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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.52 by root, Thu Jan 19 20:30:36 2006 UTC vs.
Revision 1.53 by ayin, Sat Jan 21 18:15:26 2006 UTC

… …
33#include <fcntl.h> 33#include <fcntl.h>
34 34
35#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
36# include <sys/ioctl.h> 36# include <sys/ioctl.h>
37#endif 37#endif
38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 38#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
39# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
40#endif 40#endif
41#ifdef HAVE_ISASTREAM 41#ifdef HAVE_ISASTREAM
42# include <stropts.h> 42# include <stropts.h>
43#endif 43#endif
… …
46#elif defined(HAVE_LIBUTIL_H) 46#elif defined(HAVE_LIBUTIL_H)
47# include <libutil.h> 47# include <libutil.h>
48#elif defined(HAVE_UTIL_H) 48#elif defined(HAVE_UTIL_H)
49# include <util.h> 49# include <util.h>
50#endif 50#endif
51#ifdef TTY_GID_SUPPORT
52#include <grp.h>
53#endif
51 54
52#include <cstdio> 55#include <cstdio>
53#include <grp.h>
54 56
55#include "rxvtutil.h" 57#include "rxvtutil.h"
56#include "fdpass.h" 58#include "fdpass.h"
57#include "ptytty.h" 59#include "ptytty.h"
58 60
… …
64/* 66/*
65 * Returns pty file descriptor, or -1 on failure 67 * Returns pty file descriptor, or -1 on failure
66 * If successful, ttydev is set to the name of the slave device. 68 * If successful, ttydev is set to the name of the slave device.
67 * fd_tty _may_ also be set to an open fd to the slave device 69 * fd_tty _may_ also be set to an open fd to the slave device
68 */ 70 */
69static inline int 71#if defined(UNIX98_PTY)
72static int
70get_pty_streams (int *fd_tty, char **ttydev) 73get_pty (int *fd_tty, char **ttydev)
71{ 74{
72#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
73# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
74 int pfd; 75 int pfd;
75 76
76# if defined(PTYS_ARE_GETPT) 77# if defined(HAVE_GETPT)
77 pfd = getpt(); 78 pfd = getpt();
78# elif defined(PTYS_ARE_POSIX) 79# elif defined(HAVE_POSIX_OPENPT)
79 pfd = posix_openpt (O_RDWR); 80 pfd = posix_openpt (O_RDWR);
80# else 81# else
81 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 82 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
82# endif 83# endif
83 if (pfd >= 0) 84 if (pfd >= 0)
84 { 85 {
85 if (grantpt (pfd) == 0 /* change slave permissions */ 86 if (grantpt (pfd) == 0 /* change slave permissions */
86 && unlockpt (pfd) == 0) 87 && unlockpt (pfd) == 0)
… …
89 return pfd; 90 return pfd;
90 } 91 }
91 92
92 close (pfd); 93 close (pfd);
93 } 94 }
94# endif
95#endif
96 95
97 return -1; 96 return -1;
98} 97}
99 98#elif defined(HAVE_OPENPTY)
100static inline int 99static int
101get_pty_openpty (int *fd_tty, char **ttydev) 100get_pty (int *fd_tty, char **ttydev)
102{ 101{
103#ifdef PTYS_ARE_OPENPTY
104 int pfd; 102 int pfd;
105 int res; 103 int res;
106 char tty_name[32]; 104 char tty_name[32];
107 105
108 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 106 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
109 if (res != -1) 107 if (res != -1)
110 { 108 {
111 *ttydev = strdup (tty_name); 109 *ttydev = strdup (tty_name);
112 return pfd; 110 return pfd;
113 } 111 }
114#endif
115 112
116 return -1; 113 return -1;
117} 114}
118 115#elif defined(HAVE__GETPTY)
119static inline int 116static int
120get_pty__getpty (int *fd_tty, char **ttydev) 117get_pty (int *fd_tty, char **ttydev)
121{ 118{
122#ifdef PTYS_ARE__GETPTY
123 int pfd; 119 int pfd;
124 120
125 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 121 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
126 if (*ttydev != NULL) 122 if (*ttydev != NULL)
127 return pfd; 123 return pfd;
128#endif
129 124
130 return -1; 125 return -1;
131} 126}
132 127#elif defined(HAVE_DEV_PTC)
133static inline int 128static int
134get_pty_ptc (int *fd_tty, char **ttydev) 129get_pty (int *fd_tty, char **ttydev)
135{ 130{
136#ifdef PTYS_ARE_PTC
137 int pfd; 131 int pfd;
138 132
139 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 133 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
140 { 134 {
141 *ttydev = strdup (ttyname (pfd)); 135 *ttydev = strdup (ttyname (pfd));
142 return pfd; 136 return pfd;
143 } 137 }
144#endif
145 138
146 return -1; 139 return -1;
147} 140}
148 141#elif defined(HAVE_DEV_CLONE)
149static inline int 142static int
