static int
parse_perm_line(struct identity_downcall_data *data, char *line, size_t size)
{
char uid_str[size];
char nid_str[size];
char perm_str[size];
lnet_nid_t nid;
__u32 perm, noperm;
int rc, i;
if (data->idd_nperms >= N_PERMS_MAX) {
errlog("permission count %d > max %d\n",
data->idd_nperms, N_PERMS_MAX);
return -1;
}
rc = sscanf(line, "%s %s %s", nid_str, uid_str, perm_str);
if (rc != 3) {
errlog("can't parse line %s\n", line);
return -1;
}
if (!match_uid(data->idd_uid, uid_str))
return 0;
if (!strcmp(nid_str, "*")) {
nid = LNET_NID_ANY;
} else {
nid = libcfs_str2nid(nid_str);
if (nid == LNET_NID_ANY) {
errlog("can't parse nid %s\n", nid_str);
return -1;
}
}
if (parse_perm(&perm, &noperm, perm_str)) {
errlog("invalid perm %s\n", perm_str);
return -1;
}
/* merge the perms with the same nid.
*
* If there is LNET_NID_ANY in data->idd_perms[i].pdd_nid,
* it must be data->idd_perms[0].pdd_nid, and act as default perm.
*/
if (nid != LNET_NID_ANY) {
int found = 0;
/* search for the same nid */
for (i = data->idd_nperms - 1; i >= 0; i--) {
if (data->idd_perms[i].pdd_nid == nid) {
data->idd_perms[i].pdd_perm =
(data->idd_perms[i].pdd_perm | perm) &
~noperm;
found = 1;
break;
}
}
/* NOT found, add to tail */
if (!found) {
data->idd_perms[data->idd_nperms].pdd_nid = nid;
data->idd_perms[data->idd_nperms].pdd_perm =
perm & ~noperm;
data->idd_nperms++;
}
} else {
if (data->idd_nperms > 0) {
/* the first one isn't LNET_NID_ANY, need exchange */
if (data->idd_perms[0].pdd_nid != LNET_NID_ANY) {
data->idd_perms[data->idd_nperms].pdd_nid =
data->idd_perms[0].pdd_nid;
data->idd_perms[data->idd_nperms].pdd_perm =
data->idd_perms[0].pdd_perm;
data->idd_perms[0].pdd_nid = LNET_NID_ANY;
data->idd_perms[0].pdd_perm = perm & ~noperm;
data->idd_nperms++;
} else {
/* only fix LNET_NID_ANY item */
data->idd_perms[0].pdd_perm =
(data->idd_perms[0].pdd_perm | perm) &
~noperm;
}
} else {
/* it is the first one, only add to head */
data->idd_perms[0].pdd_nid = LNET_NID_ANY;
data->idd_perms[0].pdd_perm = perm & ~noperm;
data->idd_nperms = 1;
}
}
return 0;
}
/* recv a complete uid/gid mapping from the peer and map the uid/gid
in the file list to local names */
void recv_uid_list(int f, struct file_list *flist)
{
int id, i;
char *name;
struct idlist *list;
if (numeric_ids) return;
if (preserve_uid) {
/* read the uid list */
list = uidlist;
id = read_int(f);
while (id != 0) {
int len = read_byte(f);
name = (char *)malloc(len+1);
if (!name) out_of_memory("recv_uid_list");
read_sbuf(f, name, len);
if (!list) {
uidlist = add_list(id, name);
list = uidlist;
} else {
list->next = add_list(id, name);
list = list->next;
}
list->id2 = map_uid(id, name);
free(name);
id = read_int(f);
}
}
if (preserve_gid) {
/* and the gid list */
list = gidlist;
id = read_int(f);
while (id != 0) {
int len = read_byte(f);
name = (char *)malloc(len+1);
if (!name) out_of_memory("recv_uid_list");
read_sbuf(f, name, len);
if (!list) {
gidlist = add_list(id, name);
list = gidlist;
} else {
list->next = add_list(id, name);
list = list->next;
}
list->id2 = map_gid(id, name);
free(name);
id = read_int(f);
}
}
if (!(am_root && preserve_uid) && !preserve_gid) return;
/* now convert the uid/gid of all files in the list to the mapped
uid/gid */
for (i=0;i<flist->count;i++) {
if (am_root && preserve_uid && flist->files[i]->uid != 0) {
flist->files[i]->uid = match_uid(flist->files[i]->uid);
}
if (preserve_gid && flist->files[i]->gid != 0) {
flist->files[i]->gid = match_gid(flist->files[i]->gid);
}
}
}
