2008-10-23 17:07:13 +02:00
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/*****************************************************************************
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* filesystem.c: File system helpers
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*****************************************************************************
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* Copyright (C) 2005-2006 the VideoLAN team
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* Copyright © 2005-2008 Rémi Denis-Courmont
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*
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* Authors: Rémi Denis-Courmont <rem # videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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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 <vlc_common.h>
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#include <vlc_charset.h>
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2010-02-07 14:18:02 +01:00
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#include <vlc_fs.h>
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2010-02-07 14:25:29 +01:00
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#include "libvlc.h" /* vlc_mkdir */
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2008-11-18 19:05:22 +01:00
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#include <vlc_rand.h>
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2008-10-23 17:07:13 +02:00
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#include <assert.h>
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#include <stdio.h>
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2010-04-17 20:06:00 +02:00
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#include <limits.h> /* NAME_MAX */
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2010-05-18 14:33:38 +02:00
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#if !defined(NAME_MAX) && defined(_POSIX_NAME_MAX)
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# define NAME_MAX _POSIX_NAME_MAX
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#endif
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2008-10-23 17:07:13 +02:00
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#include <errno.h>
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#include <sys/types.h>
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#ifdef HAVE_DIRENT_H
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# include <dirent.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#endif
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#ifdef WIN32
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# include <io.h>
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2010-03-31 18:07:47 +02:00
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# include <winsock2.h>
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2008-11-04 15:50:23 +01:00
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# ifndef UNDER_CE
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# include <direct.h>
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2010-03-31 18:07:47 +02:00
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# else
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# include <tchar.h>
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2008-11-04 15:50:23 +01:00
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# endif
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2008-10-23 17:07:13 +02:00
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#else
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# include <unistd.h>
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2010-03-31 18:07:47 +02:00
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# include <sys/socket.h>
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2008-10-23 17:07:13 +02:00
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#endif
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#ifndef HAVE_LSTAT
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# define lstat( a, b ) stat(a, b)
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#endif
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2008-10-23 17:27:30 +02:00
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#ifdef WIN32
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static int convert_path (const char *restrict path, wchar_t *restrict wpath)
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{
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if (!MultiByteToWideChar (CP_UTF8, 0, path, -1, wpath, MAX_PATH))
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{
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errno = ENOENT;
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return -1;
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}
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wpath[MAX_PATH] = L'\0';
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return 0;
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}
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# define CONVERT_PATH(path, wpath, err) \
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wchar_t wpath[MAX_PATH+1]; \
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if (convert_path (path, wpath)) \
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return (err)
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2008-10-23 17:07:13 +02:00
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#endif
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/**
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* Opens a system file handle.
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*
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* @param filename file path to open (with UTF-8 encoding)
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* @param flags open() flags, see the C library open() documentation
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* @return a file handle on success, -1 on error (see errno).
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2009-08-15 20:21:44 +02:00
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* @note Contrary to standard open(), this function returns file handles
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* with the close-on-exec flag enabled.
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2008-10-23 17:07:13 +02:00
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*/
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2010-02-07 14:25:29 +01:00
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int vlc_open (const char *filename, int flags, ...)
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2008-10-23 17:07:13 +02:00
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{
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2009-08-18 14:33:22 +02:00
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unsigned int mode = 0;
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2009-08-15 20:21:44 +02:00
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va_list ap;
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va_start (ap, flags);
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if (flags & O_CREAT)
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2009-08-18 14:33:22 +02:00
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mode = va_arg (ap, unsigned int);
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2009-08-15 20:21:44 +02:00
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va_end (ap);
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2009-11-04 20:45:58 +01:00
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#ifdef O_CLOEXEC
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flags |= O_CLOEXEC;
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#endif
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2008-10-23 17:07:13 +02:00
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#ifdef UNDER_CE
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/*_open translates to wchar internally on WinCE*/
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return _open (filename, flags, mode);
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#elif defined (WIN32)
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/*
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2008-10-23 17:27:30 +02:00
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* open() cannot open files with non-“ANSI” characters on Windows.
