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authorRavishankar N <ravishankar@redhat.com>2014-03-27 15:04:40 +0530
committerVijay Bellur <vbellur@redhat.com>2014-04-07 09:49:16 -0700
commit0c20b17c09b2eca82f3c79013fd3fe1c72a957fd (patch)
tree094500598619d3f981b04acc47f023c9d860d346
parentef08cf0fb6ce63094468d85f5b3bab7637e88b00 (diff)
tests/afr: self-heal
Basic functional tests related to self-heal. arequal-checksum.c is taken from https://github.com/raghavendrabhat/arequal after consent from all authors. Change-Id: I43facc31c61375f4dbe58bbb46238e15df5c9011 BUG: 1080759 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/7357 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
-rw-r--r--tests/basic/afr/self-heal.t237
-rw-r--r--tests/utils/arequal-checksum.c611
2 files changed, 848 insertions, 0 deletions
diff --git a/tests/basic/afr/self-heal.t b/tests/basic/afr/self-heal.t
new file mode 100644
index 0000000..df9526b
--- /dev/null
+++ b/tests/basic/afr/self-heal.t
@@ -0,0 +1,237 @@
+#!/bin/bash
+#Self-heal tests
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+cleanup;
+
+#Init
+AREQUAL_PATH=$(dirname $0)/../../utils
+build_tester $AREQUAL_PATH/arequal-checksum.c
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 2 $H0:$B0/brick{0,1}
+TEST $CLI volume set $V0 stat-prefetch off
+TEST $CLI volume start $V0
+TEST $CLI volume set $V0 cluster.background-self-heal-count 0
+TEST glusterfs --volfile-id=$V0 --volfile-server=$H0 $M0 --entry-timeout=0 --attribute-timeout=0;
+
+###############################################################################
+#1.Test successful data, metadata and entry self-heal
+
+#Test
+TEST mkdir -p $M0/abc/def $M0/abc/ghi
+TEST dd if=/dev/urandom of=$M0/abc/file_abc.txt bs=1M count=2 2>/dev/null
+TEST dd if=/dev/urandom of=$M0/abc/def/file_abc_def_1.txt bs=1M count=2 2>/dev/null
+TEST dd if=/dev/urandom of=$M0/abc/def/file_abc_def_2.txt bs=1M count=3 2>/dev/null
+TEST dd if=/dev/urandom of=$M0/abc/ghi/file_abc_ghi.txt bs=1M count=4 2>/dev/null
+
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST truncate -s 0 $M0/abc/def/file_abc_def_1.txt
+NEW_UID=36
+NEW_GID=36
+TEST chown $NEW_UID:$NEW_GID $M0/abc/def/file_abc_def_2.txt
+TEST rm -rf $M0/abc/ghi
+TEST mkdir -p $M0/def/ghi $M0/jkl/mno
+TEST dd if=/dev/urandom of=$M0/def/ghi/file1.txt bs=1M count=2 2>/dev/null
+TEST dd if=/dev/urandom of=$M0/def/ghi/file2.txt bs=1M count=3 2>/dev/null
+TEST dd if=/dev/urandom of=$M0/jkl/mno/file.txt bs=1M count=4 2>/dev/null
+TEST chown $NEW_UID:$NEW_GID $M0/def/ghi/file2.txt
+
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check all files created/deleted on brick1 are also replicated on brick 0
+#(i.e. no reverse heal has happened)
+TEST ls $B0/brick0/def/ghi/file1.txt
+TEST ls $B0/brick0/def/ghi/file2.txt
+TEST ls $B0/brick0/jkl/mno/file.txt
+TEST ! ls $B0/brick0/abc/ghi
+EXPECT "$NEW_UID$NEW_GID" stat --printf=%u%g $B0/brick0/abc/def/file_abc_def_2.txt
+TEST diff <($AREQUAL_PATH/arequal-checksum -p $B0/brick0 -i .glusterfs) <($AREQUAL_PATH/arequal-checksum -p $B0/brick1 -i .glusterfs)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#2.Test successful self-heal of different file types.
