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#include "apue.h"
#include <errno.h>
#include <fcntl.h>
#if defined(SOLARIS)
#include <stropts.h>
#endif
int
ptym_open(char *pts_name, int pts_namesz)
{
char *ptr;
int fdm, err;
if ((fdm = posix_openpt(O_RDWR)) < 0)
return(-1);
if (grantpt(fdm) < 0) /* grant access to slave */
goto errout;
if (unlockpt(fdm) < 0) /* clear slave's lock flag */
goto errout;
if ((ptr = ptsname(fdm)) == NULL) /* get slave's name */
goto errout;
/*
* Return name of slave. Null terminate to handle
* case where strlen(ptr) > pts_namesz.
*/
strncpy(pts_name, ptr, pts_namesz);
pts_name[pts_namesz - 1] = '\0';
return(fdm); /* return fd of master */
errout:
err = errno;
close(fdm);
errno = err;
return(-1);
}
int
ptys_open(char *pts_name)
{
int fds;
#if defined(SOLARIS)
int err, setup;
#endif
if ((fds = open(pts_name, O_RDWR)) < 0)
return(-1);
#if defined(SOLARIS)
/*
* Check if stream is already set up by autopush facility.
*/
if ((setup = ioctl(fds, I_FIND, "ldterm")) < 0)
goto errout;
if (setup == 0) {
if (ioctl(fds, I_PUSH, "ptem") < 0)
goto errout;
if (ioctl(fds, I_PUSH, "ldterm") < 0)
goto errout;
if (ioctl(fds, I_PUSH, "ttcompat") < 0) {
errout:
err = errno;
close(fds);
errno = err;
return(-1);
}
}
#endif
return(fds);
}
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