/* * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) * Licensed under the GPL */ #include <stdlib.h> #include <errno.h> #include "os.h" #include "user.h" #include "kern_util.h" struct grantpt_info { int fd; int res; int err; }; static void grantpt_cb(void *arg) { struct grantpt_info *info = arg; info->res = grantpt(info->fd); info->err = errno; } int get_pty(void) { struct grantpt_info info; int fd; fd = os_open_file("/dev/ptmx", of_rdwr(OPENFLAGS()), 0); if(fd < 0){ printk("get_pty : Couldn't open /dev/ptmx - err = %d\n", -fd); return(fd); } info.fd = fd; initial_thread_cb(grantpt_cb, &info); if(info.res < 0){ printk("get_pty : Couldn't grant pty - errno = %d\n", -info.err); return(-1); } if(unlockpt(fd) < 0){ printk("get_pty : Couldn't unlock pty - errno = %d\n", errno); return(-1); } return(fd); } /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically * adjust the settings for this buffer only. This must remain at the end * of the file. * --------------------------------------------------------------------------- * Local variables: * c-file-style: "linux" * End: */