mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-25 23:52:17 +00:00
131 lines
3.7 KiB
Python
Executable File
131 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# Copyright (C) 2007 Oracle. All rights reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public
|
|
# License v2 as published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public
|
|
# License along with this program; if not, write to the
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 021110-1307, USA.
|
|
#
|
|
import sys, os, stat, fcntl
|
|
from optparse import OptionParser
|
|
|
|
def copylink(srcname, dst, filename, statinfo):
|
|
dstname = os.path.join(dst, filename)
|
|
if not os.path.exists(dstname):
|
|
link_target = os.readlink(srcname)
|
|
os.symlink(link_target, dstname)
|
|
|
|
def copydev(srcname, dst, filename, statinfo):
|
|
devbits = statinfo.st_mode & (stat.S_IFBLK | stat.S_IFCHR)
|
|
mode = stat.S_IMODE(statinfo.st_mode) | devbits
|
|
dstname = os.path.join(dst, filename)
|
|
if not os.path.exists(dstname):
|
|
os.mknod(dstname, mode, statinfo.st_rdev)
|
|
|
|
def copyfile(srcname, dst, filename, statinfo):
|
|
written = 0
|
|
dstname = os.path.join(dst, filename)
|
|
|
|
try:
|
|
os.unlink(dstname)
|
|
except:
|
|
pass
|
|
|
|
if options.link:
|
|
os.link(srcname, dstname)
|
|
return
|
|
|
|
dstf = file(dstname, 'w')
|
|
srcf = file(srcname, 'r')
|
|
|
|
ret = 1
|
|
|
|
try:
|
|
if not options.copy:
|
|
ret = fcntl.ioctl(dstf.fileno(), 1074041865, srcf.fileno())
|
|
except:
|
|
pass
|
|
|
|
if ret != 0:
|
|
while True:
|
|
buf = srcf.read(256 * 1024)
|
|
if not buf:
|
|
break
|
|
written += len(buf)
|
|
dstf.write(buf)
|
|
|
|
os.chmod(dstname, stat.S_IMODE(statinfo.st_mode))
|
|
os.chown(dstname, statinfo.st_uid, statinfo.st_gid)
|
|
|
|
|
|
usage = "usage: %prog [options]"
|
|
parser = OptionParser(usage=usage)
|
|
parser.add_option("-l", "--link", help="Create hard links", default=False,
|
|
action="store_true")
|
|
parser.add_option("-c", "--copy", help="Copy file bytes (don't cow)",
|
|
default=False, action="store_true")
|
|
|
|
(options,args) = parser.parse_args()
|
|
|
|
if len(args) < 2:
|
|
sys.stderr.write("source or destination not specified\n")
|
|
sys.exit(1)
|
|
|
|
if options.link and options.copy:
|
|
sys.stderr.write("Both -l and -c specified, using copy mode\n")
|
|
options.link = False
|
|
|
|
|
|
src = args[0]
|
|
dst = args[1]
|
|
|
|
if not os.path.exists(dst):
|
|
os.makedirs(dst)
|
|
|
|
iter = os.walk(src, topdown=True)
|
|
|
|
for (dirpath, dirnames, filenames) in iter:
|
|
for x in dirnames:
|
|
srcname = os.path.join(dirpath, x)
|
|
statinfo = os.lstat(srcname)
|
|
|
|
if srcname.startswith(src):
|
|
part = srcname[len(src) + 1:]
|
|
|
|
if stat.S_ISLNK(statinfo.st_mode):
|
|
copylink(srcname, dst, part, statinfo)
|
|
continue
|
|
|
|
dst_dir = os.path.join(dst, part)
|
|
if not os.path.exists(dst_dir):
|
|
os.makedirs(dst_dir)
|
|
|
|
os.chmod(dst_dir, stat.S_IMODE(statinfo.st_mode))
|
|
os.chown(dst_dir, statinfo.st_uid, statinfo.st_gid)
|
|
|
|
for f in filenames:
|
|
srcname = os.path.join(dirpath, f)
|
|
if srcname.startswith(src):
|
|
part = srcname[len(src) + 1:]
|
|
|
|
statinfo = os.lstat(srcname)
|
|
st_mode = statinfo.st_mode
|
|
|
|
if stat.S_ISLNK(st_mode):
|
|
copylink(srcname, dst, part, statinfo)
|
|
|
|
elif stat.S_ISBLK(st_mode) or stat.S_ISCHR(st_mode):
|
|
copydev(srcname, dst, part, statinfo)
|
|
|
|
elif stat.S_ISREG(st_mode):
|
|
copyfile(srcname, dst, part, statinfo)
|