d72b24a2fe
Handle EAGAIN and EWOULDBLOCK more gracefully when dealing with safe_read(). All occurrences of safe_read() should only be invoked on fds that have signaled ready-to-read state via the epoll() mechanism, so this change should not result in any observable difference, but it is best to be safe. Additionally, a constant stack variable is converted to an equivalent macro define for cleanliness. Finally, print the error type encountered if reading data from an ARP response fails with a read error.
35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
/* netlink.h - netlink physical link notification handling and info retrieval
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*
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* (c) 2011 Nicholas J. Kain <njkain at gmail dot com>
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* (c) 2006-2007 Stefan Rompf <sux@loplof.de>
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*
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* This code was largely taken from Stefan Rompf's dhcpclient.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef NK_NETLINK_H_
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#define NK_NETLINK_H_
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#include "config.h"
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int nl_open(struct client_state_t *cs);
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void nl_close(struct client_state_t *cs);
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void nl_queryifstatus(int ifidx, struct client_state_t *cs);
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void handle_nl_message(struct client_state_t *cs);
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int nl_getifdata(const char *ifname, struct client_state_t *cs);
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#endif /* NK_NETLINK_H_ */
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