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* We use _wopen() instead. Same thing for mkdir() and stat().
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*/
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CONVERT_PATH(filename, wpath, -1);
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2008-10-23 17:07:13 +02:00
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return _wopen (wpath, flags, mode);
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#endif
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const char *local_name = ToLocale (filename);
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if (local_name == NULL)
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{
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errno = ENOENT;
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return -1;
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}
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2009-11-04 21:37:49 +01:00
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int fd = open (local_name, flags, mode);
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2009-01-27 17:04:11 +01:00
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#ifdef HAVE_FCNTL
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2009-11-04 20:45:58 +01:00
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if (fd != -1)
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fcntl (fd, F_SETFD, FD_CLOEXEC);
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2009-01-27 16:55:34 +01:00
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#endif
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2009-01-27 17:04:11 +01:00
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2008-10-23 17:07:13 +02:00
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LocaleFree (local_name);
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return fd;
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}
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/**
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* Opens a FILE pointer.
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* @param filename file path, using UTF-8 encoding
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* @param mode fopen file open mode
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* @return NULL on error, an open FILE pointer on success.
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*/
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2010-02-07 14:25:29 +01:00
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FILE *vlc_fopen (const char *filename, const char *mode)
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2008-10-23 17:07:13 +02:00
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{
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int rwflags = 0, oflags = 0;
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bool append = false;
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for (const char *ptr = mode; *ptr; ptr++)
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{
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switch (*ptr)
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{
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case 'r':
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rwflags = O_RDONLY;
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break;
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case 'a':
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rwflags = O_WRONLY;
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oflags |= O_CREAT;
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append = true;
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break;
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case 'w':
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rwflags = O_WRONLY;
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oflags |= O_CREAT | O_TRUNC;
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break;
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case '+':
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rwflags = O_RDWR;
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break;
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#ifdef O_TEXT
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case 't':
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oflags |= O_TEXT;
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break;
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#endif
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}
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}
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2010-02-07 14:25:29 +01:00
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int fd = vlc_open (filename, rwflags | oflags, 0666);
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2008-10-23 17:07:13 +02:00
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if (fd == -1)
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return NULL;
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if (append && (lseek (fd, 0, SEEK_END) == -1))
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{
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close (fd);
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return NULL;
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}
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FILE *stream = fdopen (fd, mode);
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if (stream == NULL)
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close (fd);
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return stream;
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}
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2010-02-14 12:33:23 +01:00
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/**
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* Opens a system file handle relative to an existing directory handle.
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*
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* @param dir directory file descriptor
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* @param filename file path to open (with UTF-8 encoding)
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* @param flags open() flags, see the C library open() documentation
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* @return a file handle on success, -1 on error (see errno).
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* @note Contrary to standard open(), this function returns file handles
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* with the close-on-exec flag enabled.
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*/
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int vlc_openat (int dir, const char *filename, int flags, ...)
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{
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unsigned int mode = 0;
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va_list ap;
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va_start (ap, flags);
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if (flags & O_CREAT)
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mode = va_arg (ap, unsigned int);
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va_end (ap);
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#ifdef O_CLOEXEC
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flags |= O_CLOEXEC;
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#endif
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const char *local_name = ToLocale (filename);
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if (local_name == NULL)
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{
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errno = ENOENT;
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return -1;
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}
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2010-04-10 12:34:22 +02:00
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#ifdef HAVE_OPENAT
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2010-02-14 12:33:23 +01:00
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int fd = openat (dir, local_name, flags, mode);
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# ifdef HAVE_FCNTL
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if (fd != -1)
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fcntl (fd, F_SETFD, FD_CLOEXEC);
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# endif
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#else
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int fd = -1;
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errno = ENOSYS;
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#endif
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LocaleFree (local_name);
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return fd;
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}
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2008-10-23 17:07:13 +02:00
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/**
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* Creates a directory using UTF-8 paths.
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*
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* @param dirname a UTF-8 string with the name of the directory that you
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* want to create.