+
+#Test
+TEST touch $M0/file
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST rm -f $M0/file
+TEST mkdir $M0/file
+
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check heal has happened in the correct direction
+TEST test -d $B0/brick0/file
+TEST diff <($AREQUAL_PATH/arequal-checksum -p $B0/brick0 -i .glusterfs) <($AREQUAL_PATH/arequal-checksum -p $B0/brick1 -i .glusterfs)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#3.Test successful self-heal of file permissions.
+
+#Test
+TEST touch $M0/file
+TEST chmod 666 $M0/file
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST chmod 777 $M0/file
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check heal has happened in the correct direction
+EXPECT "777" stat --printf=%a $B0/brick0/file
+TEST diff <($AREQUAL_PATH/arequal-checksum -p $B0/brick0 -i .glusterfs) <($AREQUAL_PATH/arequal-checksum -p $B0/brick1 -i .glusterfs)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#4.Test successful self-heal of file ownership
+
+#Test
+TEST touch $M0/file
+TEST kill_brick $V0 $H0 $B0/brick0
+NEW_UID=36
+NEW_GID=36
+TEST chown $NEW_UID:$NEW_GID $M0/file
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check heal has happened in the correct direction
+EXPECT "$NEW_UID$NEW_GID" stat --printf=%u%g $B0/brick0/file
+TEST diff <($AREQUAL_PATH/arequal-checksum -p $B0/brick0 -i .glusterfs) <($AREQUAL_PATH/arequal-checksum -p $B0/brick1 -i .glusterfs)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#5.File size test
+
+#Test
+TEST touch $M0/file
+TEST `echo "write1">$M0/file`
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST `echo "write2">>$M0/file`
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+TEST kill_brick $V0 $H0 $B0/brick1
+TEST truncate -s 0 $M0/file
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 1
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check heal has happened in the correct direction
+EXPECT 0 stat --printf=%s $B0/brick1/file
+TEST diff <($AREQUAL_PATH/arequal-checksum -p $B0/brick0 -i .glusterfs) <($AREQUAL_PATH/arequal-checksum -p $B0/brick1 -i .glusterfs)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#6.GFID heal
+
+#Test
+TEST touch $M0/file
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST rm -f $M0/file
+TEST touch $M0/file
+GFID=$(gf_get_gfid_xattr $B1/brick1/file)
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check heal has happened in the correct direction
+EXPECT "$GFID" gf_get_gfid_xattr $B0/brick0/file
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#7. Link/symlink heal
+
+#Test
+TEST touch $M0/file
+TEST ln $M0/file $M0/link_to_file
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST rm -f $M0/link_to_file
+TEST ln -s $M0/file $M0/link_to_file
+TEST ln $M0/file $M0/hard_link_to_file
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+#check heal has happened in the correct direction
+TEST test -f $B0/brick0/hard_link_to_file
+TEST test -h $B0/brick0/link_to_file
+TEST diff <($AREQUAL_PATH/arequal-checksum -p $B0/brick0 -i .glusterfs) <($AREQUAL_PATH/arequal-checksum -p $B0/brick1 -i .glusterfs)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+#8. Heal xattrs set by application
+
+#Test
+TEST touch $M0/file
+TEST setfattr -n user.myattr_1 -v My_attribute_1 $M0/file
+TEST setfattr -n user.myattr_2 -v "My_attribute_2" $M0/file
