mirror of https://code.videolan.org/videolan/vlc
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*****************************************************************************
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* filesystem.c: Linux file system helpers
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*****************************************************************************
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* Copyright © 2018 Rémi Denis-Courmont
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*
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* Authors: Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <vlc_common.h>
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#include <vlc_fs.h>
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int vlc_memfd(void)
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{
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int fd;
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#ifdef HAVE_MEMFD_CREATE
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fd = memfd_create(PACKAGE_NAME"-memfd", MFD_CLOEXEC | MFD_ALLOW_SEALING);
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if (fd != -1 || errno != ENOSYS)
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return fd;
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#endif
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/* Fallback to open with O_TMPFILE, */
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fd = open("/tmp", O_RDWR | O_CLOEXEC | O_TMPFILE, S_IRUSR | S_IWUSR);
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if (fd != -1 || (errno != EISDIR && errno != EOPNOTSUPP))
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return fd;
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/* Fallback to POSIX implementation if O_TMPFILE is not supported (errno is
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* EISDIR, or EOPNOTSUPP, cf. man open(2). */
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char bufpath[] = "/tmp/"PACKAGE_NAME"XXXXXX";
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fd = vlc_mkstemp(bufpath);
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if (fd != -1)
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unlink(bufpath);
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return fd;
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}
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