#include <afsconfig.h>
#include <afs/param.h>
-RCSID("$Header$");
#include <afs/sysincludes.h> /* Standard vendor system headers */
#include <afsincludes.h> /* Afs-based standard headers */
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/conf.h>
+#include <sys/module.h>
+#include <sys/sysproto.h>
#include <sys/syscall.h>
+#include <sys/sysent.h>
-struct vcache *afs_globalVp = 0;
-struct mount *afs_globalVFS = 0;
+struct vcache *afs_globalVp = NULL;
+struct mount *afs_globalVFS = NULL;
int afs_pbuf_freecnt = -1;
-int
-afs_quotactl()
-{
- return EOPNOTSUPP;
-}
+extern int Afs_xsetgroups();
+extern int afs_xioctl();
+
+#if !defined(AFS_FBSD90_ENV) && !defined(AFS_FBSD82_ENV)
+static sy_call_t *old_handler;
+#else
+static struct sysent old_sysent;
+
+static struct sysent afs_sysent = {
+ 5, /* int sy_narg */
+ (sy_call_t *) afs3_syscall, /* sy_call_t *sy_call */
+#ifdef AFS_FBSD60_ENV
+ AUE_NULL, /* au_event_t sy_auevent */
+#ifdef AFS_FBSD70_ENV
+ NULL, /* systrace_args_funt_t sy_systrace_args_func */
+ 0, /* u_int32_t sy_entry */
+ 0, /* u_int32_t sy_return */
+#ifdef AFS_FBSD90_ENV
+ 0, /* u_int32_t sy_flags */
+ 0 /* u_int32_t sy_thrcnt */
+#endif
+#endif
+#endif /* FBSD60 */
+};
+#endif /* FBSD90 */
int
-afs_fhtovp(mp, fhp, vpp)
- struct mount *mp;
- struct fid *fhp;
- struct vnode **vpp;
+afs_init(struct vfsconf *vfc)
{
-
- return (EINVAL);
+ int code;
+ int offset = AFS_SYSCALL;
+#if defined(AFS_FBSD90_ENV) || defined(AFS_FBSD82_ENV)
+ code = syscall_register(&offset, &afs_sysent, &old_sysent);
+ if (code) {
+ printf("AFS_SYSCALL in use, error %i. aborting\n", code);
+ return code;
+ }
+#else
+ if (sysent[AFS_SYSCALL].sy_call != nosys
+ && sysent[AFS_SYSCALL].sy_call != (sy_call_t *)lkmnosys) {
+ printf("AFS_SYSCALL in use. aborting\n");
+ return EBUSY;
+ }
+#endif
+ osi_Init();
+ afs_pbuf_freecnt = nswbuf / 2 + 1;
+#if !defined(AFS_FBSD90_ENV) && !defined(AFS_FBSD82_ENV)
+ old_handler = sysent[AFS_SYSCALL].sy_call;
+ sysent[AFS_SYSCALL].sy_call = afs3_syscall;
+ sysent[AFS_SYSCALL].sy_narg = 5;
+#endif
+ return 0;
}
int
-afs_vptofh(vp, fhp)
- struct vnode *vp;
- struct fid *fhp;
+afs_uninit(struct vfsconf *vfc)
{
+#if defined(AFS_FBSD90_ENV) || defined(AFS_FBSD82_ENV)
+ int offset = AFS_SYSCALL;
+#endif
- return (EINVAL);
+ if (afs_globalVFS)
+ return EBUSY;
+#if defined(AFS_FBSD90_ENV) || defined(AFS_FBSD82_ENV)
+ syscall_deregister(&offset, &old_sysent);
+#else
+ sysent[AFS_SYSCALL].sy_narg = 0;
+ sysent[AFS_SYSCALL].sy_call = old_handler;
+#endif
+ return 0;
}
int
-afs_start(mp, flags, p)
- struct mount *mp;
- int flags;
- struct proc *p;
+afs_start(struct mount *mp, int flags, struct thread *p)
{
- afs_pbuf_freecnt = nswbuf / 2 + 1;
return (0); /* nothing to do. ? */
}
int
-afs_mount(mp, path, data, ndp, p)
- register struct mount *mp;
- char *path;
- caddr_t data;
- struct nameidata *ndp;
- struct proc *p;
+#if defined(AFS_FBSD80_ENV)
+afs_omount(struct mount *mp, char *path, caddr_t data)
+#elif defined(AFS_FBSD53_ENV)
+afs_omount(struct mount *mp, char *path, caddr_t data, struct thread *p)
+#else
+afs_omount(struct mount *mp, char *path, caddr_t data, struct nameidata *ndp,
+ struct thread *p)
+#endif
{
/* ndp contains the mounted-from device. Just ignore it.
