#define _BLUESKY_H
#include <stdint.h>
+#include <inttypes.h>
#include <glib.h>
#ifdef __cplusplus
void bluesky_init(void);
+gchar *bluesky_lowercase(const gchar *s);
+
/* Reference-counted blocks of memory, used for passing data in and out of
* storage backends and in other places. */
typedef struct {
/* Timestamp, measured in microseconds since the Unix epoch. */
typedef int64_t bluesky_time;
+/* High-resolution timer, measured in nanoseconds. */
+typedef int64_t bluesky_time_hires;
+bluesky_time_hires bluesky_now_hires();
+
/* In-memory representation of an inode within a Blue Sky server. This
* corresponds roughly with information that is committed to persistent
* storage. Locking/refcounting rules:
* that we don't exhaust the identifier space. */
uint64_t inum;
- uint64_t change_count; /* Incremented each with each change made */
+ /* change_count is increased with every operation which modifies the inode,
+ * and can be used to determine if cached data is still valid.
+ * change_commit is the value of change_count when the inode was last
+ * committed to stable storage. */
+ uint64_t change_count, change_commit;
+
int64_t atime; /* Microseconds since the Unix epoch */
int64_t ctime;
int64_t mtime;
/* Directory-specific fields */
GSequence *dirents; /* List of entries for READDIR */
GHashTable *dirhash; /* Hash table by name for LOOKUP */
+ GHashTable *dirhash_folded; /* As above, but case-folded */
uint64_t parent_inum; /* inode for ".."; 0 if the root directory */
} BlueSkyInode;
* is used to provide a stable key for restarting a READDIR call. */
typedef struct {
gchar *name;
+ gchar *name_folded; /* Name, folded for case-insensitive lookup */
uint32_t cookie;
uint64_t inum;
} BlueSkyDirent;
void bluesky_dirent_destroy(gpointer dirent);
uint64_t bluesky_directory_hash(gchar *name);
uint64_t bluesky_directory_lookup(BlueSkyInode *inode, gchar *name);
+uint64_t bluesky_directory_ilookup(BlueSkyInode *inode, gchar *name);
gboolean bluesky_directory_insert(BlueSkyInode *dir, gchar *name,
uint64_t inum);
void bluesky_directory_dump(BlueSkyInode *dir);
void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
char *buf, gint len);
+void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode);
+void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum);
+void bluesky_serialize_inode(GString *out, BlueSkyInode *inode);
+BlueSkyInode *bluesky_deserialize_inode(BlueSkyFS *fs, const gchar *buf);
+
+gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,
+ gpointer unused);
+
#ifdef __cplusplus
}
#endif