getdtablesize - get descriptor table size


SYNOPSIS

       #include <unistd.h>

       int getdtablesize(void);


DESCRIPTION

       getdtablesize  returns  the maximum number of files a pro­
       cess can have open.


NOTES

       getdtablesize is implemented as a library function in  DLL
       4.4.1.   This  function  returns  OPEN_MAX  (set to 256 in
       Linux 2.0.23) if OPEN_MAX was defined when the library was
       compiled.   Otherwise, -1 is returned, and errno is set to
       ENOSYS.


CONFORMING TO

       SVr4, 4.4BSD (the getdtablesize function first appeared in
       BSD 4.2).


SEE ALSO

       close(2), dup(2), open(2)