- * we also don't care about our proc struct. */
+ * we also don't care about our thread struct. */
size_t size;
if (mp->mnt_flag & MNT_UPDATE)
if (afs_globalVFS) { /* Don't allow remounts. */
AFS_GUNLOCK();
- return (EBUSY);
+ return EBUSY;
}
afs_globalVFS = mp;
mp->vfs_bsize = 8192;
vfs_getnewfsid(mp);
+ /*
+ * This is kind of ugly, as the interlock has grown to encompass
+ * more fields over time and there's not a good way to group the
+ * code without duplication.
+ */
+#ifdef AFS_FBSD62_ENV
+ MNT_ILOCK(mp);
+#endif
+ mp->mnt_flag &= ~MNT_LOCAL;
+#if defined(AFS_FBSD61_ENV) && !defined(AFS_FBSD62_ENV)
+ MNT_ILOCK(mp);
+#endif
+ mp->mnt_kern_flag |= MNTK_MPSAFE; /* solid steel */
+#ifndef AFS_FBSD61_ENV
+ MNT_ILOCK(mp);
+#endif
+ /*
+ * XXX mnt_stat "is considered stable as long as a ref is held".
+ * We should check that we hold the only ref.
+ */
mp->mnt_stat.f_iosize = 8192;
- (void)copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
+ if (path != NULL)
+ copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
+ else
+ bcopy("/afs", mp->mnt_stat.f_mntonname, size = 4);
memset(mp->mnt_stat.f_mntonname + size, 0, MNAMELEN - size);
memset(mp->mnt_stat.f_mntfromname, 0, MNAMELEN);
strcpy(mp->mnt_stat.f_mntfromname, "AFS");
/* null terminated string "AFS" will fit, just leave it be. */
strcpy(mp->mnt_stat.f_fstypename, "afs");
+ MNT_IUNLOCK(mp);
AFS_GUNLOCK();
- (void)afs_statfs(mp, &mp->mnt_stat, p);
+#ifdef AFS_FBSD80_ENV
+ afs_statfs(mp, &mp->mnt_stat);
+#else
+ afs_statfs(mp, &mp->mnt_stat, p);
+#endif
+
return 0;
}
+#ifdef AFS_FBSD53_ENV
+int
+#ifdef AFS_FBSD80_ENV
+afs_mount(struct mount *mp)
+#else
+afs_mount(struct mount *mp, struct thread *td)
+#endif
+{
+#ifdef AFS_FBSD80_ENV
+ return afs_omount(mp, NULL, NULL);
+#else
+ return afs_omount(mp, NULL, NULL, td);
+#endif
+}
+#endif
+
+#ifdef AFS_FBSD60_ENV
+static int
+#ifdef AFS_FBSD80_ENV
+afs_cmount(struct mntarg *ma, void *data, int flags)
+#else
+afs_cmount(struct mntarg *ma, void *data, int flags, struct thread *td)
+#endif
+{
+ return kernel_mount(ma, flags);
+}
+#endif
+
int
-afs_unmount(mp, flags, p)
- struct mount *mp;
- int flags;
- struct proc *p;
+#ifdef AFS_FBSD80_ENV
+afs_unmount(struct mount *mp, int flags)
+#else
+afs_unmount(struct mount *mp, int flags, struct thread *p)
+#endif
{
+ int error = 0;
AFS_GLOCK();
+ if (afs_globalVp &&
+ ((flags & MNT_FORCE) || !VREFCOUNT_GT(afs_globalVp, 1))) {
+ /* Put back afs_root's ref */
+ struct vcache *gvp = afs_globalVp;
+ afs_globalVp = NULL;
+ afs_PutVCache(gvp);
+ }
+ if (afs_globalVp)
+ error = EBUSY;
+ AFS_GUNLOCK();
+
+ /*
+ * Release any remaining vnodes on this mount point.