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* @param mode directory permissions
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* @return 0 on success, -1 on error (see errno).
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*/
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2010-02-07 14:25:29 +01:00
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int vlc_mkdir( const char *dirname, mode_t mode )
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2008-10-23 17:07:13 +02:00
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{
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2008-11-02 20:01:55 +01:00
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#if defined (UNDER_CE)
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(void) mode;
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/* mkdir converts internally to wchar */
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return _mkdir(dirname);
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#elif defined (WIN32)
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2008-10-23 17:27:30 +02:00
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(void) mode;
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CONVERT_PATH (dirname, wpath, -1);
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return _wmkdir (wpath);
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2008-10-23 17:07:13 +02:00
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#else
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char *locname = ToLocale( dirname );
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int res;
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if( locname == NULL )
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{
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errno = ENOENT;
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return -1;
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}
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res = mkdir( locname, mode );
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LocaleFree( locname );
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return res;
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#endif
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}
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/**
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* Opens a DIR pointer.
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*
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* @param dirname UTF-8 representation of the directory name
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* @return a pointer to the DIR struct, or NULL in case of error.
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* Release with standard closedir().
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*/
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2010-02-07 14:25:29 +01:00
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DIR *vlc_opendir( const char *dirname )
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2008-10-23 17:07:13 +02:00
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{
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#ifdef WIN32
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2008-10-23 17:27:30 +02:00
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CONVERT_PATH (dirname, wpath, NULL);
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return (DIR *)vlc_wopendir (wpath);
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2008-10-23 17:07:13 +02:00
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#else
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const char *local_name = ToLocale( dirname );
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if( local_name != NULL )
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{
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DIR *dir = opendir( local_name );
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LocaleFree( local_name );
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return dir;
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}
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#endif
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errno = ENOENT;
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return NULL;
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}
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/**
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* Reads the next file name from an open directory.
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*
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* @param dir The directory that is being read
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*
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* @return a UTF-8 string of the directory entry.
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* Use free() to free this memory.
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*/
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2010-02-07 14:25:29 +01:00
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char *vlc_readdir( DIR *dir )
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2008-10-23 17:07:13 +02:00
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{
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#ifdef WIN32
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struct _wdirent *ent = vlc_wreaddir (dir);
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if (ent == NULL)
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return NULL;
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return FromWide (ent->d_name);
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#else
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struct dirent *ent;
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2010-04-17 16:43:59 +02:00
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struct
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{
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struct dirent ent;
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char buf[NAME_MAX + 1];
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} buf;
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int val = readdir_r (dir, &buf.ent, &ent);
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if (val)
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{
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errno = val;
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2008-10-23 17:07:13 +02:00
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return NULL;
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2010-04-17 16:43:59 +02:00
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}
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return ent ? vlc_fix_readdir( ent->d_name ) : NULL;
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2008-10-23 17:07:13 +02:00
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#endif
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}
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static int dummy_select( const char *str )
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{
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(void)str;
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return 1;
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}
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/**
|
2010-02-07 14:25:29 +01:00
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* Does the same as vlc_scandir(), but takes an open directory pointer
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2008-10-23 17:07:13 +02:00
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* instead of a directory path.
