Hi,
This patch adds common logic of fsck.nilfs2.
With the best regards,
Vyacheslav Dubeyko.
--
From: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
Subject: [PATCH v4 14/15] nilfs-utils: fsck: add common logic of fsck.nilfs2
This patch adds common logic of fsck.nilfs2.
Signed-off-by: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
---
sbin/fsck/fsck_nilfs2.c | 734 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 734 insertions(+)
create mode 100644 sbin/fsck/fsck_nilfs2.c
diff --git a/sbin/fsck/fsck_nilfs2.c b/sbin/fsck/fsck_nilfs2.c
new file mode 100644
index 0000000..7d3008d
--- /dev/null
+++ b/sbin/fsck/fsck_nilfs2.c
@@ -0,0 +1,734 @@
+/*
+ * fsck_nilfs2.c - NILFS fsck functionality (fsck.nilfs2)
+ *
+ * Copyright (C) 2012 Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
+ *
+ * This file is part of NILFS.
+ *
+ * NILFS 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * NILFS 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 NILFS; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Written by Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdio.h>
+
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif /* HAVE_STDLIB_H */
+
+#include <assert.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if HAVE_STRINGS_H
+#include <strings.h>
+#endif /* HAVE_STRINGS_H */
+
+#if HAVE_STRING_H
+#include <string.h>
+#endif /* HAVE_STRING_H */
+
+#include <stdarg.h>
+
+#include "fsck_common.h"
+#include "fsck_raw_ops.h"
+#include "nilfs_superblock.h"
+#include "nilfs_segment.h"
+#include "nilfs_checkpoint.h"
+#include "nilfs_fs_hierarchy.h"
+#include "nilfs_volume_check.h"
+
+/*****************************************************************************
+ * TODO SECTION
+ *****************************************************************************/
+
+/* 1. s_last_cno:
+ * It needs to check last checkpoint number during checkpoints checking
+ *
+ * 2. s_last_pseg:
+ * It needs to check disk block address of partial segment during
+ * segments checking
+ *
+ * 3. s_last_seq:
+ * It needs to check sequential number of last written segment during
+ * segments checking
+ *
+ * 4. s_free_blocks_count:
+ * It needs to check free blocks count after construction of volume's
+ * blocks bitmap
+ *
+ * 5. s_mnt_count
+ * It needs to save corrected value after sucessful check OR recovering
+ * of a volume in the case of RW mode and when s_mnt_count greater or
+ * equal to s_max_mnt_count
+ *
+ * 6. s_state
+ * It needs to dedicate special logic for the case not clean umount
+ * (NILFS_VALID_FS) and detection of errors by driver (NILFS_ERROR_FS)
+ *
+ * 7. s_lastcheck
+ * It needs to change timestamp of last check in the case of RW mode
+ * and ending of check without internal errors
+ */
+
+/*****************************************************************************
+ * GLOBAL VARIABLES
+ *****************************************************************************/
+
+/* Name of fsck utility */
+const char *progname = "fsck.nilfs2";
+
+/* Current exit value */
+int fsck_exit_value = RETURN_FSCK_OK;
+
+/* Name of raw device keeps volume for check */
+char *device_name;
+
+/* Check results:
+ A. It keeps check mask, firstly.
+ B. It keeps detected errors' flags after check. */
+struct fsck_check detected_err_db;
+
+/* Current mode of fsck working */
+int fsck_work_mode = FSCK_RO_MODE;
+
+/* Requested by user a snapshot number */
+__u64 requested_by_user_snapshot = UNDEFINED_SNAPSHOT;
+
+/* Array of pointers on NILFS volume's superblocks */
+struct nilfs_super_block *superblocks[SUPERBLOCK_TYPES_NUMBER] = {0};
+
+/* NILFS object for library API accessing */
+struct nilfs *nilfs_object_ptr;
+
+/* Pointer on segment references array */
+struct nilfs_segment_reference *seg_refs_array_ptr;
+
+/* Pointer on segments bitmap */
+int *segments_bitmap_ptr;
+
+/*****************************************************************************
+ * FUNCTIONS DECLARATION
+ *****************************************************************************/
+
+/* Print help message about correct using of utility and exit */
+static void fsck_usage(void);
+
+/* Print message informs about current version of the utility */
+static void show_fsck_version(void);
+
+/* Parse fsck's input parameters */
+static void parse_params(int argc, char **argv);
+
+/* Check that device name requested by user is a real partition */
+static int is_device_exist(const char *check_device_name);
+
+/* Check that device mounted or not */
+static int is_device_mounted(const char *check_device_name);
+
+/* Prepare NILFS object for library API accessing */
+static struct nilfs *prepare_nilfs_object(void);
+
+/* Destroy NILFS object */
+static void destroy_nilfs_object(struct nilfs *ptr);
+
+/* Prepare segments' sequence checking environment */
+static int prepare_segments_checking_environment(void);
+
+/* Destroy segments' sequence checking environment */
+static void destroy_segments_checking_environment(void);
+
+/*****************************************************************************
+ * IMPLEMENTATION SECTION
+ *****************************************************************************/
+
+/*****************************************************************************
+ * NAME: main (fsck.nilfs2)
+ *
+ * FUNCTION: Entry point for nilfs2 check/repair utility
+ *
+ * INTERFACE:
+ * fsck.nilfs2 <device name>
+ *
+ * [ -n ]
+ * read only check
+ * report but do not repair problems
+ *
+ * [-v level]
+ * set verbosity level [silence | info | debug]
+ *
+ * [ -V ]
+ * version information
+ * print version information and exit
+ *
+ * RETURNS:
+ * success: RETURN_FSCK_OK (0)
+ * errors corrected: RETURN_FSCK_CORRECTED (1)
+ * errors uncorrected: RETURN_FSCK_ERRORS_UNCORRECTED (4)
+ * operational error: RETURN_FSCK_OP_ERROR (8)
+ * usage error: RETURN_FSCK_USAGE_ERROR (16)
+ */
+int main(int argc, char **argv)
+{
+ int err = NILFS_OK;
+ __u64 last_snapshot = requested_by_user_snapshot;
+
+ show_fsck_version();
+ parse_params(argc, argv);
+
+ if (-BAD_DEVICE == is_device_exist(device_name)) {
+ ui_error("%s %s %s.", nilfs_message[BAD_DEVICE],
+ nilfs_message[REQUESTED_DEV], device_name);
+ fsck_usage();
+ return fsck_exit_value;
+ }
+
+ err = is_device_mounted(device_name);
+ if (-RW_MOUNT == err) {
+ internal_error("%s %s %s.",
+ nilfs_message[RW_MOUNT],
+ nilfs_message[REQUESTED_DEV],
+ device_name);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_exit;
+ } else if (-RO_MOUNT == err) {
+ internal_warning("%s %s %s.", nilfs_message[RO_MOUNT],
+ nilfs_message[REQUESTED_DEV], device_name);
+ ui_warning("%s", nilfs_message[DONT_WORK_RO_MOUNT]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_exit;
+ }
+
+ err = open_volume(device_name);
+ if (-BAD_DEVICE == err) {
+ internal_error("%s %s %s.",
+ nilfs_message[BAD_DEVICE],
+ nilfs_message[REQUESTED_DEV],
+ device_name);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_exit;
+ }
+
+ err = get_nilfs_superblocks();
+ if (NILFS_OK != err) {
+ internal_error("%s %s %s.",
+ nilfs_message[CANNOT_GET_SUPERBLOCKS],
+ nilfs_message[REQUESTED_DEV],
+ device_name);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_close_volume;
+ }
+
+ ui_info("%s", nilfs_message[SB_CHECKING_BEGIN]);
+ err = check_nilfs_superblocks();
+ if (-SB1_OK_SB2_OK == err) {
+ internal_info("%s %s %s.", nilfs_message[SB1_OK_SB2_OK],
+ nilfs_message[REQUESTED_DEV], device_name);
+ } else if (-NILFS_NOT_FOUND == err) {
+ ui_warning("%s %s %s.", nilfs_message[NILFS_NOT_FOUND],
+ nilfs_message[REQUESTED_DEV], device_name);
+ ui_warning("%s", nilfs_message[NOT_NILFS_VOLUME]);
+ goto fsck_free_sb_resources;
+ } else if (-CANNOT_DETECT_SB_STATE == err) {
+ internal_error("%s %s %s.",
+ nilfs_message[CANNOT_DETECT_SB_STATE],
+ nilfs_message[REQUESTED_DEV],
+ device_name);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_sb_resources;
+ } else {
+ if (detected_err_db.volume.errs_bmp & SB_CORRUPTION_DETECTED)
+ ui_warning("%s %s %s.",
+ nilfs_message[NILFS_HAS_CORRUPTED_SB],
+ nilfs_message[REQUESTED_DEV],
+ device_name);
+ }
+
+ nilfs_object_ptr = prepare_nilfs_object();
+ if (NULL == nilfs_object_ptr) {
+ internal_error("%s",
+ nilfs_message[CANNOT_PREPARE_NILFS_OBJ]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_sb_resources;
+ }
+
+ ui_info("%s", nilfs_message[SEGMENTS_CHECKING_BEGIN]);
+
+ err = prepare_segments_checking_environment();
+ if (err) {
+ internal_error("%s",
+ nilfs_message[CANNOT_PREPARE_SEGS_CHECK_ENV]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_destroy_nilfs_object;
+ }
+
+ err = check_nilfs_segments();
+ if (err) {
+ internal_error("%s", nilfs_message[-err]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_segs_check_env;
+ }
+
+ /* !!!! CURRENTLY HERE LOGIC BREAKS !!! */
+ /* !!!! NOT IMPLEMENTED YET !!! */
+ goto end_fsck_check;
+
+ if (UNDEFINED_SNAPSHOT == last_snapshot) {
+ last_snapshot = last_snapshot_number();
+ if (UNDEFINED_SNAPSHOT == last_snapshot) {
+ internal_error("%s",
+ nilfs_message[INVALID_SNAPSHOT_NUMBER]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_segs_check_env;
+ }
+ }
+
+ ui_info("%s", nilfs_message[SNAPSHOTS_CHECKING_BEGIN]);
+ for (__u64 cur_snapshot = first_snapshot_number();
+ cur_snapshot <= last_snapshot;
+ cur_snapshot = next_snapshot_number(cur_snapshot)) {
+
+ if (UNDEFINED_SNAPSHOT == cur_snapshot) {
+ internal_error("%s",
+ nilfs_message[INVALID_SNAPSHOT_NUMBER]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_segs_check_env;
+ }
+
+ ui_info("SNAPSHOT: %lld.", cur_snapshot);
+
+ err = fs_hierarchy_check_for_snapshot(cur_snapshot);
+ if (err) {
+ internal_error("%s",
+ nilfs_message[-err]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_segs_check_env;
+ }
+
+ err = check_snapshot(cur_snapshot);
+ if (err) {
+ internal_error("%s",
+ nilfs_message[-err]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_segs_check_env;
+ }
+
+ /*
+ * It needs to compare:
+ * 1. Block bitmaps:
+ * 1.A. Block bitmap builds on the basis of DAT file info.
+ * 1.B. Block bitmap builds on the basis of inodes info.
+ * 2. Block bitmap and array of used blocks in segments
+ * (sufile).
+ * 3. Inode bitmaps:
+ * 3.A. Inode bitmap builds on the basis of ifile.
+ * 3.B. Inode bitmap builds on the basis of hierarchy tree
+ * traversing.
+ * 4. Checkpoint and Snapshot bitmaps:
+ * 4.A. Checkpoint bitmap builds on the basis of array of
+ * checkpoints in cpfile.
+ * 4.B. Snapshot bitmap builds on the basis of snapshot
+ * list in cpfile.
