+ while (*p) {
+ if (IS_XDIGIT(*p)) {
+ dcount++;
+ if (!IS_DIGIT(*p))
+ xdcount++;
+ needmore = 0;
+ p++;
+ } else if (*p == '.') {
+ /* rest is decimal IPv4 dotted quad and/or port */
+ if (!dots) {
+ /* this is the first, so count them */
+ for (pd = p; *pd; pd++) {
+ if (*pd == '.') {
+ if (++dots > 5)
+ return (0);
+ } else if (hex && (*pd == '%')) {
+ break;
+ } else if ((*pd < '0') || (*pd > '9')) {
+ return (0);
+ }
+ }
+ if ((dots != 2) && (dots != 3) && (dots != 5))
+ return (0);
+ if (hex && (dots == 2)) { /* hex+port */
+ if (!dcount && needmore)
+ return (0);
+ if (dcount) /* last hex may be elided zero */
+ GET(HEXVALUE);
+ } else {
+ GET(DECIMALVALUE);
+ }
+ } else {
+ GET(DECIMALVALUE);
+ }
+ dcount = xdcount = 0;
+ needmore = 1;
+ pnum = ++p;
+ } else if (*p == ':') {
+ hex = 1;
+ if (dots)
+ return (0);
+ if (!dcount) { /* missing number, probably double colon */
+ if (dci >= 0) /* can only have one double colon */
+ return (0);
+ dci = i;
+ needmore = 0;
+ } else {
+ GET(HEXVALUE);
+ dcount = xdcount = 0;
+ needmore = 1;
+ }
+ pnum = ++p;
+ } else if (*p == '%') { /* scope ID delimiter */
+ if (!hex)
+ return (0);
+ p++;
+ pscope = p;
+ break;
+ } else { /* unexpected character */
+ return (0);
+ }
+ }
+ if (needmore && !dcount)
+ return (0);
+ if (dcount) /* decode trailing number */
+ GET(dots ? DECIMALVALUE : HEXVALUE);
+ if (dci >= 0) { /* got a double-colon at i, need to insert a range of zeroes */
+ /* if we got a port, slide to end of array */
+ /* otherwise, slide to end of address (non-port) values */
+ int end = ((dots == 2) || (dots == 5)) ? sizeof(a) : (sizeof(a) - 2);
+ if (i % 2) /* length of zero range must be multiple of 2 */
+ return (0);
+ if (i >= end) /* no room? */
+ return (0);
+ /* slide (i-dci) numbers up from index dci */
+ for (s=0; s < (i - dci); s++)
+ a[end-1-s] = a[i-1-s];
+ /* zero (end-i) numbers at index dci */
+ for (s=0; s < (end - i); s++)
+ a[dci+s] = 0;
+ i = end;
+ }
+
+ /* copy out resulting socket address */
+ if (hex) {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)addr;
+ if ((((dots == 0) || (dots == 3)) && (i != (sizeof(a)-2))))
+ return (0);
+ if ((((dots == 2) || (dots == 5)) && (i != sizeof(a))))
+ return (0);
+ bzero(sin6, sizeof(struct sockaddr_in6));
+ sin6->sin6_len = sizeof(struct sockaddr_in6);
+ sin6->sin6_family = AF_INET6;
+ bcopy(a, &sin6->sin6_addr.s6_addr, sizeof(struct in6_addr));
+ if ((dots == 5) || (dots == 2))
+ sin6->sin6_port = htons((a[16] << 8) | a[17]);
+ if (pscope) {
+ for (p=pscope; IS_DIGIT(*p); p++)
+ ;
+ if (*p && !IS_DIGIT(*p)) { /* name */
+ ifnet_t interface = NULL;
+ if (ifnet_find_by_name(pscope, &interface) == 0)
+ sin6->sin6_scope_id = ifnet_index(interface);
+ if (interface)
+ ifnet_release(interface);
+ } else { /* decimal number */
+ sin6->sin6_scope_id = strtoul(pscope, NULL, 10);
+ }
+ /* XXX should we also embed scope id for linklocal? */
+ }
+ } else {
+ struct sockaddr_in *sin = (struct sockaddr_in*)addr;
+ if ((dots != 3) && (dots != 5))
+ return (0);
+ if ((dots == 3) && (i != 4))
+ return (0);
+ if ((dots == 5) && (i != 6))
+ return (0);
+ bzero(sin, sizeof(struct sockaddr_in));
+ sin->sin_len = sizeof(struct sockaddr_in);
+ sin->sin_family = AF_INET;
+ bcopy(a, &sin->sin_addr.s_addr, sizeof(struct in_addr));
+ if (dots == 5)
+ sin->sin_port = htons((a[4] << 8) | a[5]);
+ }
+ return (1);
+}
+
+
+/* NFS Client debugging support */
+uint32_t nfs_debug_ctl;
+
+#include <libkern/libkern.h>
+#include <stdarg.h>
+
+void
+nfs_printf(int facility, int level, const char *fmt, ...)
+{
+ va_list ap;
+
+ if ((uint32_t)level > NFS_DEBUG_LEVEL)
+ return;
+ if (NFS_DEBUG_FACILITY && !((uint32_t)facility & NFS_DEBUG_FACILITY))
+ return;
+
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+}
+
+/* Is a mount gone away? */
+int
+nfs_mount_gone(struct nfsmount *nmp)
+{
+ return (!nmp || vfs_isforce(nmp->nm_mountp) || (nmp->nm_state & (NFSSTA_FORCE | NFSSTA_DEAD)));
+}
+
+/*
+ * Return some of the more significant mount options
+ * as a string, e.g. "'ro,hard,intr,tcp,vers=3,sec=krb5,deadtimeout=0'
+ */
+int
+nfs_mountopts(struct nfsmount *nmp, char *buf, int buflen)
+{
+ int c;
+
+ c = snprintf(buf, buflen, "%s,%s,%s,%s,vers=%d,sec=%s,%sdeadtimeout=%d",
+ (vfs_flags(nmp->nm_mountp) & MNT_RDONLY) ? "ro" : "rw",
+ NMFLAG(nmp, SOFT) ? "soft" : "hard",
+ NMFLAG(nmp, INTR) ? "intr" : "nointr",
+ nmp->nm_sotype == SOCK_STREAM ? "tcp" : "udp",
+ nmp->nm_vers,
+ nmp->nm_auth == RPCAUTH_KRB5 ? "krb5" :
+ nmp->nm_auth == RPCAUTH_KRB5I ? "krb5i" :
+ nmp->nm_auth == RPCAUTH_KRB5P ? "krb5p" :
+ nmp->nm_auth == RPCAUTH_SYS ? "sys" : "none",
+ nmp->nm_lockmode == NFS_LOCK_MODE_ENABLED ? "locks," :
+ nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED ? "nolocks," :
+ nmp->nm_lockmode == NFS_LOCK_MODE_LOCAL ? "locallocks," : "",
+ nmp->nm_deadtimeout);
+
+ return (c > buflen ? ENOMEM : 0);
+}
+
+#endif /* NFSCLIENT */
+
+/*
+ * Schedule a callout thread to run an NFS timer function
+ * interval milliseconds in the future.
+ */
+void
+nfs_interval_timer_start(thread_call_t call, int interval)
+{
+ uint64_t deadline;
+
+ clock_interval_to_deadline(interval, 1000 * 1000, &deadline);
+ thread_call_enter_delayed(call, deadline);
+}
+
+
+#if NFSSERVER
+
+int nfsrv_cmp_secflavs(struct nfs_sec *, struct nfs_sec *);
+int nfsrv_hang_addrlist(struct nfs_export *, struct user_nfs_export_args *);
+int nfsrv_free_netopt(struct radix_node *, void *);
+int nfsrv_free_addrlist(struct nfs_export *, struct user_nfs_export_args *);
+struct nfs_export_options *nfsrv_export_lookup(struct nfs_export *, mbuf_t);
+struct nfs_export *nfsrv_fhtoexport(struct nfs_filehandle *);
+struct nfs_user_stat_node *nfsrv_get_user_stat_node(struct nfs_active_user_list *, struct sockaddr *, uid_t);
+void nfsrv_init_user_list(struct nfs_active_user_list *);
+void nfsrv_free_user_list(struct nfs_active_user_list *);
+
+/*
+ * add NFSv3 WCC data to an mbuf chain
+ */
+int
+nfsm_chain_add_wcc_data_f(
+ struct nfsrv_descript *nd,
+ struct nfsm_chain *nmc,
+ int preattrerr,
+ struct vnode_attr *prevap,
+ int postattrerr,
+ struct vnode_attr *postvap)
+{
+ int error = 0;
+
+ if (preattrerr) {
+ nfsm_chain_add_32(error, nmc, FALSE);
+ } else {
+ nfsm_chain_add_32(error, nmc, TRUE);
+ nfsm_chain_add_64(error, nmc, prevap->va_data_size);
+ nfsm_chain_add_time(error, nmc, NFS_VER3, &prevap->va_modify_time);
+ nfsm_chain_add_time(error, nmc, NFS_VER3, &prevap->va_change_time);
+ }
+ nfsm_chain_add_postop_attr(error, nd, nmc, postattrerr, postvap);
+
+ return (error);
+}
+
+/*
+ * Extract a lookup path from the given mbufs and store it in
+ * a newly allocated buffer saved in the given nameidata structure.
