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authorHolger Weiß <holger@zedat.fu-berlin.de>2010-11-10 23:03:44 +0100
committerHolger Weiß <holger@zedat.fu-berlin.de>2010-11-17 10:06:38 +0100
commitbcf3b3d0d589666575d9b044d0779be2e40e1762 (patch)
treedf86d361b39d348d3f24ce91762e3af9b78c8fe5 /erts/epmd/src/epmd_int.h
parentf26528bbea0a24674e797a58b97117c1f8cf163f (diff)
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Allow user to specify the IP address epmd binds to
The IP address(es) epmd binds to can now be specified by the user, either via epmd's new "-address" option or (if that's not used) by setting the environment variable ERL_EPMD_ADDRESS. Multiple addresses may be specified using a comma-separated list. If the loopback address is not in this list, it will be added implicitly, so that the daemon can be queried by an interactive epmd process.
Diffstat (limited to 'erts/epmd/src/epmd_int.h')
-rw-r--r--erts/epmd/src/epmd_int.h59
1 files changed, 30 insertions, 29 deletions
diff --git a/erts/epmd/src/epmd_int.h b/erts/epmd/src/epmd_int.h
index c2558d52a1..2a0de4df9c 100644
--- a/erts/epmd/src/epmd_int.h
+++ b/erts/epmd/src/epmd_int.h
@@ -168,42 +168,40 @@
#if defined(HAVE_IN6) && defined(AF_INET6) && defined(EPMD6)
#define EPMD_SOCKADDR_IN sockaddr_in6
-#define FAMILY AF_INET6
-
-#define SET_ADDR_LOOPBACK(addr, af, port) do { \
- memset((char*)&(addr), 0, sizeof(addr)); \
- (addr).sin6_family = (af); \
- (addr).sin6_flowinfo = 0; \
- (addr).sin6_addr = in6addr_loopback; \
- (addr).sin6_port = htons(port); \
+#define EPMD_IN_ADDR in6_addr
+#define EPMD_S_ADDR s6_addr
+#define EPMD_ADDR_LOOPBACK in6addr_loopback.s6_addr
+#define EPMD_ADDR_ANY in6addr_any.s6_addr
+#define FAMILY AF_INET6
+
+#define SET_ADDR(dst, addr, port) do { \
+ memset((char*)&(dst), 0, sizeof(dst)); \
+ memcpy((char*)&(dst).sin6_addr.s6_addr, (char*)&(addr), 16); \
+ (dst).sin6_family = AF_INET6; \
+ (dst).sin6_flowinfo = 0; \
+ (dst).sin6_port = htons(port); \
} while(0)
-#define SET_ADDR_ANY(addr, af, port) do { \
- memset((char*)&(addr), 0, sizeof(addr)); \
- (addr).sin6_family = (af); \
- (addr).sin6_flowinfo = 0; \
- (addr).sin6_addr = in6addr_any; \
- (addr).sin6_port = htons(port); \
- } while(0)
+#define IS_ADDR_LOOPBACK(addr) \
+ (memcmp((addr).s6_addr, in6addr_loopback.s6_addr, 16) == 0)
#else /* Not IP v6 */
#define EPMD_SOCKADDR_IN sockaddr_in
-#define FAMILY AF_INET
-
-#define SET_ADDR_LOOPBACK(addr, af, port) do { \
- memset((char*)&(addr), 0, sizeof(addr)); \
- (addr).sin_family = (af); \
- (addr).sin_addr.s_addr = htonl(INADDR_LOOPBACK); \
- (addr).sin_port = htons(port); \
+#define EPMD_IN_ADDR in_addr
+#define EPMD_S_ADDR s_addr
+#define EPMD_ADDR_LOOPBACK htonl(INADDR_LOOPBACK)
+#define EPMD_ADDR_ANY htonl(INADDR_ANY)
+#define FAMILY AF_INET
+
+#define SET_ADDR(dst, addr, port) do { \
+ memset((char*)&(dst), 0, sizeof(dst)); \
+ (dst).sin_family = AF_INET; \
+ (dst).sin_addr.s_addr = (addr); \
+ (dst).sin_port = htons(port); \
} while(0)
-#define SET_ADDR_ANY(addr, af, port) do { \
- memset((char*)&(addr), 0, sizeof(addr)); \
- (addr).sin_family = (af); \
- (addr).sin_addr.s_addr = htonl(INADDR_ANY); \
- (addr).sin_port = htons(port); \
- } while(0)
+#define IS_ADDR_LOOPBACK(addr) ((addr).s_addr == htonl(INADDR_LOOPBACK))
#endif /* Not IP v6 */
@@ -231,6 +229,8 @@
/* Maximum length of a node name == atom name */
#define MAXSYMLEN 255
+#define MAX_LISTEN_SOCKETS 16
+
#define INBUF_SIZE 1024
#define OUTBUF_SIZE 1024
@@ -299,7 +299,8 @@ typedef struct {
Connection *conn;
Nodes nodes;
fd_set orig_read_mask;
- int listenfd;
+ int listenfd[MAX_LISTEN_SOCKETS];
+ char *addresses;
char **argv;
} EpmdVars;