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Bootloader::Core(3)   User Contributed Perl Documentation  Bootloader::Core(3)

NAME
       Bootloader::Core - core library for bootloader configuration

PREFACE
       This package is the core library of the bootloader configuration

SYNOPSIS
       use Bootloader::Core;

       "$res = Bootloader::Core->trim ($string);"

       "$members_ref = Bootloader::Core->MD2Members ($md_device);"

       "$md_dev = Bootloader::Core->Member2MD (string $md_member);"

       "$index = Bootloader::Core->IndexOfSection ($name, \@section_names);"

       "($device, $path) = Bootloader::Core->SplitDevPath ($path);"

       "$quoted = Bootloader::Core->Quote ($text, $when);"

       "$unquoted = Bootloader::Core->Unquote ($text);"

       "$section_ref = Bootloader::Core->FixSectionLineOrder (\@section_ref,
       \@preferred);"

       "$sections_ref Bootloader::Core->SplitLinesToSections (\@lines,
       \@section_starts);"

       "$lines_ref Bootloader::Core->MergeSectionsLines (\@sections,
       $indent);"

       "$lines_ref Bootloader::Core->ProcessMenuFileLines (\@lines,
       $separator);"

       "$line_empty = Bootloader::Core->MenuFileLineEmpty ($line);"

       "($lines_ref, $com_bef) Bootloader::Core->ProcessSingleMenuFileLine
       ($lines, $com_bef, $separator);"

       "$lines_ref = Bootloader::Core->CreateMenuFileLines (\@parsed_lines,
       $separator);"

       "$line = Bootloader::Core->CreateSingleMenuFileLine ($key, $value,
       $separator);"

       "$empty = Bootloader::Core->HasEmptyValue ($key, $value);"

       "$obj_ref = Bootloader::Core->new ();"

       "files_list_ref = Bootloader::Core->ListMenuFiles ();"

       "$files_ref = Bootloader::Core->ReadFiles (\@file_names);"

       "$status = Bootloader::Core->WriteFiles (\%files, $suffix);"

       "$original_name = Bootloader::Core->Comment2OriginalName ($comment);"

       "$line_ref = Bootloader::Core->UpdateSectionNameLine ($name, \%line,
       $original_name);"

       "$original_name = Bootloader::Core->Comment2FormerFlavor ($comment);"

       "$sectin_info_ref = Bootloader::Core->Section2Info (\@section_lines);"

       "$label = Bootloader::Core->FixSectionName ($name, \@existing,
       $orig_name);"

       "$lines_ref = Bootloader::Core->Info2Section (\%section_info,
       @section_names);"

       "$glob_info = $Bootloader::Core->Global2Info (\@glob_lines,
       \@section_names);"

       "$lines_ref = Bootloader::Core->Info2Global (\%section_info,
       \@section_names);"

       "$sections_ref = Bootloader::Core->MarkInitialSection (\@sections,
       default);"

       "($global_ref, $sections_ref) Bootloader::Core->ParseMenuFileLines
       ($separator, \@start_keys, \@lines);"

       "$lines_ref = Bootloader::Core->PrepareMenuFileLines (\@sectinos,
       \%global, $indent, $separator);"

       "$status = Bootloader::Core->UpdateBootloader ();"

       "$status = Bootloader::Core->RunCommand ($command, $log_file);"

       "$mapping_ref = Bootloader::Core->GetDeviceMapping ();"

       "$status = Bootloader::Core->SetDeviceMapping (\%mapping_ref);"

       "$settings_ref = Bootloader::Core->GetSettings ();"

       "$status = Bootloader::Core->SetSettings (\%settings);"

       "$path = Bootloader::Core->ConcatPath ($path1, $path2);"

       "$crosses = Bootloader::Core->SymlinkCrossesDevice ($path);"

       "$resolved = Bootloader::Core->ResolveCrossDeviceSymlinks ($path);"

       "$canonical = Bootloader::Core->CanonicalPath ($path);"

       "$real = Bootloader::Core->RealFileName ($filename);"

       "Bootloader::Core->l_debug ($message);"

       "Bootloader::Core->l_milestone ($message);"

       "Bootloader::Core->l_warning ($message);"

       "Bootloader::Core->l_error ($message);"

       "$records_ref = Bootloader::Core->GetLogRecords ();"

       "Bootloader::Core->MangleSections (\@sections, \%global);"

DESCRIPTION
        "$res = Bootloader::Core->trim ($string);"
         Cut whitespace from front and back.

        "Bootloader::Core->l_debug ($message);"
         Writes a debug message to the system log buffer.

