File 2214-erts-esock-Socket-address-dl-size-calculat... of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 2214-erts-esock-Socket-address-dl-size-calculation-on-Ope.patch of Package erlang (Revision e821d375830f7564cfd918f62d383b35)

Currently displaying revision e821d375830f7564cfd918f62d383b35 , Show latest

From 09fcb29b4216db9532ce7d32c45d587fa2d4d665 Mon Sep 17 00:00:00 2001
From: Micael Karlberg <bmk@erlang.org>
Date: Mon, 4 Apr 2022 17:02:09 +0200
Subject: [PATCH 4/5] [erts|esock] Socket address dl size calculation on
 OpenIndiana

On OpenIndiana (Solaris), the sockaddr_dl struct does not contain
a length field.
So in that case we will instead add the 'nlen' and 'alen' fields
to get the length of the 'data' array, and from there calculate
the length of the entire sockaddr_dl.

OTP-18020
---
 erts/emulator/nifs/common/socket_util.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/erts/emulator/nifs/common/socket_util.c b/erts/emulator/nifs/common/socket_util.c
index f4d34dd4db..584eeb02b3 100644
--- a/erts/emulator/nifs/common/socket_util.c
+++ b/erts/emulator/nifs/common/socket_util.c
@@ -535,9 +535,28 @@ void esock_encode_sockaddr(ErlNifEnv*    env,
        *    char    sdl_data[46];   // minimum work area, can be larger;
        *                            // contains both if name and ll address
        * };
+       *
+       * OpenIndiana 2021.10
+       * struct sockaddr_dl {
+       *    ushort_t sdl_family;   // AF_LINK
+       *    ushort_t sdl_index;    // if != 0,
+       *                           // system given index for interface
+       *    uchar_t sdl_type;      // interface type
+       *    uchar_t sdl_nlen;      // interface name length, no trailing 0 reqd
+       *    uchar_t sdl_alen;      // link level address length
+       *    uchar_t sdl_slen;      // link layer selector length
+       *    char    sdl_data[244]; // contains both if name and ll address
+       * };
+       *
        */
-      // len = SALEN(addrLen, sizeof(struct sockaddr_dl));      
+#if defined(ESOCK_SDL_LEN)
       len = SALEN(addrLen, sockAddrP->dl.sdl_len);
+#else
+      // The data area is dlen = nlen + alen
+      len = SALEN(addrLen,
+                  (CHARP(sockAddrP->dl.sdl_data) - CHARP(sockAddrP)) +
+                  sockAddrP->dl.sdl_nlen + sockAddrP->dl.sdl_alen);
+#endif
       esock_encode_sockaddr_dl(env, &sockAddrP->dl, len, eSockAddr);
     break;
 #endif
-- 
2.34.1

Places

File 2214-erts-esock-Socket-address-dl-size-calculation-on-Ope.patch of Package erlang (Revision e821d375830f7564cfd918f62d383b35)

Places