+ */
+int
+nfsm_chain_get_path_namei(
+ struct nfsm_chain *nmc,
+ uint32_t len,
+ struct nameidata *nip)
+{
+ struct componentname *cnp = &nip->ni_cnd;
+ int error = 0;
+ char *cp;
+
+ if (len > (MAXPATHLEN - 1))
+ return (ENAMETOOLONG);
+
+ /*
+ * Get a buffer for the name to be translated, and copy the
+ * name into the buffer.
+ */
+ MALLOC_ZONE(cnp->cn_pnbuf, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK);
+ if (!cnp->cn_pnbuf)
+ return (ENOMEM);
+ cnp->cn_pnlen = MAXPATHLEN;
+ cnp->cn_flags |= HASBUF;
+
+ /* Copy the name from the mbuf list to the string */
+ cp = cnp->cn_pnbuf;
+ nfsm_chain_get_opaque(error, nmc, len, cp);
+ if (error)
+ goto out;
+ cnp->cn_pnbuf[len] = '\0';
+
+ /* sanity check the string */
+ if ((strlen(cp) != len) || strchr(cp, '/'))
+ error = EACCES;
+out:
+ if (error) {
+ if (cnp->cn_pnbuf)
+ FREE_ZONE(cnp->cn_pnbuf, MAXPATHLEN, M_NAMEI);
+ cnp->cn_flags &= ~HASBUF;
+ } else {
+ nip->ni_pathlen = len;
+ }
+ return (error);
+}
+
+/*
+ * Set up nameidata for a lookup() call and do it.
+ */
+int
+nfsrv_namei(
+ struct nfsrv_descript *nd,
+ vfs_context_t ctx,
+ struct nameidata *nip,
+ struct nfs_filehandle *nfhp,
+ vnode_t *retdirp,
+ struct nfs_export **nxp,
+ struct nfs_export_options **nxop)
+{
+ vnode_t dp;
+ int error;
+ struct componentname *cnp = &nip->ni_cnd;
+ uint32_t cnflags;
+ char *tmppn;
+
+ *retdirp = NULL;
+
+ /*
+ * Extract and set starting directory.
+ */
+ error = nfsrv_fhtovp(nfhp, nd, &dp, nxp, nxop);
+ if (error)
+ goto out;
+ error = nfsrv_credcheck(nd, ctx, *nxp, *nxop);
+ if (error || (vnode_vtype(dp) != VDIR)) {
+ vnode_put(dp);
+ error = ENOTDIR;
+ goto out;
+ }
+ *retdirp = dp;
+
+ nip->ni_cnd.cn_context = ctx;
+
+ if (*nxop && ((*nxop)->nxo_flags & NX_READONLY))
+ cnp->cn_flags |= RDONLY;
+
+ cnp->cn_flags |= NOCROSSMOUNT;
+ cnp->cn_nameptr = cnp->cn_pnbuf;
+ nip->ni_usedvp = nip->ni_startdir = dp;
+
+ /*
+ * And call lookup() to do the real work
+ */
+ cnflags = nip->ni_cnd.cn_flags; /* store in case we have to restore */
+ while ((error = lookup(nip)) == ERECYCLE) {
+ nip->ni_cnd.cn_flags = cnflags;
+ cnp->cn_nameptr = cnp->cn_pnbuf;
+ nip->ni_usedvp = nip->ni_dvp = nip->ni_startdir = dp;
+ }
+ if (error)
+ goto out;
+
+ /* Check for encountering a symbolic link */
+ if (cnp->cn_flags & ISSYMLINK) {
+ if (cnp->cn_flags & (LOCKPARENT | WANTPARENT))
+ vnode_put(nip->ni_dvp);
+ if (nip->ni_vp) {
+ vnode_put(nip->ni_vp);
+ nip->ni_vp = NULL;
+ }
+ error = EINVAL;
+ }
+out:
+ if (error) {
+ tmppn = cnp->cn_pnbuf;
+ cnp->cn_pnbuf = NULL;
+ cnp->cn_flags &= ~HASBUF;
+ FREE_ZONE(tmppn, cnp->cn_pnlen, M_NAMEI);
+ }
+ return (error);
+}
+
+/*
+ * A fiddled version of m_adj() that ensures null fill to a 4-byte
+ * boundary and only trims off the back end
+ */
+void
+nfsm_adj(mbuf_t mp, int len, int nul)
+{
+ mbuf_t m, mnext;
+ int count, i, mlen;
+ char *cp;
+
+ /*
+ * Trim from tail. Scan the mbuf chain,
+ * calculating its length and finding the last mbuf.
+ * If the adjustment only affects this mbuf, then just
+ * adjust and return. Otherwise, rescan and truncate
+ * after the remaining size.
+ */
+ count = 0;
+ m = mp;
+ for (;;) {
+ mlen = mbuf_len(m);
+ count += mlen;
+ mnext = mbuf_next(m);
+ if (mnext == NULL)
+ break;
+ m = mnext;
+ }
+ if (mlen > len) {
+ mlen -= len;
+ mbuf_setlen(m, mlen);
+ if (nul > 0) {
+ cp = (caddr_t)mbuf_data(m) + mlen - nul;
+ for (i = 0; i < nul; i++)
+ *cp++ = '\0';
+ }
+ return;
+ }
+ count -= len;
+ if (count < 0)
+ count = 0;
+ /*
+ * Correct length for chain is "count".
+ * Find the mbuf with last data, adjust its length,
+ * and toss data from remaining mbufs on chain.
+ */
+ for (m = mp; m; m = mbuf_next(m)) {
+ mlen = mbuf_len(m);
+ if (mlen >= count) {
+ mlen = count;
+ mbuf_setlen(m, count);
+ if (nul > 0) {
+ cp = (caddr_t)mbuf_data(m) + mlen - nul;
+ for (i = 0; i < nul; i++)
+ *cp++ = '\0';
+ }
+ break;
+ }
+ count -= mlen;
+ }
+ for (m = mbuf_next(m); m; m = mbuf_next(m))
+ mbuf_setlen(m, 0);
+}
+
+/*
+ * Trim the header out of the mbuf list and trim off any trailing
+ * junk so that the mbuf list has only the write data.
+ */
+int
+nfsm_chain_trim_data(struct nfsm_chain *nmc, int len, int *mlen)
+{
+ int cnt = 0, dlen, adjust;
+ caddr_t data;
+ mbuf_t m;
+
+ if (mlen)
+ *mlen = 0;
+
+ /* trim header */
+ for (m = nmc->nmc_mhead; m && (m != nmc->nmc_mcur); m = mbuf_next(m))
+ mbuf_setlen(m, 0);
+ if (!m)
+ return (EIO);
+
+ /* trim current mbuf */
+ data = mbuf_data(m);
+ dlen = mbuf_len(m);
+ adjust = nmc->nmc_ptr - data;
+ dlen -= adjust;
+ if ((dlen > 0) && (adjust > 0)) {
+ if (mbuf_setdata(m, nmc->nmc_ptr, dlen))
+ return(EIO);
+ } else
+ mbuf_setlen(m, dlen);
+
+ /* skip next len bytes */
+ for (; m && (cnt < len); m = mbuf_next(m)) {
+ dlen = mbuf_len(m);
+ cnt += dlen;
+ if (cnt > len) {
+ /* truncate to end of data */
+ mbuf_setlen(m, dlen - (cnt - len));
+ if (m == nmc->nmc_mcur)
+ nmc->nmc_left -= (cnt - len);
+ cnt = len;
+ }
+ }
+ if (mlen)
+ *mlen = cnt;
+
+ /* trim any trailing data */
+ if (m == nmc->nmc_mcur)
+ nmc->nmc_left = 0;
+ for (; m; m = mbuf_next(m))
+ mbuf_setlen(m, 0);
+
+ return (0);
+}
+
+int
+nfsm_chain_add_fattr(
+ struct nfsrv_descript *nd,
+ struct nfsm_chain *nmc,
+ struct vnode_attr *vap)
+{
+ int error = 0;
+
+ // XXX Should we assert here that all fields are supported?
