* fix ompi_ifaddrtoname to return the correct error code (it was returning

OMPI_ERROR if it found something and OMPI_SUCCESS otherwise).  Also
  look for INADDR_NONE instead of INADDR_ANY as the return from inet_addr()
* add convinience function ompi_ifislocal to quickly test if a given
  hostname or IP address (in dotted-quad form) is a local address
* don't ssh to the local machine, but fork() / exec() the bootproxy directly
  if ompi_ifislocal returns true *AND* there is no username specified
  for the given host
* remove the llm hack to translate localhost -> local machine name

This commit was SVN r3450.

src/mca/llm/base/llm_base_parse_hostfile.c

@@ -99,13 +99,7 @@ parse_line(int first, mca_llm_base_hostfile_node_t *node)
     int ret;
 
     if (MCA_LLM_BASE_STRING == first) {
-        /* don't allow localhost or 127.0.0.1 */
-        if ((strncmp("localhost", mca_llm_base_string, strlen("localhost")) == 0) ||
-            (strcmp("127.0.0.1", mca_llm_base_string) == 0)) {
-            gethostname(node->hostname, MAXHOSTNAMELEN);
-        } else {
-            strncpy(node->hostname, mca_llm_base_string, MAXHOSTNAMELEN);
-        }
+        strncpy(node->hostname, mca_llm_base_string, MAXHOSTNAMELEN);
         node->given_count = 1;
     } else {
         parse_error();

src/mca/pcm/rsh/pcm_rsh_spawn.c

@@ -34,6 +34,7 @@
 #include "mca/ns/base/base.h"
 #include "util/proc_info.h"
 #include "util/show_help.h"
+#include "util/if.h"
 
 /*
  * Internal constants
@@ -306,7 +307,7 @@ internal_spawn_proc(mca_pcm_rsh_module_t *me,
     int cmdc = 0;
     char *printable = NULL;
     int stderr_is_error = me->ignore_stderr == 0 ? 1 : 0;
-    char *username = NULL;
+    char *start_username = NULL;
     int ret;
     pid_t pid;
     FILE *fp;
@@ -314,37 +315,43 @@ internal_spawn_proc(mca_pcm_rsh_module_t *me,
     int i;
     char *tmp;
     bool high_qos = (0 != (me->constraints & OMPI_RTE_SPAWN_HIGH_QOS));
+    bool is_local;
 
     start_node = (mca_llm_base_hostfile_node_t*) ompi_list_get_first(hostlist);
+    start_username = mca_pcm_base_get_username(start_node);
 
-    /*
-     * Check to see if we need to do the .profile thing
-     */
-    ret = internal_need_profile(me, start_node, stderr_is_error,
-                                &needs_profile);
-    if (OMPI_SUCCESS != ret) {
-        goto cleanup;
-    }
+    /* add all the startup stuff if needed */
+    is_local = ompi_ifislocal(start_node->hostname) && 
+        start_username == NULL;
 
+    if (!is_local) {
+        /*
+         * Check to see if we need to do the .profile thing
+         */
+        ret = internal_need_profile(me, start_node, stderr_is_error,
+                                    &needs_profile);
+        if (OMPI_SUCCESS != ret) {
+            goto cleanup;
+        }
 
-    /*
-     * Build up start array
-     */
+        /*
+         * Build up start array
+         */
 
-    /* build up the rsh command part */
-    cmdv = ompi_argv_split(me->rsh_agent, ' ');
-    cmdc = ompi_argv_count(cmdv);
+        /* build up the rsh command part */
+        cmdv = ompi_argv_split(me->rsh_agent, ' ');
+        cmdc = ompi_argv_count(cmdv);
 
-    ompi_argv_append(&cmdc, &cmdv, start_node->hostname);
-    username = mca_pcm_base_get_username(start_node);
-    if (NULL != username) {
-        ompi_argv_append(&cmdc, &cmdv, "-l");
-        ompi_argv_append(&cmdc, &cmdv, username);
-    }
+        ompi_argv_append(&cmdc, &cmdv, start_node->hostname);
+        if (NULL != start_username) {
+            ompi_argv_append(&cmdc, &cmdv, "-l");
+            ompi_argv_append(&cmdc, &cmdv, start_username);
+        }
 
-    /* add the start of .profile thing if required */
-    if (needs_profile) {
-        ompi_argv_append(&cmdc, &cmdv, "( ! [ -e ./.profile ] || . ./.profile;");
+        /* add the start of .profile thing if required */
+        if (needs_profile) {
+            ompi_argv_append(&cmdc, &cmdv, "( ! [ -e ./.profile ] || . ./.profile;");
+        }
     }
 
     /* build the command to start */
@@ -374,7 +381,7 @@ internal_spawn_proc(mca_pcm_rsh_module_t *me,
     }
 
     /* add the end of the .profile thing if required */
-    if (needs_profile) {
+    if (!is_local && needs_profile) {
         ompi_argv_append(&cmdc, &cmdv, ")");
     }
 
@@ -464,7 +471,7 @@ proc_cleanup:
     /* free up everything we used on the way */
     if (NULL != printable) free(printable);
     if (NULL != cmd0) free(cmd0);
-    if (NULL != username) free(username);
+    if (NULL != start_username) free(start_username);
     ompi_argv_free(cmdv);
     cmdv = NULL;
     cmdc = 0;

src/util/if.c

@@ -365,11 +365,11 @@ int ompi_ifaddrtoname(const char* if_addr, char* if_name, int length)
     if(rc != OMPI_SUCCESS)
         return rc;
 
