/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */ /* * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana * University Research and Technology * Corporation. All rights reserved. * Copyright (c) 2004-2005 The University of Tennessee and The University * of Tennessee Research Foundation. All rights * reserved. * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, * University of Stuttgart. All rights reserved. * Copyright (c) 2004-2005 The Regents of the University of California. * All rights reserved. * Copyright (c) 2010 Oak Ridge National Laboratory. * All rights reserved. * Copyright (c) 2010-2022 Cisco Systems, Inc. All rights reserved * Copyright (c) 2010 IBM Corporation. All rights reserved. * Copyright (c) 2014 Los Alamos National Security, LLC. All rights * reserved. * Copyright (c) 2018 Research Organization for Information Science * and Technology (RIST). All rights reserved. * Copyright (c) 2018 Amazon.com, Inc. or its affiliates. All Rights reserved. * $COPYRIGHT$ * * Additional copyrights may follow * * $HEADER$ */ #include "opal_config.h" #include #include #include #include #include #ifdef HAVE_SYS_MOUNT_H #include #endif #ifdef HAVE_SYS_STATFS_H #include #endif #ifdef HAVE_SYS_VFS_H #include #endif #include "support.h" #include "opal/util/path.h" #include "opal/util/output.h" #include "opal/util/printf.h" #define DEBUG /* * On Linux, if this test is run with no command line params, it will * run "mount" and analyze the output. It will slurp up all mount * points and figure out if they are network mounts or not. Then it * will send each of the mount points through opal_path_nfs() and * compare the answer it gets to the answer it slurped from the output * of "mount". * * On all platforms, if you provide one or more command line options, * each command line option is given to opal_path_nfs() and the result * is sent to stdout. */ #if !defined(__linux__) int main(int argc, char* argv[]) { if (argc > 1) { int i; printf("Interactive opal_path_nfs() test:\n"); for (i = 1; i < argc; i++) { printf ("Is dir[%d]:%s one of the detected network file systems? %s\n", i, argv[i], opal_path_nfs (argv[i], NULL) ? "Yes": "No"); } return 0; } printf("No filename was given; nothing to do\n"); return 77; } #else /* __linux__ */ static void test(char* file, bool expect); static void get_mounts (int * num_dirs, char ** dirs[], bool ** nfs); int main(int argc, char* argv[]) { int num_dirs; char ** dirs; bool * nfs; test_init("opal_path_nfs()"); #ifdef DEBUG printf ("Test usage: ./opal_path_nfs [DIR]\n"); printf ("On Linux interprets output from mount(8) to check for nfs and verify opal_path_nfs()\n"); printf ("Additionally, you may specify multiple DIR on the cmd-line, of which you the output\n"); #endif if (1 < argc) { int i; for (i = 1; i < argc; i++) printf ("Is dir[%d]:%s one of the detected network file systems? %s\n", i, argv[i], opal_path_nfs (argv[i], NULL) ? "Yes": "No"); } get_mounts (&num_dirs, &dirs, &nfs); while (num_dirs--) { test (dirs[num_dirs], nfs[num_dirs]); } /* All done */ return test_finalize(); } void test(char* file, bool expect) { #ifdef DEBUG printf ("test(): file:%s bool:%d\n", file, expect); #endif if (expect == opal_path_nfs (file, NULL)) { test_success(); } else { char * msg; opal_asprintf(&msg, "Mismatch: input \"%s\", expected:%d got:%d\n", file, expect, !expect); test_failure(msg); free(msg); } } void get_mounts (int * num_dirs, char ** dirs[], bool * nfs[]) { #define SIZE 1024 char * cmd = "mount | cut -f3,5 -d' ' > opal_path_nfs.out"; int rc; int i; FILE * file; char ** dirs_tmp; bool * nfs_tmp; char buffer[SIZE]; struct statfs mystatfs; rc = system (cmd); if (-1 == rc) { *num_dirs = 0; **dirs = NULL; *nfs = NULL; } /* First, count how many mount points there are. Previous versions of this test tried to have a (large) constant-sized array for the mount points, but periodically it would break because we would run this test on a system with a larger number of mount points than the array. So just count and make sure to have an array large enough. */ file = fopen("opal_path_nfs.out", "r"); int count = 0; while (NULL != fgets (buffer, SIZE, file)) { ++count; } printf("Found %d mounts\n", count); // Add one more so we can have a NULL entry at the end ++count; dirs_tmp = (char**) calloc (count, sizeof(char*)); nfs_tmp = (bool*) calloc (count, sizeof(bool)); i = 0; rc = 4711; rewind(file); // i should never be more than count, but be safe anyway. while (i < count && NULL != fgets (buffer, SIZE, file)) { int mount_known; char fs[MAXNAMLEN]; if (!dirs_tmp[i]) { dirs_tmp[i] = malloc (MAXNAMLEN); } if (2 != (rc = sscanf (buffer, "%s %s\n", dirs_tmp[i], fs))) { goto out; } /* * rpc_pipefs is a FS mounted on /var/lib/nfs/rpc_pipefs for NFS4 * Cannot distinguish it from NFS in opal_path_nfs, therefore just * disregard it, as it is NOT an parallel filesystem... */ if (0 == strcasecmp (fs, "rpc_pipefs")) { continue; } /* Per https://svn.open-mpi.org/trac/ompi/ticket/4767, Linux lies about fuse filesystems. Skip them. */ if (0 == strncasecmp(fs, "fuse.", 5)) { continue; } /* If we get an fs type of "none", skip it (e.g., https://www.open-mpi.org/community/lists/devel/2012/09/11493.php) */ if (0 == strcasecmp(fs, "none")) { continue; } /* If we can not stat the fs, skip it */ if (statfs (dirs_tmp[i], &mystatfs)) { continue; } /* * Later mounts override earlier mounts * (e.g. nfs-mount of /, vs. initial rootfs-mount of /). */ for (mount_known = 0; mount_known < i; mount_known++) { /* If we know this mount-point, then exit early */ if (0 == strcasecmp (dirs_tmp[mount_known], dirs_tmp[i])) { #ifdef DEBUG printf ("get_mounts: already know dir[%d]:%s\n", mount_known, dirs_tmp[mount_known]); #endif break; } } nfs_tmp[mount_known] = false; if (0 == strcasecmp (fs, "nfs") || 0 == strcasecmp (fs, "nfs4") || 0 == strcasecmp (fs, "lustre") || 0 == strcasecmp (fs, "panfs") || 0 == strcasecmp (fs, "gpfs")) nfs_tmp[mount_known] = true; #ifdef DEBUG printf ("get_mounts: dirs[%d]:%s fs:%s nfs:%s\n", mount_known, dirs_tmp[mount_known], fs, nfs_tmp[mount_known] ? "Yes" : "No"); #endif if (mount_known >= i) i++; } out: *num_dirs = i; *dirs = dirs_tmp; *nfs = nfs_tmp; } #endif /* __linux__ */