mirror of
https://github.com/php/php-src.git
synced 2024-11-23 18:04:36 +08:00
2d94ee5f20
`.nFileIndexHigh` is a unsigned 32bit number. Casting that to `__int64` and shifting left by 32bits triggers undefined behavior if the most significant bit of `.nFileIndexHigh` is set. We could avoid that by casting to `(__uint64)`, but in that case the whole clause doesn't have an effect anymore, so we drop it altogether. Closes GH-9958.
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
|
|
+----------------------------------------------------------------------+
|
|
| Copyright (c) The PHP Group |
|
|
+----------------------------------------------------------------------+
|
|
| This source file is subject to version 3.01 of the PHP license, |
|
|
| that is bundled with this package in the file LICENSE, and is |
|
|
| available through the world-wide-web at the following url: |
|
|
| https://www.php.net/license/3_01.txt |
|
|
| If you did not receive a copy of the PHP license and are unable to |
|
|
| obtain it through the world-wide-web, please send a note to |
|
|
| license@php.net so we can mail you a copy immediately. |
|
|
+----------------------------------------------------------------------+
|
|
| Author: Anatol Belski <ab@php.net> |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
#include "php.h"
|
|
#include "ipc.h"
|
|
|
|
#include <windows.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "ioutil.h"
|
|
|
|
PHP_WIN32_IPC_API key_t
|
|
ftok(const char *pathname, int proj_id)
|
|
{/*{{{*/
|
|
HANDLE fh;
|
|
struct _stat st;
|
|
BY_HANDLE_FILE_INFORMATION bhfi;
|
|
key_t ret;
|
|
PHP_WIN32_IOUTIL_INIT_W(pathname)
|
|
|
|
if (!pathw) {
|
|
return (key_t)-1;
|
|
}
|
|
|
|
if (_wstat(pathw, &st) < 0) {
|
|
PHP_WIN32_IOUTIL_CLEANUP_W()
|
|
return (key_t)-1;
|
|
}
|
|
|
|
if ((fh = CreateFileW(pathw, FILE_GENERIC_READ, PHP_WIN32_IOUTIL_DEFAULT_SHARE_MODE, 0, OPEN_EXISTING, 0, 0)) == INVALID_HANDLE_VALUE) {
|
|
PHP_WIN32_IOUTIL_CLEANUP_W()
|
|
return (key_t)-1;
|
|
}
|
|
|
|
if (!GetFileInformationByHandle(fh, &bhfi)) {
|
|
PHP_WIN32_IOUTIL_CLEANUP_W()
|
|
CloseHandle(fh);
|
|
return (key_t)-1;
|
|
}
|
|
|
|
ret = (key_t) ((proj_id & 0xff) << 24 | (st.st_dev & 0xff) << 16 | (bhfi.nFileIndexLow & 0xffff));
|
|
|
|
CloseHandle(fh);
|
|
PHP_WIN32_IOUTIL_CLEANUP_W()
|
|
|
|
return ret;
|
|
}/*}}}*/
|