oracular (2) getdtablesize.2freebsd.gz

NAME

     getdtablesize — get file descriptor limit

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     int
     getdtablesize(void);

DESCRIPTION

     The getdtablesize() system call returns the maximum number of file descriptors that the current process may
     open.  The maximum file descriptor number that the system may assign is the return value minus one.
     Existing file descriptor numbers may be higher if the limit was lowered after they were opened.

SEE ALSO

     close(2), closefrom(2), dup(2), getrlimit(2), sysconf(3)

HISTORY

     The getdtablesize() system call appeared in 4.2BSD.