#include <stdio.h>
#include <errno.h>
+#include <string.h>
#include <sys/socket.h>
#include <sys/select.h>
nladdr.nl_pid = getpid();
nladdr.nl_groups = 0xffffffff;
- if ((mSock = socket(PF_NETLINK,
- SOCK_DGRAM,NETLINK_KOBJECT_UEVENT)) < 0) {
+ if ((mSock = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC,
+ NETLINK_KOBJECT_UEVENT)) < 0) {
SLOGE("Unable to create uevent socket: %s", strerror(errno));
return -1;
}
- if (setsockopt(mSock, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)) < 0) {
- SLOGE("Unable to set uevent socket SO_RCVBUFFORCE option: %s", strerror(errno));
- return -1;
+ // When running in a net/user namespace, SO_RCVBUFFORCE is not available.
+ // Try using SO_RCVBUF first.
+ if ((setsockopt(mSock, SOL_SOCKET, SO_RCVBUF, &sz, sizeof(sz)) < 0) &&
+ (setsockopt(mSock, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)) < 0)) {
+ SLOGE("Unable to set uevent socket SO_RCVBUF/SO_RCVBUFFORCE option: %s", strerror(errno));
+ goto out;
}
if (setsockopt(mSock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) {
SLOGE("Unable to set uevent socket SO_PASSCRED option: %s", strerror(errno));
- return -1;
+ goto out;
}
if (bind(mSock, (struct sockaddr *) &nladdr, sizeof(nladdr)) < 0) {
SLOGE("Unable to bind uevent socket: %s", strerror(errno));
- return -1;
+ goto out;
}
mHandler = new NetlinkHandler(mSock);
if (mHandler->start()) {
SLOGE("Unable to start NetlinkHandler: %s", strerror(errno));
- return -1;
+ goto out;
}
+
return 0;
+
+out:
+ close(mSock);
+ return -1;
}
int NetlinkManager::stop() {
+ int status = 0;
+
if (mHandler->stop()) {
SLOGE("Unable to stop NetlinkHandler: %s", strerror(errno));
- return -1;
+ status = -1;
}
delete mHandler;
mHandler = NULL;
close(mSock);
mSock = -1;
- return 0;
+ return status;
}