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@@ -1,653 +1,655 b'' | |||||
1 | # posix.py - Posix utility function implementations for Mercurial |
|
1 | # posix.py - Posix utility function implementations for Mercurial | |
2 | # |
|
2 | # | |
3 | # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
|
3 | # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others | |
4 | # |
|
4 | # | |
5 | # This software may be used and distributed according to the terms of the |
|
5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2 or any later version. |
|
6 | # GNU General Public License version 2 or any later version. | |
7 |
|
7 | |||
8 | from __future__ import absolute_import |
|
8 | from __future__ import absolute_import | |
9 |
|
9 | |||
10 | import errno |
|
10 | import errno | |
11 | import fcntl |
|
11 | import fcntl | |
12 | import getpass |
|
12 | import getpass | |
13 | import grp |
|
13 | import grp | |
14 | import os |
|
14 | import os | |
15 | import pwd |
|
15 | import pwd | |
16 | import re |
|
16 | import re | |
17 | import select |
|
17 | import select | |
18 | import socket |
|
18 | import socket | |
19 | import stat |
|
19 | import stat | |
20 | import sys |
|
20 | import sys | |
21 | import tempfile |
|
21 | import tempfile | |
22 | import unicodedata |
|
22 | import unicodedata | |
23 |
|
23 | |||
24 | from .i18n import _ |
|
24 | from .i18n import _ | |
25 | from . import ( |
|
25 | from . import ( | |
26 | encoding, |
|
26 | encoding, | |
27 | ) |
|
27 | ) | |
28 |
|
28 | |||
29 | posixfile = open |
|
29 | posixfile = open | |
30 | normpath = os.path.normpath |
|
30 | normpath = os.path.normpath | |
31 | samestat = os.path.samestat |
|
31 | samestat = os.path.samestat | |
32 | oslink = os.link |
|
32 | oslink = os.link | |
33 | unlink = os.unlink |
|
33 | unlink = os.unlink | |
34 | rename = os.rename |
|
34 | rename = os.rename | |
35 | removedirs = os.removedirs |
|
35 | removedirs = os.removedirs | |
36 | expandglobs = False |
|
36 | expandglobs = False | |
37 |
|
37 | |||
38 | umask = os.umask(0) |
|
38 | umask = os.umask(0) | |
39 | os.umask(umask) |
|
39 | os.umask(umask) | |
40 |
|
40 | |||
41 | def split(p): |
|
41 | def split(p): | |
42 | '''Same as posixpath.split, but faster |
|
42 | '''Same as posixpath.split, but faster | |
43 |
|
43 | |||
44 | >>> import posixpath |
|
44 | >>> import posixpath | |
45 | >>> for f in ['/absolute/path/to/file', |
|
45 | >>> for f in ['/absolute/path/to/file', | |
46 | ... 'relative/path/to/file', |
|
46 | ... 'relative/path/to/file', | |
47 | ... 'file_alone', |
|
47 | ... 'file_alone', | |
48 | ... 'path/to/directory/', |
|
48 | ... 'path/to/directory/', | |
49 | ... '/multiple/path//separators', |
|
49 | ... '/multiple/path//separators', | |
50 | ... '/file_at_root', |
|
50 | ... '/file_at_root', | |
51 | ... '///multiple_leading_separators_at_root', |
|
51 | ... '///multiple_leading_separators_at_root', | |
52 | ... '']: |
|
52 | ... '']: | |
53 | ... assert split(f) == posixpath.split(f), f |
|
53 | ... assert split(f) == posixpath.split(f), f | |
54 | ''' |
|
54 | ''' | |
55 | ht = p.rsplit('/', 1) |
|
55 | ht = p.rsplit('/', 1) | |
56 | if len(ht) == 1: |
|
56 | if len(ht) == 1: | |
57 | return '', p |
|
57 | return '', p | |
58 | nh = ht[0].rstrip('/') |
|
58 | nh = ht[0].rstrip('/') | |
59 | if nh: |
|
59 | if nh: | |
60 | return nh, ht[1] |
|
60 | return nh, ht[1] | |
61 | return ht[0] + '/', ht[1] |
|
61 | return ht[0] + '/', ht[1] | |
62 |
|
62 | |||
63 | def openhardlinks(): |
