Allow for platforms not support abstract naming for Unix sockets

[exim.git] / src / src / expand.c

diff --git a/src/src/expand.c b/src/src/expand.c
index 427effedf4606b2b5dc28e1767425672501add6c..4af4a3652ce7f18cee9a34674bb096bfd1bbeaa4 100644 (file)
--- a/src/src/expand.c
+++ b/src/src/expand.c
@@ -1755,6 +1755,9 @@ uschar buf[16];
 int fd;
 ssize_t len;
 const uschar * where;
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+uschar * sname;
+#endif
 
 if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
   {
@@ -1762,28 +1765,34 @@ if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
   return NULL;
   }
 
-#define ABSTRACT_CLIENT
-#ifdef ABSTRACT_CLIENT
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
 sun.sun_path[0] = 0;   /* Abstract local socket addr - Linux-specific? */
 len = offsetof(struct sockaddr_un, sun_path) + 1
   + snprintf(sun.sun_path+1, sizeof(sun.sun_path)-1, "exim_%d", getpid());
 #else
+sname = string_sprintf("%s/p_%d", spool_directory, getpid());
 len = offsetof(struct sockaddr_un, sun_path)
-  + snprintf(sun.sun_path, sizeof(sun.sun_path), "%s/p_%d",
-      spool_directory, getpid());
+  + snprintf(sun.sun_path, sizeof(sun.sun_path), "%s", sname);
 #endif
 
 if (bind(fd, (const struct sockaddr *)&sun, len) < 0)
   { where = US"bind"; goto bad; }
 
 #ifdef notdef
-debug_printf("local%s '%s'\n", *sun.sun_path ? "" : " abstract",
-  sun.sun_path+ (*sun.sun_path ? 0 : 1));
+debug_printf("local addr '%s%s'\n",
+  *sun.sun_path ? "" : "@",
+  sun.sun_path + (*sun.sun_path ? 0 : 1));
 #endif
 
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
 sun.sun_path[0] = 0;   /* Abstract local socket addr - Linux-specific? */
 len = offsetof(struct sockaddr_un, sun_path) + 1
   + snprintf(sun.sun_path+1, sizeof(sun.sun_path)-1, "%s", NOTIFIER_SOCKET_NAME);
+#else
+len = offsetof(struct sockaddr_un, sun_path)
+  + snprintf(sun.sun_path, sizeof(sun.sun_path), "%s/%s",
+               spool_directory, NOTIFIER_SOCKET_NAME);
+#endif
 
 if (connect(fd, (const struct sockaddr *)&sun, len) < 0)
   { where = US"connect"; goto bad; }
@@ -1794,6 +1803,9 @@ if (send(fd, buf, 1, 0) < 0) { where = US"send"; goto bad; }
 if ((len = recv(fd, buf, sizeof(buf), 0)) < 0) { where = US"recv"; goto bad; }
 
 close(fd);
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+Uunlink(sname);
+#endif
 return string_copyn(buf, len);
 
 bad: