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Diffstat (limited to 'fs/exfat/exfat_fs.h')
-rw-r--r--fs/exfat/exfat_fs.h91
1 files changed, 57 insertions, 34 deletions
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index 729ada9e26e8..176fef62574c 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -10,11 +10,10 @@
#include <linux/ratelimit.h>
#include <linux/nls.h>
#include <linux/blkdev.h>
+#include <uapi/linux/exfat.h>
#define EXFAT_ROOT_INO 1
-#define EXFAT_CLUSTERS_UNTRACKED (~0u)
-
/*
* exfat error flags
*/
@@ -30,7 +29,6 @@ enum exfat_error_mode {
enum {
NLS_NAME_NO_LOSSY = 0, /* no lossy */
NLS_NAME_LOSSY = 1 << 0, /* just detected incorrect filename(s) */
- NLS_NAME_OVERLEN = 1 << 1, /* the length is over than its limit */
};
#define EXFAT_HASH_BITS 8
@@ -135,8 +133,7 @@ enum {
#define BITMAP_OFFSET_BIT_IN_SECTOR(sb, ent) (ent & BITS_PER_SECTOR_MASK(sb))
#define BITMAP_OFFSET_BYTE_IN_SECTOR(sb, ent) \
((ent / BITS_PER_BYTE) & ((sb)->s_blocksize - 1))
-#define BITS_PER_BYTE_MASK 0x7
-#define IGNORED_BITS_REMAINED(clu, clu_base) ((1 << ((clu) - (clu_base))) - 1)
+#define IGNORED_BITS_REMAINED(clu, clu_base) ((1UL << ((clu) - (clu_base))) - 1)
#define ES_ENTRY_NUM(name_len) (ES_IDX_LAST_FILENAME(name_len) + 1)
/* 19 entries = 1 file entry + 1 stream entry + 17 filename entries */
@@ -149,6 +146,9 @@ enum {
#define DIR_CACHE_SIZE \
(DIV_ROUND_UP(EXFAT_DEN_TO_B(ES_MAX_ENTRY_NUM), SECTOR_SIZE) + 1)
+/* Superblock flags */
+#define EXFAT_FLAGS_SHUTDOWN 1
+
struct exfat_dentry_namebuf {
char *lfn;
int lfnbuf_len; /* usually MAX_UNINAME_BUF_SIZE */
@@ -201,13 +201,16 @@ struct exfat_entry_set_cache {
#define IS_DYNAMIC_ES(es) ((es)->__bh != (es)->bh)
struct exfat_dir_entry {
+ /* the cluster where file dentry is located */
struct exfat_chain dir;
+ /* the index of file dentry in ->dir */
int entry;
unsigned int type;
unsigned int start_clu;
unsigned char flags;
unsigned short attr;
loff_t size;
+ loff_t valid_size;
unsigned int num_subdirs;
struct timespec64 atime;
struct timespec64 mtime;
@@ -234,6 +237,8 @@ struct exfat_mount_options {
discard:1, /* Issue discard requests on deletions */
keep_last_dots:1; /* Keep trailing periods in paths */
int time_offset; /* Offset of timestamps from UTC (in minutes) */
+ /* Support creating zero-size directory, default: false */
+ bool zero_size_dir;
};
/*
@@ -265,6 +270,8 @@ struct exfat_sb_info {
unsigned int clu_srch_ptr; /* cluster search pointer */
unsigned int used_clusters; /* number of used clusters */
+ unsigned long s_exfat_flags; /* Exfat superblock flags */
+
struct mutex s_lock; /* superblock lock */
struct mutex bitmap_lock; /* bitmap lock */
struct exfat_mount_options options;
@@ -273,7 +280,6 @@ struct exfat_sb_info {
spinlock_t inode_hash_lock;
struct hlist_head inode_hashtable[EXFAT_HASH_SIZE];
-
struct rcu_head rcu;
};
@@ -283,7 +289,9 @@ struct exfat_sb_info {
* EXFAT file system inode in-memory data
*/
struct exfat_inode_info {
+ /* the cluster where file dentry is located */
struct exfat_chain dir;
+ /* the index of file dentry in ->dir */
int entry;
unsigned int type;
unsigned short attr;
@@ -308,15 +316,9 @@ struct exfat_inode_info {
/* for avoiding the race between alloc and free */
unsigned int cache_valid_id;
- /*
- * NOTE: i_size_ondisk is 64bits, so must hold ->inode_lock to access.
- * physically allocated size.