        "Bootloader::Core->l_milestone ($message);"
         Writes a milestone message to the system log buffer.

        "Bootloader::Core->l_warning ($message);"
         Writes a warning message to the system log buffer.

        "Bootloader::Core->l_error ($message);"
         Writes an error message to the system log buffer.

        "$members_ref = Bootloader::Core->MD2Members ($md_device);"
         Gets the list of partitions building an MD software RAID array. As
         argument it takes a MD device (string), returns a reference to a list
         of its members.

        "$md_dev = Bootloader::Core->Member2MD (string $md_member);"
         Gets the MD RAID device a specified disk belongs to. As argument, it
         takes a disk which is supposed to be a member of a RAID, returns the
         RAID device name.

        "$index = Bootloader::Core->IndexOfSection ($name, \@section_names);"
         Finds the section in the list. As arguments, takes the name of the
         section (string, eg. 'linux') and the list of section names (list
         reference, eg.  "['linux', 'failsafe']"). Returns index of the
         section (integer) or undef if the section was not found in the list.

        "($device, $path) = Bootloader::Core->SplitDevPath ($path);"
         Divides the absolute path to the mountpoint and path relative to the
         mountpoint, transforms the mountpoint to the device holding the
         filesystem. As argument it takes the path (string, eg.
         '/boot/grub/device.map'), returns two-entry-list (NOT a reference)
         containing the device and the relative path (eg. "('/dev/hda1',
         '/grub/device.map')")

        "$extended_part_dev = Bootloader::Core->GetExtendedPartition
       ($part_dev);"
         Takes a device name (string, eg. '/dev/sda7') and returns the device
         name of the extended partition on the same disk (string, eg.
         '/dev/sda3'). If no extended partition exists on that disk, returns
         undef.

        "$quoted = Bootloader::Core->Quote ($text, $when);"
         Puts a text to quotes. As arguments takes the text (string) and
         information when the text should be put into quotes (string, 'always'
         or 'blanks' to specify if the text should be put between quotes
         always or only if it contains at least one blank character. Returns
         the text put into the quotes (if wanted or needed) (string)

        "$unquoted = Bootloader::Core->Unquote ($text);"
         Removes leading and tailing quotes of a string. As argument takes a
         string, returns it unquoted.

        "$merged = Bootloader::Core->MergeDefined (@strings);"
         Merges the strings (those defined and non-empty). As arguments, it
         takes strings, returns them merged with one space character.

        "$section_ref = Bootloader::Core->FixSectionLineOrder (\@section_ref,
       \@preferred);"
         reorders the lines of the section. As arguments takes reference to
         lines of the section (each line represented as a hash reference), and
         a list of preferred keys.  Returns a reference to the reordered lines
         of a section. Lines having any of the preferred keys will be in the
         return value placed before the other ones. If there are multiple
         lines having a preferred key, they will be sorted according to the
         list of oreferred keys.

        "$sections_ref Bootloader::Core->SplitLinesToSections (\@lines,
       \@section_starts);"
         Splits the lines of the configuration file to particular sections As
         argument it takes a reference to a list of lines (each line
         represented as a hash) and a reference to a list of keys starting a
         new section.  Returns a reference of a list of sections, each
         represented as a list of lines. The first section is the global
         section of the bootloader (without

        "$lines_ref Bootloader::Core->MergeSectionsLines (\@sections,
       $indent);"
         merges the sections into one. Except all lines of the first section
         and the first lines of other sections, all lines are indented by the
         specified string. As arguments takes a list of sections (global
         section should be at the beginning of the list) and a string
         specifying the indentation. Returns a list of lines.  Each section is
         represented as a list of lines, line is represented as a hash.

        "$lines_ref Bootloader::Core->ProcessMenuFileLines (\@lines,
       $separator);"
         processes lines represented as strings and returns them represented
         as hashes (containing key, value, relevant comments). As argument, it
         takes a reference to the list of lines of the file containing the
         menu and separator between the key and value. Returns a reference to
         a list of hashed.

        "$line_empty = Bootloader::Core->MenuFileLineEmpty ($line);"
         checks if a line is empty (or contains the time stamp by the
         library), or contains some information (comment is treated as
         information here).  Takes the line as string, returns a scalar (1 if
         empty, 0 otherwise).

        "$allow_afterline_empty = Bootloader::Core->AllowCommentAfterText();"
         checks if bootloader configuration allow comments after text on line,
         returns a scalar (1 if true, 0 otherwise).

