projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| da7c5cc6 | 1 | /* |
| 0880b18e | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
| da7c5cc6 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | * | |
| 2100bbbc | 6 | * @(#)tty_tty.c 7.4 (Berkeley) %G% |
| da7c5cc6 | 7 | */ |
| 63c57592 BJ |
8 | |
| 9 | /* | |
| 964bcfb1 | 10 | * Indirect driver for controlling tty. |
| 231ed58b BJ |
11 | * |
| 12 | * THIS IS GARBAGE: MUST SOON BE DONE WITH struct inode * IN PROC TABLE. | |
| 63c57592 | 13 | */ |
| 94368568 JB |
14 | #include "param.h" |
| 15 | #include "systm.h" | |
| 16 | #include "conf.h" | |
| 94368568 JB |
17 | #include "user.h" |
| 18 | #include "ioctl.h" | |
| 19 | #include "tty.h" | |
| 20 | #include "proc.h" | |
| 21 | #include "uio.h" | |
| 63c57592 BJ |
22 | |
| 23 | /*ARGSUSED*/ | |
| 24 | syopen(dev, flag) | |
| 830bbc16 BJ |
25 | dev_t dev; |
| 26 | int flag; | |
| 63c57592 BJ |
27 | { |
| 28 | ||
| 830bbc16 BJ |
29 | if (u.u_ttyp == NULL) |
| 30 | return (ENXIO); | |
| 31 | return ((*cdevsw[major(u.u_ttyd)].d_open)(u.u_ttyd, flag)); | |
| 63c57592 BJ |
32 | } |
| 33 | ||
| 34 | /*ARGSUSED*/ | |
| 76e0e3c3 | 35 | syread(dev, uio, flag) |
| be3a1208 BJ |
36 | dev_t dev; |
| 37 | struct uio *uio; | |
| 63c57592 BJ |
38 | { |
| 39 | ||
| 840510a3 BJ |
40 | if (u.u_ttyp == NULL) |
| 41 | return (ENXIO); | |
| 76e0e3c3 | 42 | return ((*cdevsw[major(u.u_ttyd)].d_read)(u.u_ttyd, uio, flag)); |
| 63c57592 BJ |
43 | } |
| 44 | ||
| 45 | /*ARGSUSED*/ | |
| 76e0e3c3 | 46 | sywrite(dev, uio, flag) |
| be3a1208 BJ |
47 | dev_t dev; |
| 48 | struct uio *uio; | |
| 63c57592 BJ |
49 | { |
| 50 | ||
| 840510a3 BJ |
51 | if (u.u_ttyp == NULL) |
| 52 | return (ENXIO); | |
| 76e0e3c3 | 53 | return ((*cdevsw[major(u.u_ttyd)].d_write)(u.u_ttyd, uio, flag)); |
| 63c57592 BJ |
54 | } |
| 55 | ||
| 56 | /*ARGSUSED*/ | |
| 57 | syioctl(dev, cmd, addr, flag) | |
| 35c1dcdb BJ |
58 | dev_t dev; |
| 59 | int cmd; | |
| 60 | caddr_t addr; | |
| 61 | int flag; | |
| 63c57592 BJ |
62 | { |
| 63 | ||
| 9060c89c | 64 | if (cmd == TIOCNOTTY) { |
| e39f9ea6 MT |
65 | if (SESS_LEADER(u.u_procp)) { |
| 66 | /* | |
| 67 | * XXX - check posix draft | |
| 68 | */ | |
| 69 | u.u_ttyp->t_session = 0; | |
| 70 | u.u_ttyp->t_pgid = 0; | |
| 71 | } | |
| 76e0e3c3 MT |
72 | u.u_ttyp = 0; |
| 73 | u.u_ttyd = 0; | |
| 830bbc16 | 74 | return (0); |
| 4460d508 | 75 | } |
| 830bbc16 BJ |
76 | if (u.u_ttyp == NULL) |
| 77 | return (ENXIO); | |
| 78 | return ((*cdevsw[major(u.u_ttyd)].d_ioctl)(u.u_ttyd, cmd, addr, flag)); | |
| 63c57592 | 79 | } |
| 231ed58b | 80 | |
| a8d3bf7f | 81 | /*ARGSUSED*/ |
| 231ed58b | 82 | syselect(dev, flag) |
| a8d3bf7f BJ |
83 | dev_t dev; |
| 84 | int flag; | |
| 231ed58b BJ |
85 | { |
| 86 | ||
| e8743532 | 87 | if (u.u_ttyp == NULL) { |
| 231ed58b | 88 | u.u_error = ENXIO; |
| 9060c89c | 89 | return (0); |
| 231ed58b | 90 | } |
| 0f8a7bf9 | 91 | return ((*cdevsw[major(u.u_ttyd)].d_select)(u.u_ttyd, flag)); |
| 231ed58b | 92 | } |