GETDTABLESIZE
NAME SYNOPSIS DESCRIPTION NOTES CONFORMING TO SEE ALSO
getdtablesize - get descriptor table size
#include
int getdtablesize(void);
getdtablesize returns the maximum number of files a process can have open.
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.
SVr4, 4.4BSD (the getdtablesize function first appeared in BSD 4.2).
One page links to getdtablesize(2):