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1 | // This file is part of libptytty. Do not make local modifications. |
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2 | // http://software.schmorp.de/pkg/libptytty |
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3 | |
1 | /*--------------------------------*-C-*---------------------------------* |
4 | /*----------------------------------------------------------------------* |
2 | * File: ptytty.c |
5 | * File: ptytty.C |
3 | *----------------------------------------------------------------------* |
6 | *----------------------------------------------------------------------* |
4 | * $Id: ptytty.C,v 1.2 2003/11/24 17:31:27 pcg Exp $ |
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5 | * |
7 | * |
6 | * All portions of code are copyright by their respective author/s. |
8 | * All portions of code are copyright by their respective author/s. |
7 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
9 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
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10 | * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
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11 | * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it> |
8 | * |
12 | * |
9 | * This program is free software; you can redistribute it and/or modify |
13 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by |
14 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 2 of the License, or |
15 | * the Free Software Foundation; either version 2 of the License, or |
12 | * (at your option) any later version. |
16 | * (at your option) any later version. |
… | |
… | |
19 | * You should have received a copy of the GNU General Public License |
23 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
24 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 | *---------------------------------------------------------------------*/ |
26 | *---------------------------------------------------------------------*/ |
23 | |
27 | |
24 | #include "../config.h" /* NECESSARY */ |
28 | #include "../config.h" |
25 | |
29 | |
26 | /* |
30 | #include "ptytty.h" |
27 | * Try to be self-contained except for the above autoconfig'd defines |
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28 | */ |
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29 | |
31 | |
30 | #include <stdio.h> |
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31 | #ifdef HAVE_STDLIB_H |
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32 | # include <stdlib.h> |
32 | #include <cstdlib> |
33 | #endif |
33 | #include <cstring> |
34 | #ifdef HAVE_SYS_TYPES_H |
34 | #include <csignal> |
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35 | |
35 | # include <sys/types.h> |
36 | #include <sys/types.h> |
36 | #endif |
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37 | #ifdef HAVE_UNISTD_H |
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38 | # include <unistd.h> |
37 | #include <unistd.h> |
39 | #endif |
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40 | #if defined(HAVE_STRING_H) |
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41 | # include <string.h> |
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42 | #endif |
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43 | #ifdef HAVE_FCNTL_H |
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44 | # include <fcntl.h> |
38 | #include <fcntl.h> |
45 | #endif |
39 | |
46 | #ifdef HAVE_SYS_IOCTL_H |
40 | #ifdef HAVE_SYS_IOCTL_H |
47 | # include <sys/ioctl.h> |
41 | # include <sys/ioctl.h> |
48 | #endif |
42 | #endif |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
43 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
44 | # include <sys/stropts.h> /* for I_PUSH */ |
51 | #endif |
45 | #endif |
52 | |
46 | #ifdef HAVE_ISASTREAM |
53 | |
47 | # include <stropts.h> |
54 | #ifdef DEBUG_TTY |
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55 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
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56 | #else |
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57 | # define D_TTY(x) |
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58 | #endif |
48 | #endif |
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49 | #if defined(HAVE_PTY_H) |
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50 | # include <pty.h> |
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51 | #elif defined(HAVE_LIBUTIL_H) |
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52 | # include <libutil.h> |
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53 | #elif defined(HAVE_UTIL_H) |
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54 | # include <util.h> |
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55 | #endif |
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56 | #ifdef TTY_GID_SUPPORT |
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57 | #include <grp.h> |
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58 | #endif |
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59 | |
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60 | #include <cstdio> |
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61 | |
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62 | ///////////////////////////////////////////////////////////////////////////// |
59 | |
63 | |
60 | /* ------------------------------------------------------------------------- * |
64 | /* ------------------------------------------------------------------------- * |
61 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
65 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * ------------------------------------------------------------------------- */ |
66 | * ------------------------------------------------------------------------- */ |
63 | /* |
67 | /* |
64 | * Returns pty file descriptor, or -1 on failure |
68 | * Returns pty file descriptor, or -1 on failure |
65 | * If successful, ttydev is set to the name of the slave device. |
69 | * If successful, ttydev is set to the name of the slave device. |
66 | * fd_tty _may_ also be set to an open fd to the slave device |
70 | * fd_tty _may_ also be set to an open fd to the slave device |
67 | */ |
71 | */ |
68 | /* EXTPROTO */ |
72 | #if defined(UNIX98_PTY) |
69 | int |
73 | static int |
70 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
74 | get_pty (int *fd_tty, char **ttydev) |
71 | { |
75 | { |
72 | int pfd; |
76 | int pfd; |
73 | |
77 | |
74 | #ifdef PTYS_ARE_OPENPTY |
78 | # if defined(HAVE_GETPT) |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
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76 | |
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77 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) { |
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78 | *ttydev = strdup(tty_name); |
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79 | return pfd; |
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80 | } |
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81 | #endif |
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82 | |
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83 | #ifdef PTYS_ARE__GETPTY |
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84 | *ttydev = _getpty(&pfd, O_RDWR | O_NDELAY | O_NOCTTY, 0622, 0); |
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85 | if (*ttydev != NULL) |
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86 | return pfd; |
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87 | #endif |
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88 | |
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89 | #ifdef PTYS_ARE_GETPTY |
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90 | char *ptydev; |
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91 | |
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92 | while ((ptydev = getpty()) != NULL) |
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93 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) { |
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94 | *ttydev = ptydev; |
