return random() * RAND_MAX + random();
}
+unsigned random_u(void) {
+ _cleanup_close_ int fd;
+ unsigned u;
+ ssize_t r;
+
+ fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0)
+ goto fallback;
+
+ r = loop_read(fd, &u, sizeof(u), true);
+ if (r != sizeof(u))
+ goto fallback;
+
+ return u;
+
+fallback:
+ return random() * RAND_MAX + random();
+}
+
void rename_process(const char name[8]) {
assert(name);
return 0;
}
-int copy_file(const char *from, const char *to) {
- int r, fdf, fdt;
+int copy_file(const char *from, const char *to, int flags) {
+ _cleanup_close_ int fdf = -1;
+ int r, fdt;
assert(from);
assert(to);
if (fdf < 0)
return -errno;
- fdt = open(to, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOCTTY, 0644);
- if (fdt < 0) {
- close_nointr_nofail(fdf);
+ fdt = open(to, flags|O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0644);
+ if (fdt < 0)
return -errno;
- }
for (;;) {
char buf[PIPE_BUF];
if (n < 0) {
r = -errno;
- close_nointr_nofail(fdf);
close_nointr(fdt);
unlink(to);
if (n != k) {
r = k < 0 ? k : (errno ? -errno : -EIO);
- close_nointr_nofail(fdf);
close_nointr(fdt);
-
unlink(to);
+
return r;
}
}
- close_nointr_nofail(fdf);
r = close_nointr(fdt);
if (r < 0) {