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authorDees Troy <dees_troy@teamw.in>2013-08-28 18:00:58 +0200
committerGerrit Code Review <gerrit@198.50.184.117>2013-08-28 18:00:58 +0200
commitde307148cfb7f1f37df875f0451f56488b8f68b2 (patch)
tree7342cbe1d30c701e331a9bb11705044f1a3f20b7 /exfat/libexfat/exfat.h
parentignore lost+found in all the places (diff)
parentupdate exfat to latest commits for io issues (diff)
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Diffstat (limited to 'exfat/libexfat/exfat.h')
-rw-r--r--exfat/libexfat/exfat.h43
1 files changed, 23 insertions, 20 deletions
diff --git a/exfat/libexfat/exfat.h b/exfat/libexfat/exfat.h
index a6a9f706d..ff58e8414 100644
--- a/exfat/libexfat/exfat.h
+++ b/exfat/libexfat/exfat.h
@@ -3,11 +3,12 @@
Definitions of structures and constants used in exFAT file system
implementation.
+ Free exFAT implementation.
Copyright (C) 2010-2013 Andrew Nayenko
- This program is free software: you can redistribute it and/or modify
+ This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
+ the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@@ -15,8 +16,9 @@
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef EXFAT_H_INCLUDED
@@ -28,6 +30,7 @@
#include <stdbool.h>
#include <sys/stat.h>
#include <sys/types.h>
+#include "compiler.h"
#include "exfatfs.h"
#include "version.h"
@@ -48,12 +51,16 @@
#define ROUND_UP(x, d) (DIV_ROUND_UP(x, d) * (d))
#define UTF8_BYTES(c) ((c) * 6) /* UTF-8 character can occupy up to 6 bytes */
+typedef size_t bitmap_t;
+#define BMAP_SIZE(count) (ROUND_UP(count, sizeof(bitmap_t) * 8) / 8)
+#define BMAP_BLOCK(index) ((index) / sizeof(bitmap_t) / 8)
+#define BMAP_MASK(index) ((bitmap_t) 1 << ((index) % (sizeof(bitmap_t) * 8)))
#define BMAP_GET(bitmap, index) \
- (((uint8_t*) bitmap)[(index) / 8] & (1u << ((index) % 8)))
+ ((bitmap)[BMAP_BLOCK(index)] & BMAP_MASK(index))
#define BMAP_SET(bitmap, index) \
- ((uint8_t*) bitmap)[(index) / 8] |= (1u << ((index) % 8))
+ ((bitmap)[BMAP_BLOCK(index)] |= BMAP_MASK(index))
#define BMAP_CLR(bitmap, index) \
- ((uint8_t*) bitmap)[(index) / 8] &= ~(1u << ((index) % 8))
+ ((bitmap)[BMAP_BLOCK(index)] &= ~BMAP_MASK(index))
struct exfat_node
{
@@ -94,7 +101,7 @@ struct exfat
{
cluster_t start_cluster;
uint32_t size; /* in bits */
- uint8_t* chunk;
+ bitmap_t* chunk;
uint32_t chunk_size; /* in bits */
bool dirty;
}
@@ -123,14 +130,10 @@ struct exfat_human_bytes
extern int exfat_errors;
-void exfat_bug(const char* format, ...)
- __attribute__((format(printf, 1, 2), noreturn));
-void exfat_error(const char* format, ...)
- __attribute__((format(printf, 1, 2)));
-void exfat_warn(const char* format, ...)
- __attribute__((format(printf, 1, 2)));
-void exfat_debug(const char* format, ...)
- __attribute__((format(printf, 1, 2)));
+void exfat_bug(const char* format, ...) PRINTF NORETURN;
+void exfat_error(const char* format, ...) PRINTF;
+void exfat_warn(const char* format, ...) PRINTF;
+void exfat_debug(const char* format, ...) PRINTF;
struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode);
int exfat_close(struct exfat_dev* dev);
@@ -140,9 +143,9 @@ off64_t exfat_get_size(const struct exfat_dev* dev);
off64_t exfat_seek(struct exfat_dev* dev, off64_t offset, int whence);
ssize_t exfat_read(struct exfat_dev* dev, void* buffer, size_t size);
ssize_t exfat_write(struct exfat_dev* dev, const void* buffer, size_t size);
-void exfat_pread(struct exfat_dev* dev, void* buffer, size_t size,
+ssize_t exfat_pread(struct exfat_dev* dev, void* buffer, size_t size,
off64_t offset);
-void exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size,
+ssize_t exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size,
off64_t offset);
ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node,
void* buffer, size_t size, off64_t offset);
@@ -163,7 +166,7 @@ cluster_t exfat_next_cluster(const struct exfat* ef,
const struct exfat_node* node, cluster_t cluster);
cluster_t exfat_advance_cluster(const struct exfat* ef,
struct exfat_node* node, uint32_t count);
-void exfat_flush_cmap(struct exfat* ef);
+int exfat_flush(struct exfat* ef);
int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size,
bool erase);
uint32_t exfat_count_free_clusters(const struct exfat* ef);
@@ -193,7 +196,7 @@ struct exfat_node* exfat_get_node(struct exfat_node* node);
void exfat_put_node(struct exfat* ef, struct exfat_node* node);
int exfat_cache_directory(struct exfat* ef, struct exfat_node* dir);
void exfat_reset_cache(struct exfat* ef);
-void exfat_flush_node(struct exfat* ef, struct exfat_node* node);
+int exfat_flush_node(struct exfat* ef, struct exfat_node* node);
int exfat_unlink(struct exfat* ef, struct exfat_node* node);
int exfat_rmdir(struct exfat* ef, struct exfat_node* node);
int exfat_mknod(struct exfat* ef, const char* path);