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#include <stdio.h>
#include <getopt.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <ext2fs/ext2fs.h>
#include "perms.h"
#include "base_fs.h"
#include "block_list.h"
#include "basefs_allocator.h"
#include "create_inode.h"
static char *prog_name = "e2fsdroid";
static char *in_file;
static char *block_list;
static char *basefs_out;
static char *basefs_in;
static char *mountpoint = "";
static time_t fixed_time = -1;
static char *fs_config_file;
static struct selinux_opt seopt_file[8];
static int max_nr_opt = (int)sizeof(seopt_file) / sizeof(seopt_file[0]);
static char *product_out;
static char *src_dir;
static int android_configure;
static int android_sparse_file = 1;
static void usage(int ret)
{
fprintf(stderr, "%s [-B block_list] [-D basefs_out] [-T timestamp]\n"
"\t[-C fs_config] [-S file_contexts] [-p product_out]\n"
"\t[-a mountpoint] [-d basefs_in] [-f src_dir] [-e] image\n",
prog_name);
exit(ret);
}
static char *absolute_path(const char *file)
{
char *ret;
char cwd[PATH_MAX];
if (file[0] != '/') {
getcwd(cwd, PATH_MAX);
ret = malloc(strlen(cwd) + 1 + strlen(file) + 1);
if (ret)
sprintf(ret, "%s/%s", cwd, file);
} else
ret = strdup(file);
return ret;
}
int main(int argc, char *argv[])
{
int c;
char *p;
int flags = EXT2_FLAG_RW;
errcode_t retval;
io_manager io_mgr;
ext2_filsys fs = NULL;
struct fs_ops_callbacks fs_callbacks = { NULL, NULL };
char *token;
int nr_opt = 0;
add_error_table(&et_ext2_error_table);
while ((c = getopt (argc, argv, "T:C:S:p:a:D:d:B:f:e")) != EOF) {
switch (c) {
case 'T':
fixed_time = strtoul(optarg, &p, 0);
android_configure = 1;
break;
case 'C':
fs_config_file = absolute_path(optarg);
android_configure = 1;
break;
case 'S':
token = strtok(optarg, ",");
while (token) {
if (nr_opt == max_nr_opt) {
fprintf(stderr, "Expected at most %d selinux opts\n",
max_nr_opt);
exit(EXIT_FAILURE);
}
seopt_file[nr_opt].type = SELABEL_OPT_PATH;
seopt_file[nr_opt].value = absolute_path(token);
nr_opt++;
token = strtok(NULL, ",");
}
android_configure = 1;
break;
case 'p':
product_out = absolute_path(optarg);
break;
case 'a':
mountpoint = strdup(optarg);
break;
case 'D':
basefs_out = absolute_path(optarg);
break;
case 'd':
basefs_in = absolute_path(optarg);
break;
case 'B':
block_list = absolute_path(optarg);
break;
case 'f':
src_dir = absolute_path(optarg);
break;
case 'e':
android_sparse_file = 0;
break;
default:
usage(EXIT_FAILURE);
}
}
if (optind >= argc) {
fprintf(stderr, "Expected filename after options\n");
exit(EXIT_FAILURE);
}
in_file = strdup(argv[optind]);
io_mgr = android_sparse_file ? sparse_io_manager: unix_io_manager;
retval = ext2fs_open(in_file, flags, 0, 0, io_mgr, &fs);
if (retval) {
com_err(prog_name, retval, "while opening file %s\n", in_file);
return retval;
}
if (src_dir) {
ext2fs_read_bitmaps(fs);
if (basefs_in) {
retval = base_fs_alloc_load(fs, basefs_in, mountpoint);
if (retval) {
com_err(prog_name, retval, "%s",
"while reading base_fs file");
exit(1);
}
fs_callbacks.create_new_inode =
base_fs_alloc_set_target;
fs_callbacks.end_create_new_inode =
base_fs_alloc_unset_target;
}
retval = populate_fs2(fs, EXT2_ROOT_INO, src_dir,
EXT2_ROOT_INO, &fs_callbacks);
if (retval) {
com_err(prog_name, retval, "%s",
"while populating file system");
exit(1);
}
if (basefs_in)
base_fs_alloc_cleanup(fs);
}
if (android_configure) {
retval = android_configure_fs(fs, src_dir, product_out, mountpoint,
seopt_file, nr_opt, fs_config_file, fixed_time);
if (retval) {
com_err(prog_name, retval, "%s",
"while configuring the file system");
exit(1);
}
}
if (block_list) {
retval = fsmap_iter_filsys(fs, &block_list_format, block_list,
mountpoint);
if (retval) {
com_err(prog_name, retval, "%s",
"while creating the block_list");
exit(1);
}
}
if (basefs_out) {
retval = fsmap_iter_filsys(fs, &base_fs_format,
basefs_out, mountpoint);
if (retval) {
com_err(prog_name, retval, "%s",
"while creating the basefs file");
exit(1);
}
}
retval = ext2fs_close_free(&fs);
if (retval) {
com_err(prog_name, retval, "%s",
"while writing superblocks");
exit(1);
}
remove_error_table(&et_ext2_error_table);
return 0;
}
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