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name : nfsconvert
#!/usr/libexec/platform-python
"""
Read in the deprecated /etc/sysconfig/nfs file and
set the corresponding values in nfs.conf
"""

from __future__ import print_function
import os
import sys
import getopt
import subprocess
import configparser

CONF_NFS = '/etc/nfs.conf'
CONF_IDMAP = '/etc/idmapd.conf'
SYSCONF_NFS = '/etc/sysconfig/nfs'
SYSCONF_BACKUP = ".rpmsave"
CONF_TOOL = '/usr/sbin/nfsconf'

# options for nfsd found in RPCNFSDARGS
OPTS_NFSD = 'dH:p:rR:N:V:stTuUG:L:'
LONG_NFSD = ['debug', 'host=', 'port=', 'rdma=', 'nfs-version=', 'no-nfs-version=',
             'tcp', 'no-tcp', 'udp', 'no-udp', 'grace-time=', 'lease-time=']
CONV_NFSD = {'-d': (CONF_NFS, 'nfsd', 'debug', 'all'),
             '-H': (CONF_NFS, 'nfsd', 'host', ','),
             '-p': (CONF_NFS, 'nfsd', 'port', '$1'),
             '-r': (CONF_NFS, 'nfsd', 'rdma', 'nfsrdma'),
             '-R': (CONF_NFS, 'nfsd', 'rdma', '$1'),
             '-N': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
             '-V': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
             '-t': (CONF_NFS, 'nfsd', 'tcp', '1'),
             '-T': (CONF_NFS, 'nfsd', 'tcp', '0'),
             '-u': (CONF_NFS, 'nfsd', 'udp', '1'),
             '-U': (CONF_NFS, 'nfsd', 'udp', '0'),
             '-G': (CONF_NFS, 'nfsd', 'grace-time', '$1'),
             '-L': (CONF_NFS, 'nfsd', 'lease-time', '$1'),
             '$1': (CONF_NFS, 'nfsd', 'threads', '$1'),
             '--debug': (CONF_NFS, 'nfsd', 'debug', 'all'),
             '--host': (CONF_NFS, 'nfsd', 'host', ','),
             '--port': (CONF_NFS, 'nfsd', 'port', '$1'),
             '--rdma': (CONF_NFS, 'nfsd', 'rdma', '$1'),
             '--no-nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
             '--nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
             '--tcp': (CONF_NFS, 'nfsd', 'tcp', '1'),
             '--no-tcp': (CONF_NFS, 'nfsd', 'tcp', '0'),
             '--udp': (CONF_NFS, 'nfsd', 'udp', '1'),
             '--no-udp': (CONF_NFS, 'nfsd', 'udp', '0'),
             '--grace-time': (CONF_NFS, 'nfsd', 'grace-time', '$1'),
             '--lease-time': (CONF_NFS, 'nfsd', 'lease-time', '$1'),
            }

# options for mountd found in RPCMOUNTDOPTS
OPTS_MOUNTD = 'go:d:H:p:N:nrs:t:V:'
LONG_MOUNTD = ['descriptors=', 'debug=', 'nfs-version=', 'no-nfs-version=',
               'port=', 'no-tcp', 'ha-callout=', 'state-directory-path=',
               'num-threads=', 'reverse-lookup', 'manage-gids', 'no-udp']

CONV_MOUNTD = {'-g': (CONF_NFS, 'mountd', 'manage-gids', '1'),
               '-o': (CONF_NFS, 'mountd', 'descriptors', '$1'),
               '-d': (CONF_NFS, 'mountd', 'debug', '$1'),
               '-H': (CONF_NFS, 'mountd', 'ha-callout', '$1'),
               '-p': (CONF_NFS, 'mountd', 'port', '$1'),
               '-N': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
               '-V': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
               '-n': (CONF_NFS, 'nfsd', 'tcp', '0'),
               '-s': (CONF_NFS, 'mountd', 'stat-directory-path', '$1'),
               '-t': (CONF_NFS, 'mountd', 'threads', '$1'),
               '-r': (CONF_NFS, 'mountd', 'reverse-lookup', '1'),
               '-u': (CONF_NFS, 'nfsd', 'udp', '0'),
               '--manage-gids': (CONF_NFS, 'mountd', 'manage-gids', '1'),
               '--descriptors': (CONF_NFS, 'mountd', 'descriptors', '$1'),
               '--debug': (CONF_NFS, 'mountd', 'debug', '$1'),
               '--ha-callout': (CONF_NFS, 'mountd', 'ha-callout', '$1'),
               '--port': (CONF_NFS, 'mountd', 'port', '$1'),
               '--nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
               '--no-nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
               '--no-tcp': (CONF_NFS, 'nfsd', 'tcp', '0'),
               '--state-directory-path': (CONF_NFS, 'mountd', 'state-directory-path', '$1'),
               '--num-threads': (CONF_NFS, 'mountd', 'threads', '$1'),
               '--reverse-lookup': (CONF_NFS, 'mountd', 'reverse-lookup', '1'),
               '--no-udp': (CONF_NFS, 'nfsd', 'udp', '0'),
              }

