vfs: restore platform specific POSIX sys_acl_set_file() functions

92b149954237a445594c993b79a860c63113d54b removed SMB_VFS_SYS_ACL_SET_FILE() and
all the VFS module implementations. But sys_acl_set_file() in vfs_default calls
into sys_acl_set_file() in sysacls.c which calls back into platform specific
modules.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14619

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Björn Jacke <bjacke@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Jan 28 15:21:02 UTC 2021 on sn-devel-184

(cherry picked from commit c8c2aef0ac613849d641e39193448f3e512caccf)

3 files changed, 164 insertions, 0 deletions

diff --git a/source3/modules/vfs_aixacl.c b/source3/modules/vfs_aixacl.c
index f7493794a45..e6a085cae0f 100644
--- a/source3/modules/vfs_aixacl.c
+++ b/source3/modules/vfs_aixacl.c
@@ -133,6 +133,27 @@ SMB_ACL_T aixacl_sys_acl_get_fd(vfs_handle_struct *handle,
 	return NULL;*/
 }
 
+int aixacl_sys_acl_set_file(vfs_handle_struct *handle,
+			const struct smb_filename *smb_fname,
+			SMB_ACL_TYPE_T type,
+			SMB_ACL_T theacl)
+{
+	struct acl *file_acl = NULL;
+	unsigned int rc;
+
+	file_acl = aixacl_smb_to_aixacl(type, theacl);
+	if (!file_acl)
+		return -1;
+
+	rc = chacl((char *)smb_fname->base_name,file_acl,file_acl->acl_len);
+	DEBUG(10,("errno is %d\n",errno));
+	DEBUG(10,("return code is %d\n",rc));
+	SAFE_FREE(file_acl);
+	DEBUG(10,("Exiting the aixacl_sys_acl_set_file\n"));
+
+	return rc;
+}
+
 int aixacl_sys_acl_set_fd(vfs_handle_struct *handle,
 			    files_struct *fsp,
 			    SMB_ACL_TYPE_T type,
diff --git a/source3/modules/vfs_solarisacl.c b/source3/modules/vfs_solarisacl.c
index b43a57c9c9f..1b3b4ba0706 100644
--- a/source3/modules/vfs_solarisacl.c
+++ b/source3/modules/vfs_solarisacl.c
@@ -135,6 +135,103 @@ SMB_ACL_T solarisacl_sys_acl_get_fd(vfs_handle_struct *handle,
 	return result;
 }
 
+int solarisacl_sys_acl_set_file(vfs_handle_struct *handle,
+				const struct smb_filename *smb_fname_in,
+				SMB_ACL_TYPE_T type,
+				SMB_ACL_T theacl)
+{
+	int ret = -1;
+	SOLARIS_ACL_T solaris_acl = NULL;
+	int count;
+	struct smb_filename *smb_fname = NULL;
+
+	smb_fname = cp_smb_filename_nostream(talloc_tos(), smb_fname_in);
+	if (smb_fname == NULL) {
+		errno = ENOMEM;
+		goto done;
+	}
+
+	DEBUG(10, ("solarisacl_sys_acl_set_file called for file '%s'\n",
+		   smb_fname->base_name));
+
+	if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) {
+		errno = EINVAL;
+		DEBUG(10, ("invalid smb acl type given (%d).\n", type));
+		goto done;
+	}
+	DEBUGADD(10, ("setting %s acl\n",
+		      ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
+
+	if(!smb_acl_to_solaris_acl(theacl, &solaris_acl, &count, type)) {
+		DEBUG(10, ("conversion smb_acl -> solaris_acl failed (%s).\n",
+			   strerror(errno)));
+                goto done;
+	}
+
+	/*
+	 * if the file is a directory, there is extra work to do:
+	 * since the solaris acl call stores both the access acl and
+	 * the default acl as provided, we have to get the acl part
+	 * that has not been specified in "type" from the file first
+	 * and concatenate it with the acl provided.
+	 *
+	 * We can directly use SMB_VFS_STAT here, as if this was a
+	 * POSIX call on a symlink, we've already refused it.
+	 * For a Windows acl mapped call on a symlink, we want to follow
+	 * it.
+	 */
+	ret = SMB_VFS_STAT(handle->conn, smb_fname);
+	if (ret != 0) {
+		DEBUG(10, ("Error in stat call: %s\n", strerror(errno)));
+		goto done;
+	}
+	if (S_ISDIR(smb_fname->st.st_ex_mode)) {
+		SOLARIS_ACL_T other_acl = NULL;
+		int other_count;
+		SMB_ACL_TYPE_T other_type;
+
+		other_type = (type == SMB_ACL_TYPE_ACCESS)
+			? SMB_ACL_TYPE_DEFAULT
+			: SMB_ACL_TYPE_ACCESS;
+		DEBUGADD(10, ("getting acl from filesystem\n"));
+		if (!solaris_acl_get_file(smb_fname->base_name,
+					&other_acl, &other_count)) {
+			DEBUG(10, ("error getting acl from directory\n"));
+			goto done;
+		}
+		DEBUG(10, ("adding %s part of fs acl to given acl\n",
+			   ((other_type == SMB_ACL_TYPE_ACCESS)
+			    ? "access"
+			    : "default")));
+		if (!solaris_add_to_acl(&solaris_acl, &count, other_acl,
+					other_count, other_type))
+		{
+			DEBUG(10, ("error adding other acl.\n"));
+			SAFE_FREE(other_acl);
+			goto done;
+		}
+		SAFE_FREE(other_acl);
+	}
+	else if (type != SMB_ACL_TYPE_ACCESS) {
+		errno = EINVAL;
+		goto done;
+	}
+
+	if (!solaris_acl_sort(solaris_acl, count)) {
+		DEBUG(10, ("resulting acl is not valid!\n"));
+		goto done;
+	}
+
+	ret = acl(smb_fname->base_name, SETACL, count, solaris_acl);
+
+ done:
+	DEBUG(10, ("solarisacl_sys_acl_set_file %s.\n",
+		   ((ret != 0) ? "failed" : "succeeded")));
+	SAFE_FREE(solaris_acl);
+	TALLOC_FREE(smb_fname);
+	return ret;
+}
+
 /*
  * set the access ACL on the file referred to by a fd 
  */
diff --git a/source3/modules/vfs_tru64acl.c b/source3/modules/vfs_tru64acl.c
index 12b50ea042c..24e9a69bf89 100644
--- a/source3/modules/vfs_tru64acl.c
+++ b/source3/modules/vfs_tru64acl.c
@@ -87,6 +87,52 @@ SMB_ACL_T tru64acl_sys_acl_get_fd(vfs_handle_struct *handle,
 	return result;
 }
 
+int tru64acl_sys_acl_set_file(vfs_handle_struct *handle,
+			      const struct smb_filename *smb_fname,
+			      SMB_ACL_TYPE_T type,
+			      SMB_ACL_T theacl)
+{
+        int res;
+        acl_type_t the_acl_type;
+        acl_t tru64_acl;
+
+        DEBUG(10, ("tru64acl_sys_acl_set_file called with name %s, type %d\n",
+			smb_fname->base_name, type));
+
+        switch(type) {
+        case SMB_ACL_TYPE_ACCESS:
+		DEBUGADD(10, ("got acl type ACL_TYPE_ACCESS\n"));
+                the_acl_type = ACL_TYPE_ACCESS;
+                break;
+        case SMB_ACL_TYPE_DEFAULT:
+		DEBUGADD(10, ("got acl type ACL_TYPE_DEFAULT\n"));
+                the_acl_type = ACL_TYPE_DEFAULT;
+                break;
+        default:
+		DEBUGADD(10, ("invalid acl type\n"));
+                errno = EINVAL;
+                goto fail;
+        }
+
+	tru64_acl = smb_acl_to_tru64_acl(theacl);
+        if (tru64_acl == NULL) {
+		DEBUG(10, ("smb_acl_to_tru64_acl failed!\n"));
+                goto fail;
+        }
+	DEBUG(10, ("got tru64 acl...\n"));
+        res = acl_set_file((char *)smb_fname->base_name,
+				the_acl_type, tru64_acl);
+        acl_free(tru64_acl);
+        if (res != 0) {
+                DEBUG(10, ("acl_set_file failed: %s\n", strerror(errno)));
+		goto fail;
+        }
+        return res;
+fail:
+	DEBUG(1, ("tru64acl_sys_acl_set_file failed!\n"));
+	return -1;
+}
+
 int tru64acl_sys_acl_set_fd(vfs_handle_struct *handle,
 			    files_struct *fsp,
 			    SMB_ACL_TYPE_T type,