|
63 | def openhardlinks(): | |
64 | '''return true if it is safe to hold open file handles to hardlinks''' |
|
64 | '''return true if it is safe to hold open file handles to hardlinks''' | |
65 | return True |
|
65 | return True | |
66 |
|
66 | |||
67 | def nlinks(name): |
|
67 | def nlinks(name): | |
68 | '''return number of hardlinks for the given file''' |
|
68 | '''return number of hardlinks for the given file''' | |
69 | return os.lstat(name).st_nlink |
|
69 | return os.lstat(name).st_nlink | |
70 |
|
70 | |||
71 | def parsepatchoutput(output_line): |
|
71 | def parsepatchoutput(output_line): | |
72 | """parses the output produced by patch and returns the filename""" |
|
72 | """parses the output produced by patch and returns the filename""" | |
73 | pf = output_line[14:] |
|
73 | pf = output_line[14:] | |
74 | if os.sys.platform == 'OpenVMS': |
|
74 | if os.sys.platform == 'OpenVMS': | |
75 | if pf[0] == '`': |
|
75 | if pf[0] == '`': | |
76 | pf = pf[1:-1] # Remove the quotes |
|
76 | pf = pf[1:-1] # Remove the quotes | |
77 | else: |
|
77 | else: | |
78 | if pf.startswith("'") and pf.endswith("'") and " " in pf: |
|
78 | if pf.startswith("'") and pf.endswith("'") and " " in pf: | |
79 | pf = pf[1:-1] # Remove the quotes |
|
79 | pf = pf[1:-1] # Remove the quotes | |
80 | return pf |
|
80 | return pf | |
81 |
|
81 | |||
82 | def sshargs(sshcmd, host, user, port): |
|
82 | def sshargs(sshcmd, host, user, port): | |
83 | '''Build argument list for ssh''' |
|
83 | '''Build argument list for ssh''' | |
84 | args = user and ("%s@%s" % (user, host)) or host |
|
84 | args = user and ("%s@%s" % (user, host)) or host | |
85 | return port and ("%s -p %s" % (args, port)) or args |
|
85 | return port and ("%s -p %s" % (args, port)) or args | |
86 |
|
86 | |||
87 | def isexec(f): |
|
87 | def isexec(f): | |
88 | """check whether a file is executable""" |
|
88 | """check whether a file is executable""" | |
89 | return (os.lstat(f).st_mode & 0o100 != 0) |
|
89 | return (os.lstat(f).st_mode & 0o100 != 0) | |
90 |
|
90 | |||
91 | def setflags(f, l, x): |
|
91 | def setflags(f, l, x): | |
92 | s = os.lstat(f).st_mode |
|
92 | s = os.lstat(f).st_mode | |
93 | if l: |
|
93 | if l: | |
94 | if not stat.S_ISLNK(s): |
|
94 | if not stat.S_ISLNK(s): | |
95 | # switch file to link |
|
95 | # switch file to link | |
96 | fp = open(f) |
|
96 | fp = open(f) | |
97 | data = fp.read() |
|
97 | data = fp.read() | |
98 | fp.close() |
|
98 | fp.close() | |
99 | os.unlink(f) |
|
99 | os.unlink(f) | |
100 | try: |
|
100 | try: | |
101 | os.symlink(data, f) |
|
101 | os.symlink(data, f) | |
102 | except OSError: |
|
102 | except OSError: | |
103 | # failed to make a link, rewrite file |
|
103 | # failed to make a link, rewrite file | |
104 | fp = open(f, "w") |
|
104 | fp = open(f, "w") | |
105 | fp.write(data) |
|
105 | fp.write(data) | |
106 | fp.close() |
|
106 | fp.close() | |
107 | # no chmod needed at this point |
|
107 | # no chmod needed at this point | |
108 | return |
|
108 | return | |
109 | if stat.S_ISLNK(s): |
|
109 | if stat.S_ISLNK(s): | |
110 | # switch link to file |
|
110 | # switch link to file | |
111 | data = os.readlink(f) |
|
111 | data = os.readlink(f) | |
112 | os.unlink(f) |
|
112 | os.unlink(f) | |
113 | fp = open(f, "w") |
|
113 | fp = open(f, "w") | |
114 | fp.write(data) |
|
114 | fp.write(data) | |
115 | fp.close() |
|
115 | fp.close() | |
116 | s = 0o666 & ~umask # avoid restatting for chmod |
|
116 | s = 0o666 & ~umask # avoid restatting for chmod | |