+
+ nfsm_chain_add_32(error, nmc, vtonfs_type(vap->va_type, nd->nd_vers));
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_32(error, nmc, vap->va_mode & 07777);
+ } else {
+ nfsm_chain_add_32(error, nmc, vtonfsv2_mode(vap->va_type, vap->va_mode));
+ }
+ nfsm_chain_add_32(error, nmc, vap->va_nlink);
+ nfsm_chain_add_32(error, nmc, vap->va_uid);
+ nfsm_chain_add_32(error, nmc, vap->va_gid);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_64(error, nmc, vap->va_data_size);
+ nfsm_chain_add_64(error, nmc, vap->va_data_alloc);
+ nfsm_chain_add_32(error, nmc, major(vap->va_rdev));
+ nfsm_chain_add_32(error, nmc, minor(vap->va_rdev));
+ nfsm_chain_add_64(error, nmc, vap->va_fsid);
+ nfsm_chain_add_64(error, nmc, vap->va_fileid);
+ } else {
+ nfsm_chain_add_32(error, nmc, vap->va_data_size);
+ nfsm_chain_add_32(error, nmc, NFS_FABLKSIZE);
+ if (vap->va_type == VFIFO)
+ nfsm_chain_add_32(error, nmc, 0xffffffff);
+ else
+ nfsm_chain_add_32(error, nmc, vap->va_rdev);
+ nfsm_chain_add_32(error, nmc, vap->va_data_alloc / NFS_FABLKSIZE);
+ nfsm_chain_add_32(error, nmc, vap->va_fsid);
+ nfsm_chain_add_32(error, nmc, vap->va_fileid);
+ }
+ nfsm_chain_add_time(error, nmc, nd->nd_vers, &vap->va_access_time);
+ nfsm_chain_add_time(error, nmc, nd->nd_vers, &vap->va_modify_time);
+ nfsm_chain_add_time(error, nmc, nd->nd_vers, &vap->va_change_time);
+
+ return (error);
+}
+
+int
+nfsm_chain_get_sattr(
+ struct nfsrv_descript *nd,
+ struct nfsm_chain *nmc,
+ struct vnode_attr *vap)
+{
+ int error = 0;
+ uint32_t val = 0;
+ uint64_t val64 = 0;
+ struct timespec now;
+
+ if (nd->nd_vers == NFS_VER2) {
+ /*
+ * There is/was a bug in the Sun client that puts 0xffff in the mode
+ * field of sattr when it should put in 0xffffffff. The u_short
+ * doesn't sign extend. So check the low order 2 bytes for 0xffff.
+ */
+ nfsm_chain_get_32(error, nmc, val);
+ if ((val & 0xffff) != 0xffff) {
+ VATTR_SET(vap, va_mode, val & 07777);
+ /* save the "type" bits for NFSv2 create */
+ VATTR_SET(vap, va_type, IFTOVT(val));
+ VATTR_CLEAR_ACTIVE(vap, va_type);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val != (uint32_t)-1)
+ VATTR_SET(vap, va_uid, val);
+ nfsm_chain_get_32(error, nmc, val);
+ if (val != (uint32_t)-1)
+ VATTR_SET(vap, va_gid, val);
+ /* save the "size" bits for NFSv2 create (even if they appear unset) */
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_data_size, val);
+ if (val == (uint32_t)-1)
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ nfsm_chain_get_time(error, nmc, NFS_VER2,
+ vap->va_access_time.tv_sec,
+ vap->va_access_time.tv_nsec);
+ if (vap->va_access_time.tv_sec != -1)
+ VATTR_SET_ACTIVE(vap, va_access_time);
+ nfsm_chain_get_time(error, nmc, NFS_VER2,
+ vap->va_modify_time.tv_sec,
+ vap->va_modify_time.tv_nsec);
+ if (vap->va_modify_time.tv_sec != -1)
+ VATTR_SET_ACTIVE(vap, va_modify_time);
+ return (error);
+ }
+
+ /* NFSv3 */
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_mode, val & 07777);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_uid, val);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_gid, val);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_64(error, nmc, val64);
+ VATTR_SET(vap, va_data_size, val64);
+ }
+ nanotime(&now);
+ nfsm_chain_get_32(error, nmc, val);
+ switch (val) {
+ case NFS_TIME_SET_TO_CLIENT:
+ nfsm_chain_get_time(error, nmc, nd->nd_vers,
+ vap->va_access_time.tv_sec,
+ vap->va_access_time.tv_nsec);
+ VATTR_SET_ACTIVE(vap, va_access_time);
+ vap->va_vaflags &= ~VA_UTIMES_NULL;
+ break;
+ case NFS_TIME_SET_TO_SERVER:
+ VATTR_SET(vap, va_access_time, now);
+ vap->va_vaflags |= VA_UTIMES_NULL;
+ break;
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ switch (val) {
+ case NFS_TIME_SET_TO_CLIENT:
+ nfsm_chain_get_time(error, nmc, nd->nd_vers,
+ vap->va_modify_time.tv_sec,
+ vap->va_modify_time.tv_nsec);
+ VATTR_SET_ACTIVE(vap, va_modify_time);
+ vap->va_vaflags &= ~VA_UTIMES_NULL;
+ break;
+ case NFS_TIME_SET_TO_SERVER:
+ VATTR_SET(vap, va_modify_time, now);
+ if (!VATTR_IS_ACTIVE(vap, va_access_time))
+ vap->va_vaflags |= VA_UTIMES_NULL;
+ break;
+ }
+
+ return (error);
+}
+
+/*
+ * Compare two security flavor structs
+ */
+int
+nfsrv_cmp_secflavs(struct nfs_sec *sf1, struct nfs_sec *sf2)
+{
+ int i;
+
+ if (sf1->count != sf2->count)
+ return 1;
+ for (i = 0; i < sf1->count; i++)
+ if (sf1->flavors[i] != sf2->flavors[i])
+ return 1;
+ return 0;
+}
+
+/*
+ * Build hash lists of net addresses and hang them off the NFS export.
+ * Called by nfsrv_export() to set up the lists of export addresses.
+ */
+int
+nfsrv_hang_addrlist(struct nfs_export *nx, struct user_nfs_export_args *unxa)
+{
+ struct nfs_export_net_args nxna;
+ struct nfs_netopt *no, *rn_no;
+ struct radix_node_head *rnh;
+ struct radix_node *rn;
+ struct sockaddr *saddr, *smask;
+ struct domain *dom;
+ int i, error;
+ unsigned int net;
+ user_addr_t uaddr;
+ kauth_cred_t cred;
+
+ uaddr = unxa->nxa_nets;
+ for (net = 0; net < unxa->nxa_netcount; net++, uaddr += sizeof(nxna)) {
+ error = copyin(uaddr, &nxna, sizeof(nxna));
+ if (error)
+ return (error);
+
+ if (nxna.nxna_flags & (NX_MAPROOT|NX_MAPALL)) {
+ struct posix_cred temp_pcred;
+ bzero(&temp_pcred, sizeof(temp_pcred));
+ temp_pcred.cr_uid = nxna.nxna_cred.cr_uid;
+ temp_pcred.cr_ngroups = nxna.nxna_cred.cr_ngroups;
+ for (i=0; i < nxna.nxna_cred.cr_ngroups && i < NGROUPS; i++)
+ temp_pcred.cr_groups[i] = nxna.nxna_cred.cr_groups[i];
+ cred = posix_cred_create(&temp_pcred);
+ if (!IS_VALID_CRED(cred))
+ return (ENOMEM);
+ } else {
+ cred = NOCRED;
+ }
+
+ if (nxna.nxna_addr.ss_len == 0) {
+ /* No address means this is a default/world export */
+ if (nx->nx_flags & NX_DEFAULTEXPORT) {
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ return (EEXIST);
+ }
+ nx->nx_flags |= NX_DEFAULTEXPORT;
+ nx->nx_defopt.nxo_flags = nxna.nxna_flags;
+ nx->nx_defopt.nxo_cred = cred;
+ bcopy(&nxna.nxna_sec, &nx->nx_defopt.nxo_sec, sizeof(struct nfs_sec));
+ nx->nx_expcnt++;
+ continue;
+ }
+
+ i = sizeof(struct nfs_netopt);
+ i += nxna.nxna_addr.ss_len + nxna.nxna_mask.ss_len;
+ MALLOC(no, struct nfs_netopt *, i, M_NETADDR, M_WAITOK);
+ if (!no) {
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ return (ENOMEM);
+ }
+ bzero(no, sizeof(struct nfs_netopt));
+ no->no_opt.nxo_flags = nxna.nxna_flags;
+ no->no_opt.nxo_cred = cred;
+ bcopy(&nxna.nxna_sec, &no->no_opt.nxo_sec, sizeof(struct nfs_sec));
+
+ saddr = (struct sockaddr *)(no + 1);
+ bcopy(&nxna.nxna_addr, saddr, nxna.nxna_addr.ss_len);
+ if (nxna.nxna_mask.ss_len) {
+ smask = (struct sockaddr *)((caddr_t)saddr + nxna.nxna_addr.ss_len);
+ bcopy(&nxna.nxna_mask, smask, nxna.nxna_mask.ss_len);
+ } else {
+ smask = NULL;
+ }
+ i = saddr->sa_family;
+ if ((rnh = nx->nx_rtable[i]) == 0) {
+ /*
+ * Seems silly to initialize every AF when most are not
+ * used, do so on demand here
+ */
+ TAILQ_FOREACH(dom, &domains, dom_entry) {
+ if (dom->dom_family == i && dom->dom_rtattach) {
+ dom->dom_rtattach((void **)&nx->nx_rtable[i],
+ dom->dom_rtoffset);
+ break;
+ }
+ }
+ if ((rnh = nx->nx_rtable[i]) == 0) {
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ _FREE(no, M_NETADDR);
+ return (ENOBUFS);
+ }
+ }
+ rn = (*rnh->rnh_addaddr)((caddr_t)saddr, (caddr_t)smask, rnh, no->no_rnodes);
+ if (rn == 0) {
+ /*
+ * One of the reasons that rnh_addaddr may fail is that
+ * the entry already exists. To check for this case, we
+ * look up the entry to see if it is there. If so, we
+ * do not need to make a new entry but do continue.
+ *
+ * XXX should this be rnh_lookup() instead?