+TEST kill_brick $V0 $H0 $B0/brick0
+TEST setfattr -n user.myattr_1 -v "My_attribute_1_modified" $M0/file
+TEST setfattr -n user.myattr_3 -v "My_attribute_3" $M0/file
+TEST $CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST $CLI volume heal $V0
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+TEST diff <(echo "user.myattr_1=\"My_attribute_1_modified\"") <(getfattr -n user.myattr_1 $B0/brick1/file|grep user.myattr_1)
+TEST diff <(echo "user.myattr_3=\"My_attribute_3\"") <(getfattr -n user.myattr_3 $B0/brick1/file|grep user.myattr_3)
+
+#Cleanup
+TEST rm -rf $M0/*
+###############################################################################
+
+TEST rm -rf $AREQUAL_PATH/arequal-checksum
+cleanup;
diff --git a/tests/utils/arequal-checksum.c b/tests/utils/arequal-checksum.c
new file mode 100644
index 0000000..bdc6af4
--- /dev/null
+++ b/tests/utils/arequal-checksum.c
@@ -0,0 +1,611 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#define _XOPEN_SOURCE 600
+
+#include <ftw.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <libgen.h>
+#include <stdint.h>
+#include <alloca.h>
+#include <dirent.h>
+#include <argp.h>
+
+
+int debug = 0;
+
+typedef struct {
+ char test_directory[4096];
+ char **ignored_directory;
+ unsigned int directories_ignored;
+} arequal_config_t;
+
+static arequal_config_t arequal_config;
+
+static error_t
+arequal_parse_opts (int key, char *arg, struct argp_state *_state);
+
+static struct argp_option arequal_options[] = {
+ { "ignore", 'i', "IGNORED", 0,
+ "entry in the given path to be ignored"},
+ { "path", 'p', "PATH", 0, "path where arequal has to be run"},
+ {0, 0, 0, 0, 0}
+};
+
+#define DBG(fmt ...) do { \
+ if (debug) { \
+ fprintf (stderr, "D "); \
+ fprintf (stderr, fmt); \
+ } \
+ } while (0)
+
+void
+add_to_list (char *arg);
+void
+get_absolute_path (char directory[], char *arg);
+
+static inline int roof(int a, int b)
+{
+ return ((((a)+(b)-1)/((b)?(b):1))*(b));
+}
+
+void
+add_to_list (char *arg)
+{
+ char *string = NULL;
+ int index = 0;
+
+ index = arequal_config.directories_ignored - 1;
+ string = strdup (arg);
+
+ if (!arequal_config.ignored_directory) {
+ arequal_config.ignored_directory = calloc (1, sizeof (char *));
+ } else
+ arequal_config.ignored_directory =
+ realloc (arequal_config.ignored_directory,
+ sizeof (char *) * (index+1));
+
+ arequal_config.ignored_directory[index] = string;
+}
+
+static error_t
+arequal_parse_opts (int key, char *arg, struct argp_state *_state)
+{
+ switch (key) {
+ case 'i':
+ {
+ arequal_config.directories_ignored++;
+ add_to_list (arg);
+ }
+ break;
+ case 'p':
+ {
+ if (arg[0] == '/')
+ strcpy (arequal_config.test_directory, arg);
+ else
+ get_absolute_path (arequal_config.test_directory, arg);
+
+ if (arequal_config.test_directory
+ [strlen(arequal_config.test_directory) - 1] == '/')
+ arequal_config.test_directory
+ [strlen(arequal_config.test_directory) - 1] = '\0';
+ }
+ break;
+
+ case ARGP_KEY_NO_ARGS:
+ break;
+ case ARGP_KEY_ARG:
+ break;
+ case ARGP_KEY_END:
+ if (_state->argc == 1) {
+ argp_usage (_state);
+ }
+
+ }
+
+ return 0;
+}
+
+void
+get_absolute_path (char directory[], char *arg)
+{
+ char cwd[4096] = {0,};
+
+ if (getcwd (cwd, sizeof (cwd)) == NULL)
+ printf ("some error in getting cwd\n");
+
+ if (strcmp (arg, ".") != 0) {
+ if (cwd[strlen(cwd)] != '/')
