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author	Stefan Metzmacher <metze@samba.org>	2014-05-06 11:11:38 +0200
committer	Jeremy Allison <jra@samba.org>	2014-05-22 21:05:14 +0200
commit	417489a214757055ab95c98180c5ce960bdbe632 (patch)
tree	8a74cb828764d983830a360dfd997739931914f3 /python/wscript_build
parent	19fb729188304e5817a694da9e5a4db5d1dfcb51 (diff)

tdb/test: add a "skip()" macro.

Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Michael Adam <obnox@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>

Diffstat (limited to 'python/wscript_build')

0 files changed, 0 insertions, 0 deletions

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#
# iutil.py - generic install utility functions
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
# Red Hat, Inc.  All rights reserved.
#
# This program 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.
#
# This program 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/>.
#
# Author(s): Erik Troan <ewt@redhat.com>
#

import os, string, stat
import os.path
from errno import *
import rhpl
import warnings
import subprocess
from flags import flags

import logging
log = logging.getLogger("anaconda")

## Run an external program and redirect the output to a file.
# @param command The command to run.
# @param argv A list of arguments.
# @param stdin The file descriptor to read stdin from.
# @param stdout The file descriptor to redirect stdout to.
# @param stderr The file descriptor to redirect stderr to.
# @param searchPath Should command be searched for in $PATH?
# @param root The directory to chroot to before running command.
# @return The return code of command.
def execWithRedirect(command, argv, stdin = 0, stdout = 1, stderr = 2,
                     searchPath = 0, root = '/'):
    def chroot ():
        os.chroot(root)

        if not searchPath and not os.access (command, os.X_OK):
            raise RuntimeError, command + " can not be run"

    argv = list(argv)
    if type(stdin) == type("string"):
        if os.access(stdin, os.R_OK):
            stdin = open(stdin)
        else:
            stdin = 0
    if type(stdout) == type("string"):
        stdout = open(stdout, "w")
    if type(stderr) == type("string"):
        stderr = open(stderr, "w")

    if stdout is not None and type(stdout) != int:
        stdout.write("Running... %s\n" %([command] + argv,))

    try:
        proc = subprocess.Popen([command] + argv, stdin=stdin, stdout=stdout,
                                stderr=stderr, preexec_fn=chroot, cwd=root)
        ret = proc.wait()
    except OSError, (errno, msg):
        errstr = "Error running %s: %s" % (command, msg)
        log.error (errstr)
        raise RuntimeError, errstr

    return ret

## Run an external program and capture standard out.
# @param command The command to run.
# @param argv A list of arguments.
# @param stdin The file descriptor to read stdin from.
# @param stderr The file descriptor to redirect stderr to.
# @param root The directory to chroot to before running command.
# @return The output of command from stdout.
def execWithCapture(command, argv, stdin = 0, stderr = 2, root='/'):
    def chroot():
        os.chroot(root)

    argv = list(argv)
    if type(stdin) == type("string"):
        if os.access(stdin, os.R_OK):
            stdin = open(stdin)
        else:
            stdin = 0
    if type(stderr) == type("string"):
        stderr = open(stderr, "w")

    try:
        pipe = subprocess.Popen([command] + argv, stdin=stdin,
                                stdout=subprocess.PIPE,
                                stderr=subprocess.STDOUT,
                                preexec_fn=chroot, cwd=root)
    except OSError, (errno, msg):
        log.error ("Error running " + command + ": " + msg)
        raise RuntimeError, "Error running " + command + ": " + msg

    rc = pipe.stdout.read()
    pipe.wait()
    return rc

def execWithPulseProgress(command, argv, stdin = 0, stdout = 1, stderr = 2,
                          progress = None, root = '/'):
    def chroot():
        os.chroot(root)

    argv = list(argv)
    if type(stdin) == type("string"):
        if os.access(stdin, os.R_OK):
            stdin = open(stdin)
        else:
            stdin = 0
    if type(stdout) == type("string"):
        stdout = open(stdout, "w")
    if type(stderr) == type("string"):
        stderr = open(stderr, "w")
    if stdout is not None and type(stdout) != int:
        stdout.write("Running... %s\n" %([command] + argv,))

    p = os.pipe()
    childpid = os.fork()
    if not childpid:
        os.close(p[0])
        os.dup2(p[1], 1)
        os.dup2(stderr.fileno(), 2)
        os.dup2(stdin, 0)
        os.close(stdin)
        os.close(p[1])
        stderr.close()

        os.execvp(command, [command] + argv)
        os._exit(1)

    os.close(p[1])

    while 1:
        try:
            s = os.read(p[0], 1)
        except OSError, args:
            (num, str) = args
            if (num != 4):
                raise IOError, args

        stdout.write(s)
        if progress: progress.pulse()

        if len(s) < 1:
            break

    try:
        (pid, status) = os.waitpid(childpid, 0)
    except OSError, (num, msg):
        log.critical("exception from waitpid: %s %s" %(num, msg))

    progress and progress.pop()