+ */
+ int matched = 0;
+ rn = (*rnh->rnh_matchaddr)((caddr_t)saddr, rnh);
+ rn_no = (struct nfs_netopt *)rn;
+ if (rn != 0 && (rn->rn_flags & RNF_ROOT) == 0 &&
+ (rn_no->no_opt.nxo_flags == nxna.nxna_flags) &&
+ (!nfsrv_cmp_secflavs(&rn_no->no_opt.nxo_sec, &nxna.nxna_sec))) {
+ kauth_cred_t cred2 = rn_no->no_opt.nxo_cred;
+ if (cred == cred2) {
+ /* creds are same (or both NULL) */
+ matched = 1;
+ } else if (cred && cred2 && (kauth_cred_getuid(cred) == kauth_cred_getuid(cred2))) {
+ /*
+ * Now compare the effective and
+ * supplementary groups...
+ *
+ * Note: This comparison, as written,
+ * does not correctly indicate that
+ * the groups are equivalent, since
+ * other than the first supplementary
+ * group, which is also the effective
+ * group, order on the remaining groups
+ * doesn't matter, and this is an
+ * ordered compare.
+ */
+ gid_t groups[NGROUPS];
+ gid_t groups2[NGROUPS];
+ int groupcount = NGROUPS;
+ int group2count = NGROUPS;
+
+ if (!kauth_cred_getgroups(cred, groups, &groupcount) &&
+ !kauth_cred_getgroups(cred2, groups2, &group2count) &&
+ groupcount == group2count) {
+ for (i=0; i < group2count; i++)
+ if (groups[i] != groups2[i])
+ break;
+ if (i >= group2count || i >= NGROUPS)
+ matched = 1;
+ }
+ }
+ }
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ _FREE(no, M_NETADDR);
+ if (matched)
+ continue;
+ return (EPERM);
+ }
+ nx->nx_expcnt++;
+ }
+
+ return (0);
+}
+
+/*
+ * In order to properly track an export's netopt count, we need to pass
+ * an additional argument to nfsrv_free_netopt() so that it can decrement
+ * the export's netopt count.
+ */
+struct nfsrv_free_netopt_arg {
+ uint32_t *cnt;
+ struct radix_node_head *rnh;
+};
+
+int
+nfsrv_free_netopt(struct radix_node *rn, void *w)
+{
+ struct nfsrv_free_netopt_arg *fna = (struct nfsrv_free_netopt_arg *)w;
+ struct radix_node_head *rnh = fna->rnh;
+ uint32_t *cnt = fna->cnt;
+ struct nfs_netopt *nno = (struct nfs_netopt *)rn;
+
+ (*rnh->rnh_deladdr)(rn->rn_key, rn->rn_mask, rnh);
+ if (IS_VALID_CRED(nno->no_opt.nxo_cred))
+ kauth_cred_unref(&nno->no_opt.nxo_cred);
+ _FREE((caddr_t)rn, M_NETADDR);
+ *cnt -= 1;
+ return (0);
+}
+
+/*
+ * Free the net address hash lists that are hanging off the mount points.
+ */
+int
+nfsrv_free_addrlist(struct nfs_export *nx, struct user_nfs_export_args *unxa)
+{
+ struct nfs_export_net_args nxna;
+ struct radix_node_head *rnh;
+ struct radix_node *rn;
+ struct nfsrv_free_netopt_arg fna;
+ struct nfs_netopt *nno;
+ user_addr_t uaddr;
+ unsigned int net;
+ int i, error;
+
+ if (!unxa || !unxa->nxa_netcount) {
+ /* delete everything */
+ for (i = 0; i <= AF_MAX; i++)
+ if ( (rnh = nx->nx_rtable[i]) ) {
+ fna.rnh = rnh;
+ fna.cnt = &nx->nx_expcnt;
+ (*rnh->rnh_walktree)(rnh, nfsrv_free_netopt, (caddr_t)&fna);
+ _FREE((caddr_t)rnh, M_RTABLE);
+ nx->nx_rtable[i] = 0;
+ }
+ return (0);
+ }
+
+ /* delete only the exports specified */
+ uaddr = unxa->nxa_nets;
+ for (net = 0; net < unxa->nxa_netcount; net++, uaddr += sizeof(nxna)) {
+ error = copyin(uaddr, &nxna, sizeof(nxna));
+ if (error)
+ return (error);
+
+ if (nxna.nxna_addr.ss_len == 0) {
+ /* No address means this is a default/world export */
+ if (nx->nx_flags & NX_DEFAULTEXPORT) {
+ nx->nx_flags &= ~NX_DEFAULTEXPORT;
+ if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
+ kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ }
+ nx->nx_expcnt--;
+ }
+ continue;
+ }
+
+ if ((rnh = nx->nx_rtable[nxna.nxna_addr.ss_family]) == 0) {
+ /* AF not initialized? */
+ if (!(unxa->nxa_flags & NXA_ADD))
+ printf("nfsrv_free_addrlist: address not found (0)\n");
+ continue;
+ }
+
+ rn = (*rnh->rnh_lookup)(&nxna.nxna_addr,
+ nxna.nxna_mask.ss_len ? &nxna.nxna_mask : NULL, rnh);
+ if (!rn || (rn->rn_flags & RNF_ROOT)) {
+ if (!(unxa->nxa_flags & NXA_ADD))
+ printf("nfsrv_free_addrlist: address not found (1)\n");
+ continue;
+ }
+
+ (*rnh->rnh_deladdr)(rn->rn_key, rn->rn_mask, rnh);
+ nno = (struct nfs_netopt *)rn;
+ if (IS_VALID_CRED(nno->no_opt.nxo_cred))
+ kauth_cred_unref(&nno->no_opt.nxo_cred);
+ _FREE((caddr_t)rn, M_NETADDR);
+
+ nx->nx_expcnt--;
+ if (nx->nx_expcnt == ((nx->nx_flags & NX_DEFAULTEXPORT) ? 1 : 0)) {
+ /* no more entries in rnh, so free it up */
+ _FREE((caddr_t)rnh, M_RTABLE);
+ nx->nx_rtable[nxna.nxna_addr.ss_family] = 0;
+ }
+ }
+
+ return (0);
+}
+
+void enablequotas(struct mount *mp, vfs_context_t ctx); // XXX
+
+int
+nfsrv_export(struct user_nfs_export_args *unxa, vfs_context_t ctx)
+{
+ int error = 0;
+ size_t pathlen;
+ struct nfs_exportfs *nxfs, *nxfs2, *nxfs3;
+ struct nfs_export *nx, *nx2, *nx3;
+ struct nfs_filehandle nfh;
+ struct nameidata mnd, xnd;
+ vnode_t mvp = NULL, xvp = NULL;
+ mount_t mp = NULL;
+ char path[MAXPATHLEN];
+ int expisroot;
+
+ if (unxa->nxa_flags == NXA_CHECK) {
+ /* just check if the path is an NFS-exportable file system */
+ error = copyinstr(unxa->nxa_fspath, path, MAXPATHLEN, &pathlen);
+ if (error)
+ return (error);
+ NDINIT(&mnd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(path), ctx);
+ error = namei(&mnd);
+ if (error)
+ return (error);
+ mvp = mnd.ni_vp;
+ mp = vnode_mount(mvp);
+ /* make sure it's the root of a file system */
+ if (!vnode_isvroot(mvp))
+ error = EINVAL;
+ /* make sure the file system is NFS-exportable */
+ if (!error) {
+ nfh.nfh_len = NFSV3_MAX_FID_SIZE;
+ error = VFS_VPTOFH(mvp, (int*)&nfh.nfh_len, &nfh.nfh_fid[0], NULL);
+ }
+ if (!error && (nfh.nfh_len > (int)NFSV3_MAX_FID_SIZE))
+ error = EIO;
+ if (!error && !(mp->mnt_vtable->vfc_vfsflags & VFC_VFSREADDIR_EXTENDED))
+ error = EISDIR;
+ vnode_put(mvp);
+ nameidone(&mnd);
+ return (error);
+ }
+
+ /* all other operations: must be super user */
+ if ((error = vfs_context_suser(ctx)))
+ return (error);
+
+ if (unxa->nxa_flags & NXA_DELETE_ALL) {
+ /* delete all exports on all file systems */
+ lck_rw_lock_exclusive(&nfsrv_export_rwlock);
+ while ((nxfs = LIST_FIRST(&nfsrv_exports))) {
+ mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
+ if (mp) {
+ vfs_clearflags(mp, MNT_EXPORTED);
+ mount_iterdrop(mp);
+ mp = NULL;
+ }
+ /* delete all exports on this file system */
+ while ((nx = LIST_FIRST(&nxfs->nxfs_exports))) {
+ LIST_REMOVE(nx, nx_next);
+ LIST_REMOVE(nx, nx_hash);
+ /* delete all netopts for this export */
+ nfsrv_free_addrlist(nx, NULL);
+ nx->nx_flags &= ~NX_DEFAULTEXPORT;
+ if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
+ kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ }
+ /* free active user list for this export */
+ nfsrv_free_user_list(&nx->nx_user_list);
