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#include <assert.h>
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
void write_le32(int fd, uint32_t n)
{
write(fd, &n, 4);
}
#define MIN(x,y) (x<y?x:y)
int main(int argc, char* argv[])
{
int fd = open("initrd.img", O_APPEND | O_WRONLY | O_CREAT, 0666);
char buf[32];
assert(strlen(argv[1]) < 32);
memset(buf, 0, 32);
memcpy(buf, argv[1], strlen(argv[1]));
write(fd, buf, 32);
int datafd = open(argv[1], O_RDONLY, 0666);
lseek(datafd, 0, SEEK_END);
FILE *f = fdopen(datafd, "rb");
uint32_t len = ftell(f);
write_le32(fd, ftell(f));
int ch;
lseek(datafd, 0, SEEK_SET);
do {
ch = getc(f);
if(ch != EOF)
write(fd, &ch, 1);
} while(ch != EOF);
}
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