diff options
Diffstat (limited to 'usr.sbin/amd/amd/nfs_ops.c')
| -rw-r--r-- | usr.sbin/amd/amd/nfs_ops.c | 809 |
1 files changed, 809 insertions, 0 deletions
diff --git a/usr.sbin/amd/amd/nfs_ops.c b/usr.sbin/amd/amd/nfs_ops.c new file mode 100644 index 0000000..bcfd7a5 --- /dev/null +++ b/usr.sbin/amd/amd/nfs_ops.c @@ -0,0 +1,809 @@ +/*- + * Copyright (c) 1990 Jan-Simon Pendry + * Copyright (c) 1990 Imperial College of Science, Technology & Medicine + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry at Imperial College, London. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + * + * $Id: nfs_ops.c,v 5.2.2.2 1992/05/31 16:35:05 jsp Exp $ + */ + +#ifndef lint +static char sccsid[] = "@(#)nfs_ops.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "am.h" +#include <sys/stat.h> + +#ifdef HAS_NFS + +#define NFS +#define NFSCLIENT +#ifdef NFS_3 +typedef nfs_fh fhandle_t; +#endif /* NFS_3 */ +#ifdef NFS_HDR +#include NFS_HDR +#endif /* NFS_HDR */ +#include <sys/mount.h> +#include "mount.h" + +/* + * Network file system + */ + +/* + * Convert from nfsstat to UN*X error code + */ +#define unx_error(e) ((int)(e)) + +/* + * The NFS layer maintains a cache of file handles. + * This is *fundamental* to the implementation and + * also allows quick remounting when a filesystem + * is accessed soon after timing out. + * + * The NFS server layer knows to flush this cache + * when a server goes down so avoiding stale handles. + * + * Each cache entry keeps a hard reference to + * the corresponding server. This ensures that + * the server keepalive information is maintained. + * + * The copy of the sockaddr_in here is taken so + * that the port can be twiddled to talk to mountd + * instead of portmap or the NFS server as used + * elsewhere. + * The port# is flushed if a server goes down. + * The IP address is never flushed - we assume + * that the address of a mounted machine never + * changes. If it does, then you have other + * problems... + */ +typedef struct fh_cache fh_cache; +struct fh_cache { + qelem fh_q; /* List header */ + voidp fh_wchan; /* Wait channel */ + int fh_error; /* Valid data? */ + int fh_id; /* Unique id */ + int fh_cid; /* Callout id */ + struct fhstatus fh_handle; /* Handle on filesystem */ + struct sockaddr_in fh_sin; /* Address of mountd */ + fserver *fh_fs; /* Server holding filesystem */ + char *fh_path; /* Filesystem on host */ +}; + +/* + * FH_TTL is the time a file handle will remain in the cache since + * last being used. If the file handle becomes invalid, then it + * will be flushed anyway. + */ +#define FH_TTL (5 * 60) /* five minutes */ +#define FH_TTL_ERROR (30) /* 30 seconds */ + +static int fh_id = 0; +#define FHID_ALLOC() (++fh_id) +extern qelem fh_head; +qelem fh_head = { &fh_head, &fh_head }; + +static int call_mountd P((fh_cache*, unsigned long, fwd_fun, voidp)); + +AUTH *nfs_auth; + +static fh_cache *find_nfs_fhandle_cache P((voidp idv, int done)); +static fh_cache *find_nfs_fhandle_cache(idv, done) +voidp idv; +int done; +{ + fh_cache *fp, *fp2 = 0; + int id = (int) idv; + + ITER(fp, fh_cache, &fh_head) { + if (fp->fh_id == id) { + fp2 = fp; + break; + } + } + +#ifdef DEBUG + if (fp2) { + dlog("fh cache gives fp %#x, fs %s", fp2, fp2->fh_path); + } else { + dlog("fh cache search failed"); + } +#endif /* DEBUG */ + + if (fp2 && !done) { + fp2->fh_error = ETIMEDOUT; + return 0; + } + + return fp2; +} + +/* + * Called when a filehandle appears + */ +static void got_nfs_fh P((voidp pkt, int len, struct sockaddr_in *sa, + struct sockaddr_in *ia, voidp idv, int done)); +static void got_nfs_fh(pkt, len, sa, ia, idv, done) +voidp pkt; +int len; +struct sockaddr_in *sa, *ia; +voidp idv; +int done; +{ + fh_cache *fp = find_nfs_fhandle_cache(idv, done); + if (fp) { + fp->fh_error = pickup_rpc_reply(pkt, len, (voidp) &fp->fh_handle, xdr_fhstatus); + if (!fp->fh_error) { +#ifdef DEBUG + dlog("got filehandle for %s:%s", fp->fh_fs->fs_host, fp->fh_path); +#endif /* DEBUG */ + /* + * Wakeup anything sleeping on this filehandle + */ + if (fp->fh_wchan) { +#ifdef DEBUG + dlog("Calling wakeup on %#x", fp->fh_wchan); +#endif /* DEBUG */ + wakeup(fp->fh_wchan); + } + } + } +} + +void flush_nfs_fhandle_cache P((fserver *fs)); +void flush_nfs_fhandle_cache(fs) +fserver *fs; +{ + fh_cache *fp; + ITER(fp, fh_cache, &fh_head) { + if (fp->fh_fs == fs || fs == 0) { + fp->fh_sin.sin_port = (u_short) 0; + fp->fh_error = -1; + } + } +} + +static void discard_fh P((fh_cache *fp)); +static void discard_fh(fp) +fh_cache *fp; +{ + rem_que(&fp->fh_q); +#ifdef DEBUG + dlog("Discarding filehandle for %s:%s", fp->fh_fs->fs_host, fp->fh_path); +#endif /* DEBUG */ + free_srvr(fp->fh_fs); + free((voidp) fp->fh_path); + free((voidp) fp); +} + +/* + * Determine the file handle for a node + */ +static int prime_nfs_fhandle_cache P((char *path, fserver *fs, struct fhstatus *fhbuf, voidp wchan)); +static int prime_nfs_fhandle_cache(path, fs, fhbuf, wchan) +char *path; +fserver *fs; +struct fhstatus *fhbuf; +voidp wchan; +{ + fh_cache *fp, *fp_save = 0; + int error; + int reuse_id = FALSE; + +#ifdef DEBUG + dlog("Searching cache for %s:%s", fs->fs_host, path); +#endif /* DEBUG */ + + /* + * First search the cache + */ + ITER(fp, fh_cache, &fh_head) { + if (fs == fp->fh_fs && strcmp(path, fp->fh_path) == 0) { + switch (fp->fh_error) { + case 0: + error = fp->fh_error = unx_error(fp->fh_handle.fhs_status); + if (error == 0) { + if (fhbuf) + bcopy((voidp) &fp->fh_handle, (voidp) fhbuf, + sizeof(fp->fh_handle)); + if (fp->fh_cid) + untimeout(fp->fh_cid); + fp->fh_cid = timeout(FH_TTL, discard_fh, (voidp) fp); + } else if (error == EACCES) { + /* + * Now decode the file handle return code. + */ + plog(XLOG_INFO, "Filehandle denied for \"%s:%s\"", + fs->fs_host, path); + } else { + errno = error; /* XXX */ + plog(XLOG_INFO, "Filehandle error for \"%s:%s\": %m", + fs->fs_host, path); + } + + /* + * The error was returned from the remote mount daemon. + * Policy: this error will be cached for now... + */ + return error; + + case -1: + /* + * Still thinking about it, but we can re-use. + */ + fp_save = fp; + reuse_id = TRUE; + break; + + default: + /* + * Return the error. + * Policy: make sure we recompute if required again + * in case this was