#### Linux From Scratch - Version r13.0-6

### Appendix D. Boot and sysconfig scripts version-20250827

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# D.8. /etc/rc.d/init.d/checkfs

    #!/bin/sh
    ########################################################################
    # Begin checkfs
    #
    # Description : File System Check
    #
    # Authors     : Gerard Beekmans - gerard@linuxfromscratch.org
    #               A. Luebke - luebke@users.sourceforge.net
    #               DJ Lucas - dj@linuxfromscratch.org
    # Update      : Bruce Dubbs - bdubbs@linuxfromscratch.org
    #
    # Version     : LFS 7.0
    #
    # Based on checkfs script from LFS-3.1 and earlier.
    #
    # From man fsck
    # 0    - No errors
    # 1    - File system errors corrected
    # 2    - System should be rebooted
    # 4    - File system errors left uncorrected
    # 8    - Operational error
    # 16   - Usage or syntax error
    # 32   - Fsck canceled by user request
    # 128  - Shared library error
    #
    #########################################################################

    ### BEGIN INIT INFO
    # Provides:            checkfs
    # Required-Start:      udev swap
    # Should-Start:
    # Required-Stop:
    # Should-Stop:
    # Default-Start:       S
    # Default-Stop:
    # Short-Description:   Checks local filesystems before mounting.
    # Description:         Checks local filesystems before mounting.
    # X-LFS-Provided-By:   LFS
    ### END INIT INFO

    . /lib/lsb/init-functions

    case "${1}" in
       start)
          if [ -f /fastboot ]; then
             msg="/fastboot found, will omit "
             msg="${msg} file system checks as requested.\n"
             log_info_msg "${msg}"
             exit 0
          fi

          log_info_msg "Mounting root file system in read-only mode... "
          mount -n -o remount,ro / >/dev/null

          if [ ${?} != 0 ]; then
             log_failure_msg2
             msg="\n\nCannot check root "
             msg="${msg}filesystem because it could not be mounted "
             msg="${msg}in read-only mode.\n\n"
             msg="${msg}After you press Enter, this system will be "
             msg="${msg}halted and powered off.\n\n"
             log_failure_msg "${msg}"

             log_info_msg "Press Enter to continue..."
             wait_for_user
             /etc/rc.d/init.d/halt start
          else
             log_success_msg2
          fi

          if [ -f /forcefsck ]; then
             msg="/forcefsck found, forcing file"
             msg="${msg} system checks as requested."
             log_success_msg "$msg"
             options="-f"
          else
             options=""
          fi

          log_info_msg "Checking file systems..."
          # Note: -a option used to be -p; but this fails e.g. on fsck.minix
          if is_true "$VERBOSE_FSCK"; then
            fsck ${options} -a -A -C -T
          else
            fsck ${options} -a -A -C -T >/dev/null
          fi

          error_value=${?}

          if [ "${error_value}" = 0 ]; then
             log_success_msg2
          fi

          if [ "${error_value}" = 1 ]; then
             msg="\nWARNING:\n\nFile system errors "
             msg="${msg}were found and have been corrected.\n"
             msg="${msg}      You may want to double-check that "
             msg="${msg}everything was fixed properly."
             log_warning_msg "$msg"
          fi

          if [ "${error_value}" = 2 -o "${error_value}" = 3 ]; then
             msg="\nWARNING:\n\nFile system errors "
             msg="${msg}were found and have been "
             msg="${msg}corrected, but the nature of the "
             msg="${msg}errors require this system to be rebooted.\n\n"
             msg="${msg}After you press enter, "
             msg="${msg}this system will be rebooted\n\n"
             log_failure_msg "$msg"

             log_info_msg "Press Enter to continue..."
             wait_for_user
             reboot -f
          fi

          if [ "${error_value}" -gt 3 -a "${error_value}" -lt 16 ]; then
             msg="\nFAILURE:\n\nFile system errors "
             msg="${msg}were encountered that could not be "
             msg="${msg}fixed automatically.\nThis system "
             msg="${msg}cannot continue to boot and will "
             msg="${msg}therefore be halted until those "
             msg="${msg}errors are fixed manually by a "
             msg="${msg}System Administrator.\n\n"
             msg="${msg}After you press Enter, this system will be "
             msg="${msg}halted and powered off.\n\n"
             log_failure_msg "$msg"

             log_info_msg "Press Enter to continue..."
             wait_for_user
             /etc/rc.d/init.d/halt start
          fi

          if [ "${error_value}" -ge 16 ]; then
             msg="FAILURE:\n\nUnexpected failure "
             msg="${msg}running fsck.  Exited with error "
             msg="${msg} code: ${error_value}.\n"
             log_info_msg $msg
             exit ${error_value}
          fi

          exit 0
          ;;
       *)
          echo "Usage: ${0} {start}"
          exit 1
          ;;
    esac

    # End checkfs

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