#include <dirent.h> /* readdir() */
#include <assert.h>
-//#define FMT_OFF_T "%li"
-
-
/**
* A wrapper for lseek(2).
*
}
/**
- * Waraper for the write system call.
+ * Wrapper for the write system call.
*
* \param fd The file descriptor to write to.
* \param buf The buffer to write.
* and calling chdir() afterwards (see man 3 getcwd).
*/
int cwd_fd = open(".", O_RDONLY);
- struct stat s;
int ret = -1;
// PARA_DEBUG_LOG("dirname: %s\n", dirname);
while ((entry = readdir(dir))) {
mode_t m;
char *tmp;
+ struct stat s;
if (!strcmp(entry->d_name, "."))
continue;
if (!strcmp(entry->d_name, ".."))
continue;
- ret = -E_OSL_LSTAT;
if (lstat(entry->d_name, &s) == -1)
continue;
m = s.st_mode;
return -E_MKDIR;
}
-static int verify_basename(const char *name)
+static int verify_name(const char *name)
{
if (!name)
- return -E_BAD_BASENAME;
+ return -E_BAD_NAME;
if (!*name)
- return -E_BAD_BASENAME;
+ return -E_BAD_NAME;
if (strchr(name, '/'))
- return -E_BAD_BASENAME;
+ return -E_BAD_NAME;
if (!strcmp(name, ".."))
- return -E_BAD_BASENAME;
+ return -E_BAD_NAME;
if (!strcmp(name, "."))
- return -E_BAD_BASENAME;
+ return -E_BAD_NAME;
return 1;
}
const struct osl_column_description *cd;
ret = -E_BAD_TABLE_DESC;
- ret = verify_basename(t->desc->name);
+ ret = verify_name(t->desc->name);
if (ret < 0)
goto err;
ret = -E_BAD_DB_DIR;
ret = -E_NO_COLUMN_NAME;
if (!cd->name || !cd->name[0])
goto err;
- ret = verify_basename(cd->name);
+ ret = verify_name(cd->name);
if (ret < 0)
goto err;
t->index_header_size += index_column_description_size(cd->name);
break;
case OSL_MAPPED_STORAGE:
t->num_mapped_columns++;
- col->index_offset = t->index_entry_size;
- t->index_entry_size += 8;
+ col->index_offset = t->row_index_size;
+ t->row_index_size += 8;
break;
case OSL_NO_STORAGE:
col->volatile_num = t->num_volatile_columns;
if (!t->num_rbtrees)
goto err;
/* success */
- PARA_DEBUG_LOG("OK. Index entry size: %u\n", t->index_entry_size);
+ PARA_DEBUG_LOG("OK. Index entry size: %u\n", t->row_index_size);
ret = init_column_descriptions(t);
if (ret < 0)
goto err;
* \param desc Pointer to the table description.
*
* \return Positive on success, negative on errors. Possible errors include: \p
- * E_BAD_TABLE_DESC, \p E_BAD_DB_DIR, \p E_BAD_BASENAME, \p E_NO_COMPARE_FUNC, \p
+ * E_BAD_TABLE_DESC, \p E_BAD_DB_DIR, \p E_BAD_NAME, \p E_NO_COMPARE_FUNC, \p
* E_NO_COLUMN_NAME, \p E_DUPLICATE_COL_NAME, \p E_MKDIR, any errors returned
* by para_open().
*/
write_u8(buf, read_u8(buf) & 0xfe);
}
+static void unmap_column(struct osl_table *t, unsigned col_num)
+{
+ struct osl_object map = t->columns[col_num].data_map;
+ int ret;
+ if (!map.data)
+ return;
+ ret = para_munmap(map.data, map.size);
+ assert(ret > 0);
+ map.data = NULL;
+}
+
/**
* Unmap all mapped files of an osl table.
*
t->index_map.data = NULL;
if (!t->num_rows)
return 1;
- FOR_EACH_MAPPED_COLUMN(i, t, cd) {
- struct osl_object map = t->columns[i].data_map;
- if (!map.data)
- continue;
- ret = para_munmap(map.data, map.size);
- if (ret < 0)
- return ret;
- map.data = NULL;
- }
+ FOR_EACH_MAPPED_COLUMN(i, t, cd)
+ unmap_column(t, i);
return 1;
}
+static int map_column(struct osl_table *t, unsigned col_num)
+{
+ struct stat statbuf;
+ char *filename = column_filename(t, col_num);
+ int ret = -E_STAT;
+ if (stat(filename, &statbuf) < 0) {
+ free(filename);
+ return ret;
+ }
+ if (!(S_IFREG & statbuf.st_mode)) {
+ free(filename);
+ return ret;
+ }
+ ret = mmap_full_file(filename, O_RDWR,
+ &t->columns[col_num].data_map);
+ free(filename);
+ return ret;
+}
+
/**
* Map the index file and all columns of type \p OSL_MAPPED_STORAGE into memory.
