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/* common.c - Common data structures and functions. */
/* Copyright 1992-1998 Werner Almesberger. See file COPYING for details. */
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "common.h"
#include "lilo.h"
int verbose = 0,test = 0,compact = 0,linear = 0,nowarn = 0;
unsigned short drv_map[DRVMAP_SIZE+1]; /* fixup maps ... */
int curr_drv_map;
unsigned long prt_map[PRTMAP_SIZE+1];
int curr_prt_map;
volatile void pdie(char *msg)
{
fflush(stdout);
perror(msg);
exit(1);
}
volatile void die(char *fmt,...)
{
va_list ap;
fflush(stdout);
va_start(ap,fmt);
vfprintf(stderr,fmt,ap);
va_end(ap);
fputc('\n',stderr);
exit(1);
}
void *alloc(int size)
{
void *this;
if ((this = malloc(size)) == NULL) pdie("Out of memory");
return this;
}
void *ralloc(void *old,int size)
{
void *this;
if ((this = realloc(old,size)) == NULL) pdie("Out of memory");
return this;
}
char *stralloc(const char *str)
{
char *this;
if ((this = strdup(str)) == NULL) pdie("Out of memory");
return this;
}
int to_number(char *num)
{
int number;
char *end;
number = strtol(num,&end,0);
if (end && *end) die("Not a number: \"%s\"",num);
return number;
}
static char *name(int stage)
{
switch (stage) {
case STAGE_FIRST:
return "First boot sector";
case STAGE_SECOND:
return "Second boot sector";
case STAGE_CHAIN:
return "Chain loader";
default:
die("Internal error: Unknown stage code %d",stage);
}
return NULL; /* for GCC */
}
void check_version(BOOT_SECTOR *sect,int stage)
{
if (!strncmp(sect->par_1.signature-4,"LILO",4))
die("%s has a pre-21 LILO signature",name(stage));
if (strncmp(sect->par_1.signature,"LILO",4))
die("%s doesn't have a valid LILO signature",name(stage));
if (sect->par_1.stage != stage)
die("%s has an invalid stage code (%d)",name(stage),sect->par_1.stage);
if (sect->par_1.version != VERSION)
die("%s is version %d. Expecting version %d.",name(stage),
sect->par_1.version,VERSION);
}
int stat_equal(struct stat *a,struct stat *b)
{
return a->st_dev == b->st_dev && a->st_ino == b->st_ino;
}
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