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*/
|
2010-02-07 14:25:29 +01:00
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|
|
int vlc_loaddir( DIR *dir, char ***namelist,
|
2008-10-23 17:07:13 +02:00
|
|
|
int (*select)( const char * ),
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|
|
|
int (*compar)( const char **, const char ** ) )
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|
|
|
{
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|
|
if( select == NULL )
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|
select = dummy_select;
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|
if( dir == NULL )
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|
|
return -1;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char **tab = NULL;
|
|
|
|
char *entry;
|
|
|
|
unsigned num = 0;
|
|
|
|
|
|
|
|
rewinddir( dir );
|
|
|
|
|
2010-02-07 14:25:29 +01:00
|
|
|
while( ( entry = vlc_readdir( dir ) ) != NULL )
|
2008-10-23 17:07:13 +02:00
|
|
|
{
|
|
|
|
char **newtab;
|
|
|
|
|
|
|
|
if( !select( entry ) )
|
|
|
|
{
|
|
|
|
free( entry );
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
newtab = realloc( tab, sizeof( char * ) * (num + 1) );
|
|
|
|
if( newtab == NULL )
|
|
|
|
{
|
|
|
|
free( entry );
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
tab = newtab;
|
|
|
|
tab[num++] = entry;
|
|
|
|
}
|
|
|
|
|
|
|
|
if( compar != NULL )
|
|
|
|
qsort( tab, num, sizeof( tab[0] ),
|
|
|
|
(int (*)( const void *, const void *))compar );
|
|
|
|
|
|
|
|
*namelist = tab;
|
|
|
|
return num;
|
|
|
|
|
|
|
|
error:{
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
for( i = 0; i < num; i++ )
|
|
|
|
free( tab[i] );
|
2009-07-16 08:37:42 +02:00
|
|
|
free( tab );
|
2008-10-23 17:07:13 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Selects file entries from a directory, as GNU C scandir().
|
|
|
|
*
|
|
|
|
* @param dirname UTF-8 diretory path
|
|
|
|
* @param pointer [OUT] pointer set, on succesful completion, to the address
|
|
|
|
* of a table of UTF-8 filenames. All filenames must be freed with free().
|
|
|
|
* The table itself must be freed with free() as well.
|
|
|
|
*
|
|
|
|
* @return How many file names were selected (possibly 0),
|
|
|
|
* or -1 in case of error.
|
|
|
|
*/
|
2010-02-07 14:25:29 +01:00
|
|
|
int vlc_scandir( const char *dirname, char ***namelist,
|
2008-10-23 17:07:13 +02:00
|
|
|
int (*select)( const char * ),
|
|
|
|
int (*compar)( const char **, const char ** ) )
|
|
|
|
{
|
2010-02-07 14:25:29 +01:00
|
|
|
DIR *dir = vlc_opendir (dirname);
|
2008-10-23 17:07:13 +02:00
|
|
|
int val = -1;
|
|
|
|
|
|
|
|
if (dir != NULL)
|
|
|
|
{
|
2010-02-07 14:25:29 +01:00
|
|
|
val = vlc_loaddir (dir, namelist, select, compar);
|
2008-10-23 17:07:13 +02:00
|
|
|
closedir (dir);
|
|
|
|
}
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2010-02-07 14:25:29 +01:00
|
|
|
static int vlc_statEx( const char *filename, struct stat *buf,
|
2008-10-23 17:07:13 +02:00
|
|
|
bool deref )
|
|
|
|
{
|
|
|
|
#ifdef UNDER_CE
|
|
|
|
/*_stat translates to wchar internally on WinCE*/
|
|
|
|
return _stat( filename, buf );
|
|
|
|
#elif defined (WIN32)
|
2008-10-23 17:27:30 +02:00
|
|
|
CONVERT_PATH (filename, wpath, -1);
|
|
|
|
return _wstati64 (wpath, buf);
|
2008-10-23 17:07:13 +02:00
|
|
|
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_STAT_H
|
|
|
|
const char *local_name = ToLocale( filename );
|
|
|
|
|
|
|
|
if( local_name != NULL )
|
|
|
|
{
|
|
|
|
int res = deref ? stat( local_name, buf )
|
|
|
|
: lstat( local_name, buf );
|
|
|
|
LocaleFree( local_name );
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
errno = ENOENT;
|
|
|
|
#endif
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Finds file/inode informations, as stat().
|
|
|
|
* Consider using fstat() instead, if possible.
|
|
|
|
*
|
|
|
|
* @param filename UTF-8 file path
|
|
|
|
*/
|
2010-02-07 14:25:29 +01:00
|
|
|
int vlc_stat( const char *filename, struct stat *buf)
|
2008-10-23 17:07:13 +02:00
|
|
|
{
|
2010-02-07 14:25:29 +01:00
|
|
|
return vlc_statEx( filename, buf, true );
|
2008-10-23 17:07:13 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Finds file/inode informations, as lstat().