        "($lines_ref, $com_bef) Bootloader::Core->ProcessSingleMenuFileLine
       ($lines, $com_bef, $separator);"
         processes line represented as string and returns it represented as
         hashes (containing key, value, relevant comments). The list may be
         empty, contain one or more items. As argument, it takes a line (as
         string), comment from previous lines and separator between the key
         and value. Returns a reference to a list of hashed and a pending
         comment.

        "$lines_ref = Bootloader::Core->CreateMenuFileLines (\@parsed_lines,
       $separator);"
         Transforms the list of lines (hashes) to list of lines-string to
         save. As arguments it takes the list of lines represented as hashes
         and a string to separate the key ent the value. Returns a reference
         to a list of strings.

        "$line = Bootloader::Core->CreateSingleMenuFileLine ($key, $value,
       $separator);"
         Transforms a line (hash) to a string to save. As arguments it takes
         the the key, the value and a string to separate the key and the
         value. Returns a string.

        "$empty = Bootloader::Core->HasEmptyValue ($key, $value);"
         Checks if a value is empty and only the keyword is to be written to
         the configuration file. Takes the key and value, returns if only
         keyword is to be written to configuration file

        "$obj_ref = Bootloader::Core->new ($old);"
         Creates an instance of the Bootloader::Core class.  Optional
         parameter 'old' is object reference to former bootloader

        "files_list_ref = Bootloader::Core->ListMenuFiles ();"
         List configuration files which have to be changed if only the boot
         menu has changed.

        "$files_ref = Bootloader::Core->ReadFiles (\@file_names);"
         Actually reads the files from the disk. As argument, takes a
         reference to the list of file names, returns a hash, where key is
         file name and value a reference to the list of lines of the file.

        "$status = Bootloader::Core->WriteFiles (\%files, $suffix,
       $menu_only);"
         Writes the files to the disk. As arguments, it takes a reference to a
         hash, where key is file name and value a reference to the list of
         lines to write to the file, and a suffix.  Does not write the
         contents directly to the files, but $suffix is appended to the file
         names.  On success, returns defined value > 0, on fail, returns
         undef;

        "$original_name = Bootloader::Core->CompleteSection($section_info);"
         Fill missing required keys of section.

        "$original_name = Bootloader::Core->Comment2OriginalName
       ($section_ref,$comment);"
         Gets the aditional information of the section from the comment. As
         argument, takes reference to section and the comment.

        "$line_ref = Bootloader::Core->UpdateSectionNameLine ($section,
       \%line, $original_name);"
         Updates the 'section name line' so that it contains specified name
         and original name inside the comment. As arguments, takes the section
         reference (hash reference), the line (hash reference) and the
         original name (string). If original name is set to undef or empty
         string, it is not set in the comment. Returns the updated line
         reference.

        "$original_name = Bootloader::Core->Comment2RemovedDefault
       ($comment);"
         Gets 1 if comment contains info about removed default. This can
         happen when you remove default kernel (this can handle situation when
         changing kernele and old kernel is removed before installing new.

        "$line_ref = Bootloader::Core->CreateRemovedDefaultLine (\%line,);"
         Updates the 'default line' in globals so that it contains info about
         removed default line. Returns the updated line reference.

        "$sectin_info_ref = Bootloader::Core->Section2Info (\@section_lines);"
         Gets the information about the section. As argument, takes a
         reference to the list of lines building the section, returns a
         reference to a hash containing information about the section.

        "$label = Bootloader::Core->FixSectionName ($name, \@existing,
       $orig_name);"
         Update the section name so that it does not break anything (is in
         compliance with the bootloader and is unique). As arguments takes
         suggested section name and list of existing sections, returns updated
         section name and updates the list of section names as a side effect.
         Optional parameter orig_name is intended for internal use of the
         loader specific modules

        "$lines_ref = Bootloader::Core->Info2Section (\%section_info,
       \@section_names);"
         Takes the info about the section and uses it to construct the list of
         lines.  The info about the section also contains the original lines.
         As parameter, takes the section info (reference to a hash), returns
         the lines (a list of hashes).

        "$glob_info = $Bootloader::Core->Global2Info (\@glob_lines,
       \@section_names);"
         Gets the general information from the global section of the menu
         file. This information usually means the default section, graphical
         menu, timeout etc. As argument it takes a reference to the list of
         hashes representing lines of the section, returns a reference to a
         hash containing the important information.

        "$lines_ref = Bootloader::Core->Info2Global (\%section_info,
       \@section_names);"
         Takes the info about the global options and uses it to construct the
         list of lines.  The info about global option also contains the
         original lines.  As parameter, takes the section info (reference to a
         hash) and a list of sectino names, returns the lines (a list of
         hashes).

