Originální popis anglicky:
getdtablesize - get descriptor table size
Návod, kniha: Linux Programmer's Manual
#include <unistd.h>
int getdtablesize(void);
getdtablesize returns the maximum number of files a process can have
open, one more than the largest possible value for a file descriptor.
The current limit on the number of open files per process.
getdtablesize is implemented as a libc library function. The glibc
version calls
getrlimit(2) and returns the current
RLIMIT_NOFILE
limit, or
OPEN_MAX when that fails. The libc4 and libc5 versions return
OPEN_MAX (set to 256 since Linux 0.98.4).
SVr4, 4.4BSD (the
getdtablesize function first appeared in BSD 4.2).
close(2),
dup(2),
getrlimit(2),
open(2)
