/* $NetBSD: autofs_solaris_v2_v3.c,v 1.1.1.3 2015/01/17 16:34:16 christos Exp $ */
/*
* Copyright (c) 1999-2003 Ion Badulescu
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 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. 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.
*
*
* File: am-utils/conf/autofs/autofs_solaris_v2_v3.c
*
*/
/*
* Automounter filesystem
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>
/*
* MACROS:
*/
#ifndef AUTOFS_NULL
# define AUTOFS_NULL NULLPROC
#endif /* not AUTOFS_NULL */
/*
* STRUCTURES:
*/
struct amd_rddirres {
enum autofs_res rd_status;
u_long rd_bufsize;
nfsdirlist rd_dl;
};
typedef struct amd_rddirres amd_rddirres;
/*
* VARIABLES:
*/
SVCXPRT *autofs_xprt = NULL;
/* forward declarations */
bool_t xdr_umntrequest(XDR *xdrs, umntrequest *objp);
bool_t xdr_umntres(XDR *xdrs, umntres *objp);
bool_t xdr_autofs_lookupargs(XDR *xdrs, autofs_lookupargs *objp);
bool_t xdr_autofs_mountres(XDR *xdrs, autofs_mountres *objp);
bool_t xdr_autofs_lookupres(XDR *xdrs, autofs_lookupres *objp);
bool_t xdr_autofs_rddirargs(XDR *xdrs, autofs_rddirargs *objp);
static bool_t xdr_amd_rddirres(XDR *xdrs, amd_rddirres *objp);
/*
* These exist only in the AutoFS V2 protocol.
*/
#ifdef AUTOFS_POSTUNMOUNT
bool_t xdr_postumntreq(XDR *xdrs, postumntreq *objp);
bool_t xdr_postumntres(XDR *xdrs, postumntres *objp);
bool_t xdr_postmountreq(XDR *xdrs, postmountreq *objp);
bool_t xdr_postmountres(XDR *xdrs, postmountres *objp);
#endif /* AUTOFS_POSTUMOUNT */
/*
* AUTOFS XDR FUNCTIONS:
*/
bool_t
xdr_autofs_stat(XDR *xdrs, autofs_stat *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_autofs_action(XDR *xdrs, autofs_action *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_linka(XDR *xdrs, linka *objp)
{
if (!xdr_string(xdrs, &objp->dir, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->link, AUTOFS_MAXPATHLEN))
return (FALSE);
return (TRUE);
}
bool_t
xdr_autofs_netbuf(XDR *xdrs, struct netbuf *objp)
{
bool_t dummy;
if (!xdr_u_long(xdrs, (u_long *) &objp->maxlen))
return (FALSE);
dummy = xdr_bytes(xdrs, (char **)&(objp->buf),
(u_int *)&(objp->len), objp->maxlen);
return (dummy);
}
bool_t
xdr_autofs_args(XDR *xdrs, autofs_args *objp)
{
if (!xdr_autofs_netbuf(xdrs, &objp->addr))
return (FALSE);
if (!xdr_string(xdrs, &objp->path, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->opts, AUTOFS_MAXOPTSLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->map, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->subdir, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->key, AUTOFS_MAXCOMPONENTLEN))
return (FALSE);
if (!xdr_int(xdrs, &objp->mount_to))
return (FALSE);
if (!xdr_int(xdrs, &objp->rpc_to))
return (FALSE);
if (!xdr_int(xdrs, &objp->direct))
return (FALSE);
return (TRUE);
}
bool_t
xdr_mounta(XDR *xdrs, struct mounta *objp)
{
if (!xdr_string(xdrs, &objp->spec, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->dir, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_int(xdrs, &objp->flags))
return (FALSE);
if (!xdr_string(xdrs, &objp->fstype, AUTOFS_MAXCOMPONENTLEN))
return (FALSE);
if (!xdr_pointer(xdrs, (char **)&objp->dataptr, sizeof(autofs_args),
(XDRPROC_T_TYPE) xdr_autofs_args))
return (FALSE);
if (!xdr_int(xdrs, &objp->datalen))
return (FALSE);
return (TRUE);
}
bool_t
