1/*
2 * The new sysinstall program.
3 *
4 * This is probably the last program in the `sysinstall' line - the next
5 * generation being essentially a complete rewrite.
6 *
7 * $Id: system.c,v 1.54 1996/04/28 01:07:27 jkh Exp $
8 *
9 * Jordan Hubbard
10 *
11 * My contributions are in the public domain.
12 *
13 * Parts of this file are also blatently stolen from Poul-Henning Kamp's
14 * previous version of sysinstall, and as such fall under his "BEERWARE license"
15 * so buy him a beer if you like it! Buy him a beer for me, too!
16 * Heck, get him completely drunk and send me pictures! :-)
17 */
18
19#include "sysinstall.h"
20#include <signal.h>
21#include <sys/reboot.h>
22#include <machine/console.h>
23#include <sys/fcntl.h>
24#include <sys/ioctl.h>
25#include <sys/wait.h>
26
27/*
28 * Handle interrupt signals - this probably won't work in all cases
29 * due to our having bogotified the internal state of dialog or curses,
30 * but we'll give it a try.
31 */
32static void
33handle_intr(int sig)
34{
35 if (!msgYesNo("Are you sure you want to abort the installation?"))
36 systemShutdown();
37}
38
39/* Initialize system defaults */
40void
41systemInitialize(int argc, char **argv)
42{
43 int i;
44
45 signal(SIGINT, SIG_IGN);
46 globalsInit();
47
48 /* Are we running as init? */
49 if (getpid() == 1) {
50 setsid();
51 close(0); open("/dev/ttyv0", O_RDWR);
52 close(1); dup(0);
53 close(2); dup(0);
54 printf("%s running as init\n", argv[0]);
55 RunningAsInit = 1;
56 i = ioctl(0, TIOCSCTTY, (char *)NULL);
57 setlogin("root");
58 setenv("PATH", "/stand:/bin:/sbin:/usr/sbin:/usr/bin:/mnt/bin:/mnt/sbin:/mnt/usr/sbin:/mnt/usr/bin:/usr/X11R6/bin", 1);
59 setbuf(stdin, 0);
60 setbuf(stderr, 0);
61 }
62
63 if (set_termcap() == -1) {
64 printf("Can't find terminal entry\n");
65 exit(-1);
66 }
67
68 /* XXX - libdialog has particularly bad return value checking */
69 init_dialog();
70
71 /* If we haven't crashed I guess dialog is running ! */
72 DialogActive = TRUE;
73
74 /* Make sure HOME is set for those utilities that need it */
75 if (!getenv("HOME"))
76 setenv("HOME", "/", 1);
77 signal(SIGINT, handle_intr);
78}
79
80/* Close down and prepare to exit */
81void
82systemShutdown(void)
83{
84 if (DialogActive) {
85 end_dialog();
86 DialogActive = FALSE;
87 }
88 /* REALLY exit! */
89 if (RunningAsInit) {
90 /* Put the console back */
91 ioctl(0, VT_ACTIVATE, 2);
92 reboot(0);
93 }
94 else
95 exit(1);
96}
97
98/* Run some general command */
99int
100systemExecute(char *command)
101{
102 int status;
103 struct termios foo;
104
105 dialog_update();
106 end_dialog();
107 DialogActive = FALSE;
108 if (tcgetattr(0, &foo) != -1) {
109 foo.c_cc[VERASE] = '\010';
110 tcsetattr(0, TCSANOW, &foo);
111 }
112 status = system(command);
113 DialogActive = TRUE;
114 return status;
115}
116
117/* Display a help file in a filebox */
118int
119systemDisplayHelp(char *file)
120{
121 char *fname = NULL;
122 char buf[FILENAME_MAX];
123 WINDOW *old = savescr();
124 int ret = 0;
125
126 fname = systemHelpFile(file, buf);
127 if (!fname) {
128 snprintf(buf, FILENAME_MAX, "The %s file is not provided on this particular floppy image.", file);
129 use_helpfile(NULL);
130 use_helpline(NULL);
131 dialog_mesgbox("Sorry!", buf, -1, -1);
132 ret = 1;
133 }
134 else {
135 use_helpfile(NULL);
136 use_helpline(NULL);
137 dialog_textbox(file, fname, LINES, COLS);
138 }
139 restorescr(old);
140 return ret;
141}
142
143char *
144systemHelpFile(char *file, char *buf)
145{
146 if (!file)
147 return NULL;
148
149 snprintf(buf, FILENAME_MAX, "/stand/help/%s.hlp", file);
150 if (file_readable(buf))
151 return buf;
152 return NULL;
153}
154
155void
156systemChangeTerminal(char *color, const u_char c_term[],
157 char *mono, const u_char m_term[])
158{
159 extern void init_acs(void);
160
161 if (OnVTY) {
162 if (ColorDisplay) {
163 setenv("TERM", color, 1);
164 setenv("TERMCAP", c_term, 1);
165 reset_shell_mode();
166 setterm(color);
167 init_acs();
168 cbreak(); noecho();
169 }
170 else {
171 setenv("TERM", mono, 1);
172 setenv("TERMCAP", m_term, 1);
173 reset_shell_mode();
174 setterm(mono);
175 init_acs();
176 cbreak(); noecho();
177 }
178 }
179 clear();
180 refresh();
181 dialog_clear();
182}
183
184int
185vsystem(char *fmt, ...)