|
|
|
|
* Consider using fstat() instead, if possible.
|
|
|
|
*
|
|
|
|
* @param filename UTF-8 file path
|
|
|
|
*/
|
2010-03-03 22:32:21 +01:00
|
|
|
int vlc_lstat( const char *filename, struct stat *buf)
|
2008-10-23 17:07:13 +02:00
|
|
|
{
|
2010-02-07 14:25:29 +01:00
|
|
|
return vlc_statEx( filename, buf, false );
|
2008-10-23 17:07:13 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Removes a file.
|
|
|
|
*
|
|
|
|
* @param filename a UTF-8 string with the name of the file you want to delete.
|
|
|
|
* @return A 0 return value indicates success. A -1 return value indicates an
|
|
|
|
* error, and an error code is stored in errno
|
|
|
|
*/
|
2010-02-07 14:25:29 +01:00
|
|
|
int vlc_unlink( const char *filename )
|
2008-10-23 17:07:13 +02:00
|
|
|
{
|
|
|
|
#ifdef UNDER_CE
|
|
|
|
/*_open translates to wchar internally on WinCE*/
|
|
|
|
return _unlink( filename );
|
|
|
|
#elif defined (WIN32)
|
2008-10-23 17:27:30 +02:00
|
|
|
CONVERT_PATH (filename, wpath, -1);
|
|
|
|
return _wunlink (wpath);
|
2008-10-23 17:07:13 +02:00
|
|
|
|
|
|
|
#endif
|
|
|
|
const char *local_name = ToLocale( filename );
|
|
|
|
|
|
|
|
if( local_name == NULL )
|
|
|
|
{
|
|
|
|
errno = ENOENT;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ret = unlink( local_name );
|
|
|
|
LocaleFree( local_name );
|
|
|
|
return ret;
|
|
|
|
}
|
2008-11-18 00:05:49 +01:00
|
|
|
|
2009-05-07 18:11:15 +02:00
|
|
|
/**
|
|
|
|
* Moves a file atomically. This only works within a single file system.
|
|
|
|
*
|
|
|
|
* @param oldpath path to the file before the move
|
|
|
|
* @param newpath intended path to the file after the move
|
|
|
|
* @return A 0 return value indicates success. A -1 return value indicates an
|
|
|
|
* error, and an error code is stored in errno
|
|
|
|
*/
|
2010-02-07 14:25:29 +01:00
|
|
|
int vlc_rename (const char *oldpath, const char *newpath)
|
2009-05-07 18:11:15 +02:00
|
|
|
{
|
|
|
|
#if defined (WIN32)
|
|
|
|
CONVERT_PATH (oldpath, wold, -1);
|
|
|
|
CONVERT_PATH (newpath, wnew, -1);
|
2009-05-13 16:50:53 +02:00
|
|
|
# ifdef UNDER_CE
|
|
|
|
/* FIXME: errno support */
|
|
|
|
if (MoveFileW (wold, wnew))
|
|
|
|
return 0;
|
|
|
|
else
|
|
|
|
return -1;
|
|
|
|
#else
|
2010-04-16 19:02:06 +02:00
|
|
|
if (_wrename (wold, wnew) && errno == EACCES)
|
|
|
|
{ /* Windows does not allow atomic file replacement */
|
|
|
|
if (_wremove (wnew))
|
|
|
|
{
|
|
|
|
errno = EACCES; /* restore errno */
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (_wrename (wold, wnew))
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return 0;
|
2009-05-13 16:50:53 +02:00
|
|
|
#endif
|
2009-05-07 18:11:15 +02:00
|
|
|
|
|
|
|
#endif
|
|
|
|
const char *lo = ToLocale (oldpath);
|
|
|
|
if (lo == NULL)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
const char *ln = ToLocale (newpath);
|
|
|
|
if (ln == NULL)
|
|
|
|
{
|
|
