-#!/usr/bin/env python
+#!/bin/sh
+"""": # -*-python-*- # -*-python-*-
+bup_python="$(dirname "$0")/cmd/bup-python" || exit $?
+exec "$bup_python" "$0" ${1+"$@"}
+"""
+# end of bup preamble
+
import sys, os, subprocess, signal, getopt
+
argv = sys.argv
exe = os.path.realpath(argv[0])
exepath = os.path.split(exe)[0] or '.'
os.environ['BUP_MAIN_EXE'] = os.path.abspath(exe)
os.environ['BUP_RESOURCE_PATH'] = resourcepath
+
from bup import helpers
-from bup.helpers import *
+from bup.compat import wrap_main
+from bup.helpers import atoi, columnate, debug1, log, tty_width
+
# after running 'bup newliner', the tty_width() ioctl won't work anymore
os.environ['WIDTH'] = str(tty_width())
try:
optspec = ['help', 'version', 'debug', 'profile', 'bup-dir=']
global_args, subcmd = getopt.getopt(argv[1:], '?VDd:', optspec)
-except getopt.GetoptError, ex:
+except getopt.GetoptError as ex:
usage('error: %s' % ex.msg)
help_requested = None
else:
usage('error: unexpected option "%s"' % opt[0])
+# Make BUP_DIR absolute, so we aren't affected by chdir (i.e. save -C, etc.).
+if 'BUP_DIR' in os.environ:
+ os.environ['BUP_DIR'] = os.path.abspath(os.environ['BUP_DIR'])
+
if len(subcmd) == 0:
if help_requested:
subcmd = ['help']
outf = None
errf = None
+ret = 95
+p = None
+forward_signals = True
-class SigException(Exception):
- def __init__(self, signum):
- self.signum = signum
- Exception.__init__(self, 'signal %d received' % signum)
def handler(signum, frame):
- raise SigException(signum)
-
-signal.signal(signal.SIGTERM, handler)
-signal.signal(signal.SIGINT, handler)
+ debug1('\nbup: signal %d received\n' % signum)
+ if not p or not forward_signals:
+ return
+ if signum != signal.SIGTSTP:
+ os.kill(p.pid, signum)
+ else: # SIGTSTP: stop the child, then ourselves.
+ os.kill(p.pid, signal.SIGSTOP)
+ signal.signal(signal.SIGTSTP, signal.SIG_DFL)
+ os.kill(os.getpid(), signal.SIGTSTP)
+ # Back from suspend -- reestablish the handler.
+ signal.signal(signal.SIGTSTP, handler)
+ ret = 94
+
+def main():
+ signal.signal(signal.SIGTERM, handler)
+ signal.signal(signal.SIGINT, handler)
+ signal.signal(signal.SIGTSTP, handler)
+ signal.signal(signal.SIGCONT, handler)
-ret = 95
-p = None
-try:
try:
- c = (do_profile and [sys.executable, '-m', 'cProfile'] or []) + subcmd
- if not n and not outf and not errf:
- # shortcut when no bup-newliner stuff is needed
- os.execvp(c[0], c)
- else:
- p = subprocess.Popen(c, stdout=outf, stderr=errf,
- preexec_fn=force_tty)
- while 1:
- # if we get a signal while waiting, we have to keep waiting, just
- # in case our child doesn't die.
- try:
+ try:
+ c = (do_profile and [sys.executable, '-m', 'cProfile'] or []) + subcmd
+ if not n and not outf and not errf:
+ # shortcut when no bup-newliner stuff is needed
+ os.execvp(c[0], c)
+ else:
+ p = subprocess.Popen(c, stdout=outf, stderr=errf,
+ preexec_fn=force_tty)
+ while 1:
+ # if we get a signal while waiting, we have to keep waiting, just
+ # in case our child doesn't die.
ret = p.wait()
+ forward_signals = False
break
- except SigException, e:
- log('\nbup: %s\n' % e)
- os.kill(p.pid, e.signum)
- ret = 94
- except OSError, e:
- log('%s: %s\n' % (subcmd[0], e))
- ret = 98
-finally:
- if p and p.poll() == None:
- os.kill(p.pid, signal.SIGTERM)
- p.wait()
- if n:
- n.stdin.close()
- try:
- n.wait()
- except:
- pass
-sys.exit(ret)
+ except OSError as e:
+ log('%s: %s\n' % (subcmd[0], e))
+ ret = 98
+ finally:
+ if p and p.poll() == None:
+ os.kill(p.pid, signal.SIGTERM)
+ p.wait()
+ if n:
+ n.stdin.close()
+ try:
+ n.wait()
+ except:
+ pass
+ sys.exit(ret)
+
+wrap_main(main)