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proc/17369/root/usr/bin/_[ Not.Writable ]

File://proc/17369/root/usr/bin/abrt-action-check-oops-for-hw-error

#!/usr/bin/python -u

import sys
import os
import locale
import gettext
import hashlib
import re

GETTEXT_PROGNAME = "abrt"

_ = gettext.lgettext

def file_has_string(filename, string):
    try:
        f = open(filename, "r")
    except IOError as e:
        #print e
        return False
    for line in f:
        if string in line:
            f.close()
            return True
    f.close()
    return False


def tail_with_search(filename, string, maxlen):
    try:
        f = open(filename, "r")
    except IOError as e:
        #print e
        return []
    l = []
    for line in f:
        if string in line:
            l.append(line)
            if len(l) > maxlen:
                del l[0]
    f.close()
    return l


def open_or_die(filename, mode):
    try:
        f = open(filename, mode)
    except IOError as e:
        sys.stderr.write(str(e) + "\n")
        sys.exit(1)
    return f


if __name__ == "__main__":
    try:
        locale.setlocale(locale.LC_ALL, "")
    except locale.Error:
        os.environ['LC_ALL'] = 'C'
        locale.setlocale(locale.LC_ALL, "")

    # Defeat "AttributeError: 'module' object has no attribute 'nl_langinfo'"
    try:
        gettext.bind_textdomain_codeset(GETTEXT_PROGNAME,
                                        locale.nl_langinfo(locale.CODESET))
    except AttributeError:
        pass

    gettext.bindtextdomain(GETTEXT_PROGNAME, '/usr/share/locale')
    gettext.textdomain(GETTEXT_PROGNAME)

    #
    # So far we only look for Machine Check Exceptions here.
    #

    # See if MCEs were seen
    oops_mce = file_has_string("backtrace", "Machine check events logged");
    vmcore_mce = file_has_string("backtrace", "Machine Check Exception:");
    if not oops_mce and not vmcore_mce:
        sys.exit(0)
    #
    # There was an MCE. IOW: it's not a bug, it's a HW error.
    f = open_or_die("not-reportable", "w")
    f.write(_(
                "The kernel log indicates that hardware errors were detected.\n"
                "This is most likely not a software problem.\n"
    ))
    f.close()

    oops_hash = hashlib.sha1()
    with open("backtrace", "r") as btfile:
        for line in btfile:
            oops_hash.update(line)

    with open_or_die("uuid", "w") as f:
        f.write(oops_hash.hexdigest())

    with open_or_die("duphash", "w") as f:
        f.write(oops_hash.hexdigest())

    res = tail_with_search("dmesg", "Linux version", 1)
    if res:
        kernel = re.sub(r"^.*Linux version ([^ ]+) .*$", r"\1", res[0]);
        with open_or_die("kernel", "w") as krnlfile:
            krnlfile.write(kernel)

    # vmcore MCEs already have good backtrace element, nothing more to do
    if vmcore_mce:
        sys.exit(0)

    #
    # Did mcelog logged it to /var/log/mcelog
    # (RHEL6 by default does this)?
    if os.path.exists("/var/log/mcelog"):
        f = open_or_die("backtrace", "w")
        f.write("The kernel log indicates that hardware errors were detected.\n")
        f.write("/var/log/mcelog file may have more information.\n")
        f.write("The last 20 lines of /var/log/mcelog are:\n")
        f.write("=========================================\n")
        #tail -n20 /var/log/mcelog 2>&1
        l = tail_with_search("/var/log/mcelog", "", 20)
        for line in l:
            f.write(line)
        f.close()
        sys.exit(0)
    #
    # On RHEL7, mcelog is run so that its output ends up in syslog.
    # Do we see that?
    if file_has_string("/var/log/messages", "mcelog: Hardware event"):
        f = open_or_die("backtrace", "w")
        f.write("The kernel log indicates that hardware errors were detected.\n")
        f.write("System log may have more information.\n")
        f.write("The last 20 mcelog lines of system log are:\n")
        f.write("==========================================\n")
        #grep -Fi 'mcelog:' /var/log/messages | tail -n20 2>&1
        l = tail_with_search("/var/log/messages", "mcelog:", 20)
        for line in l:
            f.write(line)
        f.close()
        sys.exit(0)
    #
    # Apparently, there is no running mcelog daemon!
    # Let user know that he needs one.
    f = open_or_die("backtrace", "w")
    f.write("The kernel log indicates that hardware errors were detected.\n")
    f.write("The data was saved by kernel for processing by the mcelog tool.\n")
    f.write("However, neither /var/log/mcelog nor system log contain mcelog messages.\n")
    f.write("Most likely reason is that mcelog is not installed or not configured\n")
    f.write("to be started during boot.\n")
    f.write("Without this tool running, the binary data saved by kernel\n")
    f.write("is of limited usefulness.\n")
    f.write("(You can save this data anyway by running 'cat </dev/mcelog >FILE').\n")
    f.write("The recommended course of action is to install mcelog.\n")
    f.write("If another hardware error would occur, a user-readable description\n")
    f.write("of it will be saved in system log or /var/log/mcelog.\n")
    f.close()

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