Correct misbehaviour of patching sys/sys/tty.h.
For some reason, sys/sys/tty.h was only half patched. This went by unnoticed, because the copyright notice on the top already displayed my name, so I thought the file went in properly. Reported by: kmacy
This commit is contained in:
Ed Schouten
parent
18cf135421
commit
00ba6aade4
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=181907
479
sys/sys/tty.h
479
sys/sys/tty.h
@ -26,391 +26,172 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tty.h 8.6 (Berkeley) 1/21/94
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* $FreeBSD$
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*/
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#ifndef _SYS_TTY_H_
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#define _SYS_TTY_H_
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#include <sys/clist.h>
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#include <sys/termios.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/selinfo.h>
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#include <sys/_lock.h>
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#include <sys/_mutex.h>
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#include <sys/termios.h>
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#include <sys/ttycom.h>
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#include <sys/ttyqueue.h>
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struct tty;
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struct pps_state;
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struct cdev;
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struct cdevsw;
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struct thread;
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typedef int t_open_t(struct tty *, struct cdev *);
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typedef void t_close_t(struct tty *);
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typedef void t_oproc_t(struct tty *);
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typedef void t_purge_t(struct tty *);
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typedef void t_stop_t(struct tty *, int);
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typedef int t_param_t(struct tty *, struct termios *);
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typedef int t_modem_t(struct tty *, int, int);
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typedef void t_break_t(struct tty *, int);
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typedef int t_ioctl_t(struct tty *, u_long cmd, void * data,
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int fflag, struct thread *td);
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/* XXX: same as d_ioctl_t in sys/conf.h to avoid #include polution */
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typedef int __d_ioctl_t(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td);
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struct file;
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struct pgrp;
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struct session;
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struct ucred;
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struct ttydevsw;
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/*
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* Per-tty structure.
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* Per-TTY structure, containing buffers, etc.
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*
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* Should be split in two, into device and tty drivers.
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* Glue could be masks of what to echo and circular buffer
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* (low, high, timeout).
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* List of locks
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* (t) locked by t_mtx
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* (l) locked by tty_list_sx
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* (c) const until freeing
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*/
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struct tty {
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struct clist t_rawq; /* Device raw input queue. */
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long t_rawcc; /* Raw input queue statistics. */
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struct clist t_canq; /* Device canonical queue. */
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long t_cancc; /* Canonical queue statistics. */
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struct clist t_outq; /* Device output queue. */
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long t_outcc; /* Output queue statistics. */
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int t_line; /* Interface to device drivers. */
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struct cdev *t_dev; /* Device. */
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struct cdev *t_mdev; /* Device. */
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u_int t_devunit; /* Cdev unit number */
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int t_state; /* Device and driver (TS*) state. */
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int t_flags; /* Tty flags. */
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int t_timeout; /* Timeout for ttywait() */
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struct pgrp *t_pgrp; /* Foreground process group. */
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struct session *t_session; /* Enclosing session. */
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struct sigio *t_sigio; /* Information for async I/O. */
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struct selinfo t_rsel; /* Tty read/oob select. */
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struct selinfo t_wsel; /* Tty write select. */
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struct termios t_termios; /* Termios state. */
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struct termios t_init_in; /* ... init ingoing */
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struct termios t_init_out; /* ... outgoing */
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struct termios t_lock_in; /* ... lock ingoing */
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struct termios t_lock_out; /* ... outgoing */
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struct winsize t_winsize; /* Window size. */
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void *t_sc; /* driver private softc pointer. */
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void *t_lsc; /* linedisc private softc pointer. */
