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#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#define BML_UNLOCK_ALL 0x8A29 ///< unlock all partition RO -> RW
int main(int argc, char** argv) {
char buf[4096];
int dstfd, srcfd, bytes_read, bytes_written, total_read = 0;
if (argc != 3)
return 1;
if (argv[1][0] == '-' && argv[1][1] == 0)
srcfd = 0;
else {
srcfd = open(argv[1], O_RDONLY | O_LARGEFILE);
if (srcfd < 0)
return 2;
}
dstfd = open(argv[2], O_RDWR | O_LARGEFILE);
if (dstfd < 0)
return 3;
if (ioctl(dstfd, BML_UNLOCK_ALL, 0))
return 4;
do {
total_read += bytes_read = read(srcfd, buf, 4096);
if (!bytes_read)
break;
if (bytes_read < 4096)
memset(&buf[bytes_read], 0, 4096 - bytes_read);
if (write(dstfd, buf, 4096) < 4096)
return 5;
} while(bytes_read == 4096);
return 0;
}
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