# options for statd found in STATDARG
OPTS_STATD = 'o:p:T:U:n:P:H:L'
LONG_STATD = ['outgoing-port=', 'port=', 'name=', 'state-directory-path=',
              'ha-callout=', 'nlm-port=', 'nlm-udp-port=', 'no-notify']
CONV_STATD = {'-o': (CONF_NFS, 'statd', 'outgoing-port', '$1'),
              '-p': (CONF_NFS, 'statd', 'port', '$1'),
              '-T': (CONF_NFS, 'lockd', 'port', '$1'),
              '-U': (CONF_NFS, 'lockd', 'udp-port', '$1'),
              '-n': (CONF_NFS, 'statd', 'name', '$1'),
              '-P': (CONF_NFS, 'statd', 'state-directory-path', '$1'),
              '-H': (CONF_NFS, 'statd', 'ha-callout', '$1'),
              '-L': (CONF_NFS, 'statd', 'no-notify', '1'),
              '--outgoing-port': (CONF_NFS, 'statd', 'outgoing-port', '$1'),
              '--port': (CONF_NFS, 'statd', 'port', '$1'),
              '--name': (CONF_NFS, 'statd', 'name', '$1'),
              '--state-directory-path': (CONF_NFS, 'statd', 'state-directory-path', '$1'),
              '--ha-callout': (CONF_NFS, 'statd', 'ha-callout', '$1'),
              '--nlm-port': (CONF_NFS, 'lockd', 'port', '$1'),
              '--nlm-udp-port': (CONF_NFS, 'lockd', 'udp-port', '$1'),
              '--no-notify': (CONF_NFS, 'statd', 'no-notify', '1'),
             }

# options for sm-notify found in SMNOTIFYARGS
OPTS_SMNOTIFY = 'dm:np:v:P:f'
CONV_SMNOTIFY = {'-d': (CONF_NFS, 'sm-notify', 'debug', 'all'),
                 '-m': (CONF_NFS, 'sm-notify', 'retry-time', '$1'),
                 '-n': (CONF_NFS, 'sm-notify', 'update-state', '1'),
                 '-p': (CONF_NFS, 'sm-notify', 'outgoing-port', '$1'),
                 '-v': (CONF_NFS, 'sm-notify', 'outgoing-addr', '$1'),
                 '-f': (CONF_NFS, 'sm-notify', 'force', '1'),
                 '-P': (CONF_NFS, 'statd', 'state-directory-path', '$1'),
                }

# options for idmapd found in RPCIDMAPDARGS
OPTS_IDMAPD = 'vp:CS'
CONV_IDMAPD = {'-v': (CONF_IDMAP, 'general', 'verbosity', '+'),
               '-p': (CONF_NFS, 'general', 'pipefs-directory', '$1'),
               '-C': (CONF_IDMAP, 'general', 'client-only', '1'),
               '-S': (CONF_IDMAP, 'general', 'server-only', '1'),
              }

