diff options
Diffstat (limited to 'amend/permissions.c')
| -rw-r--r-- | amend/permissions.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/amend/permissions.c b/amend/permissions.c deleted file mode 100644 index a642d0bb2..000000000 --- a/amend/permissions.c +++ /dev/null @@ -1,270 +0,0 @@ -/* - * Copyright (C) 2007 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <stdlib.h> -#include <string.h> -#include "permissions.h" - -int -initPermissionRequestList(PermissionRequestList *list) -{ - if (list != NULL) { - list->requests = NULL; - list->numRequests = 0; - list->requestsAllocated = 0; - return 0; - } - return -1; -} - -int -addPermissionRequestToList(PermissionRequestList *list, - const char *path, bool recursive, unsigned int permissions) -{ - if (list == NULL || list->numRequests < 0 || - list->requestsAllocated < list->numRequests || path == NULL) - { - return -1; - } - - if (list->numRequests == list->requestsAllocated) { - int newSize; - PermissionRequest *newRequests; - - newSize = list->requestsAllocated * 2; - if (newSize < 16) { - newSize = 16; - } - newRequests = (PermissionRequest *)realloc(list->requests, - newSize * sizeof(PermissionRequest)); - if (newRequests == NULL) { - return -2; - } - list->requests = newRequests; - list->requestsAllocated = newSize; - } - - PermissionRequest *req; - req = &list->requests[list->numRequests++]; - req->path = strdup(path); - if (req->path == NULL) { - list->numRequests--; - return -3; - } - req->recursive = recursive; - req->requested = permissions; - req->allowed = 0; - - return 0; -} - -void -freePermissionRequestListElements(PermissionRequestList *list) -{ - if (list != NULL && list->numRequests >= 0 && - list->requestsAllocated >= list->numRequests) - { - int i; - for (i = 0; i < list->numRequests; i++) { - free((void *)list->requests[i].path); - } - free(list->requests); - initPermissionRequestList(list); - } -} - -/* - * Global permission table - */ - -static struct { - Permission *permissions; - int numPermissionEntries; - int allocatedPermissionEntries; - bool permissionStateInitialized; -} gPermissionState = { -#if 1 - NULL, 0, 0, false -#else - .permissions = NULL, - .numPermissionEntries = 0, - .allocatedPermissionEntries = 0, - .permissionStateInitialized = false -#endif -}; - -int -permissionInit() -{ - if (gPermissionState.permissionStateInitialized) { - return -1; - } - gPermissionState.permissions = NULL; - gPermissionState.numPermissionEntries = 0; - gPermissionState.allocatedPermissionEntries = 0; - gPermissionState.permissionStateInitialized = true; -//xxx maybe add an "namespace root gets no permissions" fallback by default - return 0; -} - -void -permissionCleanup() -{ - if (gPermissionState.permissionStateInitialized) { - gPermissionState.permissionStateInitialized = false; - if (gPermissionState.permissions != NULL) { - int i; - for (i = 0; i < gPermissionState.numPermissionEntries; i++) { - free((void *)gPermissionState.permissions[i].path); - } - free(gPermissionState.permissions); - } - } -} - -int -getPermissionCount() -{ - if (gPermissionState.permissionStateInitialized) { - return gPermissionState.numPermissionEntries; - } - return -1; -} - -const Permission * -getPermissionAt(int index) -{ - if (!gPermissionState.permissionStateInitialized) { - return NULL; - } - if (index < 0 || index >= gPermissionState.numPermissionEntries) { - return NULL; - } - return &gPermissionState.permissions[index]; -} - -int -getAllowedPermissions(const char *path, bool recursive, - unsigned int *outAllowed) -{ - if (!gPermissionState.permissionStateInitialized) { - return -2; - } - if (outAllowed == NULL) { - return -1; - } - *outAllowed = 0; - if (path == NULL) { - return -1; - } - //TODO: implement this for real. - recursive = false; - *outAllowed = PERMSET_ALL; - return 0; -} - -int -countPermissionConflicts(PermissionRequestList *requests, bool updateAllowed) -{ - if (!gPermissionState.permissionStateInitialized) { - return -2; - } - if (requests == NULL || requests->requests == NULL || - requests->numRequests < 0 || - requests->requestsAllocated < requests->numRequests) - { - return -1; - } - int conflicts = 0; - int i; - for (i = 0; i < requests->numRequests; i++) { - PermissionRequest *req; - unsigned int allowed; - int ret; - - req = &requests->requests[i]; - ret = getAllowedPermissions(req->path, req->recursive, &allowed); - if (ret < 0) { - return ret; - } - if ((req->requested & ~allowed) != 0) { - conflicts++; - } - if (updateAllowed) { - req->allowed = allowed; - } - } - return conflicts; -} - -int -registerPermissionSet(int count, Permission *set) -{ - if (!gPermissionState.permissionStateInitialized) { - return -2; - } - if (count < 0 || (count > 0 && set == NULL)) { - return -1; - } - if (count == 0) { - return 0; - } - - if (gPermissionState.numPermissionEntries + count >= - gPermissionState.allocatedPermissionEntries) - { - Permission *newList; - int newSize; - - newSize = (gPermissionState.allocatedPermissionEntries + count) * 2; - if (newSize < 16) { - newSize = 16; - } - newList = (Permission *)realloc(gPermissionState.permissions, - newSize * sizeof(Permission)); - if (newList == NULL) { - return -3; - } - gPermissionState.permissions = newList; - gPermissionState.allocatedPermissionEntries = newSize; - } - - Permission *p = &gPermissionState.permissions[ - gPermissionState.numPermissionEntries]; - int i; - for (i = 0; i < count; i++) { - *p = set[i]; - //TODO: cache the strlen of the path - //TODO: normalize; strip off trailing / - p->path = strdup(p->path); - if (p->path == NULL) { - /* If we can't add all of the entries, we don't - * add any of them. - */ - Permission *pp = &gPermissionState.permissions[ - gPermissionState.numPermissionEntries]; - while (pp != p) { - free((void *)pp->path); - pp++; - } - return -4; - } - p++; - } - gPermissionState.numPermissionEntries += count; - - return 0; -} |