    # *shrug*  no clue why this would happen, but hope that things are fine
    if status is None:
        return 0

    if os.WIFEXITED(status):
        return os.WEXITSTATUS(status)

    return 1

## Run a shell.
def execConsole():
    try:
        proc = subprocess.Popen(["/bin/sh"])
        proc.wait()
    except OSError, (errno, msg):
        raise RuntimeError, "Error running /bin/sh: " + msg

## Get the size of a directory and all its subdirectories.
# @param dir The name of the directory to find the size of.
# @return The size of the directory in kilobytes.
def getDirSize(dir):
    def getSubdirSize(dir):
	# returns size in bytes
        mydev = os.lstat(dir)[stat.ST_DEV]

        dsize = 0
        for f in os.listdir(dir):
	    curpath = '%s/%s' % (dir, f)
	    sinfo = os.lstat(curpath)
            if stat.S_ISDIR(sinfo[stat.ST_MODE]):
                if mydev == sinfo[stat.ST_DEV]:
                    dsize += getSubdirSize(curpath)
            elif stat.S_ISREG(sinfo[stat.ST_MODE]):
                dsize += sinfo[stat.ST_SIZE]
            else:
                pass

        return dsize
    return getSubdirSize(dir)/1024

## Get the amount of RAM not used by /tmp.
# @return The amount of available memory in kilobytes.
def memAvailable():
    tram = memInstalled()

    ramused = getDirSize("/tmp")
    return tram - ramused

## Get the amount of RAM installed in the machine.
# @return The amount of installed memory in kilobytes.
def memInstalled():
    f = open("/proc/meminfo", "r")
    lines = f.readlines()
    f.close()

    for l in lines:
        if l.startswith("MemTotal:"):
            fields = string.split(l)
            mem = fields[1]
            break

    return int(mem)

## Suggest the size of the swap partition that will be created.
# @param quiet Should size information be logged?
# @return A tuple of the minimum and maximum swap size, in megabytes.
def swapSuggestion(quiet=0):
    mem = memInstalled()/1024
    mem = ((mem/16)+1)*16
    if not quiet:
	log.info("Detected %sM of memory", mem)
	
    if mem <= 256:
        minswap = 256
        maxswap = 512
    else:
        if mem > 2000:
            minswap = 1000
            maxswap = 2000 + mem
        else:
            minswap = mem
            maxswap = 2*mem

    if not quiet:
	log.info("Swap attempt of %sM to %sM", minswap, maxswap)

    return (minswap, maxswap)

## Create a directory path.  Don't fail if the directory already exists.
# @param dir The directory path to create.
def mkdirChain(dir):
    try:
        os.makedirs(dir, 0755)
    except OSError, (errno, msg):
        try:
            if errno == EEXIST and stat.S_ISDIR(os.stat(dir).st_mode):
                return
        except:
            pass

        log.error("could not create directory %s: %s" % (dir, msg))

## Get the total amount of swap memory.
# @return The total amount of swap memory in kilobytes, or 0 if unknown.
def swapAmount():
    f = open("/proc/meminfo", "r")
    lines = f.readlines()
    f.close()

    for l in lines:
        if l.startswith("SwapTotal:"):
            fields = string.split(l)
            return int(fields[1])
    return 0

## Copy a device node.
# Copies a device node by looking at the device type, major and minor device
# numbers, and doing a mknod on the new device name.
#
# @param src The name of the source device node.
# @param dest The name of the new device node to create.
def copyDeviceNode(src, dest):
    filestat = os.lstat(src)
    mode = filestat[stat.ST_MODE]
    if stat.S_ISBLK(mode):
        type = stat.S_IFBLK
    elif stat.S_ISCHR(mode):
        type = stat.S_IFCHR
    else:
        # XXX should we just fallback to copying normally?
        raise RuntimeError, "Tried to copy %s which isn't a device node" % (src,)

    os.mknod(dest, mode | type, filestat.st_rdev)

