int main(int argc, char *argv[]) {
_cleanup_close_ int sfd = -1, dfd = -1;
int r;
if (argc != 3) {
log_error("Needs two arguments.");
return EXIT_FAILURE;
}
sfd = open(argv[1], O_RDONLY|O_CLOEXEC|O_NOCTTY);
if (sfd < 0) {
log_error_errno(errno, "Can't open source file: %m");
return EXIT_FAILURE;
}
dfd = open(argv[2], O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666);
if (dfd < 0) {
log_error_errno(errno, "Can't open destination file: %m");
return EXIT_FAILURE;
}
r = qcow2_convert(sfd, dfd);
if (r < 0) {
log_error_errno(r, "Failed to unpack: %m");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
static int raw_pull_maybe_convert_qcow2(RawPull *i) {
_cleanup_close_ int converted_fd = -1;
_cleanup_free_ char *t = NULL;
int r;
assert(i);
assert(i->raw_job);
r = qcow2_detect(i->raw_job->disk_fd);
if (r < 0)
return log_error_errno(r, "Failed to detect whether this is a QCOW2 image: %m");
if (r == 0)
return 0;
/* This is a QCOW2 image, let's convert it */
r = tempfn_random(i->final_path, NULL, &t);
if (r < 0)
return log_oom();
converted_fd = open(t, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664);
if (converted_fd < 0)
return log_error_errno(errno, "Failed to create %s: %m", t);
r = chattr_fd(converted_fd, FS_NOCOW_FL, FS_NOCOW_FL);
if (r < 0)
log_warning_errno(errno, "Failed to set file attributes on %s: %m", t);
log_info("Unpacking QCOW2 file.");
r = qcow2_convert(i->raw_job->disk_fd, converted_fd);
if (r < 0) {
unlink(t);
return log_error_errno(r, "Failed to convert qcow2 image: %m");
}
(void) unlink(i->temp_path);
free(i->temp_path);
i->temp_path = t;
t = NULL;
safe_close(i->raw_job->disk_fd);
i->raw_job->disk_fd = converted_fd;
converted_fd = -1;
return 1;
}
