int orangefs_init_acl(struct inode *inode, struct inode *dir)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct posix_acl *default_acl, *acl;
umode_t mode = inode->i_mode;
int error = 0;
ClearModeFlag(orangefs_inode);
error = posix_acl_create(dir, &mode, &default_acl, &acl);
if (error)
return error;
if (default_acl) {
error = orangefs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
posix_acl_release(default_acl);
}
if (acl) {
if (!error)
error = orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS);
posix_acl_release(acl);
}
/* If mode of the inode was changed, then do a forcible ->setattr */
if (mode != inode->i_mode) {
SetModeFlag(orangefs_inode);
inode->i_mode = mode;
orangefs_flush_inode(inode);
}
return error;
}
/*
* initialize the ACLs of a new inode.
* This needs to be called from pvfs2_get_custom_inode.
* Note that for the root of the PVFS2 file system,
* dir will be NULL! For all others dir will be non-NULL
* However, inode cannot be NULL!
* Returns 0 on success and -ve number on failure.
*/
int pvfs2_init_acl(struct inode *inode, struct inode *dir)
{
struct posix_acl *acl = NULL;
int error = 0;
pvfs2_inode_t *pvfs2_inode = PVFS2_I(inode);
if (dir == NULL)
dir = inode;
ClearModeFlag(pvfs2_inode);
if (!S_ISLNK(inode->i_mode))
{
if (get_acl_flag(inode) == 1)
{
acl = pvfs2_get_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(acl)) {
error = PTR_ERR(acl);
gossip_err("pvfs2_get_acl (default) failed with error %d\n", error);
return error;
}
}
if (!acl && dir != inode)
{
int old_mode = inode->i_mode;
inode->i_mode &= ~current->fs->umask;
gossip_debug(GOSSIP_ACL_DEBUG, "inode->i_mode before %o and "
"after %o\n", old_mode, inode->i_mode);
if (old_mode != inode->i_mode)
SetModeFlag(pvfs2_inode);
}
}
if (get_acl_flag(inode) == 1 && acl)
{
struct posix_acl *clone;
mode_t mode;
if (S_ISDIR(inode->i_mode))
{
error = pvfs2_set_acl(inode, ACL_TYPE_DEFAULT, acl);
if (error) {
gossip_err("pvfs2_set_acl (default) directory failed with "
"error %d\n", error);
ClearModeFlag(pvfs2_inode);
goto cleanup;
}
}
clone = posix_acl_clone(acl, GFP_KERNEL);
error = -ENOMEM;
if (!clone) {
gossip_err("posix_acl_clone failed with ENOMEM\n");
ClearModeFlag(pvfs2_inode);
goto cleanup;
}
mode = inode->i_mode;
error = posix_acl_create_masq(clone, &mode);
if (error >= 0)
{
gossip_debug(GOSSIP_ACL_DEBUG, "posix_acl_create_masq changed mode "
"from %o to %o\n", inode->i_mode, mode);
/*
* Dont do a needless ->setattr() if mode has not changed
*/
if (inode->i_mode != mode)
SetModeFlag(pvfs2_inode);
inode->i_mode = mode;
/*
* if this is an ACL that cannot be captured by
* the mode bits, go for the server!
*/
if (error > 0)
{
error = pvfs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
gossip_debug(GOSSIP_ACL_DEBUG, "pvfs2_set_acl (access) returned %d\n", error);
}
}
posix_acl_release(clone);
}
/* If mode of the inode was changed, then do a forcible ->setattr */
if (ModeFlag(pvfs2_inode))
pvfs2_flush_inode(inode);
cleanup:
posix_acl_release(acl);
return error;
}