[RFC][PATCH v3 03/10] hfsplus: use fs_umode_to_dtype() helper

[RFC][PATCH v3 03/10] hfsplus: use fs_umode_to_dtype() helper

[Phillip Potter]

Replace if/else statements with common lookup table 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@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
---
 fs/hfsplus/dir.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index f37662675c3a..7b798a46c8ac 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -223,7 +223,6 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx)
 				break;
 		} else if (type == HFSPLUS_FILE) {
 			u16 mode;
-			unsigned type = DT_UNKNOWN;
 
 			if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
 				pr_err("small file entry\n");
@@ -232,21 +231,10 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx)
 			}
 
 			mode = be16_to_cpu(entry.file.permissions.mode);
-			if (S_ISREG(mode))
-				type = DT_REG;
-			else if (S_ISLNK(mode))
-				type = DT_LNK;
-			else if (S_ISFIFO(mode))
-				type = DT_FIFO;
-			else if (S_ISCHR(mode))
-				type = DT_CHR;
-			else if (S_ISBLK(mode))
-				type = DT_BLK;
-			else if (S_ISSOCK(mode))
-				type = DT_SOCK;
 
 			if (!dir_emit(ctx, strbuf, len,
-				      be32_to_cpu(entry.file.id), type))
+				      be32_to_cpu(entry.file.id),
+				      fs_umode_to_dtype(mode)))
 				break;
 		} else {
 			pr_err("bad catalog entry type\n");
-- 
2.17.2

Re: [RFC][PATCH v3 03/10] hfsplus: use fs_umode_to_dtype() helper

[Viacheslav Dubeyko]

On Sat, 2018-10-27 at 01:53 +0100, Phillip Potter wrote:
> Replace if/else statements with common lookup table 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@gmail.com>
> Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
> ---
>  fs/hfsplus/dir.c | 16 ++--------------
>  1 file changed, 2 insertions(+), 14 deletions(-)
> 
> diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
> index f37662675c3a..7b798a46c8ac 100644
> --- a/fs/hfsplus/dir.c
> +++ b/fs/hfsplus/dir.c
> @@ -223,7 +223,6 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx)
>  				break;
>  		} else if (type == HFSPLUS_FILE) {
>  			u16 mode;
> -			unsigned type = DT_UNKNOWN;
>  
>  			if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
>  				pr_err("small file entry\n");
> @@ -232,21 +231,10 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx)
>  			}
>  
>  			mode = be16_to_cpu(entry.file.permissions.mode);
> -			if (S_ISREG(mode))
> -				type = DT_REG;
> -			else if (S_ISLNK(mode))
> -				type = DT_LNK;
> -			else if (S_ISFIFO(mode))
> -				type = DT_FIFO;
> -			else if (S_ISCHR(mode))
> -				type = DT_CHR;
> -			else if (S_ISBLK(mode))
> -				type = DT_BLK;
> -			else if (S_ISSOCK(mode))
> -				type = DT_SOCK;
>  
>  			if (!dir_emit(ctx, strbuf, len,
> -				      be32_to_cpu(entry.file.id), type))
> +				      be32_to_cpu(entry.file.id),
> +				      fs_umode_to_dtype(mode)))
>  				break;
>  		} else {
>  			pr_err("bad catalog entry type\n");

I don't see any difference with previous state. Looks good. Nice
cleanup.

Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com>

Thanks,
Vyacheslav Dubeyko.