scripts/generate-kernel-patch

   1 #!/bin/bash
   2
   3 ############################################################################
   4 #
   5 # Script for converting the SCST source tree as it exists in the Subversion
   6 # repository to a Linux kernel patch.
   7 #
   8 # Copyright (C) 2008 Bart Van Assche <bart.vanassche@gmail.com>
   9 #
  10 # This program is free software; you can redistribute it and/or
  11 # modify it under the terms of the GNU General Public License
  12 # as published by the Free Software Foundation, version 2
  13 # of the License.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18 # GNU General Public License for more details.
  19 #
  20 ############################################################################
  21
  22 ########################
  23 # Function definitions #
  24 ########################
  25
  26 function usage {
  27   echo "Usage: $0 [-m] [-q] <kernel version>."
  28 }
  29
  30 # Convert an existing patch.
  31 # $1: path of patch to be added.
  32 # $2: path in kernel tree of file to be patched.
  33 function add_patch {
  34   if [ ! -e "$1" ]; then
  35     echo "Error: could not find $1." >&2
  36     exit 1
  37   fi
  38
  39   sed -e "s:^--- [^ ]*:--- orig/linux-${kernel_version}/$2:" \
  40       -e "s:^+++ [^ ]*:+++ linux-${kernel_version}/$2:"      \
  41       < "$1"
  42 }
  43
  44 # Generate a patch for a file to be added to the kernel source tree, and strip
  45 # trailing whitespace from C source files while converting the file to patch
  46 # format.
  47 # $1: path of file to be added.
  48 # $2: path in kernel tree where file should be added.
  49 function add_file {
  50   local a b
  51
  52   if [ ! -e "$1" ]; then
  53     echo "Error: could not find $1." >&2
  54     exit 1
  55   fi
  56
  57   # Only include files that were not generated by the build process
  58   # -- skip *.mod.c.
  59   if [ "$1" = "${1%.mod.c}" -a "$1" ]; then
  60     cat <<EOF
  61 diff -uprN orig/linux-${kernel_version}/$2 linux-${kernel_version}/$2
  62 --- orig/linux-${kernel_version}/$2
  63 +++ linux-${kernel_version}/$2
  64 @@ -0,0 +1,$(wc -l "$1" | { read a b; echo $a; }) @@
  65 EOF
  66     if [ "${2%.[ch]}" != "$2" ]; then
  67       sed -e 's/^ \([^ ]*:\)$/\1/' -e 's/^/+/' < "$1"
  68     else
  69       sed -e 's/^/+/' < "$1"
  70     fi
  71   fi
  72 }
  73
  74
  75 #########################
  76 # Argument verification #
  77 #########################
  78
  79 mpt_scst="false"
  80 qla2x00t="false"
  81
  82 if [ ! -e scst -o ! -e iscsi-scst -o ! -e srpt ]; then
  83   echo "Please run this script from inside the SCST subversion source tree."
  84   exit 1
  85 fi
  86
  87 set -- $(/usr/bin/getopt mq "$@")
  88 while [ "$1" != "${1#-}" ]
  89 do
  90   case "$1" in
  91     '-m') mpt_scst="true"; shift;;
  92     '-q') qla2x00t="true"; shift;;
  93     '--') shift;;
  94     *)    usage; exit 1;;
  95   esac
  96 done
  97
  98 if [ $# != 1 ]; then
  99   usage
 100   exit 1
 101 fi
 102
 103
 104 ####################
 105 # Patch Generation #
 106 ####################
 107
 108 kernel_version="$1"
 109 kpatch=(                                                                \
 110   "scst/kernel/scst_exec_req_fifo-${kernel_version}.patch"              \
 111   "iscsi-scst/kernel/patches/put_page_callback-${kernel_version}.patch" \
 112 )
 113
 114 for p in "${kpatch[@]}"
 115 do
 116   if [ ! -e "$p" ]; then
 117     echo "Error: kernel version ${kernel_version} is not supported by SCST."
 118     echo "(could not find file $p)."
 119     exit 1
 120   fi >&2
 121 done
 122
 123
 124 # Redirect the output of all subsequent commands to the specialize-patch script
 125
 126 trap "rm -f ${fifo}" EXIT
 127 fifo=/tmp/generate-kernel-patch-fifo.$$
 128 rm -f "${fifo}"
 129 mkfifo "${fifo}"
 130 "$(dirname $0)/specialize-patch" -v kernel_version="${kernel_version}" \
 131   < "${fifo}" &
 132 exec >"${fifo}"
 133
 134 # General kernel patches.
 135
 136 cat "${kpatch[@]}"
 137
 138
 139 # Directory include/scst/
 140
 141 # Make sure the file iscsi-scst/iscsi_scst_itf_ver.h is up to date.
