51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
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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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stdlib/mkstemp.cpp
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Make a unique temporary filepath and opens it.
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*******************************************************************************/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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extern "C" int mkstemp(char* templ)
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{
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size_t templ_length = strlen(templ);
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for ( size_t i = 0; i < 6; i++ )
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{
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if ( templ_length - i == 0 )
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return errno = EINVAL, -1;
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if ( templ[templ_length - i - 1] != 'X' )
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return errno = EINVAL, -1;
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}
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int fd;
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do
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{
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for ( size_t i = templ_length - 6; i < templ_length; i++ )
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templ[i] = '0' + rand() % 10;
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} while ( (fd = open(templ, O_RDWR | O_EXCL | O_CREAT, 0600)) < 0 &&
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(errno == EEXIST) );
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return fd;
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}
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