capture: write file data to CDAT/CTAB tags

src/capture.c

@@ -11,6 +11,7 @@
 #include <blue/term/print.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 #define BUFFER_SIZE 65536
 
@@ -37,6 +38,73 @@ struct capture_ctx {
 	struct string_table ctx_strings;
 };
 
+static enum ec3_status capture_file(
+	struct capture_ctx *ctx,
+	struct ec3_tag_ioctx *vol,
+	b_directory *dir,
+	const char *filename,
+	const b_path *filepath)
+{
+	const struct ec3_image_info *image_info
+		= ec3_image_ioctx_get_info(ctx->ctx_image);
+	size_t key = string_table_get(&ctx->ctx_strings, filename);
+	size_t buf_len = image_info->img_cluster_size;
+	char *buf = malloc(buf_len);
+
+	if (!buf) {
+		return EC3_ERR_NO_MEMORY;
+	}
+
+	b_file *src = NULL;
+	b_status status = b_file_open(
+		dir,
+		filepath,
+		B_FILE_READ_ONLY | B_FILE_BINARY,
+		&src);
+	if (!B_OK(status)) {
+		free(buf);
+		return ec3_status_from_b_status(status, EC3_ERR_NO_ENTRY);
+	}
+
+	enum ec3_status s2 = EC3_SUCCESS;
+
+	while (1) {
+		size_t nr_read = 0;
+		status = b_file_read(
+			src,
+			B_OFFSET_CURRENT,
+			buf_len,
+			buf,
+			&nr_read);
+
+		if (!B_OK(status)) {
+			s2 = ec3_status_from_b_status(
+				status,
+				EC3_ERR_IO_FAILURE);
+			break;
+		}
+
+		ec3_chunk_id chunk;
+		enum ec3_status s2 = chunk_table_put(
+			&ctx->ctx_chunks,
+			buf,
+			nr_read,
+			chunk);
+
+		if (s2 != EC3_SUCCESS) {
+			break;
+		}
+
+		if (nr_read < buf_len) {
+			break;
+		}
+	}
+
+	free(buf);
+	b_file_release(src);
+	return s2;
+}
+
 static enum ec3_status capture_directory(
 	struct capture_ctx *ctx,
 	uint64_t id,
@@ -72,8 +140,27 @@ static enum ec3_status capture_directory(
 	b_directory_iterator it;
 	b_directory_iterator_begin(dir, &it, B_DIRECTORY_ITERATE_PARENT_FIRST);
 	while (b_directory_iterator_is_valid(&it)) {
+		if (!b_directory_path_is_file(dir, it.filepath)) {
+			b_directory_iterator_next(&it);
+			continue;
+		}
+
 		printf("%s\n", b_path_ptr(it.filepath));
-		size_t key = string_table_get(&ctx->ctx_strings, it.filename);
+
+		enum ec3_status status2 = capture_file(
+			ctx,
+			volu,
+			dir,
+			it.filename,
+			it.filepath);
+
+		if (status2 != EC3_SUCCESS) {
+			b_err("failed to capture file '%s'",
+			      b_path_ptr(it.filepath));
+			b_i("error code: %s", ec3_status_to_string(status2));
+			break;
+		}
+
 		b_directory_iterator_next(&it);
 	}
 
@@ -88,6 +175,10 @@ static int capture(
 	const b_arglist *opt,
 	const b_array *args)
 {
+	printf("sizeof(struct ec3_vnode_group) = %zu\n",
+	       sizeof(struct ec3_vnode_group));
+	return 0;
+
 	const char *out_path = NULL;
 	b_arglist_get_string(opt, OPT_OUTPATH, OPT_OUTPATH_PATH, 0, &out_path);
 
@@ -170,6 +261,7 @@ static int capture(
 	struct capture_ctx ctx = {0};
 	ctx.ctx_image = image;
 	chunk_table_init(ctab, cdat, param.p_cluster_size, &ctx.ctx_chunks);
+	chunk_table_init_empty_table(&ctx.ctx_chunks);
 	string_table_init(&ctx.ctx_strings);
 
 	uint64_t next_auto_id = 0;