diff options
| author | Jérémy Lefaure <jeremy.lefaure@lse.epita.fr> | 2017-10-01 21:30:46 +0200 |
|---|---|---|
| committer | Tyler Hicks <tyhicks@canonical.com> | 2017-11-06 19:23:59 +0100 |
| commit | 02f9876ebb5e9cd31013c62b8839508b2dc152f0 (patch) | |
| tree | daba01fc309974a4da5457b2b5d382861a3a9594 /fs/ecryptfs | |
| parent | ecryptfs: Adjust four checks for null pointers (diff) | |
| download | linux-02f9876ebb5e9cd31013c62b8839508b2dc152f0.tar.xz linux-02f9876ebb5e9cd31013c62b8839508b2dc152f0.zip | |
ecryptfs: use ARRAY_SIZE
Using the ARRAY_SIZE macro improves the readability of the code.
Found with Coccinelle with the following semantic patch:
@r depends on (org || report)@
type T;
T[] E;
position p;
@@
(
(sizeof(E)@p /sizeof(*E))
|
(sizeof(E)@p /sizeof(E[...]))
|
(sizeof(E)@p /sizeof(T))
)
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Diffstat (limited to 'fs/ecryptfs')
| -rw-r--r-- | fs/ecryptfs/crypto.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index 1cd0902bc936..846ca150d52e 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -36,6 +36,7 @@ #include <linux/scatterlist.h> #include <linux/slab.h> #include <asm/unaligned.h> +#include <linux/kernel.h> #include "ecryptfs_kernel.h" #define DECRYPT 0 @@ -884,8 +885,7 @@ static int ecryptfs_process_flags(struct ecryptfs_crypt_stat *crypt_stat, u32 flags; flags = get_unaligned_be32(page_virt); - for (i = 0; i < ((sizeof(ecryptfs_flag_map) - / sizeof(struct ecryptfs_flag_map_elem))); i++) + for (i = 0; i < ARRAY_SIZE(ecryptfs_flag_map); i++) if (flags & ecryptfs_flag_map[i].file_flag) { crypt_stat->flags |= ecryptfs_flag_map[i].local_flag; } else @@ -922,8 +922,7 @@ void ecryptfs_write_crypt_stat_flags(char *page_virt, u32 flags = 0; int i; - for (i = 0; i < ((sizeof(ecryptfs_flag_map) - / sizeof(struct ecryptfs_flag_map_elem))); i++) + for (i = 0; i < ARRAY_SIZE(ecryptfs_flag_map); i++) if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag) flags |= ecryptfs_flag_map[i].file_flag; /* Version is in top 8 bits of the 32-bit flag vector */ |