*
return num_rows;
/* map data files */
FOR_EACH_MAPPED_COLUMN(i, t, cd) {
- struct stat statbuf;
- filename = column_filename(t, i);
- ret = -E_STAT;
- if (stat(filename, &statbuf) < 0) {
- free(filename);
- goto err;
- }
- if (!(S_IFREG & statbuf.st_mode)) {
- free(filename);
- goto err;
- }
- ret = mmap_full_file(filename, O_RDWR,
- &t->columns[i].data_map);
- free(filename);
+ ret = map_column(t, i);
if (ret < 0)
goto err;
}
* of storage type \p OSL_MAPPED_STORAGE.
*
* \return Positive on success, negative on errors. Possible errors include:
- * \p E_BAD_ID, \p E_INVALID_OBJECT.
+ * \p E_BAD_ROW_NUM, \p E_INVALID_OBJECT.
*
* \sa osl_storage_type.
*/
struct osl_column *col = &t->columns[col_num];
uint32_t offset;
char *header;
- char *index_entry;
+ char *cell_index;
int ret;
if (t->num_rows <= row_num)
- return -E_BAD_ID;
- ret = get_index_entry(t, row_num, col_num, &index_entry);
+ return -E_BAD_ROW_NUM;
+ ret = get_cell_index(t, row_num, col_num, &cell_index);
if (ret < 0)
return ret;
- offset = read_u32(index_entry);
- obj->size = read_u32(index_entry + 4) - 1;
+ offset = read_u32(cell_index);
+ obj->size = read_u32(cell_index + 4) - 1;
header = col->data_map.data + offset;
obj->data = header + 1;
if (read_u8(header) == 0xff) {
struct osl_object this_obj;
parent = *new;
if (st == OSL_MAPPED_STORAGE) {
- ret = get_mapped_object(t, col_num, this_row->id,
+ ret = get_mapped_object(t, col_num, this_row->num,
&this_obj);
if (ret < 0)
return ret;
rb_erase(victim, &col->rbtree);
}
-static int add_row_to_rbtrees(struct osl_table *t, uint32_t id,
+static int add_row_to_rbtrees(struct osl_table *t, uint32_t row_num,
struct osl_object *volatile_objs, struct osl_row **row_ptr)
{
unsigned i;
struct osl_row *row = allocate_row(t->num_rbtrees);
const struct osl_column_description *cd;
- row->id = id;
+ row->num = row_num;
row->volatile_objects = volatile_objs;
FOR_EACH_RBTREE_COLUMN(i, t, cd) {
if (cd->storage_type == OSL_MAPPED_STORAGE) {
struct osl_object obj;
- ret = get_mapped_object(t, i, id, &obj);
+ ret = get_mapped_object(t, i, row_num, &obj);
if (ret < 0)
goto err;
ret = insert_rbtree(t, i, row, &obj);
*/
int row_is_invalid(struct osl_table *t, uint32_t row_num)
{
- char *index_entry;
- int i, ret = get_index_entry_start(t, row_num, &index_entry);
+ char *row_index;
+ int i, ret = get_row_index(t, row_num, &row_index);
if (ret < 0)
return ret;
- for (i = 0; i < t->index_entry_size; i++) {
- if ((unsigned char)index_entry[i] != 0xff)
+ for (i = 0; i < t->row_index_size; i++) {
+ if ((unsigned char)row_index[i] != 0xff)
return 0;
}
PARA_INFO_LOG("row %d is invalid\n", row_num);
*/
int mark_row_invalid(struct osl_table *t, uint32_t row_num)
{
- char *index_entry;
- int i, ret = get_index_entry_start(t, row_num, &index_entry);
+ char *row_index;
+ int ret = get_row_index(t, row_num, &row_index);
- PARA_INFO_LOG("marking row %d as invalid\n", row_num);
if (ret < 0)
return ret;
- for (i = 0; i < t->index_entry_size; i++)
- index_entry[i] = 0xff;
+ PARA_INFO_LOG("marking row %d as invalid\n", row_num);
+ memset(row_index, 0xff, t->row_index_size);
return 1;
}
return ret;
}
-static int append_index_entry(const struct osl_table *t, char *new_index_entry)
+static int append_row_index(const struct osl_table *t, char *row_index)
{
char *filename;
int ret;
if (!t->num_mapped_columns)
return 1;
filename = index_filename(t->desc);
-// PARA_DEBUG_LOG("appending %u bytes\n", t->index_entry_size);
- ret = append_file(filename, NULL, 0, new_index_entry,
- t->index_entry_size, NULL);
+ ret = append_file(filename, NULL, 0, row_index,
+ t->row_index_size, NULL);
free(filename);
return ret;
}
char *dirname, *filename = disk_storage_path(t, col_num, ds_name);
int ret = unlink(filename);
- PARA_INFO_LOG("deleted %s\n", filename);
+ PARA_DEBUG_LOG("deleted %s\n", filename);
free(filename);
if (ret < 0) {
if (errno == ENOENT)
int i, ret;
char *ds_name = NULL;
struct rb_node **rb_parents = NULL, ***rb_links = NULL;