xdr_action_list_entry(XDR *xdrs, action_list_entry *objp)
{
if (!xdr_autofs_action(xdrs, &objp->action))
return (FALSE);
switch (objp->action) {
case AUTOFS_MOUNT_RQ:
if (!xdr_mounta(xdrs, &objp->action_list_entry_u.mounta))
return (FALSE);
break;
case AUTOFS_LINK_RQ:
if (!xdr_linka(xdrs, &objp->action_list_entry_u.linka))
return (FALSE);
break;
default:
break;
}
return (TRUE);
}
bool_t
xdr_action_list(XDR *xdrs, action_list *objp)
{
if (!xdr_action_list_entry(xdrs, &objp->action))
return (FALSE);
if (!xdr_pointer(xdrs, (char **)&objp->next, sizeof(action_list),
(XDRPROC_T_TYPE) xdr_action_list))
return (FALSE);
return (TRUE);
}
bool_t
xdr_umntrequest(XDR *xdrs, umntrequest *objp)
{
if (amuDebug(D_XDRTRACE))
plog(XLOG_DEBUG, "xdr_umntrequest:");
if (!xdr_bool_t(xdrs, &objp->isdirect))
return (FALSE);
#ifdef HAVE_STRUCT_UMNTREQUEST_DEVID
if (!xdr_dev_t(xdrs, &objp->devid))
return (FALSE);
if (!xdr_dev_t(xdrs, &objp->rdevid))
return (FALSE);
#else /* not HAVE_STRUCT_UMNTREQUEST_DEVID */
if (!xdr_string(xdrs, &objp->mntresource, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->mntpnt, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->fstype, AUTOFS_MAXCOMPONENTLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->mntopts, AUTOFS_MAXOPTSLEN))
return (FALSE);
#endif /* not HAVE_STRUCT_UMNTREQUEST_DEVID */
if (!xdr_pointer(xdrs, (char **) &objp->next, sizeof(umntrequest),
(XDRPROC_T_TYPE) xdr_umntrequest))
return (FALSE);
return (TRUE);
}
bool_t
xdr_umntres(XDR *xdrs, umntres *objp)
{
if (amuDebug(D_XDRTRACE))
plog(XLOG_DEBUG, "xdr_mntres:");
if (!xdr_int(xdrs, &objp->status))
return (FALSE);
return (TRUE);
}
/*
* These exist only in the AutoFS V2 protocol.
*/
#ifdef AUTOFS_POSTUNMOUNT
bool_t
xdr_postumntreq(XDR *xdrs, postumntreq *objp)
{
if (!xdr_dev_t(xdrs, &objp->devid))
return (FALSE);
if (!xdr_dev_t(xdrs, &objp->rdevid))
return (FALSE);
if (!xdr_pointer(xdrs, (char **)&objp->next,
sizeof(struct postumntreq),
(XDRPROC_T_TYPE) xdr_postumntreq))
return (FALSE);
return (TRUE);
}
bool_t
xdr_postumntres(XDR *xdrs, postumntres *objp)
{
if (!xdr_int(xdrs, &objp->status))
return (FALSE);
return (TRUE);
}
bool_t
xdr_postmountreq(XDR *xdrs, postmountreq *objp)
{
if (!xdr_string(xdrs, &objp->special, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->mountp, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->fstype, AUTOFS_MAXCOMPONENTLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->mntopts, AUTOFS_MAXOPTSLEN))
return (FALSE);
if (!xdr_dev_t(xdrs, &objp->devid))
return (FALSE);
return (TRUE);
}
bool_t
xdr_postmountres(XDR *xdrs, postmountres *objp)
{
if (!xdr_int(xdrs, &objp->status))
return (FALSE);
return (TRUE);
}
#endif /* AUTOFS_POSTUNMOUNT */
bool_t
xdr_autofs_res(XDR *xdrs, autofs_res *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_autofs_lookupargs(XDR *xdrs, autofs_lookupargs *objp)
{
if (amuDebug(D_XDRTRACE))
plog(XLOG_DEBUG, "xdr_autofs_lookupargs:");
if (!xdr_string(xdrs, &objp->map, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->path, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->name, AUTOFS_MAXCOMPONENTLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->subdir, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_string(xdrs, &objp->opts, AUTOFS_MAXOPTSLEN))
return (FALSE);
