path: root/sbin/sysinstall/utils.c

/*
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <phk@login.dkuug.dk> wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
 * ----------------------------------------------------------------------------
 *
 * $Id: utils.c,v 1.35 1995/01/14 10:31:29 jkh Exp $
 *
 */

#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>
#include <string.h>
#include <dialog.h>
#include <errno.h>

#include <sys/file.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/reboot.h>
#include <sys/dkbad.h>
#include <sys/disklabel.h>

#include "sysinstall.h"

void
strip_trailing_newlines(char *p)
{
	int len = strlen(p);
	while (len > 0 && p[len-1] == '\n')
		p[--len] = '\0';
}

void
Debug(char *fmt, ...)
{
	char *p;
	va_list ap;
	p = Malloc(2048);
	va_start(ap,fmt);
	vsnprintf(p, 2048, fmt, ap);
	va_end(ap);
	write(debug_fd,"Debug <",7);
	write(debug_fd,p,strlen(p));
	write(debug_fd,">\n\r",3);
	free(p);
}

void
TellEm(char *fmt, ...)
{
	char *p;
	va_list ap;
	p = Malloc(2048);
	va_start(ap,fmt);
	vsnprintf(p, 2048, fmt, ap);
	va_end(ap);
	strip_trailing_newlines(p);
	write(debug_fd,"Progress <",10);
	write(debug_fd,p,strlen(p));
	write(debug_fd,">\n\r",3);
	if(!on_serial) {
		dialog_clear_norefresh();
		dialog_msgbox("Progress", p, -1, -1, 0);
	}
	free(p);
}

void
Fatal(char *fmt, ...)
{
	char *p;
	va_list ap;
	p = Malloc(2048);
	va_start(ap,fmt);
	vsnprintf(p, 2048, fmt, ap);
	va_end(ap);
	strip_trailing_newlines(p);
	if (dialog_active && !on_serial)
		dialog_msgbox("Fatal", p, -1, -1, 1);
	else
		fprintf(stderr, "Fatal -- %s\n", p);
	free(p);
	ExitSysinstall();
}

void
AskAbort(char *fmt, ...)
{
	char *p;
	va_list ap;

	p = Malloc(2048);
	va_start(ap,fmt);
	vsnprintf(p, 2048, fmt, ap);
	va_end(ap);
	strcat(p, "\n\nDo you wish to abort the installation?");
	if (!dialog_yesno("Abort", p, -1, -1)) {
		dialog_clear_norefresh();
		Abort();
	}
	dialog_clear();
	free(p);
}

void
Abort()
{
	if (dialog_yesno("Exit sysinstall","\n\nAre you sure you want to quit?",
						  -1, -1)) {
		dialog_clear();
		return;
	}
	ExitSysinstall();
}

void
ExitSysinstall()
{
	if (dialog_active) {
		clear();
		dialog_update();
	}
	if (getpid() == 1) {
		if (reboot(RB_AUTOBOOT) == -1)
			if (dialog_active) {
				clear();
				dialog_msgbox(TITLE, "\n\nCan't reboot machine -- hit reset button",
						 -1,-1,0);
			} else
				fprintf(stderr, "Can't reboot the machine -- hit the reset button");
			while(1);
	} else {
		if (dialog_active) {
			end_dialog();
			dialog_active = 0;
		}
		exit(0);
	}
}

void *
Malloc(size_t size)
{
	void *p = malloc(size);
	if (!p) {
		exit(7); /* XXX longjmp bad */
	}
	return p;
}

char *
StrAlloc(char *str) 
{
	char *p;

	p = (char *)Malloc(strlen(str) + 1);
	strcpy(p,str);
	return p;
}

void
MountUfs(char *device, char *mountpoint, int do_mkdir, int flags)
{
	struct ufs_args ufsargs;
	char dbuf[90];

	memset(&ufsargs,0,sizeof ufsargs);

	if(do_mkdir && access(mountpoint,R_OK)) {
		Mkdir(mountpoint, TRUE);
	}

	strcpy(dbuf,"/dev/");
	strcat(dbuf,device);
	
	TellEm("mount %s %s",dbuf,mountpoint); 
	ufsargs.fspec = dbuf;
	if (mount(MOUNT_UFS, mountpoint, flags, (caddr_t) &ufsargs) == -1) {
		Fatal("Error mounting %s on %s : %s\n",
			dbuf, mountpoint, strerror(errno));
	}
}

void
Mkdir(char *ipath, int die)
{
	struct stat sb;
	int final=0;
	char *p,*path=StrAlloc(ipath);

