NAME

       nflog_open, nflog_close, nflog_bind_pf, nflog_unbind_pf - LibrarySetup

SYNOPSIS

       #include <netinet/in.h>
       #include <libnetfilter_log/libnetfilter_log.h>

       struct nflog_handle * nflog_open (void)
       int nflog_close (struct nflog_handle *h)
       int nflog_bind_pf (struct nflog_handle *h, uint16_t pf)
       int nflog_unbind_pf (struct nflog_handle *h, uint16_t pf)

Detailed Description

       When the program has finished with libnetfilter_log, it has to call the nflog_close()
       function to release all associated resources.

Function Documentation

   int nflog_bind_pf (struct nflog_handle * h, uint16_t pf)
       nflog_bind_pf - bind a nflog handler to a given protocol family

       Parameters
           h Netfilter log handle obtained via call to nflog_open()
           pf protocol family to bind to nflog handler obtained from nflog_open()

       Binds the given log connection handle to process packets belonging to the given protocol
       family (ie. PF_INET, PF_INET6, etc).

       Returns
           0 on success, -1 on failure with errno set.

       Errors
           EOPNOTSUPP Not running as root

       Definition at line 420 of file libnetfilter_log.c.

   int nflog_close (struct nflog_handle * h)
       nflog_close - close a nflog handler

       Parameters
           h Netfilter log handle obtained via call to nflog_open()

       This function closes the nflog handler and free associated resources.

       Returns
           0 on success, -1 on failure with errno set.

       Errors
           as for close(2)

       Definition at line 401 of file libnetfilter_log.c.

   struct nflog_handle * nflog_open (void)
       nflog_open - open a nflog handler

       This function obtains a netfilter log connection handle. When you are finished with the
       handle returned by this function, you should destroy it by calling nflog_close(). A new
       netlink connection is obtained internally and associated with the log connection handle
       returned.

       Returns
           a pointer to a new log handle or NULL on failure with errno set.

       Errors
           from underlying calls, in exceptional circumstances

       Definition at line 304 of file libnetfilter_log.c.

   int nflog_unbind_pf (struct nflog_handle * h, uint16_t pf)
       nflog_unbind_pf - unbind nflog handler from a protocol family

       Parameters
           h Netfilter log handle obtained via call to nflog_open()
           pf protocol family to unbind family from

       Unbinds the given nflog handle from processing packets belonging to the given protocol
       family.

       Returns
           0 on success, -1 on failure with errno set.

       Errors
           EOPNOTSUPP Not running as root

       Definition at line 437 of file libnetfilter_log.c.

Author

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