130 lines
2.3 KiB
C
130 lines
2.3 KiB
C
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/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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bootini.c
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Abstract:
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Routines relating to boot.ini.
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Author:
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Ted Miller (tedm) 4-Apr-1995
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Revision History:
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--*/
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#include "setupp.h"
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#pragma hdrstop
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BOOL
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ChangeBootTimeoutBootIni(
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IN UINT Timeout
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)
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/*++
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Routine Description:
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Changes the boot countdown value in boot.ini.
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Arguments:
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Timeout - supplies new timeout value, in seconds.
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Return Value:
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None.
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--*/
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{
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HFILE hfile;
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ULONG FileSize;
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PUCHAR buf = NULL,p1,p2;
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BOOL b;
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CHAR TimeoutLine[256];
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CHAR szBootIni[] = "?:\\BOOT.INI";
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szBootIni[0] = (CHAR)x86SystemPartitionDrive;
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wsprintfA(TimeoutLine,"timeout=%u\r\n",Timeout);
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//
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// Open and read boot.ini.
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//
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b = FALSE;
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hfile = _lopen(szBootIni,OF_READ);
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if(hfile != HFILE_ERROR) {
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FileSize = _llseek(hfile,0,2);
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if(FileSize != (ULONG)(-1)) {
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if((_llseek(hfile,0,0) != -1)
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&& (buf = MyMalloc(FileSize+1))
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&& (_lread(hfile,buf,FileSize) != (UINT)(-1)))
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{
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buf[FileSize] = 0;
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b = TRUE;
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}
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}
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_lclose(hfile);
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}
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if(!b) {
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if(buf) {
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MyFree(buf);
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}
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return(FALSE);
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}
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if(!(p1 = strstr(buf,"timeout"))) {
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MyFree(buf);
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return(FALSE);
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}
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if(p2 = strchr(p1,'\n')) {
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p2++; // skip NL.
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} else {
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p2 = buf + FileSize;
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}
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SetFileAttributesA(szBootIni,FILE_ATTRIBUTE_NORMAL);
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hfile = _lcreat(szBootIni,0);
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if(hfile == HFILE_ERROR) {
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MyFree(buf);
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return(FALSE);
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}
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//
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// Write:
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//
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// 1) the first part, start=buf, len=p1-buf
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// 2) the timeout line
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// 3) the last part, start=p2, len=buf+FileSize-p2
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//
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b = ((_lwrite(hfile, buf, (UINT)(p1 - buf)) != (UINT)(-1))
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&& (_lwrite(hfile, TimeoutLine,strlen(TimeoutLine)) != (UINT)(-1))
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&& (_lwrite(hfile, p2, (UINT)(buf + FileSize - p2)) != (UINT)(-1)));
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_lclose(hfile);
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MyFree(buf);
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//
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// Make boot.ini archive, read only, and system.
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//
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SetFileAttributesA(
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szBootIni,
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FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_HIDDEN);
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return(b);
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}
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