caused by a network failure. + * This can thrash mountd's though... If you find + * your mountd going slowly then: + * 1. Add a fork() loop to main. + * 2. Remove the call to innetgr() and don't use + * netgroups, especially if you don't use YP. + */ + error = fp->fh_error; + fp->fh_error = -1; + return error; + } + break; + } + } + + /* + * Not in cache + */ + if (fp_save) { + fp = fp_save; + /* + * Re-use existing slot + */ + untimeout(fp->fh_cid); + free_srvr(fp->fh_fs); + free(fp->fh_path); + } else { + fp = ALLOC(fh_cache); + bzero((voidp) fp, sizeof(*fp)); + ins_que(&fp->fh_q, &fh_head); + } + if (!reuse_id) + fp->fh_id = FHID_ALLOC(); + fp->fh_wchan = wchan; + fp->fh_error = -1; + fp->fh_cid = timeout(FH_TTL, discard_fh, (voidp) fp); + + /* + * If the address has changed then don't try to re-use the + * port information + */ + if (fp->fh_sin.sin_addr.s_addr != fs->fs_ip->sin_addr.s_addr) { + fp->fh_sin = *fs->fs_ip; + fp->fh_sin.sin_port = 0; + } + fp->fh_fs = dup_srvr(fs); + fp->fh_path = strdup(path); + + error = call_mountd(fp, MOUNTPROC_MNT, got_nfs_fh, wchan); + if (error) { + /* + * Local error - cache for a short period + * just to prevent thrashing. + */ + untimeout(fp->fh_cid); + fp->fh_cid = timeout(error < 0 ? 2 * ALLOWED_MOUNT_TIME : FH_TTL_ERROR, + discard_fh, (voidp) fp); + fp->fh_error = error; + } else { + error = fp->fh_error; + } + return error; +} + +int make_nfs_auth P((void)) +{ +#ifdef HAS_NFS_QUALIFIED_NAMES + /* + * From: Chris Metcalf <metcalf@masala.lcs.mit.edu> + * Use hostd, not just hostname. Note that uids + * and gids and the gidlist are type *int* and not the + * system uid_t and gid_t types. + */ + static int group_wheel = 0; + nfs_auth = authunix_create(hostd, 0, 0, 1, &group_wheel); +#else + nfs_auth = authunix_create_default(); +#endif + if (!nfs_auth) + return ENOBUFS; + return 0; +} + +static int call_mountd P((fh_cache *fp, u_long proc, fwd_fun f, voidp wchan)); +static int call_mountd(fp, proc, f, wchan) +fh_cache *fp; +u_long proc; +fwd_fun f; +voidp wchan; +{ + struct rpc_msg mnt_msg; + int len; + char iobuf[8192]; + int error; + + if (!nfs_auth) { + error = make_nfs_auth(); + if (error) + return error; + } + + if (fp->fh_sin.sin_port == 0) { + u_short port; + error = nfs_srvr_port(fp->fh_fs, &port, wchan); + if (error) + return error; + fp->fh_sin.sin_port = port; + } + + rpc_msg_init(&mnt_msg, MOUNTPROG, MOUNTVERS, (unsigned long) 0); + len = make_rpc_packet(iobuf, sizeof(iobuf), proc, + &mnt_msg, (voidp) &fp->fh_path, xdr_nfspath, nfs_auth); + + if (len > 0) { + error = fwd_packet(MK_RPC_XID(RPC_XID_MOUNTD, fp->fh_id), + (voidp) iobuf, len, &fp->fh_sin, &fp->fh_sin, (voidp) fp->fh_id, f); + } else { + error = -len; + } +/* + * It may be the case that we're sending to the wrong MOUNTD port. This + * occurs if mountd is restarted on the server after the port has been + * looked up and stored in the filehandle cache somewhere. The correct + * solution, if we're going to cache port numbers is to catch the ICMP + * port unreachable reply from the server and cause the portmap request + * to be redone. The quick solution