150get_pty_clone (int *fd_tty, char **ttydev) 143get_pty (int *fd_tty, char **ttydev)
151{ 144{
152#ifdef PTYS_ARE_CLONE
153 int pfd; 145 int pfd;
154 146
155 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 147 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
156 { 148 {
157 *ttydev = strdup (ptsname (pfd)); 149 *ttydev = strdup (ptsname (pfd));
158 return pfd; 150 return pfd;
159 } 151 }
160#endif
161 152
162 return -1; 153 return -1;
163} 154}
164 155#else
165static inline int 156/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
157static int
166get_pty_numeric (int *fd_tty, char **ttydev) 158get_pty (int *fd_tty, char **ttydev)
167{ 159{
168#ifdef PTYS_ARE_NUMERIC
169 int pfd; 160 int pfd;
170 int idx; 161 int i;
171 char *c1, *c2; 162 char pty_name[32];
172 char pty_name[] = "/dev/ptyp???"; 163 char tty_name[32];
173 char tty_name[] = "/dev/ttyp???"; 164 const char *majors = "pqrstuvwxyzabcde";
174 165 const char *minors = "0123456789abcdef";
175 c1 = &(pty_name[sizeof (pty_name) - 4]);
176 c2 = &(tty_name[sizeof (tty_name) - 4]);
177
178 for (idx = 0; idx < 256; idx++) 166 for (i = 0; i < 256; i++)
179 { 167 {
180 sprintf (c1, "%d", idx); 168 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
181 sprintf (c2, "%d", idx); 169 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
182
183 if (access (tty_name, F_OK) < 0)
184 {
185 idx = 256;
186 break;
187 }
188
189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
171 {
172 snprintf(pty_name, 32, "/dev/ptyp%d", i);
173 snprintf(tty_name, 32, "/dev/ttyp%d", i);
174 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
175 continue;
190 { 176 }
191 if (access (tty_name, R_OK | W_OK) == 0) 177 if (access (tty_name, R_OK | W_OK) == 0)
192 { 178 {
193 *ttydev = strdup (tty_name); 179 *ttydev = strdup (tty_name);
194 return pfd; 180 return pfd;
195 } 181 }
196 182
197 close (pfd); 183 close (pfd);
198 }
199 } 184 }
200#endif
201
202 return -1;
203} 185}
204
205static inline int
206get_pty_searched (int *fd_tty, char **ttydev)
207{
208#ifdef PTYS_ARE_SEARCHED
209# ifndef PTYCHAR1
210# define PTYCHAR1 "pqrstuvwxyz"
211# endif 186#endif
212# ifndef PTYCHAR2
213# define PTYCHAR2 "0123456789abcdef"
214# endif
215 int pfd;
216 const char *c1, *c2;
217 char pty_name[] = "/dev/pty??";
218 char tty_name[] = "/dev/tty??";
219
220 for (c1 = PTYCHAR1; *c1; c1++)
221 {
222 pty_name[ (sizeof (pty_name) - 3)] =
223 tty_name[ (sizeof (pty_name) - 3)] = *c1;
224
225 for (c2 = PTYCHAR2; *c2; c2++)
226 {
227 pty_name[ (sizeof (pty_name) - 2)] =
228 tty_name[ (sizeof (pty_name) - 2)] = *c2;
229
230 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
231 {
232 if (access (tty_name, R_OK | W_OK) == 0)
233 {
234 *ttydev = strdup (tty_name);
235 return pfd;
236 }
237
238 close (pfd);
239 }
240 }
241 }
242#endif
243
244 return -1;
245}
246
247static int
248get_pty (int *fd_tty, char **ttydev)
249{
250 int pfd;
251
252 if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1
253 || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1
254 || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1
255 || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1
256 || (pfd = get_pty_clone (fd_tty, ttydev)) != -1
257 || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1
258 || (pfd = get_pty_searched (fd_tty, ttydev)) != -1)
259 return pfd;
260
261 return -1;
262}
263 187
264/*----------------------------------------------------------------------*/ 188/*----------------------------------------------------------------------*/
265/* 189/*
266 * Returns tty file descriptor, or -1 on failure 190 * Returns tty file descriptor, or -1 on failure
267 */ 191 */
… …
278static int 202static int
279control_tty (int fd_tty) 203control_tty (int fd_tty)
280{ 204{
281 setsid (); 205 setsid ();
282 206
283#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 207#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
284 /* 208 /*
285 * Push STREAMS modules: 209 * Push STREAMS modules:
286 * ptem: pseudo-terminal hardware emulation module. 210 * ptem: pseudo-terminal hardware emulation module.
287 * ldterm: standard terminal line discipline. 211 * ldterm: standard terminal line discipline.
288 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 212 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.

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