diff options
| -rw-r--r-- | source3/modules/nfs4_acls.c | 73 |
1 files changed, 59 insertions, 14 deletions
diff --git a/source3/modules/nfs4_acls.c b/source3/modules/nfs4_acls.c index 7303d0b08e..bbde53236b 100644 --- a/source3/modules/nfs4_acls.c +++ b/source3/modules/nfs4_acls.c @@ -52,6 +52,57 @@ typedef struct _SMB_ACL4_INT_T SMB_ACE4_INT_T *last; } SMB_ACL4_INT_T; +/************************************************ + Split the ACE flag mapping between nfs4 and Windows + into two separate functions rather than trying to do + it inline. Allows us to carefully control what flags + are mapped to what in one place. +************************************************/ + +static uint32_t map_nfs4_ace_flags_to_windows_ace_flags(uint32_t nfs4_ace_flags) +{ + uint32_t win_ace_flags = 0; + + /* The nfs4 flags <= 0xf map perfectly. */ + win_ace_flags = nfs4_ace_flags & (SEC_ACE_FLAG_OBJECT_INHERIT| + SEC_ACE_FLAG_CONTAINER_INHERIT| + SEC_ACE_FLAG_NO_PROPAGATE_INHERIT| + SEC_ACE_FLAG_INHERIT_ONLY); + + /* flags greater than 0xf have diverged :-(. */ + /* See the nfs4 ace flag definitions here: + http://www.ietf.org/rfc/rfc3530.txt. + And the Windows ace flag definitions here: + librpc/idl/security.idl. */ + if (nfs4_ace_flags & SMB_ACE4_INHERITED_ACE) { + win_ace_flags |= SEC_ACE_FLAG_INHERITED_ACE; + } + + return win_ace_flags; +} + +static uint32_t map_windows_ace_flags_to_nfs4_ace_flags(uint32_t win_ace_flags) +{ + uint32_t nfs4_ace_flags = 0; + + /* The windows flags <= 0xf map perfectly. */ + nfs4_ace_flags = win_ace_flags & (SMB_ACE4_FILE_INHERIT_ACE| + SMB_ACE4_DIRECTORY_INHERIT_ACE| + SMB_ACE4_NO_PROPAGATE_INHERIT_ACE| + SMB_ACE4_INHERIT_ONLY_ACE); + + /* flags greater than 0xf have diverged :-(. */ + /* See the nfs4 ace flag definitions here: + http://www.ietf.org/rfc/rfc3530.txt. + And the Windows ace flag definitions here: + librpc/idl/security.idl. */ + if (win_ace_flags & SEC_ACE_FLAG_INHERITED_ACE) { + nfs4_ace_flags |= SMB_ACE4_INHERITED_ACE; + } + + return nfs4_ace_flags; +} + static SMB_ACL4_INT_T *get_validated_aclint(SMB4ACL_T *theacl) { SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)theacl; @@ -234,7 +285,7 @@ static bool smbacl4_nfs42win(TALLOC_CTX *mem_ctx, SMB4ACL_T *theacl, /* in */ uint32_t mask; struct dom_sid sid; SMB_ACE4PROP_T *ace = &aceint->prop; - uint32_t mapped_ace_flags; + uint32_t win_ace_flags; DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, " "who: %d\n", aceint->magic, ace->aceType, ace->flags, @@ -271,28 +322,25 @@ static bool smbacl4_nfs42win(TALLOC_CTX *mem_ctx, SMB4ACL_T *theacl, /* in */ ace->aceMask |= SMB_ACE4_DELETE_CHILD; } - mapped_ace_flags = ace->aceFlags & 0xf; - if (ace->aceFlags & SMB_ACE4_INHERITED_ACE) { - mapped_ace_flags |= SEC_ACE_FLAG_INHERITED_ACE; - } - if (!is_directory && (mapped_ace_flags & (SMB_ACE4_FILE_INHERIT_ACE|SMB_ACE4_DIRECTORY_INHERIT_ACE))) { + win_ace_flags = map_nfs4_ace_flags_to_windows_ace_flags(ace->aceFlags); + if (!is_directory && (win_ace_flags & (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT))) { /* * GPFS sets inherits dir_inhert and file_inherit flags * to files, too, which confuses windows, and seems to * be wrong anyways. ==> Map these bits away for files. */ DEBUG(10, ("removing inherit flags from nfs4 ace\n")); - mapped_ace_flags &= ~(SMB_ACE4_FILE_INHERIT_ACE|SMB_ACE4_DIRECTORY_INHERIT_ACE); + win_ace_flags &= ~(SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT); } - DEBUG(10, ("mapped ace flags: 0x%x => 0x%x\n", - ace->aceFlags, mapped_ace_flags)); + DEBUG(10, ("Windows mapped ace flags: 0x%x => 0x%x\n", + ace->aceFlags, win_ace_flags)); /* Windows clients expect SYNC on acls to correctly allow rename. See bug #7909. */ mask = ace->aceMask | SMB_ACE4_SYNCHRONIZE; init_sec_ace(&nt_ace_list[good_aces++], &sid, ace->aceType, mask, - mapped_ace_flags); + win_ace_flags); } *ppnt_ace_list = nt_ace_list; @@ -566,10 +614,7 @@ static bool smbacl4_fill_ace4( memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T)); ace_v4->aceType = ace_nt->type; /* only ACCESS|DENY supported right now */ - ace_v4->aceFlags = ace_nt->flags & SEC_ACE_FLAG_VALID_INHERIT; - if (ace_nt->flags & SEC_ACE_FLAG_INHERITED_ACE) { - ace_v4->aceFlags |= SMB_ACE4_INHERITED_ACE; - } + ace_v4->aceFlags = map_windows_ace_flags_to_nfs4_ace_flags(ace_nt->flags); ace_v4->aceMask = ace_nt->access_mask & (SEC_STD_ALL | SEC_FILE_ALL); |