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95 | return pfd; |
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96 | } |
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97 | #endif |
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98 | |
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99 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
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100 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
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101 | { |
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102 | # ifdef PTYS_ARE_GETPT |
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103 | pfd = getpt(); |
79 | pfd = getpt(); |
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80 | # elif defined(HAVE_POSIX_OPENPT) |
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81 | pfd = posix_openpt (O_RDWR); |
104 | # else |
82 | # else |
105 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
83 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
106 | # endif |
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107 | if (pfd >= 0) { |
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108 | if (grantpt(pfd) == 0 /* change slave permissions */ |
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109 | && unlockpt(pfd) == 0) { /* slave now unlocked */ |
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110 | *ttydev = ptsname(pfd); /* get slave's name */ |
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111 | return pfd; |
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112 | } |
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113 | close(pfd); |
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114 | } |
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115 | } |
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116 | # endif |
84 | # endif |
117 | #endif |
85 | if (pfd >= 0) |
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86 | { |
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87 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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88 | && unlockpt (pfd) == 0) |
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89 | { /* slave now unlocked */ |
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90 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
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91 | return pfd; |
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92 | } |
118 | |
93 | |
119 | #ifdef PTYS_ARE_PTC |
94 | close (pfd); |
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95 | } |
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96 | |
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97 | return -1; |
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98 | } |
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99 | #elif defined(HAVE_OPENPTY) |
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100 | static int |
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101 | get_pty (int *fd_tty, char **ttydev) |
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102 | { |
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103 | int pfd; |
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104 | int res; |
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105 | char tty_name[32]; |
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106 | |
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107 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
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108 | if (res != -1) |
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109 | { |
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110 | *ttydev = strdup (tty_name); |
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111 | return pfd; |
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112 | } |
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113 | |
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114 | return -1; |
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115 | } |
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116 | #elif defined(HAVE__GETPTY) |
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117 | static int |
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118 | get_pty (int *fd_tty, char **ttydev) |
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119 | { |
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120 | int pfd; |
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121 | |
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122 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
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123 | if (*ttydev != NULL) |
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124 | return pfd; |
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125 | |
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126 | return -1; |
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127 | } |
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128 | #elif defined(HAVE_DEV_PTC) |
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129 | static int |
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130 | get_pty (int *fd_tty, char **ttydev) |
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131 | { |
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132 | int pfd; |
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133 | |
120 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) { |
134 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
121 | *ttydev = ttyname(pfd); |
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122 | return pfd; |
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123 | } |
135 | { |
124 | #endif |
136 | *ttydev = strdup (ttyname (pfd)); |
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137 | return pfd; |
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138 | } |
125 | |
139 | |
126 | #ifdef PTYS_ARE_CLONE |
140 | return -1; |
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141 | } |
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142 | #elif defined(HAVE_DEV_CLONE) |
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143 | static int |
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144 | get_pty (int *fd_tty, char **ttydev) |
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145 | { |
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146 | int pfd; |
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147 | |
127 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) { |
148 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
128 | *ttydev = ptsname(pfd); |
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129 | return pfd; |
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130 | } |
149 | { |
131 | #endif |
150 | *ttydev = strdup (ptsname (pfd)); |
132 | |
151 | return pfd; |
133 | #ifdef PTYS_ARE_NUMERIC |
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134 | { |
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135 | int idx; |
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136 | char *c1, *c2; |
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137 | char pty_name[] = "/dev/ptyp???"; |
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138 | char tty_name[] = "/dev/ttyp???"; |
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139 | |
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140 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
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141 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
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142 | for (idx = 0; idx < 256; idx++) { |
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143 | sprintf(c1, "%d", idx); |
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144 | sprintf(c2, "%d", idx); |
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145 | if (access(tty_name, F_OK) < 0) { |
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146 | idx = 256; |
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147 | break; |