here is to invalidate the MOUNTD + * port. + */ + fp->fh_sin.sin_port = 0; + + return error; +} + +/*-------------------------------------------------------------------------*/ + +/* + * NFS needs the local filesystem, remote filesystem + * remote hostname. + * Local filesystem defaults to remote and vice-versa. + */ +static char *nfs_match(fo) +am_opts *fo; +{ + char *xmtab; + if (fo->opt_fs && !fo->opt_rfs) + fo->opt_rfs = fo->opt_fs; + if (!fo->opt_rfs) { + plog(XLOG_USER, "nfs: no remote filesystem specified"); + return FALSE; + } + if (!fo->opt_rhost) { + plog(XLOG_USER, "nfs: no remote host specified"); + return FALSE; + } + /* + * Determine magic cookie to put in mtab + */ + xmtab = (char *) xmalloc(strlen(fo->opt_rhost) + strlen(fo->opt_rfs) + 2); + sprintf(xmtab, "%s:%s", fo->opt_rhost, fo->opt_rfs); +#ifdef DEBUG + dlog("NFS: mounting remote server \"%s\", remote fs \"%s\" on \"%s\"", + fo->opt_rhost, fo->opt_rfs, fo->opt_fs); +#endif /* DEBUG */ + + return xmtab; +} + +/* + * Initialise am structure for nfs + */ +static int nfs_init(mf) +mntfs *mf; +{ + if (!mf->mf_private) { + int error; + struct fhstatus fhs; + + char *colon = strchr(mf->mf_info, ':'); + if (colon == 0) + return ENOENT; + + error = prime_nfs_fhandle_cache(colon+1, mf->mf_server, &fhs, (voidp) mf); + if (!error) { + mf->mf_private = (voidp) ALLOC(fhstatus); + mf->mf_prfree = (void (*)()) free; + bcopy((voidp) &fhs, mf->mf_private, sizeof(fhs)); + } + return error; + } + + return 0; +} + +int mount_nfs_fh P((struct fhstatus *fhp, char *dir, char *fs_name, char *opts, mntfs *mf)); +int mount_nfs_fh(fhp, dir, fs_name, opts, mf) +struct fhstatus *fhp; +char *dir; +char *fs_name; +char *opts; +mntfs *mf; +{ + struct nfs_args nfs_args; + struct mntent mnt; + int retry; + char *colon; + /*char *path;*/ + char host[MAXHOSTNAMELEN + MAXPATHLEN + 2]; + fserver *fs = mf->mf_server; + int flags; + char *xopts; + int error; +#ifdef notdef + unsigned short port; +#endif /* notdef */ + + MTYPE_TYPE type = MOUNT_TYPE_NFS; + + bzero((voidp) &nfs_args, sizeof(nfs_args)); /* Paranoid */ + + /* + * Extract host name to give to kernel + */ + if (!(colon = strchr(fs_name, ':'))) + return ENOENT; +#ifndef NFS_ARGS_NEEDS_PATH + *colon = '\0'; +#endif + strncpy(host, fs_name, sizeof(host)); +#ifndef NFS_ARGS_NEEDS_PATH + *colon = ':'; +#endif /* NFS_ARGS_NEEDS_PATH */ + /*path = colon + 1;*/ + + if (mf->mf_remopts && *mf->mf_remopts && !islocalnet(fs->fs_ip->sin_addr.s_addr)) + xopts = strdup(mf->mf_remopts); + else + xopts = strdup(opts); + + bzero((voidp) &nfs_args, sizeof(nfs_args)); + + mnt.mnt_dir = dir; + mnt.mnt_fsname = fs_name; + mnt.mnt_type = MTAB_TYPE_NFS; + mnt.mnt_opts = xopts; + mnt.mnt_freq = 0; + mnt.mnt_passno = 0; + + retry = hasmntval(&mnt, "retry"); + if (retry <= 0) + retry = 1; /* XXX */ + +/*again:*/ + + /* + * set mount args + */ + NFS_FH_DREF(nfs_args.fh, (NFS_FH_TYPE) fhp->fhstatus_u.fhs_fhandle); + +#ifdef ULTRIX_HACK + nfs_args.optstr = mnt.mnt_opts; +#endif /* ULTRIX_HACK */ + + nfs_args.hostname = host; + nfs_args.flags |= NFSMNT_HOSTNAME; +#ifdef HOSTNAMESZ + /* + * Most kernels have