text: /*
   *
   *   Copyright (c) International Business Machines  Corp., 2001
   *   Copyright (c) Red Hat Inc., 2007
   *
   *   This program is free software;  you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
   *   the GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program;  if not, write to the Free Software
   *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  /*
   * NAME
   *	sendfile05.c
   *
   * DESCRIPTION
   *	Testcase to test that sendfile(2) system call returns EINVAL
   *	when passing negative offset.
   *
   * USAGE:  <for command-line>
   *  sendfile05 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
   *     where,
   *             -f   : Turn off functionality Testing.
   *             -i n : Execute test n times.
   *             -I x : Execute test for x seconds.
   *             -P x : Pause for x seconds between iterations.
   *             -t   : Turn on syscall timing.
   *
   * HISTORY
   *	11/2007 Copyed from sendfile02.c by Masatake YAMATO
   *
   * RESTRICTIONS
   *	NONE
   */
  #include <stdio.h>
  #include <errno.h>
  #include <fcntl.h>
  #include <sys/stat.h>
  #include <sys/sendfile.h>
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <sys/mman.h>
  #include <netinet/in.h>
  #include <arpa/inet.h>
  #include "test.h"
  #include "safe_macros.h"
  
  #ifndef OFF_T
  #define OFF_T off_t
  #endif /* Not def: OFF_T */
  
  TCID_DEFINE(sendfile05);
  
  char in_file[100];
  char out_file[100];
  int out_fd;
  pid_t child_pid;
  static int sockfd, s;
  static struct sockaddr_in sin1;	/* shared between do_child and create_server */
  
  void cleanup(void);
  void do_child(void);
  void setup(void);
  int create_server(void);
  
  int TST_TOTAL = 1;
  
  #ifdef UCLINUX
  static char *argv0;
  #endif
  
  void do_sendfile(void)
  {
  	OFF_T offset;
  	int in_fd;
  	struct stat sb;
  
  	out_fd = create_server();
  
  	if ((in_fd = open(in_file, O_RDONLY)) < 0) {
  		tst_brkm(TBROK, cleanup, "open failed: %d", errno);
  	}
  	SAFE_STAT(cleanup, in_file, &sb);
  
  	offset = -1;
  	TEST(sendfile(out_fd, in_fd, &offset, sb.st_size));
  
  	if (TEST_RETURN != -1) {
  		tst_resm(TFAIL, "call succeeded unexpectedly");
  	} else {
  		if (TEST_ERRNO != EINVAL) {
  			tst_resm(TFAIL, "sendfile returned unexpected "
  				 "errno, expected: %d, got: %d",
  				 EINVAL, TEST_ERRNO);
  		} else {
  			tst_resm(TPASS, "sendfile() returned %d : %s",
  				 TEST_ERRNO, strerror(TEST_ERRNO));
  		}
  	}
  
  	shutdown(sockfd, SHUT_RDWR);
  	shutdown(s, SHUT_RDWR);
  	kill(child_pid, SIGKILL);
  	close(in_fd);
  }
  
  /*
   * do_child
   */
  void do_child(void)
  {
  	int lc;
  	socklen_t length;
  	char rbuf[4096];
  
  	for (lc = 0; TEST_LOOPING(lc); lc++) {
  		length = sizeof(sin1);
  		recvfrom(sockfd, rbuf, 4096, 0, (struct sockaddr *)&sin1,
  			 &length);
  	}
  	exit(0);
  }
  
  /*
   * setup() - performs all ONE TIME setup for this test.
   */
  void setup(void)
  {
  	int fd;
  	char buf[100];
  
  	tst_sig(FORK, DEF_HANDLER, cleanup);
  
  	TEST_PAUSE;
  
  	/* make a temporary directory and cd to it */
  	tst_tmpdir();
  	sprintf(in_file, "in.%d", getpid());
  	if ((fd = creat(in_file, 00700)) < 0) {
  		tst_brkm(TBROK, cleanup, "creat failed in setup, errno: %d",
  			 errno);
  	}
  	sprintf(buf, "abcdefghijklmnopqrstuvwxyz");
  	if (write(fd, buf, strlen(buf)) < 0) {
  		tst_brkm(TBROK, cleanup, "write failed, errno: %d", errno);
  	}
  	close(fd);
  	sprintf(out_file, "out.%d", getpid());
  }
  
  /*
   * cleanup() - performs all ONE TIME cleanup for this test at
   *	       completion or premature exit.
   */
  void cleanup(void)
  {
  
  	close(out_fd);
  	/* delete the test directory created in setup() */
  	tst_rmdir();
  
  }
  
  int create_server(void)
  {
  	static int count = 0;
  	socklen_t slen = sizeof(sin1);
  
  	sockfd = socket(PF_INET, SOCK_DGRAM, 0);
  	if (sockfd < 0) {
  		tst_brkm(TBROK, cleanup, "call to socket() failed: %s",
  			 strerror(errno));
  		return -1;
  	}
  	sin1.sin_family = AF_INET;
  	sin1.sin_port = 0; /* pick random free port */
  	sin1.sin_addr.s_addr = INADDR_ANY;
  	count++;
  	if (bind(sockfd, (struct sockaddr *)&sin1, sizeof(sin1)) < 0) {
  		tst_brkm(TBROK, cleanup, "call to bind() failed: %s",
  			 strerror(errno));
  		return -1;
  	}
  	SAFE_GETSOCKNAME(cleanup, sockfd, (struct sockaddr *)&sin1, &slen);
  
  	child_pid = FORK_OR_VFORK();
  	if (child_pid < 0) {
  		tst_brkm(TBROK, cleanup, "client/server fork failed: %s",
  			 strerror(errno));
  		return -1;
  	}
  	if (!child_pid) {	/* child */
  #ifdef UCLINUX
  		if (self_exec(argv0, "") < 0) {
  			tst_brkm(TBROK, cleanup, "self_exec failed");
  			return -1;
  
  		}
  #else
  		do_child();
  #endif
  	}
  
  	s = socket(PF_INET, SOCK_DGRAM, 0);
  	inet_aton("127.0.0.1", &sin1.sin_addr);
  	if (s < 0) {
  		tst_brkm(TBROK, cleanup, "call to socket() failed: %s",
  			 strerror(errno));
  		return -1;
  	}
  	SAFE_CONNECT(cleanup, s, (struct sockaddr *)&sin1, sizeof(sin1));
  	return s;
  
  }
  
  int main(int ac, char **av)
  {
  	int lc;
  
  	tst_parse_opts(ac, av, NULL, NULL);
  #ifdef UCLINUX
  	argv0 = av[0];
  	maybe_run_child(&do_child, "");
  #endif
  
  	setup();
  
  	/*
  	 * The following loop checks looping state if -c option given
  	 */
  	for (lc = 0; TEST_LOOPING(lc); lc++) {
  		tst_count = 0;
  
  		do_sendfile();
  	}
  	cleanup();
  
  	tst_exit();
  }
  