diff options
Diffstat (limited to 'sys/fs/nfs/nfs_commonport.c')
| -rw-r--r-- | sys/fs/nfs/nfs_commonport.c | 486 |
1 files changed, 486 insertions, 0 deletions
diff --git a/sys/fs/nfs/nfs_commonport.c b/sys/fs/nfs/nfs_commonport.c new file mode 100644 index 0000000..1c22657 --- /dev/null +++ b/sys/fs/nfs/nfs_commonport.c @@ -0,0 +1,486 @@ +/*- + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Rick Macklem at The University of Guelph. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Functions that need to be different for different versions of BSD + * kernel should be kept here, along with any global storage specific + * to this BSD variant. + */ +#include <fs/nfs/nfsport.h> +#include <sys/sysctl.h> +#include <vm/vm.h> +#include <vm/vm_object.h> +#include <vm/vm_page.h> +#include <vm/vm_param.h> +#include <vm/vm_map.h> +#include <vm/vm_kern.h> +#include <vm/vm_extern.h> +#include <vm/uma.h> +#include <vm/uma_int.h> + +extern int nfscl_ticks; +extern int nfsrv_nfsuserd; +extern struct nfssockreq nfsrv_nfsuserdsock; +extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, + struct thread *); +extern int nfsrv_useacl; +struct mount nfsv4root_mnt; +int newnfs_numnfsd = 0; +struct nfsstats newnfsstats; +int nfs_numnfscbd = 0; +char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; +struct callout newnfsd_callout; +void (*nfsd_call_servertimer)(void) = NULL; +void (*ncl_call_invalcaches)(struct vnode *) = NULL; + +static int nfs_realign_test; +static int nfs_realign_count; + +SYSCTL_NODE(_vfs, OID_AUTO, newnfs, CTLFLAG_RW, 0, "New NFS filesystem"); +SYSCTL_INT(_vfs_newnfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 0, ""); +SYSCTL_INT(_vfs_newnfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 0, ""); +SYSCTL_INT(_vfs_newnfs, OID_AUTO, nfs4acl_enable, CTLFLAG_RW, &nfsrv_useacl, 0, ""); +SYSCTL_STRING(_vfs_newnfs, OID_AUTO, callback_addr, CTLFLAG_RW, + nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), ""); + +/* + * Defines for malloc + * (Here for FreeBSD, since they allocate storage.) + */ +MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache"); +MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id"); +MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state", "NFSD V4 State (Openowner, Open, Lockowner, Delegation"); +MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock"); +MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file"); +MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string"); +MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map"); +MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header"); +MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle"); +MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner"); +MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open"); +MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation"); +MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client"); +MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner"); +MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock"); +MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode"); +MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer"); +MALLOC_DEFINE(M_NEWNFSDIROFF, "Newnfscl_diroff", "New NFS directory offset data"); + +/* + * Definition of mutex locks. + * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list + * and assorted other nfsd structures. + * Giant is used to protect the nfsd list and count, which is just + * updated when nfsd's start/stop and is grabbed for nfsrvd_dorpc() + * for the VFS ops. + */ +struct mtx newnfsd_mtx; +struct mtx nfs_sockl_mutex; +struct mtx nfs_state_mutex; +struct mtx nfs_nameid_mutex; +struct mtx nfs_req_mutex; +struct mtx nfs_slock_mutex; + +/* local functions */ +static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); + +#if defined(__i386__) +/* + * These architectures don't need re-alignment, so just return. + */ +void +newnfs_realign(struct mbuf **pm) +{ + + return; +} +#else +/* + * nfs_realign: + * + * Check for badly