here from sysent or sysent32
441 #if defined(AFS_SUN57_64BIT_ENV)
442 extern struct mod_ops mod_syscallops32;
444 static struct modlsys afsmodlsys32 = {
446 "afs syscall interface(32 bit)",
452 static struct modlinkage afs_modlinkage = {
455 #ifdef AFS_SUN57_64BIT_ENV
456 (void *)&afsmodlsys32,
462 /** This is the function that modload calls when loading the afs kernel
463 * extensions. The solaris modload program searches for the _init
464 * function in a module and calls it when modloading
469 char *sysn, *mod_getsysname();
471 extern char *sysbind;
472 extern struct bind *sb_hashtab[];
473 struct modctl *mp = 0;
478 if ((!(mp = mod_find_by_filename("fs", "ufs"))
479 && !(mp = mod_find_by_filename(NULL, "/kernel/fs/ufs"))
480 && !(mp = mod_find_by_filename(NULL, "sys/ufs"))) || (mp
485 ("ufs module must be loaded before loading afs; use modload /kernel/fs/ufs\n");
488 #ifndef AFS_NONFSTRANS
489 #if defined(AFS_SUN55_ENV)
490 if ((!(mp = mod_find_by_filename("misc", "nfssrv"))
491 && !(mp = mod_find_by_filename(NULL, NFSSRV))
492 && !(mp = mod_find_by_filename(NULL, NFSSRV_V9))) || (mp
497 ("misc/nfssrv module must be loaded before loading afs with nfs-xlator\n");
500 #else /* !AFS_SUN55_ENV */
501 #if defined(AFS_SUN52_ENV)
502 if ((!(mp = mod_find_by_filename("fs", "nfs"))
503 && !(mp = mod_find_by_filename(NULL, "/kernel/fs/nfs"))
504 && !(mp = mod_find_by_filename(NULL, "sys/nfs"))) || (mp
509 ("fs/nfs module must be loaded before loading afs with nfs-xlator\n");
512 #endif /* AFS_SUN52_ENV */
513 #endif /* AFS_SUN55_ENV */
514 #endif /* !AFS_NONFSTRANS */
515 #if !defined(AFS_SUN58_ENV)
517 * Re-read the /etc/name_to_sysnum file to make sure afs isn't added after
518 * reboot. Ideally we would like to call modctl_read_sysbinding_file() but
519 * unfortunately in Solaris 2.2 it became a local function so we have to do
520 * the read_binding_file() direct call with the appropriate text file and
521 * system call hashtable. make_syscallname actually copies "afs" to the
522 * proper slot entry and we also actually have to properly initialize the
523 * global sysent[AFS_SYSCALL] entry!
527 #define SYSBINDFILE "/etc/name_to_sysnum"
528 #endif /* SYSBINDFILE */
529 read_binding_file(SYSBINDFILE, sb_hashtab);
530 #else /* !AFS_SUN53_ENV */
531 read_binding_file(sysbind, sb_hashtab);
532 #endif /* AFS_SUN53_ENV */
533 make_syscallname("afs", AFS_SYSCALL);
535 if (sysent[AFS_SYSCALL].sy_call == nosys) {
536 if ((sysn = mod_getsysname(AFS_SYSCALL)) != NULL) {
537 sysent[AFS_SYSCALL].sy_lock =
538 (krwlock_t *) kobj_zalloc(sizeof(krwlock_t), KM_SLEEP);
539 rw_init(sysent[AFS_SYSCALL].sy_lock, "afs_syscall",
542 #else /* !AFS_SUN57_ENV */
543 RW_DEFAULT, DEFAULT_WT);
544 #endif /* AFS_SUN57_ENV */
547 #endif /* !AFS_SUN58_ENV */
549 osi_Init(); /* initialize global lock, etc */
551 code = mod_install(&afs_modlinkage);
556 struct modinfo *modp;
560 code = mod_info(&afs_modlinkage, modp);
572 sysent[SYS_setgroups].sy_callc = afs_orig_setgroups;
573 sysent[SYS_ioctl].sy_call = afs_orig_ioctl;
574 #if defined(AFS_SUN57_64BIT_ENV)
575 sysent32[SYS_setgroups].sy_callc = afs_orig_setgroups32;
576 sysent32[SYS_ioctl].sy_call = afs_orig_ioctl32;
579 code = mod_remove(&afs_modlinkage);