From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org
Subject: [Bug 99911] ioperm is kept on fork
Date: Tue, 15 Mar 2016 03:37:47 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=99911
Michael Kerrisk changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |CODE_FIX
--- Comment #3 from Michael Kerrisk ---
Alex, sorry for the long delay in following up.
I have applied the patch below. Closing this bug.
Cheers,
Michael
diff --git a/man2/ioperm.2 b/man2/ioperm.2
index 91d081c..6171e1c 100644
--- a/man2/ioperm.2
+++ b/man2/ioperm.2
@@ -63,11 +63,9 @@ system call had to be used (with a
argument of 3).
Since Linux 2.6.8, 65,536 I/O ports can be specified.
-Permissions are not inherited by the child created by
-.BR fork (2);
-following a
+Permissions are inherited by the child created by
.BR fork (2)
-the child must turn on those permissions that it needs.
+(but see NOTES).
Permissions are preserved across
.BR execve (2);
this is useful for giving port access permissions to unprivileged
@@ -107,6 +105,10 @@ The
.I /proc/ioports
file shows the I/O ports that are currently allocated on the system.
+Before Linux 2.4,
+permissions were not inherited by a child created by
+.BR fork (2).
+
Glibc has an
.BR ioperm ()
prototype both in
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