Map NT perms to a UNIX mode_t.
****************************************************************************/
-#define FILE_SPECIFIC_READ_BITS (FILE_READ_DATA|FILE_READ_EA|FILE_READ_ATTRIBUTES)
-#define FILE_SPECIFIC_WRITE_BITS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA|FILE_WRITE_ATTRIBUTES)
+#define FILE_SPECIFIC_READ_BITS (FILE_READ_DATA|FILE_READ_EA)
+#define FILE_SPECIFIC_WRITE_BITS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA)
#define FILE_SPECIFIC_EXECUTE_BITS (FILE_EXECUTE)
static mode_t map_nt_perms( uint32 *mask, int type)
****************************************************************************/
static bool ensure_canon_entry_valid(canon_ace **pp_ace,
- const struct share_params *params,
- const bool is_directory,
- const DOM_SID *pfile_owner_sid,
- const DOM_SID *pfile_grp_sid,
- const SMB_STRUCT_STAT *pst,
- bool setting_acl)
+ const struct share_params *params,
+ const bool is_directory,
+ const DOM_SID *pfile_owner_sid,
+ const DOM_SID *pfile_grp_sid,
+ const SMB_STRUCT_STAT *pst,
+ bool setting_acl)
{
canon_ace *pace;
bool got_user = False;
pace->unix_ug.uid = pst->st_ex_uid;
pace->trustee = *pfile_owner_sid;
pace->attr = ALLOW_ACE;
+ /* Start with existing permissions, principle of least
+ surprises for the user. */
+ pace->perms = pst->st_ex_mode;
if (setting_acl) {
/* See if the owning user is in any of the other groups in
- the ACE. If so, OR in the permissions from that group. */
+ the ACE, or if there's a matching user entry.
+ If so, OR in the permissions from that entry. */
- bool group_matched = False;
canon_ace *pace_iter;
for (pace_iter = *pp_ace; pace_iter; pace_iter = pace_iter->next) {
- if (pace_iter->type == SMB_ACL_GROUP_OBJ || pace_iter->type == SMB_ACL_GROUP) {
+ if (pace_iter->type == SMB_ACL_USER &&
+ pace_iter->unix_ug.uid == pace->unix_ug.uid) {
+ pace->perms |= pace_iter->perms;
+ } else if (pace_iter->type == SMB_ACL_GROUP_OBJ || pace_iter->type == SMB_ACL_GROUP) {
if (uid_entry_in_group(pace, pace_iter)) {
pace->perms |= pace_iter->perms;
- group_matched = True;
}
}
}
- /* If we only got an "everyone" perm, just use that. */
- if (!group_matched) {
+ if (pace->perms == 0) {
+ /* If we only got an "everyone" perm, just use that. */
if (got_other)
pace->perms = pace_other->perms;
- else
- pace->perms = 0;
}
apply_default_perms(params, is_directory, pace, S_IRUSR);
Check if a POSIX ACL has the required SMB_ACL_USER_OBJ and SMB_ACL_GROUP_OBJ entries.
If it does not have them, check if there are any entries where the trustee is the
file owner or the owning group, and map these to SMB_ACL_USER_OBJ and SMB_ACL_GROUP_OBJ.
+ Note we must not do this to default directory ACLs.
****************************************************************************/
static void check_owning_objs(canon_ace *ace, DOM_SID *pfile_owner_sid, DOM_SID *pfile_grp_sid)
DEBUG(10,("check_owning_objs: ACL is missing an owning group entry.\n"));
}
-/****************************************************************************
- If an ACE entry is SMB_ACL_USER_OBJ and not CREATOR_OWNER, map to SMB_ACL_USER.
- If an ACE entry is SMB_ACL_GROUP_OBJ and not CREATOR_GROUP, map to SMB_ACL_GROUP
-****************************************************************************/
-
-static bool dup_owning_ace(canon_ace *dir_ace, canon_ace *ace)
-{
- /* dir ace must be followings.