- char *new_index_entry = NULL;
+ char *new_row_index = NULL;
struct osl_object *volatile_objs = NULL;
const struct osl_column_description *cd;
rb_parents = para_malloc(t->num_rbtrees * sizeof(struct rn_node*));
rb_links = para_malloc(t->num_rbtrees * sizeof(struct rn_node**));
if (t->num_mapped_columns)
- new_index_entry = para_malloc(t->index_entry_size);
+ new_row_index = para_malloc(t->row_index_size);
/* pass 1: sanity checks */
// PARA_DEBUG_LOG("sanity tests: %p:%p\n", objects[0].data,
// objects[1].data);
ret = append_map_file(t, i, objects + i, &new_size);
if (ret < 0)
goto rollback;
- update_index_entry(new_index_entry, col, new_size,
+ update_cell_index(new_row_index, col, new_size,
objects[i].size);
continue;
}
if (ret < 0)
goto rollback;
}
- ret = append_index_entry(t, new_index_entry);
+ ret = append_row_index(t, new_row_index);
if (ret < 0)
goto rollback;
ret = map_table(t, MAP_TBL_FL_VERIFY_INDEX);
if (ret < 0) { /* truncate index and rollback changes */
char *filename = index_filename(t->desc);
- para_truncate(filename, t->index_entry_size);
+ para_truncate(filename, t->row_index_size);
free(filename);
goto rollback;
}
/* ignore error and return previous error value */
map_table(t, MAP_TBL_FL_VERIFY_INDEX);
out:
- free(new_index_entry);
+ free(new_row_index);
free(ds_name);
free(rb_parents);
free(rb_links);
if (cd->storage_type == OSL_DISK_STORAGE)
return -E_BAD_STORAGE_TYPE;
if (cd->storage_type == OSL_MAPPED_STORAGE)
- return get_mapped_object(t, col_num, r->id, object);
+ return get_mapped_object(t, col_num, r->num, object);
/* volatile */
*object = r->volatile_objects[t->columns[col_num].volatile_num];
return 1;
}
-static int mark_mapped_object_invalid(const struct osl_table *t, uint32_t id,
- unsigned col_num)
+static int mark_mapped_object_invalid(const struct osl_table *t,
+ uint32_t row_num, unsigned col_num)
{
struct osl_object obj;
char *p;
- int ret = get_mapped_object(t, col_num, id, &obj);
+ int ret = get_mapped_object(t, col_num, row_num, &obj);
if (ret < 0)
return ret;
enum osl_storage_type st = cd->storage_type;
remove_rb_node(t, i, r);
if (st == OSL_MAPPED_STORAGE) {
- mark_mapped_object_invalid(t, r->id, i);
+ mark_mapped_object_invalid(t, r->num, i);
continue;
}
if (st == OSL_NO_STORAGE)
free(r->volatile_objects[col->volatile_num].data);
}
if (t->num_mapped_columns) {
- ret = mark_row_invalid(t, r->id);
+ ret = mark_row_invalid(t, r->num);
if (ret < 0)
goto out;
t->num_invalid_rows++;
return -E_BAD_TABLE;
col = &t->columns[col_num];
cd = get_column_description(t->desc, col_num);
+ PARA_DEBUG_LOG("updating column %u of %s\n", col_num, t->desc->name);
if (cd->storage_flags & OSL_RBTREE) {
if (search_rbtree(obj, t, col_num, NULL, NULL) > 0)
return -E_RB_KEY_EXISTS;
}
if (cd->storage_flags & OSL_FIXED_SIZE) {
if (obj->size != cd->data_size)
- return -E_BAD_SIZE;
+ return -E_BAD_DATA_SIZE;
}
remove_rb_node(t, col_num, r);
if (cd->storage_type == OSL_NO_STORAGE) { /* TODO: If fixed size, reuse object? */
return ret;
} else { /* mapped storage */
struct osl_object old_obj;
- ret = get_mapped_object(t, col_num, r->id, &old_obj);
+ ret = get_mapped_object(t, col_num, r->num, &old_obj);
if (ret < 0)
return ret;
/*
memcpy(old_obj.data, obj->data, cd->data_size);
else { /* TODO: if the size doesn't change, use old space */
uint32_t new_data_map_size;
- char *index_entry;
- ret = get_index_entry_start(t, r->id, &index_entry);
+ char *row_index;
+ ret = get_row_index(t, r->num, &row_index);
if (ret < 0)
return ret;
- ret = mark_mapped_object_invalid(t, r->id, col_num);
+ ret = mark_mapped_object_invalid(t, r->num, col_num);
if (ret < 0)
return ret;
+ unmap_column(t, col_num);
ret = append_map_file(t, col_num, obj,
&new_data_map_size);
if (ret < 0)
return ret;
- update_index_entry(index_entry, col, new_data_map_size,
+ ret = map_column(t, col_num);
+ if (ret < 0)
+ return ret;
+ update_cell_index(row_index, col, new_data_map_size,
obj->size);
}
}
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