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crit: The 'fds' explorer

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Shows files opened by tasks. The output is like

1
	      0: /dev/null
	      1: /zdtm/live/static/session00.outns
	      2: /zdtm/live/static/session00.outns
	    cwd: /zdtm/live/static
	   root: /
6
	      0: /dev/null
	      1: /zdtm/live/static/session00.out.inprogress
	      2: /zdtm/live/static/session00.out.inprogress
	      3: pipe[18305]
	    cwd: /zdtm/live/static
	   root: /
10
	      0: /dev/null
	      1: /zdtm/live/static/session00.out.inprogress
	      2: /zdtm/live/static/session00.out.inprogress
	      3: pipe[18308]
	    cwd: /zdtm/live/static
	   root: /

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Appreciated-by: avagin@openvz.org
This commit is contained in:
Pavel Emelyanov 2015-12-14 13:20:58 +03:00
parent 022baf868b
commit 6c8f7bbb29
1 changed files with 64 additions and 2 deletions
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66
crit
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@ -90,7 +90,69 @@ def explore_ps(opts):
show_ps(psr, opts)
explorers = { 'ps': explore_ps }
def ftype_find_in_image(opts, ft, fid, img):
if ft['img'] == None:
ft['img'] = pycriu.images.load(dinf(opts, img))['entries']
for f in ft['img']:
if f['id'] == fid:
return f
return None
def ftype_reg(opts, ft, fid):
rf = ftype_find_in_image(opts, ft, fid, 'reg-files.img')
return rf and rf['name'] or 'unknown path'
def ftype_pipe(opts, ft, fid):
p = ftype_find_in_image(opts, ft, fid, 'pipes.img')
return p and 'pipe[%d]' % p['pipe_id'] or 'pipe[?]'
def ftype_unix(opts, ft, fid):
ux = ftype_find_in_image(opts, ft, fid, 'unixsk.img')
if not ux:
return 'unix[?]'
n = ux['name'] and ' %s' % ux['name'].decode('base64') or ''
return 'unix[%d (%d)%s]' % (ux['ino'], ux['peer'], n)
file_types = {
'REG': {'get': ftype_reg, 'img': None},
'PIPE': {'get': ftype_pipe, 'img': None},
'UNIXSK': {'get': ftype_unix, 'img': None},
}
def ftype_gen(opts, ft, fid):
return '%s.%d' % (ft['typ'], fid)
files_cache = { }
def get_file_str(opts, fd):
key = (fd['type'], fd['id'])
f = files_cache.get(key, None)
if not f:
ft = file_types.get(fd['type'], {'get': ftype_gen, 'typ': fd['type']})
f = ft['get'](opts, ft, fd['id'])
files_cache[key] = f
return f
def explore_fds(opts):
ps_img = pycriu.images.load(dinf(opts, 'pstree.img'))
for p in ps_img['entries']:
pid = p['pid']
idi = pycriu.images.load(dinf(opts, 'ids-%s.img' % pid))
fdt = idi['entries'][0]['files_id']
fdi = pycriu.images.load(dinf(opts, 'fdinfo-%d.img' % fdt))
print "%d" % pid
for fd in fdi['entries']:
print "\t%7d: %s" % (fd['fd'], get_file_str(opts, fd))
fdi = pycriu.images.load(dinf(opts, 'fs-%d.img' % pid))['entries'][0]
print "\t%7s: %s" % ('cwd', get_file_str(opts, {'type': 'REG', 'id': fdi['cwd_id']}))
print "\t%7s: %s" % ('root', get_file_str(opts, {'type': 'REG', 'id': fdi['root_id']}))
explorers = { 'ps': explore_ps, 'fds': explore_fds }
def explore(opts):
explorers[opts['what']](opts)
@ -136,7 +198,7 @@ def main():
# Explore
x_parser = subparsers.add_parser('x', help = 'explore image dir')
x_parser.add_argument('dir')
x_parser.add_argument('what', choices = [ 'ps' ])
x_parser.add_argument('what', choices = [ 'ps', 'fds' ])
x_parser.set_defaults(func=explore)
# Show