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148 | } |
152 | } |
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153 | |
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154 | return -1; |
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155 | } |
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156 | #else |
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157 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
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158 | static int |
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159 | get_pty (int *fd_tty, char **ttydev) |
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160 | { |
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161 | int pfd; |
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162 | int i; |
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163 | char pty_name[32]; |
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164 | char tty_name[32]; |
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165 | const char *majors = "pqrstuvwxyzabcde"; |
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166 | const char *minors = "0123456789abcdef"; |
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167 | for (i = 0; i < 256; i++) |
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168 | { |
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169 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
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170 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
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171 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
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172 | { |
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173 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
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174 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
149 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
175 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
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176 | continue; |
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177 | } |
150 | if (access(tty_name, R_OK | W_OK) == 0) { |
178 | if (access (tty_name, R_OK | W_OK) == 0) |
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179 | { |
151 | *ttydev = strdup(tty_name); |
180 | *ttydev = strdup (tty_name); |
152 | return pfd; |
181 | return pfd; |
153 | } |
182 | } |
154 | close(pfd); |
183 | |
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184 | close (pfd); |
155 | } |
185 | } |
156 | } |
186 | } |
157 | } |
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158 | #endif |
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159 | #ifdef PTYS_ARE_SEARCHED |
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160 | { |
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161 | const char *c1, *c2; |
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162 | char pty_name[] = "/dev/pty??"; |
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163 | char tty_name[] = "/dev/tty??"; |
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164 | |
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165 | # ifndef PTYCHAR1 |
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166 | # define PTYCHAR1 "pqrstuvwxyz" |
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167 | # endif |
187 | #endif |
168 | # ifndef PTYCHAR2 |
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169 | # define PTYCHAR2 "0123456789abcdef" |
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170 | # endif |
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171 | for (c1 = PTYCHAR1; *c1; c1++) { |
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172 | pty_name[(sizeof(pty_name) - 3)] = |
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173 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
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174 | for (c2 = PTYCHAR2; *c2; c2++) { |
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175 | pty_name[(sizeof(pty_name) - 2)] = |
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176 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
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177 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
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178 | if (access(tty_name, R_OK | W_OK) == 0) { |
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179 | *ttydev = strdup(tty_name); |
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180 | return pfd; |
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181 | } |
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182 | close(pfd); |
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183 | } |
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184 | } |
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185 | } |
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186 | } |
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187 | #endif |
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188 | return -1; |
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189 | } |
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190 | |
188 | |
191 | /*----------------------------------------------------------------------*/ |
189 | /*----------------------------------------------------------------------*/ |
192 | /* |
190 | /* |
193 | * Returns tty file descriptor, or -1 on failure |
191 | * Returns tty file descriptor, or -1 on failure |
194 | */ |
192 | */ |
195 | /* EXTPROTO */ |
193 | static int |
196 | int |
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197 | rxvt_get_tty(const char *ttydev) |
194 | get_tty (char *ttydev) |
198 | { |
195 | { |
199 | return open(ttydev, O_RDWR | O_NOCTTY, 0); |
196 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
200 | } |
197 | } |
201 | |
198 | |
202 | /*----------------------------------------------------------------------*/ |
199 | /*----------------------------------------------------------------------*/ |
203 | /* |
200 | /* |
204 | * Make our tty a controlling tty so that /dev/tty points to us |
201 | * Make our tty a controlling tty so that /dev/tty points to us |
205 | */ |
202 | */ |
206 | /* EXTPROTO */ |
203 | static int |
207 | int |
204 | control_tty (int fd_tty) |
208 | rxvt_control_tty(int fd_tty, const char *ttydev) |
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209 | { |
205 | { |
210 | #ifndef __QNX__ |
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211 | int fd; |
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212 | |
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213 | D_TTY((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
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214 | /* ---------------------------------------- */ |
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215 | # ifdef HAVE_SETSID |
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216 | setsid(); |
206 | setsid (); |
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207 | |
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208 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
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209 | /* |
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210 | * Push STREAMS modules: |
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211 | * ptem: pseudo-terminal hardware emulation module. |
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212 | * ldterm: standard terminal line discipline. |
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213 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
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214 | * |
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215 | * After we push the STREAMS modules, the first open () on the slave side |
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216 | * (i.e. the next section between the dashes giving us "tty opened OK") |
