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Add load_chainloader()

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This commit is contained in:
Laurent Vivier 2007-10-10 17:14:42 +00:00
parent ce315dd349
commit 41b81d76fb
2 changed files with 31 additions and 0 deletions
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30
second/load.c
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@ -262,3 +262,33 @@ char *load_ramdisk(char* path, unsigned long *ramdisk_size)
return ramdisk_start;
}
char* load_chainloader(char *path)
{
stream_t *stream;
struct stream_stat stat;
char *loader;
int ret;
stream = stream_open(path);
if (stream == NULL)
{
printf("Cannot load chainloader\n");
return NULL;
}
stream_fstat(stream, &stat);
loader = (char*)malloc(stat.st_size + 4);
loader = (char*)(((unsigned long)loader + 3) & 0xFFFFFFFC);
ret = stream_read(stream, loader, stat.st_size);
stream_close(stream);
if (ret != stat.st_size)
{
free(loader);
return NULL;
}
return loader;
}

1
second/load.h
View File

@ -6,3 +6,4 @@
extern char* load_kernel(char* path, int bootstrap_size, unsigned long *base, unsigned long *entry, unsigned long *size);
extern char* load_ramdisk(char* path, unsigned long *ramdisk_size);
extern char* load_chainloader(char *path);