mirror of
https://github.com/amadvance/snapraid.git
synced 2026-10-26 10:51:54 -04:00
303 lines
6.1 KiB
C
303 lines
6.1 KiB
C
/*
|
|
* Copyright (C) 2011 Andrea Mazzoleni
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __PORTABLE_H
|
|
#define __PORTABLE_H
|
|
|
|
#if HAVE_CONFIG_H
|
|
#include "config.h" /* Use " to include first in the same directory of this file */
|
|
#endif
|
|
|
|
/***************************************************************************/
|
|
/* Config */
|
|
|
|
#ifdef __MINGW32__ /* Specific for MINGW */
|
|
#define __MSVCRT_VERSION__ 0x0601 /* Define the MSVCRT version required */
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
/* Include some standard headers */
|
|
#include <stdio.h>
|
|
#include <stdlib.h> /* On many systems (e.g., Darwin), `stdio.h' is a prerequisite. */
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <fcntl.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <limits.h>
|
|
|
|
#if HAVE_STDINT_H
|
|
#include <stdint.h>
|
|
#endif
|
|
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#if TIME_WITH_SYS_TIME
|
|
#include <sys/time.h>
|
|
#include <time.h>
|
|
#else
|
|
#if HAVE_SYS_TIME_H
|
|
#include <sys/time.h>
|
|
#else
|
|
#include <time.h>
|
|
#endif
|
|
#endif
|
|
|
|
#if HAVE_DIRENT_H
|
|
#include <dirent.h>
|
|
#define NAMLEN(dirent) strlen((dirent)->d_name)
|
|
#else
|
|
#define dirent direct
|
|
#define NAMLEN(dirent) (dirent)->d_namlen
|
|
#if HAVE_SYS_NDIR_H
|
|
#include <sys/ndir.h>
|
|
#endif
|
|
#if HAVE_SYS_DIR_H
|
|
#include <sys/dir.h>
|
|
#endif
|
|
#if HAVE_NDIR_H
|
|
#include <ndir.h>
|
|
#endif
|
|
#endif
|
|
|
|
#if HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#if HAVE_SYS_STAT_H
|
|
#include <sys/stat.h>
|
|
#endif
|
|
|
|
#if HAVE_GETOPT_H
|
|
#include <getopt.h>
|
|
#endif
|
|
|
|
#if HAVE_FNMATCH_H
|
|
#include <fnmatch.h>
|
|
#else
|
|
#include "fnmatch.h"
|
|
#endif
|
|
|
|
#if HAVE_IO_H
|
|
#include <io.h>
|
|
#endif
|
|
|
|
#if HAVE_GETOPT_LONG
|
|
#define SWITCH_GETOPT_LONG(a,b) a
|
|
#else
|
|
#define SWITCH_GETOPT_LONG(a,b) b
|
|
#endif
|
|
|
|
#ifndef O_BINARY
|
|
#define O_BINARY 0
|
|
#endif
|
|
|
|
#ifdef __MINGW32__ /* Specific for MINGW */
|
|
|
|
/* Remap functions and types for 64 bit support */
|
|
#define stat windows_stat
|
|
#define off_t off64_t
|
|
#define lseek lseek64
|
|
#define fstat windows_fstat
|
|
#define HAVE_FTRUNCATE 1
|
|
#define ftruncate windows_ftruncate
|
|
#define HAVE_FSYNC 1
|
|
#define fsync _commit
|
|
#define rename windows_rename
|
|
#define mkdir(a, b) mkdir(a)
|
|
|
|
/**
|
|
* Generic stat information.
|
|
*/
|
|
struct windows_stat {
|
|
uint64_t st_ino;
|
|
uint64_t st_size;
|
|
uint64_t st_mtime;
|
|
uint32_t st_mode;
|
|
};
|
|
|
|
/**
|
|
* Convert Windows info to the Unix stat format.