+ FREE(nx->nx_path, M_TEMP);
+ FREE(nx, M_TEMP);
+ }
+ LIST_REMOVE(nxfs, nxfs_next);
+ FREE(nxfs->nxfs_path, M_TEMP);
+ FREE(nxfs, M_TEMP);
+ }
+ if (nfsrv_export_hashtbl) {
+ /* all exports deleted, clean up export hash table */
+ FREE(nfsrv_export_hashtbl, M_TEMP);
+ nfsrv_export_hashtbl = NULL;
+ }
+ lck_rw_done(&nfsrv_export_rwlock);
+ return (0);
+ }
+
+ error = copyinstr(unxa->nxa_fspath, path, MAXPATHLEN, &pathlen);
+ if (error)
+ return (error);
+
+ lck_rw_lock_exclusive(&nfsrv_export_rwlock);
+
+ /* init export hash table if not already */
+ if (!nfsrv_export_hashtbl) {
+ if (nfsrv_export_hash_size <= 0)
+ nfsrv_export_hash_size = NFSRVEXPHASHSZ;
+ nfsrv_export_hashtbl = hashinit(nfsrv_export_hash_size, M_TEMP, &nfsrv_export_hash);
+ }
+
+ // first check if we've already got an exportfs with the given ID
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ if (nxfs->nxfs_id == unxa->nxa_fsid)
+ break;
+ }
+ if (nxfs) {
+ /* verify exported FS path matches given path */
+ if (strncmp(path, nxfs->nxfs_path, MAXPATHLEN)) {
+ error = EEXIST;
+ goto unlock_out;
+ }
+ if ((unxa->nxa_flags & (NXA_ADD|NXA_OFFLINE)) == NXA_ADD) {
+ /* if adding, verify that the mount is still what we expect */
+ mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
+ if (mp) {
+ mount_ref(mp, 0);
+ mount_iterdrop(mp);
+ }
+ /* find exported FS root vnode */
+ NDINIT(&mnd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(nxfs->nxfs_path), ctx);
+ error = namei(&mnd);
+ if (error)
+ goto unlock_out;
+ mvp = mnd.ni_vp;
+ /* make sure it's (still) the root of a file system */
+ if (!vnode_isvroot(mvp)) {
+ error = EINVAL;
+ goto out;
+ }
+ /* sanity check: this should be same mount */
+ if (mp != vnode_mount(mvp)) {
+ error = EINVAL;
+ goto out;
+ }
+ }
+ } else {
+ /* no current exported file system with that ID */
+ if (!(unxa->nxa_flags & NXA_ADD)) {
+ error = ENOENT;
+ goto unlock_out;
+ }
+
+ /* find exported FS root vnode */
+ NDINIT(&mnd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(path), ctx);
+ error = namei(&mnd);
+ if (error) {
+ if (!(unxa->nxa_flags & NXA_OFFLINE))
+ goto unlock_out;
+ } else {
+ mvp = mnd.ni_vp;
+ /* make sure it's the root of a file system */
+ if (!vnode_isvroot(mvp)) {
+ /* bail if not marked offline */
+ if (!(unxa->nxa_flags & NXA_OFFLINE)) {
+ error = EINVAL;
+ goto out;
+ }
+ vnode_put(mvp);
+ nameidone(&mnd);
+ mvp = NULL;
+ } else {
+ mp = vnode_mount(mvp);
+ mount_ref(mp, 0);
+
+ /* make sure the file system is NFS-exportable */
+ nfh.nfh_len = NFSV3_MAX_FID_SIZE;
+ error = VFS_VPTOFH(mvp, (int*)&nfh.nfh_len, &nfh.nfh_fid[0], NULL);
+ if (!error && (nfh.nfh_len > (int)NFSV3_MAX_FID_SIZE))
+ error = EIO;
+ if (!error && !(mp->mnt_vtable->vfc_vfsflags & VFC_VFSREADDIR_EXTENDED))
+ error = EISDIR;
+ if (error)
+ goto out;
+ }
+ }
+
+ /* add an exportfs for it */
+ MALLOC(nxfs, struct nfs_exportfs *, sizeof(struct nfs_exportfs), M_TEMP, M_WAITOK);
+ if (!nxfs) {
+ error = ENOMEM;
+ goto out;
+ }
+ bzero(nxfs, sizeof(struct nfs_exportfs));
+ nxfs->nxfs_id = unxa->nxa_fsid;
+ MALLOC(nxfs->nxfs_path, char*, pathlen, M_TEMP, M_WAITOK);
+ if (!nxfs->nxfs_path) {
+ FREE(nxfs, M_TEMP);
+ error = ENOMEM;
+ goto out;
+ }
+ bcopy(path, nxfs->nxfs_path, pathlen);
+ /* insert into list in reverse-sorted order */
+ nxfs3 = NULL;
+ LIST_FOREACH(nxfs2, &nfsrv_exports, nxfs_next) {
+ if (strncmp(nxfs->nxfs_path, nxfs2->nxfs_path, MAXPATHLEN) > 0)
+ break;
+ nxfs3 = nxfs2;
+ }
+ if (nxfs2)
+ LIST_INSERT_BEFORE(nxfs2, nxfs, nxfs_next);
+ else if (nxfs3)
+ LIST_INSERT_AFTER(nxfs3, nxfs, nxfs_next);
+ else
+ LIST_INSERT_HEAD(&nfsrv_exports, nxfs, nxfs_next);
+
+ /* make sure any quotas are enabled before we export the file system */
+ if (mp)
+ enablequotas(mp, ctx);
+ }
+
+ if (unxa->nxa_exppath) {
+ error = copyinstr(unxa->nxa_exppath, path, MAXPATHLEN, &pathlen);
+ if (error)
+ goto out;
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+ if (nx->nx_id == unxa->nxa_expid)
+ break;
+ }
+ if (nx) {
+ /* verify exported FS path matches given path */
+ if (strncmp(path, nx->nx_path, MAXPATHLEN)) {
+ error = EEXIST;
+ goto out;
+ }
+ } else {
+ /* no current export with that ID */
+ if (!(unxa->nxa_flags & NXA_ADD)) {
+ error = ENOENT;
+ goto out;
+ }
+ /* add an export for it */
+ MALLOC(nx, struct nfs_export *, sizeof(struct nfs_export), M_TEMP, M_WAITOK);
+ if (!nx) {
+ error = ENOMEM;
+ goto out1;
+ }
+ bzero(nx, sizeof(struct nfs_export));
+ nx->nx_id = unxa->nxa_expid;
+ nx->nx_fs = nxfs;
+ microtime(&nx->nx_exptime);
+ MALLOC(nx->nx_path, char*, pathlen, M_TEMP, M_WAITOK);
+ if (!nx->nx_path) {
+ error = ENOMEM;
+ FREE(nx, M_TEMP);
+ nx = NULL;
+ goto out1;
+ }
+ bcopy(path, nx->nx_path, pathlen);
+ /* initialize the active user list */
+ nfsrv_init_user_list(&nx->nx_user_list);
+ /* insert into list in reverse-sorted order */
+ nx3 = NULL;
+ LIST_FOREACH(nx2, &nxfs->nxfs_exports, nx_next) {
+ if (strncmp(nx->nx_path, nx2->nx_path, MAXPATHLEN) > 0)
+ break;
+ nx3 = nx2;
+ }
+ if (nx2)
+ LIST_INSERT_BEFORE(nx2, nx, nx_next);
+ else if (nx3)
+ LIST_INSERT_AFTER(nx3, nx, nx_next);
+ else
+ LIST_INSERT_HEAD(&nxfs->nxfs_exports, nx, nx_next);
+ /* insert into hash */
+ LIST_INSERT_HEAD(NFSRVEXPHASH(nxfs->nxfs_id, nx->nx_id), nx, nx_hash);
+
+ /*
+ * We don't allow/support nested exports. Check if the new entry
+ * nests with the entries before and after or if there's an
+ * entry for the file system root and subdirs.
+ */
+ error = 0;
+ if ((nx3 && !strncmp(nx3->nx_path, nx->nx_path, pathlen - 1) &&
+ (nx3->nx_path[pathlen-1] == '/')) ||
+ (nx2 && !strncmp(nx2->nx_path, nx->nx_path, strlen(nx2->nx_path)) &&
+ (nx->nx_path[strlen(nx2->nx_path)] == '/')))
+ error = EINVAL;
+ if (!error) {
+ /* check export conflict with fs root export and vice versa */
+ expisroot = !nx->nx_path[0] ||
+ ((nx->nx_path[0] == '.') && !nx->nx_path[1]);
+ LIST_FOREACH(nx2, &nxfs->nxfs_exports, nx_next) {
+ if (expisroot) {
+ if (nx2 != nx)
+ break;
+ } else if (!nx2->nx_path[0])
+ break;
+ else if ((nx2->nx_path[0] == '.') && !nx2->nx_path[1])
+ break;
+ }
+ if (nx2)
+ error = EINVAL;
+ }
+ if (error) {
+ /*
+ * Don't actually return an error because mountd is
+ * probably about to delete the conflicting export.
+ * This can happen when a new export momentarily conflicts
+ * with an old export while the transition is being made.
+ * Theoretically, mountd could be written to avoid this
+ * transient situation - but it would greatly increase the
+ * complexity of mountd for very little overall benefit.