117 |
|
117 | |||
118 | sx = s & 0o100 |
|
118 | sx = s & 0o100 | |
119 | if x and not sx: |
|
119 | if x and not sx: | |
120 | # Turn on +x for every +r bit when making a file executable |
|
120 | # Turn on +x for every +r bit when making a file executable | |
121 | # and obey umask. |
|
121 | # and obey umask. | |
122 | os.chmod(f, s | (s & 0o444) >> 2 & ~umask) |
|
122 | os.chmod(f, s | (s & 0o444) >> 2 & ~umask) | |
123 | elif not x and sx: |
|
123 | elif not x and sx: | |
124 | # Turn off all +x bits |
|
124 | # Turn off all +x bits | |
125 | os.chmod(f, s & 0o666) |
|
125 | os.chmod(f, s & 0o666) | |
126 |
|
126 | |||
127 | def copymode(src, dst, mode=None): |
|
127 | def copymode(src, dst, mode=None): | |
128 | '''Copy the file mode from the file at path src to dst. |
|
128 | '''Copy the file mode from the file at path src to dst. | |
129 | If src doesn't exist, we're using mode instead. If mode is None, we're |
|
129 | If src doesn't exist, we're using mode instead. If mode is None, we're | |
130 | using umask.''' |
|
130 | using umask.''' | |
131 | try: |
|
131 | try: | |
132 | st_mode = os.lstat(src).st_mode & 0o777 |
|
132 | st_mode = os.lstat(src).st_mode & 0o777 | |
133 | except OSError as inst: |
|
133 | except OSError as inst: | |
134 | if inst.errno != errno.ENOENT: |
|
134 | if inst.errno != errno.ENOENT: | |
135 | raise |
|
135 | raise | |
136 | st_mode = mode |
|
136 | st_mode = mode | |
137 | if st_mode is None: |
|
137 | if st_mode is None: | |
138 | st_mode = ~umask |
|
138 | st_mode = ~umask | |
139 | st_mode &= 0o666 |
|
139 | st_mode &= 0o666 | |
140 | os.chmod(dst, st_mode) |
|
140 | os.chmod(dst, st_mode) | |
141 |
|
141 | |||
142 | def checkexec(path): |
|
142 | def checkexec(path): | |
143 | """ |
|
143 | """ | |
144 | Check whether the given path is on a filesystem with UNIX-like exec flags |
|
144 | Check whether the given path is on a filesystem with UNIX-like exec flags | |
145 |
|
145 | |||
146 | Requires a directory (like /foo/.hg) |
|
146 | Requires a directory (like /foo/.hg) | |
147 | """ |
|
147 | """ | |
148 |
|
148 | |||
149 | # VFAT on some Linux versions can flip mode but it doesn't persist |
|
149 | # VFAT on some Linux versions can flip mode but it doesn't persist | |
150 | # a FS remount. Frequently we can detect it if files are created |
|
150 | # a FS remount. Frequently we can detect it if files are created | |
151 | # with exec bit on. |
|
151 | # with exec bit on. | |
152 |
|
152 | |||
153 | try: |
|
153 | try: | |
154 | EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH |
|
154 | EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH | |
155 | fh, fn = tempfile.mkstemp(dir=path, prefix='hg-checkexec-') |
|
155 | fh, fn = tempfile.mkstemp(dir=path, prefix='hg-checkexec-') | |
156 | try: |
|
156 | try: | |
157 | os.close(fh) |
|
157 | os.close(fh) | |
158 | m = os.stat(fn).st_mode & 0o777 |
|
158 | m = os.stat(fn).st_mode & 0o777 | |
159 | new_file_has_exec = m & EXECFLAGS |
|
159 | new_file_has_exec = m & EXECFLAGS | |
160 | os.chmod(fn, m ^ EXECFLAGS) |
|
160 | os.chmod(fn, m ^ EXECFLAGS) | |
161 | exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0o777) == m) |
|
161 | exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0o777) == m) | |
162 | finally: |
|
162 | finally: | |
163 | os.unlink(fn) |
|
163 | os.unlink(fn) | |
164 | except (IOError, OSError): |
|
164 | except (IOError, OSError): | |
165 | # we don't care, the user probably won't be able to commit anyway |
|
