meson: make user $PATH configurable

[thirdparty/systemd.git] / src / basic / random-util.h

diff --git a/src/basic/random-util.h b/src/basic/random-util.h
index 3e8c288d3d00f38c077bb205b6218d93f33cecb6..facc11b976fbdba8376920af2966cb3f6cb4de21 100644 (file)
--- a/src/basic/random-util.h
+++ b/src/basic/random-util.h
@@ -8,11 +8,11 @@
 typedef enum RandomFlags {
         RANDOM_EXTEND_WITH_PSEUDO = 1 << 0, /* If we can't get enough genuine randomness, but some, fill up the rest with pseudo-randomness */
         RANDOM_BLOCK              = 1 << 1, /* Rather block than return crap randomness (only if the kernel supports that) */
-        RANDOM_DONT_DRAIN         = 1 << 2, /* If we can't get any randomness at all, return early with -EAGAIN */
+        RANDOM_MAY_FAIL           = 1 << 2, /* If we can't get any randomness at all, return early with -ENODATA */
         RANDOM_ALLOW_RDRAND       = 1 << 3, /* Allow usage of the CPU RNG */
 } RandomFlags;
 
-int genuine_random_bytes(void *p, size_t n, RandomFlags flags); /* returns "genuine" randomness, optionally filled upwith pseudo random, if not enough is available */
+int genuine_random_bytes(void *p, size_t n, RandomFlags flags); /* returns "genuine" randomness, optionally filled up with pseudo random, if not enough is available */
 void pseudo_random_bytes(void *p, size_t n);                    /* returns only pseudo-randommess (but possibly seeded from something better) */
 void random_bytes(void *p, size_t n);                           /* returns genuine randomness if cheaply available, and pseudo randomness if not. */
 
@@ -31,3 +31,9 @@ static inline uint32_t random_u32(void) {
 }
 
 int rdrand(unsigned long *ret);
+
+/* Some limits on the pool sizes when we deal with the kernel random pool */
+#define RANDOM_POOL_SIZE_MIN 512U
+#define RANDOM_POOL_SIZE_MAX (10U*1024U*1024U)
+
+size_t random_pool_size(void);