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int t_column; /* Tty output column. */
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int t_rocount, t_rocol; /* Tty. */
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int t_ififosize; /* Total size of upstream fifos. */
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int t_ihiwat; /* High water mark for input. */
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int t_ilowat; /* Low water mark for input. */
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speed_t t_ispeedwat; /* t_ispeed override for watermarks. */
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int t_ohiwat; /* High water mark for output. */
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int t_olowat; /* Low water mark for output. */
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speed_t t_ospeedwat; /* t_ospeed override for watermarks. */
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int t_gen; /* Generation number. */
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TAILQ_ENTRY(tty) t_list; /* Global chain of ttys for pstat(8) */
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int t_actout; /* Outbound device open */
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int t_wopeners; /* #threads waiting for DCD in open */
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struct mtx *t_mtx; /* TTY lock. */
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struct mtx t_mtxobj; /* Per-TTY lock (when not borrowing). */
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TAILQ_ENTRY(tty) t_list; /* (l) TTY list entry. */
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unsigned int t_flags; /* (t) Terminal option flags. */
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#define TF_NOPREFIX 0x0001 /* Don't prepend "tty" to device name. */
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#define TF_INITLOCK 0x0002 /* Create init/lock state devices. */
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#define TF_CALLOUT 0x0004 /* Create "cua" devices. */
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#define TF_OPENED_IN 0x0008 /* "tty" node is in use. */
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#define TF_OPENED_OUT 0x0010 /* "cua" node is in use. */
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#define TF_OPENED (TF_OPENED_IN|TF_OPENED_OUT)
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#define TF_GONE 0x0020 /* Device node is gone. */
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#define TF_OPENCLOSE 0x0040 /* Device is in open()/close(). */
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#define TF_ASYNC 0x0080 /* Asynchronous I/O enabled. */
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#define TF_LITERAL 0x0100 /* Accept the next character literally. */
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#define TF_HIWAT_IN 0x0200 /* We've reached the input watermark. */
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#define TF_HIWAT_OUT 0x0400 /* We've reached the output watermark. */
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#define TF_HIWAT (TF_HIWAT_IN|TF_HIWAT_OUT)
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#define TF_STOPPED 0x0800 /* Output flow control - stopped. */
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#define TF_EXCLUDE 0x1000 /* Exclusive access. */
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#define TF_BYPASS 0x2000 /* Optimized input path. */
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#define TF_ZOMBIE 0x4000 /* Modem disconnect received. */
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unsigned int t_revokecnt; /* (t) revoke() count. */
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struct mtx t_mtx;
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int t_refcnt;
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int t_hotchar; /* linedisc preferred hot char */
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int t_dtr_wait; /* Inter-session DTR holddown [hz] */
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int t_do_timestamp; /* flag instead ? */
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struct timeval t_timestamp; /* char timestamp */
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struct pps_state *t_pps; /* PPS-API stuff */
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/* Buffering mechanisms. */
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struct ttyinq t_inq; /* (t) Input queue. */
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size_t t_inlow; /* (t) Input low watermark. */
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struct ttyoutq t_outq; /* (t) Output queue. */
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size_t t_outlow; /* (t) Output low watermark. */
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/* Driver supplied methods */
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t_oproc_t *t_oproc; /* Start output. */
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t_stop_t *t_stop; /* Stop output. */
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t_param_t *t_param; /* Set parameters. */
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t_modem_t *t_modem; /* Set modem state (optional). */
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t_break_t *t_break; /* Set break state (optional). */
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t_ioctl_t *t_ioctl; /* Set ioctl handling (optional). */
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t_open_t *t_open; /* First open */
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t_purge_t *t_purge; /* Purge threads */
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t_close_t *t_close; /* Last close */
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__d_ioctl_t *t_cioctl; /* Ioctl on control devices */
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/* Sleeping mechanisms. */
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struct cv t_inwait; /* (t) Input wait queue. */
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struct cv t_outwait; /* (t) Output wait queue. */
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struct cv t_bgwait; /* (t) Background wait queue. */
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struct cv t_dcdwait; /* (t) Carrier Detect wait queue. */
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/* Polling mechanisms. */
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struct selinfo t_inpoll; /* (t) Input poll queue. */
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struct selinfo t_outpoll; /* (t) Output poll queue. */
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struct sigio *t_sigio; /* (t) Asynchronous I/O. */
