diff options
author | Steven J. Magnani <steve@digidescorp.com> | 2012-07-31 01:42:13 +0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-31 04:25:19 +0400 |
commit | a943ed71c9171fb5e3b256e8022bbedff95cc826 (patch) | |
tree | e4b3a997bac0a802677557dbc52e5a55fb526a28 /fs/fat | |
parent | 497d48bd27ec1c44b4600e8e98a776188f2e11f2 (diff) | |
download | linux-a943ed71c9171fb5e3b256e8022bbedff95cc826.tar.xz |
fat: accessors for msdos_dir_entry 'start' fields
Simplify code by providing accessor functions for the directory entry
start cluster fields.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fat')
-rw-r--r-- | fs/fat/fat.h | 15 | ||||
-rw-r--r-- | fs/fat/inode.c | 12 | ||||
-rw-r--r-- | fs/fat/namei_msdos.c | 11 | ||||
-rw-r--r-- | fs/fat/namei_vfat.c | 11 |
4 files changed, 24 insertions, 25 deletions
diff --git a/fs/fat/fat.h b/fs/fat/fat.h index fc35c5c69136..2deeeb86f331 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -217,6 +217,21 @@ static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len) #endif } +static inline int fat_get_start(const struct msdos_sb_info *sbi, + const struct msdos_dir_entry *de) +{ + int cluster = le16_to_cpu(de->start); + if (sbi->fat_bits == 32) + cluster |= (le16_to_cpu(de->starthi) << 16); + return cluster; +} + +static inline void fat_set_start(struct msdos_dir_entry *de, int cluster) +{ + de->start = cpu_to_le16(cluster); + de->starthi = cpu_to_le16(cluster >> 16); +} + static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len) { #ifdef __BIG_ENDIAN diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 0038b32cb362..05e897fe9866 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -369,10 +369,7 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de) inode->i_op = sbi->dir_ops; inode->i_fop = &fat_dir_operations; - MSDOS_I(inode)->i_start = le16_to_cpu(de->start); - if (sbi->fat_bits == 32) - MSDOS_I(inode)->i_start |= (le16_to_cpu(de->starthi) << 16); - + MSDOS_I(inode)->i_start = fat_get_start(sbi, de); MSDOS_I(inode)->i_logstart = MSDOS_I(inode)->i_start; error = fat_calc_dir_size(inode); if (error < 0) @@ -385,9 +382,7 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de) inode->i_mode = fat_make_mode(sbi, de->attr, ((sbi->options.showexec && !is_exec(de->name + 8)) ? S_IRUGO|S_IWUGO : S_IRWXUGO)); - MSDOS_I(inode)->i_start = le16_to_cpu(de->start); - if (sbi->fat_bits == 32) - MSDOS_I(inode)->i_start |= (le16_to_cpu(de->starthi) << 16); + MSDOS_I(inode)->i_start = fat_get_start(sbi, de); MSDOS_I(inode)->i_logstart = MSDOS_I(inode)->i_start; inode->i_size = le32_to_cpu(de->size); @@ -613,8 +608,7 @@ retry: else raw_entry->size = cpu_to_le32(inode->i_size); raw_entry->attr = fat_make_attrs(inode); - raw_entry->start = cpu_to_le16(MSDOS_I(inode)->i_logstart); - raw_entry->starthi = cpu_to_le16(MSDOS_I(inode)->i_logstart >> 16); + fat_set_start(raw_entry, MSDOS_I(inode)->i_logstart); fat_time_unix2fat(sbi, &inode->i_mtime, &raw_entry->time, &raw_entry->date, NULL); if (sbi->options.isvfat) { diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index 70d993a93805..b0e12bf9f4a1 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -246,8 +246,7 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name, de.ctime_cs = 0; de.time = time; de.date = date; - de.start = cpu_to_le16(cluster); - de.starthi = cpu_to_le16(cluster >> 16); + fat_set_start(&de, cluster); de.size = 0; err = fat_add_entries(dir, &de, 1, sinfo); @@ -530,9 +529,7 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name, mark_inode_dirty(old_inode); if (update_dotdot) { - int start = MSDOS_I(new_dir)->i_logstart; - dotdot_de->start = cpu_to_le16(start); - dotdot_de->starthi = cpu_to_le16(start >> 16); + fat_set_start(dotdot_de, MSDOS_I(new_dir)->i_logstart); mark_buffer_dirty_inode(dotdot_bh, old_inode); if (IS_DIRSYNC(new_dir)) { err = sync_dirty_buffer(dotdot_bh); @@ -572,9 +569,7 @@ error_dotdot: corrupt = 1; if (update_dotdot) { - int start = MSDOS_I(old_dir)->i_logstart; - dotdot_de->start = cpu_to_le16(start); - dotdot_de->starthi = cpu_to_le16(start >> 16); + fat_set_start(dotdot_de, MSDOS_I(old_dir)->i_logstart); mark_buffer_dirty_inode(dotdot_bh, old_inode); corrupt |= sync_dirty_buffer(dotdot_bh); } diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 6cc480652433..6a6d8c0715a1 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -651,8 +651,7 @@ shortname: de->time = de->ctime = time; de->date = de->cdate = de->adate = date; de->ctime_cs = time_cs; - de->start = cpu_to_le16(cluster); - de->starthi = cpu_to_le16(cluster >> 16); + fat_set_start(de, cluster); de->size = 0; out_free: __putname(uname); @@ -965,9 +964,7 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry, mark_inode_dirty(old_inode); if (update_dotdot) { - int start = MSDOS_I(new_dir)->i_logstart; - dotdot_de->start = cpu_to_le16(start); - dotdot_de->starthi = cpu_to_le16(start >> 16); + fat_set_start(dotdot_de, MSDOS_I(new_dir)->i_logstart); mark_buffer_dirty_inode(dotdot_bh, old_inode); if (IS_DIRSYNC(new_dir)) { err = sync_dirty_buffer(dotdot_bh); @@ -1009,9 +1006,7 @@ error_dotdot: corrupt = 1; if (update_dotdot) { - int start = MSDOS_I(old_dir)->i_logstart; - dotdot_de->start = cpu_to_le16(start); - dotdot_de->starthi = cpu_to_le16(start >> 16); + fat_set_start(dotdot_de, MSDOS_I(old_dir)->i_logstart); mark_buffer_dirty_inode(dotdot_bh, old_inode); corrupt |= sync_dirty_buffer(dotdot_bh); } |