63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2004
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* 07/2004 Written by Dan Jones
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* 07/2004 Ported to LTP format by Robbie Williamson
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* Copyright (c) 2019 Martin Doucha <mdoucha@suse.cz>
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*/
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/*
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* Test Description:
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* Make sure bind() of privileged port gives EACCESS error for non-root users.
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*/
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#include <string.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <grp.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include "tst_test.h"
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/* This port needs to be a privileged port */
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#define TCP_PRIVILEGED_PORT 463
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#define TEST_USERNAME "nobody"
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static void run(void)
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{
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struct sockaddr_in servaddr;
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int sockfd;
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sockfd = SAFE_SOCKET(AF_INET, SOCK_STREAM, 0);
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memset(&servaddr, 0, sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_port = htons(TCP_PRIVILEGED_PORT);
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servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
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TST_EXP_FAIL(bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)),
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EACCES, "bind()");
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SAFE_CLOSE(sockfd);
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}
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static void setup(void)
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{
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struct passwd *pw;
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struct group *gr;
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pw = SAFE_GETPWNAM(TEST_USERNAME);
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gr = SAFE_GETGRGID(pw->pw_gid);
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tst_res(TINFO, "Switching credentials to user: %s, group: %s",
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pw->pw_name, gr->gr_name);
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SAFE_SETEGID(gr->gr_gid);
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SAFE_SETEUID(pw->pw_uid);
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}
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static struct tst_test test = {
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.test_all = run,
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.needs_root = 1,
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.setup = setup,
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};
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