36 lines
636 B
C
36 lines
636 B
C
#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "syscall.h"
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int posix_openpt(int flags)
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{
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int r = open("/dev/ptmx", flags);
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if (r < 0 && errno == ENOSPC) errno = EAGAIN;
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return r;
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}
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int grantpt(int fd)
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{
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return 0;
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}
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int unlockpt(int fd)
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{
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int unlock = 0;
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return ioctl(fd, TIOCSPTLCK, &unlock);
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}
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int __ptsname_r(int fd, char *buf, size_t len)
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{
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int pty, err;
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if (!buf) len = 0;
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if ((err = __syscall(SYS_ioctl, fd, TIOCGPTN, &pty))) return -err;
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if (snprintf(buf, len, "/dev/pts/%d", pty) >= len) return ERANGE;
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return 0;
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}
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weak_alias(__ptsname_r, ptsname_r);
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