// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: fileutl.cc,v 1.8 1998/10/02 04:39:50 jgg Exp $
+// $Id: fileutl.cc,v 1.16 1998/11/27 04:20:52 jgg Exp $
/* ######################################################################
File Utilities
// CopyFile - Buffered copy of a file /*{{{*/
// ---------------------------------------------------------------------
/* The caller is expected to set things so that failure causes erasure */
-bool CopyFile(FileFd From,FileFd To)
+bool CopyFile(FileFd &From,FileFd &To)
{
if (From.IsOpen() == false || To.IsOpen() == false)
return false;
return string(File,Res,Res - File.length());
}
/*}}}*/
+// flNotFile - Strip the file from the directory name /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+string flNotFile(string File)
+{
+ string::size_type Res = File.rfind('/');
+ if (Res == string::npos)
+ return File;
+ Res++;
+ return string(File,0,Res);
+}
+ /*}}}*/
+// SetCloseExec - Set the close on exec flag /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void SetCloseExec(int Fd,bool Close)
+{
+ if (fcntl(Fd,F_SETFD,(Close == false)?0:FD_CLOEXEC) != 0)
+ {
+ cerr << "FATAL -> Could not set close on exec " << strerror(errno) << endl;
+ exit(100);
+ }
+}
+ /*}}}*/
+// SetNonBlock - Set the nonblocking flag /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void SetNonBlock(int Fd,bool Block)
+{
+ int Flags = fcntl(Fd,F_GETFL) & (~O_NONBLOCK);
+ if (fcntl(Fd,F_SETFL,Flags | ((Block == false)?0:O_NONBLOCK)) != 0)
+ {
+ cerr << "FATAL -> Could not set non-blocking flag " << strerror(errno) << endl;
+ exit(100);
+ }
+}
+ /*}}}*/
+// WaitFd - Wait for a FD to become readable /*{{{*/
+// ---------------------------------------------------------------------
+/* This waits for a FD to become readable using select. It is usefull for
+ applications making use of non-blocking sockets. */
+bool WaitFd(int Fd)
+{
+ fd_set Set;
+ FD_ZERO(&Set);
+ FD_SET(Fd,&Set);
+
+ if (select(Fd+1,&Set,0,0,0) <= 0)
+ return false;
+
+ return true;
+}
+ /*}}}*/
// FileFd::FileFd - Open a file /*{{{*/
// ---------------------------------------------------------------------
break;
case WriteEmpty:
- unlink(FileName.c_str());
- iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_EXCL,Perms);
- break;
+ {
+ struct stat Buf;
+ if (stat(FileName.c_str(),&Buf) == 0 && S_ISLNK(Buf.st_mode))
+ unlink(FileName.c_str());
+ iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_TRUNC,Perms);
+ break;
+ }
case WriteExists:
iFd = open(FileName.c_str(),O_RDWR);
case WriteAny:
iFd = open(FileName.c_str(),O_RDWR | O_CREAT,Perms);
- break;
-
- // Dont use this in public directories
- case LockEmpty:
- iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_TRUNC,Perms);
- break;
+ break;
}
if (iFd < 0)
_error->Errno("open","Could not open file %s",FileName.c_str());
else
+ {
this->FileName = FileName;
+ SetCloseExec(iFd,true);
+ }
}
/*}}}*/
// FileFd::~File - Closes the file /*{{{*/
// FileFd::Write - Write to the file /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool FileFd::Write(void *From,unsigned long Size)
+bool FileFd::Write(const void *From,unsigned long Size)
{
if (write(iFd,From,Size) != (signed)Size)
{