if (!xdr_bool_t(xdrs, &objp->isdirect))
return (FALSE);
return (TRUE);
}
bool_t
xdr_mount_result_type(XDR *xdrs, mount_result_type *objp)
{
if (!xdr_autofs_stat(xdrs, &objp->status))
return (FALSE);
switch (objp->status) {
case AUTOFS_ACTION:
if (!xdr_pointer(xdrs,
(char **)&objp->mount_result_type_u.list,
sizeof(action_list), (XDRPROC_T_TYPE) xdr_action_list))
return (FALSE);
break;
case AUTOFS_DONE:
if (!xdr_int(xdrs, &objp->mount_result_type_u.error))
return (FALSE);
break;
}
return (TRUE);
}
bool_t
xdr_autofs_mountres(XDR *xdrs, autofs_mountres *objp)
{
if (amuDebug(D_XDRTRACE))
plog(XLOG_DEBUG, "xdr_mntres:");
if (!xdr_mount_result_type(xdrs, &objp->mr_type))
return (FALSE);
if (!xdr_int(xdrs, &objp->mr_verbose))
return (FALSE);
return (TRUE);
}
bool_t
xdr_lookup_result_type(XDR *xdrs, lookup_result_type *objp)
{
if (!xdr_autofs_action(xdrs, &objp->action))
return (FALSE);
switch (objp->action) {
case AUTOFS_LINK_RQ:
if (!xdr_linka(xdrs, &objp->lookup_result_type_u.lt_linka))
return (FALSE);
break;
default:
break;
}
return (TRUE);
}
bool_t
xdr_autofs_lookupres(XDR *xdrs, autofs_lookupres *objp)
{
if (!xdr_autofs_res(xdrs, &objp->lu_res))
return (FALSE);
if (!xdr_lookup_result_type(xdrs, &objp->lu_type))
return (FALSE);
if (!xdr_int(xdrs, &objp->lu_verbose))
return (FALSE);
return (TRUE);
}
bool_t
xdr_autofs_rddirargs(XDR *xdrs, autofs_rddirargs *objp)
{
if (!xdr_string(xdrs, &objp->rda_map, AUTOFS_MAXPATHLEN))
return (FALSE);
if (!xdr_u_int(xdrs, (u_int *) &objp->rda_offset))
return (FALSE);
if (!xdr_u_int(xdrs, (u_int *) &objp->rda_count))
return (FALSE);
return (TRUE);
}
/*
* ENCODE ONLY
*
* Solaris automountd uses struct autofsrddir to pass the results.
* We use the traditional nfsreaddirres and do the conversion ourselves.
*/
static bool_t
xdr_amd_putrddirres(XDR *xdrs, nfsdirlist *dp, ulong reqsize)
{
nfsentry *ep;
char *name;
u_int namlen;
bool_t true = TRUE;
bool_t false = FALSE;
int entrysz;
int tofit;
int bufsize;
u_long ino, off;
bufsize = 1 * BYTES_PER_XDR_UNIT;
for (ep = dp->dl_entries; ep; ep = ep->ne_nextentry) {
name = ep->ne_name;
namlen = strlen(name);
ino = (u_long) ep->ne_fileid;
off = (u_long) ep->ne_cookie + AUTOFS_DAEMONCOOKIE;
entrysz = (1 + 1 + 1 + 1) * BYTES_PER_XDR_UNIT +
roundup(namlen, BYTES_PER_XDR_UNIT);
tofit = entrysz + 2 * BYTES_PER_XDR_UNIT;
if (bufsize + tofit > reqsize) {
dp->dl_eof = FALSE;
break;
}
if (!xdr_bool(xdrs, &true) ||
!xdr_u_long(xdrs, &ino) ||
!xdr_bytes(xdrs, &name, &namlen, AUTOFS_MAXPATHLEN) ||
!xdr_u_long(xdrs, &off)) {
return (FALSE);
}
bufsize += entrysz;
}
if (!xdr_bool(xdrs, &false)) {
return (FALSE);
}
if (!xdr_bool(xdrs, &dp->dl_eof)) {
return (FALSE);
}
return (TRUE);
}
static bool_t
xdr_amd_rddirres(XDR *xdrs, amd_rddirres *objp)
{
if (!xdr_enum(xdrs, (enum_t *)&objp->rd_status))
return (FALSE);
if (objp->rd_status != AUTOFS_OK)
return (TRUE);
return (xdr_amd_putrddirres(xdrs, &objp->rd_dl, objp->rd_bufsize));
}
/*
* AUTOFS RPC methods
*/
static int
autofs_lookup_2_req(autofs_lookupargs *m,
autofs_lookupres *res,
struct authunix_parms *cred,
SVCXPRT *transp)
{
int err;
am_node *mp, *new_mp;
mntfs *mf;
dlog("LOOKUP REQUEST: name=%s[%s] map=%s opts=%s path=%s direct=%d",
m->name, m->subdir, m->map, m->opts,
m->path, m->isdirect);
/* find the effective uid/gid from RPC request */