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217 | * should make the "ptem" (or "ldterm" depending upon either which OS |
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218 | * version or which set of manual pages you have) module give us a |
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219 | * controlling terminal. We must already have close ()d the master side |
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220 | * fd in this child process before we push STREAMS modules on because the |
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221 | * documentation is really unclear about whether it is any close () on |
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222 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
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223 | * close () - on the master side which causes a hang up to be sent |
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224 | * through - Geoff Wing |
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225 | */ |
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226 | # ifdef HAVE_ISASTREAM |
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227 | if (isastream (fd_tty) == 1) |
217 | # endif |
228 | # endif |
218 | # if defined(HAVE_SETPGID) |
229 | { |
219 | setpgid(0, 0); |
230 | ioctl (fd_tty, I_PUSH, "ptem"); |
220 | # elif defined(HAVE_SETPGRP) |
231 | ioctl (fd_tty, I_PUSH, "ldterm"); |
221 | setpgrp(0, 0); |
232 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
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233 | } |
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234 | #endif |
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235 | |
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236 | ioctl (fd_tty, TIOCSCTTY, NULL); |
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237 | |
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238 | int fd = open ("/dev/tty", O_WRONLY); |
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239 | if (fd < 0) |
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240 | return -1; /* fatal */ |
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241 | |
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242 | close (fd); |
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243 | |
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244 | return 0; |
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245 | } |
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246 | |
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247 | void |
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248 | ptytty::close_tty () |
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249 | { |
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250 | if (tty < 0) |
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251 | return; |
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252 | |
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253 | close (tty); |
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254 | tty = -1; |
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255 | } |
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256 | |
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257 | bool |
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258 | ptytty::make_controlling_tty () |
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259 | { |
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260 | return control_tty (tty) >= 0; |
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261 | } |
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262 | |
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263 | void |
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264 | ptytty::set_utf8_mode (bool on) |
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265 | { |
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266 | #ifdef IUTF8 |
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267 | if (pty < 0) |
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268 | return; |
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269 | |
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270 | struct termios tio; |
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271 | |
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272 | if (tcgetattr (pty, &tio) != -1) |
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273 | { |
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274 | tcflag_t new_cflag = tio.c_iflag; |
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275 | |
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276 | if (on) |
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277 | new_cflag |= IUTF8; |
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278 | else |
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279 | new_cflag &= ~IUTF8; |
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280 | |
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281 | if (new_cflag != tio.c_iflag) |
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282 | { |
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283 | tio.c_iflag = new_cflag; |
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284 | tcsetattr (pty, TCSANOW, &tio); |
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285 | } |
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286 | } |
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287 | #endif |
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288 | } |
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289 | |
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290 | static struct ttyconf { |
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291 | gid_t gid; |
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292 | mode_t mode; |
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293 | |
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294 | ttyconf () |
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295 | { |
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296 | #ifdef TTY_GID_SUPPORT |
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297 | struct group *gr = getgrnam ("tty"); |
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298 | |
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299 | if (gr) |
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300 | { /* change group ownership of tty to "tty" */ |
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301 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
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302 | gid = gr->gr_gid; |
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303 | } |
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304 | else |
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305 | #endif /* TTY_GID_SUPPORT */ |
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306 | { |
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307 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
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308 | gid = 0; |
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309 | } |
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310 | } |
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311 | } ttyconf; |
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312 | |
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313 | ptytty_unix::ptytty_unix () |
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314 | { |
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315 | name = 0; |
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316 | #if UTMP_SUPPORT |
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317 | cmd_pid = 0; |
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318 | #endif |
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319 | } |
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320 | |
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321 | ptytty_unix::~ptytty_unix () |
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322 | { |
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323 | #if UTMP_SUPPORT |
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324 | logout (); |
