[Bug network/15339] New: getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[Bug network/15339] New: getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[siddhesh at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15339

             Bug #: 15339
           Summary: getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME
                    when the network is down
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: network
        AssignedTo: siddhesh@redhat.com
        ReportedBy: siddhesh@redhat.com
    Classification: Unclassified


Due to the fix to bug 14719, getaddrinfo incorrectly returns EAI_SYSTEM instead
of EAI_NONAME when the network is down.

Steps to Reproduce:

$ cat t.c
#include <stdio.h>
#include <netdb.h>
int main(void) {
        struct addrinfo *ai;
        int res = getaddrinfo ("example.net", "http", 0, &ai);
        if (res)
                printf("%s: %m\n", gai_strerror(res));
        return res && res != EAI_NONAME;
}

$ gcc -Wall -O2 t.c -o t

$ sudo unshare -n ./t

Actual Result:

System error: Connection refused

Expected Result:

Name or service not known: Connection refused

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[Bug network/15339] getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[siddhesh at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15339

Siddhesh Poyarekar <siddhesh at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

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[Bug network/15339] getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[siddhesh at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15339

Siddhesh Poyarekar <siddhesh at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #1 from Siddhesh Poyarekar <siddhesh at redhat dot com> 2013-05-21 16:26:07 UTC ---
Fixed in master.

commit 3d04f5db20c8f0d1ba3881b5f5373586a18cf188
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Tue May 21 21:54:41 2013 +0530

    Set EAI_SYSTEM only when h_errno is NETDB_INTERNAL

    Fixes BZ #15339.

    NSS_STATUS_UNAVAIL may mean that a necessary input resource is not
    available.  This could occur in a number of cases including when the
    network is down, system runs out of file descriptors, etc.  The
    correct differentiator in such a case is the h_errno, which gives the
    nature of failure.  In case of failures other than a simple 'not
    found', we set h_errno as NETDB_INTERNAL and let errno be the
    identifier for the exact error.

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[Bug network/15339] getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[siddhesh at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15339

Siddhesh Poyarekar <siddhesh at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ludo at gnu dot org

--- Comment #2 from Siddhesh Poyarekar <siddhesh at redhat dot com> ---
*** Bug 15635 has been marked as a duplicate of this bug. ***

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[Bug network/15339] getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[jackie.rosen at hushmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15339

Jackie Rosen <jackie.rosen at hushmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jackie.rosen at hushmail dot com

--- Comment #3 from Jackie Rosen <jackie.rosen at hushmail dot com> ---
*** Bug 260998 has been marked as a duplicate of this bug. ***
Seen from the domain http://volichat.com
Page where seen: http://volichat.com/adult-chat-rooms
Marked for reference. Resolved as fixed @bugzilla.

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[Bug network/15339] getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[schwab at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=15339

Andreas Schwab <schwab at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|jackie.rosen at hushmail dot com   |

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[Bug network/15339] getaddrinfo returns EAI_SYSTEM instead of EAI_NONAME when the network is down

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15339

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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