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/cvs/rxvt-unicode/src/ptytty.C
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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.61 by root, Wed Jan 25 10:51:26 2006 UTC vs.
Revision 1.67 by ayin, Mon Nov 19 11:26:34 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)
89 { /* slave now unlocked */ 91 { /* slave now unlocked */
90 *ttydev = strdup (ptsname (pfd)); /* get slave's name */ 92 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
91 return pfd; 93 return pfd;
92 } 94 }
93 95
94 close (pfd); 96 close (pfd);
95 } 97 }
96 98
97 return -1; 99 return -1;
98} 100 }
101
99#elif defined(HAVE_OPENPTY) 102#elif defined(HAVE_OPENPTY)
103
100static int 104 static int
101get_pty (int *fd_tty, char **ttydev) 105 get_pty (int *fd_tty, char **ttydev)
102{ 106 {
103 int pfd; 107 int pfd;
104 int res; 108 int res;
105 char tty_name[32]; 109
106
107 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 110 res = openpty (&pfd, fd_tty, NULL, NULL, NULL);
111
108 if (res != -1) 112 if (res != -1)
109 { 113 {
114 *ttydev = strdup (ttyname (*fd_tty));
115 return pfd;
116 }
117
118 return -1;
119 }
120
121#elif defined(HAVE__GETPTY)
122
123 static int
124 get_pty (int *fd_tty, char **ttydev)
125 {
126 int pfd;
127 char *slave;
128
129 slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
130
131 if (slave != NULL) {
110 *ttydev = strdup (tty_name); 132 *ttydev = strdup (slave);
111 return pfd; 133 return pfd;
112 } 134 }
113 135
114 return -1; 136 return -1;
115} 137 }
116#elif defined(HAVE__GETPTY)
117static int
118get_pty (int *fd_tty, char **ttydev)
119{
120 int pfd;
121 138
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) 139#elif defined(HAVE_DEV_PTC)
140
129static int 141 static int
130get_pty (int *fd_tty, char **ttydev) 142 get_pty (int *fd_tty, char **ttydev)
131{ 143 {
132 int pfd; 144 int pfd;
133 145
134 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 146 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
135 { 147 {
136 *ttydev = strdup (ttyname (pfd)); 148 *ttydev = strdup (ttyname (pfd));
137 return pfd; 149 return pfd;
138 } 150 }
139 151
140 return -1; 152 return -1;
141} 153 }
154
142#elif defined(HAVE_DEV_CLONE) 155#elif defined(HAVE_DEV_CLONE)
156
143static int 157 static int
144get_pty (int *fd_tty, char **ttydev) 158 get_pty (int *fd_tty, char **ttydev)
145{ 159 {
146 int pfd; 160 int pfd;
147 161
148 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 162 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
149 { 163 {
150 *ttydev = strdup (ptsname (pfd)); 164 *ttydev = strdup (ptsname (pfd));
151 return pfd; 165 return pfd;
152 } 166 }
153 167
154 return -1; 168 return -1;
155} 169 }
170
156#else 171#else
172
157/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ 173 /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
158static int 174 static int
159get_pty (int *fd_tty, char **ttydev) 175 get_pty (int *fd_tty, char **ttydev)
160{ 176 {
161 int pfd; 177 int pfd;
162 int i; 178 int i;
163 char pty_name[32]; 179 char pty_name[32];
164 char tty_name[32]; 180 char tty_name[32];
165 const char *majors = "pqrstuvwxyzabcde"; 181 const char *majors = "pqrstuvwxyzabcde";
166 const char *minors = "0123456789abcdef"; 182 const char *minors = "0123456789abcdef";
183
167 for (i = 0; i < 256; i++) 184 for (i = 0; i < 256; i++)
168 { 185 {
