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examples/usrsocktest: correct return value check of dup2()

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DUP(2) Linux Programmer's Manual

NAME
       dup, dup2, dup3 - duplicate a file descriptor
...
RETURN VALUE
       On success, these system calls return the new file descriptor.
       On error, -1 is returned, and errno is set appropriately.

Signed-off-by: chao an <anchao@xiaomi.com>
This commit is contained in:
chao an 2022-08-31 22:48:45 +08:00 committed by Xiang Xiao
parent c427f408cb
commit a8d2924c55
1 changed files with 1 additions and 1 deletions
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2
examples/usrsocktest/usrsocktest_basic_daemon.c
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@ -333,7 +333,7 @@ static void basic_daemon_dup2(FAR struct usrsocktest_daemon_conf_s *dconf)
TEST_ASSERT_EQUAL(2, usrsocktest_daemon_get_num_active_sockets());
ret = dup2(sd2, sd);
TEST_ASSERT_EQUAL(0, ret);
TEST_ASSERT_EQUAL(sd, ret);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
ret = close(sd2);