wd

commit bf588e2dd965ba97befc374dba9eeaf89413ec24
parent 38d7efacbdc22e8848d087730fa6d80d960b2d83
Author: Louis Burda <quent.burda@gmail.com>
Date:   Sat, 28 Oct 2023 16:01:13 +0200

Handle ./ paths correctly

Diffstat:
M
wd.c
 | 
19
++++++++++++-------

1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/wd.c b/wd.c
@@ -8,6 +8,7 @@
 #include <stdlib.h>
 
 static void
+__attribute__((noreturn))
 die(const char *fmt, ...)
 {
 	va_list ap;
@@ -26,14 +27,18 @@ die(const char *fmt, ...)
 	exit(1);
 }
 
-static void
-findbin(char *dst, const char *name)
+static char *
+findbin(char *name)
 {
+	static char binpath[PATH_MAX];
 	char *env, *tok;
 	struct dirent *ent;
 	int len;
 	DIR *d;
 
+	if (!strncmp(name, "./", 2))
+		return name;
+
 	env = getenv("PATH");
 	if (!env) die("PATH not set");
 
@@ -48,10 +53,10 @@ findbin(char *dst, const char *name)
 			if (!strcmp(ent->d_name, name)) {
 				closedir(d);
 				free(env);
-				len = snprintf(dst, PATH_MAX,
+				len = snprintf(binpath, PATH_MAX,
 					"%s/%s", tok, ent->d_name);
 				if (len > PATH_MAX) abort();
-				return;
+				return binpath;
 			}
 		}
 		closedir(d);
@@ -65,16 +70,16 @@ findbin(char *dst, const char *name)
 int
 main(int argc, char **argv)
 {
-	char binpath[PATH_MAX];
+	char *binpath;
 
 	if (argc < 3) {
 		fprintf(stderr, "Usage: wd DIR CMD..\n");
 		return 1;
 	}
 
-	if (chdir(argv[1])) die("chdir:");
+	if (chdir(argv[1])) die("chdir %s:", argv[1]);
 
-	findbin(binpath, argv[2]);
+	binpath = findbin(argv[2]);
 
 	execv(binpath, argv + 2);