From 228d1c4df21088ffb0f2e087eae8c4323ad05760 Mon Sep 17 00:00:00 2001 From: nbd Date: Mon, 8 Oct 2012 11:24:12 +0000 Subject: move library packages to package/libs/ git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33657 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/libnl-tiny/src/socket.c | 406 ---------------------------------------- 1 file changed, 406 deletions(-) delete mode 100644 package/libnl-tiny/src/socket.c (limited to 'package/libnl-tiny/src/socket.c') diff --git a/package/libnl-tiny/src/socket.c b/package/libnl-tiny/src/socket.c deleted file mode 100644 index 1429825e6..000000000 --- a/package/libnl-tiny/src/socket.c +++ /dev/null @@ -1,406 +0,0 @@ -/* - * lib/socket.c Netlink Socket - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation version 2.1 - * of the License. - * - * Copyright (c) 2003-2008 Thomas Graf - */ - -/** - * @ingroup core - * @defgroup socket Socket - * @{ - */ - -#include -#include -#include -#include -#include -#include - -static uint32_t used_ports_map[32]; - -static uint32_t generate_local_port(void) -{ - int i, n; - uint32_t pid = getpid() & 0x3FFFFF; - - for (i = 0; i < 32; i++) { - if (used_ports_map[i] == 0xFFFFFFFF) - continue; - - for (n = 0; n < 32; n++) { - if (1UL & (used_ports_map[i] >> n)) - continue; - - used_ports_map[i] |= (1UL << n); - n += (i * 32); - - /* PID_MAX_LIMIT is currently at 2^22, leaving 10 bit - * to, i.e. 1024 unique ports per application. */ - return pid + (n << 22); - - } - } - - /* Out of sockets in our own PID namespace, what to do? FIXME */ - return UINT_MAX; -} - -static void release_local_port(uint32_t port) -{ - int nr; - - if (port == UINT_MAX) - return; - - nr = port >> 22; - used_ports_map[nr / 32] &= ~(1 << nr % 32); -} - -/** - * @name Allocation - * @{ - */ - -static struct nl_sock *__alloc_socket(struct nl_cb *cb) -{ - struct nl_sock *sk; - - sk = calloc(1, sizeof(*sk)); - if (!sk) - return NULL; - - sk->s_fd = -1; - sk->s_cb = cb; - sk->s_local.nl_family = AF_NETLINK; - sk->s_peer.nl_family = AF_NETLINK; - sk->s_seq_expect = sk->s_seq_next = time(0); - sk->s_local.nl_pid = generate_local_port(); - if (sk->s_local.nl_pid == UINT_MAX) { - nl_socket_free(sk); - return NULL; - } - - return sk; -} - -/** - * Allocate new netlink socket - * - * @return Newly allocated netlink socket or NULL. - */ -struct nl_sock *nl_socket_alloc(void) -{ - struct nl_cb *cb; - - cb = nl_cb_alloc(NL_CB_DEFAULT); - if (!cb) - return NULL; - - return __alloc_socket(cb); -} - -/** - * Allocate new socket with custom callbacks - * @arg cb Callback handler - * - * The reference to the callback handler is taken into account - * automatically, it is released again upon calling nl_socket_free(). - * - *@return Newly allocted socket handle or NULL. - */ -struct nl_sock *nl_socket_alloc_cb(struct nl_cb *cb) -{ - if (cb == NULL) - BUG(); - - return __alloc_socket(nl_cb_get(cb)); -} - -/** - * Free a netlink socket. - * @arg sk Netlink socket. - */ -void nl_socket_free(struct nl_sock *sk) -{ - if (!sk) - return; - - if (sk->s_fd >= 0) - close(sk->s_fd); - - if (!(sk->s_flags & NL_OWN_PORT)) - release_local_port(sk->s_local.nl_pid); - - nl_cb_put(sk->s_cb); - free(sk); -} - -/** @} */ - -/** - * @name Sequence Numbers - * @{ - */ - -static int noop_seq_check(struct nl_msg *msg, void *arg) -{ - return NL_OK; -} - - -/** - * Disable sequence number checking. - * @arg sk Netlink socket. - * - * Disables checking of sequence numbers on the netlink socket This is - * required to allow messages to be processed which were not requested by - * a preceding request message, e.g. netlink events. - * - * @note This function modifies the NL_CB_SEQ_CHECK configuration in - * the callback handle associated with the socket. - */ -void nl_socket_disable_seq_check(struct nl_sock *sk) -{ - nl_cb_set(sk->s_cb, NL_CB_SEQ_CHECK, - NL_CB_CUSTOM, noop_seq_check, NULL); -} - -/** @} */ - -/** - * Set local port of socket - * @arg sk Netlink socket. - * @arg port Local port identifier - * - * Assigns a local port identifier to the socket. If port is 0 - * a unique port identifier will be generated automatically. - */ -void nl_socket_set_local_port(struct nl_sock *sk, uint32_t port) -{ - if (port == 0) { - port = generate_local_port(); - sk->s_flags &= ~NL_OWN_PORT; - } else { - if (!