+ cwd[strlen (cwd)] = '/';
+ strcat (cwd, arg);
+ }
+ strcpy (directory, cwd);
+}
+
+static struct argp argp = {
+ arequal_options,
+ arequal_parse_opts,
+ "",
+ "arequal - Tool which calculates the checksum of all the entries"
+ "present in a given directory"
+};
+
+/* All this runs in single thread, hence using 'global' variables */
+
+unsigned long long avg_uid_file = 0;
+unsigned long long avg_uid_dir = 0;
+unsigned long long avg_uid_symlink = 0;
+unsigned long long avg_uid_other = 0;
+
+unsigned long long avg_gid_file = 0;
+unsigned long long avg_gid_dir = 0;
+unsigned long long avg_gid_symlink = 0;
+unsigned long long avg_gid_other = 0;
+
+unsigned long long avg_mode_file = 0;
+unsigned long long avg_mode_dir = 0;
+unsigned long long avg_mode_symlink = 0;
+unsigned long long avg_mode_other = 0;
+
+unsigned long long global_ctime_checksum = 0;
+
+
+unsigned long long count_dir = 0;
+unsigned long long count_file = 0;
+unsigned long long count_symlink = 0;
+unsigned long long count_other = 0;
+
+
+unsigned long long checksum_file1 = 0;
+unsigned long long checksum_file2 = 0;
+unsigned long long checksum_dir = 0;
+unsigned long long checksum_symlink = 0;
+unsigned long long checksum_other = 0;
+
+
+unsigned long long
+checksum_path (const char *path)
+{
+ unsigned long long csum = 0;
+ unsigned long long *nums = 0;
+ int len = 0;
+ int cnt = 0;
+
+ len = roof (strlen (path), sizeof (csum));
+ cnt = len / sizeof (csum);
+
+ nums = alloca (len);
+ memset (nums, 0, len);
+ strcpy ((char *)nums, path);
+
+ while (cnt) {
+ csum ^= *nums;
+ nums++;
+ cnt--;
+ }
+
+ return csum;
+}
+
+int
+checksum_md5 (const char *path, const struct stat *sb)
+{
+ uint64_t this_data_checksum = 0;
+ FILE *filep = NULL;
+ char *cmd = NULL;
+ char strvalue[17] = {0,};
+ int ret = -1;
+ int len = 0;
+ const char *pos = NULL;
+ char *cpos = NULL;
+
+ /* Have to escape single-quotes in filename.
+ * First, calculate the size of the buffer I'll need.
+ */
+ for (pos = path; *pos; pos++) {
+ if ( *pos == '\'' )
+ len += 4;
+ else
+ len += 1;
+ }
+
+ cmd = malloc(sizeof(char) * (len + 20));
+ cmd[0] = '\0';
+
+ /* Now, build the command with single quotes escaped. */
+
+ cpos = cmd;
+ strcpy(cpos, "md5sum '");
+ cpos += 8;
+
+ /* Add the file path, with every single quotes replaced with this sequence:
+ * '\''
+ */
+
+ for (pos = path; *pos; pos++) {
+ if ( *pos == '\'' ) {
+ strcpy(cpos, "'\\''");
+ cpos += 4;
+ } else {
+ *cpos = *pos;
+ cpos++;
+ }
+ }
+
+ /* Add on the trailing single-quote and null-terminate. */
+ strcpy(cpos, "'");
+
+ filep = popen (cmd, "r");
+ if (!filep) {
+ perror (path);
+ goto out;
+ }
+
+ if (fread (strvalue, sizeof (char), 16, filep) != 16) {
+ fprintf (stderr, "%s: short read\n", path);
+ goto out;
+ }
+
+ this_data_checksum = strtoull (strvalue, NULL, 16);
+ if (-1 == this_data_checksum) {
+ fprintf (stderr, "%s: %s\n", strvalue, strerror (errno));
+ goto out;
+ }
+ checksum_file1 ^= this_data_checksum;
+
+ if (fread (strvalue, sizeof (char), 16, filep) != 16) {
+ fprintf (stderr, "%s: short read\n", path);
+ goto out;
+ }
+
+ this_data_checksum = strtoull (strvalue, NULL, 16);
+ if (-1 == this_data_checksum) {
+ fprintf (stderr, "%s: %s\n", strvalue, strerror (errno));
+ goto out;
+ }
+ checksum_file2 ^= this_data_checksum;
+
+ ret = 0;
+out:
+ if (filep)
