diff options
author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2013-07-25 05:44:02 +0900 |
---|---|---|
committer | James Morris <james.l.morris@oracle.com> | 2013-07-25 19:30:03 +1000 |
commit | 9548906b2bb7ff09e12c013a55d669bef2c8e121 (patch) | |
tree | b75ba2bc69d82c1040cac0ea9113a17b39e82b93 | |
parent | be0306bcc3a0b0725b0f99b06d56a29a6d906b7c (diff) | |
download | linux-9548906b2bb7ff09e12c013a55d669bef2c8e121.tar.bz2 |
xattr: Constify ->name member of "struct xattr".
Since everybody sets kstrdup()ed constant string to "struct xattr"->name but
nobody modifies "struct xattr"->name , we can omit kstrdup() and its failure
checking by constifying ->name member of "struct xattr".
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Joel Becker <jlbec@evilplan.org> [ocfs2]
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Reviewed-by: Paul Moore <paul@paul-moore.com>
Tested-by: Paul Moore <paul@paul-moore.com>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
-rw-r--r-- | fs/ocfs2/xattr.h | 2 | ||||
-rw-r--r-- | include/linux/security.h | 8 | ||||
-rw-r--r-- | include/linux/xattr.h | 2 | ||||
-rw-r--r-- | include/uapi/linux/reiserfs_xattr.h | 2 | ||||
-rw-r--r-- | security/capability.c | 2 | ||||
-rw-r--r-- | security/integrity/evm/evm_main.c | 2 | ||||
-rw-r--r-- | security/security.c | 8 | ||||
-rw-r--r-- | security/selinux/hooks.c | 17 | ||||
-rw-r--r-- | security/smack/smack_lsm.c | 9 |
9 files changed, 21 insertions, 31 deletions
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h index e5c7f15465b4..19f134e896a9 100644 --- a/fs/ocfs2/xattr.h +++ b/fs/ocfs2/xattr.h @@ -32,7 +32,7 @@ enum ocfs2_xattr_type { struct ocfs2_security_xattr_info { int enable; - char *name; + const char *name; void *value; size_t value_len; }; diff --git a/include/linux/security.h b/include/linux/security.h index 7ce53ae1266b..9d37e2b9d3ec 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1492,7 +1492,7 @@ struct security_operations { int (*inode_alloc_security) (struct inode *inode); void (*inode_free_security) (struct inode *inode); int (*inode_init_security) (struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, + const struct qstr *qstr, const char **name, void **value, size_t *len); int (*inode_create) (struct inode *dir, struct dentry *dentry, umode_t mode); @@ -1770,7 +1770,7 @@ int security_inode_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr, initxattrs initxattrs, void *fs_data); int security_old_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, + const struct qstr *qstr, const char **name, void **value, size_t *len); int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); int security_inode_link(struct dentry *old_dentry, struct inode *dir, @@ -2094,8 +2094,8 @@ static inline int security_inode_init_security(struct inode *inode, static inline int security_old_inode_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr, - char **name, void **value, - size_t *len) + const char **name, + void **value, size_t *len) { return -EOPNOTSUPP; } diff --git a/include/linux/xattr.h b/include/linux/xattr.h index fdbafc6841cf..91b0a68d38dc 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -31,7 +31,7 @@ struct xattr_handler { }; struct xattr { - char *name; + const char *name; void *value; size_t value_len; }; diff --git a/include/uapi/linux/reiserfs_xattr.h b/include/uapi/linux/reiserfs_xattr.h index d8ce17c2459a..38fdd648be21 100644 --- a/include/uapi/linux/reiserfs_xattr.h +++ b/include/uapi/linux/reiserfs_xattr.h @@ -16,7 +16,7 @@ struct reiserfs_xattr_header { }; struct reiserfs_security_handle { - char *name; + const char *name; void *value; size_t length; }; diff --git a/security/capability.c b/security/capability.c index 32b515766df1..dbeb9bc27b24 100644 --- a/security/capability.c +++ b/security/capability.c @@ -129,7 +129,7 @@ static void cap_inode_free_security(struct inode *inode) } static int cap_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, + const struct qstr *qstr, const char **name, void **value, size_t *len) { return -EOPNOTSUPP; diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c index df0fa451a871..af9b6852f4e1 100644 --- a/security/integrity/evm/evm_main.c +++ b/security/integrity/evm/evm_main.c @@ -418,7 +418,7 @@ int evm_inode_init_security(struct inode *inode, evm_xattr->value = xattr_data; evm_xattr->value_len = sizeof(*xattr_data); - evm_xattr->name = kstrdup(XATTR_EVM_SUFFIX, GFP_NOFS); + evm_xattr->name = XATTR_EVM_SUFFIX; return 0; out: kfree(xattr_data); diff --git a/security/security.c b/security/security.c index 94b35aef6871..4dc31f4f2700 100644 --- a/security/security.c +++ b/security/security.c @@ -348,10 +348,10 @@ int security_inode_init_security(struct inode *inode, struct inode *dir, if (unlikely(IS_PRIVATE(inode))) return 0; - memset(new_xattrs, 0, sizeof new_xattrs); if (!initxattrs) return security_ops->inode_init_security(inode, dir, qstr, NULL, NULL, NULL); + memset(new_xattrs, 0, sizeof(new_xattrs)); lsm_xattr = new_xattrs; ret = security_ops->inode_init_security(inode, dir, qstr, &lsm_xattr->name, @@ -366,16 +366,14 @@ int security_inode_init_security(struct inode *inode, struct inode *dir, goto out; ret = initxattrs(inode, new_xattrs, fs_data); out: - for (xattr = new_xattrs; xattr->name != NULL; xattr++) { - kfree(xattr->name); + for (xattr = new_xattrs; xattr->value != NULL; xattr++) kfree(xattr->value); - } return (ret == -EOPNOTSUPP) ? 0 : ret; } EXPORT_SYMBOL(security_inode_init_security); int security_old_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, + const struct qstr *qstr, const char **name, void **value, size_t *len) { if (unlikely(IS_PRIVATE(inode))) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index c956390a9136..a5091ec06aa6 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2587,7 +2587,8 @@ static int selinux_dentry_init_security(struct dentry *dentry, int mode, } static int selinux_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, + const struct qstr *qstr, + const char **name, void **value, size_t *len) { const struct task_security_struct *tsec = current_security(); @@ -2595,7 +2596,7 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir, struct superblock_security_struct *sbsec; u32 sid, newsid, clen; int rc; - char *namep = NULL, *context; + char *context; dsec = dir->i_security; sbsec = dir->i_sb->s_security; @@ -2631,19 +2632,13 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir, if (!ss_initialized || !(sbsec->flags & SE_SBLABELSUPP)) return -EOPNOTSUPP; - if (name) { - namep = kstrdup(XATTR_SELINUX_SUFFIX, GFP_NOFS); - if (!namep) - return -ENOMEM; - *name = namep; - } + if (name) + *name = XATTR_SELINUX_SUFFIX; if (value && len) { rc = security_sid_to_context_force(newsid, &context, &clen); - if (rc) { - kfree(namep); + if (rc) return rc; - } *value = context; *len = clen; } diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 3f7682a387b7..a113a779f00c 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -582,7 +582,7 @@ static void smack_inode_free_security(struct inode *inode) * Returns 0 if it all works out, -ENOMEM if there's no memory */ static int smack_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, + const struct qstr *qstr, const char **name, void **value, size_t *len) { struct inode_smack *issp = inode->i_security; @@ -591,11 +591,8 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir, char *dsp = smk_of_inode(dir); int may; - if (name) { - *name = kstrdup(XATTR_SMACK_SUFFIX, GFP_NOFS); - if (*name == NULL) - return -ENOMEM; - } + if (name) + *name = XATTR_SMACK_SUFFIX; if (value) { rcu_read_lock(); |