186{
187 va_list args;
188 int pstat;
189 pid_t pid;
190 int omask;
191 sig_t intsave, quitsave;
192 char *cmd;
193 int i;
194
195 cmd = (char *)alloca(FILENAME_MAX);
196 cmd[0] = '\0';
197 va_start(args, fmt);
198 vsnprintf(cmd, FILENAME_MAX, fmt, args);
199 va_end(args);
200
201 omask = sigblock(sigmask(SIGCHLD));
202 if (isDebug())
203 msgDebug("Executing command `%s'\n", cmd);
204 pid = fork();
205 if (pid == -1) {
206 (void)sigsetmask(omask);
207 i = 127;
208 }
209 else if (!pid) { /* Junior */
210 (void)sigsetmask(omask);
211 if (DebugFD != -1) {
212 if (OnVTY && isDebug() && RunningAsInit)
213 msgInfo("Command output is on VTY2 - type ALT-F2 to see it");
214 dup2(DebugFD, 0);
215 dup2(DebugFD, 1);
216 dup2(DebugFD, 2);
217 }
218 else {
219 close(1); open("/dev/null", O_WRONLY);
220 dup2(1, 2);
221 }
222 if (!RunningAsInit)
223 execl("/bin/sh", "/bin/sh", "-c", cmd, (char *)NULL);
224 else
225 execl("/stand/sh", "/stand/sh", "-c", cmd, (char *)NULL);
226 exit(1);
227 }
228 else {
229 intsave = signal(SIGINT, SIG_IGN);
230 quitsave = signal(SIGQUIT, SIG_IGN);
231 pid = waitpid(pid, &pstat, 0);
232 (void)sigsetmask(omask);
233 (void)signal(SIGINT, intsave);
234 (void)signal(SIGQUIT, quitsave);
235 i = (pid == -1) ? -1 : WEXITSTATUS(pstat);
236 if (isDebug())
237 msgDebug("Command `%s' returns status of %d\n", cmd, i);
238 }
239 return i;
240}
241
242void
243systemCreateHoloshell(void)
244{
245 if (OnVTY && RunningAsInit) {
246 if (!fork()) {
247 int i, fd;
248 struct termios foo;
249 extern int login_tty(int);
250
251 for (i = 0; i < 64; i++)
252 close(i);
253 DebugFD = fd = open("/dev/ttyv3", O_RDWR);
254 ioctl(0, TIOCSCTTY, &fd);
255 dup2(0, 1);
256 dup2(0, 2);
257 if (login_tty(fd) == -1)
258 msgDebug("Doctor: I can't set the controlling terminal.\n");
259 signal(SIGTTOU, SIG_IGN);
260 if (tcgetattr(fd, &foo) != -1) {
261 foo.c_cc[VERASE] = '\010';
262 if (tcsetattr(fd, TCSANOW, &foo) == -1)
263 msgDebug("Doctor: I'm unable to set the erase character.\n");
264 }
265 else
266 msgDebug("Doctor: I'm unable to get the terminal attributes!\n");
267 execlp("sh", "-sh", 0);
268 msgDebug("Was unable to execute sh for Holographic shell!\n");
269 exit(1);
270 }
271 else
272 msgNotify("Starting an emergency holographic shell on VTY4");
273 }
274}
2 * The new sysinstall program.
