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/cvs/rxvt-unicode/src/ptytty.C
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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.62 by ayin, Mon Sep 11 08:48:37 2006 UTC vs.
Revision 1.68 by ayin, Tue Dec 11 21:49:12 2007 UTC

… …
63 63
64/* ------------------------------------------------------------------------- * 64/* ------------------------------------------------------------------------- *
65 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 65 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
66 * ------------------------------------------------------------------------- */ 66 * ------------------------------------------------------------------------- */
67/* 67/*
68 * Returns pty file descriptor, or -1 on failure 68 * Returns pty file descriptor, or -1 on failure
69 * 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.
70 * 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
71 */ 71 */
72#if defined(UNIX98_PTY) 72#if defined(UNIX98_PTY)
73
73static int 74 static int
74get_pty (int *fd_tty, char **ttydev) 75 get_pty (int *fd_tty, char **ttydev)
75{ 76 {
76 int pfd; 77 int pfd;
77 78
78# if defined(HAVE_GETPT) 79# if defined(HAVE_GETPT)
79 pfd = getpt(); 80 pfd = getpt();
80# elif defined(HAVE_POSIX_OPENPT) 81# elif defined(HAVE_POSIX_OPENPT)
81 pfd = posix_openpt (O_RDWR); 82 pfd = posix_openpt (O_RDWR);
82# else 83# else
83 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); 84 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
84# endif 85# endif
86
85 if (pfd >= 0) 87 if (pfd >= 0)
86 { 88 {
87 if (grantpt (pfd) == 0 /* change slave permissions */ 89 if (grantpt (pfd) == 0 /* change slave permissions */
88 && unlockpt (pfd) == 0) 90 && unlockpt (pfd) == 0)
91 {
89 { /* slave now unlocked */ 92 /* slave now unlocked */
90 *ttydev = strdup (ptsname (pfd)); /* get slave's name */ 93 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
91 return pfd; 94 return pfd;
92 } 95 }
93 96
94 close (pfd); 97 close (pfd);
95 } 98 }
96 99
97 return -1; 100 return -1;
98} 101 }
102
99#elif defined(HAVE_OPENPTY) 103#elif defined(HAVE_OPENPTY)
104
100static int 105 static int
101get_pty (int *fd_tty, char **ttydev) 106 get_pty (int *fd_tty, char **ttydev)
102{ 107 {
103 int pfd; 108 int pfd;
104 int res; 109 int res;
105 char tty_name[32]; 110
106
107 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 111 res = openpty (&pfd, fd_tty, NULL, NULL, NULL);
112
108 if (res != -1) 113 if (res != -1)
109 { 114 {
115 *ttydev = strdup (ttyname (*fd_tty));
116 return pfd;
117 }
118
119 return -1;
120 }
121
122#elif defined(HAVE__GETPTY)
123
124 static int
125 get_pty (int *fd_tty, char **ttydev)
126 {
127 int pfd;
128 char *slave;
129
130 slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
131
132 if (slave != NULL) {
110 *ttydev = strdup (tty_name); 133 *ttydev = strdup (slave);
111 return pfd; 134 return pfd;
112 } 135 }
113 136
114 return -1; 137 return -1;
115} 138 }
116#elif defined(HAVE__GETPTY)
117static int
118get_pty (int *fd_tty, char **ttydev)
119{
120 int pfd;
121 139
122 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
123 if (*ttydev != NULL)
124 return pfd;
125
126 return -1;
127}
128#elif defined(HAVE_DEV_PTC) 140#elif defined(HAVE_DEV_PTC)
141
129static int 142 static int
130get_pty (int *fd_tty, char **ttydev) 143 get_pty (int *fd_tty, char **ttydev)
131{ 144 {
132 int pfd; 145 int pfd;
133 146
134 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 147 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
135 { 148 {
136 *ttydev = strdup (ttyname (pfd)); 149 *ttydev = strdup (ttyname (pfd));
137 return pfd; 150 return pfd;
138 } 151 }
139 152
140 return -1; 153 return -1;
141} 154 }
155
142#elif defined(HAVE_DEV_CLONE) 156#elif defined(HAVE_DEV_CLONE)
157
143static int 158 static int
144get_pty (int *fd_tty, char **ttydev) 159 get_pty (int *fd_tty, char **ttydev)
145{ 160 {
146 int pfd; 161 int pfd;
147 162
148 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 163 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
149 { 164 {
150 *ttydev = strdup (ptsname (pfd)); 165 *ttydev = strdup (ptsname (pfd));
151 return pfd; 166 return pfd;
152 } 167 }
153 168
154 return -1; 169 return -1;
155} 170 }
171
156#else 172#else
173
