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$NetBSD: patch-ab,v 1.1 2002/05/09 22:16:53 agc Exp $
--- main/generator.c 2002/05/09 21:34:29 1.1
+++ main/generator.c 2002/05/09 21:34:34
@@ -3,9 +3,9 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
-#include <sys/stat.h>
#include <unistd.h>
#include <sys/types.h>
+#include <sys/stat.h>
#include <fcntl.h>
#include <ctype.h>
#include <signal.h>
@@ -147,7 +147,7 @@
char *gen_loadimage(const char *filename)
{
int file, imagetype, bytes, bytesleft;
- struct stat statbuf;
+ off_t filesize;
const char *extension;
uint8 *buffer;
unsigned int blocks, x, i;
@@ -162,20 +162,6 @@
}
/* Load file */
- if (stat(filename, &statbuf) != 0)
- return ("Unable to stat file.");
- cpu68k_romlen = statbuf.st_size;
- if (cpu68k_romlen < 0x200)
- return ("File is too small");
-
- /* allocate enough memory plus 16 bytes for disassembler to cope
- with the last instruction */
- if ((cpu68k_rom = malloc(cpu68k_romlen + 16)) == NULL) {
- cpu68k_romlen = 0;
- return ("Out of memory!");
- }
- gen_freerom = 1;
- memset(cpu68k_rom, 0, cpu68k_romlen + 16);
#ifdef ALLEGRO
if ((file = open(filename, O_RDONLY | O_BINARY, 0)) == -1) {
#else
@@ -186,6 +172,28 @@
cpu68k_romlen = 0;
return ("Unable to open file.");
}
+ if ( (filesize = lseek(file, 0, SEEK_END)) == -1 || // get size
+ lseek(file, 0, SEEK_SET) == -1) // then seek to start
+ {
+ perror ("lseek failed");
+ close (file);
+ return ("Error accessing file");
+ }
+
+ cpu68k_romlen = filesize;
+ if (cpu68k_romlen < 0x200) {
+ (void) close(file);
+ return ("File is too small");
+ }
+
+ /* allocate enough memory plus 16 bytes for disassembler to cope
+ with the last instruction */
+ if ((cpu68k_rom = malloc(cpu68k_romlen + 16)) == NULL) {
+ cpu68k_romlen = 0;
+ return ("Out of memory!");
+ }
+ gen_freerom = 1;
+ memset(cpu68k_rom, 0, cpu68k_romlen + 16);
buffer = cpu68k_rom;
bytesleft = cpu68k_romlen;
do {
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