3 import sys, os, subprocess, signal, getopt
7 exepath = os.path.split(exe)[0] or '.'
8 exeprefix = os.path.split(os.path.abspath(exepath))[0]
10 # fix the PYTHONPATH to include our lib dir
11 if os.path.exists("%s/lib/bup/cmd/." % exeprefix):
12 # installed binary in /.../bin.
13 # eg. /usr/bin/bup means /usr/lib/bup/... is where our libraries are.
14 cmdpath = "%s/lib/bup/cmd" % exeprefix
15 libpath = "%s/lib/bup" % exeprefix
17 # running from the src directory without being installed first
18 cmdpath = os.path.join(exepath, 'cmd')
19 libpath = os.path.join(exepath, 'lib')
20 sys.path[:0] = [libpath]
21 os.environ['PYTHONPATH'] = libpath + ':' + os.environ.get('PYTHONPATH', '')
22 os.environ['BUP_MAIN_EXE'] = os.path.abspath(exe)
24 from bup.helpers import *
28 log('Usage: bup [-?|--help] [-d=BUP_DIR|--bup-dir=BUP_DIR] COMMAND [ARGS]'
31 ftp = 'Browse backup sets using an ftp-like client',
32 fsck = 'Check backup sets for damage and add redundancy information',
33 fuse = 'Mount your backup sets as a filesystem',
34 help = 'Print detailed help for the given command',
35 index = 'Create or display the index of files to back up',
36 join = 'Retrieve a file backed up using "bup split"',
37 ls = 'Browse the files in your backup sets',
38 midx = 'Index objects to speed up future backups',
39 save = 'Save files into a backup set (note: run "bup index" first)',
40 split = 'Split a single file into its own backup set',
43 log('Common commands:\n')
44 for cmd,synopsis in sorted(common.items()):
45 log(' %-10s %s\n' % (cmd, synopsis))
48 log('Other available commands:\n')
50 for c in sorted(os.listdir(cmdpath) + os.listdir(exepath)):
51 if c.startswith('bup-') and c.find('.') < 0:
53 if cname not in common:
55 log(columnate(cmds, ' '))
58 log("See 'bup help COMMAND' for more information on " +
59 "a specific command.\n")
66 # Handle global options.
68 global_args, subcmd = getopt.getopt(argv[1:], '?d:', ['help', 'bup-dir='])
69 except getopt.GetoptError, ex:
70 log('error: ' + ex.msg + '\n')
76 for opt in global_args:
77 if opt[0] == '-?' or opt[0] == '--help':
79 elif opt[0] == '-d' or opt[0] == '--bup-dir':
82 log('error: unexpected option "%s"\n' % opt[0])
91 if help_requested and subcmd[0] != 'help':
92 subcmd = ['help'] + subcmd
94 if len(subcmd) > 1 and subcmd[1] == '--help' and subcmd[0] != 'help':
95 subcmd = ['help', subcmd[0]] + subcmd[2:]
97 subcmd_name = subcmd[0]
101 subcmd_env = os.environ
103 subcmd_env.update({"BUP_DIR" : dest_dir})
106 sp = os.path.join(exepath, 'bup-%s' % s)
107 if not os.path.exists(sp):
108 sp = os.path.join(cmdpath, 'bup-%s' % s)
111 if not os.path.exists(subpath(subcmd_name)):
112 log('error: unknown command "%s"\n' % subcmd_name)
115 already_fixed = atoi(os.environ.get('BUP_FORCE_TTY'))
116 if subcmd_name in ['ftp', 'help']:
118 fix_stdout = not already_fixed and os.isatty(1)
119 fix_stderr = not already_fixed and os.isatty(2)
122 if fix_stdout or fix_stderr:
123 amt = (fix_stdout and 1 or 0) + (fix_stderr and 2 or 0)
124 os.environ['BUP_FORCE_TTY'] = str(amt)
125 os.setsid() # make sure ctrl-c is sent just to us, not to child too
127 if fix_stdout or fix_stderr:
128 realf = fix_stderr and 2 or 1
129 drealf = os.dup(realf) # Popen goes crazy with stdout=2
130 n = subprocess.Popen([subpath('newliner')],
131 stdin=subprocess.PIPE, stdout=drealf,
132 close_fds=True, preexec_fn=force_tty)
134 outf = fix_stdout and n.stdin.fileno() or None
135 errf = fix_stderr and n.stdin.fileno() or None
142 class SigException(Exception):
143 def __init__(self, signum):
145 Exception.__init__(self, 'signal %d received' % signum)
146 def handler(signum, frame):
147 raise SigException(signum)
149 signal.signal(signal.SIGTERM, handler)
150 signal.signal(signal.SIGINT, handler)
156 p = subprocess.Popen([subpath(subcmd_name)] + subcmd[1:],
157 stdout=outf, stderr=errf, preexec_fn=force_tty)
159 # if we get a signal while waiting, we have to keep waiting, just
160 # in case our child doesn't die.
164 except SigException, e:
165 log('\nbup: %s\n' % e)
166 os.kill(p.pid, e.signum)
169 log('%s: %s\n' % (subpath(subcmd_name), e))
172 if p and p.poll() == None:
173 os.kill(p.pid, signal.SIGTERM)