Fix uninstall of widgets without icons

Trying to uninstall a widget without an icon would remove the widget
files, but report an error, and the widget would not be removed from
the database until a reboot, preventing installation of a new version.

To fix this, the error handling in uninstall_widget has been reworked
to only explicitly return an error when the unlink of the icon file
fails for reasons other than the file not being present. This then
allows some code cleanup by removing the extra rc2 variable and fixing
some error checks where rc and rc2 were being mixed.

Bug-AGL: SPEC-3401

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ica4a91f41b2bd9e16e16dee4ce660f6fa1f7840b

1 files changed, 14 insertions, 12 deletions

diff --git a/src/wgtpkg-uninstall.c b/src/wgtpkg-uninstall.c
index dba667c..41bc693 100644
--- a/src/wgtpkg-uninstall.c
+++ b/src/wgtpkg-uninstall.c
@@ -1,5 +1,6 @@
 /*
  Copyright (C) 2015-2020 IoT.bzh
+ Copyright (C) 2020 Konsulko Group
 
  author: José Bollo <jose.bollo@iot.bzh>
 
@@ -42,7 +43,7 @@ int uninstall_widget(const char *idaver, const char *root)
 	const char *at;
 #endif
 	char path[PATH_MAX];
-	int rc, rc2;
+	int rc;
 	struct unitconf uconf;
 	struct wgt_info *ifo;
 
@@ -95,14 +96,16 @@ int uninstall_widget(const char *idaver, const char *root)
 	rc = snprintf(path, sizeof path, "%s/%s", FWK_ICON_DIR, idaver);
 	assert(rc < (int)sizeof path);
 	rc = unlink(path);
-	if (rc < 0 && errno != ENOENT)
+	if (rc < 0 && errno != ENOENT) {
 		ERROR("can't remove '%s': %m", path);
+		return -1;
+	}
 
 #if DISTINCT_VERSIONS
 	/* removes the parent directory if empty */
-	rc2 = snprintf(path, sizeof path, "%s/%s", root, id);
-	assert(rc2 < (int)sizeof path);
-	rc2 = rmdir(path);
+	rc = snprintf(path, sizeof path, "%s/%s", root, id);
+	assert(rc < (int)sizeof path);
+	rc = rmdir(path);
 	if (rc < 0 && errno == ENOTEMPTY)
 		return rc;
 	if (rc < 0) {
@@ -114,19 +117,18 @@ int uninstall_widget(const char *idaver, const char *root)
 	 * parent directory removed: last occurrence of the application
 	 * uninstall it for the security-manager
 	 */
-	rc2 = secmgr_init(id);
+	rc = secmgr_init(id);
 #else
-	rc2 = secmgr_init(idaver);
+	rc = secmgr_init(idaver);
 #endif
-	if (rc2) {
+	if (rc) {
 		ERROR("can't init security manager context");
 		return -1;
 	}
-	rc2 = secmgr_uninstall();
-	if (rc2) {
+	rc = secmgr_uninstall();
+	if (rc) {
 		ERROR("can't uninstall security manager context");
 		return -1;
 	}
-	return rc;
+	return 0;
 }
-