	Debug("mkdir(%s)",path);
	p = path;
	if (p[0] == '/')		/* Skip leading '/'. */
		++p;
	for (;!final; ++p) {
		if (p[0] == '\0' || (p[0] == '/' && p[1] == '\0'))
			final++;
		else if (p[0] != '/')
			continue;
		*p = '\0';
		if (stat(path, &sb)) {
			if (errno != ENOENT && die)
				Fatal("Couldn't stat directory %s: %s\n",
					path,strerror(errno));
			Debug("mkdir(%s..)",path);
		        if (mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO) < 0 &&
			    die)
				Fatal("Couldn't create directory %s: %s\n",
					path,strerror(errno));
		}
		*p = '/';
	}
	free(path);
	return;
}

void
Link(char *from, char *to)
{
	TellEm("ln %s %s", from, to);
	if(fixit)
	    unlink(to);
	if (link(from, to) == -1)
		Fatal("Couldn't create link: %s -> %s\n", from, to);
}

void
CopyFile(char *p1, char *p2)
{
	char buf[BUFSIZ];
	int fd1,fd2;
	int i;
	struct stat st;

	TellEm("Copy %s to %s",p1,p2);
	fd1 = open(p1,O_RDONLY);
	if (fd1 < 0) Fatal("Couldn't open %s: %s\n",p1,strerror(errno));
	fd2 = open(p2,O_TRUNC|O_CREAT|O_WRONLY,0200);
	if (fd2 < 0) Fatal("Couldn't open %s: %s\n",p2,strerror(errno));
	for(;;) {
		i = read(fd1,buf,sizeof buf);
		if (i > 0)
			if (i != write(fd2,buf,i)) {
				Fatal("Write errror on %s: %s\n",
					p2,strerror(errno));
			}
		if (i != sizeof buf)
			break;
	}
	fstat(fd1,&st);
	fchmod(fd2,st.st_mode & 07777);
	fchown(fd2,st.st_uid,st.st_gid);
	close(fd1);
	close(fd2);
}

u_long
PartMb(struct disklabel *lbl,int part)
{
	u_long l;
	l = 1024*1024/lbl->d_secsize;
	return (lbl->d_partitions[part].p_size + l/2)/l;
}

void
CleanMount(int disk, int part)
{
    int i = MP[disk][part];
    Faction[i] = 0;
    if (Fmount[i]) {
        free(Fmount[i]);
        Fmount[i] = 0;
    }           
    if (Fname[i]) {
        free(Fname[i]);
        Fname[i] = 0;
    }       
    if (Ftype[i]) {
        free(Ftype[i]);
        Ftype[i] = 0;
    }
    MP[disk][part] = 0;
}

char *
SetMount(int disk, int part, char *path)
{
    int k;
    char buf[80];

    CleanMount(disk,part);
    for (k = 1; k < MAX_NO_FS; k++)
	if (!Fmount[k])
	    break;

    if (k >= MAX_NO_FS) 
	return "Maximum number of filesystems exceeded";

    Fmount[k] = StrAlloc(path);
    sprintf(buf, "%s%c", Dname[disk], part + 'a');
    Fname[k] = StrAlloc(buf);
    switch (Dlbl[disk]->d_partitions[part].p_fstype) {
	case FS_BSDFFS:
	    Ftype[k] = StrAlloc("ufs");
	    if(!fixit)
		Faction[k] = 1;
	    break;
	case FS_MSDOS:
	    Ftype[k] = StrAlloc("msdos");
	    Faction[k] = 0;
	    break;
	case FS_SWAP:
	    Ftype[k] = StrAlloc("swap");
	    Faction[k] = 1;
	    break;
	default:
	    CleanMount(disk,part);
	    return "Unknown filesystem-type";
    }
    Fsize[k] = (Dlbl[disk]->d_partitions[part].p_size+1024)/2048;
    
    MP[disk][part] = k;
    return NULL;
}

void
enable_label(int fd)
{ 
	int flag = 1;
	if (ioctl(fd, DIOCWLABEL, &flag) < 0) 
	    Fatal("ioctl(DIOCWLABEL,1) failed: %s",strerror(errno));
}

void
disable_label(int fd)
{  
	int flag = 0;
	if (ioctl(fd, DIOCWLABEL, &flag) < 0) 
	    Fatal("ioctl(DIOCWLABEL,0) failed: %s",strerror(errno));
}