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{
This file is part of the Free Pascal run time library.
Main OS dependant body of the system unit, loosely modelled
after POSIX. *BSD version (Linux version is near identical)
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
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.
**********************************************************************}
{*****************************************************************************
Directory Handling
*****************************************************************************}
const
{ read/write search permission for everyone }
MODE_MKDIR = S_IWUSR OR S_IRUSR OR
S_IWGRP OR S_IRGRP OR
S_IWOTH OR S_IROTH OR
S_IXUSR OR S_IXGRP OR S_IXOTH;
Procedure Do_MkDir(s: rawbytestring);
Begin
If Fpmkdir(pchar(s), MODE_MKDIR)<0 Then
Errno2Inoutres
End;
Procedure Do_RmDir(s: rawbytestring);
begin
if (s='.') then
begin
InOutRes := 16;
exit;
end;
If Fprmdir(pchar(S))<0 Then
Errno2Inoutres
End;
Procedure do_ChDir(s: rawbytestring);
Begin
If Fpchdir(pchar(s))<0 Then
Errno2Inoutres;
{ file not exists is path not found under tp7 }
if InOutRes=2 then
InOutRes:=3;
End;
// !! for now we use getcwd, unless we are fpc_use_libc.
// !! the old code is _still needed_ since the syscall sometimes doesn't work
// !! on special filesystems like NFS etc.
// !! In the libc versions, the alt code is already integrated in the libc code.
// !! Also significantly boosted buffersize. This will make failure of the
// !! dos legacy api's better visibile due to cut-off path, instead of "empty"
procedure do_getdir(drivenr : byte;var dir : rawbytestring);
var
buf : array[0..2047] of char;
{$ifndef FPC_USE_LIBC}
cwdinfo : stat;
rootinfo : stat;
thedir,dummy : rawbytestring;
dirstream : pdir;
d : pdirent;
thisdir : stat;
tmp : rawbytestring;
{$endif FPC_USE_LIBC}
begin
dir:='';
if Fpgetcwd(@buf[0],sizeof(buf))<>nil then
begin
dir:=buf;
{ the returned result by the OS is in the DefaultFileSystemCodePage ->
no conversion }
setcodepage(dir,DefaultFileSystemCodePage,false);
end
{$ifndef FPC_USE_LIBC}
else
begin
dummy:='';
{ get root directory information }
tmp := '/'+#0;
if Fpstat(@tmp[1],rootinfo)<0 then
Exit;
repeat
tmp := dummy+'.'+#0;
{ get current directory information }
if Fpstat(@tmp[1],cwdinfo)<0 then
Exit;
tmp:=dummy+'..'+#0;
{ open directory stream }
{ try to find the current inode number of the cwd }
dirstream:=Fpopendir(@tmp[1]);
if dirstream=nil then
exit;
repeat
thedir:='';
d:=Fpreaddir(dirstream);
{ no more entries to read ... }
if not assigned(d) then
break;
tmp:=dummy+'../'+d^.d_name + #0;
if (Fpstat(@tmp[1],thisdir)=0) then
begin
{ found the entry for this directory name }
if (cwdinfo.st_dev=thisdir.st_dev) and (cwdinfo.st_ino=thisdir.st_ino) then
begin
{ are the filenames of type '.' or '..' ? }
{ then do not set the name. }
if (not ((d^.d_name[0]='.') and ((d^.d_name[1]=#0) or
((d^.d_name[1]='.') and (d^.d_name[2]=#0))))) then
{ d^.d_name is an array[0..x] of char -> will be assigned the
ansi code page on conversion to ansistring -> also typecast
'/' to ansistring rather than rawbytestring so code pages match
(will be unconditionally set to DefaultFileSystemCodePage at
the end without conversion) }
thedir:=ansistring('/')+d^.d_name;
end;
end;
until (thedir<>'');
if Fpclosedir(dirstream)<0 then
Exit;
dummy:=dummy+'../';
if ((cwdinfo.st_dev=rootinfo.st_dev) and (cwdinfo.st_ino=rootinfo.st_ino)) then
begin
if thedir='' then
dir:='/'
else
begin
dir:=thedir;
{ try to ensure that "dir" has a refcount of 1, so that setcodepage
doesn't have to create a deep copy }
thedir:='';
end;
{ the returned result by the OS is in the DefaultFileSystemCodePage ->
no conversion }
setcodepage(dir,DefaultFileSystemCodePage,false);
exit;
end;
until false;
end;
{$endif}
end;
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