static thread_local bool saved_machine_id_valid = false;
_cleanup_close_ int fd = -1;
char buf[33];
- ssize_t k;
unsigned j;
sd_id128_t t;
+ int r;
assert_return(ret, -EINVAL);
if (fd < 0)
return -errno;
- k = loop_read(fd, buf, 33, false);
- if (k < 0)
- return (int) k;
-
- if (k != 33)
- return -EIO;
-
+ r = loop_read_exact(fd, buf, 33, false);
+ if (r < 0)
+ return r;
if (buf[32] !='\n')
return -EIO;
static thread_local bool saved_boot_id_valid = false;
_cleanup_close_ int fd = -1;
char buf[36];
- ssize_t k;
unsigned j;
sd_id128_t t;
char *p;
+ int r;
assert_return(ret, -EINVAL);
if (fd < 0)
return -errno;
- k = loop_read(fd, buf, 36, false);
- if (k < 0)
- return (int) k;
-
- if (k != 36)
- return -EIO;
+ r = loop_read_exact(fd, buf, 36, false);
+ if (r < 0)
+ return r;
for (j = 0, p = buf; j < 16; j++) {
int a, b;
- if (p >= buf + k)
+ if (p >= buf + 35)
return -EIO;
- if (*p == '-')
+ if (*p == '-') {
p++;
+ if (p >= buf + 35)
+ return -EIO;
+ }
a = unhexchar(p[0]);
b = unhexchar(p[1]);
/* Turn this into a valid v4 UUID, to be nice. Note that we
* only guarantee this for newly generated UUIDs, not for
- * pre-existing ones.*/
+ * pre-existing ones. */
*ret = make_v4_uuid(t);
return 0;