|
|
*/
|
|
static inline void windows_info2stat(const BY_HANDLE_FILE_INFORMATION* info, struct windows_stat* st)
|
|
{
|
|
/* Convert special attributes to a char device */
|
|
if ((info->dwFileAttributes & (FILE_ATTRIBUTE_DEVICE | FILE_ATTRIBUTE_TEMPORARY | FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_VIRTUAL | FILE_ATTRIBUTE_REPARSE_POINT)) != 0) {
|
|
st->st_mode = S_IFCHR;
|
|
} else if ((info->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
|
|
st->st_mode = S_IFDIR;
|
|
} else {
|
|
st->st_mode = S_IFREG;
|
|
}
|
|
|
|
st->st_size = info->nFileSizeHigh;
|
|
st->st_size <<= 32;
|
|
st->st_size |= info->nFileSizeLow;
|
|
|
|
st->st_mtime = info->ftLastWriteTime.dwHighDateTime;
|
|
st->st_mtime <<= 32;
|
|
st->st_mtime |= info->ftLastWriteTime.dwLowDateTime;
|
|
|
|
/*
|
|
* Convert to unix time
|
|
*
|
|
* How To Convert a UNIX time_t to a Win32 FILETIME or SYSTEMTIME
|
|
* http://support.microsoft.com/kb/167296
|
|
*/
|
|
st->st_mtime = (st->st_mtime - 116444736000000000LL) / 10000000;
|
|
|
|
st->st_ino = info->nFileIndexHigh;
|
|
st->st_ino <<= 32;
|
|
st->st_ino |= info->nFileIndexLow;
|
|
}
|
|
|
|
static inline int windows_fstat(int fd, struct windows_stat* st)
|
|
{
|
|
BY_HANDLE_FILE_INFORMATION info;
|
|
HANDLE h;
|
|
|
|
h = (HANDLE)_get_osfhandle(fd);
|
|
if (h == INVALID_HANDLE_VALUE) {
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
|
|
if (!GetFileInformationByHandle(h, &info)) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
windows_info2stat(&info, st);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int windows_stat(const char* file, struct windows_stat* st)
|
|
{
|
|
BY_HANDLE_FILE_INFORMATION info;
|
|
HANDLE h;
|
|
|
|
h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
|
|
if (h == INVALID_HANDLE_VALUE) {
|
|
DWORD error = GetLastError();
|
|
switch (error) {
|
|
case ERROR_FILE_NOT_FOUND :
|
|
errno = ENOENT;
|
|
break;
|
|
default:
|
|
errno = EIO;
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
if (!GetFileInformationByHandle(h, &info)) {
|
|
CloseHandle(h);
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
windows_info2stat(&info, st);
|
|
|
|
CloseHandle(h);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int windows_ftruncate(int fd, off64_t off)
|
|
{
|
|
HANDLE h;
|
|
LARGE_INTEGER pos;
|
|
|
|
if (fd == -1) {
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
|
|
h = (HANDLE)_get_osfhandle(fd);
|
|
if (h == INVALID_HANDLE_VALUE) {
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
|
|
pos.QuadPart = off;
|
|
if (!SetFilePointerEx(h, pos, 0, FILE_BEGIN)) {
|
|
DWORD error = GetLastError();
|
|
switch (error) {
|
|
case ERROR_INVALID_HANDLE :
|
|
errno = EBADF;
|
|
break;
|
|
default:
|
|
errno = EIO;
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
if (!SetEndOfFile(h)) {
|
|
DWORD error = GetLastError();
|
|
switch (error) {
|
|
case ERROR_INVALID_HANDLE :
|
|
errno = EBADF;
|
|
break;
|
|
case ERROR_ACCESS_DENIED :
|
|
errno = EACCES;
|
|
break;
|
|
default:
|
|
errno = EIO;
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int windows_rename(const char* a, const char* b)
|
|
{
|
|
/*
|
|
* Implements an atomic rename in Windows.
|
|
* Not really atomic at now to support XP.
|
|
*
|
|
* Is an atomic file rename (with overwrite) possible on Windows?
|
|
* http://stackoverflow.com/questions/167414/is-an-atomic-file-rename-with-overwrite-possible-on-windows
|
|
*/
|
|
if (!MoveFileEx(a, b, MOVEFILE_REPLACE_EXISTING)) {
|
|
switch (GetLastError()) {
|
|
case ERROR_ACCESS_DENIED :
|
|
errno = EACCES;
|
|
break;
|
|
case ERROR_FILE_NOT_FOUND :
|
|
errno = ENOENT;
|
|
break;
|
|
default :
|
|
errno = EIO;
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|