165 | # we don't care, the user probably won't be able to commit anyway | |
166 | return False |
|
166 | return False | |
167 | return not (new_file_has_exec or exec_flags_cannot_flip) |
|
167 | return not (new_file_has_exec or exec_flags_cannot_flip) | |
168 |
|
168 | |||
169 | def checklink(path): |
|
169 | def checklink(path): | |
170 | """check whether the given path is on a symlink-capable filesystem""" |
|
170 | """check whether the given path is on a symlink-capable filesystem""" | |
171 | # mktemp is not racy because symlink creation will fail if the |
|
171 | # mktemp is not racy because symlink creation will fail if the | |
172 | # file already exists |
|
172 | # file already exists | |
173 | while True: |
|
173 | while True: | |
174 | name = tempfile.mktemp(dir=path, prefix='hg-checklink-') |
|
174 | name = tempfile.mktemp(dir=path, prefix='hg-checklink-') | |
175 | try: |
|
175 | try: | |
176 | fd = tempfile.NamedTemporaryFile(dir=path, prefix='hg-checklink-') |
|
176 | fd = tempfile.NamedTemporaryFile(dir=path, prefix='hg-checklink-') | |
177 | try: |
|
177 | try: | |
178 | os.symlink(os.path.basename(fd.name), name) |
|
178 | os.symlink(os.path.basename(fd.name), name) | |
179 | os.unlink(name) |
|
179 | os.unlink(name) | |
180 | return True |
|
180 | return True | |
181 | except OSError as inst: |
|
181 | except OSError as inst: | |
182 | # link creation might race, try again |
|
182 | # link creation might race, try again | |
183 | if inst[0] == errno.EEXIST: |
|
183 | if inst[0] == errno.EEXIST: | |
184 | continue |
|
184 | continue | |
|
185 | raise | |||
|
186 | finally: | |||
|
187 | fd.close() | |||
|
188 | except AttributeError: | |||
|
189 | return False | |||
|
190 | except OSError as inst: | |||
185 |
|
|
191 | # sshfs might report failure while successfully creating the link | |
186 |
|
|
192 | if inst[0] == errno.EIO and os.path.exists(name): | |
187 |
|
|
193 | os.unlink(name) | |
188 |
|
|
194 | return False | |
189 | finally: |
|
|||
190 | fd.close() |
|
|||
191 | except AttributeError: |
|
|||
192 | return False |
|
|||
193 |
|
195 | |||
194 | def checkosfilename(path): |
|
196 | def checkosfilename(path): | |
195 | '''Check that the base-relative path is a valid filename on this platform. |
|
197 | '''Check that the base-relative path is a valid filename on this platform. | |
196 | Returns None if the path is ok, or a UI string describing the problem.''' |
|
198 | Returns None if the path is ok, or a UI string describing the problem.''' | |
197 | pass # on posix platforms, every path is ok |
|
199 | pass # on posix platforms, every path is ok | |
198 |
|
200 | |||
199 | def setbinary(fd): |
|
201 | def setbinary(fd): | |
200 | pass |
|
202 | pass | |
201 |
|
203 | |||
202 | def pconvert(path): |
|
204 | def pconvert(path): | |
203 | return path |
|
205 | return path | |
204 |
|
206 | |||
205 | def localpath(path): |
|
207 | def localpath(path): | |
206 | return path |
|
208 | return path | |
207 |
|
209 | |||
208 | def samefile(fpath1, fpath2): |
|
210 | def samefile(fpath1, fpath2): | |
209 | """Returns whether path1 and path2 refer to the same file. This is only |
|
211 | """Returns whether path1 and path2 refer to the same file. This is only | |
210 | guaranteed to work for files, not directories.""" |
|
212 | guaranteed to work for files, not directories.""" | |
211 | return os.path.samefile(fpath1, fpath2) |
|
213 | return os.path.samefile(fpath1, fpath2) | |
212 |
|
214 | |||
213 | def samedevice(fpath1, fpath2): |
|