- */
- loff_t i_size_ondisk;
- /* block-aligned i_size (used in cont_write_begin) */
- loff_t i_size_aligned;
/* on-disk position of directory entry or 0 */
loff_t i_pos;
+ loff_t valid_size;
/* hash by i_location */
struct hlist_node i_hash_fat;
/* protect bmap against truncate */
@@ -336,6 +338,11 @@ static inline struct exfat_inode_info *EXFAT_I(struct inode *inode)
return container_of(inode, struct exfat_inode_info, vfs_inode);
}
+static inline int exfat_forced_shutdown(struct super_block *sb)
+{
+ return test_bit(EXFAT_FLAGS_SHUTDOWN, &EXFAT_SB(sb)->s_exfat_flags);
+}
+
/*
* If ->i_mode can't hold 0222 (i.e. ATTR_RO), we use ->i_attrs to
* save ATTR_RO instead of ->i_mode.
@@ -359,10 +366,10 @@ static inline int exfat_mode_can_hold_ro(struct inode *inode)
static inline mode_t exfat_make_mode(struct exfat_sb_info *sbi,
unsigned short attr, mode_t mode)
{
- if ((attr & ATTR_READONLY) && !(attr & ATTR_SUBDIR))
+ if ((attr & EXFAT_ATTR_READONLY) && !(attr & EXFAT_ATTR_SUBDIR))
mode &= ~0222;
- if (attr & ATTR_SUBDIR)
+ if (attr & EXFAT_ATTR_SUBDIR)
return (mode & ~sbi->options.fs_dmask) | S_IFDIR;
return (mode & ~sbi->options.fs_fmask) | S_IFREG;
@@ -374,18 +381,18 @@ static inline unsigned short exfat_make_attr(struct inode *inode)
unsigned short attr = EXFAT_I(inode)->attr;
if (S_ISDIR(inode->i_mode))
- attr |= ATTR_SUBDIR;
+ attr |= EXFAT_ATTR_SUBDIR;
if (exfat_mode_can_hold_ro(inode) && !(inode->i_mode & 0222))
- attr |= ATTR_READONLY;
+ attr |= EXFAT_ATTR_READONLY;
return attr;
}
static inline void exfat_save_attr(struct inode *inode, unsigned short attr)
{
if (exfat_mode_can_hold_ro(inode))
- EXFAT_I(inode)->attr = attr & (ATTR_RWMASK | ATTR_READONLY);
+ EXFAT_I(inode)->attr = attr & (EXFAT_ATTR_RWMASK | EXFAT_ATTR_READONLY);
else
- EXFAT_I(inode)->attr = attr & ATTR_RWMASK;
+ EXFAT_I(inode)->attr = attr & EXFAT_ATTR_RWMASK;
}
static inline bool exfat_is_last_sector_in_cluster(struct exfat_sb_info *sbi,
@@ -415,6 +422,11 @@ static inline bool is_valid_cluster(struct exfat_sb_info *sbi,
return clus >= EXFAT_FIRST_CLUSTER && clus < sbi->num_clusters;
}
+static inline loff_t exfat_ondisk_size(const struct inode *inode)
+{
+ return ((loff_t)inode->i_blocks) << 9;
+}
+
/* super.c */
int exfat_set_volume_dirty(struct super_block *sb);
int exfat_clear_volume_dirty(struct super_block *sb);
@@ -429,8 +441,6 @@ int exfat_ent_get(struct super_block *sb, unsigned int loc,
unsigned int *content);
int exfat_ent_set(struct super_block *sb, unsigned int loc,
unsigned int content);
-int exfat_count_ext_entries(struct super_block *sb, struct exfat_chain *p_dir,
- int entry, struct exfat_dentry *p_entry);
int exfat_chain_cont_cluster(struct super_block *sb, unsigned int chain,
unsigned int len);
int exfat_zeroed_cluster(struct inode *dir, unsigned int clu);
@@ -442,8 +452,9 @@ int exfat_count_num_clusters(struct super_block *sb,
/* balloc.c */
int exfat_load_bitmap(struct super_block *sb);
void exfat_free_bitmap(struct exfat_sb_info *sbi);
-int exfat_set_bitmap(struct inode *inode, unsigned int clu, bool sync);
-void exfat_clear_bitmap(struct inode *inode, unsigned int clu, bool sync);
+int exfat_set_bitmap(struct super_block *sb, unsigned int clu, bool sync);
+int exfat_clear_bitmap(struct super_block *sb, unsigned int clu, bool sync);
+bool exfat_test_bitmap(struct super_block *sb, unsigned int clu);
unsigned int exfat_find_free_bitmap(struct super_block *sb, unsigned int clu);
int exfat_count_used_clusters(struct super_block *sb, unsigned int *ret_count);
int exfat_trim_fs(struct inode *inode, struct fstrim_range *range);