- SMB_ACL_USER_OBJ : trustee(CREATOR_OWNER) -> Posix ACL d:u::perm
- SMB_ACL_USER : not trustee -> Posix ACL u:user:perm
- SMB_ACL_USER_OBJ : trustee -> convert to SMB_ACL_USER : trustee
- Posix ACL u:trustee:perm
-
- SMB_ACL_GROUP_OBJ: trustee(CREATOR_GROUP) -> Posix ACL d:g::perm
- SMB_ACL_GROUP : not trustee -> Posix ACL g:group:perm
- SMB_ACL_GROUP_OBJ: trustee -> convert to SMB_ACL_GROUP : trustee
- Posix ACL g:trustee:perm
- */
-
- if (ace->type == SMB_ACL_USER_OBJ &&
- !(sid_equal(&ace->trustee, &global_sid_Creator_Owner))) {
- canon_ace *dup_ace = dup_canon_ace(ace);
-
- if (dup_ace == NULL) {
- return false;
- }
- dup_ace->type = SMB_ACL_USER;
- DLIST_ADD_END(dir_ace, dup_ace, canon_ace *);
- }
-
- if (ace->type == SMB_ACL_GROUP_OBJ &&
- !(sid_equal(&ace->trustee, &global_sid_Creator_Group))) {
- canon_ace *dup_ace = dup_canon_ace(ace);
-
- if (dup_ace == NULL) {
- return false;
- }
- dup_ace->type = SMB_ACL_GROUP;
- DLIST_ADD_END(dir_ace, dup_ace, canon_ace *);
- }
-
- return true;
-}
-
/****************************************************************************
Unpack a SEC_DESC into two canonical ace lists.
****************************************************************************/
if ((psa->flags & (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) ==
(SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) {
+ canon_ace *current_dir_ace = current_ace;
DLIST_ADD_END(dir_ace, current_ace, canon_ace *);
/*
print_canon_ace( current_ace, 0);
}
- /*
- * We have a lossy mapping: directory ACE entries
- * CREATOR_OWNER ------\
- * (map to) +---> SMB_ACL_USER_OBJ
- * owning sid ------/
- *
- * CREATOR_GROUP ------\
- * (map to) +---> SMB_ACL_GROUP_OBJ
- * primary group sid --/
- *
- * on set. And on read of a directory ACL
- *
- * SMB_ACL_USER_OBJ ----> CREATOR_OWNER
- * SMB_ACL_GROUP_OBJ ---> CREATOR_GROUP.
- *
- * Deal with this on set by duplicating
- * owning sid and primary group sid ACE
- * entries into the directory ACL.
- * Fix from Tsukasa Hamano <hamano@osstech.co.jp>.
- */
-
- if (!dup_owning_ace(dir_ace, current_ace)) {
- DEBUG(0,("create_canon_ace_lists: malloc fail !\n"));
- free_canon_ace_list(file_ace);
- free_canon_ace_list(dir_ace);
- return false;
- }
-
/*
* If this is not an inherit only ACE we need to add a duplicate
* to the file acl.
*/
current_ace = NULL;
}
+
+ /*
+ * current_ace is now either owned by file_ace
+ * or is NULL. We can safely operate on current_dir_ace
+ * to treat mapping for default acl entries differently
+ * than access acl entries.
+ */
+
+ if (current_dir_ace->owner_type == UID_ACE) {
+ /*
+ * We already decided above this is a uid,
+ * for default acls ace's only CREATOR_OWNER
+ * maps to ACL_USER_OBJ. All other uid
+ * ace's are ACL_USER.
+ */
+ if (sid_equal(¤t_dir_ace->trustee,
+ &global_sid_Creator_Owner)) {
+ current_dir_ace->type = SMB_ACL_USER_OBJ;
+ } else {
+ current_dir_ace->type = SMB_ACL_USER;
+ }
+ }
+
+ if (current_dir_ace->owner_type == GID_ACE) {
+ /*
+ * We already decided above this is a gid,
+ * for default acls ace's only CREATOR_GROUP
+ * maps to ACL_GROUP_OBJ. All other uid
+ * ace's are ACL_GROUP.
+ */
+ if (sid_equal(¤t_dir_ace->trustee,
+ &global_sid_Creator_Group)) {
+ current_dir_ace->type = SMB_ACL_GROUP_OBJ;
+ } else {
+ current_dir_ace->type = SMB_ACL_GROUP;
+ }
+ }
}
}
dir_ace = NULL;
} else {
/*
- * Check if we have SMB_ACL_USER_OBJ and SMB_ACL_GROUP_OBJ entries in each
- * ACL. If we don't have them, check if any SMB_ACL_USER/SMB_ACL_GROUP
- * entries can be converted to *_OBJ. Usually we will already have these
- * entries in the Default ACL, and the Access ACL will not have them.
+ * Check if we have SMB_ACL_USER_OBJ and SMB_ACL_GROUP_OBJ entries in
+ * the file ACL. If we don't have them, check if any SMB_ACL_USER/SMB_ACL_GROUP
+ * entries can be converted to *_OBJ. Don't do this for the default
+ * ACL, we will create them separately for this if needed inside
+ * ensure_canon_entry_valid().
*/
if (file_ace) {
check_owning_objs(file_ace, pfile_owner_sid, pfile_grp_sid);
}
- if (dir_ace) {
- check_owning_objs(dir_ace, pfile_owner_sid, pfile_grp_sid);
- }
}
*ppfile_ace = file_ace;
*pp_ace_list = ace_list;
}
-/****************************************************************************
- Create a default mode that will be used if a security descriptor entry has
- no user/group/world entries.
-****************************************************************************/
-
-static mode_t create_default_mode(files_struct *fsp, bool interitable_mode)
-{
- int snum = SNUM(fsp->conn);
- mode_t and_bits = (mode_t)0;
- mode_t or_bits = (mode_t)0;
- mode_t mode;
-
- if (interitable_mode) {
- mode = unix_mode(fsp->conn, FILE_ATTRIBUTE_ARCHIVE,
- fsp->fsp_name, NULL);
- } else {
- mode = S_IRUSR;
- }
-
- if (fsp->is_directory)
- mode |= (S_IWUSR|S_IXUSR);
-
- /*
- * Now AND with the create mode/directory mode bits then OR with the
- * force create mode/force directory mode bits.
- */
-
- if (fsp->is_directory) {
- and_bits = lp_dir_security_mask(snum);
- or_bits = lp_force_dir_security_mode(snum);
- } else {
- and_bits = lp_security_mask(snum);
- or_bits = lp_force_security_mode(snum);
- }
-
- return ((mode & and_bits)|or_bits);
-}
-
/****************************************************************************
Unpack a SEC_DESC into two canonical ace lists. We don't depend on this
succeeding.
uint32 security_info_sent,
const SEC_DESC *psd)
{
- SMB_STRUCT_STAT st;
canon_ace *file_ace = NULL;
canon_ace *dir_ace = NULL;
print_canon_ace_list( "file ace - before valid", file_ace);
- st = *pst;
-
- /*
- * A default 3 element mode entry for a file should be r-- --- ---.
- * A default 3 element mode entry for a directory should be rwx --- ---.
- */
-
- st.st_ex_mode = create_default_mode(fsp, False);
-
if (!ensure_canon_entry_valid(&file_ace, fsp->conn->params,
- fsp->is_directory, pfile_owner_sid, pfile_grp_sid, &st, True)) {
+ fsp->is_directory, pfile_owner_sid, pfile_grp_sid, pst, True)) {
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
return False;
print_canon_ace_list( "dir ace - before valid", dir_ace);
- /*
- * A default inheritable 3 element mode entry for a directory should be the
- * mode Samba will use to create a file within. Ensure user rwx bits are set if
- * it's a directory.
- */
-
- st.st_ex_mode = create_default_mode(fsp, True);
-
if (dir_ace && !ensure_canon_entry_valid(&dir_ace, fsp->conn->params,
- fsp->is_directory, pfile_owner_sid, pfile_grp_sid, &st, True)) {
+ fsp->is_directory, pfile_owner_sid, pfile_grp_sid, pst, True)) {
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
return False;
Check if the current user group list contains a given group.
****************************************************************************/
-static bool current_user_in_group(gid_t gid)
+bool current_user_in_group(gid_t gid)
{
int i;
return -1;
}
- if (!NT_STATUS_IS_OK(open_file_fchmod(NULL, conn, smb_fname, &fsp))) {
+ if (!NT_STATUS_IS_OK(open_file_fchmod(conn, smb_fname, &fsp))) {
return -1;
}
}
unbecome_root();
- close_file_fchmod(NULL, fsp);
+ close_file(NULL, fsp, NORMAL_CLOSE);
return ret;
}
git.samba.org / samba.git / blobdiff