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struct termios t_termios; /* (t) I/O processing flags. */
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struct winsize t_winsize; /* (t) Window size. */
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unsigned int t_column; /* (t) Current cursor position. */
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unsigned int t_writepos; /* (t) Where input was interrupted. */
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/* Init/lock-state devices. */
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struct termios t_termios_init_in; /* tty%s.init. */
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struct termios t_termios_lock_in; /* tty%s.lock. */
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struct termios t_termios_init_out; /* cua%s.init. */
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struct termios t_termios_lock_out; /* cua%s.lock. */
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struct ttydevsw *t_devsw; /* (c) Driver hooks. */
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/* Process signal delivery. */
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struct pgrp *t_pgrp; /* (t) Foreground process group. */
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struct session *t_session; /* (t) Associated session. */
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unsigned int t_sessioncnt; /* (t) Backpointing sessions. */
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void *t_softc; /* (c) Soft config, for drivers. */
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struct cdev *t_dev; /* (c) Primary character device. */
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};
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#define t_cc t_termios.c_cc
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#define t_cflag t_termios.c_cflag
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#define t_iflag t_termios.c_iflag
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#define t_ispeed t_termios.c_ispeed
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#define t_lflag t_termios.c_lflag
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#define t_min t_termios.c_min
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#define t_oflag t_termios.c_oflag
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#define t_ospeed t_termios.c_ospeed
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#define t_time t_termios.c_time
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#define TTIPRI (PSOCK + 1) /* Sleep priority for tty reads. */
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#define TTOPRI (PSOCK + 2) /* Sleep priority for tty writes. */
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/*
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* Userland version of struct tty, for sysctl.
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* Userland version of struct tty, for sysctl kern.ttys
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*/
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struct xtty {
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size_t xt_size; /* Structure size. */
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long xt_rawcc; /* Raw input queue statistics. */
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long xt_cancc; /* Canonical queue statistics. */
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long xt_outcc; /* Output queue statistics. */
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int xt_line; /* Interface to device drivers. */
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dev_t xt_dev; /* Userland (sysctl) instance. */
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int xt_state; /* Device and driver (TS*) state. */
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int xt_flags; /* Tty flags. */
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int xt_timeout; /* Timeout for ttywait(). */
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pid_t xt_pgid; /* Process group ID. */
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pid_t xt_sid; /* Session ID. */
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struct termios xt_termios; /* Termios state. */
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struct winsize xt_winsize; /* Window size. */
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int xt_column; /* Tty output column. */
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int xt_rocount, xt_rocol; /* Tty. */
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int xt_ififosize; /* Total size of upstream fifos. */
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int xt_ihiwat; /* High water mark for input. */
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int xt_ilowat; /* Low water mark for input. */
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speed_t xt_ispeedwat; /* t_ispeed override for watermarks. */
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int xt_ohiwat; /* High water mark for output. */
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int xt_olowat; /* Low water mark for output. */
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speed_t xt_ospeedwat; /* t_ospeed override for watermarks. */
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size_t xt_insize; /* Input queue size. */
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size_t xt_incc; /* Canonicalized characters. */
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size_t xt_inlc; /* Input line charaters. */
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size_t xt_inlow; /* Input low watermark. */
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size_t xt_outsize; /* Output queue size. */
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size_t xt_outcc; /* Output queue usage. */
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size_t xt_outlow; /* Output low watermark. */
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unsigned int xt_column; /* Current column position. */
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pid_t xt_pgid; /* Foreground process group. */
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pid_t xt_sid; /* Session. */
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unsigned int xt_flags; /* Terminal option flags. */
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dev_t xt_dev; /* Userland device. */
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};
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/*
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* User data unfortunately has to be copied through buffers on the way to
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* and from clists. The buffers are on the stack so their sizes must be
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* fairly small.