xsnprintf(opt_uid, sizeof(uid_str), "%d", (int) cred->aup_uid);
xsnprintf(opt_gid, sizeof(gid_str), "%d", (int) cred->aup_gid);
mp = find_ap(m->path);
if (!mp) {
plog(XLOG_ERROR, "map %s not found", m->path);
err = AUTOFS_NOENT;
goto out;
}
mf = mp->am_al->al_mnt;
new_mp = mf->mf_ops->lookup_child(mp, m->name, &err, VLOOK_LOOKUP);
if (!new_mp) {
err = AUTOFS_NOENT;
goto out;
}
if (err == 0) {
plog(XLOG_ERROR, "autofs requests to mount an already mounted node???");
} else {
free_map(new_mp);
}
err = AUTOFS_OK;
res->lu_type.action = AUTOFS_NONE;
out:
res->lu_res = err;
res->lu_verbose = 1;
dlog("LOOKUP REPLY: status=%d", res->lu_res);
return 0;
}
static void
autofs_lookup_2_free(autofs_lookupres *res)
{
struct linka link;
if ((res->lu_res == AUTOFS_OK) &&
(res->lu_type.action == AUTOFS_LINK_RQ)) {
/*
* Free link information
*/
link = res->lu_type.lookup_result_type_u.lt_linka;
if (link.dir)
XFREE(link.dir);
if (link.link)
XFREE(link.link);
}
}
static int
autofs_mount_2_req(autofs_lookupargs *m,
autofs_mountres *res,
struct authunix_parms *cred,
SVCXPRT *transp)
{
int err = AUTOFS_OK;
am_node *mp, *new_mp;
mntfs *mf;
dlog("MOUNT REQUEST: name=%s[%s] map=%s opts=%s path=%s direct=%d",
m->name, m->subdir, m->map, m->opts,
m->path, m->isdirect);
/* find the effective uid/gid from RPC request */
xsnprintf(opt_uid, sizeof(uid_str), "%d", (int) cred->aup_uid);
xsnprintf(opt_gid, sizeof(gid_str), "%d", (int) cred->aup_gid);
mp = find_ap(m->path);
if (!mp) {
plog(XLOG_ERROR, "map %s not found", m->path);
res->mr_type.status = AUTOFS_DONE;
res->mr_type.mount_result_type_u.error = AUTOFS_NOENT;
goto out;
}
mf = mp->am_al->al_mnt;
new_mp = mf->mf_ops->lookup_child(mp, m->name + m->isdirect, &err, VLOOK_CREATE);
if (new_mp && err < 0) {
/* new_mp->am_transp = transp; */
new_mp = mf->mf_ops->mount_child(new_mp, &err);
}
if (new_mp == NULL) {
if (err < 0) {
/* we're working on it */
amd_stats.d_drops++;
return 1;
}
res->mr_type.status = AUTOFS_DONE;
res->mr_type.mount_result_type_u.error = AUTOFS_NOENT;
goto out;
}
if (gopt.flags & CFM_AUTOFS_USE_LOFS ||
new_mp->am_al->al_mnt->mf_flags & MFF_ON_AUTOFS) {
res->mr_type.status = AUTOFS_DONE;
res->mr_type.mount_result_type_u.error = AUTOFS_OK;
} else {
struct action_list *list = malloc(sizeof(struct action_list));
char *target;
if (new_mp->am_link)
target = new_mp->am_link;
else
target = new_mp->am_al->al_mnt->mf_mount;
list->action.action = AUTOFS_LINK_RQ;
list->action.action_list_entry_u.linka.dir = xstrdup(new_mp->am_name);
list->action.action_list_entry_u.linka.link = xstrdup(target);
list->next = NULL;
res->mr_type.status = AUTOFS_ACTION;
res->mr_type.mount_result_type_u.list = list;
}
out:
res->mr_verbose = 1;
switch (res->mr_type.status) {
case AUTOFS_ACTION:
dlog("MOUNT REPLY: status=%d, AUTOFS_ACTION", err);
break;
case AUTOFS_DONE:
dlog("MOUNT REPLY: status=%d, AUTOFS_DONE", err);
break;
default:
dlog("MOUNT REPLY: status=%d, UNKNOWN(%d)", err, res->mr_type.status);
}
if (err) {
if (m->isdirect) {
/* direct mount */
plog(XLOG_ERROR, "mount of %s failed", m->path);
} else {
/* indirect mount */
plog(XLOG_ERROR, "mount of %s/%s failed", m->path, m->name);
}
}
return 0;
}
static void
autofs_mount_2_free(struct autofs_mountres *res)
{
if (res->mr_type.status == AUTOFS_ACTION &&
