int main(int argc, char **argv)
{
int ret, count, i, fd;
TROVE_op_id op_id;
TROVE_coll_id coll_id;
TROVE_handle file_handle, parent_handle;
TROVE_ds_state state;
TROVE_keyval_s key, val;
TROVE_ds_attributes_s s_attr;
TROVE_size f_size;
char *file_name;
char path_name[PATH_SIZE];
char *buf;
TROVE_context_id trove_context = -1;
ret = parse_args(argc, argv);
if (ret < 0) {
fprintf(stderr, "argument parsing failed.\n");
return -1;
}
if (optind + 1 >= argc) return -1;
strcpy(path_to_file, argv[optind]);
strcpy(path_to_unix, argv[optind+1]);
ret = trove_initialize(
TROVE_METHOD_DBPF, NULL, storage_space, 0);
if (ret < 0) {
fprintf(stderr, "initialize failed.\n");
return -1;
}
/* try to look up collection used to store file system */
ret = trove_collection_lookup(
TROVE_METHOD_DBPF, file_system, &coll_id, NULL, &op_id);
if (ret < 0) {
fprintf(stderr, "collection lookup failed.\n");
return -1;
}
ret = trove_open_context(coll_id, &trove_context);
if (ret < 0)
{
fprintf(stderr, "trove_open_context failed\n");
return -1;
}
/* find the parent directory name */
strcpy(path_name, path_to_file);
for (i=strlen(path_name); i >= 0; i--) {
if (path_name[i] != '/') path_name[i] = '\0';
else break;
}
file_name = path_to_file + strlen(path_name);
#if 0
printf("path is %s\n", path_name);
printf("file is %s\n", file_name);
#endif
/* find the parent directory handle */
ret = path_lookup(coll_id, path_name, &parent_handle);
if (ret < 0) {
return -1;
}
/* add new file name/handle pair to parent directory */
key.buffer = file_name;
key.buffer_sz = strlen(file_name) + 1;
val.buffer = &file_handle;
val.buffer_sz = sizeof(file_handle);
ret = trove_keyval_read(coll_id, parent_handle, &key, &val,
0, NULL, NULL, trove_context, &op_id, NULL);
count = 1;
while (ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if (ret < 0) {
fprintf(stderr, "keyval read failed.\n");
return -1;
}
ret = trove_dspace_getattr(coll_id,
file_handle,
&s_attr,
0 /* flags */,
NULL,
trove_context,
&op_id,
NULL);
while (ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if (ret < 0) return -1;
/* get a buffer */
buf = (char *) malloc((size_t) s_attr.u.datafile.b_size);
if (buf == NULL) return -1;
f_size = s_attr.u.datafile.b_size;
/* read data from trove file */
ret = trove_bstream_read_at(coll_id,
file_handle,
buf,
&f_size,
0, /* offset */
0, /* flags */
NULL, /* vtag */
NULL, /* user ptr */
trove_context,
&op_id,
NULL);
count = 1;
while ( ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if (ret < 0 ) {
fprintf(stderr, "bstream write failed.\n");
return -1;
}
/* open up the unix file */
fd = open(path_to_unix, O_RDWR | O_CREAT, 0644);
if (fd < 0) {
perror("open");
return -1;
}
/* write data to file */
write(fd, buf, f_size);
close(fd);
trove_close_context(coll_id, trove_context);
trove_finalize(TROVE_METHOD_DBPF);
#if 0
printf("created file %s (handle = %d)\n", file_name, (int) file_handle);
#endif
return 0;
}
int main(int argc, char **argv)
{
int ret, count, i;
char *file_name;
char path_name[PATH_SIZE];
TROVE_op_id op_id;
TROVE_coll_id coll_id;
TROVE_handle file_handle, parent_handle;
TROVE_ds_state state;
TROVE_keyval_s key, val;
TROVE_ds_attributes_s s_attr;
TROVE_context_id trove_context = -1;
ret = parse_args(argc, argv);
if (ret < 0) {
fprintf(stderr, "argument parsing failed.\n");
return -1;
}
ret = trove_initialize(
TROVE_METHOD_DBPF, NULL, storage_space, storage_space, 0);
if (ret < 0) {
fprintf(stderr, "initialize failed.\n");
return -1;
}
/* try to look up collection used to store file system */
ret = trove_collection_lookup(
TROVE_METHOD_DBPF, file_system, &coll_id, NULL, &op_id);
if (ret < 0) {
fprintf(stderr, "collection lookup failed.\n");
return -1;
}
ret = trove_open_context(coll_id, &trove_context);
if (ret < 0)
{
fprintf(stderr, "trove_open_context failed\n");
return -1;
}
/* find the parent directory name */
strcpy(path_name, path_to_file);
for (i=strlen(path_name); i >= 0; i--) {
if (path_name[i] != '/') path_name[i] = '\0';
else break;
}
file_name = path_to_file + strlen(path_name);
#if 0
printf("path is %s\n", path_name);
printf("file is %s\n", file_name);
#endif
/* find the parent directory handle */
ret = path_lookup(coll_id, path_name, &parent_handle);
if (ret < 0) {
return -1;
}
/* TODO: make a is_dir function... maybe make a full blown stat(2)? */
/* look up the handle for the file */
memset(&key, 0, sizeof(key));
memset(&val, 0, sizeof(val));
key.buffer = file_name;
key.buffer_sz = strlen(file_name)+1;
val.buffer = &file_handle;
val.buffer_sz = sizeof(TROVE_handle);
/* it would be smart to verify that this is a directory first... */
ret = trove_keyval_read(coll_id, parent_handle, &key, &val,
0, NULL, NULL, trove_context, &op_id, NULL);
while (ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if ( ret < 0 || state == -1) {
fprintf(stderr, "read failed for key %s\n", file_name);
return -1;
}
ret = trove_dspace_getattr(coll_id,
file_handle,
&s_attr,
0 /* flags */,
NULL,
trove_context,
&op_id,
NULL);
while (ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if (ret < 0) return -1;
/* 'handles are everything': now that we've gotten a handle from the
* file_name, we can wipe the keyval (via name) and the dspace (via
* handle)*/
key.buffer = file_name;
key.buffer_sz = strlen(file_name)+1;
ret = trove_keyval_remove(coll_id, parent_handle, &key, NULL,
0, NULL, NULL, trove_context, &op_id, NULL);
while (ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if (ret < 0 ) {
fprintf(stderr, "removal failed for %s\n", file_name);
return -1;
}
/* the question: is it up to the caller to clean up the dspace if it removed the last entry? no no no*/
/* gar gar being dense: the dspace gets removed. */
ret = trove_dspace_remove(coll_id,
file_handle,
TROVE_SYNC,
NULL,
trove_context,
&op_id,
NULL);
while (ret == 0) ret = trove_dspace_test(
coll_id, op_id, trove_context, &count, NULL, NULL, &state,
TROVE_DEFAULT_TEST_TIMEOUT);
if (ret < 0) {
fprintf(stderr, "dspace remove failed.\n");
return -1;
}
trove_close_context(coll_id, trove_context);
trove_finalize(TROVE_METHOD_DBPF);
printf("file %s removed (file handle = %d, parent handle = %d).\n",
file_name,
(int) file_handle,
(int) parent_handle);
return 0;
}