@@ -461,10 +472,14 @@ int exfat_file_fsync(struct file *file, loff_t start, loff_t end, int datasync);
long exfat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
long exfat_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
+int exfat_force_shutdown(struct super_block *sb, u32 flags);
/* namei.c */
extern const struct dentry_operations exfat_dentry_ops;
extern const struct dentry_operations exfat_utf8_dentry_ops;
+int exfat_find_empty_entry(struct inode *inode,
+ struct exfat_chain *p_dir, int num_entries,
+ struct exfat_entry_set_cache *es);
/* cache.c */
int exfat_cache_init(void);
@@ -478,16 +493,14 @@ int exfat_get_cluster(struct inode *inode, unsigned int cluster,
extern const struct inode_operations exfat_dir_inode_operations;
extern const struct file_operations exfat_dir_operations;
unsigned int exfat_get_entry_type(struct exfat_dentry *p_entry);
-int exfat_init_dir_entry(struct inode *inode, struct exfat_chain *p_dir,
- int entry, unsigned int type, unsigned int start_clu,
- unsigned long long size);
-int exfat_init_ext_entry(struct inode *inode, struct exfat_chain *p_dir,
- int entry, int num_entries, struct exfat_uni_name *p_uniname);
-int exfat_remove_entries(struct inode *inode, struct exfat_chain *p_dir,
- int entry, int order, int num_entries);
-int exfat_update_dir_chksum(struct inode *inode, struct exfat_chain *p_dir,
- int entry);
-void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es);
+void exfat_init_dir_entry(struct exfat_entry_set_cache *es,
+ unsigned int type, unsigned int start_clu,
+ unsigned long long size, struct timespec64 *ts);
+void exfat_init_ext_entry(struct exfat_entry_set_cache *es, int num_entries,
+ struct exfat_uni_name *p_uniname);
+void exfat_remove_entries(struct inode *inode, struct exfat_entry_set_cache *es,
+ int order);
+void exfat_update_dir_chksum(struct exfat_entry_set_cache *es);
int exfat_calc_num_entries(struct exfat_uni_name *p_uniname);
int exfat_find_dir_entry(struct super_block *sb, struct exfat_inode_info *ei,
struct exfat_chain *p_dir, struct exfat_uni_name *p_uniname,
@@ -499,9 +512,18 @@ struct exfat_dentry *exfat_get_dentry_cached(struct exfat_entry_set_cache *es,
int num);
int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
struct super_block *sb, struct exfat_chain *p_dir, int entry,
- unsigned int type);
+ unsigned int num_entries);
+#define exfat_get_dentry_set_by_ei(es, sb, ei) \
+ exfat_get_dentry_set(es, sb, &(ei)->dir, (ei)->entry, ES_ALL_ENTRIES)
+int exfat_get_empty_dentry_set(struct exfat_entry_set_cache *es,
+ struct super_block *sb, struct exfat_chain *p_dir, int entry,
+ unsigned int num_entries);
int exfat_put_dentry_set(struct exfat_entry_set_cache *es, int sync);
int exfat_count_dir_entries(struct super_block *sb, struct exfat_chain *p_dir);
+int exfat_read_volume_label(struct super_block *sb,
+ struct exfat_uni_name *label_out);
+int exfat_write_volume_label(struct super_block *sb,
+ struct exfat_uni_name *label);
/* inode.c */
extern const struct inode_operations exfat_file_inode_operations;
@@ -551,6 +573,7 @@ void __exfat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
void exfat_get_entry_time(struct exfat_sb_info *sbi, struct timespec64 *ts,
u8 tz, __le16 time, __le16 date, u8 time_cs);
void exfat_truncate_atime(struct timespec64 *ts);
+void exfat_truncate_inode_atime(struct inode *inode);
void exfat_set_entry_time(struct exfat_sb_info *sbi, struct timespec64 *ts,
u8 *tz, __le16 *time, __le16 *date, u8 *time_cs);
u16 exfat_calc_chksum16(void *data, int len, u16 chksum, int type);
generated by cgit (git 2.34.1) at 2025-12-26 04:25:09 +0000