Author: dchagin
Date: Sun Jun 11 09:33:09 2017
New Revision: 319823
URL: https://svnweb.freebsd.org/changeset/base/319823
Log:
MFC r319571:
On success, getrandom() Linux system call returns the number of bytes that
were copied to the buffer supplied by the user.
PR: 219464
Submitted by: Maciej Pasternacki
Reported by: Maciej Pasternacki
Approved by: re (kib)
Modified:
stable/11/sys/compat/linux/linux_misc.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/compat/linux/linux_misc.c
==============================================================================
--- stable/11/sys/compat/linux/linux_misc.c Sun Jun 11 04:03:09 2017
(r319822)
+++ stable/11/sys/compat/linux/linux_misc.c Sun Jun 11 09:33:09 2017
(r319823)
@@ -2516,6 +2516,7 @@ linux_getrandom(struct thread *td, struct linux_getran
{
struct uio uio;
struct iovec iov;
+ int error;
if (args->flags & ~(LINUX_GRND_NONBLOCK|LINUX_GRND_RANDOM))
return (EINVAL);
@@ -2532,7 +2533,10 @@ linux_getrandom(struct thread *td, struct linux_getran
uio.uio_rw = UIO_READ;
uio.uio_td = td;
- return (read_random_uio(&uio, args->flags & LINUX_GRND_NONBLOCK));
+ error = read_random_uio(&uio, args->flags & LINUX_GRND_NONBLOCK);
+ if (error == 0)
+ td->td_retval[0] = args->count - uio.uio_resid;
+ return (error);
}
int
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