using a filepointer in a diffrent program Post: 99169

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getdtablesize

getdtablesize(2)						System Calls Manual						  getdtablesize(2)

NAME

       getdtablesize() - get the size of the per-process file descriptor table

SYNOPSIS


DESCRIPTION

       The function returns the maximum number of file descriptors that can currently be stored in a process' file descriptor table.  This maximum
       number is also known as the soft limit for open files, and can be adjusted up to the hard limit by calling The entries  in  the	descriptor
       table are numbered with small integers starting at 0 (zero).

       The  function  returns the total number of file descriptors that a process can have open simultaneously.  Each process is limited to a cur-
       rent maximum (soft limit) and a fixed upper bound (hard limit) of open file descriptors.  This limit is at least  32.   The  system-defined
       limits  are configurable.  See the descriptions of the and kernel parameters in maxfiles_lim(5) and maxfiles(5), respectively, for informa-
       tion about changing the system-defined, per-process limit on open file descriptors.

RETURN VALUES

       The function returns the size of the descriptor table (soft limit), and is always successful.

SEE ALSO

       close(2), getrlimit(2), open(2), select(2), setrlimit(2), sysconf(2), maxfiles(5), maxfiles_lim(5).

STANDARDS CONFORMANCE

																  getdtablesize(2)