(sk->s_flags & NL_OWN_PORT)) - release_local_port(sk->s_local.nl_pid); - sk->s_flags |= NL_OWN_PORT; - } - - sk->s_local.nl_pid = port; -} - -/** @} */ - -/** - * @name Group Subscriptions - * @{ - */ - -/** - * Join groups - * @arg sk Netlink socket - * @arg group Group identifier - * - * Joins the specified groups using the modern socket option which - * is available since kernel version 2.6.14. It allows joining an - * almost arbitary number of groups without limitation. The list - * of groups has to be terminated by 0 (%NFNLGRP_NONE). - * - * Make sure to use the correct group definitions as the older - * bitmask definitions for nl_join_groups() are likely to still - * be present for backward compatibility reasons. - * - * @return 0 on sucess or a negative error code. - */ -int nl_socket_add_memberships(struct nl_sock *sk, int group, ...) -{ - int err; - va_list ap; - - if (sk->s_fd == -1) - return -NLE_BAD_SOCK; - - va_start(ap, group); - - while (group != 0) { - if (group < 0) - return -NLE_INVAL; - - err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, - &group, sizeof(group)); - if (err < 0) - return -nl_syserr2nlerr(errno); - - group = va_arg(ap, int); - } - - va_end(ap); - - return 0; -} - -/** - * Leave groups - * @arg sk Netlink socket - * @arg group Group identifier - * - * Leaves the specified groups using the modern socket option - * which is available since kernel version 2.6.14. The list of groups - * has to terminated by 0 (%NFNLGRP_NONE). - * - * @see nl_socket_add_membership - * @return 0 on success or a negative error code. - */ -int nl_socket_drop_memberships(struct nl_sock *sk, int group, ...) -{ - int err; - va_list ap; - - if (sk->s_fd == -1) - return -NLE_BAD_SOCK; - - va_start(ap, group); - - while (group != 0) { - if (group < 0) - return -NLE_INVAL; - - err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_DROP_MEMBERSHIP, - &group, sizeof(group)); - if (err < 0) - return -nl_syserr2nlerr(errno); - - group = va_arg(ap, int); - } - - va_end(ap); - - return 0; -} - - -/** @} */ - -/** - * Set file descriptor of socket to non-blocking state - * @arg sk Netlink socket. - * - * @return 0 on success or a negative error code. - */ -int nl_socket_set_nonblocking(struct nl_sock *sk) -{ - if (sk->s_fd == -1) - return -NLE_BAD_SOCK; - - if (fcntl(sk->s_fd, F_SETFL, O_NONBLOCK) < 0) - return -nl_syserr2nlerr(errno); - - return 0; -} - -/** @} */ - -/** - * @name Utilities - * @{ - */ - -/** - * Set socket buffer size of netlink socket. - * @arg sk Netlink socket. - * @arg rxbuf New receive socket buffer size in bytes. - * @arg txbuf New transmit socket buffer size in bytes. - * - * Sets the socket buffer size of a netlink socket to the specified - * values \c rxbuf and \c txbuf. Providing a value of \c 0 assumes a - * good default value. - * - * @note It is not required to call this function prior to nl_connect(). - * @return 0 on sucess or a negative error code. - */ -int nl_socket_set_buffer_size(struct nl_sock *sk, int rxbuf, int txbuf) -{ - int err; - - if (rxbuf <= 0) - rxbuf = 32768; - - if (txbuf <= 0) - txbuf = 32768; - - if (sk->s_fd == -1) - return -NLE_BAD_SOCK; - - err = setsockopt(sk->s_fd, SOL_SOCKET, SO_SNDBUF, - &txbuf, sizeof(txbuf)); - if (err < 0) - return -nl_syserr2nlerr(errno); - - err = setsockopt(sk->s_fd, SOL_SOCKET, SO_RCVBUF, - &rxbuf, sizeof(rxbuf)); - if (err < 0) - return -nl_syserr2nlerr(errno); - - sk->s_flags |= NL_SOCK_BUFSIZE_SET; - - return 0; -} - -/** - * Enable/disable credential passing on netlink socket. - * @arg sk Netlink socket. - * @arg state New state (0 - disabled, 1 - enabled) - * - * @return 0 on success or a negative error code - */ -int nl_socket_set_passcred(struct nl_sock *sk, int state) -{ - int err; - - if (sk->s_fd == -1) - return -NLE_BAD_SOCK; - - err = setsockopt(sk->s_fd, SOL_SOCKET, SO_PASSCRED, - &state, sizeof(state)); - if (err < 0) - return -nl_syserr2nlerr(errno); - - if (state) - sk->s_flags |= NL_SOCK_PASSCRED; - else - sk->s_flags &= ~NL_SOCK_PASSCRED; - - return 0; -} - -/** - * Enable/disable receival of additional packet information - * @arg sk Netlink socket. - * @arg state New state (0 - disabled, 1 - enabled) - * - * @return 0 on success or a negative error code - */ -int nl_socket_recv_pktinfo(struct nl_sock *sk, int state) -{ - int err; - - if (sk->s_fd == -1) - return -NLE_BAD_SOCK; - - err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_PKTINFO, - &state, sizeof(state)); - if (err < 0) - return -nl_syserr2nlerr(errno); - - return 0; -} - -/** @} */ - -/** @} */ -- cgit v1.2.3