157/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ 174 /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
158static int 175 static int
159get_pty (int *fd_tty, char **ttydev) 176 get_pty (int *fd_tty, char **ttydev)
160{ 177 {
161 int pfd; 178 int pfd;
162 int i; 179 int i;
163 char pty_name[32]; 180 char pty_name[32];
164 char tty_name[32]; 181 char tty_name[32];
165 const char *majors = "pqrstuvwxyzabcde"; 182 const char *majors = "pqrstuvwxyzabcde";
166 const char *minors = "0123456789abcdef"; 183 const char *minors = "0123456789abcdef";
184
167 for (i = 0; i < 256; i++) 185 for (i = 0; i < 256; i++)
168 { 186 {
169 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); 187 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
170 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); 188 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
189
171 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 190 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
172 { 191 {
173 snprintf(pty_name, 32, "/dev/ptyp%d", i); 192 snprintf(pty_name, 32, "/dev/ptyp%d", i);
174 snprintf(tty_name, 32, "/dev/ttyp%d", i); 193 snprintf(tty_name, 32, "/dev/ttyp%d", i);
175 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 194 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
176 continue; 195 continue;
177 } 196 }
197
178 if (access (tty_name, R_OK | W_OK) == 0) 198 if (access (tty_name, R_OK | W_OK) == 0)
179 { 199 {
180 *ttydev = strdup (tty_name); 200 *ttydev = strdup (tty_name);
181 return pfd; 201 return pfd;
182 } 202 }
183 203
184 close (pfd); 204 close (pfd);
185 } 205 }
186 206
187 return -1; 207 return -1;
188} 208 }
209
189#endif 210#endif
190 211
191/*----------------------------------------------------------------------*/ 212/*----------------------------------------------------------------------*/
192/* 213/*
193 * Returns tty file descriptor, or -1 on failure 214 * Returns tty file descriptor, or -1 on failure
194 */ 215 */
195static int 216static int
196get_tty (char *ttydev) 217get_tty (char *ttydev)
197{ 218{
198 return open (ttydev, O_RDWR | O_NOCTTY, 0); 219 return open (ttydev, O_RDWR | O_NOCTTY, 0);
… …
203 * Make our tty a controlling tty so that /dev/tty points to us 224 * Make our tty a controlling tty so that /dev/tty points to us
204 */ 225 */
205static int 226static int
206control_tty (int fd_tty) 227control_tty (int fd_tty)
207{ 228{
229 int fd;
230
208 setsid (); 231 setsid ();
209 232
210#if defined(HAVE_DEV_PTMX) && defined(I_PUSH) 233#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
211 /* 234 /*
212 * Push STREAMS modules: 235 * Push STREAMS modules:
… …
233 ioctl (fd_tty, I_PUSH, "ldterm"); 256 ioctl (fd_tty, I_PUSH, "ldterm");
234 ioctl (fd_tty, I_PUSH, "ttcompat"); 257 ioctl (fd_tty, I_PUSH, "ttcompat");
235 } 258 }
236#endif 259#endif
237 260
261#ifdef TIOCSCTTY
238 ioctl (fd_tty, TIOCSCTTY, NULL); 262 ioctl (fd_tty, TIOCSCTTY, NULL);
263#else
264 fd = open (ttyname (fd_tty), O_RDWR);
265 if (fd >= 0)
266 close (fd);
267#endif
239 268
240 int fd = open ("/dev/tty", O_WRONLY); 269 fd = open ("/dev/tty", O_WRONLY);
241 if (fd < 0) 270 if (fd < 0)
242 return -1; /* fatal */ 271 return -1; /* fatal */
243 272
244 close (fd); 273 close (fd);
245 274
… …
297 { 326 {
298#ifdef TTY_GID_SUPPORT 327#ifdef TTY_GID_SUPPORT
299 struct group *gr = getgrnam ("tty"); 328 struct group *gr = getgrnam ("tty");
300 329
301 if (gr) 330 if (gr)
331 {
302 { /* change group ownership of tty to "tty" */ 332 /* change group ownership of tty to "tty" */
303 mode = S_IRUSR | S_IWUSR | S_IWGRP; 333 mode = S_IRUSR | S_IWUSR | S_IWGRP;
304 gid = gr->gr_gid; 334 gid = gr->gr_gid;
305 } 335 }
306 else 336 else
307#endif /* TTY_GID_SUPPORT */ 337#endif /* TTY_GID_SUPPORT */
308 { 338 {
309 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 339 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
310 gid = 0; 340 gid = 0;
311 } 341 }
312 } 342 }
… …
329} 359}
330 360
331void 361void
332ptytty_unix::put () 362ptytty_unix::put ()
333{ 363{
364 if (name)
365 {
334 chmod (name, RESTORE_TTY_MODE); 366 chmod (name, RESTORE_TTY_MODE);
335 chown (name, 0, ttyconf.gid); 367 chown (name, 0, ttyconf.gid);
368 }
336 369
337 close_tty (); 370 close_tty ();
338 371
339 if (pty >= 0) 372 if (pty >= 0)
340 close (pty); 373 close (pty);

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