Hi, On 8/2/22 05:53, GUO Zihua wrote:
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>
Please see a minor formatting issue below. Thanks for the patch. Cheers, Alex
--- 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
s/\. /.\n/
See man-pages(7):
Use semantic newlines
In the source of a manual page, new sentences should be
started on new lines, long sentences should be split into
lines at clause breaks (commas, semicolons, colons, and
so on), and long clauses should be split at phrase bound‐
aries. This convention, sometimes known as "semantic
newlines", makes it easier to see the effect of patches,
which often operate at the level of individual sentences,
clauses, or phrases.
.BR open (2) is called for .I /dev/random
-- Alejandro Colomar <http://www.alejandro-colomar.es/>
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