int cavan_sha_update2(struct cavan_sha_context *context, int fd)
{
while (1) {
ssize_t rdlen;
char buff[4096];
rdlen = ffile_read(fd, buff, sizeof(buff));
if (rdlen <= 0) {
return rdlen;
}
cavan_sha_update(context, buff, rdlen);
}
return 0;
}
struct buffer *read_lines(const char *file_path)
{
struct stat st;
struct buffer *buff;
int ret;
int fd;
fd = open(file_path, O_RDONLY | O_BINARY);
if (fd < 0)
{
perror("open");
return NULL;
}
ret = fstat(fd, &st);
if (ret < 0)
{
perror("fstat");
goto out_close_file;
}
buff = malloc_buffer(st.st_size);
if (buff == NULL)
{
perror("malloc_buffer");
goto out_close_file;
}
ret = ffile_read(fd, buff->space, buff->size);
if (ret < 0)
{
perror("ffile_read");
goto out_free_buff;
}
close(fd);
return buff;
out_free_buff:
free_buffer(buff);
out_close_file:
close(fd);
return NULL;
}
static int ext2_read_directory_entry(struct ext2_desc *desc, off_t offset, struct ext2_directory_entry *entry)
{
ssize_t rdlen;
rdlen = ffile_readfrom(desc->fd, entry, EXT2_DIR_ENTRY_HEADER_SIZE, offset);
if (rdlen < 0)
{
pr_error_info("read");
return rdlen;
}
if (entry->inode == 0)
{
pr_red_info("inode is zero");
return -EINVAL;
}
if (entry->name_len == 0)
{
pr_red_info("name length is zero");
return -EINVAL;
}
if (entry->rec_len < EXT2_DIR_ENTRY_HEADER_SIZE + entry->name_len)
{
pr_red_info("rec_len = %d", entry->rec_len);
return -EINVAL;
}
rdlen = ffile_read(desc->fd, entry->name, entry->name_len);
if (rdlen < 0)
{
pr_error_info("read");
return rdlen;
}
entry->name[rdlen] = 0;
#if CAVAN_EXT2_DEBUG
show_ext2_directory_entry(entry);
#endif
return 0;
}