# options for gssd found in RPCGSSDARGS
OPTS_GSSD = 'Mnvrp:k:d:t:T:R:lD'
CONV_GSSD = {'-M': (CONF_NFS, 'gssd', 'use-memcache', '1'),
             '-n': (CONF_NFS, 'gssd', 'root_uses_machine_creds', '0'),
             '-v': (CONF_NFS, 'gssd', 'verbosity', '+'),
             '-r': (CONF_NFS, 'gssd', 'rpc-verbosity', '+'),
             '-p': (CONF_NFS, 'general', 'pipefs-directory', '$1'),
             '-k': (CONF_NFS, 'gssd', 'keytab-file', '$1'),
             '-d': (CONF_NFS, 'gssd', 'cred-cache-directory', '$1'),
             '-t': (CONF_NFS, 'gssd', 'context-timeout', '$1'),
             '-T': (CONF_NFS, 'gssd', 'rpc-timeout', '$1'),
             '-R': (CONF_NFS, 'gssd', 'preferred-realm', '$1'),
             '-l': (CONF_NFS, 'gssd', 'limit-to-legacy-enctypes', '0'),
             '-D': (CONF_NFS, 'gssd', 'avoid-dns', '0'),
            }

# options for blkmapd found in BLKMAPDARGS
OPTS_BLKMAPD = ''
CONV_BLKMAPD = {}

# meta list of all the getopt lists
GETOPT_MAPS = [('RPCNFSDARGS', OPTS_NFSD, LONG_NFSD, CONV_NFSD),
               ('RPCMOUNTDOPTS', OPTS_MOUNTD, LONG_MOUNTD, CONV_MOUNTD),
               ('STATDARG', OPTS_STATD, LONG_STATD, CONV_STATD),
               ('STATDARGS', OPTS_STATD, LONG_STATD, CONV_STATD),
               ('SMNOTIFYARGS', OPTS_SMNOTIFY, [], CONV_SMNOTIFY),
               ('RPCIDMAPDARGS', OPTS_IDMAPD, [], CONV_IDMAPD),
               ('RPCGSSDARGS', OPTS_GSSD, [], CONV_GSSD),
               ('BLKMAPDARGS', OPTS_BLKMAPD, [], CONV_BLKMAPD),
              ]

# any fixups we need to apply first
GETOPT_FIXUP = {'RPCNFSDARGS': ('--rdma', '--rdma=nfsrdma'),
               }

# map for all of the single option values
VALUE_MAPS = {'LOCKD_TCPPORT': (CONF_NFS, 'lockd', 'port', '$1'),
              'LOCKD_UDPPORT': (CONF_NFS, 'lockd', 'udp-port', '$1'),
              'RPCNFSDCOUNT': (CONF_NFS, 'nfsd', 'threads', '$1'),
              'NFSD_V4_GRACE': (CONF_NFS, 'nfsd', 'grace-time', '$1'),
              'NFSD_V4_LEASE': (CONF_NFS, 'nfsd', 'lease-time', '$1'),
              'MOUNTD_PORT': (CONF_NFS, 'mountd', 'port', '$1'),
              'STATD_PORT': (CONF_NFS, 'statd', 'port', '$1'),
              'STATD_OUTGOING_PORT': (CONF_NFS, 'statd', 'outgoing-port', '$1'),
              'STATD_HA_CALLOUT': (CONF_NFS, 'statd', 'ha-callout', '$1'),
              'GSS_USE_PROXY': (CONF_NFS, 'gssd', 'use-gss-proxy', '$1')
             }

def eprint(*args, **kwargs):
    """ Print error to stderr """
    print(*args, file=sys.stderr, **kwargs)

def makesub(param, value):
    """ Variable substitution """
    return param.replace('$1', value)

def set_value(value, entry):
    """ Set a configuration value by running nfsconf tool"""
    cfile, section, tag, param = entry

    tag = makesub(tag, value)
    param = makesub(param, value)
    if param == '+':
        param = value
    if param == ',':
        param = value
    args = [CONF_TOOL, "--file", cfile, "--set", section, tag, param]

    try:
        subprocess.check_output(args, stderr=subprocess.STDOUT)
    except subprocess.CalledProcessError as e:
        print("Error running nfs-conf tool:\n %s" % (e.output.decode()))
        print("Args: %s\n" % args)
        raise Exception

def convert_getopt(optname, options, optstring, longopts, conversions):
    """ Parse option string into seperate config items

        Take a getopt string and a table of conversions
        parse it all and spit out the converted config