|
|
LocaleFree (lo);
|
|
|
|
error:
|
|
|
|
errno = ENOENT;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ret = rename (lo, ln);
|
|
|
|
LocaleFree (lo);
|
|
|
|
LocaleFree (ln);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-02-07 14:25:29 +01:00
|
|
|
int vlc_mkstemp( char *template )
|
2008-11-18 00:05:49 +01:00
|
|
|
{
|
|
|
|
static const char digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
|
|
|
static const int i_digits = sizeof(digits)/sizeof(*digits) - 1;
|
|
|
|
|
|
|
|
/* */
|
|
|
|
assert( template );
|
|
|
|
|
|
|
|
/* Check template validity */
|
|
|
|
const size_t i_length = strlen( template );
|
|
|
|
char *psz_rand = &template[i_length-6];
|
|
|
|
|
|
|
|
if( i_length < 6 || strcmp( psz_rand, "XXXXXX" ) )
|
|
|
|
{
|
|
|
|
errno = EINVAL;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* */
|
|
|
|
for( int i = 0; i < 256; i++ )
|
|
|
|
{
|
|
|
|
/* Create a pseudo random file name */
|
2008-11-18 19:05:22 +01:00
|
|
|
uint8_t pi_rand[6];
|
|
|
|
|
|
|
|
vlc_rand_bytes( pi_rand, sizeof(pi_rand) );
|
2008-11-18 00:05:49 +01:00
|
|
|
for( int j = 0; j < 6; j++ )
|
2008-11-18 19:05:22 +01:00
|
|
|
psz_rand[j] = digits[pi_rand[j] % i_digits];
|
2008-11-18 00:05:49 +01:00
|
|
|
|
|
|
|
/* */
|
2010-02-07 14:25:29 +01:00
|
|
|
int fd = vlc_open( template, O_CREAT | O_EXCL | O_RDWR, 0600 );
|
2008-11-18 00:05:49 +01:00
|
|
|
if( fd >= 0 )
|
|
|
|
return fd;
|
|
|
|
if( errno != EEXIST )
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
errno = EEXIST;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2010-02-07 19:11:34 +01:00
|
|
|
#ifdef UNDER_CE
|
|
|
|
# define dup(fd) (fd, -1)
|
|
|
|
#endif
|
|
|
|
|
2010-02-07 14:51:35 +01:00
|
|
|
/**
|
|
|
|
* Duplicates a file descriptor. The new file descriptor has the close-on-exec
|
|
|
|
* descriptor flag set.
|
|
|
|
* @return a new file descriptor or -1
|
|
|
|
*/
|
|
|
|
int vlc_dup (int oldfd)
|
|
|
|
{
|
|
|
|
int newfd;
|
|
|
|
|
|
|
|
#ifdef HAVE_DUP3
|
|
|
|
/* Unfortunately, dup3() works like dup2(), not like plain dup(). So we
|
|
|
|
* need such contortion to find the new file descriptor while preserving
|
|
|
|
* thread safety of the file descriptor table. */
|
|
|
|
newfd = vlc_open ("/dev/null", O_RDONLY);
|
|
|
|
if (likely(newfd != -1))
|
|
|
|
{
|
|
|
|
if (likely(dup3 (oldfd, newfd, O_CLOEXEC) == newfd))
|
|
|
|
return newfd;
|
|
|
|
close (newfd);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
newfd = dup (oldfd);
|
|
|
|
#ifdef HAVE_FCNTL
|
|
|
|
if (likely(newfd != -1))
|
|
|
|
fcntl (newfd, F_SETFD, FD_CLOEXEC);
|
|
|
|
#endif
|
|
|
|
return newfd;
|
|
|
|
}
|
2010-03-31 18:07:47 +02:00
|
|
|
|
2010-03-31 22:41:40 +02:00
|
|
|
#include <vlc_network.h>
|
|
|
|
|
2010-03-31 18:07:47 +02:00
|
|
|
/**
|
|
|
|
* Creates a socket file descriptor. The new file descriptor has the
|
|
|
|
* close-on-exec flag set.
