[PATCH bpf-next v3 1/2] selftests/bpf: Add F_SETFL for fcntl in test_sockmap

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

 



From: Geliang Tang <tanggeliang@xxxxxxxxxx>

Incorrect arguments are passed to fcntl() in test_sockmap.c when invoking
it to set file status flags. If O_NONBLOCK is used as 2nd argument and
passed into fcntl, -EINVAL will be returned (See do_fcntl() in fs/fcntl.c).
The correct approach is to use F_SETFL as 2nd argument, and O_NONBLOCK as
3rd one.

In nonblock mode, if EWOULDBLOCK is received, continue receiving, otherwise
some subtests of test_sockmap will fail.

Fixes: 16962b2404ac ("bpf: sockmap, add selftests")
Signed-off-by: Geliang Tang <tanggeliang@xxxxxxxxxx>
---
 tools/testing/selftests/bpf/test_sockmap.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c
index 024a0faafb3b..4f32a5eb3864 100644
--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -603,7 +603,7 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt,
 		struct timeval timeout;
 		fd_set w;
 
-		fcntl(fd, fd_flags);
+		fcntl(fd, F_SETFL, fd_flags);
 		/* Account for pop bytes noting each iteration of apply will
 		 * call msg_pop_data helper so we need to account for this
 		 * by calculating the number of apply iterations. Note user
@@ -678,6 +678,9 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt,
 					perror("recv failed()");
 					goto out_errno;
 				}
+				fd_flags = fcntl(fd, F_GETFL);
+				if (fd_flags & O_NONBLOCK)
+					continue;
 			}
 
 			s->bytes_recvd += recv;
-- 
2.40.1





[Index of Archives]     [Linux Samsung SoC]     [Linux Rockchip SoC]     [Linux Actions SoC]     [Linux for Synopsys ARC Processors]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]


  Powered by Linux