46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2015.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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stdio/tmpfile.cpp
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Opens an unnamed temporary file.
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*******************************************************************************/
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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extern "C" FILE* tmpfile()
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{
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// TODO: There is a short interval during which other processes can access
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// this file. Implement and use O_TMPFILE.
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char path[] = "/tmp/tmp.XXXXXX";
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int fd = mkstemp(path);
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if ( fd < 0 )
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return (FILE*) NULL;
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if ( unlink(path) < 0 )
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return close(fd), (FILE*) NULL;
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FILE* fp = fdopen(fd, "r+");
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if ( !fp )
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return close(fd), (FILE*) NULL;
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return fp;
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}
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