res->mr_type.mount_result_type_u.list != NULL) {
autofs_action action;
dlog("freeing action list");
action = res->mr_type.mount_result_type_u.list->action.action;
if (action == AUTOFS_LINK_RQ) {
/*
* Free link information
*/
struct linka *link;
link = &(res->mr_type.mount_result_type_u.list->action.action_list_entry_u.linka);
if (link->dir)
XFREE(link->dir);
if (link->link)
XFREE(link->link);
} else if (action == AUTOFS_MOUNT_RQ) {
struct mounta *mnt;
mnt = &(res->mr_type.mount_result_type_u.list->action.action_list_entry_u.mounta);
if (mnt->spec)
XFREE(mnt->spec);
if (mnt->dir)
XFREE(mnt->dir);
if (mnt->fstype)
XFREE(mnt->fstype);
if (mnt->dataptr)
XFREE(mnt->dataptr);
#ifdef HAVE_MOUNTA_OPTPTR
if (mnt->optptr)
XFREE(mnt->optptr);
#endif /* HAVE_MOUNTA_OPTPTR */
}
XFREE(res->mr_type.mount_result_type_u.list);
}
}
static int
autofs_unmount_2_req(umntrequest *ul,
umntres *res,
struct authunix_parms *cred,
SVCXPRT *transp)
{
int mapno, err;
am_node *mp = NULL;
#ifdef HAVE_STRUCT_UMNTREQUEST_DEVID
dlog("UNMOUNT REQUEST: dev=%lx rdev=%lx %s",
(u_long) ul->devid,
(u_long) ul->rdevid,
ul->isdirect ? "direct" : "indirect");
#else /* not HAVE_STRUCT_UMNTREQUEST_DEVID */
dlog("UNMOUNT REQUEST: mntresource='%s' mntpnt='%s' fstype='%s' mntopts='%s' %s",
ul->mntresource,
ul->mntpnt,
ul->fstype,
ul->mntopts,
ul->isdirect ? "direct" : "indirect");
#endif /* not HAVE_STRUCT_UMNTREQUEST_DEVID */
/* by default, and if not found, succeed */
res->status = 0;
#ifdef HAVE_STRUCT_UMNTREQUEST_DEVID
for (mp = get_first_exported_ap(&mapno);
mp;
mp = get_next_exported_ap(&mapno)) {
if (mp->am_dev == ul->devid &&
mp->am_rdev == ul->rdevid)
break;
}
#else /* not HAVE_STRUCT_UMNTREQUEST_DEVID */
mp = find_ap(ul->mntpnt);
#endif /* not HAVE_STRUCT_UMNTREQUEST_DEVID */
if (mp) {
/* save RPC context */
if (!mp->am_transp && transp) {
mp->am_transp = (SVCXPRT *) xmalloc(sizeof(SVCXPRT));
*(mp->am_transp) = *transp;
}
mapno = mp->am_mapno;
err = unmount_mp(mp);
if (err)
/* backgrounded, don't reply yet */
return 1;
if (get_exported_ap(mapno))
/* unmounting failed, tell the kernel */
res->status = 1;
}
dlog("UNMOUNT REPLY: status=%d", res->status);
return 0;
}
/*
* These exist only in the AutoFS V2 protocol.
*/
#ifdef AUTOFS_POSTUNMOUNT
/* XXX not implemented */
static int
autofs_postunmount_2_req(postumntreq *req,
postumntres *res,
struct authunix_parms *cred,
SVCXPRT *transp)
{
postumntreq *ul = req;
dlog("POSTUNMOUNT REQUEST: dev=%lx rdev=%lx",
(u_long) ul->devid,
(u_long) ul->rdevid);
/* succeed unconditionally */
res->status = 0;
dlog("POSTUNMOUNT REPLY: status=%d", res->status);
return 0;
}
/* XXX not implemented */
static int
autofs_postmount_2_req(postmountreq *req,
postmountres *res,
struct authunix_parms *cred,
SVCXPRT *transp)
{
dlog("POSTMOUNT REQUEST: %s\tdev=%lx\tspecial=%s %s",
req->mountp, (u_long) req->devid, req->special, req->mntopts);
/* succeed unconditionally */
res->status = 0;
dlog("POSTMOUNT REPLY: status=%d", res->status);
return 0;
}
#endif /* AUTOFS_POSTUNMOUNT */
static int
autofs_readdir_2_req(struct autofs_rddirargs *req,
struct amd_rddirres *res,
struct authunix_parms *cred,
SVCXPRT *transp)
{
am_node *mp;
int err;
static nfsentry e_res[MAX_READDIR_ENTRIES];
dlog("READDIR REQUEST: %s @ %d",
req->rda_map, (int) req->rda_offset);
