size_t s;
size -= sizeof(struct jffs2_acl_header);
- s = size - 4 * sizeof(struct jffs2_acl_entry_short);
- if (s < 0) {
+ if (size < 4 * sizeof(struct jffs2_acl_entry_short)) {
if (size % sizeof(struct jffs2_acl_entry_short))
return -1;
return size / sizeof(struct jffs2_acl_entry_short);
} else {
+ s = size - 4 * sizeof(struct jffs2_acl_entry_short);
if (s % sizeof(struct jffs2_acl_entry))
return -1;
return s / sizeof(struct jffs2_acl_entry) + 4;
return ERR_PTR(-EINVAL);
}
-static struct posix_acl *jffs2_iget_acl(struct inode *inode, struct posix_acl **i_acl)
-{
- struct posix_acl *acl = JFFS2_ACL_NOT_CACHED;
-
- spin_lock(&inode->i_lock);
- if (*i_acl != JFFS2_ACL_NOT_CACHED)
- acl = posix_acl_dup(*i_acl);
- spin_unlock(&inode->i_lock);
- return acl;
-}
-
-static void jffs2_iset_acl(struct inode *inode, struct posix_acl **i_acl, struct posix_acl *acl)
-{
- spin_lock(&inode->i_lock);
- if (*i_acl != JFFS2_ACL_NOT_CACHED)
- posix_acl_release(*i_acl);
- *i_acl = posix_acl_dup(acl);
- spin_unlock(&inode->i_lock);
-}
-
static struct posix_acl *jffs2_get_acl(struct inode *inode, int type)
{
- struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct posix_acl *acl;
char *value = NULL;
int rc, xprefix;
+ acl = get_cached_acl(inode, type);
+ if (acl != ACL_NOT_CACHED)
+ return acl;
+
switch (type) {
case ACL_TYPE_ACCESS:
- acl = jffs2_iget_acl(inode, &f->i_acl_access);
- if (acl != JFFS2_ACL_NOT_CACHED)
- return acl;
xprefix = JFFS2_XPREFIX_ACL_ACCESS;
break;
case ACL_TYPE_DEFAULT:
- acl = jffs2_iget_acl(inode, &f->i_acl_default);
- if (acl != JFFS2_ACL_NOT_CACHED)
- return acl;
xprefix = JFFS2_XPREFIX_ACL_DEFAULT;
break;
default:
- return ERR_PTR(-EINVAL);
+ BUG();
}
rc = do_jffs2_getxattr(inode, xprefix, "", NULL, 0);
if (rc > 0) {
}
if (value)
kfree(value);
- if (!IS_ERR(acl)) {
- switch (type) {
- case ACL_TYPE_ACCESS:
- jffs2_iset_acl(inode, &f->i_acl_access, acl);
- break;
- case ACL_TYPE_DEFAULT:
- jffs2_iset_acl(inode, &f->i_acl_default, acl);
- break;
- }
- }
+ if (!IS_ERR(acl))
+ set_cached_acl(inode, type, acl);
return acl;
}
static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
{
- struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
int rc, xprefix;
if (S_ISLNK(inode->i_mode))
if (inode->i_mode != mode) {
struct iattr attr;
- attr.ia_valid = ATTR_MODE;
+ attr.ia_valid = ATTR_MODE | ATTR_CTIME;
attr.ia_mode = mode;
+ attr.ia_ctime = CURRENT_TIME_SEC;
rc = jffs2_do_setattr(inode, &attr);
if (rc < 0)
return rc;
return -EINVAL;
}
rc = __jffs2_set_acl(inode, xprefix, acl);
- if (!rc) {
- switch(type) {
- case ACL_TYPE_ACCESS:
- jffs2_iset_acl(inode, &f->i_acl_access, acl);
- break;
- case ACL_TYPE_DEFAULT:
- jffs2_iset_acl(inode, &f->i_acl_default, acl);
- break;
- }
- }
+ if (!rc)
+ set_cached_acl(inode, type, acl);
return rc;
}
-static int jffs2_check_acl(struct inode *inode, int mask)
+int jffs2_check_acl(struct inode *inode, int mask)
{
struct posix_acl *acl;
int rc;
return -EAGAIN;
}
-int jffs2_permission(struct inode *inode, int mask)
-{
- return generic_permission(inode, mask, jffs2_check_acl);
-}
-
int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, int *i_mode)
{
- struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct posix_acl *acl, *clone;
int rc;
- f->i_acl_default = NULL;
- f->i_acl_access = NULL;
+ cache_no_acl(inode);
if (S_ISLNK(*i_mode))
return 0; /* Symlink always has no-ACL */
return PTR_ERR(acl);
if (!acl) {
- *i_mode &= ~current->fs->umask;
+ *i_mode &= ~current_umask();
} else {
if (S_ISDIR(*i_mode))
- jffs2_iset_acl(inode, &f->i_acl_default, acl);
+ set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
if (!clone)
return rc;
}
if (rc > 0)
- jffs2_iset_acl(inode, &f->i_acl_access, clone);
+ set_cached_acl(inode, ACL_TYPE_ACCESS, clone);
posix_acl_release(clone);
}
int jffs2_init_acl_post(struct inode *inode)
{
- struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
int rc;
- if (f->i_acl_default) {
- rc = __jffs2_set_acl(inode, JFFS2_XPREFIX_ACL_DEFAULT, f->i_acl_default);