3 *
4 * This is probably the last program in the `sysinstall' line - the next
5 * generation being essentially a complete rewrite.
6 *
7 * $Id: system.c,v 1.54 1996/04/28 01:07:27 jkh Exp $
8 *
9 * Jordan Hubbard
10 *
11 * My contributions are in the public domain.
12 *
13 * Parts of this file are also blatently stolen from Poul-Henning Kamp's
14 * previous version of sysinstall, and as such fall under his "BEERWARE license"
15 * so buy him a beer if you like it! Buy him a beer for me, too!
16 * Heck, get him completely drunk and send me pictures! :-)
17 */
18
19#include "sysinstall.h"
20#include <signal.h>
21#include <sys/reboot.h>
22#include <machine/console.h>
23#include <sys/fcntl.h>
24#include <sys/ioctl.h>
25#include <sys/wait.h>
26
27/*
28 * Handle interrupt signals - this probably won't work in all cases
29 * due to our having bogotified the internal state of dialog or curses,
30 * but we'll give it a try.
31 */
32static void
33handle_intr(int sig)
34{
35 if (!msgYesNo("Are you sure you want to abort the installation?"))
36 systemShutdown();
37}
38
39/* Initialize system defaults */
40void
41systemInitialize(int argc, char **argv)
42{
43 int i;
44
45 signal(SIGINT, SIG_IGN);
46 globalsInit();
47
48 /* Are we running as init? */
49 if (getpid() == 1) {
50 setsid();
51 close(0); open("/dev/ttyv0", O_RDWR);
52 close(1); dup(0);
53 close(2); dup(0);
54 printf("%s running as init\n", argv[0]);
55 RunningAsInit = 1;
56 i = ioctl(0, TIOCSCTTY, (char *)NULL);
57 setlogin("root");
58 setenv("PATH", "/stand:/bin:/sbin:/usr/sbin:/usr/bin:/mnt/bin:/mnt/sbin:/mnt/usr/sbin:/mnt/usr/bin:/usr/X11R6/bin", 1);
59 setbuf(stdin, 0);
60 setbuf(stderr, 0);
61 }
62
63 if (set_termcap() == -1) {
64 printf("Can't find terminal entry\n");
65 exit(-1);
66 }
67
68 /* XXX - libdialog has particularly bad return value checking */
69 init_dialog();
70
71 /* If we haven't crashed I guess dialog is running ! */
72 DialogActive = TRUE;
73
74 /* Make sure HOME is set for those utilities that need it */
75 if (!getenv("HOME"))
76 setenv("HOME", "/", 1);
77 signal(SIGINT, handle_intr);
78}
79
80/* Close down and prepare to exit */
81void
82systemShutdown(void)
83{
84 if (DialogActive) {
85 end_dialog();
86 DialogActive = FALSE;
87 }
88 /* REALLY exit! */
89 if (RunningAsInit) {
90 /* Put the console back */
91 ioctl(0, VT_ACTIVATE, 2);
92 reboot(0);
93 }
94 else
95 exit(1);
96}
97
98/* Run some general command */
99int
100systemExecute(char *command)
101{
102 int status;
103 struct termios foo;
104
105 dialog_update();
106 end_dialog();
107 DialogActive = FALSE;
108 if (tcgetattr(0, &foo) != -1) {
109 foo.c_cc[VERASE] = '\010';
110 tcsetattr(0, TCSANOW, &foo);
111 }
112 status = system(command);
113 DialogActive = TRUE;
114 return status;
115}
116
117/* Display a help file in a filebox */
118int
119systemDisplayHelp(char *file)
120{
121 char *fname = NULL;
122 char buf[FILENAME_MAX];
123 WINDOW *old = savescr();
124 int ret = 0;
125
126 fname = systemHelpFile(file, buf);
127 if (!fname) {
128 snprintf(buf, FILENAME_MAX, "The %s file is not provided on this particular floppy image.", file);
129 use_helpfile(NULL);
130 use_helpline(NULL);
131 dialog_mesgbox("Sorry!", buf, -1, -1);
132 ret = 1;
133 }
134 else {
135 use_helpfile(NULL);
136 use_helpline(NULL);
137 dialog_textbox(file, fname, LINES, COLS);
138 }
139 restorescr(old);
140 return ret;
141}
142
143char *
144systemHelpFile(char *file, char *buf)
145{
146 if (!file)
147 return NULL;
148
149 snprintf(buf, FILENAME_MAX, "/stand/help/%s.hlp", file);
150 if (file_readable(buf))
151 return buf;
152 return NULL;
153}
154
155void
156systemChangeTerminal(char *color, const u_char c_term[],
157 char *mono, const u_char m_term[])
158{
159 extern void init_acs(void);
160
161 if (OnVTY) {
162 if (ColorDisplay) {
163 setenv("TERM", color, 1);
164 setenv("TERMCAP", c_term, 1);
165 reset_shell_mode();
166 setterm(color);
167 init_acs();
168 cbreak(); noecho();
169 }
170 else {
171 setenv("TERM", mono, 1);
172 setenv("TERMCAP", m_term, 1);
173 reset_shell_mode();
174 setterm(mono);
175 init_acs();
176 cbreak(); noecho();
177 }
178 }
179 clear();
180 refresh();
181 dialog_clear();
182}
183
184int
185vsystem(char *fmt, ...)
