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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | /* * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) * Licensed under the GPL */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <errno.h> #include <fcntl.h> #include <termios.h> #include <signal.h> #include <sched.h> #include <sys/socket.h> #include "kern_util.h" #include "chan_user.h" #include "helper.h" #include "user_util.h" #include "user.h" #include "os.h" #include "xterm.h" struct xterm_chan { int pid; int helper_pid; char *title; int device; int raw; struct termios tt; unsigned long stack; int direct_rcv; }; void *xterm_init(char *str, int device, struct chan_opts *opts) { struct xterm_chan *data; if((data = malloc(sizeof(*data))) == NULL) return(NULL); *data = ((struct xterm_chan) { .pid = -1, .helper_pid = -1, .device = device, .title = opts->xterm_title, .raw = opts->raw, .stack = opts->tramp_stack, .direct_rcv = !opts->in_kernel } ); return(data); } /* Only changed by xterm_setup, which is a setup */ static char *terminal_emulator = "xterm"; static char *title_switch = "-T"; static char *exec_switch = "-e"; static int __init xterm_setup(char *line, int *add) { *add = 0; terminal_emulator = line; line = strchr(line, ','); if(line == NULL) return(0); *line++ = '\0'; if(*line) title_switch = line; line = strchr(line, ','); if(line == NULL) return(0); *line++ = '\0'; if(*line) exec_switch = line; return(0); } __uml_setup("xterm=", xterm_setup, "xterm=<terminal emulator>,<title switch>,<exec switch>\n" " Specifies an alternate terminal emulator to use for the debugger,\n" " consoles, and serial lines when they are attached to the xterm channel.\n" " The values are the terminal emulator binary, the switch it uses to set\n" " its title, and the switch it uses to execute a subprocess,\n" " respectively. The title switch must have the form '<switch> title',\n" " not '<switch>=title'. Similarly, the exec switch must have the form\n" " '<switch> command arg1 arg2 ...'.\n" " The default values are 'xterm=xterm,-T,-e'. Values for gnome-terminal\n" " are 'xterm=gnome-terminal,-t,-x'.\n\n" ); int xterm_open(int input, int output, int primary, void *d, char **dev_out) { struct xterm_chan *data = d; unsigned long stack; int pid, fd, new, err; char title[256], file[] = "/tmp/xterm-pipeXXXXXX"; char *argv[] = { terminal_emulator, title_switch, title, exec_switch, "/usr/lib/uml/port-helper", "-uml-socket", file, NULL }; if(access(argv[4], X_OK)) argv[4] = "port-helper"; fd = mkstemp(file); if(fd < 0){ printk("xterm_open : mkstemp failed, errno = %d\n", errno); return(-errno); } if(unlink(file)){ printk("xterm_open : unlink failed, errno = %d\n", errno); return(-errno); } close(fd); fd = create_unix_socket(file, sizeof(file)); if(fd < 0){ printk("xterm_open : create_unix_socket failed, errno = %d\n", -fd); return(-fd); } sprintf(title, data->title, data->device); stack = data->stack; pid = run_helper(NULL, NULL, argv, &stack); if(pid < 0){ printk("xterm_open : run_helper failed, errno = %d\n", -pid); return(pid); } if(data->stack == 0) free_stack(stack, 0); if(data->direct_rcv) new = os_rcv_fd(fd, &data->helper_pid); else { if((err = os_set_fd_block(fd, 0)) != 0){ printk("xterm_open : failed to set descriptor " "non-blocking, errno = %d\n", err); return(err); } new = xterm_fd(fd, &data->helper_pid); } if(new < 0){ printk("xterm_open : os_rcv_fd failed, errno = %d\n", -new); goto out; } tcgetattr(new, &data->tt); if(data->raw) raw(new, 0); data->pid = pid; *dev_out = NULL; out: unlink(file); return(new); } void xterm_close(int fd, void *d) { struct xterm_chan *data = d; if(data->pid != -1) os_kill_process(data->pid, 1); data->pid = -1; if(data->helper_pid != -1) os_kill_process(data->helper_pid, 0); data->helper_pid = -1; close(fd); } void xterm_free(void *d) { free(d); } int xterm_console_write(int fd, const char *buf, int n, void *d) { struct xterm_chan *data = d; return(generic_console_write(fd, buf, n, &data->tt)); } struct chan_ops xterm_ops = { .type = "xterm", .init = xterm_init, .open = xterm_open, .close = xterm_close, .read = generic_read, .write = generic_write, .console_write = xterm_console_write, .window_size = generic_window_size, .free = xterm_free, .winch = 1, }; /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically * adjust the settings for this buffer only. This must remain at the end * of the file. * --------------------------------------------------------------------------- * Local variables: * c-file-style: "linux" * End: */ |