1*c9945492SAndroid Build Coastguard Worker #include <stdlib.h>
2*c9945492SAndroid Build Coastguard Worker #include <sys/ioctl.h>
3*c9945492SAndroid Build Coastguard Worker #include <stdio.h>
4*c9945492SAndroid Build Coastguard Worker #include <fcntl.h>
5*c9945492SAndroid Build Coastguard Worker #include <errno.h>
6*c9945492SAndroid Build Coastguard Worker #include "syscall.h"
7*c9945492SAndroid Build Coastguard Worker
posix_openpt(int flags)8*c9945492SAndroid Build Coastguard Worker int posix_openpt(int flags)
9*c9945492SAndroid Build Coastguard Worker {
10*c9945492SAndroid Build Coastguard Worker int r = open("/dev/ptmx", flags);
11*c9945492SAndroid Build Coastguard Worker if (r < 0 && errno == ENOSPC) errno = EAGAIN;
12*c9945492SAndroid Build Coastguard Worker return r;
13*c9945492SAndroid Build Coastguard Worker }
14*c9945492SAndroid Build Coastguard Worker
grantpt(int fd)15*c9945492SAndroid Build Coastguard Worker int grantpt(int fd)
16*c9945492SAndroid Build Coastguard Worker {
17*c9945492SAndroid Build Coastguard Worker return 0;
18*c9945492SAndroid Build Coastguard Worker }
19*c9945492SAndroid Build Coastguard Worker
unlockpt(int fd)20*c9945492SAndroid Build Coastguard Worker int unlockpt(int fd)
21*c9945492SAndroid Build Coastguard Worker {
22*c9945492SAndroid Build Coastguard Worker int unlock = 0;
23*c9945492SAndroid Build Coastguard Worker return ioctl(fd, TIOCSPTLCK, &unlock);
24*c9945492SAndroid Build Coastguard Worker }
25*c9945492SAndroid Build Coastguard Worker
__ptsname_r(int fd,char * buf,size_t len)26*c9945492SAndroid Build Coastguard Worker int __ptsname_r(int fd, char *buf, size_t len)
27*c9945492SAndroid Build Coastguard Worker {
28*c9945492SAndroid Build Coastguard Worker int pty, err;
29*c9945492SAndroid Build Coastguard Worker if (!buf) len = 0;
30*c9945492SAndroid Build Coastguard Worker if ((err = __syscall(SYS_ioctl, fd, TIOCGPTN, &pty))) return -err;
31*c9945492SAndroid Build Coastguard Worker if (snprintf(buf, len, "/dev/pts/%d", pty) >= len) return ERANGE;
32*c9945492SAndroid Build Coastguard Worker return 0;
33*c9945492SAndroid Build Coastguard Worker }
34*c9945492SAndroid Build Coastguard Worker
35*c9945492SAndroid Build Coastguard Worker weak_alias(__ptsname_r, ptsname_r);
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