aligned mbuf data and realign by copying the unaligned + * portion of the data into a new mbuf chain and freeing the portions + * of the old chain that were replaced. + * + * We cannot simply realign the data within the existing mbuf chain + * because the underlying buffers may contain other rpc commands and + * we cannot afford to overwrite them. + * + * We would prefer to avoid this situation entirely. The situation does + * not occur with NFS/UDP and is supposed to only occassionally occur + * with TCP. Use vfs.nfs.realign_count and realign_test to check this. + */ +void +newnfs_realign(struct mbuf **pm) +{ + struct mbuf *m; + struct mbuf *n = NULL; + int off = 0; + + ++nfs_realign_test; + while ((m = *pm) != NULL) { + if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { + MGET(n, M_WAIT, MT_DATA); + if (m->m_len >= MINCLSIZE) { + MCLGET(n, M_WAIT); + } + n->m_len = 0; + break; + } + pm = &m->m_next; + } + + /* + * If n is non-NULL, loop on m copying data, then replace the + * portion of the chain that had to be realigned. + */ + if (n != NULL) { + ++nfs_realign_count; + while (m) { + m_copyback(n, off, m->m_len, mtod(m, caddr_t)); + off += m->m_len; + m = m->m_next; + } + m_freem(*pm); + *pm = n; + } +} +#endif /* newnfs_realign */ + +#ifdef notdef +static void +nfsrv_object_create(struct vnode *vp, struct thread *td) +{ + + if (vp == NULL || vp->v_type != VREG) + return; + (void) vfs_object_create(vp, td, td->td_ucred); +} +#endif + +/* + * Look up a file name. Basically just initialize stuff and call namei(). + */ +int +nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) +{ + int error; + + NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, p); + error = namei(ndp); + if (!error) { + NDFREE(ndp, NDF_ONLY_PNBUF); + } + return (error); +} + +/* + * Copy NFS uid, gids to the cred structure. + */ +void +newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) +{ + int ngroups, i; + + cr->cr_uid = nfscr->nfsc_uid; + ngroups = (nfscr->nfsc_ngroups < NGROUPS) ? + nfscr->nfsc_ngroups : NGROUPS; + for (i = 0; i < ngroups; i++) + cr->cr_groups[i] = nfscr->nfsc_groups[i]; + cr->cr_ngroups = ngroups; +} + +/* + * Map args from nfsmsleep() to msleep(). + */ +int +nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, + struct timespec *ts) +{ + u_int64_t nsecval; + int error, timeo; + + if (ts) { + timeo = hz * ts->tv_sec; + nsecval = (u_int64_t)ts->tv_nsec; + nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / + 1000000000; + timeo += (int)nsecval; + } else { + timeo = 0; + } + error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); + return (error); +} + +/* + * Get the file system info for the server. For now, just assume FFS. + */ +void +nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) +{ + int pref; + + /* + * XXX + * There should be file system VFS OP(s) to get this information. + * For now, assume ufs. + */ + if (isdgram) + pref = NFS_MAXDGRAMDATA; + else + pref = NFS_MAXDATA; + sip->fs_rtmax = NFS_MAXDATA; + sip->fs_rtpref = pref; + sip->fs_rtmult = NFS_FABLKSIZE; + sip->fs_wtmax = NFS_MAXDATA; + sip->fs_wtpref = pref; + sip->fs_wtmult = NFS_FABLKSIZE; + sip->fs_dtpref = pref; + sip->fs_maxfilesize = 0xffffffffffffffffull; + sip->fs_timedelta.tv_sec = 0; + sip->fs_timedelta.tv_nsec = 1; + sip->fs_properties = (NFSV3FSINFO_LINK | + NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | + NFSV3FSINFO_CANSETTIME); +} + +/* Fake nfsrv_atroot. Just return 0 */ +int +nfsrv_atroot(struct vnode *vp, long *retp) +{ + + return (0); +} + +/* + * Set the credentials to refer to root. + * If only the various BSDen could agree on whether cr_gid is a separate + * field or cr_groups[0]... + */ +void +newnfs_setroot(struct ucred *cred) +{ + + cred->cr_uid = 0; + cred->cr_groups[0] = 0; + cred->cr_ngroups = 1; +} + +/* + * Get the client credential. Used for Renew and recovery. + */ +struct ucred * +newnfs_getcred(void) +{ + struct ucred *cred; + struct thread *td = curthread; + + cred = crdup(td->td_ucred); + newnfs_setroot(cred); + return (cred); +} + +/* + * Nfs timer routine + * Call the nfsd's timer function once/sec. + */ +void +newnfs_timer(void *arg) +{ + static time_t lasttime = 0; + /* + * Call the server timer, if set up. + * The argument indicates if it is the next second and therefore + * leases should be checked. + */ + if (lasttime != NFSD_MONOSEC) { + lasttime = NFSD_MONOSEC; + if (nfsd_call_servertimer != NULL) + (*nfsd_call_servertimer)(); + } + callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); +} + + +/* + * sleep for a short period of time. + * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on + * an event that never gets a wakeup. Only return EINTR or 0. + */ +int +nfs_catnap(int prio, const char *wmesg) +{ + static int non_event; + int ret; + + ret = tsleep(&non_event, prio, wmesg, 1); + if (ret != EINTR) + ret = 0; + return (ret); +} + +/* + * Get referral. For now, just fail. + */ +struct nfsreferral * +nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) +{ + + return (NULL); +} + +static int +nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) +{ + int error; + + error = nfssvc_call(td, uap, td->td_ucred); + return (error); +} + +static int +nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) +{ + int error = EINVAL; + struct nfsd_idargs nid; + + if (uap->flag & NFSSVC_IDNAME) { + error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid)); + if (error) + return (error); + error = nfssvc_idname(&nid); + return (error); + } else if (uap->flag & NFSSVC_GETSTATS) { + error = copyout(&newnfsstats, + CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats)); + return (error); + } else if (uap->flag & NFSSVC_NFSUSERDPORT) { + u_short sockport; + + error = copyin(uap->argp, (caddr_t)&sockport, + sizeof (u_short)); + if (!error) + error = nfsrv_nfsuserdport(sockport, p); + } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { + nfsrv_nfsuserddelport(); + error = 0; + } + return (error); +} + +/* + * called by all three modevent routines, so that it gets things + * initialized soon enough. + */ +void +newnfs_portinit(void) +{ + static int inited = 0; + + if (inited) + return; + inited = 1; + /* Initialize SMP locks used by both client and server. */ + mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); + mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); +} + +extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); + +/* + * Called once to initialize data structures... + */ +static int +nfscommon_modevent(module_t mod, int type, void *data) +{ + int error = 0; + static int loaded = 0; + + switch (type) { + case MOD_LOAD: + if (loaded) + return (0); + newnfs_portinit(); + mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); + mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); + mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); + mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); + mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, + MTX_DEF); + callout_init(&newnfsd_callout, CALLOUT_MPSAFE); + newnfs_init(); + nfsd_call_nfscommon = nfssvc_nfscommon; + loaded = 1; + break; + + case MOD_UNLOAD: + if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || + nfs_numnfscbd != 0) { + error = EBUSY; + break; + } + + nfsd_call_nfscommon = NULL; + callout_drain(&newnfsd_callout); + /* and get rid of the mutexes */ + mtx_destroy(&nfs_nameid_mutex); + mtx_destroy(&newnfsd_mtx); + mtx_destroy(&nfs_state_mutex); + mtx_destroy(&nfs_sockl_mutex); + mtx_destroy(&nfs_slock_mutex); + mtx_destroy(&nfs_req_mutex); + mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); + loaded = 0; + break; + default: + error = EOPNOTSUPP; + break; + } + return error; +} +static moduledata_t nfscommon_mod = { + "nfscommon", + nfscommon_modevent, + NULL, +}; +DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); + +/* So that loader and kldload(2) can find us, wherever we are.. */ +MODULE_VERSION(nfscommon, 1); +MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); +MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); + |
