third_party/ulib/musl/src/misc/ptsname.c

#include <errno.h>
#include <stdlib.h>

int __ptsname_r(int, char*, size_t);

char* ptsname(int fd) {
    static char buf[9 + sizeof(int) * 3 + 1];
    int err = __ptsname_r(fd, buf, sizeof buf);
    if (err) {
        errno = err;
        return 0;
    }
    return buf;
}