ad002facae
mkfs warns about unknown "selabel=" fields, and this should be coming from the file_contexts file, not here. Test: treehugger Change-Id: I63f3f616a2588438017e609a1a08c9dd7bf0c2ed
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include <inttypes.h>
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#include "private/android_filesystem_config.h"
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#include "private/fs_config.h"
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// This program takes a list of files and directories (indicated by a
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// trailing slash) on the stdin, and prints to stdout each input
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// filename along with its desired uid, gid, and mode (in octal).
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// The leading slash should be stripped from the input.
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//
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// After the first 4 columns, optional key=value pairs are emitted
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// for each file. Currently, the following keys are supported:
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//
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// -C: capabilities=[hex capabilities value]
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//
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// Example input:
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//
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// system/etc/dbus.conf
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// data/app/
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//
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// Output:
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//
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// system/etc/dbus.conf 1002 1002 440
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// data/app 1000 1000 771
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//
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// Note that the output will omit the trailing slash from
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// directories.
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static void usage() {
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fprintf(stderr, "Usage: fs_config [-D product_out_path] [-R root] [-C]\n");
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}
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int main(int argc, char** argv) {
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char buffer[1024];
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const char* product_out_path = NULL;
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char* root_path = NULL;
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int print_capabilities = 0;
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int opt;
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while((opt = getopt(argc, argv, "CR:D:")) != -1) {
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switch(opt) {
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case 'C':
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print_capabilities = 1;
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break;
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case 'R':
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root_path = optarg;
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break;
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case 'D':
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product_out_path = optarg;
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break;
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default:
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usage();
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exit(EXIT_FAILURE);
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}
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}
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if (root_path != NULL) {
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size_t root_len = strlen(root_path);
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/* Trim any trailing slashes from the root path. */
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while (root_len && root_path[--root_len] == '/') {
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root_path[root_len] = '\0';
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}
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}
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while (fgets(buffer, 1023, stdin) != NULL) {
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int is_dir = 0;
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int i;
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for (i = 0; i < 1024 && buffer[i]; ++i) {
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switch (buffer[i]) {
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case '\n':
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buffer[i-is_dir] = '\0';
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if (i == 0) {
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is_dir = 1; // empty line is considered as root directory
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}
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i = 1025;
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break;
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case '/':
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is_dir = 1;
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break;
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default:
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is_dir = 0;
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break;
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}
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}
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unsigned uid = 0, gid = 0, mode = 0;
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uint64_t capabilities;
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fs_config(buffer, is_dir, product_out_path, &uid, &gid, &mode, &capabilities);
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if (root_path != NULL && strcmp(buffer, root_path) == 0) {
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/* The root of the filesystem needs to be an empty string. */
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strcpy(buffer, "");
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}
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printf("%s %d %d %o", buffer, uid, gid, mode);
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if (print_capabilities) {
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printf(" capabilities=0x%" PRIx64, capabilities);
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}
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printf("\n");
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}
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return 0;
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}
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