mp = find_ap(req->rda_map);
if (!mp) {
plog(XLOG_ERROR, "map %s not found", req->rda_map);
res->rd_status = AUTOFS_NOENT;
goto out;
}
mp->am_stats.s_readdir++;
req->rda_offset -= AUTOFS_DAEMONCOOKIE;
err = mp->am_al->al_mnt->mf_ops->readdir(mp, (char *)&req->rda_offset,
&res->rd_dl, e_res, req->rda_count);
if (err) {
res->rd_status = AUTOFS_ECOMM;
goto out;
}
res->rd_status = AUTOFS_OK;
res->rd_bufsize = req->rda_count;
out:
dlog("READDIR REPLY: status=%d", res->rd_status);
return 0;
}
/****************************************************************************/
/* autofs program dispatcher */
static void
autofs_program_2(struct svc_req *rqstp, SVCXPRT *transp)
{
union {
autofs_lookupargs autofs_mount_2_arg;
autofs_lookupargs autofs_lookup_2_arg;
umntrequest autofs_umount_2_arg;
autofs_rddirargs autofs_readdir_2_arg;
#ifdef AUTOFS_POSTUNMOUNT
postmountreq autofs_postmount_2_arg;
postumntreq autofs_postumnt_2_arg;
#endif /* AUTOFS_POSTUNMOUNT */
} argument;
union {
autofs_mountres mount_res;
autofs_lookupres lookup_res;
umntres umount_res;
amd_rddirres readdir_res;
#ifdef AUTOFS_POSTUNMOUNT
postumntres postumnt_res;
postmountres postmnt_res;
#endif /* AUTOFS_POSTUNMOUNT */
} result;
int ret;
bool_t (*xdr_argument)();
bool_t (*xdr_result)();
int (*local)();
void (*local_free)() = NULL;
current_transp = transp;
switch (rqstp->rq_proc) {
case AUTOFS_NULL:
svc_sendreply(transp,
(XDRPROC_T_TYPE) xdr_void,
(SVC_IN_ARG_TYPE) NULL);
return;
case AUTOFS_LOOKUP:
xdr_argument = xdr_autofs_lookupargs;
xdr_result = xdr_autofs_lookupres;
local = autofs_lookup_2_req;
local_free = autofs_lookup_2_free;
break;
case AUTOFS_MOUNT:
xdr_argument = xdr_autofs_lookupargs;
xdr_result = xdr_autofs_mountres;
local = autofs_mount_2_req;
local_free = autofs_mount_2_free;
break;
case AUTOFS_UNMOUNT:
xdr_argument = xdr_umntrequest;
xdr_result = xdr_umntres;
local = autofs_unmount_2_req;
break;
/*
* These exist only in the AutoFS V2 protocol.
*/
#ifdef AUTOFS_POSTUNMOUNT
case AUTOFS_POSTUNMOUNT:
xdr_argument = xdr_postumntreq;
xdr_result = xdr_postumntres;
local = autofs_postunmount_2_req;
break;
case AUTOFS_POSTMOUNT:
xdr_argument = xdr_postmountreq;
xdr_result = xdr_postmountres;
local = autofs_postmount_2_req;
break;
#endif /* AUTOFS_POSTUNMOUNT */
case AUTOFS_READDIR:
xdr_argument = xdr_autofs_rddirargs;
xdr_result = xdr_amd_rddirres;
local = autofs_readdir_2_req;
break;
default:
svcerr_noproc(transp);
return;
}
memset((char *) &argument, 0, sizeof(argument));
if (!svc_getargs(transp,
(XDRPROC_T_TYPE) xdr_argument,
(SVC_IN_ARG_TYPE) &argument)) {
plog(XLOG_ERROR, "AUTOFS xdr decode failed for %d %d %d",
(int) rqstp->rq_prog, (int) rqstp->rq_vers, (int) rqstp->rq_proc);
svcerr_decode(transp);
return;
}
memset((char *)&result, 0, sizeof(result));
ret = (*local) (&argument, &result, rqstp->rq_clntcred, transp);
current_transp = NULL;
/* send reply only if the RPC method returned 0 */
if (!ret) {
if (!svc_sendreply(transp,
(XDRPROC_T_TYPE) xdr_result,
(SVC_IN_ARG_TYPE) &result)) {
svcerr_systemerr(transp);
}
}
if (!svc_freeargs(transp,
(XDRPROC_T_TYPE) xdr_argument,
(SVC_IN_ARG_TYPE) &argument)) {
plog(XLOG_FATAL, "unable to free rpc arguments in autofs_program_2");
}
if (local_free)
(*local_free)(&result);
}
int
autofs_get_fh(am_node *mp)
{
autofs_fh_t *fh;
char buf[MAXHOSTNAMELEN];
mntfs *mf = mp->am_al->al_mnt;
struct utsname utsname;
plog(XLOG_DEBUG, "autofs_get_fh for %s", mp->am_path);
fh = ALLOC(autofs_fh_t);
memset((voidp) fh, 0, sizeof(autofs_fh_t)); /* Paranoid */
/*
* SET MOUNT ARGS
*/
if (uname(&utsname) < 0) {
xstrlcpy(buf, "localhost.autofs", sizeof(buf));
} else {
xstrlcpy(buf, utsname.nodename, sizeof(buf));
xstrlcat(buf, ".autofs", sizeof(buf));
}
#ifdef HAVE_AUTOFS_ARGS_T_ADDR
fh->addr.buf = xstrdup(buf);
fh->addr.len = fh->addr.maxlen = strlen(buf);
#endif /* HAVE_AUTOFS_ARGS_T_ADDR */
fh->direct = ((mf->mf_ops->autofs_fs_flags & FS_DIRECT) == FS_DIRECT);
fh->rpc_to = 1; /* XXX: arbitrary */
fh->mount_to = mp->am_timeo;
fh->path = mp->am_path;
fh->opts = ""; /* XXX: arbitrary */
fh->map = mp->am_path; /* this is what we get back in readdir */
fh->subdir = "";
if (fh->direct)
fh->key = mp->am_name;
else
fh->key = "";
mp->am_autofs_fh = fh;
return 0;
}
void
autofs_mounted(am_node *mp)
{
/* We don't want any timeouts on autofs nodes */
mp->am_autofs_ttl = NEVER;
}
void
autofs_release_fh(am_node *mp)
{
autofs_fh_t *fh = mp->am_autofs_fh;
#ifdef HAVE_AUTOFS_ARGS_T_ADDR
XFREE(fh->addr.buf);
#endif /* HAVE_AUTOFS_ARGS_T_ADDR */
XFREE(fh);
mp->am_autofs_fh = NULL;
}
void
autofs_get_mp(am_node *mp)
{
/* nothing to do */
}
void
autofs_release_mp(am_node *mp)
{
/* nothing to do */
}
void
autofs_add_fdset(fd_set *readfds)
{
/* nothing to do */
}
int
autofs_handle_fdset(fd_set *readfds, int nsel)
{
/* nothing to do */
return nsel;
}
/*
* Create the autofs service for amd
*/
int
create_autofs_service(void)
{
dlog("creating autofs service listener");
return register_autofs_service(AUTOFS_CONFTYPE, autofs_program_2);
}
int
destroy_autofs_service(void)
{
dlog("destroying autofs service listener");
return unregister_autofs_service(AUTOFS_CONFTYPE);
}
int
autofs_mount_fs(am_node *mp, mntfs *mf)
{
int err = 0;
char *target, *target2 = NULL;
struct stat buf;
/*
* For sublinks, we could end up here with an already mounted f/s.
* Don't do anything in that case.
*/
if (!(mf->mf_flags & MFF_MOUNTED))
err = mf->mf_ops->mount_fs(mp, mf);
if (err || mf->mf_flags & MFF_ON_AUTOFS)
/* Nothing else to do */
return err;
if (!(gopt.flags & CFM_AUTOFS_USE_LOFS))
/* Symlinks will be requested in autofs_mount_succeeded */
return 0;
if (mp->am_link)
target = mp->am_link;
else
target = mf->mf_mount;
if (target[0] != '/')
target2 = str3cat(NULL, mp->am_parent->am_path, "/", target);
else
target2 = xstrdup(target);
plog(XLOG_INFO, "autofs: converting from link to lofs (%s -> %s)", mp->am_path, target2);
/*
* we need to stat() the destination, because the bind mount does not
* follow symlinks and/or allow for non-existent destinations.
* we fall back to symlinks if there are problems.
*
* we need to temporarily change pgrp, otherwise our stat() won't
* trigger whatever cascading mounts are needed.
*
* WARNING: we will deadlock if this function is called from the master
* amd process and it happens to trigger another auto mount. Therefore,
* this function should be called only from a child amd process, or
* at the very least it should not be called from the parent unless we
* know for sure that it won't cause a recursive mount. We refuse to
* cause the recursive mount anyway if called from the parent amd.
*/
if (!foreground) {
if ((err = stat(target2, &buf)))
goto out;
}
if ((err = lstat(target2, &buf)))
goto out;
if ((err = mount_lofs(mp->am_path, target2, mf->mf_mopts, 1))) {
errno = err;
goto out;
}
out:
if (target2)
XFREE(target2);
if (err)
return errno;
return 0;
}
int
autofs_umount_fs(am_node *mp, mntfs *mf)
{
int err = 0;
if (!(mf->mf_flags & MFF_ON_AUTOFS) &&
gopt.flags & CFM_AUTOFS_USE_LOFS) {
err = UMOUNT_FS(mp->am_path, mnttab_file_name, 1);
if (err)
return err;
}
/*
* Multiple sublinks could reference this f/s.
* Don't actually unmount it unless we're holding the last reference.
*/
if (mf->mf_refc == 1)
err = mf->mf_ops->umount_fs(mp, mf);
return err;
}
int
autofs_umount_succeeded(am_node *mp)
{
umntres res;
SVCXPRT *transp = mp->am_transp;
if (transp) {
res.status = 0;
if (!svc_sendreply(transp,
(XDRPROC_T_TYPE) xdr_umntres,
(SVC_IN_ARG_TYPE) &res))
svcerr_systemerr(transp);
dlog("Quick reply sent for %s", mp->am_al->al_mnt->mf_mount);
XFREE(transp);
mp->am_transp = NULL;
}
plog(XLOG_INFO, "autofs: unmounting %s succeeded", mp->am_path);
return 0;
}
int
autofs_umount_failed(am_node *mp)
{
umntres res;
SVCXPRT *transp = mp->am_transp;
if (transp) {
res.status = 1;
if (!svc_sendreply(transp,
(XDRPROC_T_TYPE) xdr_umntres,
(SVC_IN_ARG_TYPE) &res))
svcerr_systemerr(transp);
dlog("Quick reply sent for %s", mp->am_al->al_mnt->mf_mount);
XFREE(transp);
mp->am_transp = NULL;
}
plog(XLOG_INFO, "autofs: unmounting %s failed", mp->am_path);
return 0;
}
void
autofs_mount_succeeded(am_node *mp)
{
SVCXPRT *transp = mp->am_transp;
struct stat stb;
/*
* Store dev and rdev -- but not for symlinks
*/
if (gopt.flags & CFM_AUTOFS_USE_LOFS ||
mp->am_al->al_mnt->mf_flags & MFF_ON_AUTOFS) {
if (!lstat(mp->am_path, &stb)) {
mp->am_dev = stb.st_dev;
mp->am_rdev = stb.st_rdev;
}
/* don't expire the entries -- the kernel will do it for us */
mp->am_flags |= AMF_NOTIMEOUT;
}
if (transp) {
autofs_mountres res;
res.mr_type.status = AUTOFS_DONE;
res.mr_type.mount_result_type_u.error = AUTOFS_OK;
res.mr_verbose = 1;
if (!svc_sendreply(transp,
(XDRPROC_T_TYPE) xdr_autofs_mountres,
(SVC_IN_ARG_TYPE) &res))
svcerr_systemerr(transp);
dlog("Quick reply sent for %s", mp->am_al->al_mnt->mf_mount);
XFREE(transp);
mp->am_transp = NULL;
}
plog(XLOG_INFO, "autofs: mounting %s succeeded", mp->am_path);
}
void
autofs_mount_failed(am_node *mp)
{
SVCXPRT *transp = mp->am_transp;
if (transp) {
autofs_mountres res;
res.mr_type.status = AUTOFS_DONE;
res.mr_type.mount_result_type_u.error = AUTOFS_NOENT;
res.mr_verbose = 1;
if (!svc_sendreply(transp,
(XDRPROC_T_TYPE) xdr_autofs_mountres,
(SVC_IN_ARG_TYPE) &res))
svcerr_systemerr(transp);
dlog("Quick reply sent for %s", mp->am_al->al_mnt->mf_mount);
XFREE(transp);
mp->am_transp = NULL;
}
plog(XLOG_INFO, "autofs: mounting %s failed", mp->am_path);
}
void
autofs_get_opts(char *opts, size_t l, autofs_fh_t *fh)
{
xsnprintf(opts, l, "%sdirect",
fh->direct ? "" : "in");
}
int
autofs_compute_mount_flags(mntent_t *mntp)
{
/* Must use overlay mounts */
return MNT2_GEN_OPT_OVERLAY;
}
void autofs_timeout_mp(am_node *mp)
{
/* We don't want any timeouts on autofs nodes */
mp->am_autofs_ttl = NEVER;
}