[PATCH 04/13] fscrypto: return bool instead of int where appropriate

From: Eric Biggers
Date: Sun Apr 03 2016 - 01:27:42 EST


Signed-off-by: Eric Biggers <ebiggers3@xxxxxxxxx>
---
fs/crypto/policy.c | 24 ++++++++++++------------
include/linux/fscrypto.h | 12 ++++++------
2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c
index 03a2f50..93244b5 100644
--- a/fs/crypto/policy.c
+++ b/fs/crypto/policy.c
@@ -12,10 +12,10 @@
#include <linux/string.h>
#include <linux/fscrypto.h>

-static int inode_has_encryption_context(struct inode *inode)
+static bool inode_has_encryption_context(struct inode *inode)
{
if (!inode->i_sb->s_cop->get_context)
- return 0;
+ return false;
return (inode->i_sb->s_cop->get_context(inode, NULL, 0L) > 0);
}

@@ -23,18 +23,18 @@ static int inode_has_encryption_context(struct inode *inode)
* check whether the policy is consistent with the encryption context
* for the inode
*/
-static int is_encryption_context_consistent_with_policy(struct inode *inode,
+static bool is_encryption_context_consistent_with_policy(struct inode *inode,
const struct fscrypt_policy *policy)
{
struct fscrypt_context ctx;
int res;

if (!inode->i_sb->s_cop->get_context)
- return 0;
+ return false;

res = inode->i_sb->s_cop->get_context(inode, &ctx, sizeof(ctx));
if (res != sizeof(ctx))
- return 0;
+ return false;

return (memcmp(ctx.master_key_descriptor, policy->master_key_descriptor,
FS_KEY_DESCRIPTOR_SIZE) == 0 &&
@@ -139,7 +139,7 @@ int fscrypt_get_policy(struct inode *inode, struct fscrypt_policy *policy)
}
EXPORT_SYMBOL(fscrypt_get_policy);

-int fscrypt_has_permitted_context(struct inode *parent, struct inode *child)
+bool fscrypt_has_permitted_context(struct inode *parent, struct inode *child)
{
struct fscrypt_info *parent_ci, *child_ci;
int res;
@@ -151,22 +151,22 @@ int fscrypt_has_permitted_context(struct inode *parent, struct inode *child)

/* no restrictions if the parent directory is not encrypted */
if (!parent->i_sb->s_cop->is_encrypted(parent))
- return 1;
+ return true;
/* if the child directory is not encrypted, this is always a problem */
if (!parent->i_sb->s_cop->is_encrypted(child))
- return 0;
+ return false;
res = fscrypt_load_encryption_info(parent);
if (res)
- return 0;
+ return false;
res = fscrypt_load_encryption_info(child);
if (res)
- return 0;
+ return false;
parent_ci = parent->i_crypt_info;
child_ci = child->i_crypt_info;
if (!parent_ci && !child_ci)
- return 1;
+ return true;
if (!parent_ci || !child_ci)
- return 0;
+ return false;

return (memcmp(parent_ci->ci_master_key,
child_ci->ci_master_key,
diff --git a/include/linux/fscrypto.h b/include/linux/fscrypto.h
index 1bf00a5..9a32d7e 100644
--- a/include/linux/fscrypto.h
+++ b/include/linux/fscrypto.h
@@ -177,7 +177,7 @@ struct fscrypt_operations {
int (*get_context)(struct inode *, void *, size_t);
int (*prepare_context)(struct inode *);
int (*set_context)(struct inode *, const void *, size_t, void *);
- int (*dummy_context)(struct inode *);
+ bool (*dummy_context)(struct inode *);
bool (*is_encrypted)(struct inode *);
bool (*empty_dir)(struct inode *);
unsigned (*max_namelen)(struct inode *);
@@ -229,12 +229,12 @@ static inline struct page *fscrypt_control_page(struct page *page)
#endif
}

-static inline int fscrypt_has_encryption_key(struct inode *inode)
+static inline bool fscrypt_has_encryption_key(struct inode *inode)
{
#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
return (inode->i_crypt_info != NULL);
#else
- return 0;
+ return false;
#endif
}

@@ -275,7 +275,7 @@ extern int fscrypt_zeroout_range(struct inode *, pgoff_t, sector_t,
/* policy.c */
extern int fscrypt_set_policy(struct inode *, const struct fscrypt_policy *);
extern int fscrypt_get_policy(struct inode *, struct fscrypt_policy *);
-extern int fscrypt_has_permitted_context(struct inode *, struct inode *);
+extern bool fscrypt_has_permitted_context(struct inode *, struct inode *);
extern int fscrypt_inherit_context(struct inode *, struct inode *,
void *, bool);
/* keyinfo.c */
@@ -355,10 +355,10 @@ static inline int fscrypt_notsupp_get_policy(struct inode *i,
return -EOPNOTSUPP;
}

-static inline int fscrypt_notsupp_has_permitted_context(struct inode *p,
+static inline bool fscrypt_notsupp_has_permitted_context(struct inode *p,
struct inode *i)
{
- return 0;
+ return false;
}

static inline int fscrypt_notsupp_inherit_context(struct inode *p,
--
2.7.4