+ */
+ printf("nfsrv_export: warning: nested exports: %s/%s\n",
+ nxfs->nxfs_path, nx->nx_path);
+ error = 0;
+ }
+ nx->nx_fh.nfh_xh.nxh_flags = NXHF_INVALIDFH;
+ }
+ /* make sure file handle is set up */
+ if ((nx->nx_fh.nfh_xh.nxh_version != htonl(NFS_FH_VERSION)) ||
+ (nx->nx_fh.nfh_xh.nxh_flags & NXHF_INVALIDFH)) {
+ /* try to set up export root file handle */
+ nx->nx_fh.nfh_xh.nxh_version = htonl(NFS_FH_VERSION);
+ nx->nx_fh.nfh_xh.nxh_fsid = htonl(nx->nx_fs->nxfs_id);
+ nx->nx_fh.nfh_xh.nxh_expid = htonl(nx->nx_id);
+ nx->nx_fh.nfh_xh.nxh_flags = 0;
+ nx->nx_fh.nfh_xh.nxh_reserved = 0;
+ nx->nx_fh.nfh_fhp = (u_char*)&nx->nx_fh.nfh_xh;
+ bzero(&nx->nx_fh.nfh_fid[0], NFSV2_MAX_FID_SIZE);
+ if (mvp) {
+ /* find export root vnode */
+ if (!nx->nx_path[0] || ((nx->nx_path[0] == '.') && !nx->nx_path[1])) {
+ /* exporting file system's root directory */
+ xvp = mvp;
+ vnode_get(xvp);
+ } else {
+ xnd.ni_cnd.cn_nameiop = LOOKUP;
+#if CONFIG_TRIGGERS
+ xnd.ni_op = OP_LOOKUP;
+#endif
+ xnd.ni_cnd.cn_flags = LOCKLEAF;
+ xnd.ni_pathlen = pathlen - 1;
+ xnd.ni_cnd.cn_nameptr = xnd.ni_cnd.cn_pnbuf = path;
+ xnd.ni_startdir = mvp;
+ xnd.ni_usedvp = mvp;
+ xnd.ni_cnd.cn_context = ctx;
+ while ((error = lookup(&xnd)) == ERECYCLE) {
+ xnd.ni_cnd.cn_flags = LOCKLEAF;
+ xnd.ni_cnd.cn_nameptr = xnd.ni_cnd.cn_pnbuf;
+ xnd.ni_usedvp = xnd.ni_dvp = xnd.ni_startdir = mvp;
+ }
+ if (error)
+ goto out1;
+ xvp = xnd.ni_vp;
+ }
+
+ if (vnode_vtype(xvp) != VDIR) {
+ error = EINVAL;
+ vnode_put(xvp);
+ goto out1;
+ }
+
+ /* grab file handle */
+ nx->nx_fh.nfh_len = NFSV3_MAX_FID_SIZE;
+ error = VFS_VPTOFH(xvp, (int*)&nx->nx_fh.nfh_len, &nx->nx_fh.nfh_fid[0], NULL);
+ if (!error && (nx->nx_fh.nfh_len > (int)NFSV3_MAX_FID_SIZE)) {
+ error = EIO;
+ } else {
+ nx->nx_fh.nfh_xh.nxh_fidlen = nx->nx_fh.nfh_len;
+ nx->nx_fh.nfh_len += sizeof(nx->nx_fh.nfh_xh);
+ }
+
+ vnode_put(xvp);
+ if (error)
+ goto out1;
+ } else {
+ nx->nx_fh.nfh_xh.nxh_flags = NXHF_INVALIDFH;
+ nx->nx_fh.nfh_xh.nxh_fidlen = 0;
+ nx->nx_fh.nfh_len = sizeof(nx->nx_fh.nfh_xh);
+ }
+ }
+ } else {
+ nx = NULL;
+ }
+
+ /* perform the export changes */
+ if (unxa->nxa_flags & NXA_DELETE) {
+ if (!nx) {
+ /* delete all exports on this file system */
+ while ((nx = LIST_FIRST(&nxfs->nxfs_exports))) {
+ LIST_REMOVE(nx, nx_next);
+ LIST_REMOVE(nx, nx_hash);
+ /* delete all netopts for this export */
+ nfsrv_free_addrlist(nx, NULL);
+ nx->nx_flags &= ~NX_DEFAULTEXPORT;
+ if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
+ kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ }
+ /* delete active user list for this export */
+ nfsrv_free_user_list(&nx->nx_user_list);
+ FREE(nx->nx_path, M_TEMP);
+ FREE(nx, M_TEMP);
+ }
+ goto out1;
+ } else if (!unxa->nxa_netcount) {
+ /* delete all netopts for this export */
+ nfsrv_free_addrlist(nx, NULL);
+ nx->nx_flags &= ~NX_DEFAULTEXPORT;
+ if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
+ kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ }
+ } else {
+ /* delete only the netopts for the given addresses */
+ error = nfsrv_free_addrlist(nx, unxa);
+ if (error)
+ goto out1;
+ }
+ }
+ if (unxa->nxa_flags & NXA_ADD) {
+ /*
+ * If going offline set the export time so that when
+ * coming back on line we will present a new write verifier
+ * to the client.
+ */
+ if (unxa->nxa_flags & NXA_OFFLINE)
+ microtime(&nx->nx_exptime);
+
+ error = nfsrv_hang_addrlist(nx, unxa);
+ if (!error && mp)
+ vfs_setflags(mp, MNT_EXPORTED);
+ }
+
+out1:
+ if (nx && !nx->nx_expcnt) {
+ /* export has no export options */
+ LIST_REMOVE(nx, nx_next);
+ LIST_REMOVE(nx, nx_hash);
+ /* delete active user list for this export */
+ nfsrv_free_user_list(&nx->nx_user_list);
+ FREE(nx->nx_path, M_TEMP);
+ FREE(nx, M_TEMP);
+ }
+ if (LIST_EMPTY(&nxfs->nxfs_exports)) {
+ /* exported file system has no more exports */
+ LIST_REMOVE(nxfs, nxfs_next);
+ FREE(nxfs->nxfs_path, M_TEMP);
+ FREE(nxfs, M_TEMP);
+ if (mp)
+ vfs_clearflags(mp, MNT_EXPORTED);
+ }
+
+out:
+ if (mvp) {
+ vnode_put(mvp);
+ nameidone(&mnd);
+ }
+unlock_out:
+ if (mp)
+ mount_drop(mp, 0);
+ lck_rw_done(&nfsrv_export_rwlock);
+ return (error);
+}
+
+struct nfs_export_options *
+nfsrv_export_lookup(struct nfs_export *nx, mbuf_t nam)
+{
+ struct nfs_export_options *nxo = NULL;
+ struct nfs_netopt *no = NULL;
+ struct radix_node_head *rnh;
+ struct sockaddr *saddr;
+
+ /* Lookup in the export list first. */
+ if (nam != NULL) {
+ saddr = mbuf_data(nam);
+ rnh = nx->nx_rtable[saddr->sa_family];
+ if (rnh != NULL) {
+ no = (struct nfs_netopt *)
+ (*rnh->rnh_matchaddr)((caddr_t)saddr, rnh);
+ if (no && no->no_rnodes->rn_flags & RNF_ROOT)
+ no = NULL;
+ if (no)
+ nxo = &no->no_opt;
+ }
+ }
+ /* If no address match, use the default if it exists. */
+ if ((nxo == NULL) && (nx->nx_flags & NX_DEFAULTEXPORT))
+ nxo = &nx->nx_defopt;
+ return (nxo);
+}
+
+/* find an export for the given handle */
+struct nfs_export *
+nfsrv_fhtoexport(struct nfs_filehandle *nfhp)
+{
+ struct nfs_exphandle *nxh = (struct nfs_exphandle*)nfhp->nfh_fhp;
+ struct nfs_export *nx;
+ uint32_t fsid, expid;
+
+ if (!nfsrv_export_hashtbl)
+ return (NULL);
+ fsid = ntohl(nxh->nxh_fsid);
+ expid = ntohl(nxh->nxh_expid);
+ nx = NFSRVEXPHASH(fsid, expid)->lh_first;
+ for (; nx; nx = LIST_NEXT(nx, nx_hash)) {
+ if (nx->nx_fs->nxfs_id != fsid)
+ continue;
+ if (nx->nx_id != expid)
+ continue;
+ break;
+ }
+ return (nx);
+}
+
+/*
+ * nfsrv_fhtovp() - convert FH to vnode and export info
+ */
+int
+nfsrv_fhtovp(
+ struct nfs_filehandle *nfhp,
+ struct nfsrv_descript *nd,
+ vnode_t *vpp,
+ struct nfs_export **nxp,
+ struct nfs_export_options **nxop)
+{
+ struct nfs_exphandle *nxh = (struct nfs_exphandle*)nfhp->nfh_fhp;
+ struct nfs_export_options *nxo;
+ u_char *fidp;
+ int error;
+ struct mount *mp;
+ mbuf_t nam = NULL;
+ uint32_t v;
+ int i, valid;
+
+ *vpp = NULL;
+ *nxp = NULL;
+ *nxop = NULL;
+
+ if (nd != NULL)
+ nam = nd->nd_nam;
+
+ v = ntohl(nxh->nxh_version);
+ if (v != NFS_FH_VERSION) {
+ /* file handle format not supported */
+ return (ESTALE);
+ }
+ if (nfhp->nfh_len > NFSV3_MAX_FH_SIZE)
+ return (EBADRPC);
+ if (nfhp->nfh_len < (int)sizeof(struct nfs_exphandle))
+ return (ESTALE);
+ v = ntohs(nxh->nxh_flags);
+ if (v & NXHF_INVALIDFH)
+ return (ESTALE);
+
+ *nxp = nfsrv_fhtoexport(nfhp);
+ if (!*nxp)
+ return (ESTALE);
+
+ /* Get the export option structure for this <export, client> tuple. */
+ *nxop = nxo = nfsrv_export_lookup(*nxp, nam);
+ if (nam && (*nxop == NULL))
+ return (EACCES);
+
+ if (nd != NULL) {
+ /* Validate the security flavor of the request */
+ for (i = 0, valid = 0; i < nxo->nxo_sec.count; i++) {
+ if (nd->nd_sec == nxo->nxo_sec.flavors[i]) {
+ valid = 1;
+ break;
+ }
+ }
+ if (!valid) {
+ /*
+ * RFC 2623 section 2.3.2 recommends no authentication
+ * requirement for certain NFS procedures used for mounting.