|
|
|
|
* @param pf protocol family
|
|
|
|
* @param type socket type
|
|
|
|
* @param proto network protocol
|
|
|
|
* @param nonblock true to create a non-blocking socket
|
|
|
|
* @return a new file descriptor or -1
|
|
|
|
*/
|
|
|
|
int vlc_socket (int pf, int type, int proto, bool nonblock)
|
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
#ifdef SOCK_CLOEXEC
|
|
|
|
type |= SOCK_CLOEXEC;
|
|
|
|
if (nonblock)
|
|
|
|
type |= SOCK_NONBLOCK;
|
2010-04-03 17:30:17 +02:00
|
|
|
fd = socket (pf, type, proto);
|
2010-03-31 18:07:47 +02:00
|
|
|
if (fd != -1 || errno != EINVAL)
|
|
|
|
return fd;
|
|
|
|
|
|
|
|
type &= ~(SOCK_CLOEXEC|SOCK_NONBLOCK);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
fd = socket (pf, type, proto);
|
|
|
|
if (fd == -1)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
#ifndef WIN32
|
|
|
|
fcntl (fd, F_SETFD, FD_CLOEXEC);
|
|
|
|
if (nonblock)
|
|
|
|
fcntl (fd, F_SETFL, fcntl (fd, F_GETFL, 0) | O_NONBLOCK);
|
|
|
|
#else
|
|
|
|
if (nonblock)
|
|
|
|
ioctlsocket (fd, FIONBIO, &(unsigned long){ 1 });
|
|
|
|
#endif
|
|
|
|
return fd;
|
|
|
|
}
|
2010-03-31 18:23:47 +02:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Accepts an inbound connection request on a listening socket.
|
|
|
|
* The new file descriptor has the close-on-exec flag set.
|
|
|
|
* @param lfd listening socket file descriptor
|
|
|
|
* @param addr pointer to the peer address or NULL [OUT]
|
|
|
|
* @param alen pointer to the length of the peer address or NULL [OUT]
|
|
|
|
* @param nonblock whether to put the new socket in non-blocking mode
|
|
|
|
* @return a new file descriptor, or -1 on error.
|
|
|
|
*/
|
|
|
|
int vlc_accept (int lfd, struct sockaddr *addr, socklen_t *alen, bool nonblock)
|
|
|
|
{
|
|
|
|
#ifdef HAVE_ACCEPT4
|
|
|
|
int flags = SOCK_CLOEXEC;
|
|
|
|
if (nonblock)
|
|
|
|
flags |= SOCK_NONBLOCK;
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
int fd = accept4 (lfd, addr, alen, flags);
|
|
|
|
if (fd != -1)
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
while (errno == EINTR);
|
|
|
|
|
|
|
|
if (errno != ENOSYS)
|
|
|
|
return -1;
|
|
|
|
#endif
|
|
|
|
#ifdef WIN32
|
|
|
|
errno = 0;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
int fd = accept (lfd, addr, alen);
|
|
|
|
if (fd != -1)
|
2010-04-03 17:30:17 +02:00
|
|
|
{
|
|
|
|
#ifndef WIN32
|
2010-04-03 18:42:14 +02:00
|
|
|
fcntl (fd, F_SETFD, FD_CLOEXEC);
|
|
|
|
if (nonblock)
|
|
|
|
fcntl (fd, F_SETFL, fcntl (fd, F_GETFL, 0) | O_NONBLOCK);
|
2010-04-03 17:30:17 +02:00
|
|
|
#else
|
2010-04-03 18:42:14 +02:00
|
|
|
if (nonblock)
|
|
|
|
ioctlsocket (fd, FIONBIO, &(unsigned long){ 1 });
|
2010-04-03 17:30:17 +02:00
|
|
|
#endif
|
2010-03-31 18:23:47 +02:00
|
|
|
return fd;
|
2010-04-03 17:30:17 +02:00
|
|
|
}
|
2010-03-31 18:23:47 +02:00
|
|
|
}
|
|
|
|
while (errno == EINTR);
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|