a name length restriction. + */ + if (strlen(host) >= HOSTNAMESZ) + strcpy(host + HOSTNAMESZ - 3, ".."); +#endif /* HOSTNAMESZ */ + + if (nfs_args.rsize = hasmntval(&mnt, "rsize")) + nfs_args.flags |= NFSMNT_RSIZE; + + if (nfs_args.wsize = hasmntval(&mnt, "wsize")) + nfs_args.flags |= NFSMNT_WSIZE; + + if (nfs_args.timeo = hasmntval(&mnt, "timeo")) + nfs_args.flags |= NFSMNT_TIMEO; + + if (nfs_args.retrans = hasmntval(&mnt, "retrans")) + nfs_args.flags |= NFSMNT_RETRANS; + +#ifdef NFSMNT_BIODS + if (nfs_args.biods = hasmntval(&mnt, "biods")) + nfs_args.flags |= NFSMNT_BIODS; + +#endif /* NFSMNT_BIODS */ + +#ifdef NFSMNT_MAXGRPS + if (nfs_args.maxgrouplist = hasmntval(&mnt, "maxgroups")) + nfs_args.flags |= NFSMNT_MAXGRPS; +#endif /* NFSMNT_MAXGRPS */ + +#ifdef notdef +/* + * This isn't supported by the ping algorithm yet. + * In any case, it is all done in nfs_init(). + */ + if (port = hasmntval(&mnt, "port")) + sin.sin_port = htons(port); + else + sin.sin_port = htons(NFS_PORT); /* XXX should use portmapper */ +#endif /* notdef */ + + if (hasmntopt(&mnt, MNTOPT_SOFT) != NULL) + nfs_args.flags |= NFSMNT_SOFT; + +#ifdef NFSMNT_SPONGY + if (hasmntopt(&mnt, "spongy") != NULL) { + nfs_args.flags |= NFSMNT_SPONGY; + if (nfs_args.flags & NFSMNT_SOFT) { + plog(XLOG_USER, "Mount opts soft and spongy are incompatible - soft ignored"); + nfs_args.flags &= ~NFSMNT_SOFT; + } + } +#endif /* MNTOPT_SPONGY */ + +#ifdef MNTOPT_INTR + if (hasmntopt(&mnt, MNTOPT_INTR) != NULL) + nfs_args.flags |= NFSMNT_INT; +#endif /* MNTOPT_INTR */ + +#ifdef MNTOPT_NODEVS + if (hasmntopt(&mnt, MNTOPT_NODEVS) != NULL) + nfs_args.flags |= NFSMNT_NODEVS; +#endif /* MNTOPT_NODEVS */ + +#ifdef MNTOPT_COMPRESS + if (hasmntopt(&mnt, "compress") != NULL) + nfs_args.flags |= NFSMNT_COMPRESS; +#endif /* MNTOPT_COMPRESS */ + +#ifdef MNTOPT_NOCONN + if (hasmntopt(&mnt, "noconn") != NULL) + nfs_args.flags |= NFSMNT_NOCONN; +#endif /* MNTOPT_NOCONN */ + +#ifdef NFSMNT_PGTHRESH + if (nfs_args.pg_thresh = hasmntval(&mnt, "pgthresh")) + nfs_args.flags |= NFSMNT_PGTHRESH; +#endif /* NFSMNT_PGTHRESH */ + + NFS_SA_DREF(nfs_args, fs->fs_ip); + + flags = compute_mount_flags(&mnt); + +#ifdef NFSMNT_NOCTO + if (hasmntopt(&mnt, "nocto") != NULL) + nfs_args.flags |= NFSMNT_NOCTO; +#endif /* NFSMNT_NOCTO */ + +#ifdef HAS_TCP_NFS + if (hasmntopt(&mnt, "tcp") != NULL) + nfs_args.sotype = SOCK_STREAM; +#endif /* HAS_TCP_NFS */ + + +#ifdef ULTRIX_HACK + /* + * Ultrix passes the flags argument as part of the + * mount data structure, rather than using the + * flags argument to the system call. This is + * confusing... + */ + if (!(nfs_args.flags & NFSMNT_PGTHRESH)) { + nfs_args.pg_thresh = 64; /* 64k - XXX */ + nfs_args.flags |= NFSMNT_PGTHRESH; + } + nfs_args.gfs_flags = flags; + flags &= M_RDONLY; + if (flags & M_RDONLY) + nfs_args.flags |= NFSMNT_RONLY; +#endif /* ULTRIX_HACK */ + + error = mount_fs(&mnt, flags, (caddr_t) &nfs_args, retry, type); + free(xopts); + return error; +} + +static int mount_nfs(dir, fs_name, opts, mf) +char *dir; +char *fs_name; +char *opts; +mntfs *mf; +{ +#ifdef notdef + int error; + struct fhstatus fhs; + char *colon; + + if (!