diff options
Diffstat (limited to 'libc-top-half/musl/src/misc/pty.c')
-rw-r--r-- | libc-top-half/musl/src/misc/pty.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/misc/pty.c b/libc-top-half/musl/src/misc/pty.c new file mode 100644 index 0000000..a057714 --- /dev/null +++ b/libc-top-half/musl/src/misc/pty.c @@ -0,0 +1,35 @@ +#include <stdlib.h> +#include <sys/ioctl.h> +#include <stdio.h> +#include <fcntl.h> +#include <errno.h> +#include "syscall.h" + +int posix_openpt(int flags) +{ + int r = open("/dev/ptmx", flags); + if (r < 0 && errno == ENOSPC) errno = EAGAIN; + return r; +} + +int grantpt(int fd) +{ + return 0; +} + +int unlockpt(int fd) +{ + int unlock = 0; + return ioctl(fd, TIOCSPTLCK, &unlock); +} + +int __ptsname_r(int fd, char *buf, size_t len) +{ + 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); |