215 | def samedevice(fpath1, fpath2): | |
214 | """Returns whether fpath1 and fpath2 are on the same device. This is only |
|
216 | """Returns whether fpath1 and fpath2 are on the same device. This is only | |
215 | guaranteed to work for files, not directories.""" |
|
217 | guaranteed to work for files, not directories.""" | |
216 | st1 = os.lstat(fpath1) |
|
218 | st1 = os.lstat(fpath1) | |
217 | st2 = os.lstat(fpath2) |
|
219 | st2 = os.lstat(fpath2) | |
218 | return st1.st_dev == st2.st_dev |
|
220 | return st1.st_dev == st2.st_dev | |
219 |
|
221 | |||
220 | # os.path.normcase is a no-op, which doesn't help us on non-native filesystems |
|
222 | # os.path.normcase is a no-op, which doesn't help us on non-native filesystems | |
221 | def normcase(path): |
|
223 | def normcase(path): | |
222 | return path.lower() |
|
224 | return path.lower() | |
223 |
|
225 | |||
224 | # what normcase does to ASCII strings |
|
226 | # what normcase does to ASCII strings | |
225 | normcasespec = encoding.normcasespecs.lower |
|
227 | normcasespec = encoding.normcasespecs.lower | |
226 | # fallback normcase function for non-ASCII strings |
|
228 | # fallback normcase function for non-ASCII strings | |
227 | normcasefallback = normcase |
|
229 | normcasefallback = normcase | |
228 |
|
230 | |||
229 | if sys.platform == 'darwin': |
|
231 | if sys.platform == 'darwin': | |
230 |
|
232 | |||
231 | def normcase(path): |
|
233 | def normcase(path): | |
232 | ''' |
|
234 | ''' | |
233 | Normalize a filename for OS X-compatible comparison: |
|
235 | Normalize a filename for OS X-compatible comparison: | |
234 | - escape-encode invalid characters |
|
236 | - escape-encode invalid characters | |
235 | - decompose to NFD |
|
237 | - decompose to NFD | |
236 | - lowercase |
|
238 | - lowercase | |
237 | - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff] |
|
239 | - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff] | |
238 |
|
240 | |||
239 | >>> normcase('UPPER') |
|
241 | >>> normcase('UPPER') | |
240 | 'upper' |
|
242 | 'upper' | |
241 | >>> normcase('Caf\xc3\xa9') |
|
243 | >>> normcase('Caf\xc3\xa9') | |
242 | 'cafe\\xcc\\x81' |
|
244 | 'cafe\\xcc\\x81' | |
243 | >>> normcase('\xc3\x89') |
|
245 | >>> normcase('\xc3\x89') | |
244 | 'e\\xcc\\x81' |
|
246 | 'e\\xcc\\x81' | |
245 | >>> normcase('\xb8\xca\xc3\xca\xbe\xc8.JPG') # issue3918 |
|
247 | >>> normcase('\xb8\xca\xc3\xca\xbe\xc8.JPG') # issue3918 | |
246 | '%b8%ca%c3\\xca\\xbe%c8.jpg' |
|
248 | '%b8%ca%c3\\xca\\xbe%c8.jpg' | |
247 | ''' |
|
249 | ''' | |
248 |
|
250 | |||
249 | try: |
|
251 | try: | |
250 | return encoding.asciilower(path) # exception for non-ASCII |
|
252 | return encoding.asciilower(path) # exception for non-ASCII | |
251 | except UnicodeDecodeError: |
|
253 | except UnicodeDecodeError: | |
252 | return normcasefallback(path) |
|
254 | return normcasefallback(path) | |
253 |
|
255 | |||
254 | normcasespec = encoding.normcasespecs.lower |
|
256 | normcasespec = encoding.normcasespecs.lower | |
255 |
|
257 | |||
256 | def normcasefallback(path): |
|
258 | def normcasefallback(path): | |
257 | try: |
|
259 | try: | |
258 | u = path.decode('utf-8') |
|
260 | u = path.decode('utf-8') | |
259 | except UnicodeDecodeError: |
|
261 | except UnicodeDecodeError: | |
260 | # OS X percent-encodes any bytes that aren't valid utf-8 |
|
262 | # OS X percent-encodes any bytes that aren't valid utf-8 | |
261 | s = '' |
|
263 | s = '' | |
262 | g = '' |
|
264 | g = '' | |
263 | l = 0 |
|
265 | l = 0 | |