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325 | #endif |
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326 | put (); |
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327 | } |
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328 | |
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329 | void |
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330 | ptytty_unix::put () |
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331 | { |
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332 | chmod (name, RESTORE_TTY_MODE); |
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333 | chown (name, 0, ttyconf.gid); |
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334 | |
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335 | close_tty (); |
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336 | |
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337 | if (pty >= 0) |
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338 | close (pty); |
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339 | |
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340 | free (name); |
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341 | |
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342 | pty = tty = -1; |
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343 | name = 0; |
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344 | } |
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345 | |
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346 | bool |
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347 | ptytty_unix::get () |
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348 | { |
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349 | /* get master (pty) */ |
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350 | if ((pty = get_pty (&tty, &name)) < 0) |
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351 | return false; |
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352 | |
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353 | fcntl (pty, F_SETFL, O_NONBLOCK); |
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354 | |
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355 | /* get slave (tty) */ |
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356 | if (tty < 0) |
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357 | { |
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358 | #ifndef NO_SETOWNER_TTYDEV |
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359 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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360 | chmod (name, ttyconf.mode); |
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361 | # ifdef HAVE_REVOKE |
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362 | revoke (name); |
222 | # endif |
363 | # endif |
223 | /* ---------------------------------------- */ |
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224 | # ifdef TIOCNOTTY |
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225 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
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226 | D_TTY((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
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227 | if (fd >= 0) { |
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228 | ioctl(fd, TIOCNOTTY, NULL); /* void tty associations */ |
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229 | close(fd); |
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230 | } |
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231 | # endif |
364 | #endif |
232 | /* ---------------------------------------- */ |
365 | |
233 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
366 | if ((tty = get_tty (name)) < 0) |
234 | D_TTY((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
367 | { |
235 | if (fd >= 0) |
368 | put (); |
236 | close(fd); /* ouch: still have controlling tty */ |
369 | return false; |
237 | /* ---------------------------------------- */ |
370 | } |
238 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
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239 | /* |
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240 | * Push STREAMS modules: |
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241 | * ptem: pseudo-terminal hardware emulation module. |
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242 | * ldterm: standard terminal line discipline. |
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243 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
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244 | * |
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245 | * After we push the STREAMS modules, the first open() on the slave side |
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246 | * (i.e. the next section between the dashes giving us "tty opened OK") |
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247 | * should make the "ptem" (or "ldterm" depending upon either which OS |
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248 | * version or which set of manual pages you have) module give us a |
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249 | * controlling terminal. We must already have close()d the master side |
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250 | * fd in this child process before we push STREAMS modules on because the |
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251 | * documentation is really unclear about whether it is any close() on |
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252 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
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253 | * close() - on the master side which causes a hang up to be sent |
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254 | * through - Geoff Wing |
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255 | */ |
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256 | # ifdef HAVE_ISASTREAM |
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257 | if (isastream(fd_tty) == 1) |
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258 | # endif |
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259 | { |
371 | } |
260 | D_TTY((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
372 | |
261 | ioctl(fd_tty, I_PUSH, "ptem"); |
373 | return true; |
262 | ioctl(fd_tty, I_PUSH, "ldterm"); |
|
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263 | ioctl(fd_tty, I_PUSH, "ttcompat"); |
|
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264 | } |
|
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265 | #endif |
|
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266 | /* ---------------------------------------- */ |
|
|
267 | # if defined(TIOCSCTTY) |
|
|
268 | fd = ioctl(fd_tty, TIOCSCTTY, NULL); |
|
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269 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
|
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270 | # elif defined(TIOCSETCTTY) |
|
|
271 | fd = ioctl(fd_tty, TIOCSETCTTY, NULL); |
|
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272 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
|
|
273 | # else |
|
|
274 | fd = open(ttydev, O_RDWR); |
|
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275 | D_TTY((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
|
|
276 | if (fd >= 0) |
|
|
277 | close(fd); |
|
|
278 | # endif |
|
|
279 | /* ---------------------------------------- */ |
|
|
280 | fd = open("/dev/tty", O_WRONLY); |
|
|
281 | D_TTY((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
|
|
282 | if (fd < 0) |
|
|
283 | return -1; /* fatal */ |
|
|
284 | close(fd); |
|
|
285 | /* ---------------------------------------- */ |
|
|
286 | D_TTY((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
|
|
287 | /* ---------------------------------------- */ |
|
|
288 | #endif /* ! __QNX__ */ |
|
|
289 | return 0; |
|
|
290 | } |
374 | } |
291 | /*----------------------- end-of-file (C source) -----------------------*/ |
375 | |