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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 1.63 by root, Tue Oct 3 11:21:33 2006 UTC

… …
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 char tty_name[32];
106 110
107 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 111 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
112
108 if (res != -1) 113 if (res != -1)
109 { 114 {
110 *ttydev = strdup (tty_name); 115 *ttydev = strdup (tty_name);
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
129 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
130
131 if (*ttydev != NULL)
111 return pfd; 132 return pfd;
112 }
113 133
114 return -1; 134 return -1;
115} 135 }
116#elif defined(HAVE__GETPTY)
117static int
118get_pty (int *fd_tty, char **ttydev)
119{
120 int pfd;
121 136
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) 137#elif defined(HAVE_DEV_PTC)
138
129static int 139 static int
130get_pty (int *fd_tty, char **ttydev) 140 get_pty (int *fd_tty, char **ttydev)
131{ 141 {
132 int pfd; 142 int pfd;
133 143
134 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 144 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
135 { 145 {
136 *ttydev = strdup (ttyname (pfd)); 146 *ttydev = strdup (ttyname (pfd));
137 return pfd; 147 return pfd;
138 } 148 }
139 149
140 return -1; 150 return -1;
141} 151 }
152
142#elif defined(HAVE_DEV_CLONE) 153#elif defined(HAVE_DEV_CLONE)
154
143static int 155 static int
144get_pty (int *fd_tty, char **ttydev) 156 get_pty (int *fd_tty, char **ttydev)
145{ 157 {
146 int pfd; 158 int pfd;
147 159
148 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 160 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
149 { 161 {
150 *ttydev = strdup (ptsname (pfd)); 162 *ttydev = strdup (ptsname (pfd));
151 return pfd; 163 return pfd;
152 } 164 }
153 165
154 return -1; 166 return -1;
155} 167 }
168
156#else 169#else
170
157/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ 171 /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
158static int 172 static int
159get_pty (int *fd_tty, char **ttydev) 173 get_pty (int *fd_tty, char **ttydev)
160{ 174 {
161 int pfd; 175 int pfd;
162 int i; 176 int i;
163 char pty_name[32]; 177 char pty_name[32];
164 char tty_name[32]; 178 char tty_name[32];
165 const char *majors = "pqrstuvwxyzabcde"; 179 const char *majors = "pqrstuvwxyzabcde";
166 const char *minors = "0123456789abcdef"; 180 const char *minors = "0123456789abcdef";
181
167 for (i = 0; i < 256; i++) 182 for (i = 0; i < 256; i++)
168 { 183 {
169 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); 184 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]); 185 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
186
171 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 187 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
172 { 188 {
173 snprintf(pty_name, 32, "/dev/ptyp%d", i); 189 snprintf(pty_name, 32, "/dev/ptyp%d", i);
174 snprintf(tty_name, 32, "/dev/ttyp%d", i); 190 snprintf(tty_name, 32, "/dev/ttyp%d", i);
175 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 191 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
176 continue; 192 continue;
177 } 193 }
194
178 if (access (tty_name, R_OK | W_OK) == 0) 195 if (access (tty_name, R_OK | W_OK) == 0)
179 { 196 {
180 *ttydev = strdup (tty_name); 197 *ttydev = strdup (tty_name);
181 return pfd; 198 return pfd;
182 } 199 }
183 200
184 close (pfd); 201 close (pfd);
185 } 202 }
186 203
187 return -1; 204 return -1;
188} 205 }
206
189#endif 207#endif
190 208
191/*----------------------------------------------------------------------*/ 209/*----------------------------------------------------------------------*/
192/* 210/*
193 * Returns tty file descriptor, or -1 on failure 211 * Returns tty file descriptor, or -1 on failure
… …
329} 347}
330 348
331void 349void
332ptytty_unix::put () 350ptytty_unix::put ()
333{ 351{
352 if (name)
353 {
334 chmod (name, RESTORE_TTY_MODE); 354 chmod (name, RESTORE_TTY_MODE);
335 chown (name, 0, ttyconf.gid); 355 chown (name, 0, ttyconf.gid);
356 }
336 357
337 close_tty (); 358 close_tty ();
338 359
339 if (pty >= 0) 360 if (pty >= 0)
340 close (pty); 361 close (pty);

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