Deduplicate the exofs file type conversion implementation - file systems
that use the same file types as defined by POSIX do not need to define
their own versions and can use the common helper functions decared in
fs_types.h and implemented in fs_types.c
Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
Signed-off-by: Phillip Potter <phil@xxxxxxxxxxxxxxxx>
---
fs/exofs/dir.c | 48 ++++++++++++++++--------------------------------
1 file changed, 16 insertions(+), 32 deletions(-)
diff --git a/fs/exofs/dir.c b/fs/exofs/dir.c
index f0138674c1ed..7d0550d2bd4a 100644
--- a/fs/exofs/dir.c
+++ b/fs/exofs/dir.c
@@ -204,33 +204,24 @@ exofs_validate_entry(char *base, unsigned offset, unsigned mask)
return (char *)p - base;
}
-static unsigned char exofs_filetype_table[EXOFS_FT_MAX] = {
- [EXOFS_FT_UNKNOWN] = DT_UNKNOWN,
- [EXOFS_FT_REG_FILE] = DT_REG,
- [EXOFS_FT_DIR] = DT_DIR,
- [EXOFS_FT_CHRDEV] = DT_CHR,
- [EXOFS_FT_BLKDEV] = DT_BLK,
- [EXOFS_FT_FIFO] = DT_FIFO,
- [EXOFS_FT_SOCK] = DT_SOCK,
- [EXOFS_FT_SYMLINK] = DT_LNK,
-};
-
-#define S_SHIFT 12
-static unsigned char exofs_type_by_mode[S_IFMT >> S_SHIFT] = {
- [S_IFREG >> S_SHIFT] = EXOFS_FT_REG_FILE,
- [S_IFDIR >> S_SHIFT] = EXOFS_FT_DIR,
- [S_IFCHR >> S_SHIFT] = EXOFS_FT_CHRDEV,
- [S_IFBLK >> S_SHIFT] = EXOFS_FT_BLKDEV,
- [S_IFIFO >> S_SHIFT] = EXOFS_FT_FIFO,
- [S_IFSOCK >> S_SHIFT] = EXOFS_FT_SOCK,
- [S_IFLNK >> S_SHIFT] = EXOFS_FT_SYMLINK,
-};
-
static inline
void exofs_set_de_type(struct exofs_dir_entry *de, struct inode *inode)
{
- umode_t mode = inode->i_mode;
- de->file_type = exofs_type_by_mode[(mode & S_IFMT) >> S_SHIFT];
+ /*
+ * compile-time asserts that generic FT_x types still match
+ * EXOFS_FT_x types
+ */
+ BUILD_BUG_ON(EXOFS_FT_UNKNOWN != FT_UNKNOWN);
+ BUILD_BUG_ON(EXOFS_FT_REG_FILE != FT_REG_FILE);
+ BUILD_BUG_ON(EXOFS_FT_DIR != FT_DIR);
+ BUILD_BUG_ON(EXOFS_FT_CHRDEV != FT_CHRDEV);
+ BUILD_BUG_ON(EXOFS_FT_BLKDEV != FT_BLKDEV);
+ BUILD_BUG_ON(EXOFS_FT_FIFO != FT_FIFO);
+ BUILD_BUG_ON(EXOFS_FT_SOCK != FT_SOCK);
+ BUILD_BUG_ON(EXOFS_FT_SYMLINK != FT_SYMLINK);
+ BUILD_BUG_ON(EXOFS_FT_MAX != FT_MAX);
+
+ de->file_type = fs_umode_to_ftype(inode->i_mode);
}
static int
@@ -280,16 +271,9 @@ exofs_readdir(struct file *file, struct dir_context *ctx)
return -EIO;
}
if (de->inode_no) {
- unsigned char t;
-
- if (de->file_type < EXOFS_FT_MAX)
- t = exofs_filetype_table[de->file_type];
- else
- t = DT_UNKNOWN;
-
if (!dir_emit(ctx, de->name, de->name_len,
le64_to_cpu(de->inode_no),
- t)) {
+ fs_ftype_to_dtype(de->file_type))) {
exofs_put_page(page);
return 0;
}
--
2.17.2