+ * This allows an unauthenticated superuser on the client
+ * to do mounts for the benefit of authenticated users.
+ */
+ if (nd->nd_vers == NFS_VER2)
+ if (nd->nd_procnum == NFSV2PROC_GETATTR ||
+ nd->nd_procnum == NFSV2PROC_STATFS)
+ valid = 1;
+ if (nd->nd_vers == NFS_VER3)
+ if (nd->nd_procnum == NFSPROC_FSINFO)
+ valid = 1;
+
+ if (!valid)
+ return (NFSERR_AUTHERR | AUTH_REJECTCRED);
+ }
+ }
+
+ if (nxo && (nxo->nxo_flags & NX_OFFLINE))
+ return ((nd == NULL || nd->nd_vers == NFS_VER2) ? ESTALE : NFSERR_TRYLATER);
+
+ /* find mount structure */
+ mp = vfs_getvfs_by_mntonname((*nxp)->nx_fs->nxfs_path);
+ if (mp) {
+ error = vfs_busy(mp, LK_NOWAIT);
+ mount_iterdrop(mp);
+ if (error)
+ mp = NULL;
+ }
+ if (!mp) {
+ /*
+ * We have an export, but no mount?
+ * Perhaps the export just hasn't been marked offline yet.
+ */
+ return ((nd == NULL || nd->nd_vers == NFS_VER2) ? ESTALE : NFSERR_TRYLATER);
+ }
+
+ fidp = nfhp->nfh_fhp + sizeof(*nxh);
+ error = VFS_FHTOVP(mp, nxh->nxh_fidlen, fidp, vpp, NULL);
+ vfs_unbusy(mp);
+ if (error)
+ return (error);
+ /* vnode pointer should be good at this point or ... */
+ if (*vpp == NULL)
+ return (ESTALE);
+ return (0);
+}
+
+/*
+ * nfsrv_credcheck() - check/map credentials according
+ * to given export options.
+ */
+int
+nfsrv_credcheck(
+ struct nfsrv_descript *nd,
+ vfs_context_t ctx,
+ __unused struct nfs_export *nx,
+ struct nfs_export_options *nxo)
+{
+ if (nxo && nxo->nxo_cred) {
+ if ((nxo->nxo_flags & NX_MAPALL) ||
+ ((nxo->nxo_flags & NX_MAPROOT) && !suser(nd->nd_cr, NULL))) {
+ kauth_cred_ref(nxo->nxo_cred);
+ kauth_cred_unref(&nd->nd_cr);
+ nd->nd_cr = nxo->nxo_cred;
+ }
+ }
+ ctx->vc_ucred = nd->nd_cr;
+ return (0);
+}
+
+/*
+ * nfsrv_vptofh() - convert vnode to file handle for given export
+ *
+ * If the caller is passing in a vnode for a ".." directory entry,
+ * they can pass a directory NFS file handle (dnfhp) which will be
+ * checked against the root export file handle. If it matches, we
+ * refuse to provide the file handle for the out-of-export directory.
+ */
+int
+nfsrv_vptofh(
+ struct nfs_export *nx,
+ int nfsvers,
+ struct nfs_filehandle *dnfhp,
+ vnode_t vp,
+ vfs_context_t ctx,
+ struct nfs_filehandle *nfhp)
+{
+ int error;
+ uint32_t maxfidsize;
+
+ nfhp->nfh_fhp = (u_char*)&nfhp->nfh_xh;
+ nfhp->nfh_xh.nxh_version = htonl(NFS_FH_VERSION);
+ nfhp->nfh_xh.nxh_fsid = htonl(nx->nx_fs->nxfs_id);
+ nfhp->nfh_xh.nxh_expid = htonl(nx->nx_id);
+ nfhp->nfh_xh.nxh_flags = 0;
+ nfhp->nfh_xh.nxh_reserved = 0;
+
+ if (nfsvers == NFS_VER2)
+ bzero(&nfhp->nfh_fid[0], NFSV2_MAX_FID_SIZE);
+
+ /* if directory FH matches export root, return invalid FH */
+ if (dnfhp && nfsrv_fhmatch(dnfhp, &nx->nx_fh)) {
+ if (nfsvers == NFS_VER2)
+ nfhp->nfh_len = NFSX_V2FH;
+ else
+ nfhp->nfh_len = sizeof(nfhp->nfh_xh);
+ nfhp->nfh_xh.nxh_fidlen = 0;
+ nfhp->nfh_xh.nxh_flags = htons(NXHF_INVALIDFH);
+ return (0);
+ }
+
+ if (nfsvers == NFS_VER2)
+ maxfidsize = NFSV2_MAX_FID_SIZE;
+ else
+ maxfidsize = NFSV3_MAX_FID_SIZE;
+ nfhp->nfh_len = maxfidsize;
+
+ error = VFS_VPTOFH(vp, (int*)&nfhp->nfh_len, &nfhp->nfh_fid[0], ctx);
+ if (error)
+ return (error);
+ if (nfhp->nfh_len > maxfidsize)
+ return (EOVERFLOW);
+ nfhp->nfh_xh.nxh_fidlen = nfhp->nfh_len;
+ nfhp->nfh_len += sizeof(nfhp->nfh_xh);
+ if ((nfsvers == NFS_VER2) && (nfhp->nfh_len < NFSX_V2FH))
+ nfhp->nfh_len = NFSX_V2FH;
+
+ return (0);
+}
+
+/*
+ * Compare two file handles to see it they're the same.
+ * Note that we don't use nfh_len because that may include
+ * padding in an NFSv2 file handle.
+ */
+int
+nfsrv_fhmatch(struct nfs_filehandle *fh1, struct nfs_filehandle *fh2)
+{
+ struct nfs_exphandle *nxh1, *nxh2;
+ int len1, len2;
+
+ nxh1 = (struct nfs_exphandle *)fh1->nfh_fhp;
+ nxh2 = (struct nfs_exphandle *)fh2->nfh_fhp;
+ len1 = sizeof(fh1->nfh_xh) + nxh1->nxh_fidlen;
+ len2 = sizeof(fh2->nfh_xh) + nxh2->nxh_fidlen;
+ if (len1 != len2)
+ return (0);
+ if (bcmp(nxh1, nxh2, len1))
+ return (0);
+ return (1);
+}
+
+/*
+ * Functions for dealing with active user lists
+ */
+
+/*
+ * Search the hash table for a user node with a matching IP address and uid field.
+ * If found, the node's tm_last timestamp is updated and the node is returned.
+ *
+ * If not found, a new node is allocated (or reclaimed via LRU), initialized, and returned.
+ * Returns NULL if a new node could not be allcoated.
+ *
+ * The list's user_mutex lock MUST be held.
