diff options
| -rw-r--r-- | lib/libc/sys/getdtablesize.2 | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/lib/libc/sys/getdtablesize.2 b/lib/libc/sys/getdtablesize.2 index 916b91e..d52da83 100644 --- a/lib/libc/sys/getdtablesize.2 +++ b/lib/libc/sys/getdtablesize.2 @@ -28,12 +28,12 @@ .\" @(#)getdtablesize.2 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd June 4, 1993 +.Dd April 24, 2013 .Dt GETDTABLESIZE 2 .Os .Sh NAME .Nm getdtablesize -.Nd get descriptor table size +.Nd get file descriptor limit .Sh LIBRARY .Lb libc .Sh SYNOPSIS @@ -41,18 +41,20 @@ .Ft int .Fn getdtablesize void .Sh DESCRIPTION -Each process has a fixed size descriptor table, -which is guaranteed to have at least 20 slots. -The entries in -the descriptor table are numbered with small integers starting at 0. The .Fn getdtablesize -system call returns the size of this table. +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. .Sh SEE ALSO .Xr close 2 , +.Xr closefrom 2 , .Xr dup 2 , -.Xr open 2 , -.Xr select 2 +.Xr getrlimit 2 , +.Xr sysconf 2 .Sh HISTORY The .Fn getdtablesize |
