platform_system_core/fastboot/fs.cpp

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#include "fs.h"
#include "fastboot.h"
#include "make_f2fs.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <ext4_utils/make_ext4fs.h>
#include <sparse/sparse.h>
static int generate_ext4_image(int fd, long long partSize, const std::string& initial_dir,
unsigned eraseBlkSize, unsigned logicalBlkSize)
{
if (initial_dir.empty()) {
make_ext4fs_sparse_fd_align(fd, partSize, NULL, NULL, eraseBlkSize, logicalBlkSize);
} else {
make_ext4fs_sparse_fd_directory_align(fd, partSize, NULL, NULL, initial_dir.c_str(),
eraseBlkSize, logicalBlkSize);
}
return 0;
}
#ifdef USE_F2FS
static int generate_f2fs_image(int fd, long long partSize, const std::string& initial_dir,
unsigned /* unused */, unsigned /* unused */)
{
if (!initial_dir.empty()) {
fprintf(stderr, "Unable to set initial directory on F2FS filesystem\n");
return -1;
}
return make_f2fs_sparse_fd(fd, partSize, NULL, NULL);
}
#endif
static const struct fs_generator {
const char* fs_type; //must match what fastboot reports for partition type
//returns 0 or error value
int (*generate)(int fd, long long partSize, const std::string& initial_dir,
unsigned eraseBlkSize, unsigned logicalBlkSize);
} generators[] = {
{ "ext4", generate_ext4_image},
#ifdef USE_F2FS
{ "f2fs", generate_f2fs_image},
#endif
};
const struct fs_generator* fs_get_generator(const std::string& fs_type) {
for (size_t i = 0; i < sizeof(generators) / sizeof(*generators); i++) {
if (fs_type == generators[i].fs_type) {
return generators + i;
}
}
return nullptr;
}
int fs_generator_generate(const struct fs_generator* gen, int tmpFileNo, long long partSize,
const std::string& initial_dir, unsigned eraseBlkSize, unsigned logicalBlkSize)
{
return gen->generate(tmpFileNo, partSize, initial_dir, eraseBlkSize, logicalBlkSize);
}