[patch] random.4: Update description about O_NONBLOCK flag

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The O_NONBLOCK flag has been removed since Linux 5.6 and this patch
states this change in man page.

The commit that introduce this change in the Linux kernel is
30c08efec888 ("random: make /dev/random be almost like /dev/urandom")

Signed-off-by: GUO Zihua <guozihua@xxxxxxxxxx>
---
 man4/random.4 | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/man4/random.4 b/man4/random.4
index bea860e7f0d7..5b2094931449 100644
--- a/man4/random.4
+++ b/man4/random.4
@@ -68,7 +68,12 @@ high quality randomness, and can afford indeterminate delays.
 .PP
 When the entropy pool is empty, reads from \fI/dev/random\fP will block
 until additional environmental noise is gathered.
-If
+Since Linux 5.6, the
+.B O_NONBLOCK
+flag is removed as
+.I /dev/random
+will no longer block except during 
+early boot process. In eariler versions, if
 .BR open (2)
 is called for
 .I /dev/random
-- 
2.36.0




[Index of Archives]     [Kernel Documentation]     [Netdev]     [Linux Ethernet Bridging]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux