2006-01-05 Jeremy Katz <katzj@redhat.com>

	* scripts/mk-rescueimage.ppc: Add ppc rescue image script from
	jkeating (#177003)

1 files changed, 141 insertions, 0 deletions

diff --git a/scripts/mk-rescueimage.ppc b/scripts/mk-rescueimage.ppc
new file mode 100644
index 000000000..c9d90493f
--- /dev/null
+++ b/scripts/mk-rescueimage.ppc
@@ -0,0 +1,141 @@
+#!/usr/bin/python
+#
+# mk-rescueimage.ppc - builds a rescue image from an existing tree
+#                      which can be converted into a yaboot bootable
+#                      iso and used as a sysadmin rescue image.
+#
+#
+# Usage: mk-rescueimage.ppc <src-tree> <dest-dir> <productname>
+#
+# the rescue image will be created as <dest-dir>/ppc-rescueimage
+#
+
+import os
+import sys
+import string
+
+def usage():
+    print "usage: mk-rescueimage.ppc <toplevel> <dest-dir> <productname> [<productpath>]"
+    sys.exit(0)
+
+
+if len(sys.argv) < 5:
+    usage()
+    sys.exit(1)
+    
+if not os.access("%s/ppc" % (sys.argv[2],), os.F_OK):
+    print "ERROR - Destination directory %s does not contain a ppc directory!" % (sys.argv[2],)
+    sys.exit(1)
+
+srcdir  = sys.argv[1]
+destdir = sys.argv[2]+"/ppc-rescueimage"
+productname = sys.argv[3]
+
+if len(sys.argv) > 4:
+    productpath = sys.argv[4]
+
+# clean and create destination directory
+os.system("rm -rf %s" % (destdir,))
+os.system("mkdir %s" % (destdir,))
+
+# copy documentation
+for pat in ["*eula*", "*EULA*", "README*", "RELEASE*", "GPL", "RPM-*"]:
+    os.system("cp -p %s/%s       %s/ 2>/dev/null" % (srcdir, pat, destdir))
+
+# cp yaboot files
+os.system("cp -a %s/ppc     %s/" % (srcdir, destdir))
+os.system("cp -a %s/etc     %s/" % (srcdir, destdir))
+
+# cp stage image
+os.system("mkdir -p %s/%s/base" % (destdir, productpath))
+os.system("cp -a %s/%s/base/stage2.img %s/%s/base" % (srcdir, productpath, destdir, productpath))
+
+for arch in ("ppc32", "ppc64"):
+    # munge various yaboot configs to have a default of rescue mode
+    cfgfile = open("%s/ppc/%s/yaboot.conf" % (destdir, arch), "r")
+    cfglines = cfgfile.readlines()
+    cfgfile.close()
+
+    # backup old one
+    os.system("cp %s/ppc/%s/yaboot.conf %s/ppc/%s/yaboot.conf.backup" % (destdir, arch, destdir, arch))
+
+    cfgfile = open("%s/ppc/%s/yaboot.conf" % (destdir, arch), "w+")
+    fndit = 0
+    for l in cfglines:
+        if string.find(l, "Welcome") != -1:
+            cfgfile.write(l.replace("installer", "rescue"))
+            continue
+        if string.find(l, "default=") != -1:
+            cfgfile.write("default=rescue\n")
+            continue
+        # see if we're into the stanza now
+        elif string.find(l, "image=") != -1:
+            fndit = 1
+            # build up the rescue stanza based on whats in the
+            # default stanza as we echo it out
+            rescuestanza = l + "        label=rescue\n"
+            # if we fall through then write it out
+            cfgfile.write(l)
+        else:
+            # we're writing out the matching stanza - if we hit the append
+            # line put rescue on the end of it, otherwise just echo line
+            if fndit:
+                if string.find(l, "read-only") != -1:
+                    rescuestanza = rescuestanza + l + "        append=rescue\n"
+                else:
+                    if not string.find(l, "label=") != -1:
+                        rescuestanza = rescuestanza + l
+            cfgfile.write(l)
+    
+    if fndit:
+        cfgfile.write('\n' + rescuestanza)
+
+    cfgfile.close()
+
+    if not fndit:
+        print "Could not find default stanza, did not modify yaboot.conf"
+        os.system("mv -f %s/ppc/%s/yaboot.conf.backup %s/ppc/%s/yaboot.conf" % (destdir, arch, destdir, arch))
+    else:
+        os.system("rm -f %s/ppc/%s/yaboot.conf.backup" % (destdir, arch))
+
+# Modify top level yaboot to indicate rescue CD instead of install CD
+#
+
+cfgfile = open("%s/etc/yaboot.conf" % (destdir,), "r")
+cfglines = cfgfile.readlines()
+cfgfile.close()
+
+cfgfile = open("%s/etc/yaboot.conf" % (destdir,), "w")
+
+origlines = ''
+rescuelines = ''
+
+# do some inline replacements of text
+for l in cfglines:
+    if l.find("init-message") != -1:
+        entry = cfglines.index(l)
+        cfglines[entry] = cfglines[entry].replace("installer", "rescue")
+        cfglines[entry] = cfglines[entry].replace("linux32", "rescue32")
+        continue
+    if l.find("default=") != -1:
+        cfglines[cfglines.index(l)] = l.replace("linux", "rescue")
+        continue
+    if l.find("image=/ppc/ppc64") != -1:
+        origlines = cfglines[cfglines.index(l):]
+        break
+        
+# create a big string that is easier to do replacements on
+for l in origlines:
+     rescuelines += l
+
+# Do replacements on the big string
+rescuelines = rescuelines.replace("label=linux64", "label=rescue64")
+rescuelines = rescuelines.replace("alias=linux", "alias=rescue")
+rescuelines = rescuelines.replace("label=linux32", "label=rescue32")
+rescuelines = rescuelines.replace("read-only", "read-only\n        append=rescue")
+
+for l in cfglines:
+    cfgfile.write(l)
+
+cfgfile.write('\n' + rescuelines)
+