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-rw-r--r--source3/include/proto.h4
-rw-r--r--source3/smbd/posix_acls.c110
2 files changed, 114 insertions, 0 deletions
diff --git a/source3/include/proto.h b/source3/include/proto.h
index 650d431b3f..9a8cf67756 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -5123,6 +5123,10 @@ bool set_unix_posix_default_acl(connection_struct *conn, const char *fname,
uint16 num_def_acls, const char *pdata);
bool set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname, uint16 num_acls, const char *pdata);
struct security_descriptor *get_nt_acl_no_snum( TALLOC_CTX *ctx, const char *fname);
+NTSTATUS make_default_filesystem_acl(TALLOC_CTX *ctx,
+ const char *name,
+ SMB_STRUCT_STAT *psbuf,
+ struct security_descriptor **ppdesc);
/* The following definitions come from smbd/process.c */
diff --git a/source3/smbd/posix_acls.c b/source3/smbd/posix_acls.c
index b02a0b1eb5..54fa5bfdfc 100644
--- a/source3/smbd/posix_acls.c
+++ b/source3/smbd/posix_acls.c
@@ -4821,3 +4821,113 @@ struct security_descriptor *get_nt_acl_no_snum( TALLOC_CTX *ctx, const char *fna
return ret_sd;
}
+
+/* Stolen shamelessly from pvfs_default_acl() in source4 :-). */
+
+NTSTATUS make_default_filesystem_acl(TALLOC_CTX *ctx,
+ const char *name,
+ SMB_STRUCT_STAT *psbuf,
+ struct security_descriptor **ppdesc)
+{
+ struct dom_sid owner_sid, group_sid;
+ size_t size = 0;
+ struct security_ace aces[4];
+ uint32_t access_mask = 0;
+ mode_t mode = psbuf->st_ex_mode;
+ struct security_acl *new_dacl = NULL;
+ int idx = 0;
+
+ DEBUG(10,("make_default_filesystem_acl: file %s mode = 0%o\n",
+ name, (int)mode ));
+
+ uid_to_sid(&owner_sid, psbuf->st_ex_uid);
+ gid_to_sid(&group_sid, psbuf->st_ex_gid);
+
+ /*
+ We provide up to 4 ACEs
+ - Owner
+ - Group
+ - Everyone
+ - NT System
+ */
+
+ if (mode & S_IRUSR) {
+ if (mode & S_IWUSR) {
+ access_mask |= SEC_RIGHTS_FILE_ALL;
+ } else {
+ access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
+ }
+ }
+ if (mode & S_IWUSR) {
+ access_mask |= SEC_RIGHTS_FILE_WRITE | SEC_STD_DELETE;
+ }
+
+ init_sec_ace(&aces[idx],
+ &owner_sid,
+ SEC_ACE_TYPE_ACCESS_ALLOWED,
+ access_mask,
+ 0);
+ idx++;
+
+ access_mask = 0;
+ if (mode & S_IRGRP) {
+ access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
+ }
+ if (mode & S_IWGRP) {
+ /* note that delete is not granted - this matches posix behaviour */
+ access_mask |= SEC_RIGHTS_FILE_WRITE;
+ }
+ if (access_mask) {
+ init_sec_ace(&aces[idx],
+ &group_sid,
+ SEC_ACE_TYPE_ACCESS_ALLOWED,
+ access_mask,
+ 0);
+ idx++;
+ }
+
+ access_mask = 0;
+ if (mode & S_IROTH) {
+ access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
+ }
+ if (mode & S_IWOTH) {
+ access_mask |= SEC_RIGHTS_FILE_WRITE;
+ }
+ if (access_mask) {
+ init_sec_ace(&aces[idx],
+ &global_sid_World,
+ SEC_ACE_TYPE_ACCESS_ALLOWED,
+ access_mask,
+ 0);
+ idx++;
+ }
+
+ init_sec_ace(&aces[idx],
+ &global_sid_System,
+ SEC_ACE_TYPE_ACCESS_ALLOWED,
+ SEC_RIGHTS_FILE_ALL,
+ 0);
+ idx++;
+
+ new_dacl = make_sec_acl(ctx,
+ NT4_ACL_REVISION,
+ idx,
+ aces);
+
+ if (!new_dacl) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ *ppdesc = make_sec_desc(ctx,
+ SECURITY_DESCRIPTOR_REVISION_1,
+ SEC_DESC_SELF_RELATIVE|SEC_DESC_DACL_PRESENT,
+ &owner_sid,
+ &group_sid,
+ NULL,
+ new_dacl,
+ &size);
+ if (!*ppdesc) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}