+ */
+ err = compare_fs_hierarchy_and_snapshot_check();
+ if (err) {
+ internal_error("%s",
+ nilfs_message[-err]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ goto fsck_free_segs_check_env;
+ }
+ }
+
+end_fsck_check:
+ ui_info("%s %s", nilfs_message[FSCK_DOES_NOTHING],
+ nilfs_message[NOT_IMPLEMENTED]);
+
+ if (0 == detected_err_db.volume.errs_bmp)
+ ui_info(nilfs_message[SUCCESS_FAREWELL]);
+ else
+ ui_warning(nilfs_message[DETECTED_CORRUPTION_FAREWELL]);
+
+fsck_free_segs_check_env:
+ destroy_segments_checking_environment();
+
+fsck_destroy_nilfs_object:
+ if (nilfs_object_ptr)
+ destroy_nilfs_object(nilfs_object_ptr);
+
+fsck_free_sb_resources:
+ if (NILFS_OK != free_nilfs_superblocks())
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+
+fsck_close_volume:
+ if (NILFS_OK != close_volume()) {
+ internal_error("%s %s %s.",
+ nilfs_message[CANNOT_CLOSE_DEVICE],
+ nilfs_message[REQUESTED_DEV],
+ device_name);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ }
+
+fsck_exit:
+ return fsck_exit_value;
+} /* main() */
+
+/*****************************************************************************
+ * NAME: show_fsck_version (fsck.nilfs2)
+ *
+ * FUNCTION: Print message informs about current version of the utility
+ */
+static void show_fsck_version(void)
+{
+ fprintf(stdout, "%s %s (%s %s)\n",
+ progname, FSCK_VERSION, PACKAGE, PACKAGE_VERSION);
+} /* show_fsck_version() */
+
+/*****************************************************************************
+ * NAME: parse_params (fsck.nilfs2)
+ *
+ * FUNCTION: Parse fsck's input parameters. If any unrecognized
+ * parameters are detected, or if any required parameter is
+ * omitted, issue a message and exit.
+ *
+ * RETURNS:
+ * If there is an error in parse_params(), it calls fsck_usage()
+ * to remind the user of command format and proper options.
+ */
+void parse_params(int argc, char **argv)
+{
+ int c;
+ char *short_opts = "nv:V";
+ int len = 0;
+
+ /* Names of verbosity levels that
+ can be requested by user by input option */
+ const char *names[] = {
+ [KEEP_SILENCE] = "silence",
+ [BE_VERBOSE] = "info",
+ [DEBUG_SPAM] = "debug" };
+
+ while ((c = getopt(argc, argv, short_opts)) != EOF) {
+ switch (c) {
+ case 'n':
+ /*************************************
+ * read only check *
+ * report but do not repair problems *
+ *************************************/
+ fprintf(stdout, "%s %s\n",
+ nilfs_message[RO_CHECK_DOES_NOT_WORK],
+ nilfs_message[NOT_IMPLEMENTED]);
+ fsck_exit_value = RETURN_FSCK_OP_ERROR;
+ exit(fsck_exit_value);
+ break;
+
+ case 'v':
+ /**************************
+ * Set verbosity level *
+ **************************/
+ for (int index = KEEP_SILENCE;
+ index <= (DEBUG_SPAM + 1);
+ index++) {
+ if (index == (DEBUG_SPAM + 1)) {
+ fsck_usage();
+ return;
+ }
+ len = strlen(names[index]);
+ if (0 == strncmp(names[index], optarg, len)) {
+ set_verbosity_level(index);
+ break;
+ }
+ }
+ break;
+
+ case 'V':
+ /**********************
+ * print version only *
+ **********************/
+ exit(RETURN_FSCK_OK);
+ break;
+
+ default:
+ fsck_usage();
+ }
+ }
+
+ /* TODO: check params existence in together */
+
+ if (optind != argc - 1) {
+ fprintf(stderr, "[UI_ERROR]: %s\n", nilfs_message[NO_DEVICE]);
+ fsck_usage();
+ }
+
+ device_name = argv[optind];
+
+ return;
+} /* parse_params() */
+
+/*****************************************************************************
+ * NAME: fsck_usage (fsck.nilfs2)
+ *
+ * FUNCTION: Print help message about correct using of utility and exit from
+ * utility
+ */
+static void fsck_usage(void)
+{
+ fprintf(stdout, "Usage: %s [-nV] [-v level] device\n", progname);
+ fprintf(stdout,
+ "\nEmergency help:\n"
+ "-n Check read only, make no changes to the file system.\n"
+ "-v level Set verbosity level [silence | info | debug].\n"
+ "-V Print version information only.\n");
+ fsck_exit_value = RETURN_FSCK_USAGE_ERROR;
+ exit(fsck_exit_value);
+} /* fsck_usage() */
+
+/*****************************************************************************
+ * NAME: is_device_exist (fsck.nilfs2)
+ *
+ * FUNCTION: Check that device name requested by user is a real partition.