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*/
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#define IBUFSIZ 384 /* Should be >= max value of MIN. */
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#define OBUFSIZ 100
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#ifndef TTYHOG
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#define TTYHOG 8192
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#endif
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#ifdef _KERNEL
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#define TTMAXHIWAT roundup(2048, CBSIZE)
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#define TTMINHIWAT roundup(100, CBSIZE)
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#define TTMAXLOWAT 256
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#define TTMINLOWAT 32
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#endif
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/* These flags are kept in t_state. */
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#define TS_SO_OLOWAT 0x00001 /* Wake up when output <= low water. */
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#define TS_ASYNC 0x00002 /* Tty in async I/O mode. */
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#define TS_BUSY 0x00004 /* Draining output. */
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#define TS_CARR_ON 0x00008 /* Carrier is present. */
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#define TS_FLUSH 0x00010 /* Outq has been flushed during DMA. */
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#define TS_ISOPEN 0x00020 /* Open has completed. */
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#define TS_TBLOCK 0x00040 /* Further input blocked. */
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#define TS_TIMEOUT 0x00080 /* Wait for output char processing. */
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#define TS_TTSTOP 0x00100 /* Output paused. */
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#ifdef notyet
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#define TS_WOPEN 0x00200 /* Open in progress. */
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#endif
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#define TS_XCLUDE 0x00400 /* Tty requires exclusivity. */
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/* Allocation and deallocation. */
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struct tty *tty_alloc(struct ttydevsw *, void *, struct mtx *);
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void tty_rel_pgrp(struct tty *, struct pgrp *);
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void tty_rel_sess(struct tty *, struct session *);
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void tty_rel_gone(struct tty *);
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/* State for intra-line fancy editing work. */
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#define TS_BKSL 0x00800 /* State for lowercase \ work. */
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#define TS_CNTTB 0x01000 /* Counting tab width, ignore FLUSHO. */
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#define TS_ERASE 0x02000 /* Within a \.../ for PRTRUB. */
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#define TS_LNCH 0x04000 /* Next character is literal. */
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#define TS_TYPEN 0x08000 /* Retyping suspended input (PENDIN). */
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#define TS_LOCAL (TS_BKSL | TS_CNTTB | TS_ERASE | TS_LNCH | TS_TYPEN)
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#define tty_lock(tp) mtx_lock((tp)->t_mtx)
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#define tty_unlock(tp) mtx_unlock((tp)->t_mtx)
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#define tty_lock_assert(tp,ma) mtx_assert((tp)->t_mtx, (ma))
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/* Extras. */
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#define TS_CAN_BYPASS_L_RINT 0x010000 /* Device in "raw" mode. */
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#define TS_CONNECTED 0x020000 /* Connection open. */
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#define TS_SNOOP 0x040000 /* Device is being snooped on. */
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#define TS_SO_OCOMPLETE 0x080000 /* Wake up when output completes. */
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#define TS_ZOMBIE 0x100000 /* Connection lost. */
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/* Device node creation. */
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void tty_makedev(struct tty *, struct ucred *, const char *, ...)
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__printflike(3, 4);
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#define tty_makealias(tp,fmt,...) \
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make_dev_alias((tp)->t_dev, fmt, ## __VA_ARGS__)
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/* Hardware flow-control-invoked bits. */