## Determine if the hardware supports iSeries storage devices.
# @return 1 if so, 0 otherwise.
def hasiSeriesNativeStorage():
    # this is disgusting and I feel very dirty
    if not isPPC():
        return

    f = open("/proc/modules", "r")
    lines = f.readlines()
    f.close()

    for line in lines:
        if line.startswith("ibmsis"):
            return 1
        if line.startswith("ipr"):
            return 1

    return 0

## Get the PPC machine variety type.
# @return The PPC machine type, or 0 if not PPC.
def getPPCMachine():
    if not isPPC():
        return 0

    ppcMachine = None
    machine = None
    platform = None

    # ppc machine hash
    ppcType = { 'Mac'      : 'PMac',
                'Book'     : 'PMac',
                'CHRP IBM' : 'pSeries',
                'Pegasos'  : 'Pegasos',
                'Efika'    : 'Efika',
                'iSeries'  : 'iSeries',
                'pSeries'  : 'pSeries',
                'PReP'     : 'PReP',
                'CHRP'     : 'pSeries',
                'Amiga'    : 'APUS',
                'Gemini'   : 'Gemini',
                'Shiner'   : 'ANS',
                'BRIQ'     : 'BRIQ',
                'Teron'    : 'Teron',
                'AmigaOne' : 'Teron',
                'Maple'    : 'pSeries',
                'Cell'     : 'pSeries',
                'Momentum' : 'pSeries',
                'PS3'      : 'PS3'
                }

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()
    for line in lines:
        if line.find('machine') != -1:
            machine = line.split(':')[1]
        elif line.find('platform') != -1:
            platform = line.split(':')[1]

    for part in (machine, platform):
        if ppcMachine is None and part is not None:
            for type in ppcType.items():
                if part.find(type[0]) != -1:
                    ppcMachine = type[1]

    if ppcMachine is None:
        log.warning("Unable to find PowerPC machine type")
    elif ppcMachine == 0:
        log.warning("Unknown PowerPC machine type: %s" %(ppcMachine,))

    return ppcMachine

## Get the powermac machine ID.
# @return The powermac machine id, or 0 if not PPC.
def getPPCMacID():
    machine = None

    if not isPPC():
        return 0
    if getPPCMachine() != "PMac":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()
    for line in lines:
      if line.find('machine') != -1:
        machine = line.split(':')[1]
        machine = machine.strip()
        return machine

    log.warning("No Power Mac machine id")
    return 0

## Get the powermac generation.
# @return The powermac generation, or 0 if not powermac.
def getPPCMacGen():
    # XXX: should NuBus be here?
    pmacGen = ['OldWorld', 'NewWorld', 'NuBus']

    if not isPPC():
        return 0
    if getPPCMachine() != "PMac":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()
    gen = None
    for line in lines:
      if line.find('pmac-generation') != -1:
        gen = line.split(':')[1]
        break

    if gen is None:
        log.warning("Unable to find pmac-generation")

    for type in pmacGen:
      if gen.find(type) != -1:
          return type

    log.warning("Unknown Power Mac generation: %s" %(gen,))
    return 0

## Determine if the hardware is an iBook or PowerBook
# @return 1 if so, 0 otherwise.
def getPPCMacBook():
    if not isPPC():
        return 0
    if getPPCMachine() != "PMac":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()

    for line in lines:
      if not string.find(string.lower(line), 'book') == -1:
        return 1
    return 0

cell = None
## Determine if the hardware is the Cell platform.
# @return True if so, False otherwise.
def isCell():
    global cell
    if cell is not None:
        return cell

    cell = False
    if not isPPC():
        return cell

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()

    for line in lines:
      if not string.find(line, 'Cell') == -1:
          cell = True

    return cell

mactel = None
## Determine if the hardware is an Intel-based Apple Mac.
# @return True if so, False otherwise.
def isMactel():
    global mactel
    if mactel is not None:
        return mactel

    if not isX86():
        mactel = False
    elif not os.path.exists("/usr/sbin/dmidecode"):
        mactel = False
    else:
        buf = execWithCapture("/usr/sbin/dmidecode",
                              ["dmidecode", "-s", "system-manufacturer"])
        if buf.lower().find("apple") != -1:
            mactel = True
        else:
            mactel = False
    return mactel

efi = None
## Determine if the hardware supports EFI.
# @return True if so, False otherwise.
def isEfi():
    global efi
    if efi is not None:
        return efi

    efi = False
    if isX86():
        # XXX need to make sure efivars is loaded...
        if os.path.exists("/sys/firmware/efi"):
            efi = True

    return efi

## Generate the /etc/rpm/platform and /etc/rpm/macros files.
# @param root The root of the filesystem to create the files in.
def writeRpmPlatform(root="/"):
    import rhpl.arch

    if flags.test:
        return


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