lnav/test/test_auto_fd.cc

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/**
* Copyright (c) 2007-2012, Timothy Stack
*
* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
#include <unistd.h>
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#include "base/auto_fd.hh"
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#include "config.h"
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int
main(int argc, char* argv[])
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{
int retval = EXIT_SUCCESS;
auto_fd fd1, fd2;
int tmp;
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assert(fd1 == -1);
tmp = open("/dev/null", O_RDONLY);
assert(tmp != -1);
fd1 = tmp;
fd1 = tmp;
assert(fcntl(tmp, F_GETFL) >= 0);
fd1 = std::move(fd2);
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assert(fcntl(tmp, F_GETFL) == -1);
assert(errno == EBADF);
assert(fd1 == -1);
tmp = open("/dev/null", O_RDONLY);
assert(tmp != -1);
fd1 = tmp;
*fd1.out() = STDOUT_FILENO;
assert(fcntl(tmp, F_GETFL) == -1);
assert(errno == EBADF);
{
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auto_fd fd_cp(fd1.dup());
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assert(fd1 == STDOUT_FILENO);
assert(fd_cp != STDOUT_FILENO);
assert(fd_cp != -1);
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tmp = (int) fd_cp;
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}
{
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auto_fd fd_cp(fd1.dup());
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assert(fd_cp == tmp);
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}
assert(fd1.release() == STDOUT_FILENO);
assert(fd1 == -1);
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return retval;
}