169 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); 186 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]); 187 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
188
171 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
172 { 190 {
173 snprintf(pty_name, 32, "/dev/ptyp%d", i); 191 snprintf(pty_name, 32, "/dev/ptyp%d", i);
174 snprintf(tty_name, 32, "/dev/ttyp%d", i); 192 snprintf(tty_name, 32, "/dev/ttyp%d", i);
175 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 193 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
176 continue; 194 continue;
177 } 195 }
196
178 if (access (tty_name, R_OK | W_OK) == 0) 197 if (access (tty_name, R_OK | W_OK) == 0)
179 { 198 {
180 *ttydev = strdup (tty_name); 199 *ttydev = strdup (tty_name);
181 return pfd; 200 return pfd;
182 } 201 }
183 202
184 close (pfd); 203 close (pfd);
185 } 204 }
186} 205
206 return -1;
207 }
208
187#endif 209#endif
188 210
189/*----------------------------------------------------------------------*/ 211/*----------------------------------------------------------------------*/
190/* 212/*
191 * Returns tty file descriptor, or -1 on failure 213 * Returns tty file descriptor, or -1 on failure
192 */ 214 */
193static int 215static int
194get_tty (char *ttydev) 216get_tty (char *ttydev)
195{ 217{
196 return open (ttydev, O_RDWR | O_NOCTTY, 0); 218 return open (ttydev, O_RDWR | O_NOCTTY, 0);
… …
201 * Make our tty a controlling tty so that /dev/tty points to us 223 * Make our tty a controlling tty so that /dev/tty points to us
202 */ 224 */
203static int 225static int
204control_tty (int fd_tty) 226control_tty (int fd_tty)
205{ 227{
228 int fd;
229
206 setsid (); 230 setsid ();
207 231
208#if defined(HAVE_DEV_PTMX) && defined(I_PUSH) 232#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
209 /* 233 /*
210 * Push STREAMS modules: 234 * Push STREAMS modules:
… …
231 ioctl (fd_tty, I_PUSH, "ldterm"); 255 ioctl (fd_tty, I_PUSH, "ldterm");
232 ioctl (fd_tty, I_PUSH, "ttcompat"); 256 ioctl (fd_tty, I_PUSH, "ttcompat");
233 } 257 }
234#endif 258#endif
235 259
260#ifdef TIOCSCTTY
236 ioctl (fd_tty, TIOCSCTTY, NULL); 261 ioctl (fd_tty, TIOCSCTTY, NULL);
262#else
263 fd = open (ttyname (fd_tty), O_RDWR);
264 if (fd >= 0)
265 close (fd);
266#endif
237 267
238 int fd = open ("/dev/tty", O_WRONLY); 268 fd = open ("/dev/tty", O_WRONLY);
239 if (fd < 0) 269 if (fd < 0)
240 return -1; /* fatal */ 270 return -1; /* fatal */
241 271
242 close (fd); 272 close (fd);
243 273
… …
300 { /* change group ownership of tty to "tty" */ 330 { /* change group ownership of tty to "tty" */
301 mode = S_IRUSR | S_IWUSR | S_IWGRP; 331 mode = S_IRUSR | S_IWUSR | S_IWGRP;
302 gid = gr->gr_gid; 332 gid = gr->gr_gid;
303 } 333 }
304 else 334 else
305#endif /* TTY_GID_SUPPORT */ 335#endif /* TTY_GID_SUPPORT */
306 { 336 {
307 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 337 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
308 gid = 0; 338 gid = 0;
309 } 339 }
310 } 340 }
… …
327} 357}
328 358
329void 359void
330ptytty_unix::put () 360ptytty_unix::put ()
331{ 361{
362 if (name)
363 {
332 chmod (name, RESTORE_TTY_MODE); 364 chmod (name, RESTORE_TTY_MODE);
333 chown (name, 0, ttyconf.gid); 365 chown (name, 0, ttyconf.gid);
366 }
334 367
335 close_tty (); 368 close_tty ();
336 369
337 if (pty >= 0) 370 if (pty >= 0)
338 close (pty); 371 close (pty);

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