def mountImage(isodir, tree, discnum, messageWindow, discImages={}):
if os.path.ismount(tree):
raise SystemError, "trying to mount already-mounted iso image!"
if discImages == {}:
discImages = findIsoImages(isodir, messageWindow)
while True:
try:
isoImage = "%s/%s" % (isodir, discImages[discnum])
isys.losetup("/dev/loop1", isoImage, readOnly = 1)
isys.mount("/dev/loop1", tree, fstype = 'iso9660', readOnly = True)
break
except:
ans = messageWindow(_("Missing ISO 9660 Image"),
_("The installer has tried to mount "
"image #%s, but cannot find it on "
"the hard drive.\n\n"
"Please copy this image to the "
"drive and click Retry. Click Exit "
"to abort the installation.")
% (discnum,), type="custom",
custom_icon="warning",
custom_buttons=[_("_Exit"), _("_Retry")])
if ans == 0:
sys.exit(0)
elif ans == 1:
discImages = findIsoImages(isodir, messageWindow)
return discImages
def mountMedia(self, cdNum):
if self.mediaIsMounted:
raise SystemError, "trying to mount already-mounted iso image!"
self.mountDirectory()
retry = True
while retry:
try:
isoImage = self.isoDir + '/' + self.path + '/' + self.discImages[cdNum]
isys.makeDevInode("loop3", "/tmp/loop3")
isys.losetup("/tmp/loop3", isoImage, readOnly = 1)
isys.mount("loop3", self.tree, fstype = 'iso9660', readOnly = 1);
self.mediaIsMounted = cdNum
retry = False
except:
ans = self.messageWindow( _("Missing ISO 9660 Image"),
_("The installer has tried to mount "
"image #%s, but cannot find it on "
"the hard drive.\n\n"
"Please copy this image to the "
"drive and click Retry. Click Reboot "
" to abort the installation.")
% (cdNum,), type="custom",
custom_icon="warning",
custom_buttons=[_("_Reboot"),
_("Re_try")])
if ans == 0:
sys.exit(0)
elif ans == 1:
self.discImages = findIsoImages(self.isoPath, self.messageWindow)
def mountImage(self, cdNum):
if (self.currentMedia):
raise SystemError, "trying to mount already-mounted iso image!"
retrymount = True
while retrymount:
try:
isoImage = self.isoPath + '/' + self.discImages[cdNum]
isys.makeDevInode("loop3", "/tmp/loop3")
isys.losetup("/tmp/loop3", isoImage, readOnly = 1)
isys.mount("loop3", "/tmp/isomedia", fstype = 'iso9660', readOnly = 1);
self.mntPoint = "/tmp/isomedia/"
self.currentMedia = [ cdNum ]
retrymount = False
except:
ans = self.messageWindow( _("Missing ISO 9660 Image"),
_("The installer has tried to mount "
"image #%s, but cannot find it on "
"the server.\n\n"
"Please copy this image to the "
"remote server's share path and "
"click Retry. Click Reboot to "
"abort the installation.")
% (cdNum,), type="custom",
custom_icon="warning",
custom_buttons=[_("_Reboot"),
_("Re_try")])
if ans == 0:
sys.exit(0)
elif ans == 1:
self.discImages = findIsoImages(self.isoPath, self.messageWindow)
def mountImage(self, cdNum):
if (self.currentMedia):
raise SystemError, "trying to mount already-mounted iso image!"
retrymount = True
while retrymount:
try:
isoImage = self.isoPath + '/' + self.discImages[cdNum]
isys.makeDevInode("loop3", "/tmp/loop3")
isys.losetup("/tmp/loop3", isoImage, readOnly = 1)
isys.mount("loop3", "/tmp/isomedia", fstype = 'iso9660', readOnly = 1);
self.mntPoint = "/tmp/isomedia/"
self.currentMedia = [ cdNum ]
retrymount = False
except:
ans = self.messageWindow( _("Missing ISO 9660 Image"),
_("The installer has tried to mount "
"image #%s, but cannot find it on "
"the server.\n\n"
"Please copy this image to the "
"remote server's share path and "
"click Retry. Click Reboot to "
"abort the installation.")
% (cdNum,), type="custom",
custom_icon="warning",
custom_buttons=[_("_Reboot"),
_("Re_try")])
if ans == 0:
sys.exit(0)
elif ans == 1:
self.discImages = findIsoImages(self.isoPath, self.messageWindow)
def mountImage(self, cdNum):
if (self.imageMounted):
raise SystemError, "trying to mount already-mounted iso image!"
isoImage = self.isoPath + '/' + self.discImages[cdNum]
isys.makeDevInode("loop3", "/tmp/loop3")
isys.losetup("/tmp/loop3", isoImage, readOnly = 1)
isys.mount("loop3", "/tmp/isomedia", fstype = 'iso9660', readOnly = 1);
self.mntPoint = "/tmp/isomedia/"
self.imageMounted = cdNum
def mountMedia(self, cdNum):
if (self.mediaIsMounted):
raise SystemError, "trying to mount already-mounted iso image!"
