mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-22 14:13:04 +00:00
796a0e9cc4
Bcp was assuming that a path on the command line would never have a slash after it, which is silly, and would cause the first letter of everything in the root of the source to be truncated. Instead, use os.path.relpath to handle it properly. Signed-off-by: Carey Underwood <cwillu@cwillu.com> Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
160 lines
4.8 KiB
Python
Executable File
160 lines
4.8 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (C) 2007 Oracle. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public
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# License v2 as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public
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# License along with this program; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 021110-1307, USA.
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#
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import sys, os, stat, fcntl
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from optparse import OptionParser
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def copylink(srcname, dst, filename, statinfo, force_name):
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dstname = os.path.join(dst, force_name or filename)
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if not os.path.exists(dstname):
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link_target = os.readlink(srcname)
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os.symlink(link_target, dstname)
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def copydev(srcname, dst, filename, statinfo, force_name):
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devbits = statinfo.st_mode & (stat.S_IFBLK | stat.S_IFCHR)
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mode = stat.S_IMODE(statinfo.st_mode) | devbits
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dstname = os.path.join(dst, force_name or filename)
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if not os.path.exists(dstname):
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os.mknod(dstname, mode, statinfo.st_rdev)
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def copyfile(srcname, dst, filename, statinfo, force_name):
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written = 0
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dstname = os.path.join(dst, force_name or filename)
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st_mode = statinfo.st_mode
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if stat.S_ISLNK(st_mode):
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copylink(srcname, dst, part, statinfo, None)
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return
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elif stat.S_ISBLK(st_mode) or stat.S_ISCHR(st_mode):
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copydev(srcname, dst, part, statinfo, None)
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return
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elif not stat.S_ISREG(st_mode):
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return
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try:
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os.unlink(dstname)
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except:
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pass
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if options.link:
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os.link(srcname, dstname)
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return
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dstf = file(dstname, 'w')
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srcf = file(srcname, 'r')
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ret = 1
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try:
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if not options.copy:
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ret = fcntl.ioctl(dstf.fileno(), 1074041865, srcf.fileno())
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except:
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pass
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if ret != 0:
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while True:
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buf = srcf.read(256 * 1024)
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if not buf:
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break
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written += len(buf)
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dstf.write(buf)
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os.chmod(dstname, stat.S_IMODE(statinfo.st_mode))
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os.chown(dstname, statinfo.st_uid, statinfo.st_gid)
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usage = "usage: %prog [options]"
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parser = OptionParser(usage=usage)
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parser.add_option("-l", "--link", help="Create hard links", default=False,
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action="store_true")
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parser.add_option("-c", "--copy", help="Copy file bytes (don't cow)",
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default=False, action="store_true")
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(options,args) = parser.parse_args()
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if len(args) < 2:
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sys.stderr.write("source or destination not specified\n")
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sys.exit(1)
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if options.link and options.copy:
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sys.stderr.write("Both -l and -c specified, using copy mode\n")
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options.link = False
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total_args = len(args)
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src_args = total_args - 1
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orig_dst = args[-1]
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if src_args > 1:
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if not os.path.exists(orig_dst):
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os.makedirs(orig_dst)
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if not os.path.isdir(orig_dst):
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sys.stderr.write("Destination %s is not a directory\n" % orig_dst)
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exit(1)
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for srci in xrange(0, src_args):
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src = args[srci]
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if os.path.isfile(src):
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statinfo = os.lstat(src)
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force_name = None
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if src_args == 1:
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if not os.path.isdir(orig_dst):
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force_name = os.path.basename(orig_dst)
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orig_dst = os.path.dirname(orig_dst) or '.'
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copyfile(src, orig_dst, os.path.basename(src), statinfo, force_name)
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continue
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if src_args > 1 or os.path.exists(orig_dst):
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dst = os.path.join(orig_dst, os.path.basename(src))
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else:
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dst = orig_dst
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if not os.path.exists(dst):
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os.makedirs(dst)
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statinfo = os.stat(src)
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os.chmod(dst, stat.S_IMODE(statinfo.st_mode))
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os.chown(dst, statinfo.st_uid, statinfo.st_gid)
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iter = os.walk(src, topdown=True)
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for (dirpath, dirnames, filenames) in iter:
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for x in dirnames:
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srcname = os.path.join(dirpath, x)
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statinfo = os.lstat(srcname)
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part = os.path.relpath(srcname, src)
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if stat.S_ISLNK(statinfo.st_mode):
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copylink(srcname, dst, part, statinfo, None)
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continue
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dst_dir = os.path.join(dst, part)
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if not os.path.exists(dst_dir):
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os.makedirs(dst_dir)
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os.chmod(dst_dir, stat.S_IMODE(statinfo.st_mode))
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os.chown(dst_dir, statinfo.st_uid, statinfo.st_gid)
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for f in filenames:
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srcname = os.path.join(dirpath, f)
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part = os.path.relpath(srcname, src)
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statinfo = os.lstat(srcname)
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copyfile(srcname, dst, part, statinfo, None)
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