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authorJaremy Creechley <creechley@gmail.com>2021-11-14 03:49:30 -0800
committerGitHub <noreply@github.com>2021-11-14 12:49:30 +0100
commit6976d18519d102c9cc857a84a4b10b009c1e1a38 (patch)
tree83dc40e9c9809ffe39fa70a7b3247b31c27c2158 /lib/std/sysrand.nim
parentbec490016548e73f01317736ff8863f9ce6aab31 (diff)
downloadNim-6976d18519d102c9cc857a84a4b10b009c1e1a38.tar.gz
Implement zephyr urandom and monotime (#19142)
* implement urandom for Zephyr

* add monotime on zephyr

Co-authored-by: Jaremy Creechley <jaremy.creechley@panthalassa.com>
Diffstat (limited to 'lib/std/sysrand.nim')
-rw-r--r--lib/std/sysrand.nim12
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/std/sysrand.nim b/lib/std/sysrand.nim
index 6b354e5a3..1b7b2c024 100644
--- a/lib/std/sysrand.nim
+++ b/lib/std/sysrand.nim
@@ -63,7 +63,7 @@ when defined(posix):
   import posix
 
 const
-  batchImplOS = defined(freebsd) or defined(openbsd) or (defined(macosx) and not defined(ios))
+  batchImplOS = defined(freebsd) or defined(openbsd) or defined(zephyr) or (defined(macosx) and not defined(ios))
   batchSize {.used.} = 256
 
 when batchImplOS:
@@ -207,6 +207,16 @@ elif defined(openbsd):
   proc getRandomImpl(p: pointer, size: int): int {.inline.} =
     result = getentropy(p, cint(size)).int
 
+elif defined(zephyr):
+  proc sys_csrand_get(dst: pointer, length: csize_t): cint {.importc: "sys_csrand_get", header: "<random/rand32.h>".}
+    # Fill the destination buffer with cryptographically secure
+    # random data values
+    # 
+
+  proc getRandomImpl(p: pointer, size: int): int {.inline.} =
+    # 0 if success, -EIO if entropy reseed error
+    result = sys_csrand_get(p, csize_t(size)).int
+
 elif defined(freebsd):
   type cssize_t {.importc: "ssize_t", header: "<sys/types.h>".} = int