self.mountDirectory()
isoImage = self.isoDir + '/' + self.path + '/' + self.discImages[cdNum]
isys.makeDevInode("loop3", "/tmp/loop3")
isys.losetup("/tmp/loop3", isoImage, readOnly=1)
isys.mount("loop3", "/tmp/isomedia", fstype='iso9660', readOnly=1)
self.tree = "/tmp/isomedia/"
self.mediaIsMounted = cdNum
def findIsoImages(path, messageWindow):
flush = os.stat(path)
files = os.listdir(path)
arch = _arch
discImages = {}
for file in files:
what = path + '/' + file
if not isys.isIsoImage(what):
continue
try:
isys.losetup("/dev/loop2", what, readOnly = 1)
except SystemError:
continue
try:
isys.mount("/dev/loop2", "/mnt/cdimage", fstype = "iso9660",
readOnly = True)
for num in range(1, 10):
if os.access("/mnt/cdimage/.discinfo", os.R_OK):
f = open("/mnt/cdimage/.discinfo")
try:
f.readline() # skip timestamp
f.readline() # skip release description
discArch = string.strip(f.readline()) # read architecture
discNum = getDiscNums(f.readline().strip())
except:
discArch = None
discNum = [ 0 ]
f.close()
if num not in discNum or discArch != arch:
continue
# if it's disc1, it needs to have images/install.img
if (num == 1 and not
os.access("/mnt/cdimage/images/install.img", os.R_OK)):
log.warning("%s doesn't have a install.img, skipping" %(what,))
continue
# we only install binary packages, so let's look for a
# product/ dir and hope that this avoids getting
# discs from the src.rpm set
if not os.path.isdir("/mnt/cdimage/%s" %(productPath,)):
log.warning("%s doesn't have binary RPMS, skipping" %(what,))
continue
# warn user if images appears to be wrong size
if os.stat(what)[stat.ST_SIZE] % 2048:
rc = messageWindow(_("Warning"),
_("The ISO image %s has a size which is not "
"a multiple of 2048 bytes. This may mean "
"it was corrupted on transfer to this computer."
"\n\n"
"It is recommended that you exit and abort your "
"installation, but you can choose to continue if "
"you think this is in error.") % (file,),
type="custom", custom_icon="warning",
custom_buttons= [_("_Exit installer"),
_("_Continue")])
if rc == 0:
sys.exit(0)
discImages[num] = file
isys.umount("/mnt/cdimage", removeDir=False)
except SystemError:
pass
isys.unlosetup("/dev/loop2")
return discImages
def findIsoImages(path, messageWindow):
files = os.listdir(path)
arch = _arch
discImages = {}
for file in files:
what = path + '/' + file
if not isys.isIsoImage(what):
continue
isys.makeDevInode("loop2", "/tmp/loop2")
try:
isys.losetup("/tmp/loop2", what, readOnly = 1)
except SystemError:
continue
try:
isys.mount("loop2", "/mnt/cdimage", fstype = "iso9660",
readOnly = 1)
for num in range(1, 10):
if os.access("/mnt/cdimage/.discinfo", os.R_OK):
f = open("/mnt/cdimage/.discinfo")
try:
f.readline() # skip timestamp
f.readline() # skip release description
discArch = string.strip(f.readline()) # read architecture
discNum = getDiscNums(f.readline().strip())
except:
discArch = None
discNum = [ 0 ]
f.close()
if num not in discNum or discArch != arch:
continue
# if it's disc1, it needs to have RedHat/base/stage2.img
if (num == 1 and not
os.access("/mnt/cdimage/%s/base/stage2.img" % (productPath,),
os.R_OK)):
continue
# warn user if images appears to be wrong size
if os.stat(what)[stat.ST_SIZE] % 2048:
rc = messageWindow(_("Warning"),
"The ISO image %s has a size which is not "
"a multiple of 2048 bytes. This may mean "
"it was corrupted on transfer to this computer."
"\n\n"
"It is recommended that you reboot and abort your "
"installation, but you can choose to continue if "
"you think this is in error." % (file,),
type="custom",
custom_icon="warning",
custom_buttons= [_("_Reboot"),
_("_Continue")])
if rc == 0:
sys.exit(0)
discImages[num] = file
isys.umount("/mnt/cdimage")
except SystemError:
pass
isys.makeDevInode("loop2", '/tmp/' + "loop2")
isys.unlosetup("/tmp/loop2")
return discImages
from sys import argv
def usage():
print "usage: losetup [-d] /dev/loopN [image]"
sys.exit(1)
if len(argv) < 3:
usage()
if argv[1] == "-d" and len(argv[2]) > 4 and argv[2][-5:-1] == "loop":
try:
isys.makeDevInode(argv[2][-5:], argv[2])
isys.unlosetup(argv[2])
except SystemError, (errno, msg):
print msg
sys.exit(1)
sys.exit(0)
if len(argv[1]) > 4 and argv[1][-5:-1] == "loop":
try:
isys.makeDevInode(argv[1][-5:], argv[1])
isys.losetup(argv[1], argv[2])
except SystemError, (errno, msg):
print msg
sys.exit(1)
sys.exit(0)
usage()
