src/ping/Makefile.am

@@ -27,7 +27,13 @@ $(VERSION_HEADER): FORCE
 	echo "#define PING_GIT_COMMIT \"$$PING_GIT_COMMIT\"" >> $$NEW_HEADER; \
 	echo "#define PING_HAS_GIT_COMMIT $$HAS_GIT" >> $$NEW_HEADER; \
 	echo "" >> $$NEW_HEADER; \
-	echo "extern char* g_prog_name;" >> $$NEW_HEADER; \
+	echo "struct prog_name" >> $$NEW_HEADER; \
+	echo "{" >> $$NEW_HEADER; \
+	echo "	char		*alloc;" >> $$NEW_HEADER; \
+	echo "	const char	*name;" >> $$NEW_HEADER; \
+	echo "};" >> $$NEW_HEADER; \
+	echo "" >> $$NEW_HEADER; \
+	echo "extern struct prog_name g_prog_name;" >> $$NEW_HEADER; \
 	echo "" >> $$NEW_HEADER; \
 	echo "#endif" >> $$NEW_HEADER; \
 	if test ! -f $(VERSION_HEADER) || ! cmp -s $$NEW_HEADER $(VERSION_HEADER); then \

src/ping/cli/handlers/handle_ttl.c

@@ -7,7 +7,7 @@ cli_handle_ttl(const char *arg, void *config_void)
 	struct ping_config	*config = (struct ping_config *)config_void;
 	uint64_t			ttl;
 
-	if (0 != cli_parse_uint64(arg, &ttl) || ttl > 255 || 0 == ttl)
+	if (0 != cli_parse_uint64(arg, &ttl) || ttl > 255)
 		return CLI_ERROR;
 
 	config->ttl = (uint8_t)ttl;

src/ping/cli/messages/error.c

@@ -4,6 +4,8 @@
 #include "ping/cli.h"
 #include "version_gen.h"
 
+#define CMD_NAME g_prog_name.name
+
 /* Forward declarations */
 static inline void print_suggest_help(void);
 /* -------------------- */
@@ -12,7 +14,7 @@ enum cli_code
 error_unknown_opt(const char *current_opt)
 {
 	dprintf(STDERR_FILENO, "%s: unknown option -- '%s'\n",
-			g_prog_name, current_opt);
+			CMD_NAME, current_opt);
 	print_suggest_help();
 	return CLI_ERROR;
 }
@@ -21,7 +23,7 @@ enum cli_code
 error_invalid_arg(const char *current_opt)
 {
 	dprintf(STDERR_FILENO, "%s: option '%s' requires an argument\n",
-			g_prog_name, current_opt);
+			CMD_NAME, current_opt);
 	print_suggest_help();
 	return CLI_ERROR;
 }
@@ -30,7 +32,7 @@ enum cli_code
 error_invalid_opt(const char *current_opt)
 {
 	dprintf(STDERR_FILENO, "%s: invalid option '%s'\n",
-			g_prog_name, current_opt);
+			CMD_NAME, current_opt);
 	print_suggest_help();
 	return CLI_ERROR;
 }
@@ -39,7 +41,7 @@ enum cli_code
 error_duplicate_opt(const char *current_opt)
 {
 	dprintf(STDERR_FILENO, "%s: duplicate option '%s'\n",
-			g_prog_name, current_opt);
+			CMD_NAME, current_opt);
 	print_suggest_help();
 	return CLI_ERROR;
 }
@@ -48,7 +50,7 @@ enum cli_code
 error_missing_dest(void)
 {
 	dprintf(STDERR_FILENO, "%s: usage error: Destination address required\n",
-			g_prog_name);
+			CMD_NAME);
 	print_suggest_help();
 	return CLI_ERROR;
 }
@@ -56,7 +58,7 @@ error_missing_dest(void)
 enum cli_code
 error_invalid_dest(void)
 {
-	dprintf(STDERR_FILENO, "%s: unknown host\n", g_prog_name);
+	dprintf(STDERR_FILENO, "%s: unknown host\n", CMD_NAME);
 	return CLI_ERROR;
 }
 
@@ -64,5 +66,5 @@ static inline void
 print_suggest_help(void)
 {
 	dprintf(STDERR_FILENO, "Try '%s --help' for more information.\n",
-			g_prog_name);
+			CMD_NAME);
 }

src/ping/cli/messages/version.c

@@ -5,7 +5,7 @@
 void
 print_version(void)
 {
-	printf("%s version %s\n", g_prog_name, PING_VERSION);
+	printf("%s version %s\n", g_prog_name.name, PING_VERSION);
 	printf("Copyright (C) 2026 lohhiicccc\n");
 	printf("License GPLv3+:");
 	printf("GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>\n");

src/ping/core/ping.c

@@ -29,7 +29,7 @@ ping_run(const struct ping_config *config)
 	if (NULL == handle)
 	{
 		dprintf(STDERR_FILENO, "%s: requires CAP_NET_RAW or root privileges\n",
-				g_prog_name);
+				g_prog_name.name);
 		return 1;
 	}
 	if (HAS_FLAG(config->flags, FLAG_DONT_FRAGMENT)

src/ping/core/send.c

@@ -22,13 +22,13 @@ do_send(struct ping_state *state, size_t payload_len)
 	state->send_flag = 0;
 	if (0 != ping_send_one(state, payload_len))
 		dprintf(STDERR_FILENO, "%s: %s\n",
-				g_prog_name, icmp_strerror(state->handle));
+				g_prog_name.name, icmp_strerror(state->handle));
 	if (HAS_FLAG(state->config->flags, FLAG_FLOOD))
 		ping_output_flood_dot();
 	if (0 != ping_scheduler_arm(state->config))
 	{
 		dprintf(STDERR_FILENO, "%s: setitimer: %s\n",
-				g_prog_name, strerror(errno));
+				g_prog_name.name, strerror(errno));
 		state->stop_flag = 1;
 	}
 }

src/ping/main.c

@@ -4,7 +4,10 @@
 #include "ping/cli.h"
 #include "version_gen.h"
 
-char		*g_prog_name = NULL;
+/* Forward declarations */
+static int init_prog_name(char *name);
+struct prog_name g_prog_name = {NULL, NULL};
+/* -------------------- */
 
 int
 main(int argc, char **argv)
@@ -12,8 +15,8 @@ main(int argc, char **argv)
 	struct ping_config	config = {0};
 	int					ret = CLI_ERROR;
 
-	g_prog_name = argv[0];
-	cli_set_prog_name(g_prog_name);
+	if (0 != init_prog_name(argv[0]))
+		goto cleanup;
 	ret = cli_parse_arguments(argc, argv, &config);
 	if (ret != CLI_SUCCESS)
 		goto cleanup;
@@ -22,6 +25,18 @@ main(int argc, char **argv)
 
 cleanup:
 	cli_config_free(&config);
+	free(g_prog_name.alloc);
 	return (ret == CLI_ERROR) ? 2 : EXIT_SUCCESS;
 }
 
+static int
+init_prog_name(char *name)
+{
+	char *path_dup = strdup(name);
+	if (NULL == path_dup)
+		return 1;
+
+	g_prog_name.alloc = path_dup;
+	g_prog_name.name = basename(path_dup);
+	return 0;
+}