+ if (inode->i_default_acl) {
+ rc = __jffs2_set_acl(inode, JFFS2_XPREFIX_ACL_DEFAULT, inode->i_default_acl);
if (rc)
return rc;
}
- if (f->i_acl_access) {
- rc = __jffs2_set_acl(inode, JFFS2_XPREFIX_ACL_ACCESS, f->i_acl_access);
+ if (inode->i_acl) {
+ rc = __jffs2_set_acl(inode, JFFS2_XPREFIX_ACL_ACCESS, inode->i_acl);
if (rc)
return rc;
}
return 0;
}
-void jffs2_clear_acl(struct jffs2_inode_info *f)
-{
- if (f->i_acl_access && f->i_acl_access != JFFS2_ACL_NOT_CACHED) {
- posix_acl_release(f->i_acl_access);
- f->i_acl_access = JFFS2_ACL_NOT_CACHED;
- }
- if (f->i_acl_default && f->i_acl_default != JFFS2_ACL_NOT_CACHED) {
- posix_acl_release(f->i_acl_default);
- f->i_acl_default = JFFS2_ACL_NOT_CACHED;
- }
-}
-
int jffs2_acl_chmod(struct inode *inode)
{
struct posix_acl *acl, *clone;
return rc;
}
-static size_t jffs2_acl_access_listxattr(struct inode *inode, char *list, size_t list_size,
- const char *name, size_t name_len)
+static size_t jffs2_acl_access_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
{
const int retlen = sizeof(POSIX_ACL_XATTR_ACCESS);
return retlen;
}
-static size_t jffs2_acl_default_listxattr(struct inode *inode, char *list, size_t list_size,
- const char *name, size_t name_len)
+static size_t jffs2_acl_default_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
{
const int retlen = sizeof(POSIX_ACL_XATTR_DEFAULT);
return retlen;
}
-static int jffs2_acl_getxattr(struct inode *inode, int type, void *buffer, size_t size)
+static int jffs2_acl_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
{
struct posix_acl *acl;
int rc;
- acl = jffs2_get_acl(inode, type);
+ if (name[0] != '\0')
+ return -EINVAL;
+
+ acl = jffs2_get_acl(dentry->d_inode, type);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl)
return rc;
}
-static int jffs2_acl_access_getxattr(struct inode *inode, const char *name, void *buffer, size_t size)
-{
- if (name[0] != '\0')
- return -EINVAL;
- return jffs2_acl_getxattr(inode, ACL_TYPE_ACCESS, buffer, size);
-}
-
-static int jffs2_acl_default_getxattr(struct inode *inode, const char *name, void *buffer, size_t size)
-{
- if (name[0] != '\0')
- return -EINVAL;
- return jffs2_acl_getxattr(inode, ACL_TYPE_DEFAULT, buffer, size);
-}
-
-static int jffs2_acl_setxattr(struct inode *inode, int type, const void *value, size_t size)
+static int jffs2_acl_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags, int type)
{
struct posix_acl *acl;
int rc;
- if (!is_owner_or_cap(inode))
+ if (name[0] != '\0')
+ return -EINVAL;
+ if (!is_owner_or_cap(dentry->d_inode))
return -EPERM;
if (value) {
} else {
acl = NULL;
}
- rc = jffs2_set_acl(inode, type, acl);
+ rc = jffs2_set_acl(dentry->d_inode, type, acl);
out:
posix_acl_release(acl);
return rc;
}
-static int jffs2_acl_access_setxattr(struct inode *inode, const char *name,
- const void *buffer, size_t size, int flags)
-{
- if (name[0] != '\0')
- return -EINVAL;
- return jffs2_acl_setxattr(inode, ACL_TYPE_ACCESS, buffer, size);
-}
-
-static int jffs2_acl_default_setxattr(struct inode *inode, const char *name,
- const void *buffer, size_t size, int flags)
-{
- if (name[0] != '\0')
- return -EINVAL;
- return jffs2_acl_setxattr(inode, ACL_TYPE_DEFAULT, buffer, size);
-}
-
-struct xattr_handler jffs2_acl_access_xattr_handler = {
+const struct xattr_handler jffs2_acl_access_xattr_handler = {
.prefix = POSIX_ACL_XATTR_ACCESS,
+ .flags = ACL_TYPE_DEFAULT,
.list = jffs2_acl_access_listxattr,
- .get = jffs2_acl_access_getxattr,
- .set = jffs2_acl_access_setxattr,
+ .get = jffs2_acl_getxattr,
+ .set = jffs2_acl_setxattr,
};
-struct xattr_handler jffs2_acl_default_xattr_handler = {
+const struct xattr_handler jffs2_acl_default_xattr_handler = {
.prefix = POSIX_ACL_XATTR_DEFAULT,
+ .flags = ACL_TYPE_DEFAULT,
.list = jffs2_acl_default_listxattr,
- .get = jffs2_acl_default_getxattr,
- .set = jffs2_acl_default_setxattr,
+ .get = jffs2_acl_getxattr,
+ .set = jffs2_acl_setxattr,
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff