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  • Committer: Teddy Hogeborn
  • Date: 2014-03-23 19:24:40 UTC
  • mto: (237.7.272 trunk)
  • mto: This revision was merged to the branch mainline in revision 311.
  • Revision ID: teddy@recompile.se-20140323192440-d71iiqxebsxf9u2v
Update GCC warning flags and function attributes to GCC 4.7.

* Makefile (WARN): Update to include almost all warning flags.
* plugin-runner.c (getplugin, add_to_char_array, add_argument,
                   add_environment, set_cloexec_flag,
                   print_out_password): Add attribute
                                        "warn_unused_result".
  (main/parse_opt): Bug fix: Add error checking to --global-env,
                    --env-for, --plugin-dir, and --config-file, and
                    make sure errno does not "leak" from unrelated
                    functions.
* plugins.d/mandos-client.c
  (fprintf_plus, debuggnutls, resolve_callback): Add "nonnull"
                                                 attribute.
  (incbuffer, add_server, init_gpgme): Add "nonnull" and
                                       "warn_unused_result"
                                       attributes.
  (pgp_packet_decrypt, init_gnutls_global): - '' -
  (init_gnutls_session start_mandos_communication, get_flags): - '' -
  (good_flags, good_interface, interface_is_up): - '' -
  (interface_is_running, runnable_hook): - '' -
  (avahi_loop_with_timeout, bring_up_interface): : - '' -
  (safer_gnutls_strerror): Add "warn_unused_result" attribute.
  (notdotentries): Set "nonnull", "pure", and "warn_unused_result"
                   attributes.
  (raise_privileges, raise_privileges_permanently, lower_privileges,
  lower_privileges_permanently): Set "warn_unused_result" attribute.
  (run_network_hooks): Exit child process if it fails to do anything
                       it needs to do.  Make explicit cast to double
                       when passing float value to asprintf().  Change
                       return type to void - all callers changed.
  (bring_up_interface): Move variables "sd", "ret_errno", and
                        "ret_setflags" to innermost scope.  Bug fix:
                        Fail if could not get interface flags also in
                        non-debug mode, and restore old errno
                        correctly.  Print message if could not raise
                        (or later lower) privileges.
  (take_down_interface): Bug fix: When failing because it could not
                         get interface flags, restore old errno
                         correctly.  Print message if it could not
                         raise (or later lower) privileges.
  (main): Complain if failed to raise or lower privileges.  Only run
          network hooks or lower privileges if raising privileges was
          successful.

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# This script should be installed as
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# "/usr/share/initramfs-tools/scripts/local-top/mandos" which will
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# eventually be "/scripts/local-top/mandos" in the initrd.img file.
 
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# "/usr/share/initramfs-tools/scripts/init-premount/mandos" which will
 
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# eventually be "/scripts/init-premount/mandos" in the initrd.img
 
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# file.
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# No initramfs pre-requirements; we must instead run BEFORE cryptroot.
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# This is not a problem, since cryptroot forces itself to run LAST.
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PREREQ=""
 
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PREREQ="udev"
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prereqs()
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{
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     echo "$PREREQ"
 
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    echo "$PREREQ"
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}
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case $1 in
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prereqs)
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     prereqs
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     exit 0
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     ;;
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esac
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test -w /conf/conf.d/cryptroot
 
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        prereqs
 
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        exit 0
 
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        ;;
 
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esac
 
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. /scripts/functions
 
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for param in `cat /proc/cmdline`; do
 
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    case "$param" in
 
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        ip=*) IPOPTS="${param#ip=}" ;;
 
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        mandos=*)
 
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            # Split option line on commas
 
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            old_ifs="$IFS"
 
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            IFS="$IFS,"
 
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            for mpar in ${param#mandos=}; do
 
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                IFS="$old_ifs"
 
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                case "$mpar" in
 
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                    off) exit 0 ;;
 
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                    connect) connect="" ;;
 
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                    connect:*) connect="${mpar#connect:}" ;;
 
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                    *) log_warning_msg "$0: Bad option ${mpar}" ;;
 
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                esac
 
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            done
 
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            unset mpar
 
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            IFS="$old_ifs"
 
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            unset old_ifs
 
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            ;;
 
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    esac
 
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done
 
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unset param
 
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chmod a=rwxt /tmp
 
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test -r /conf/conf.d/cryptroot
 
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test -w /conf/conf.d
 
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# Get DEVICE from /conf/initramfs.conf and other files
 
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. /conf/initramfs.conf
 
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for conf in /conf/conf.d/*; do
 
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    [ -f ${conf} ] && . ${conf}
 
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done
 
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if [ -e /conf/param.conf ]; then
 
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    . /conf/param.conf
 
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fi
 
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# Override DEVICE from sixth field of ip= kernel option, if passed
 
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case "$IPOPTS" in
 
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    *:*:*:*:*:*)                # At least six fields
 
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        # Remove the first five fields
 
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        device="${IPOPTS#*:*:*:*:*:}"
 
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        # Remove all fields except the first one
 
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        DEVICE="${device%%:*}"
 
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        ;;
 
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esac
 
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# Add device setting (if any) to plugin-runner.conf
 
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if [ "${DEVICE+set}" = set ]; then
 
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    # Did we get the device from an ip= option?
 
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    if [ "${device+set}" = set ]; then
 
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        # Let ip= option override local config; append:
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--interface=${DEVICE}
 
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EOF
 
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    else
 
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        # Prepend device setting so any later options would override:
 
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        sed -i -e \
 
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            '1i--options-for=mandos-client:--interface='"${DEVICE}" \
 
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            /conf/conf.d/mandos/plugin-runner.conf
 
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    fi
 
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fi
 
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unset device
 
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# If we are connecting directly, run "configure_networking" (from
 
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# /scripts/functions); it needs IPOPTS and DEVICE
 
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if [ "${connect+set}" = set ]; then
 
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    configure_networking
 
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    if [ -n "$connect" ]; then
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--connect=${connect}
 
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EOF
 
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    fi
 
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fi
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# Do not replace cryptroot file unless we need to.
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replace_cryptroot=no
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# Our keyscript
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mandos=/lib/mandos/plugin-runner
 
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test -x "$mandos"
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# parse /conf/conf.d/cryptroot.  Format:
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# target=sda2_crypt,source=/dev/sda2,key=none,keyscript=/foo/bar/baz