6.14-stable review patch. If anyone has any objections, please let me know.
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From: Pali Rohár pali@kernel.org
[ Upstream commit ad9364a6835c45c52f47587ffbe0577bb7cd4c5b ]
Currently ->get_acl() callback always create request for OWNER, GROUP and DACL, even when only DACLs was requested by user. Change API callback to request only information for which the caller asked. Therefore when only DACLs requested, then SMB client will prepare and send DACL-only request.
This change fixes retrieving of "system.cifs_acl" and "system.smb3_acl" xattrs to contain only DACL structure as documented.
Note that setting/changing of "system.cifs_acl" and "system.smb3_acl" xattrs already takes only DACL structure and ignores all other fields.
Signed-off-by: Pali Rohár pali@kernel.org Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/client/cifsacl.c | 4 ++-- fs/smb/client/cifssmb.c | 3 +-- fs/smb/client/smb2pdu.c | 4 +--- fs/smb/client/xattr.c | 15 +++++++++++---- 4 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/fs/smb/client/cifsacl.c b/fs/smb/client/cifsacl.c index f9d577f2d59bb..63b3b1290bed2 100644 --- a/fs/smb/client/cifsacl.c +++ b/fs/smb/client/cifsacl.c @@ -1565,7 +1565,7 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, int rc = 0; struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); struct smb_version_operations *ops; - const u32 info = 0; + const u32 info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO;
cifs_dbg(NOISY, "converting ACL to mode for %s\n", path);
@@ -1619,7 +1619,7 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, struct tcon_link *tlink; struct smb_version_operations *ops; bool mode_from_sid, id_from_sid; - const u32 info = 0; + const u32 info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO; bool posix;
tlink = cifs_sb_tlink(cifs_sb); diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c index c2abe79f0dd3b..e90811f321944 100644 --- a/fs/smb/client/cifssmb.c +++ b/fs/smb/client/cifssmb.c @@ -3416,8 +3416,7 @@ CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, /* BB TEST with big acls that might need to be e.g. larger than 16K */ pSMB->MaxSetupCount = 0; pSMB->Fid = fid; /* file handle always le */ - pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | - CIFS_ACL_DACL | info); + pSMB->AclFlags = cpu_to_le32(info); pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ inc_rfc1001_len(pSMB, 11); iov[0].iov_base = (char *)pSMB; diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c index ed3ffcb80aef0..d080c777906b4 100644 --- a/fs/smb/client/smb2pdu.c +++ b/fs/smb/client/smb2pdu.c @@ -3910,12 +3910,10 @@ SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, void **data, u32 *plen, u32 extra_info) { - __u32 additional_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO | - extra_info; *plen = 0;
return query_info(xid, tcon, persistent_fid, volatile_fid, - 0, SMB2_O_INFO_SECURITY, additional_info, + 0, SMB2_O_INFO_SECURITY, extra_info, SMB2_MAX_BUFFER_SIZE, MIN_SEC_DESC_LEN, data, plen); }
diff --git a/fs/smb/client/xattr.c b/fs/smb/client/xattr.c index 58a584f0b27e9..7d49f38f01f3e 100644 --- a/fs/smb/client/xattr.c +++ b/fs/smb/client/xattr.c @@ -320,10 +320,17 @@ static int cifs_xattr_get(const struct xattr_handler *handler, if (pTcon->ses->server->ops->get_acl == NULL) goto out; /* rc already EOPNOTSUPP */
- if (handler->flags == XATTR_CIFS_NTSD_FULL) { - extra_info = SACL_SECINFO; - } else { - extra_info = 0; + switch (handler->flags) { + case XATTR_CIFS_NTSD_FULL: + extra_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO | SACL_SECINFO; + break; + case XATTR_CIFS_NTSD: + extra_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO; + break; + case XATTR_CIFS_ACL: + default: + extra_info = DACL_SECINFO; + break; } pacl = pTcon->ses->server->ops->get_acl(cifs_sb, inode, full_path, &acllen, extra_info);