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https://github.com/servalproject/serval-dna.git
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9cf4d5529a
This consistently handles abstract vs normal sockets with a single switch. overlay mdp tries to have both (abstract & normal) but the code paths seem different, I have consolidated them. Needs more testing.
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*
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Copyright (C) 2012 Daniel O'Connor, Serval Project.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include <stdio.h>
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#include <strings.h>
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#include <sys/errno.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#include <sys/un.h>
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#include <unistd.h>
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#include "conf.h"
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#include "log.h"
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#include "socket.h"
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/* Set the socket name in the abstract namespace for linux or
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* $SERVALINSTANCE_PATH/name for everything else.
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*/
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void
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socket_setname(struct sockaddr_un *sockname, const char *name, socklen_t *len) {
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bzero(sockname, sizeof(*sockname));
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sockname->sun_family = AF_UNIX;
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#ifdef USE_ABSTRACT_NAMESPACE
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sockname->sun_path[0] = 0;
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/* Note: -2 here not -1 because sprintf will put the trailling nul in */
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*len = snprintf(sockname->sun_path + 1, sizeof(sockname->sun_path) - 2, "%s.%s",
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DEFAULT_ABSTRACT_PREFIX, name);
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if (*len > sizeof(sockname->sun_path) - 2)
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FATALF("Socket path too long (%d > %d)", *len, sizeof(sockname->sun_path) - 2);
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/* Doesn't include trailing nul */
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*len = 1 + strlen(sockname->sun_path + 1) + sizeof(sockname->sun_family);
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#else
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*len = snprintf(sockname->sun_path, sizeof(sockname->sun_path) - 1, "%s/%s",
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serval_instancepath(), name);
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if (*len > sizeof(sockname->sun_path) - 1)
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FATALF("Socket path too long (%d > %d)", *len, sizeof(sockname->sun_path) - 1);
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#ifdef SUN_LEN
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*len = SUN_LEN(sockname);
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#else
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/* Includes trailing nul */
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*len = 1 + strlen(sockname->sun_path) + sizeof(sockname->sun_family);
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#endif
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#endif
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}
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