84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/*
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* Copyright (c) 2018 Michael Moese <mmoese@suse.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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/* The commit 0fb44559ffd6 af_unix: move unix_mknod() out of bindlock
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* changed the behavior of bind() for STREAM UNIX domain sockets if
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*/
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tst_kvercmp.h"
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#include "tst_test.h"
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#include "tst_safe_net.h"
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#define SNAME_A "socket.1"
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#define SNAME_B "socket.2"
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static int sock1, sock2;
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static struct sockaddr_un sun1, sun2;
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static void run(void)
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{
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/*
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* Once a STREAM UNIX domain socket has been bound, it can't be
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* rebound.
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*/
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TST_EXP_FAIL(bind(sock1, (struct sockaddr *)&sun2, sizeof(sun2)),
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EINVAL, "re-bind() socket");
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/*
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* Since a socket is already bound to the pathname, it can't be bound
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* to a second socket. Expected error is EADDRINUSE.
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*/
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TST_EXP_FAIL(bind(sock2, (struct sockaddr *)&sun1, sizeof(sun1)),
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EADDRINUSE, "bind() with bound pathname");
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/*
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* Kernel is buggy since it creates the node in fileystem first, then
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* locks the socket and does all the checks and the node is not removed
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* in the error path. For now we will unlink the node here so that the
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* test works fine when the run() function is executed in a loop.
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*/
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unlink(SNAME_B);
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}
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static void setup(void)
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{
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sock1 = SAFE_SOCKET(PF_UNIX, SOCK_STREAM, 0);
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sock2 = SAFE_SOCKET(PF_UNIX, SOCK_STREAM, 0);
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sun1.sun_family = AF_UNIX;
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sun2.sun_family = AF_UNIX;
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if (sprintf(sun1.sun_path, "%s", SNAME_A) < (int) strlen(SNAME_A)) {
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tst_res(TFAIL, "sprintf failed");
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return;
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}
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if (sprintf(sun2.sun_path, "%s", SNAME_B) < (int) strlen(SNAME_B)) {
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tst_res(TFAIL, "sprintf failed");
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return;
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}
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SAFE_BIND(sock1, (struct sockaddr *)&sun1, sizeof(sun1));
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}
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static void cleanup(void)
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{
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SAFE_CLOSE(sock1);
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SAFE_CLOSE(sock2);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test_all = run,
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.needs_tmpdir = 1,
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};
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