From: Youngjae Cho <y0.cho@samsung.com>
Date: Tue, 4 Mar 2025 08:48:22 +0000 (+0900)
Subject: tools: lshal: Add --reset option to reset cache file
X-Git-Tag: accepted/tizen/unified/20250306.094544^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=945b524b6b91227815287f6848035d653c88c13a;p=platform%2Fhal%2Fapi%2Fcommon.git

tools: lshal: Add --reset option to reset cache file

The lshal option --reset removes single file,
/opt/etc/hal/.hal-backend-compatibility-loaded. By that way, an access
to the /opt/etc/hal/.hal-backend-compatibility will truncate the file.
Any following call for the cache file will update it to the latest data,
and then recreate .hal-backend-compatibility-loaded to seal the updated
data.

Plus, to reset the cache for every rpm installation, the 'lshal --reset'
is added to %post script.

Change-Id: Id0a9a1390af3dcf1708028b4ad731f43f822d449
Signed-off-by: Youngjae Cho <y0.cho@samsung.com>
---

diff --git a/packaging/hal-api-common.spec b/packaging/hal-api-common.spec
index 50b9a10..98c4488 100644
--- a/packaging/hal-api-common.spec
+++ b/packaging/hal-api-common.spec
@@ -111,6 +111,7 @@ rm -rf %{buildroot}
 %post
 /sbin/ldconfig
 ln -sf %{_unitdir}/hal-compatibility-checker.service %{_unitdir}/sysinit.target.wants/
+%{_bindir}/lshal --reset
 
 %postun
 /sbin/ldconfig
diff --git a/tools/lshal/lshal.c b/tools/lshal/lshal.c
index daf408f..175d374 100644
--- a/tools/lshal/lshal.c
+++ b/tools/lshal/lshal.c
@@ -25,6 +25,7 @@
 #include <signal.h>
 #include <unistd.h>
 #include <inttypes.h>
+#include <getopt.h>
 
 #include "hal-common.h"
 #include "hal-common-interface.h"
@@ -44,6 +45,8 @@
 #define LSHAL_FLAG_MANIFEST_VERSION		BIT(7)
 #define LSHAL_FLAG_COMPATIBILITY		BIT(8)
 
+#define DEFAULT_HAL_BACKEND_COMPATIBILITY_LOADED_PATH		"/opt/etc/hal/.hal-backend-compatibility-loaded"
+
 struct _hal_backend_module_data {
 	/**
 	 * Each HAL module defines the different backend_module_data.
@@ -257,11 +260,67 @@ static void lshal(void)
 	lshal_print_hal_backend_info(flags);
 }
 
+static int show_help(void)
+{
+	printf(
+		"lshal - list platform hal and associated backend information\n"
+		"\n"
+		"USAGE\n"
+		"\tlshal [OPTION]...\n"
+		"\n"
+		"OPTION\n"
+		"\t-h, --help\n"
+		"\t\tShow this help.\n"
+		"\n"
+		"\t-r, --reset\n"
+		"\t\tClear hal information cache.\n"
+	  );
+
+	return 0;
+}
+
+static int reset_cache(void)
+{
+	int ret;
+
+	ret = unlink(DEFAULT_HAL_BACKEND_COMPATIBILITY_LOADED_PATH);
+	if (ret < 0) {
+		printf("Failed to reset cache, %m\n");
+		return ret;
+	}
+
+	sync();
+
+	return 0;
+}
+
 int main(int argc, char *argv[])
 {
+	const struct option lshal_long_option[] = {
+		{ "help",	no_argument,	NULL,	'h' },
+		{ "reset",	no_argument,	NULL,	'r' },
+		{ 0, },
+	};
+	int opt;
+
 	/* Register signal handler for freeing resources */
 	signal(SIGINT, lshal_handle_signal);
 
+	for (;;) {
+		opt = getopt_long(argc, argv, "hr", lshal_long_option, NULL);
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'h':
+			return show_help();
+		case 'r':
+			return reset_cache();
+		default:
+			break;
+		}
+	}
+
 	lshal();
 
 	return 0;