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From: ernie@aquarium.buffalo.ny.us (Ernest J. Gainey III)
Newsgroups: comp.sys.amiga.programmer
Subject: Question About FileInfoBlock Structures
Keywords: FileInfoBlock directories dos amigados
Message-ID: <18a052ee.ARN02d3@aquarium.buffalo.ny.us>
Date: 4 Feb 91 02:42:54 GMT
Reply-To: ernie@aquarium.buffalo.ny.us
Followup-To: comp.sys.amiga.programmer
Organization: The Aquarium BBS (716)/999-9999
Lines: 116
Expires:

Hello Everyone,

 I'm curious if anyone knows why this little bit of code produces such
 a strange result, from what I can tell, it should do a directory
 listing filename, filesize, and protections...

 Problem is... the fib_Protection field of the FileInfoBlock structure
 is Empty... when I print it as a "%d", i get a 0... all the other fields
 appear to have values... but do a...
  printf("Protection==%d\n",MyFileInfoBlock->fib_Protection);
 and I get a: Protection==0 ...

Here, I'll include my little test program, and show ya... and maybe someone
can figure out whats wrong...

----------------------- Cut Here Please :) --------------------------------
#include <dos.h>
#include <proto/dos.h>
#include <proto/exec.h>
#include <exec/memory.h>

VOID
DisplayFile(struct FileInfoBlock *MyFileInfoBlock)
{
 char Protection[9];
 int x;
 int Prot;

 static char *ProtectionNames[]=
  { "d","e","w","r","a","p","s"};

 bzero(Protection,sizeof(Protection));

 for (x=6; x>=0; x--)
 {
  if (MyFileInfoBlock->fib_Protection && (1<<x))
   {
    Protection[6-x]=*ProtectionNames[x];
   }
    else
   {
    Protection[6-x]='-';
   }
}

 printf("%-20s ",MyFileInfoBlock->fib_FileName);
 if (MyFileInfoBlock->fib_DirEntryType>0)
  {
   printf("%6s ","Dir");
  }
   else
  {
   printf("%6d ",MyFileInfoBlock->fib_Size);
  }
  printf("%s\n",Protection);

}

main(argc,argv)
 int argc;
 char *argv[];
{

  BPTR MyLock;
  struct FileInfoBlock *MyFileInfoBlock;
  int Success;

  if(!(MyFileInfoBlock=AllocMem(sizeof(struct FileInfoBlock),MEMF_PUBLIC)))
   {
    printf("Error Allocating FileInfoBlock\n");
    exit(1);
   }

  if (argc<2)
   {
    MyLock=Lock("",ACCESS_READ);
   }
    else
   {
    MyLock=Lock(argv[1],ACCESS_READ);
   }

   if (MyLock==NULL)
    {
     printf("Error Achieving Lock\n");
     exit(2);
    }

  Success=Examine(MyLock,MyFileInfoBlock);
  if (Success) DisplayFile(MyFileInfoBlock);

  do
   {
    Success=ExNext(MyLock,MyFileInfoBlock);
    if (Success) DisplayFile(MyFileInfoBlock);
  } while (Success);

  UnLock(MyLock);
  FreeMem(MyFileInfoBlock,sizeof(struct FileInfoBlock));

}

------------------ EOF -- Cut Here ----------------------------------------

Heres an example of the output:

work			Dir -------
dir.c		       1443 -------
dir		       6140 -------
test			  0 -------

Thanks all for your help...

Ernest J. Gainey III   Home: ernie@aquarium.buffalo.ny.us        //\\
 The Amiga Aquarium  School:  gainey03@snybufva.bitnet          //==\\
  +1 716 999-9999    Snail :61 Tarkington,Tonawanda,NY 14150 \\//    \\miga!