X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fmisc%2Fpty.c;h=9e201ef3218b41bf8863ebabca04a845ddad70e0;hp=0d25a8368e1e46b769150cc42cd199c4b9790f7f;hb=HEAD;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01

diff --git a/src/misc/pty.c b/src/misc/pty.c
index 0d25a836..9e201ef3 100644
--- a/src/misc/pty.c
+++ b/src/misc/pty.c
@@ -2,6 +2,9 @@
 #include <sys/ioctl.h>
 #include <stdio.h>
 #include <fcntl.h>
+#include <errno.h>
+#include "libc.h"
+#include "syscall.h"
 
 int posix_openpt(int flags)
 {
@@ -19,17 +22,13 @@ int unlockpt(int fd)
 	return ioctl(fd, TIOCSPTLCK, &unlock);
 }
 
-char *ptsname(int fd)
+int __ptsname_r(int fd, char *buf, size_t len)
 {
-	static char buf[9 + sizeof(int)*3 + 1];
-	char *s = buf+sizeof(buf)-1;
-	int pty;
-	if (ioctl (fd, TIOCGPTN, &pty))
-		return NULL;
-	if (pty) for (; pty; pty/=10) *--s = '0' + pty%10;
-	else *--s = '0';
-	s -= 9;
-        s[0] = '/'; s[1] = 'd'; s[2] = 'e'; s[3] = 'v';
-	s[4] = '/'; s[5] = 'p'; s[6] = 't'; s[7] = 's'; s[8] = '/';
-	return s;
+	int pty, err;
+	if (!buf) len = 0;
+	if ((err = __syscall(SYS_ioctl, fd, TIOCGPTN, &pty))) return err;
+	if (snprintf(buf, len, "/dev/pts/%d", pty) >= len) return ERANGE;
+	return 0;
 }
+
+weak_alias(__ptsname_r, ptsname_r);