 142 make -s -C iscsi-scst include/iscsi_scst_itf_ver.h
 143
 144 for f in scst/include/*h
 145 do
 146   add_file "${f}" "include/scst/${f#scst/include/}"
 147 done
 148
 149 for f in iscsi-scst/include/*h
 150 do
 151   add_file "${f}" "include/scst/${f#iscsi-scst/include/}"
 152 done
 153
 154
 155 # Directory drivers/
 156
 157 add_patch "scst/kernel/in-tree/Kconfig.drivers.Linux-${kernel_version}.patch" \
 158           "drivers/Kconfig"
 159
 160 add_patch "scst/kernel/in-tree/Makefile.drivers.Linux-${kernel_version}.patch"\
 161           "drivers/Makefile"
 162
 163
 164 # Directory drivers/scst/
 165
 166 add_file "scst/kernel/in-tree/Kconfig.scst"  "drivers/scst/Kconfig"
 167
 168 add_file "scst/kernel/in-tree/Makefile.scst" "drivers/scst/Makefile"
 169
 170 add_file "scst/README"                       "Documentation/scst/README.scst"
 171
 172 for f in scst/src/*.[ch]
 173 do
 174   add_file "${f}" "drivers/scst/${f#scst/src/}"
 175 done
 176
 177
 178 # Directory drivers/scst/dev_handlers/
 179
 180 add_file "scst/kernel/in-tree/Makefile.dev_handlers" \
 181          "drivers/scst/dev_handlers/Makefile"
 182
 183 for f in scst/src/dev_handlers/*.[ch]
 184 do
 185   add_file "${f}" "drivers/scst/dev_handlers/${f#scst/src/dev_handlers/}"
 186 done
 187
 188
 189 # Directory drivers/scst/iscsi-scst/
 190
 191 add_file "iscsi-scst/kernel/Makefile.in-kernel" \
 192          "drivers/scst/iscsi-scst/Makefile"
 193
 194 add_file "iscsi-scst/kernel/Kconfig"  "drivers/scst/iscsi-scst/Kconfig"
 195
 196 add_file "iscsi-scst/README"          "Documentation/scst/README.iscsi"
 197
 198 for f in iscsi-scst/kernel/*.[ch]
 199 do
 200   add_file "${f}" "drivers/scst/iscsi-scst/${f#iscsi-scst/kernel/}"
 201 done
 202
 203
 204 # Directory drivers/scst/qla2x00-target/
 205
 206 if [ "${qla2x00t}" = "true" ]; then
 207
 208   #add_file "qla2x00t/qla2x00-target/Makefile.in-kernel" \
 209   #         "drivers/scst/qla2x00-target/Makefile"
 210
 211   #add_file "qla2x00t/qla2x00-target/Kconfig" \
 212   #         "drivers/scst/qla2x00-target/Kconfig"
 213
 214   add_file "qla2x00t/qla2x_tgt_def.h" \
 215            "drivers/scst/qla2x00-target/qla2x_tgt_def.h"
 216
 217   add_file "qla2x00t/qla2x00-target/README" \
 218            "Documentation/scst/README.qla2x00t"
 219
 220   for f in qla2x00t/qla2x00-target/*.[ch]
 221   do
 222     add_file "${f}" "drivers/scst/qla2x00-target/${f#qla2x00t/qla2x00-target/}"
 223   done
 224
 225 fi
 226
 227
 228 # Directory drivers/infiniband/ulp/srpt/
 229
 230 add_patch "srpt/src/Kconfig.infiniband.Linux-${kernel_version}.patch" \
 231           "drivers/infiniband/Kconfig"
 232
 233 add_patch "srpt/src/Makefile.infiniband.Linux-${kernel_version}.patch" \
 234           "drivers/infiniband/Makefile"
 235
 236 add_file  "srpt/src/Kconfig"            "drivers/infiniband/ulp/srpt/Kconfig"
 237
 238 add_file  "srpt/src/Makefile.in_kernel" "drivers/infiniband/ulp/srpt/Makefile"
 239
 240 add_file  "srpt/README"                 "Documentation/scst/README.srpt"
 241
 242 for f in srpt/src/*.[ch]
 243 do
 244   add_file "${f}" "drivers/infiniband/ulp/srpt/${f#srpt/src/}"
 245 done
 246
 247
 248 # Directory drivers/message/fusion/mpt_scst
 249
 250 if [ "$mpt_scst" = "true" ]; then
 251
 252   add_patch "mpt/in-tree/Kconfig-2.6.24.diff" "drivers/message/fusion/Kconfig"
 253
 254   add_patch "mpt/in-tree/Makefile.diff"       "drivers/message/fusion/Makefile"
 255
 256   add_file  "mpt/Makefile" "drivers/message/fusion/mpt_scst/Makefile"
 257
 258   add_file  "mpt/Kconfig"  "drivers/message/fusion/mpt_scst/Kconfig"
 259
 260   for f in mpt/*.[ch]
 261   do
 262     add_file "${f}" "drivers/message/fusion/mpt_scst/${f#mpt/}"
 263   done
 264
 265 fi