264 | for c in path: |
|
266 | for c in path: | |
265 | o = ord(c) |
|
267 | o = ord(c) | |
266 | if l and o < 128 or o >= 192: |
|
268 | if l and o < 128 or o >= 192: | |
267 | # we want a continuation byte, but didn't get one |
|
269 | # we want a continuation byte, but didn't get one | |
268 | s += ''.join(["%%%02X" % ord(x) for x in g]) |
|
270 | s += ''.join(["%%%02X" % ord(x) for x in g]) | |
269 | g = '' |
|
271 | g = '' | |
270 | l = 0 |
|
272 | l = 0 | |
271 | if l == 0 and o < 128: |
|
273 | if l == 0 and o < 128: | |
272 | # ascii |
|
274 | # ascii | |
273 | s += c |
|
275 | s += c | |
274 | elif l == 0 and 194 <= o < 245: |
|
276 | elif l == 0 and 194 <= o < 245: | |
275 | # valid leading bytes |
|
277 | # valid leading bytes | |
276 | if o < 224: |
|
278 | if o < 224: | |
277 | l = 1 |
|
279 | l = 1 | |
278 | elif o < 240: |
|
280 | elif o < 240: | |
279 | l = 2 |
|
281 | l = 2 | |
280 | else: |
|
282 | else: | |
281 | l = 3 |
|
283 | l = 3 | |
282 | g = c |
|
284 | g = c | |
283 | elif l > 0 and 128 <= o < 192: |
|
285 | elif l > 0 and 128 <= o < 192: | |
284 | # valid continuations |
|
286 | # valid continuations | |
285 | g += c |
|
287 | g += c | |
286 | l -= 1 |
|
288 | l -= 1 | |
287 | if not l: |
|
289 | if not l: | |
288 | s += g |
|
290 | s += g | |
289 | g = '' |
|
291 | g = '' | |
290 | else: |
|
292 | else: | |
291 | # invalid |
|
293 | # invalid | |
292 | s += "%%%02X" % o |
|
294 | s += "%%%02X" % o | |
293 |
|
295 | |||
294 | # any remaining partial characters |
|
296 | # any remaining partial characters | |
295 | s += ''.join(["%%%02X" % ord(x) for x in g]) |
|
297 | s += ''.join(["%%%02X" % ord(x) for x in g]) | |
296 | u = s.decode('utf-8') |
|
298 | u = s.decode('utf-8') | |
297 |
|
299 | |||
298 | # Decompose then lowercase (HFS+ technote specifies lower) |
|
300 | # Decompose then lowercase (HFS+ technote specifies lower) | |
299 | enc = unicodedata.normalize('NFD', u).lower().encode('utf-8') |
|
301 | enc = unicodedata.normalize('NFD', u).lower().encode('utf-8') | |
300 | # drop HFS+ ignored characters |
|
302 | # drop HFS+ ignored characters | |
301 | return encoding.hfsignoreclean(enc) |
|
303 | return encoding.hfsignoreclean(enc) | |
302 |
|
304 | |||
303 | if sys.platform == 'cygwin': |
|
305 | if sys.platform == 'cygwin': | |
304 | # workaround for cygwin, in which mount point part of path is |
|
306 | # workaround for cygwin, in which mount point part of path is | |
305 | # treated as case sensitive, even though underlying NTFS is case |
|
307 | # treated as case sensitive, even though underlying NTFS is case | |
306 | # insensitive. |
|
308 | # insensitive. | |
307 |
|
309 | |||
308 | # default mount points |
|
310 | # default mount points | |
309 | cygwinmountpoints = sorted([ |
|
311 | cygwinmountpoints = sorted([ | |
310 | "/usr/bin", |
|
312 | "/usr/bin", | |
311 | "/usr/lib", |
|
313 | "/usr/lib", | |
312 | "/cygdrive", |
|
314 | "/cygdrive", | |
313 | ], reverse=True) |
|
315 | ], reverse=True) | |
314 |
|
316 | |||
315 | # use upper-ing as normcase as same as NTFS workaround |
|
317 | # use upper-ing as normcase as same as NTFS workaround | |
316 | def normcase(path): |
|
318 | def normcase(path): | |
317 | pathlen = len(path) |
|
319 | pathlen = len(path) | |
318 | if (pathlen == 0) or (path[0] != os.sep): |
|
320 | if (pathlen == 0) or (path[0] != os.sep): | |
319 | # treat as relative |
|
321 | # treat as relative | |
320 | return encoding.upper(path) |
|
322 | return encoding.upper(path) | |
321 |
|