+ pclose (filep);
+
+ if (cmd)
+ free(cmd);
+
+ return ret;
+}
+
+int
+checksum_filenames (const char *path, const struct stat *sb)
+{
+ DIR *dirp = NULL;
+ struct dirent *entry = NULL;
+ unsigned long long csum = 0;
+ int i = 0;
+ int found = 0;
+
+ dirp = opendir (path);
+ if (!dirp) {
+ perror (path);
+ goto out;
+ }
+
+ errno = 0;
+ while ((entry = readdir (dirp))) {
+ /* do not calculate the checksum of the entries which user has
+ told to ignore and proceed to other siblings.*/
+ if (arequal_config.ignored_directory) {
+ for (i = 0;i < arequal_config.directories_ignored;i++) {
+ if ((strcmp (entry->d_name,
+ arequal_config.ignored_directory[i])
+ == 0)) {
+ found = 1;
+ DBG ("ignoring the entry %s\n",
+ entry->d_name);
+ break;
+ }
+ }
+ if (found == 1) {
+ found = 0;
+ continue;
+ }
+ }
+ csum = checksum_path (entry->d_name);
+ checksum_dir ^= csum;
+ }
+
+ if (errno) {
+ perror (path);
+ goto out;
+ }
+
+out:
+ if (dirp)
+ closedir (dirp);
+
+ return 0;
+}
+
+
+int
+process_file (const char *path, const struct stat *sb)
+{
+ int ret = 0;
+
+ count_file++;
+
+ avg_uid_file ^= sb->st_uid;
+ avg_gid_file ^= sb->st_gid;
+ avg_mode_file ^= sb->st_mode;
+
+ ret = checksum_md5 (path, sb);
+
+ return ret;
+}
+
+
+int
+process_dir (const char *path, const struct stat *sb)
+{
+ unsigned long long csum = 0;
+
+ count_dir++;
+
+ avg_uid_dir ^= sb->st_uid;
+ avg_gid_dir ^= sb->st_gid;
+ avg_mode_dir ^= sb->st_mode;
+
+ csum = checksum_filenames (path, sb);
+
+ checksum_dir ^= csum;
+
+ return 0;
+}
+
+
+int
+process_symlink (const char *path, const struct stat *sb)
+{
+ int ret = 0;
+ char buf[4096] = {0, };
+ unsigned long long csum = 0;
+
+ count_symlink++;
+
+ avg_uid_symlink ^= sb->st_uid;
+ avg_gid_symlink ^= sb->st_gid;
+ avg_mode_symlink ^= sb->st_mode;
+
+ ret = readlink (path, buf, 4096);
+ if (ret < 0) {
+ perror (path);
+ goto out;
+ }
+
+ DBG ("readlink (%s) => %s\n", path, buf);
+
+ csum = checksum_path (buf);
+
+ DBG ("checksum_path (%s) => %llx\n", buf, csum);
+
+ checksum_symlink ^= csum;
+
+ ret = 0;
+out:
+ return ret;
+}
+
+
+int
+process_other (const char *path, const struct stat *sb)
+{
+ count_other++;
+
+ avg_uid_other ^= sb->st_uid;
+ avg_gid_other ^= sb->st_gid;
+ avg_mode_other ^= sb->st_mode;
+
+ checksum_other ^= sb->st_rdev;
+
+ return 0;
+}
+
+
+int
+process_entry (const char *path, const struct stat *sb,
+ int typeflag, struct FTW *ftwbuf)
+{
+ int ret = 0;
+ char *name = NULL;
+ char *bname = NULL;
+ char *dname = NULL;
+ int i = 0;
+
+ /* The if condition below helps in ignoring some directories in
+ the given path. If the name of the entry is one of the directory
+ names that the user told to ignore, then that directory will not
+ be processed and will return FTW_SKIP_SUBTREE to nftw which will
+ not crawl this directory and move on to other siblings.
+ Note that for nftw to recognize FTW_SKIP_TREE, FTW_ACTIONRETVAL
+ should be passed as an argument to nftw.
+
+ This mainly helps in calculating the checksum of network filesystems
+ (client-server), where the server might have some hidden directories
+ for managing the filesystem. So to calculate the sanity of filesytem
+ one has to get the checksum of the client and then the export directory
+ of server by telling arequal to ignore some of the directories which
+ are not part of the namespace.
