tools: use basename(argv[0]) for program name

Use baename(argv[0]) to get the program name (for usage), instead of
using program_invocation_short_name, which only exists on Linux, not
FreeBSD.

Signed-off-by: Niclas Zeising <zeising@daemonic.se>

3 files changed, 18 insertions, 15 deletions

diff --git a/tools/libevdev-tweak-device.c b/tools/libevdev-tweak-device.c
index 38e4021..391c5f9 100644
--- a/tools/libevdev-tweak-device.c
+++ b/tools/libevdev-tweak-device.c
@@ -23,6 +23,7 @@
 #include "config.h"
 
 #include <getopt.h>
+#include <libgen.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
@@ -39,7 +40,7 @@
 #include "libevdev/libevdev.h"
 
 static void
-usage(void)
+usage(const char *progname)
 {
 	printf("%s --abs <axis> [--min min] [--max max] [--res res] [--fuzz fuzz] [--flat flat] /dev/input/eventXYZ\n"
 	       "\tChange the absinfo struct for the named axis\n"
@@ -47,9 +48,9 @@ usage(void)
 	       "\tChange the x/y resolution on the given device\n"
 	       "%s --led <led> --on|--off /dev/input/eventXYZ\n"
 	       "\tEnable or disable the named LED\n",
-	       program_invocation_short_name,
-	       program_invocation_short_name,
-	       program_invocation_short_name);
+	       progname,
+	       progname,
+	       progname);
 }
 
 enum mode {
@@ -415,7 +416,7 @@ main(int argc, char **argv)
 			rc = EXIT_SUCCESS;
 			/* fallthrough */
 		case MODE_NONE:
-			usage();
+			usage(basename(argv[0]));
 			goto out;
 		case MODE_ABS:
 			rc = parse_options_abs(argc, argv, &changes, &axis,
@@ -439,7 +440,7 @@ main(int argc, char **argv)
 
 	if (optind >= argc) {
 		rc = EXIT_FAILURE;
-		usage();
+		usage(basename(argv[0]));
 		goto out;
 	}
 
diff --git a/tools/mouse-dpi-tool.c b/tools/mouse-dpi-tool.c
index 911f61e..55e84f2 100644
--- a/tools/mouse-dpi-tool.c
+++ b/tools/mouse-dpi-tool.c
@@ -25,6 +25,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <libgen.h>
 #include <limits.h>
 #include <poll.h>
 #include <signal.h>
@@ -51,8 +52,8 @@ struct measurements {
 };
 
 static int
-usage(void) {
-	printf("Usage: %s /dev/input/event0\n", program_invocation_short_name);
+usage(const char *progname) {
+	printf("Usage: %s /dev/input/event0\n", progname);
 	printf("\n");
 	printf("This tool reads relative events from the kernel and calculates\n"
 	       "the distance covered and maximum frequency of the incoming events.\n"
@@ -262,11 +263,11 @@ main (int argc, char **argv) {
 	struct measurements measurements = {0};
 
 	if (argc < 2)
-		return usage();
+		return usage(basename(argv[0]));
 
 	path = argv[1];
 	if (path[0] == '-')
-		return usage();
+		return usage(basename(argv[0]));
 
 	fd = open(path, O_RDONLY|O_NONBLOCK);
 	if (fd < 0) {
diff --git a/tools/touchpad-edge-detector.c b/tools/touchpad-edge-detector.c
index 7727cad..2e0c9fe 100644
--- a/tools/touchpad-edge-detector.c
+++ b/tools/touchpad-edge-detector.c
@@ -25,6 +25,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <libgen.h>
 #include <limits.h>
 #include <math.h>
 #include <poll.h>
@@ -43,8 +44,8 @@
 static int signalled = 0;
 
 static int
-usage(void) {
-	printf("Usage: %s 12x34 /dev/input/eventX\n", program_invocation_short_name);
+usage(const char *progname) {
+	printf("Usage: %s 12x34 /dev/input/eventX\n", progname);
 	printf("\n");
 	printf("This tool reads the touchpad events from the kernel and calculates\n "
 	       "the minimum and maximum for the x and y coordinates, respectively.\n"
@@ -236,11 +237,11 @@ int main (int argc, char **argv) {
 	struct size size;
 
 	if (argc < 3)
-		return usage();
+		return usage(basename(argv[0]));
 
 	if (sscanf(argv[1], "%dx%d", &size.w, &size.h) != 2 ||
 	    size.w <= 0 || size.h <= 0)
-		return usage();
+		return usage(basename(argv[0]));
 
 	if (size.w < 30 || size.h < 30) {
 		fprintf(stderr,
@@ -252,7 +253,7 @@ int main (int argc, char **argv) {
 
 	path = argv[2];
 	if (path[0] == '-')
-		return usage();
+		return usage(basename(argv[0]));
 
 	fd = open(path, O_RDONLY|O_NONBLOCK);
 	if (fd < 0) {