186{
187 va_list args;
188 int pstat;
189 pid_t pid;
190 int omask;
191 sig_t intsave, quitsave;
192 char *cmd;
193 int i;
194
195 cmd = (char *)alloca(FILENAME_MAX);
196 cmd[0] = '\0';
197 va_start(args, fmt);
198 vsnprintf(cmd, FILENAME_MAX, fmt, args);
199 va_end(args);
200
201 omask = sigblock(sigmask(SIGCHLD));
202 if (isDebug())
203 msgDebug("Executing command `%s'\n", cmd);
204 pid = fork();
205 if (pid == -1) {
206 (void)sigsetmask(omask);
207 i = 127;
208 }
209 else if (!pid) { /* Junior */
210 (void)sigsetmask(omask);
211 if (DebugFD != -1) {
212 if (OnVTY && isDebug() && RunningAsInit)
213 msgInfo("Command output is on VTY2 - type ALT-F2 to see it");
214 dup2(DebugFD, 0);
215 dup2(DebugFD, 1);
216 dup2(DebugFD, 2);
217 }
218 else {
219 close(1); open("/dev/null", O_WRONLY);
220 dup2(1, 2);
221 }
222 if (!RunningAsInit)
223 execl("/bin/sh", "/bin/sh", "-c", cmd, (char *)NULL);
224 else
225 execl("/stand/sh", "/stand/sh", "-c", cmd, (char *)NULL);
226 exit(1);
227 }
228 else {
229 intsave = signal(SIGINT, SIG_IGN);
230 quitsave = signal(SIGQUIT, SIG_IGN);
231 pid = waitpid(pid, &pstat, 0);
232 (void)sigsetmask(omask);
233 (void)signal(SIGINT, intsave);
234 (void)signal(SIGQUIT, quitsave);
235 i = (pid == -1) ? -1 : WEXITSTATUS(pstat);
236 if (isDebug())
237 msgDebug("Command `%s' returns status of %d\n", cmd, i);
238 }
239 return i;
240}
241
242void
243systemCreateHoloshell(void)
244{
245 if (OnVTY && RunningAsInit) {
246 if (!fork()) {
247 int i, fd;
248 struct termios foo;
249 extern int login_tty(int);
250
251 for (i = 0; i < 64; i++)
252 close(i);
253 DebugFD = fd = open("/dev/ttyv3", O_RDWR);
254 ioctl(0, TIOCSCTTY, &fd);
255 dup2(0, 1);
256 dup2(0, 2);
257 if (login_tty(fd) == -1)
258 msgDebug("Doctor: I can't set the controlling terminal.\n");
259 signal(SIGTTOU, SIG_IGN);
260 if (tcgetattr(fd, &foo) != -1) {
261 foo.c_cc[VERASE] = '\010';
262 if (tcsetattr(fd, TCSANOW, &foo) == -1)
263 msgDebug("Doctor: I'm unable to set the erase character.\n");
264 }
265 else
266 msgDebug("Doctor: I'm unable to get the terminal attributes!\n");
267 execlp("sh", "-sh", 0);
268 msgDebug("Was unable to execute sh for Holographic shell!\n");
269 exit(1);
270 }
271 else
272 msgNotify("Starting an emergency holographic shell on VTY4");
273 }
274}