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New memory functions and force dup function added.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@164
This commit is contained in:
Sjoerd van der Berg 2002-08-19 12:46:12 +00:00
parent 31cb583329
commit 151246d909
1 changed files with 35 additions and 8 deletions
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43
src/dos/dos_files.cpp
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@ -135,14 +135,14 @@ bool DOS_MakeName(char * name,char * fullname,Bit8u * drive) {
return true;
}
bool DOS_GetCurrentDir(Bit8u drive,Bit8u * buffer) {
bool DOS_GetCurrentDir(Bit8u drive,char * buffer) {
if (drive==0) drive=DOS_GetDefaultDrive();
else drive--;
if ((drive>DOS_DRIVES) || (!Drives[drive])) {
DOS_SetError(DOSERR_INVALID_DRIVE);
return false;
}
strcpy((char *) buffer,Drives[drive]->curdir);
strcpy(buffer,Drives[drive]->curdir);
return true;
}
@ -267,7 +267,7 @@ bool DOS_CloseFile(Bit16u entry) {
};
//TODO Figure this out with devices :)
PSP * psp=(PSP *)real_off(dos.psp,0);
PSP * psp=(PSP *)HostMake(dos.psp,0);
Bit8u * table=Real2Host(psp->file_table);
table[entry]=0xFF;
/* Devices won't allow themselves to be closed or killed */
@ -280,7 +280,7 @@ bool DOS_CloseFile(Bit16u entry) {
bool DOS_CreateFile(char * name,Bit16u attributes,Bit16u * entry) {
char fullname[DOS_PATHLENGTH];Bit8u drive;
PSP * psp=(PSP *)real_off(dos.psp,0);
PSP * psp=(PSP *)HostMake(dos.psp,0);
if (!DOS_MakeName(name,fullname,&drive)) return false;
/* Check for a free file handle */
Bit8u handle=DOS_FILES;Bit8u i;
@ -318,7 +318,7 @@ bool DOS_CreateFile(char * name,Bit16u attributes,Bit16u * entry) {
bool DOS_OpenFile(char * name,Bit8u flags,Bit16u * entry) {
/* First check for devices */
PSP * psp=(PSP *)real_off(dos.psp,0);
PSP * psp=(PSP *)HostMake(dos.psp,0);
Bit8u handle=DOS_FindDevice((char *)name);
bool device=false;char fullname[DOS_PATHLENGTH];Bit8u drive;Bit8u i;
if (handle!=255) {
@ -379,7 +379,7 @@ bool DOS_GetFileAttr(char * name,Bit16u * attr) {
}
}
bool DOS_Canonicalize(char * name,Bit8u * big) {
bool DOS_Canonicalize(char * name,char * big) {
//TODO Add Better support for devices and shit but will it be needed i doubt it :)
Bit8u drive;
char fullname[DOS_PATHLENGTH];
@ -387,7 +387,7 @@ bool DOS_Canonicalize(char * name,Bit8u * big) {
big[0]=drive+'A';
big[1]=':';
big[2]='\\';
strcpy((char *)&big[3],fullname);
strcpy(&big[3],fullname);
return true;
};
@ -411,7 +411,7 @@ bool DOS_DuplicateEntry(Bit16u entry,Bit16u * newentry) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
PSP * psp=(PSP *)real_off(dos.psp,0);
PSP * psp=(PSP *)HostMake(dos.psp,0);
Bit8u * table=Real2Host(psp->file_table);
*newentry=0xff;
for (Bit16u i=0;i<psp->max_files;i++) {
@ -428,6 +428,32 @@ bool DOS_DuplicateEntry(Bit16u entry,Bit16u * newentry) {
return true;
};
bool DOS_ForceDuplicateEntry(Bit16u entry,Bit16u newentry) {
Bit8u orig=RealHandle(entry);
if (orig>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[orig]) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
Bit8u newone=RealHandle(newentry);
if (newone>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (Files[newone]) {
DOS_CloseFile(newentry);
return false;
};
PSP * psp=(PSP *)HostMake(dos.psp,0);
Bit8u * table=Real2Host(psp->file_table);
table[newentry]=(Bit8u)entry;
return true;
};
bool DOS_CreateTempFile(char * name,Bit16u * entry) {
@ -448,6 +474,7 @@ bool DOS_CreateTempFile(char * name,Bit16u * entry) {
} while (!DOS_CreateFile(name,0,entry));
return true;
}
#if 1
static bool FCB_MakeName (DOS_FCB* fcb, char* outname, Bit8u* outdrive){
char naam[15];