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Message-ID: <20250324222221.6871-1-contact@hacktivis.me>
Date: Mon, 24 Mar 2025 23:22:21 +0100
From: "Haelwenn (lanodan) Monnier" <contact@...ktivis.me>
To: musl@...ts.openwall.com
Cc: "Haelwenn (lanodan) Monnier" <contact@...ktivis.me>
Subject: [PATCH] limits.h: define GETENTROPY_MAX
Part of POSIX.1-2024, added at the same time as getentropy() in Issue 1134:
https://www.austingroupbugs.net/view.php?id=1134
---
include/limits.h | 1 +
src/misc/getentropy.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/limits.h b/include/limits.h
index 53a27b9d..c0085080 100644
--- a/include/limits.h
+++ b/include/limits.h
@@ -84,6 +84,7 @@
#define LINE_MAX 4096
#define RE_DUP_MAX 255
+#define GETENTROPY_MAX 256
#define NL_ARGMAX 9
#define NL_MSGMAX 32767
#define NL_SETMAX 255
diff --git a/src/misc/getentropy.c b/src/misc/getentropy.c
index 651ea95f..58004891 100644
--- a/src/misc/getentropy.c
+++ b/src/misc/getentropy.c
@@ -3,13 +3,14 @@
#include <sys/random.h>
#include <pthread.h>
#include <errno.h>
+#include <limits.h>
int getentropy(void *buffer, size_t len)
{
int cs, ret = 0;
char *pos = buffer;
- if (len > 256) {
+ if (len > GETENTROPY_MAX) {
errno = EIO;
return -1;
}
--
2.48.1
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