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#define TS_CAR_OFLOW 0x200000 /* For MDMBUF (XXX handle in driver). */
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#ifdef notyet
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#define TS_CTS_OFLOW 0x400000 /* For CCTS_OFLOW. */
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#define TS_DSR_OFLOW 0x800000 /* For CDSR_OFLOW. */
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#endif
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/* Signalling processes. */
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void tty_signal_sessleader(struct tty *, int);
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void tty_signal_pgrp(struct tty *, int);
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/* Waking up readers/writers. */
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int tty_wait(struct tty *, struct cv *);
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int tty_timedwait(struct tty *, struct cv *, int);
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void tty_wakeup(struct tty *, int);
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#define TS_DTR_WAIT 0x1000000 /* DTR hold-down between sessions */
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#define TS_GONE 0x2000000 /* Hardware detached */
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#define TS_CALLOUT 0x4000000 /* Callout devices */
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/* System messages. */
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int tty_checkoutq(struct tty *);
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int tty_putchar(struct tty *, char);
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/* Character type information. */
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#define ORDINARY 0
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#define CONTROL 1
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#define BACKSPACE 2
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#define NEWLINE 3
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#define TAB 4
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#define VTAB 5
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#define RETURN 6
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int tty_ioctl(struct tty *, u_long, void *, struct thread *);
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int tty_ioctl_compat(struct tty *, u_long, caddr_t, struct thread *);
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void tty_init_console(struct tty *, speed_t);
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void tty_flush(struct tty *, int);
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void tty_hiwat_in_block(struct tty *);
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void tty_hiwat_in_unblock(struct tty *);
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dev_t tty_udev(struct tty *);
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#define tty_opened(tp) ((tp)->t_flags & TF_OPENED)
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#define tty_gone(tp) ((tp)->t_flags & TF_GONE)
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#define tty_softc(tp) ((tp)->t_softc)
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#define tty_devname(tp) devtoname((tp)->t_dev)
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struct speedtab {
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int sp_speed; /* Speed. */
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int sp_code; /* Code. */
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};
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/* Status line printing. */
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void tty_info(struct tty *);
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/* Modem control commands (driver). */
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#define DMSET 0
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#define DMBIS 1
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#define DMBIC 2
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#define DMGET 3
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/* Flags on a character passed to ttyinput. */
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#define TTY_CHARMASK 0x000000ff /* Character mask */
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#define TTY_QUOTE 0x00000100 /* Character quoted */
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#define TTY_ERRORMASK 0xff000000 /* Error mask */
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#define TTY_FE 0x01000000 /* Framing error */
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#define TTY_PE 0x02000000 /* Parity error */
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#define TTY_OE 0x04000000 /* Overrun error */
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#define TTY_BI 0x08000000 /* Break condition */
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/* Is tp controlling terminal for p? */
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#define isctty(p, tp) \