323 | |||
322 | # to preserve case of mountpoint part |
|
324 | # to preserve case of mountpoint part | |
323 | for mp in cygwinmountpoints: |
|
325 | for mp in cygwinmountpoints: | |
324 | if not path.startswith(mp): |
|
326 | if not path.startswith(mp): | |
325 | continue |
|
327 | continue | |
326 |
|
328 | |||
327 | mplen = len(mp) |
|
329 | mplen = len(mp) | |
328 | if mplen == pathlen: # mount point itself |
|
330 | if mplen == pathlen: # mount point itself | |
329 | return mp |
|
331 | return mp | |
330 | if path[mplen] == os.sep: |
|
332 | if path[mplen] == os.sep: | |
331 | return mp + encoding.upper(path[mplen:]) |
|
333 | return mp + encoding.upper(path[mplen:]) | |
332 |
|
334 | |||
333 | return encoding.upper(path) |
|
335 | return encoding.upper(path) | |
334 |
|
336 | |||
335 | normcasespec = encoding.normcasespecs.other |
|
337 | normcasespec = encoding.normcasespecs.other | |
336 | normcasefallback = normcase |
|
338 | normcasefallback = normcase | |
337 |
|
339 | |||
338 | # Cygwin translates native ACLs to POSIX permissions, |
|
340 | # Cygwin translates native ACLs to POSIX permissions, | |
339 | # but these translations are not supported by native |
|
341 | # but these translations are not supported by native | |
340 | # tools, so the exec bit tends to be set erroneously. |
|
342 | # tools, so the exec bit tends to be set erroneously. | |
341 | # Therefore, disable executable bit access on Cygwin. |
|
343 | # Therefore, disable executable bit access on Cygwin. | |
342 | def checkexec(path): |
|
344 | def checkexec(path): | |
343 | return False |
|
345 | return False | |
344 |
|
346 | |||
345 | # Similarly, Cygwin's symlink emulation is likely to create |
|
347 | # Similarly, Cygwin's symlink emulation is likely to create | |
346 | # problems when Mercurial is used from both Cygwin and native |
|
348 | # problems when Mercurial is used from both Cygwin and native | |
347 | # Windows, with other native tools, or on shared volumes |
|
349 | # Windows, with other native tools, or on shared volumes | |
348 | def checklink(path): |
|
350 | def checklink(path): | |
349 | return False |
|
351 | return False | |
350 |
|
352 | |||
351 | _needsshellquote = None |
|
353 | _needsshellquote = None | |
352 | def shellquote(s): |
|
354 | def shellquote(s): | |
353 | if os.sys.platform == 'OpenVMS': |
|
355 | if os.sys.platform == 'OpenVMS': | |
354 | return '"%s"' % s |
|
356 | return '"%s"' % s | |
355 | global _needsshellquote |
|
357 | global _needsshellquote | |
356 | if _needsshellquote is None: |
|
358 | if _needsshellquote is None: | |
357 | _needsshellquote = re.compile(r'[^a-zA-Z0-9._/+-]').search |
|
359 | _needsshellquote = re.compile(r'[^a-zA-Z0-9._/+-]').search | |
358 | if s and not _needsshellquote(s): |
|
360 | if s and not _needsshellquote(s): | |
359 | # "s" shouldn't have to be quoted |
|
361 | # "s" shouldn't have to be quoted | |
360 | return s |
|
362 | return s | |
361 | else: |
|
363 | else: | |
362 | return "'%s'" % s.replace("'", "'\\''") |
|
364 | return "'%s'" % s.replace("'", "'\\''") | |
363 |
|
365 | |||
364 | def quotecommand(cmd): |
|
366 | def quotecommand(cmd): | |
365 | return cmd |
|
367 | return cmd | |
366 |
|
368 | |||
367 | def popen(command, mode='r'): |
|
369 | def popen(command, mode='r'): | |
368 | return os.popen(command, mode) |
|
370 | return os.popen(command, mode) | |
369 |
|
371 | |||
370 | def testpid(pid): |
|
372 | def testpid(pid): | |
371 | '''return False if pid dead, True if running or not sure''' |