-    if(inaddr == INADDR_ANY) {
+    if(inaddr == INADDR_NONE) {
         h = gethostbyname(if_addr);
         if(h == 0) {
             ompi_output(0,"ompi_ifaddrtoname: unable to resolve %s\n", if_addr);
-            return OMPI_ERROR;
+            return OMPI_ERR_NOT_FOUND;
         }
         memcpy(&inaddr, h->h_addr, sizeof(inaddr));
     }
@@ -379,10 +379,10 @@ int ompi_ifaddrtoname(const char* if_addr, char* if_name, int length)
         intf =  (ompi_if_t*)ompi_list_get_next(intf)) {
         if(intf->if_addr.sin_addr.s_addr == inaddr) {
             strncpy(if_name, intf->if_name, length);
-            return OMPI_ERROR;
+            return OMPI_SUCCESS;
         }
     }
-    return OMPI_SUCCESS;
+    return OMPI_ERR_NOT_FOUND;
 }
 
 /*
@@ -516,3 +516,17 @@ int ompi_ifindextoname(int if_index, char* if_name, int length)
     }
     return OMPI_ERROR;
 }
+
+
+bool
+ompi_ifislocal(char *hostname)
+{
+    const int len = 100;
+    char addrname[len - 1];
+    int ret;
+
+    ret = ompi_ifaddrtoname(hostname, addrname, len);
+    if (OMPI_SUCCESS == ret) return true;
+
+    return false;
+}

src/util/if.h

@@ -88,6 +88,15 @@ OMPI_DECLSPEC int ompi_ifindextoaddr(int if_index, struct sockaddr*, int);
  *  @param size (IN)      Interface address buffer size
  */
 OMPI_DECLSPEC int ompi_ifindextomask(int if_index, struct sockaddr*, int);
+
+/**
+ * Determine if given hostname / IP address is a local address
+ *
+ * @param hostname (IN)    Hostname (or stringified IP address)
+ * @return                 true if \c hostname is local, false otherwise
+ */
+OMPI_DECLSPEC bool ompi_ifislocal(char *hostname);
+
 #if defined(c_plusplus) || defined(__cplusplus)
 }
 #endif

test/util/Makefile.am

@@ -7,6 +7,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/test/support -DOMPI_ENABLE_DEBUG_OVERRIDE=1 -g
 
 noinst_PROGRAMS = \
 	ompi_numtostr \
+	ompi_if \
 	ompi_pack \
 	ompi_os_path \
 	ompi_sys_info \
@@ -20,6 +21,12 @@ ompi_numtostr_LDADD = \
         $(top_builddir)/test/support/libsupport.la 
 ompi_numtostr_DEPENDENCIES = $(ompi_numtostr_LDADD)
 
+ompi_if_SOURCES = ompi_if.c
+ompi_if_LDADD = \
+        $(top_builddir)/src/libmpi.la \
+        $(top_builddir)/test/support/libsupport.la 
+ompi_if_DEPENDENCIES = $(ompi_if_LDADD)
+
 ompi_argv_SOURCES = ompi_argv.c
 ompi_argv_LDADD = \
         $(top_builddir)/src/libmpi.la \

test/util/ompi_if.c

@@ -0,0 +1,115 @@
+/*
+ * $HEADER$
+ */
+
+#include "ompi_config.h"
+
+#if 0
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#endif
+
+#include "runtime/runtime.h"
+#include "util/if.h"
+#include "support.h"
+#include "util/bufpack.h"
+#include "include/constants.h"
+
+
+static bool
+test_ifaddrtoname(char *addr)
+{
+    int ret;
+    char addrname[100];
+    int len = 99;
+
+    ret = ompi_ifaddrtoname(addr, addrname, len);
+
+    if (ret == OMPI_SUCCESS) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+int
+main(int argc, char *argv[])
+{
+    char hostname[MAXHOSTNAMELEN];
+
+    ompi_init(argc, argv);
+    test_init("ompi_if");
+
+    /* 127.0.0.1 */
+    if (test_ifaddrtoname("127.0.0.1")) {
+        test_success();
+    } else {
+        test_failure("ifaddrtoname test failed for 127.0.0.1");
+    }
+    if (ompi_ifislocal("127.0.0.1")) {
+        test_success();
+    } else {
+        test_failure("ifislocal test failed for 127.0.0.1");
+    }
+
+    /* localhost */
+    if (test_ifaddrtoname("localhost")) {
+        test_success();
+    } else {
+        test_failure("ifaddrtoname test failed for localhost");
+    }
+    if (ompi_ifislocal("localhost")) {
+        test_success();
+    } else {
+        test_failure("ifislocal test failed for localhost");
+    }
+
+    /* 0.0.0.0 */
+    if (test_ifaddrtoname("0.0.0.0")) {
+        test_failure("ifaddrtoname test failed for 0.0.0.0");
+    } else {
+        test_success();
+    }
+    if (ompi_ifislocal("0.0.0.0")) {
+        test_failure("ompi_ifislocal test failed for 0.0.0.0");
+    } else {
+        test_success();
+    }
+
+    /* foo.example.com */
+    if (test_ifaddrtoname("foo.example.com")) {
+        test_failure("ifaddrtoname test failed for foo.example.com");
+    } else {
+        test_success();
+    }
+    if (ompi_ifislocal("foo.example.com")) {
+        test_failure("ifislocal test failed for foo.example.com");
+    } else {
+        test_success();
+    }
+
+    /* local host name */
+    gethostname(hostname, MAXHOSTNAMELEN);
+    if (test_ifaddrtoname(hostname)) {
+        test_success();
+    } else {
+        test_failure("ifaddrtoname test failed for local host name");
+    }
+    if (ompi_ifislocal(hostname)) {
+        test_success();
+    } else {
+        test_failure("ifislocal test failed for local host name");
+    }
+
+    test_finalize();
+    ompi_finalize();
+
+    return 0;
+}