[mpich-commits] [mpich] MPICH primary repository branch, master, updated. v3.1rc3-10-g784c271

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http://git.mpich.org/mpich.git/commitdiff/784c271295a44783488fc773ca7e1a0b80386067

commit 784c271295a44783488fc773ca7e1a0b80386067
Author: Pavan Balaji <balaji at mcs.anl.gov>
Date:   Thu Feb 6 22:07:00 2014 -0600

    Improve localhost detection.
    
    When compiled with strict we completely disable local host detection.
    In the case where no host is specified, we use the local host name
    that we get using gethostname.  However, when we try to detect if that
    is the local host, we do not even attempt to do a simple gethostname
    check.
    
    Thanks to Orion Poplawski <orion at cora.nwra.com> for reporting the
    problem and a detailed analysis of the issue.
    
    Signed-off-by: Wesley Bland <wbland at mcs.anl.gov>

diff --git a/src/pm/hydra/utils/sock/sock.c b/src/pm/hydra/utils/sock/sock.c
index 56cd7c7..1a282cb 100644
--- a/src/pm/hydra/utils/sock/sock.c
+++ b/src/pm/hydra/utils/sock/sock.c
@@ -608,9 +608,23 @@ HYD_status HYDU_sock_is_local(char *host, int *is_local)
 #else
 HYD_status HYDU_sock_is_local(char *host, int *is_local)
 {
+    char lhost[MAX_HOSTNAME_LEN];
+    HYD_status status = HYD_SUCCESS;
+
     *is_local = 0;
 
-    return HYD_SUCCESS;
+    if (gethostname(lhost, MAX_HOSTNAME_LEN) < 0) {
+        HYDU_ERR_SETANDJUMP(status, HYD_INTERNAL_ERROR, "gethostname returned an error\n");
+    }
+    else if (!strcmp(lhost, host)) {
+        *is_local = 1;
+    }
+
+  fn_exit:
+    return status;
+
+  fn_fail:
+    goto fn_exit;
 }
 #endif /* HAVE_GETIFADDRS && HAVE_INET_NTOP */
 

-----------------------------------------------------------------------

Summary of changes:
 src/pm/hydra/utils/sock/sock.c |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)


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