static void
exports_update_one(nfs_export *exp, int verbose)
{
/* check mountpoint option */
if (exp->m_mayexport &&
exp->m_export.e_mountpoint &&
!is_mountpoint(exp->m_export.e_mountpoint[0]?
exp->m_export.e_mountpoint:
exp->m_export.e_path)) {
printf("%s not exported as %s not a mountpoint.\n",
exp->m_export.e_path, exp->m_export.e_mountpoint);
exp->m_mayexport = 0;
}
if (exp->m_mayexport && ((exp->m_exported<1) || exp->m_changed)) {
if (verbose)
printf("%sexporting %s:%s to kernel\n",
exp->m_exported ?"re":"",
exp->m_client->m_hostname,
exp->m_export.e_path);
if (!export_export(exp))
error(exp, errno);
}
if (exp->m_exported && ! exp->m_mayexport) {
if (verbose)
printf("unexporting %s:%s from kernel\n",
exp->m_client->m_hostname,
exp->m_export.e_path);
if (!export_unexport(exp))
error(exp, errno);
}
}
static struct nfs_fh_len *
get_rootfh(struct svc_req *rqstp, dirpath *path, nfs_export **expret,
mountstat3 *error, int v3)
{
struct sockaddr_in *sin = nfs_getrpccaller_in(rqstp->rq_xprt);
struct stat stb, estb;
nfs_export *exp;
struct nfs_fh_len *fh;
char rpath[MAXPATHLEN+1];
char *p = *path;
if (*p == '\0')
p = "/";
/* Reload /var/lib/nfs/etab if necessary */
auth_reload();
/* Resolve symlinks */
if (realpath(p, rpath) != NULL) {
rpath[sizeof (rpath) - 1] = '\0';
p = rpath;
}
/* Now authenticate the intruder... */
exp = auth_authenticate("mount", sin, p);
if (!exp) {
*error = NFSERR_ACCES;
return NULL;
}
if (stat(p, &stb) < 0) {
xlog(L_WARNING, "can't stat exported dir %s: %s",
p, strerror(errno));
if (errno == ENOENT)
*error = NFSERR_NOENT;
else
*error = NFSERR_ACCES;
return NULL;
}
if (!S_ISDIR(stb.st_mode) && !S_ISREG(stb.st_mode)) {
xlog(L_WARNING, "%s is not a directory or regular file", p);
*error = NFSERR_NOTDIR;
return NULL;
}
if (stat(exp->m_export.e_path, &estb) < 0) {
xlog(L_WARNING, "can't stat export point %s: %s",
p, strerror(errno));
*error = NFSERR_NOENT;
return NULL;
}
if (estb.st_dev != stb.st_dev
&& (!new_cache
|| !(exp->m_export.e_flags & NFSEXP_CROSSMOUNT))) {
xlog(L_WARNING, "request to export directory %s below nearest filesystem %s",
p, exp->m_export.e_path);
*error = NFSERR_ACCES;
return NULL;
}
if (exp->m_export.e_mountpoint &&
!is_mountpoint(exp->m_export.e_mountpoint[0]?
exp->m_export.e_mountpoint:
exp->m_export.e_path)) {
xlog(L_WARNING, "request to export an unmounted filesystem: %s",
p);
*error = NFSERR_NOENT;
return NULL;
}
if (new_cache) {
/* This will be a static private nfs_export with just one
* address. We feed it to kernel then extract the filehandle,
*
*/
if (cache_export(exp, p)) {
*error = NFSERR_ACCES;
return NULL;
}
fh = cache_get_filehandle(exp, v3?64:32, p);
if (fh == NULL) {
*error = NFSERR_ACCES;
return NULL;
}
} else {
int did_export = 0;
retry:
if (exp->m_exported<1) {
export_export(exp);
did_export = 1;
}
if (!exp->m_xtabent)
xtab_append(exp);
if (v3)
fh = getfh_size ((struct sockaddr *) sin, p, 64);
if (!v3 || (fh == NULL && errno == EINVAL)) {
/* We first try the new nfs syscall. */
fh = getfh ((struct sockaddr *) sin, p);
if (fh == NULL && errno == EINVAL)
/* Let's try the old one. */
fh = getfh_old ((struct sockaddr *) sin,
stb.st_dev, stb.st_ino);
}
if (fh == NULL && !did_export) {
exp->m_exported = 0;
goto retry;
}
if (fh == NULL) {
xlog(L_WARNING, "getfh failed: %s", strerror(errno));
*error = NFSERR_ACCES;
return NULL;
}
}
*error = NFS_OK;
mountlist_add(inet_ntoa(sin->sin_addr), p);
if (expret)
*expret = exp;
return fh;
}
