/*
* Get exported_ap by path
*/
am_node *
path_to_exported_ap(char *path)
{
int index;
am_node *mp;
mp = get_first_exported_ap(&index);
while (mp != NULL) {
if (STREQ(mp->am_path, path))
break;
mp = get_next_exported_ap(&index);
}
return mp;
}
/*
* Process PAWD string of remote pawd tool.
*
* We repeat the resolution of the string until the resolved string resolves
* to itself. This ensures that we follow path resolutions through all
* possible Amd mount points until we reach some sort of convergence. To
* prevent possible infinite loops, we break out of this loop if the strings
* do not converge after MAX_PAWD_TRIES times.
*/
amq_string *
amqproc_pawd_1_svc(voidp argp, struct svc_req *rqstp)
{
static amq_string res;
#define MAX_PAWD_TRIES 10
int index, len, maxagain = MAX_PAWD_TRIES;
am_node *mp;
char *mountpoint;
char *dir = *(char **) argp;
static char tmp_buf[MAXPATHLEN];
char prev_buf[MAXPATHLEN];
tmp_buf[0] = prev_buf[0] = '\0'; /* default is empty string: no match */
do {
for (mp = get_first_exported_ap(&index);
mp;
mp = get_next_exported_ap(&index)) {
if (STREQ(mp->am_al->al_mnt->mf_ops->fs_type, "toplvl"))
continue;
if (STREQ(mp->am_al->al_mnt->mf_ops->fs_type, "auto"))
continue;
mountpoint = (mp->am_link ? mp->am_link : mp->am_al->al_mnt->mf_mount);
len = strlen(mountpoint);
if (len == 0)
continue;
if (!NSTREQ(mountpoint, dir, len))
continue;
if (dir[len] != '\0' && dir[len] != '/')
continue;
xstrlcpy(tmp_buf, mp->am_path, sizeof(tmp_buf));
xstrlcat(tmp_buf, &dir[len], sizeof(tmp_buf));
break;
} /* end of "for" loop */
/* once tmp_buf and prev_buf are equal, break out of "do" loop */
if (STREQ(tmp_buf, prev_buf))
break;
else
xstrlcpy(prev_buf, tmp_buf, sizeof(prev_buf));
} while (--maxagain);
/* check if we couldn't resolve the string after MAX_PAWD_TRIES times */
if (maxagain <= 0)
plog(XLOG_WARNING, "path \"%s\" did not resolve after %d tries",
tmp_buf, MAX_PAWD_TRIES);
res = tmp_buf;
return &res;
}
static void
amfs_union_mounted(mntfs *mf)
{
int index;
am_node *mp;
amfs_mkcacheref(mf);
/*
* Having made the union mount point,
* populate all the entries...
*/
for (mp = get_first_exported_ap(&index);
mp;
mp = get_next_exported_ap(&index)) {
if (mp->am_mnt == mf) {
/* return value from create_amfs_union_node is ignored by mapc_keyiter */
(void) mapc_keyiter((mnt_map *) mp->am_mnt->mf_private,
create_amfs_union_node,
mp);
break;
}
}
}
/*
* Iterator functions for exported_ap[]
*/
am_node *
get_first_exported_ap(int *index)
{
*index = -1;
return get_next_exported_ap(index);
}
