tools: use program_invocation_short_name provided by libc

Thanks to Dave Reisner for pointing this out.

8 files changed, 17 insertions, 19 deletions

diff --git a/tools/depmod.c b/tools/depmod.c
index 7d36a50..cc9346f 100644
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -114,7 +114,7 @@ static void help(void)
 		"\t                     current kernel symbols.\n"
 		"\t-E, --symvers=FILE   Use Module.symvers file to check\n"
 		"\t                     symbol versions.\n",
-		binname);
+		program_invocation_short_name);
 }
 
 static inline void _show(const char *fmt, ...)
diff --git a/tools/insmod.c b/tools/insmod.c
index f358b93..427495a 100644
--- a/tools/insmod.c
+++ b/tools/insmod.c
@@ -40,7 +40,7 @@ static void help(void)
 		"Options:\n"
 		"\t-V, --version     show version\n"
 		"\t-h, --help        show this help\n",
-		binname);
+		program_invocation_short_name);
 }
 
 static const char *mod_strerror(int err)
diff --git a/tools/kmod.c b/tools/kmod.c
index 7de9511..5a6bc14 100644
--- a/tools/kmod.c
+++ b/tools/kmod.c
@@ -25,9 +25,6 @@
 #include <libkmod.h>
 #include "kmod.h"
 
-/* visible to all tools, compat or otherwise */
-const char *binname;
-
 static const char options_s[] = "+hV";
 static const struct option options[] = {
 	{ "help", no_argument, NULL, 'h' },
@@ -162,9 +159,7 @@ int main(int argc, char *argv[])
 {
 	int err;
 
-	binname = basename(argv[0]);
-
-	if (strcmp(binname, "kmod") == 0)
+	if (strcmp(program_invocation_short_name, "kmod") == 0)
 		err = handle_kmod_commands(argc, argv);
 	else
 		err = handle_kmod_compat_commands(argc, argv);
diff --git a/tools/kmod.h b/tools/kmod.h
index ceff861..59a87e0 100644
--- a/tools/kmod.h
+++ b/tools/kmod.h
@@ -36,7 +36,4 @@ extern const struct kmod_cmd kmod_cmd_compat_depmod;
 
 extern const struct kmod_cmd kmod_cmd_list;
 
-/* kmod.c */
-extern const char *binname;
-
 #include "log.h"
diff --git a/tools/log.c b/tools/log.c
index 745f5b3..a28cebf 100644
--- a/tools/log.c
+++ b/tools/log.c
@@ -17,6 +17,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <syslog.h>
@@ -77,10 +78,12 @@ static void log_kmod(void *data, int priority, const char *file, int line,
 #endif
 	} else {
 #ifdef ENABLE_DEBUG
-		fprintf(stderr, "%s: %s: %s:%d %s() %s", binname, prioname,
-			file, line, fn, str);
+		fprintf(stderr, "%s: %s: %s:%d %s() %s",
+			program_invocation_short_name, prioname, file, line,
+			fn, str);
 #else
-		fprintf(stderr, "%s: %s: %s", binname, prioname, str);
+		fprintf(stderr, "%s: %s: %s", program_invocation_short_name,
+			prioname, str);
 #endif
 	}
 
@@ -92,7 +95,7 @@ void log_open(bool use_syslog)
 	log_use_syslog = use_syslog;
 
 	if (log_use_syslog)
-		openlog(binname, LOG_CONS, LOG_DAEMON);
+		openlog(program_invocation_short_name, LOG_CONS, LOG_DAEMON);
 }
 
 void log_close(void)
@@ -122,7 +125,8 @@ void log_printf(int prio, const char *fmt, ...)
 	if (log_use_syslog)
 		syslog(prio, "%s: %s", prioname, msg);
 	else
-		fprintf(stderr, "%s: %s: %s", binname, prioname, msg);
+		fprintf(stderr, "%s: %s: %s", program_invocation_short_name,
+			prioname, msg);
 	free(msg);
 
 	if (prio <= LOG_CRIT)
diff --git a/tools/modinfo.c b/tools/modinfo.c
index 8cfe381..aec2608 100644
--- a/tools/modinfo.c
+++ b/tools/modinfo.c
@@ -341,7 +341,7 @@ static void help(void)
 		"\t-b, --basedir=DIR           Use DIR as filesystem root for /lib/modules\n"
 		"\t-V, --version               Show version\n"
 		"\t-h, --help                  Show this help\n",
-		binname);
+		program_invocation_short_name);
 }
 
 static bool is_module_filename(const char *name)
diff --git a/tools/modprobe.c b/tools/modprobe.c
index 4b30759..437dea3 100644
--- a/tools/modprobe.c
+++ b/tools/modprobe.c
@@ -137,7 +137,9 @@ static void help(void)
 		"\t-v, --verbose               enables more messages\n"
 		"\t-V, --version               show version\n"
 		"\t-h, --help                  show this help\n",
-		binname, binname, binname, binname, binname, binname);
+		program_invocation_short_name, program_invocation_short_name,
+		program_invocation_short_name, program_invocation_short_name,
+		program_invocation_short_name, program_invocation_short_name);
 }
 
 static inline void _show(const char *fmt, ...)
diff --git a/tools/rmmod.c b/tools/rmmod.c
index 7be4604..0495463 100644
--- a/tools/rmmod.c
+++ b/tools/rmmod.c
@@ -57,7 +57,7 @@ static void help(void)
 		"\t-v, --verbose     enables more messages\n"
 		"\t-V, --version     show version\n"
 		"\t-h, --help        show this help\n",
-		binname);
+		program_invocation_short_name);
 }
 
 static int check_module_inuse(struct kmod_module *mod) {