fcntl_setlease(9) [centos man page]

FCNTL_SETLEASE(9)						   The Linux VFS						 FCNTL_SETLEASE(9)

NAME

       fcntl_setlease - sets a lease on an open file

SYNOPSIS

       int fcntl_setlease(unsigned int fd, struct file * filp, long arg);

ARGUMENTS

       fd
	   open file descriptor

       filp
	   file pointer

       arg
	   type of lease to obtain

DESCRIPTION

       Call this fcntl to establish a lease on the file. Note that you also need to call F_SETSIG to receive a signal when the lease is broken.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014							 FCNTL_SETLEASE(9)

auto_parms(1M)															    auto_parms(1M)

NAME

       auto_parms - initial system configuration plus DHCP support command

SYNOPSIS

DESCRIPTION

       The  command is a system initialization command that handles first-boot configuration, that is, the setting of unique system "initial iden-
       tity parameters", and ongoing management of DHCP lease(s).  The command is invoked at boot time by the command.	Initially it loads a  list
       of  available ethernet interfaces and requests a DHCP lease on each interface.  See the rc(1M) manpage for information about for invocation
       context.

       While checking for availability of a lease on each interface, also consults and examines the variable If it is  set  to	"1",  attempts	to
       request a lease on the the interface designated by If is set to "0" (the default case) or is absent from does not attempt a DHCP request on
       that interface.

       Once a lease is secured, the information supplied with the lease is used to initialize key networking parameters; see dhcpdb2conf(1M).

       If detects that the system is undergoing "first-boot" (meaning the system's hostname is not yet set), it invokes to  verify  the  DHCP-sup-
       plied parameters and to collect any parameters not supplied by DHCP.

       For  all  subsequent  boots,  the data supplied by a DHCP lease is assumed by to be correct.  Note that in a (non-mobile) environment where
       DHCP is used for IP address management, under normal conditions the lease information should not change between reboots.   This	is  accom-
       plished by placing in "lease maintenance mode" prior to exiting.

FILES

       The command itself.

       Common subroutines used by
				and sub-area commands.

       Log files written and saved by

       AUTHOR
	      The command was developed by HP.

SEE ALSO

       dhcpdb2conf(1M), rc(1M), set_parms(1M).

																    auto_parms(1M)