        "$sections_ref = Bootloader::Core->MarkInitialSection (\@sections,
       default);"
         Marks the section that is the initial one - the "Linux" section (even
         if it had been renamed). Uses several heuristics to get this one, one
         of them is the default section name. As arguments, takes the list of
         all sections and the default section name.  Returns the list of
         sections, where the default one has the "initial" key set.

        "($global_ref, $sections_ref) Bootloader::Core->ParseMenuFileLines
       ($separator, \@start_keys, \@lines);"
         Parses the lines of the file containing the bootloader menu, and
         creates the hashes representing the global settings and the sections.
         As arguments takes the separator of the key and value in the file,
         reference to a list starting a new section, and reference to the list
         of lines. Returns reference to a hash representing global options and
         reference to a list representing all sections.

        "$lines_ref = Bootloader::Core->PrepareMenuFileLines (\@sectinos,
       \%global, $indent, $separator);"
         takes the information about sections and creates the list of lines to
         be written to the file holding the boot menu. As arguments, takes
         reference to the list of sections, reference to hash holding global
         options, indentation of the lines inside sections and separator to be
         used between key and value in the configuration file. Returns the
         list of lines to be written to the configuration file.

        "$status = Bootloader::Core->UpdateBootloader ();"
         Updates the settings in the system. Backs original configuration
         files up and replaces them with the ones with the '.new' suffix. If
         other operations are needed to make the change effect, they must be
         done in the loader-specific package (eg. not needed for GRUB, run
         '/sbin/lilo' for LILO).  Returns undef on fail, defined nonzero value
         on success.

        "$status = Bootloader::Core->RunCommand ($command, $log_file);"
         Runs specified command. If log file is defined, its stdout and stderr
         are appended to the log file.  As arguments, takes the command end
         the log file name. Returns exit code of the command.

        "$mapping_ref = Bootloader::Core->GetDeviceMapping ();"
         Returns the device mapping as a reference to a hash, where key is the
         UNIX device identification and value is the firmware device
         identification.

        "$status = Bootloader::Core->SetDeviceMapping (\%mapping_ref);"
         Sets the device mapping. As argument takes a hash reference, where
         key is UNIX device identificatino and value is the firmware devide
         identification. Returns undef on fail, defined nonzero value
         otherwise.

        "$settings_ref = Bootloader::Core->GetSettings ();"
         returns the complete settings in a hash. Does not read the settings
         from the system, but returns internal structures.

        "$status = Bootloader::Core->SetSettings (\%settings);"
         Stores the settings in the given parameter to the internal
         structures. Does not touch the system.  Returns undef on fail,
         defined nonzero value on success.

        "$path = Bootloader::Core->ConcatPath ($path1, $path2);"
         Concatenates two path elements, added slash inbeteween if needed.
         Returns the two elements (arguments) concatenated.

        "$crosses = Bootloader::Core->SymlinkCrossesDevice ($path);"
         Checks if specified path is a symlink and if it links to path on a
         different device. As argument takes a path, returns 1 if path is a
         symlink and crosses device, 0 otherwise.

        "$resolved = Bootloader::Core->ResolveCrossDeviceSymlinks ($path);"
         Resolves all symlinks crossing device in the path. As argument, takes
         a path possibly with symlinks crossing device, returns the same path
         with these symlinks resolved.

        "$canonical = Bootloader::Core->CanonicalPath ($path);"
         Makes a "beautification" of the path given as an argument, returns
         the path.

        "$real = Bootloader::Core->RealFileName ($filename);"
         Gets the file name with all symlinks resolved and with some
         "beautification" (eg. removing duplicate slashes). Takes one argument
         - path, returns it after symlniks resolved.

        "Bootloader::Core->MangleSections (\@sections, \%global);"
         In this version does not do anything, is needed just to be overridden
         by the ZIPL implementation where global stuff is in sections

POD ERRORS
       Hey! The above document had some coding errors, which are explained
       below:

       Around line 1001:
           =cut found outside a pod block.  Skipping to next block.

       Around line 1013:
           =cut found outside a pod block.  Skipping to next block.

       Around line 1050:
           =cut found outside a pod block.  Skipping to next block.

       Around line 1064:
           =cut found outside a pod block.  Skipping to next block.

perl v5.12.1                      2010-02-26               Bootloader::Core(3)
 

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Quelle: http://www.trinler.net/de/service/doc/linux/man.html?command=Bootloader%3A%3ACore
Gedruckt am: 18.10.2017 03:53 GMT+0200 (2017-10-18T03:53:43+02:00)