+ *
+ * PARAMETERS:
+ * @check_device_name: Name of the device for check
+ *
+ * RETURNS:
+ * NILFS_OK - requested device can be opened in RO mode.
+ * %-BAD_DEVICE - cannot open device.
+ */
+static int is_device_exist(const char *check_device_name)
+{
+ FILE *file_ptr = NULL;
+
+ internal_debug("%s", "check device name.");
+
+ if (!check_device_name) {
+ internal_debug("%s", "NULL pointer on device name.");
+ return -BAD_DEVICE;
+ }
+
+ file_ptr = fopen(check_device_name, "r");
+ if (file_ptr)
+ fclose(file_ptr);
+ else {
+ internal_debug("%s requested device name is not valid.",
+ check_device_name);
+ return -BAD_DEVICE;
+ }
+
+ internal_debug("%s requested device is opened successfully.",
+ check_device_name);
+ return NILFS_OK;
+} /* is_device_exists() */
+
+/*****************************************************************************
+ * NAME: is_device_mounted (fsck.nilfs2)
+ *
+ * FUNCTION: Check that device mounted or not.
+ *
+ * PARAMETERS:
+ * @check_device_name: Name of the device for check
+ *
+ * RETURNS:
+ * %-NOT_MOUNTED - Device is not mounted.
+ * %-RO_MOUNT - Device is mounted in RO mode.
+ * %-RW_MOUNT - Device is mounted in RW mode.
+ * %-BAD_DEVICE - Some error in function logic has occured.
+ */
+static int is_device_mounted(const char *check_device_name)
+{
+ int mount_type = 0;
+
+ internal_debug("%s", "check mount state.");
+
+ if (!check_device_name) {
+ internal_debug("%s", "NULL pointer on device name.");
+ return -BAD_DEVICE;
+ }
+
+ /* -1 means that device is mounted RW
+ -2 means that device is mounted RO */
+ mount_type = check_mount(check_device_name);
+ if (-1 == mount_type) {
+ internal_debug("%s device is RW mounted.",
+ check_device_name);
+ return -RW_MOUNT;
+ } else if (-2 == mount_type) {
+ internal_debug("%s device is RO mounted.",
+ check_device_name);
+ return -RO_MOUNT;
+ }
+
+ internal_debug("%s device is *not* mounted.",
+ check_device_name);
+ return -NOT_MOUNTED;
+} /* is_device_mounted */
+
+/*****************************************************************************
+ * NAME: prepare_nilfs_object (fsck.nilfs2)
+ *
+ * FUNCTION: Prepare NILFS object for library API accessing.
+ *
+ * RETURNS:
+ * NILFS object pointer or NULL in the case of failure.
+ */
+static struct nilfs *prepare_nilfs_object(void)
+{
+ struct nilfs *nilfs;
+
+ internal_debug("%s", "construct NILFS object.");
+
+ nilfs = malloc(sizeof(*nilfs));
+ if (!nilfs)
+ return NULL;
+
+ nilfs->n_sb = get_reliable_sb(SB_FULL_CHECK);
+ if (!nilfs->n_sb)
+ goto failed_object_preparation;
+
+ nilfs->n_devfd = device_file_descriptor();
+ nilfs->n_iocfd = -1;
+
+ nilfs->n_dev = strdup(device_name);
+ if (!nilfs->n_dev)
+ goto failed_object_preparation;
+
+ nilfs->n_ioc = NULL;
+ nilfs->n_mincno = NILFS_CNO_MIN;
+ memset(nilfs->n_sems, 0, sizeof(nilfs->n_sems));
+
+ return nilfs;
+
+failed_object_preparation:
+ free(nilfs);
+ return NULL;
+} /* prepare_nilfs_object() */
+
+/*****************************************************************************
+ * NAME: destroy_nilfs_object (fsck.nilfs2)
+ *
+ * FUNCTION: Destroy NILFS object.
+ *
+ * PARAMETERS:
+ * @ptr: NILFS object.
+ */
+static void destroy_nilfs_object(struct nilfs *ptr)
+{
+ internal_debug("destroy NILFS object for %p.", ptr);
+
+ if (!ptr)
+ return;
+
+ ptr->n_sb = NULL;
+ ptr->n_devfd = -1;
+ nilfs_close(ptr);
+} /* destroy_nilfs_object() */
+
+/*****************************************************************************
+ * NAME: prepare_segments_checking_environment (fsck.nilfs2)
+ *
+ * FUNCTION: Prepare segments' sequence checking environment.
+ *
+ * RETURNS:
+ * NILFS_OK - Segments' checking environment is prepared successfully.
+ * %-CANNOT_ALLOCATE - Cannot allocate memory for checking environment.
+ * %-UNRELIABLE_SB - Unreliable superblock.
+ */
+static int prepare_segments_checking_environment(void)
+{
+ int err;
+ struct nilfs_super_block *sb_ptr = NULL;
+ __u64 nsegs = 0;
+
+ internal_debug("%s", "begin to prepare environment.");
+
+ if (seg_refs_array_ptr || segments_bitmap_ptr) {
+ internal_warning("%s %s",
+ nilfs_message[CANNOT_ALLOCATE],
+ nilfs_message[MEMORY_ALLOCATED_YET]);
+ return -CANNOT_ALLOCATE;
+ }
+
+ sb_ptr = get_reliable_sb(CHECK_SB_NSEGMENTS);
+ if (!sb_ptr) {
+ internal_error("%s",
+ nilfs_message[UNRELIABLE_SB]);
+ return -UNRELIABLE_SB;
+ }
+
+ nsegs = le64_to_cpu(sb_ptr->s_nsegments);
+
+ seg_refs_array_ptr =
+ calloc(nsegs, sizeof(struct nilfs_segment_reference));
+ if (!seg_refs_array_ptr) {
+ internal_error("%s",
+ nilfs_message[CANNOT_ALLOCATE]);
+ err = -CANNOT_ALLOCATE;
+ goto failed_prepare_segs_check_env;
+ }
+
+ segments_bitmap_ptr = calloc(ROUNDUP_DIV(nsegs, 8), 1);
+ if (!segments_bitmap_ptr) {
+ internal_error("%s",
+ nilfs_message[CANNOT_ALLOCATE]);
+ err = -CANNOT_ALLOCATE;
+ goto failed_prepare_segs_check_env;
+ }
+
+ detected_err_db.segs_count = nsegs;
+ detected_err_db.segments = calloc(sizeof(struct segment_check), nsegs);
+ if (!detected_err_db.segments) {
+ internal_error("%s",
+ nilfs_message[CANNOT_ALLOCATE]);
+ err = -CANNOT_ALLOCATE;
+ goto failed_prepare_segs_check_env;
+ }
+
+return NILFS_OK;
+
+failed_prepare_segs_check_env:
+ destroy_segments_checking_environment();
+ return err;
+} /* prepare_segments_checking_environment() */
+
+/*****************************************************************************
+ * NAME: destroy_segments_checking_environment (fsck.nilfs2)
+ *
+ * FUNCTION: Destroy segments' sequence checking environment.
+ *
+ */
+static void destroy_segments_checking_environment(void)
+{
+ __u64 nsegs = detected_err_db.segs_count;
+
+ if (detected_err_db.segments) {
+ for (__u64 index = 0; index < nsegs; index++) {
+ if (detected_err_db.segments[index].logs)
+ free(detected_err_db.segments[index].logs);
+ }
+
+ free(detected_err_db.segments);
+ }
+
+ if (segments_bitmap_ptr)
+ free(segments_bitmap_ptr);
+
+ if (seg_refs_array_ptr)
+ free(seg_refs_array_ptr);
+} /* destroy_segments_checking_environment() */
--
1.7.9.5
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