+ * The `1' means that we hold one extra reference on
+ * the root vnode (this is just a guess right now).
+ * This has to be done outside the global lock.
+ */
+ if (!error) {
+#if defined(AFS_FBSD80_ENV)
+ error = vflush(mp, 1, (flags & MNT_FORCE) ? FORCECLOSE : 0, curthread);
+#elif defined(AFS_FBSD53_ENV)
+ error = vflush(mp, 1, (flags & MNT_FORCE) ? FORCECLOSE : 0, p);
+#else
+ error = vflush(mp, 1, (flags & MNT_FORCE) ? FORCECLOSE : 0);
+#endif
+ }
+ if (error)
+ goto out;
+ AFS_GLOCK();
AFS_STATCNT(afs_unmount);
afs_globalVFS = 0;
afs_shutdown();
AFS_GUNLOCK();
- return 0;
+out:
+ return error;
}
int
+#if defined(AFS_FBSD80_ENV)
+afs_root(struct mount *mp, int flags, struct vnode **vpp)
+#elif defined(AFS_FBSD60_ENV)
+afs_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td)
+#elif defined(AFS_FBSD53_ENV)
+afs_root(struct mount *mp, struct vnode **vpp, struct thread *td)
+#else
afs_root(struct mount *mp, struct vnode **vpp)
+#endif
{
int error;
struct vrequest treq;
- register struct vcache *tvp = 0;
-#ifdef AFS_FBSD50_ENV
+ struct vcache *tvp = 0;
+ struct vcache *gvp;
+#if !defined(AFS_FBSD53_ENV) || defined(AFS_FBSD80_ENV)
struct thread *td = curthread;
- struct ucred cr = *td->td_ucred;
-#else
- struct proc *p = curproc;
- struct ucred cr = *p->p_cred->pc_ucred;
#endif
+ struct ucred *cr = osi_curcred();
AFS_GLOCK();
AFS_STATCNT(afs_root);
- if (afs_globalVp && (afs_globalVp->states & CStatd)) {
+ crhold(cr);
+tryagain:
+ if (afs_globalVp && (afs_globalVp->f.states & CStatd)) {
tvp = afs_globalVp;
error = 0;
} else {
- if (afs_globalVp) {
- afs_PutVCache(afs_globalVp);
- afs_globalVp = NULL;
- }
-
- if (!(error = afs_InitReq(&treq, &cr)) && !(error = afs_CheckInit())) {
+ if (!(error = afs_InitReq(&treq, cr)) && !(error = afs_CheckInit())) {
tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
/* we really want this to stay around */
- if (tvp)
+ if (tvp) {
+ gvp = afs_globalVp;
afs_globalVp = tvp;
- else
+ if (gvp) {
+ afs_PutVCache(gvp);
+ if (tvp != afs_globalVp) {
+ /* someone raced us and won */
+ afs_PutVCache(tvp);
+ goto tryagain;
+ }
+ }
+ } else
error = ENOENT;
}
}
if (tvp) {
- osi_vnhold(tvp, 0);
+ struct vnode *vp = AFSTOV(tvp);
+
+ ASSERT_VI_UNLOCKED(vp, "afs_root");
AFS_GUNLOCK();
-#ifdef AFS_FBSD50_ENV
- vn_lock(AFSTOV(tvp), LK_EXCLUSIVE | LK_RETRY, td);
-#else
- vn_lock(AFSTOV(tvp), LK_EXCLUSIVE | LK_RETRY, p);
-#endif
+ error = vget(vp, LK_EXCLUSIVE | LK_RETRY, td);
AFS_GLOCK();
+ /* we dropped the glock, so re-check everything it had serialized */
+ if (!afs_globalVp || !(afs_globalVp->f.states & CStatd) ||
+ tvp != afs_globalVp) {
+ vput(vp);
+ afs_PutVCache(tvp);
+ goto tryagain;
+ }
+ if (error != 0)
+ goto tryagain;
+ /*
+ * I'm uncomfortable about this. Shouldn't this happen at a
+ * higher level, and shouldn't we busy the top-level directory
+ * to prevent recycling?
