int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, int *i_mode)
{
struct posix_acl *acl, *clone;
int rc;
cache_no_acl(inode);
if (S_ISLNK(*i_mode))
return 0; /* Symlink always has no-ACL */
acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl) {
*i_mode &= ~current_umask();
} else {
if (S_ISDIR(*i_mode))
set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
if (!clone)
return -ENOMEM;
rc = posix_acl_create_masq(clone, (mode_t *)i_mode);
if (rc < 0) {
posix_acl_release(clone);
return rc;
}
if (rc > 0)
set_cached_acl(inode, ACL_TYPE_ACCESS, clone);
posix_acl_release(clone);
}
return 0;
}
int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, umode_t *i_mode)
{
struct posix_acl *acl;
int rc;
cache_no_acl(inode);
if (S_ISLNK(*i_mode))
return 0; /* Symlink always has no-ACL */
acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl) {
*i_mode &= ~current_umask();
} else {
if (S_ISDIR(*i_mode))
set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
rc = posix_acl_create(&acl, GFP_KERNEL, i_mode);
if (rc < 0)
return rc;
if (rc > 0)
set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
posix_acl_release(acl);
}
return 0;
}
static int jffs2_acl_getxattr(struct inode *inode, int type, void *buffer, size_t size)
{
struct posix_acl *acl;
int rc;
acl = jffs2_get_acl(inode, type);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl)
return -ENODATA;
rc = posix_acl_to_xattr(acl, buffer, size);
posix_acl_release(acl);
return rc;
}
static int jffs2_check_acl(struct inode *inode, int mask)
{
struct posix_acl *acl;
int rc;
acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
rc = posix_acl_permission(inode, acl, mask);
posix_acl_release(acl);
return rc;
}
return -EAGAIN;
}
int jffs2_acl_chmod(struct inode *inode)
{
struct posix_acl *acl;
int rc;
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;
acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl) || !acl)
return PTR_ERR(acl);
rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
if (rc)
return rc;
rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, acl);
posix_acl_release(acl);
return rc;
}
int jffs2_check_acl(struct inode *inode, int mask, unsigned int flags)
{
struct posix_acl *acl;
int rc;
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
rc = posix_acl_permission(inode, acl, mask);
posix_acl_release(acl);
return rc;
}
return -EAGAIN;
}
static int jffs2_acl_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
struct posix_acl *acl;
int rc;
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 -ENODATA;
rc = posix_acl_to_xattr(acl, buffer, size);
posix_acl_release(acl);
return rc;
}
int jffs2_acl_chmod(struct inode *inode)
{
struct posix_acl *acl, *clone;
int rc;
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;
acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl) || !acl)
return PTR_ERR(acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
posix_acl_release(acl);
if (!clone)
return -ENOMEM;
rc = posix_acl_chmod_masq(clone, inode->i_mode);
if (!rc)
rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
posix_acl_release(clone);
return rc;
}
int jffs2_init_acl(struct inode *inode, struct inode *dir)
{
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct posix_acl *acl = NULL, *clone;
mode_t mode;
int rc = 0;
f->i_acl_access = JFFS2_ACL_NOT_CACHED;
f->i_acl_default = JFFS2_ACL_NOT_CACHED;
if (!S_ISLNK(inode->i_mode)) {
acl = jffs2_get_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl)
inode->i_mode &= ~current->fs->umask;
}
if (acl) {
if (S_ISDIR(inode->i_mode)) {
rc = jffs2_set_acl(inode, ACL_TYPE_DEFAULT, acl);
if (rc)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_KERNEL);
rc = -ENOMEM;
if (!clone)
goto cleanup;
mode = inode->i_mode;
rc = posix_acl_create_masq(clone, &mode);
if (rc >= 0) {
inode->i_mode = mode;
if (rc > 0)
rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
}
posix_acl_release(clone);
}
cleanup:
posix_acl_release(acl);
return rc;
}
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;
if (S_ISLNK(*i_mode))
return 0; /* Symlink always has no-ACL */
acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl) {
*i_mode &= ~current->fs->umask;
} else {
if (S_ISDIR(*i_mode))
jffs2_iset_acl(inode, &f->i_acl_default, acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
if (!clone)
return -ENOMEM;
rc = posix_acl_create_masq(clone, (mode_t *)i_mode);
if (rc < 0) {
posix_acl_release(clone);
return rc;
}
if (rc > 0)
jffs2_iset_acl(inode, &f->i_acl_access, clone);
posix_acl_release(clone);
}
return 0;
}
