Handle file-properties for setting eXecutable flag

This commits introduce the feature "urn:AGL:widget:file-properties".

This feature actually only allows to set execution flag to files
of the widget.

Example:
  <feature name="urn:AGL:widget:file-properties">
    <param name="flite" value="executable" />
    <param name="jtalk" value="executable" />
  </feature>

Bug-AGL: SPEC-384

Change-Id: If13ca3b1015576317fd52cb9540b77d0e2675f67
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

2 files changed, 56 insertions, 0 deletions

diff --git a/docs/2.2-config.xml.md b/docs/2.2-config.xml.md
index f6c88ab..a7f32dc 100644
--- a/docs/2.2-config.xml.md
+++ b/docs/2.2-config.xml.md
@@ -348,6 +348,28 @@ The value is one of the following values:
 - auto:  
   export the api using the default method(s).
 
+### file-properties: feature name="urn:AGL:widget:file-properties"
+
+Use this feature for setting properties to files of the widget.
+At this time, this feature only allows to set executable flag
+for making companion program executable explicitly.
+
+Example:
+
+```xml
+  <feature name="urn:AGL:widget:file-properties">
+    <param name="flite" value="executable" />
+    <param name="jtalk" value="executable" />
+  </feature>
+```
+
+#### file-properties: param name="path"
+
+The name is the relative path of the file whose property
+must be set.
+
+The value must be "executable" to make the file executable.
+
 ## Known content types
 
 The configuration file ***/etc/afm/afm-unit.conf*** defines
diff --git a/src/wgtpkg-install.c b/src/wgtpkg-install.c
index 3f5ab92..79cb7fb 100644
--- a/src/wgtpkg-install.c
+++ b/src/wgtpkg-install.c
@@ -388,6 +388,37 @@ static int install_exec_flag(const struct wgt_desc *desc)
 	return for_all_content(desc, set_exec_flag);
 }
 
+static int install_file_properties(const struct wgt_desc *desc)
+{
+	int rc, rc2;
+	struct wgt_desc_feature *feat;
+	struct wgt_desc_param *param;
+
+	rc = 0;
+	feat = desc->features;
+	while (feat) {
+		if (!strcmp(feat->name, "urn:AGL:widget:file-properties")) {
+			param = feat->params;
+			while (param) {
+				if (!strcmp(param->value, "executable")) {
+					rc2 = fchmodat(workdirfd, param->name, 0755, 0);
+					if (rc2 < 0)
+						ERROR("can't make executable the file %s: %m", param->name);
+				} else {
+					ERROR("unknown file property %s for %s", param->value, param->name);
+					errno = EINVAL;
+					rc2 = -1;
+				}
+				if (rc2 < 0 && !rc)
+					rc = rc2;
+				param = param->next;
+			}
+		}
+		feat = feat->next;
+	}
+	return rc;
+}
+
 static int install_security(const struct wgt_desc *desc)
 {
 	char path[PATH_MAX], *head;
@@ -502,6 +533,9 @@ struct wgt_info *install_widget(const char *wgtfile, const char *root, int force
 	if (install_exec_flag(desc))
 		goto error4;
 
+	if (install_file_properties(desc))
+		goto error4;
+
 	port = get_port();
 	if (port < 0)
 		goto error4;