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((p)->p_session == (tp)->t_session && (p)->p_flag & P_CONTROLT)
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/* Is p in background of tp? */
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#define isbackground(p, tp) \
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(isctty((p), (tp)) && (p)->p_pgrp != (tp)->t_pgrp)
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/* Unique sleep addresses. */
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#define TSA_CARR_ON(tp) ((void *)&(tp)->t_rawq)
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#define TSA_HUP_OR_INPUT(tp) ((void *)&(tp)->t_rawq.c_cf)
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||||
#define TSA_OCOMPLETE(tp) ((void *)&(tp)->t_outq.c_cl)
|
||||
#define TSA_OLOWAT(tp) ((void *)&(tp)->t_outq)
|
||||
|
||||
#ifdef _KERNEL
|
||||
#ifdef MALLOC_DECLARE
|
||||
MALLOC_DECLARE(M_TTYS);
|
||||
#endif
|
||||
|
||||
/* Minor number flag bits */
|
||||
#define MINOR_CALLOUT 0x80000000
|
||||
#define MINOR_INIT 0x40000000
|
||||
#define MINOR_LOCK 0x20000000
|
||||
|
||||
#define ISCALLOUT(dev) (minor(dev) & MINOR_CALLOUT)
|
||||
#define ISINIT(dev) (minor(dev) & MINOR_INIT)
|
||||
#define ISLOCK(dev) (minor(dev) & MINOR_LOCK)
|
||||
|
||||
extern long tk_cancc;
|
||||
extern long tk_nin;
|
||||
extern long tk_nout;
|
||||
extern long tk_rawcc;
|
||||
|
||||
void nottystop(struct tty *tp, int rw);
|
||||
void termioschars(struct termios *t);
|
||||
int tputchar(int c, struct tty *tp);
|
||||
int ttcompat(struct tty *tp, u_long com, caddr_t data, int flag);
|
||||
int ttioctl(struct tty *tp, u_long com, void *data, int flag);
|
||||
int ttread(struct tty *tp, struct uio *uio, int flag);
|
||||
void ttrstrt(void *tp);
|
||||
void ttsetwater(struct tty *tp);
|
||||
int ttspeedtab(int speed, struct speedtab *table);
|
||||
int ttstart(struct tty *tp);
|
||||
void ttwakeup(struct tty *tp);
|
||||
int ttwrite(struct tty *tp, struct uio *uio, int flag);
|
||||
void ttwwakeup(struct tty *tp);
|
||||
struct tty *ttyalloc(void);
|
||||
void ttyblock(struct tty *tp);
|
||||
void ttychars(struct tty *tp);
|
||||
int ttycheckoutq(struct tty *tp, int wait);
|
||||
void ttyconsolemode(struct tty *tp, int speed);
|
||||
int tty_close(struct tty *tp);
|
||||
int ttycreate(struct tty *tp, int flags, const char *fmt, ...) __printflike(3, 4);
|
||||
int ttydtrwaitsleep(struct tty *tp);
|
||||
void ttydtrwaitstart(struct tty *tp);
|
||||
void ttyflush(struct tty *tp, int rw);
|
||||
void ttyfree(struct tty *tp);
|
||||
void ttygone(struct tty *tp);
|
||||
void ttyinfo(struct tty *tp);
|
||||
void ttyinitmode(struct tty *tp, int echo, int speed);
|
||||
int ttyinput(int c, struct tty *tp);
|
||||
int ttylclose(struct tty *tp, int flag);
|
||||
void ttyldoptim(struct tty *tp);
|
||||
int ttymodem(struct tty *tp, int flag);
|
||||
int tty_open(struct cdev *device, struct tty *tp);
|
||||
int ttyref(struct tty *tp);
|
||||
int ttyrel(struct tty *tp);
|
||||
int ttysleep(struct tty *tp, void *chan, int pri, char *wmesg, int timo);
|
||||
int ttywait(struct tty *tp);
|
||||
|
||||
static __inline int
|
||||
tt_open(struct tty *t, struct cdev *c)
|
||||
{
|
||||
|
||||
if (t->t_open == NULL)
|
||||
return (0);
|
||||
return (t->t_open(t, c));
|
||||
}
|
||||
|
||||
static __inline void
|
||||
tt_close(struct tty *t)
|
||||
{
|
||||
|
||||
if (t->t_close != NULL)
|
||||
return (t->t_close(t));
|
||||
}
|
||||
|
||||
static __inline void
|
||||
tt_oproc(struct tty *t)
|
||||
{
|
||||
|
||||
if (t->t_oproc != NULL) /* XXX: Kludge for pty. */
|
||||
t->t_oproc(t);
|
||||
}
|
||||
|
||||
static __inline void
|
||||
tt_purge(struct tty *t)
|
||||
{
|
||||
|
||||
if (t->t_purge != NULL)
|
||||
t->t_purge(t);
|
||||
}
|
||||
|
||||
static __inline void
|
||||
tt_stop(struct tty *t, int i)
|
||||
{
|
||||
|
||||
t->t_stop(t, i);
|
||||
}
|
||||
|
||||
static __inline int
|
||||
tt_param(struct tty *t, struct termios *s)
|
||||
{
|
||||
|
||||
if (t->t_param == NULL)
|
||||
return (0);
|
||||
return (t->t_param(t, s));
|
||||
}
|
||||
|
||||
static __inline int
|
||||
tt_modem(struct tty *t, int i, int j)
|
||||
{
|
||||
|
||||
if (t->t_modem == NULL)
|
||||
return (0);
|
||||
return (t->t_modem(t, i, j));
|
||||
}
|
||||
|
||||
static __inline int
|
||||
tt_break(struct tty *t, int i)
|
||||
{
|
||||
|
||||
if (t->t_break == NULL)
|
||||
return (ENOIOCTL);
|
||||
t->t_break(t, i);
|
||||
return (0);
|
||||
}
|
||||
|
||||
static __inline int
|
||||
tt_ioctl(struct tty *t, u_long cmd, void *data,
|
||||
int fflag, struct thread *td)
|
||||
{
|
||||
|
||||
return (t->t_ioctl(t, cmd, data, fflag, td));
|
||||
}
|
||||
|
||||
/*
|
||||
* XXX: temporary
|
||||
*/
|
||||
#include <sys/linedisc.h>
|
||||
/* Pseudo-terminal hooks. */
|
||||
int pts_alloc_external(int, struct thread *, struct file *,
|
||||
struct cdev *, const char *);
|
||||
|
||||
/* Drivers and line disciplines also need to call these. */
|
||||
#include <sys/ttydevsw.h>
|
||||
#include <sys/ttydisc.h>
|
||||
#endif /* _KERNEL */
|
||||
|
||||
#endif /* !_SYS_TTY_H_ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user