+ */
+ vp->v_vflag |= VV_ROOT;
+
afs_globalVFS = mp;
- *vpp = AFSTOV(tvp);
- tvp->v.v_flag |= VROOT;
+ *vpp = vp;
}
- afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *vpp,
+ afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, tvp ? AFSTOV(tvp) : NULL,
ICL_TYPE_INT32, error);
AFS_GUNLOCK();
+ crfree(cr);
return error;
}
int
-afs_vget(mp, lfl, vp)
- struct mount *mp;
- struct vnode *vp;
- int lfl;
-{
-#ifdef AFS_FBSD50_ENV
- return EOPNOTSUPP;
+#ifdef AFS_FBSD80_ENV
+afs_statfs(struct mount *mp, struct statfs *abp)
#else
- int error;
-
- printf("vget called. help!\n");
- if (vp->v_usecount < 0) {
- vprint("bad usecount", vp);
- panic("afs_vget");
- }
- error = vget(vp, lfl, curthread);
- error = vget(vp, lfl, curproc);
- if (!error)
- insmntque(vp, afs_globalVFS); /* take off free list */
- return error;
+afs_statfs(struct mount *mp, struct statfs *abp, struct thread *p)
#endif
-}
-
-int
-afs_statfs(struct mount *mp, struct statfs *abp, struct proc *p)
{
AFS_GLOCK();
AFS_STATCNT(afs_statfs);
-#if 0
- abp->f_type = MOUNT_AFS;
-#endif
abp->f_bsize = mp->vfs_bsize;
abp->f_iosize = mp->vfs_bsize;
}
int
-afs_sync(mp, waitfor, cred, p)
- struct mount *mp;
- int waitfor;
- struct ucred *cred;
- struct prioc *p;
-{
- return 0;
-}
-
-int
-afs_sysctl()
-{
- return EOPNOTSUPP;
-}
-
-
-int
-afs_init(struct vfsconf *vfc)
+#if defined(AFS_FBSD80_ENV)
+afs_sync(struct mount *mp, int waitfor)
+#elif defined(AFS_FBSD60_ENV)
+afs_sync(struct mount *mp, int waitfor, struct thread *td)
+#else
+afs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct thread *p)
+#endif
{
return 0;
}
+#ifdef AFS_FBSD60_ENV
+struct vfsops afs_vfsops = {
+ .vfs_init = afs_init,
+ .vfs_mount = afs_mount,
+ .vfs_cmount = afs_cmount,
+ .vfs_root = afs_root,
+ .vfs_statfs = afs_statfs,
+ .vfs_sync = afs_sync,
+ .vfs_uninit = afs_uninit,
+ .vfs_unmount = afs_unmount,
+ .vfs_sysctl = vfs_stdsysctl,
+};
+#else
struct vfsops afs_vfsops = {
+#ifdef AFS_FBSD53_ENV
afs_mount,
+#endif
+ afs_omount,
afs_start,
afs_unmount,
afs_root,
- afs_quotactl,
+ vfs_stdquotactl,
afs_statfs,
afs_sync,
- afs_vget,
- afs_fhtovp,
-#ifdef AFS_FBSD50_ENV
+ vfs_stdvget,
+ vfs_stdfhtovp,
vfs_stdcheckexp,
-#endif
- afs_vptofh,
+ vfs_stdvptofh,
afs_init,
-#ifdef AFS_FBSD50_ENV
- vfs_stduninit,
-#endif
- afs_sysctl
+ afs_uninit,
+ vfs_stdextattrctl,
+ vfs_stdsysctl,
};
+#endif
git://git.openafs.org / openafs.git / blobdiff