        Keyword arguments:
        options -- the argv string to convert
        optstring --  getopt format option list
        conversions -- table of translations
    """
    optcount = 0
    try:
        args = options.strip('\"').split()
        if optname in GETOPT_FIXUP:
            (k, v) = GETOPT_FIXUP[optname]
            for i, opt in enumerate(args):
                if opt == k:
                    args[i] = v
                elif opt == '--':
                    break
        optlist, optargs = getopt.gnu_getopt(args, optstring, longopts=longopts)
    except getopt.GetoptError as err:
        eprint(err)
        raise Exception

    setlist = {}
    for (k, v) in optlist:
        if k in conversions:
            # it's already been set once
            param = conversions[k][3]
            tag = k + makesub(conversions[k][2], v)
            if tag in setlist:
                value = setlist[tag][0]
                # is it a cummulative entry
                if param == '+':
                    value = str(int(value) + 1)
                if param == ',':
                    value += "," + v
            else:
                if param == '+':
                    value = "1"
                elif param == ',':
                    value = v
                else:
                    value = v
            setlist[tag] = (value, conversions[k])
        else:
            if v:
                eprint("Ignoring unrecognised option %s=%s in %s" % (k, v, optname))
            else:
                eprint("Ignoring unrecognised option %s in %s" % (k, optname))


    for v, c in setlist.values():
        try:
            set_value(v, c)
            optcount += 1
        except Exception:
            raise

    i = 1
    for o in optargs:
        opname = '$' + str(i)
        if opname in conversions:
            try:
                set_value(o, conversions[opname])
                optcount += 1
            except Exception:
                raise
        else:
            eprint("Unrecognised trailing arguments")
            raise Exception
        i += 1

    return optcount

def map_values():
    """ Main function """
    mapcount = 0

    # Lets load the old config
    with open(SYSCONF_NFS) as cfile:
        file_content = '[sysconf]\n' + cfile.read()
    sysconfig = configparser.RawConfigParser()
    sysconfig.read_string(file_content)

    # Map all the getopt option lists
    for (name, opts, lopts, conv) in GETOPT_MAPS:
        if name in sysconfig['sysconf']:
            try:
                mapcount += convert_getopt(name, sysconfig['sysconf'][name], opts,
                                           lopts, conv)
            except Exception:
                eprint("Error whilst converting %s to nfsconf options." % (name))
                raise

    # Map the single value options
    for name, opts in VALUE_MAPS.items():
        if name in sysconfig['sysconf']:
            try:
                value = sysconfig['sysconf'][name]
                set_value(value.strip('\"'), opts)
                mapcount += 1
            except Exception:
                raise

    # All went well, move aside the old file
    # but dont bother if there were no changes and
    # an old config file already exists
    backupfile = SYSCONF_NFS + SYSCONF_BACKUP
    if mapcount > 0 or not os.path.exists(backupfile):
        try:
            os.replace(SYSCONF_NFS, backupfile)
        except OSError as err:
            eprint("Error moving old config %s: %s" % (SYSCONF_NFS, err))
            raise

# Main routine
try:
    map_values()
except Exception as e:
    eprint(e)
    eprint("Conversion failed. Please correct the error and try again.")
    exit(1)

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Web Design for Beginners

Web Design for Beginners

in Design
Created by Linda Anderson
+2
5 Users are following this upcoming course
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Course
Web Design for Beginners

Web Design for Beginners
in Design
Linda Anderson
Linda Anderson
4.25
1:45 Hours
8 Jul 2021
₹11.80

What you will learn?

Create any website layout you can imagine

Support any device size with Responsive (mobile-friendly) Design

Add tasteful animations and effects with CSS3

Course description

You can launch a new career in web development today by learning HTML & CSS. You don't need a computer science degree or expensive software. All you need is a computer, a bit of time, a lot of determination, and a teacher you trust. I've taught HTML and CSS to countless coworkers and held training sessions for fortune 100 companies. I am that teacher you can trust. 


Don't limit yourself by creating websites with some cheesy “site-builder" tool. This course teaches you how to take 100% control over your webpages by using the same concepts that every professional website is created with.


This course does not assume any prior experience. We start at square one and learn together bit by bit. By the end of the course you will have created (by hand) a website that looks great on phones, tablets, laptops, and desktops alike.


In the summer of 2020 the course has received a new section where we push our website live up onto the web using the free GitHub Pages service; this means you'll be able to share a link to what you've created with your friends, family, colleagues and the world!

Requirements

No prerequisite knowledge required

No special software required

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Course specifications

Publish Date:
15 Mar 2023 | 09:30
Duration:
3:30 Hours
Sections:
6
Parts:
85
Price:
₹10
Progress:
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