+ */
+
+ if (arequal_config.ignored_directory) {
+ name = strdup (path);
+
+ name[strlen(name)] == '\0';
+
+ bname = strrchr (name, '/');
+ if (bname)
+ bname++;
+
+ dname = dirname (name);
+ for ( i = 0; i < arequal_config.directories_ignored; i++) {
+ if ((strcmp (bname, arequal_config.ignored_directory[i])
+ == 0) && (strcmp (arequal_config.test_directory,
+ dname) == 0)) {
+ DBG ("ignoring %s\n", bname);
+ ret = FTW_SKIP_SUBTREE;
+ if (name)
+ free (name);
+ return ret;
+ }
+ }
+ }
+
+ DBG ("processing entry %s\n", path);
+
+ switch ((S_IFMT & sb->st_mode)) {
+ case S_IFDIR:
+ ret = process_dir (path, sb);
+ break;
+ case S_IFREG:
+ ret = process_file (path, sb);
+ break;
+ case S_IFLNK:
+ ret = process_symlink (path, sb);
+ break;
+ default:
+ ret = process_other (path, sb);
+ break;
+ }
+
+ if (name)
+ free (name);
+ return ret;
+}
+
+
+int
+display_counts (FILE *fp)
+{
+ fprintf (fp, "\n");
+ fprintf (fp, "Entry counts\n");
+ fprintf (fp, "Regular files : %lld\n", count_file);
+ fprintf (fp, "Directories : %lld\n", count_dir);
+ fprintf (fp, "Symbolic links : %lld\n", count_symlink);
+ fprintf (fp, "Other : %lld\n", count_other);
+ fprintf (fp, "Total : %lld\n",
+ (count_file + count_dir + count_symlink + count_other));
+
+ return 0;
+}
+
+
+int
+display_checksums (FILE *fp)
+{
+ fprintf (fp, "\n");
+ fprintf (fp, "Checksums\n");
+ fprintf (fp, "Regular files : %llx%llx\n", checksum_file1, checksum_file2);
+ fprintf (fp, "Directories : %llx\n", checksum_dir);
+ fprintf (fp, "Symbolic links : %llx\n", checksum_symlink);
+ fprintf (fp, "Other : %llx\n", checksum_other);
+ fprintf (fp, "Total : %llx\n",
+ (checksum_file1 ^ checksum_file2 ^ checksum_dir ^ checksum_symlink ^ checksum_other));
+
+ return 0;
+}
+
+
+int
+display_metadata (FILE *fp)
+{
+ fprintf (fp, "\n");
+ fprintf (fp, "Metadata checksums\n");
+ fprintf (fp, "Regular files : %llx\n",
+ (avg_uid_file + 13) * (avg_gid_file + 11) * (avg_mode_file + 7));
+ fprintf (fp, "Directories : %llx\n",
+ (avg_uid_dir + 13) * (avg_gid_dir + 11) * (avg_mode_dir + 7));
+ fprintf (fp, "Symbolic links : %llx\n",
+ (avg_uid_symlink + 13) * (avg_gid_symlink + 11) * (avg_mode_symlink + 7));
+ fprintf (fp, "Other : %llx\n",
+ (avg_uid_other + 13) * (avg_gid_other + 11) * (avg_mode_other + 7));
+
+ return 0;
+}
+
+int
+display_stats (FILE *fp)
+{
+ display_counts (fp);
+
+ display_metadata (fp);
+
+ display_checksums (fp);
+
+ return 0;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ int ret = 0;
+ int i = 0;
+
+ ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
+ if (ret != 0) {
+ fprintf (stderr, "parsing arguments failed\n");
+ return -2;
+ }
+
+ /* Use FTW_ACTIONRETVAL to take decision on what to do depending upon */
+ /* the return value of the callback function */
+ /* (process_entry in this case) */
+ ret = nftw (arequal_config.test_directory, process_entry, 30,
+ FTW_ACTIONRETVAL|FTW_PHYS|FTW_MOUNT);
+ if (ret != 0) {
+ fprintf (stderr, "ftw (%s) returned %d (%s), terminating\n",
+ argv[1], ret, strerror (errno));
+ return 1;
+ }
+
+ display_stats (stdout);
+
+ if (arequal_config.ignored_directory) {
+ for (i = 0; i < arequal_config.directories_ignored; i++) {
+ if (arequal_config.ignored_directory[i])
+ free (arequal_config.ignored_directory[i]);
+ }
+ free (arequal_config.ignored_directory);
+ }
+
+ return 0;
+}