/* Change the ownership and access permission of the slave pseudo
terminal associated with the master pseudo terminal specified
by FD. */
int
grantpt (int fd)
{
#if !defined __ASSUME_DEVPTS__
struct statfs fsbuf;
# ifdef PATH_MAX
char _buf[PATH_MAX];
# else
char _buf[512];
# endif
char *buf = _buf;
if (pts_name (fd, &buf, sizeof (_buf)))
return -1;
if (statfs (buf, &fsbuf) < 0)
return -1;
/* If the slave pseudo terminal lives on a `devpts' filesystem, the
ownership and access permission are already set. */
if (fsbuf.f_type != DEVPTS_SUPER_MAGIC && fsbuf.f_type != DEVFS_SUPER_MAGIC)
return __unix_grantpt (fd);
#endif
return 0;
}
/* Change the ownership and access permission of the slave pseudo
terminal associated with the master pseudo terminal specified
by FD. */
int grantpt (int fd)
{
struct statfs fsbuf;
char _buf[PATH_MAX];
char *buf = _buf;
if (pts_name (fd, &buf, sizeof (_buf)))
return -1;
if (__libc_statfs (buf, &fsbuf) < 0)
return -1;
/* If the slave pseudo terminal lives on a `devpts' filesystem, the
ownership and access permission are already set. */
if (fsbuf.f_type != DEVPTS_SUPER_MAGIC && fsbuf.f_type != DEVFS_SUPER_MAGIC)
return __unix_grantpt (fd);
return 0;
}
/* Change the ownership and access permission of the slave pseudo
terminal associated with the master pseudo terminal specified
by FD. */
int
grantpt (int fd)
{
struct statfs fsbuf;
#ifdef PATH_MAX
char _buf[PATH_MAX];
#else
char _buf[512];
#endif
char *buf = _buf;
if (__builtin_expect (pts_name (fd, &buf, sizeof (_buf)), 0))
{
int save_errno = errno;
/* Check, if the file descriptor is valid. pts_name returns the
wrong errno number, so we cannot use that. */
if (__libc_fcntl (fd, F_GETFD) == -1 && errno == EBADF)
return -1;
/* If the filedescriptor is no TTY, grantpt has to set errno
to EINVAL. */
if (save_errno == ENOTTY)
__set_errno (EINVAL);
else
__set_errno (save_errno);
return -1;
}
if (__statfs (buf, &fsbuf) < 0)
return -1;
/* If the slave pseudo terminal lives on a `devpts' filesystem, the
ownership and access permission are already set. */
if (fsbuf.f_type == DEVPTS_SUPER_MAGIC || fsbuf.f_type == DEVFS_SUPER_MAGIC)
return 0;
return __unix_grantpt (fd);
}