(colon = strchr(fs_name, ':'))) + return ENOENT; + +#ifdef DEBUG + dlog("locating fhandle for %s", fs_name); +#endif /* DEBUG */ + error = prime_nfs_fhandle_cache(colon+1, mf->mf_server, &fhs, (voidp) 0); + + if (error) + return error; + + return mount_nfs_fh(&fhs, dir, fs_name, opts, mf); +#endif + if (!mf->mf_private) { + plog(XLOG_ERROR, "Missing filehandle for %s", fs_name); + return EINVAL; + } + + return mount_nfs_fh((struct fhstatus *) mf->mf_private, dir, fs_name, opts, mf); +} + +static int nfs_fmount(mf) +mntfs *mf; +{ + int error; + + error = mount_nfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, mf); + +#ifdef DEBUG + if (error) { + errno = error; + dlog("mount_nfs: %m"); + } +#endif /* DEBUG */ + return error; +} + +static int nfs_fumount(mf) +mntfs *mf; +{ + int error = UMOUNT_FS(mf->mf_mount); + if (error) + return error; + + return 0; +} + +static void nfs_umounted(mp) +am_node *mp; +{ +#ifdef INFORM_MOUNTD + /* + * Don't bother to inform remote mountd + * that we are finished. Until a full + * track of filehandles is maintained + * the mountd unmount callback cannot + * be done correctly anyway... + */ + + mntfs *mf = mp->am_mnt; + fserver *fs; + char *colon, *path; + + if (mf->mf_error || mf->mf_refc > 1) + return; + + fs = mf->mf_server; + + /* + * Call the mount daemon on the server to + * announce that we are not using the fs any more. + * + * This is *wrong*. The mountd should be called + * when the fhandle is flushed from the cache, and + * a reference held to the cached entry while the + * fs is mounted... + */ + colon = path = strchr(mf->mf_info, ':'); + if (fs && colon) { + fh_cache f; +#ifdef DEBUG + dlog("calling mountd for %s", mf->mf_info); +#endif /* DEBUG */ + *path++ = '\0'; + f.fh_path = path; + f.fh_sin = *fs->fs_ip; + f.fh_sin.sin_port = (u_short) 0; + f.fh_fs = fs; + f.fh_id = 0; + f.fh_error = 0; + (void) prime_nfs_fhandle_cache(colon+1, mf->mf_server, (struct fhstatus *) 0, (voidp) mf); + (void) call_mountd(&f, MOUNTPROC_UMNT, (fwd_fun) 0, (voidp) 0); + *colon = ':'; + } +#endif /* INFORM_MOUNTD */ + +#ifdef KICK_KERNEL + /* This should go into the mainline code, not in nfs_ops... */ + + /* + * Run lstat over the underlying directory in + * case this was a direct mount. This will + * get the kernel back in sync with reality. + */ + if (mp->am_parent && mp->am_parent->am_path && + STREQ(mp->am_parent->am_mnt->mf_ops->fs_type, "direct")) { + struct stat stb; + int pid; + if ((pid = background()) == 0) { + if (lstat(mp->am_parent->am_path, &stb) < 0) { + plog(XLOG_ERROR, "lstat(%s) after unmount: %m", mp->am_parent->am_path); +#ifdef DEBUG + } else { + dlog("hack lstat(%s): ok", mp->am_parent->am_path); +#endif /* DEBUG */ + } + _exit(0); + } + } +#endif /* KICK_KERNEL */ +} + +/* + * Network file system + */ +am_ops nfs_ops = { + "nfs", + nfs_match, + nfs_init, + auto_fmount, + nfs_fmount, + auto_fumount, + nfs_fumount, + efs_lookuppn, + efs_readdir, + 0, /* nfs_readlink */ + 0, /* nfs_mounted */ + nfs_umounted, + find_nfs_srvr, + FS_MKMNT|FS_BACKGROUND|FS_AMQINFO +}; + +#endif /* HAS_NFS */ |