+ */
+struct nfs_user_stat_node *
+nfsrv_get_user_stat_node(struct nfs_active_user_list *list, struct sockaddr *saddr, uid_t uid)
+{
+ struct nfs_user_stat_node *unode;
+ struct timeval now;
+ struct nfs_user_stat_hashtbl_head *head;
+
+ /* seach the hash table */
+ head = NFS_USER_STAT_HASH(list->user_hashtbl, uid);
+ LIST_FOREACH(unode, head, hash_link) {
+ if ((uid == unode->uid) && (nfs_sockaddr_cmp(saddr, (struct sockaddr*)&unode->sock) == 0)) {
+ /* found matching node */
+ break;
+ }
+ }
+
+ if (unode) {
+ /* found node in the hash table, now update lru position */
+ TAILQ_REMOVE(&list->user_lru, unode, lru_link);
+ TAILQ_INSERT_TAIL(&list->user_lru, unode, lru_link);
+
+ /* update time stamp */
+ microtime(&now);
+ unode->tm_last = (uint32_t)now.tv_sec;
+ return unode;
+ }
+
+ if (list->node_count < nfsrv_user_stat_max_nodes) {
+ /* Allocate a new node */
+ MALLOC(unode, struct nfs_user_stat_node *, sizeof(struct nfs_user_stat_node),
+ M_TEMP, M_WAITOK | M_ZERO);
+
+ if (!unode)
+ return NULL;
+
+ /* increment node count */
+ OSAddAtomic(1, &nfsrv_user_stat_node_count);
+ list->node_count++;
+ } else {
+ /* reuse the oldest node in the lru list */
+ unode = TAILQ_FIRST(&list->user_lru);
+
+ if (!unode)
+ return NULL;
+
+ /* Remove the node */
+ TAILQ_REMOVE(&list->user_lru, unode, lru_link);
+ LIST_REMOVE(unode, hash_link);
+ }
+
+ /* Initialize the node */
+ unode->uid = uid;
+ bcopy(saddr, &unode->sock, saddr->sa_len);
+ microtime(&now);
+ unode->ops = 0;
+ unode->bytes_read = 0;
+ unode->bytes_written = 0;
+ unode->tm_start = (uint32_t)now.tv_sec;
+ unode->tm_last = (uint32_t)now.tv_sec;
+
+ /* insert the node */
+ TAILQ_INSERT_TAIL(&list->user_lru, unode, lru_link);
+ LIST_INSERT_HEAD(head, unode, hash_link);
+
+ return unode;
+}
+
+void
+nfsrv_update_user_stat(struct nfs_export *nx, struct nfsrv_descript *nd, uid_t uid, u_int ops, u_int rd_bytes, u_int wr_bytes)
+{
+ struct nfs_user_stat_node *unode;
+ struct nfs_active_user_list *ulist;
+ struct sockaddr *saddr;
+
+ if ((!nfsrv_user_stat_enabled) || (!nx) || (!nd) || (!nd->nd_nam))
+ return;
+
+ saddr = (struct sockaddr *)mbuf_data(nd->nd_nam);
+
+ /* check address family before going any further */
+ if ((saddr->sa_family != AF_INET) && (saddr->sa_family != AF_INET6))
+ return;
+
+ ulist = &nx->nx_user_list;
+
+ /* lock the active user list */
+ lck_mtx_lock(&ulist->user_mutex);
+
+ /* get the user node */
+ unode = nfsrv_get_user_stat_node(ulist, saddr, uid);
+
+ if (!unode) {
+ lck_mtx_unlock(&ulist->user_mutex);
+ return;
+ }
+
+ /* update counters */
+ unode->ops += ops;
+ unode->bytes_read += rd_bytes;
+ unode->bytes_written += wr_bytes;
+
+ /* done */
+ lck_mtx_unlock(&ulist->user_mutex);
+}
+
+/* initialize an active user list */
+void
+nfsrv_init_user_list(struct nfs_active_user_list *ulist)
+{
+ uint i;
+
+ /* initialize the lru */
+ TAILQ_INIT(&ulist->user_lru);
+
+ /* initialize the hash table */
+ for(i = 0; i < NFS_USER_STAT_HASH_SIZE; i++)
+ LIST_INIT(&ulist->user_hashtbl[i]);
+ ulist->node_count = 0;
+
+ lck_mtx_init(&ulist->user_mutex, nfsrv_active_user_mutex_group, LCK_ATTR_NULL);
+}
+
+/* Free all nodes in an active user list */
+void
+nfsrv_free_user_list(struct nfs_active_user_list *ulist)
+{
+ struct nfs_user_stat_node *unode;
+
+ if (!ulist)
+ return;
+
+ while ((unode = TAILQ_FIRST(&ulist->user_lru))) {
+ /* Remove node and free */
+ TAILQ_REMOVE(&ulist->user_lru, unode, lru_link);
+ LIST_REMOVE(unode, hash_link);
+ FREE(unode, M_TEMP);
+
+ /* decrement node count */
+ OSAddAtomic(-1, &nfsrv_user_stat_node_count);
+ }
+ ulist->node_count = 0;
+
+ lck_mtx_destroy(&ulist->user_mutex, nfsrv_active_user_mutex_group);
+}
+
+/* Reclaim old expired user nodes from active user lists. */
+void
+nfsrv_active_user_list_reclaim(void)
+{
+ struct nfs_exportfs *nxfs;
+ struct nfs_export *nx;
+ struct nfs_active_user_list *ulist;
+ struct nfs_user_stat_hashtbl_head oldlist;
+ struct nfs_user_stat_node *unode, *unode_next;
+ struct timeval now;
+ uint32_t tstale;
+
+ LIST_INIT(&oldlist);
+
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ microtime(&now);
+ tstale = now.tv_sec - nfsrv_user_stat_max_idle_sec;
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+ /* Scan through all user nodes of this export */
+ ulist = &nx->nx_user_list;
+ lck_mtx_lock(&ulist->user_mutex);
+ for (unode = TAILQ_FIRST(&ulist->user_lru); unode; unode = unode_next) {
+ unode_next = TAILQ_NEXT(unode, lru_link);
+
+ /* check if this node has expired */
+ if (unode->tm_last >= tstale)
+ break;
+
+ /* Remove node from the active user list */
+ TAILQ_REMOVE(&ulist->user_lru, unode, lru_link);
+ LIST_REMOVE(unode, hash_link);
+
+ /* Add node to temp list */
+ LIST_INSERT_HEAD(&oldlist, unode, hash_link);
+
+ /* decrement node count */
+ OSAddAtomic(-1, &nfsrv_user_stat_node_count);
+ ulist->node_count--;
+ }
+ /* can unlock this export's list now */
+ lck_mtx_unlock(&ulist->user_mutex);
+ }
+ }
+ lck_rw_done(&nfsrv_export_rwlock);
+
+ /* Free expired nodes */
+ while ((unode = LIST_FIRST(&oldlist))) {
+ LIST_REMOVE(unode, hash_link);
+ FREE(unode, M_TEMP);
+ }
+}
+
+/*
+ * Maps errno values to nfs error numbers.
+ * Use NFSERR_IO as the catch all for ones not specifically defined in
+ * RFC 1094.
+ */
+static u_char nfsrv_v2errmap[] = {
+ NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
+ NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
+ NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
+};
+
+/*
+ * Maps errno values to nfs error numbers.
+ * Although it is not obvious whether or not NFS clients really care if
+ * a returned error value is in the specified list for the procedure, the
+ * safest thing to do is filter them appropriately. For Version 2, the
+ * X/Open XNFS document is the only specification that defines error values
+ * for each RPC (The RFC simply lists all possible error values for all RPCs),
+ * so I have decided to not do this for Version 2.
+ * The first entry is the default error return and the rest are the valid
+ * errors for that RPC in increasing numeric order.
+ */
+static short nfsv3err_null[] = {
+ 0,
+ 0,
+};
+
+static short nfsv3err_getattr[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_setattr[] = {
+ NFSERR_IO,
+ NFSERR_PERM,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOT_SYNC,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_lookup[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_NAMETOL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_access[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_readlink[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_read[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_NXIO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_write[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_FBIG,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_create[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_mkdir[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_symlink[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_mknod[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_BADTYPE,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_remove[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_rmdir[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_INVAL,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_NOTEMPTY,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_rename[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_XDEV,
+ NFSERR_NOTDIR,
+ NFSERR_ISDIR,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_MLINK,
+ NFSERR_NAMETOL,
+ NFSERR_NOTEMPTY,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_link[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_XDEV,
+ NFSERR_NOTDIR,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_MLINK,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_readdir[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_BAD_COOKIE,
+ NFSERR_TOOSMALL,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_readdirplus[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_BAD_COOKIE,
+ NFSERR_NOTSUPP,
+ NFSERR_TOOSMALL,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_fsstat[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_fsinfo[] = {
+ NFSERR_STALE,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_pathconf[] = {
+ NFSERR_STALE,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_commit[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short *nfsrv_v3errmap[] = {
+ nfsv3err_null,
+ nfsv3err_getattr,
+ nfsv3err_setattr,
+ nfsv3err_lookup,
+ nfsv3err_access,
+ nfsv3err_readlink,
+ nfsv3err_read,
+ nfsv3err_write,
+ nfsv3err_create,
+ nfsv3err_mkdir,
+ nfsv3err_symlink,
+ nfsv3err_mknod,
+ nfsv3err_remove,
+ nfsv3err_rmdir,
+ nfsv3err_rename,
+ nfsv3err_link,
+ nfsv3err_readdir,
+ nfsv3err_readdirplus,
+ nfsv3err_fsstat,
+ nfsv3err_fsinfo,
+ nfsv3err_pathconf,
+ nfsv3err_commit,
+};
+
+/*
+ * Map errnos to NFS error numbers. For Version 3 also filter out error
+ * numbers not specified for the associated procedure.
+ */
+int
+nfsrv_errmap(struct nfsrv_descript *nd, int err)
+{
+ short *defaulterrp, *errp;
+
+ if (nd->nd_vers == NFS_VER2) {
+ if (err <= (int)sizeof(nfsrv_v2errmap))
+ return ((int)nfsrv_v2errmap[err - 1]);
+ return (NFSERR_IO);
+ }
+ /* NFSv3 */
+ if (nd->nd_procnum > NFSPROC_COMMIT)
+ return (err & 0xffff);
+ errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
+ while (*++errp) {
+ if (*errp == err)
+ return (err);
+ else if (*errp > err)
+ break;
+ }
+ return ((int)*defaulterrp);
+}
+
+#endif /* NFSSERVER */
projects / apple / xnu.git / blobdiff