Just as a matter of clarification, these calls return some status,
don't they?
int bytes_read=read(fd,buf,count_attempted);
printf("Requested %d bytes, read %d bytes\n",count_attempted,bytes_read);
if (bytes_read<0) {
// do something
}
?
And i think next in line after some simple diagnostics is to fire up gdb.
my 2 cents only.
dan
On Sun, May 5, 2013 at 10:21 AM, JimJoyce <jim@xxxxxxxxxxxxxx> wrote:
> Hi, I learnt and taught C programming many years ago,
> I'm now trying to resurect my skills, and have been using GCC for about a
> month.
> I've had no problems until this weekend.
> I'm failing to read a binary file which I can access quite successfully
> using Editors or Hex-Editors.
> However fread(), read() fscanf() etc. etc return nothing, not even an error
> message.
> I'm beginning to wonder if the file is locked, So am trying to unlock it
> using 'int locking(int,int,long) '
> But GCC fails to find locking.h.
> I've tried #include <locking.h> and #include <sys\locking.h> to no avail.
> I can find locking .h in C:\cygwin\usr\include, BUT is that where GCC looks?
>
> OR can anyone suggest some other reasons why my 'reads' are failingl?
>
> Please - Help me! I'm drowning!
>
> JJ
>
>
>
>
>
> --
> View this message in context: http://gcc.1065356.n5.nabble.com/locking-h-tp935826.html
> Sent from the gcc - Help mailing list archive at Nabble.com.
