Commit e37a02c7 authored by Aurelien Aptel's avatar Aurelien Aptel Committed by Steve French
Browse files

cifs: modefromsid: write mode ACE first 



DACL should start with mode ACE first but we are putting it at the
end. reorder them to put it first.

Signed-off-by: default avatarAurelien Aptel <aaptel@suse.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 352f2c9a

fs/cifs/cifsacl.c

+19 −17
Original line number Diff line number Diff line
@@ -809,30 +809,21 @@ static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid, 
			struct cifs_sid *pgrpsid, __u64 nmode, bool modefromsid)

{

	u16 size = 0;

	u32 num_aces = 0;

	struct cifs_acl *pnndacl;



	pnndacl = (struct cifs_acl *)((char *)pndacl + sizeof(struct cifs_acl));



	size += fill_ace_for_sid((struct cifs_ace *) ((char *)pnndacl + size),

					pownersid, nmode, S_IRWXU);

	size += fill_ace_for_sid((struct cifs_ace *)((char *)pnndacl + size),

					pgrpsid, nmode, S_IRWXG);

	size += fill_ace_for_sid((struct cifs_ace *)((char *)pnndacl + size),

					 &sid_everyone, nmode, S_IRWXO);



	/* TBD: Move this ACE to the top of ACE list instead of bottom */

	if (modefromsid) {

		struct cifs_ace *pntace =

			(struct cifs_ace *)((char *)pnndacl + size);

		int i;



		pntace->type = ACCESS_DENIED;

		pntace->type = ACCESS_ALLOWED;

		pntace->flags = 0x0;

		pntace->access_req = 0;

		pntace->sid.num_subauth = 3;

		pntace->sid.revision = 1;

		/* size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth * 4) */

		pntace->size = cpu_to_le16(28);

		size += 28;

		for (i = 0; i < NUM_AUTHS; i++)

			pntace->sid.authority[i] =

				sid_unix_NFS_mode.authority[i];
@@ -840,12 +831,23 @@ static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid, 
		pntace->sid.sub_auth[1] = sid_unix_NFS_mode.sub_auth[1];

		pntace->sid.sub_auth[2] = cpu_to_le32(nmode & 07777);



		pndacl->num_aces = cpu_to_le32(4);

		/* size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth*4) */

		pntace->size = cpu_to_le16(28);

		size += 28;

		num_aces++;

	}



	size += fill_ace_for_sid((struct cifs_ace *) ((char *)pnndacl + size),

					 &sid_unix_NFS_mode, nmode, S_IRWXO);

	} else

		pndacl->num_aces = cpu_to_le32(3);

					pownersid, nmode, S_IRWXU);

	num_aces++;

	size += fill_ace_for_sid((struct cifs_ace *)((char *)pnndacl + size),

					pgrpsid, nmode, S_IRWXG);

	num_aces++;

	size += fill_ace_for_sid((struct cifs_ace *)((char *)pnndacl + size),

					 &sid_everyone, nmode, S_IRWXO);

	num_aces++;



	pndacl->num_aces = cpu_to_le32(num_aces);

	pndacl->size = cpu_to_le16(size + sizeof(struct cifs_acl));



	return 0;

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