X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fsocket.c;h=d57e7701cae642e1e6db007ee142b9d03c6a48bc;hb=9754d56;hp=7c18a2b75c17898676df6b6e7c79b33fe5bbabb6;hpb=5d2abc04fc95f5c5f6d0eaf2f9b06c70d504019f;p=elogind.git

diff --git a/src/core/socket.c b/src/core/socket.c
index 7c18a2b75..d57e7701c 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -663,17 +663,21 @@ static int instance_from_socket(int fd, unsigned nr, char **instance) {
                 int k;
 
                 k = getpeercred(fd, &ucred);
-                if (k < 0)
+                if (k >= 0) {
+                        if (asprintf(&r,
+                                     "%u-"PID_FMT"-"UID_FMT,
+                                     nr, ucred.pid, ucred.uid) < 0)
+                                return -ENOMEM;
+                } else if (k == -ENODATA) {
+                        /* This handles the case where somebody is
+                         * connecting from another pid/uid namespace
+                         * (e.g. from outside of our container). */
+                        if (asprintf(&r,
+                                     "%u-unknown",
+                                     nr) < 0)
+                                return -ENOMEM;
+                } else
                         return k;
-
-                if (asprintf(&r,
-                             "%u-%lu-%lu",
-                             nr,
-                             (unsigned long) ucred.pid,
-                             (unsigned long) ucred.uid) < 0)
-                        return -ENOMEM;
-
-                break;
         }
 
         default: