make __ttyname a function static variable

1 files changed, 5 insertions, 7 deletions

diff --git a/src/unistd/ttyname.c b/src/unistd/ttyname.c
index 471d3ad7..dfb560bc 100644
--- a/src/unistd/ttyname.c
+++ b/src/unistd/ttyname.c
@@ -5,27 +5,25 @@
 #include "_unistd.h"
 #include "_syscall.h"
 
-#ifndef PATH_MAX
-#define PATH_MAX _POSIX_PATH_MAX
-#endif
-
 #ifndef readlink
-#define readlink(_path, _buf, _bufsiz) __syscall(__syscall_lookup(readlink), _path, _buf, _bufsiz, 0, 0, 0)
+#define readlink(_path, _buf, _bufsiz) __scall3(readlink, _path, _buf, _bufsiz)
 #endif
 
 char *ttyname(int fildes)
 {
 	char path[PATH_MAX + 1];
+	static char __ttyname[PATH_MAX + 1];
 
 	if (!isatty(fildes)) {
 		return NULL;
 	}
 
 	sprintf(path, "/proc/self/fd/%d", fildes);
-	if (readlink(path, __unistd.ttyname, sizeof(__unistd.ttyname)) == -1) {
+	if (readlink(path, __ttyname, sizeof(__ttyname)) == -1) {
 		return NULL;
 	}
-	return __unistd.ttyname;
+
+	return __ttyname;
 }
 /*
 POSIX(1)