|
373 | '''return False if pid dead, True if running or not sure''' | |
372 | if os.sys.platform == 'OpenVMS': |
|
374 | if os.sys.platform == 'OpenVMS': | |
373 | return True |
|
375 | return True | |
374 | try: |
|
376 | try: | |
375 | os.kill(pid, 0) |
|
377 | os.kill(pid, 0) | |
376 | return True |
|
378 | return True | |
377 | except OSError as inst: |
|
379 | except OSError as inst: | |
378 | return inst.errno != errno.ESRCH |
|
380 | return inst.errno != errno.ESRCH | |
379 |
|
381 | |||
380 | def explainexit(code): |
|
382 | def explainexit(code): | |
381 | """return a 2-tuple (desc, code) describing a subprocess status |
|
383 | """return a 2-tuple (desc, code) describing a subprocess status | |
382 | (codes from kill are negative - not os.system/wait encoding)""" |
|
384 | (codes from kill are negative - not os.system/wait encoding)""" | |
383 | if code >= 0: |
|
385 | if code >= 0: | |
384 | return _("exited with status %d") % code, code |
|
386 | return _("exited with status %d") % code, code | |
385 | return _("killed by signal %d") % -code, -code |
|
387 | return _("killed by signal %d") % -code, -code | |
386 |
|
388 | |||
387 | def isowner(st): |
|
389 | def isowner(st): | |
388 | """Return True if the stat object st is from the current user.""" |
|
390 | """Return True if the stat object st is from the current user.""" | |
389 | return st.st_uid == os.getuid() |
|
391 | return st.st_uid == os.getuid() | |
390 |
|
392 | |||
391 | def findexe(command): |
|
393 | def findexe(command): | |
392 | '''Find executable for command searching like which does. |
|
394 | '''Find executable for command searching like which does. | |
393 | If command is a basename then PATH is searched for command. |
|
395 | If command is a basename then PATH is searched for command. | |
394 | PATH isn't searched if command is an absolute or relative path. |
|
396 | PATH isn't searched if command is an absolute or relative path. | |
395 | If command isn't found None is returned.''' |
|
397 | If command isn't found None is returned.''' | |
396 | if sys.platform == 'OpenVMS': |
|
398 | if sys.platform == 'OpenVMS': | |
397 | return command |
|
399 | return command | |
398 |
|
400 | |||
399 | def findexisting(executable): |
|
401 | def findexisting(executable): | |
400 | 'Will return executable if existing file' |
|
402 | 'Will return executable if existing file' | |
401 | if os.path.isfile(executable) and os.access(executable, os.X_OK): |
|
403 | if os.path.isfile(executable) and os.access(executable, os.X_OK): | |
402 | return executable |
|
404 | return executable | |
403 | return None |
|
405 | return None | |
404 |
|
406 | |||
405 | if os.sep in command: |
|
407 | if os.sep in command: | |
406 | return findexisting(command) |
|
408 | return findexisting(command) | |
407 |
|
409 | |||
408 | if sys.platform == 'plan9': |
|
410 | if sys.platform == 'plan9': | |
409 | return findexisting(os.path.join('/bin', command)) |
|
411 | return findexisting(os.path.join('/bin', command)) | |
410 |
|
412 | |||
411 | for path in os.environ.get('PATH', '').split(os.pathsep): |
|
413 | for path in os.environ.get('PATH', '').split(os.pathsep): | |
412 | executable = findexisting(os.path.join(path, command)) |
|
414 | executable = findexisting(os.path.join(path, command)) | |
413 | if executable is not None: |
|
415 | if executable is not None: | |
414 | return executable |
|
416 | return executable | |
415 | return None |
|
417 | return None | |
416 |
|
418 | |||
417 | def setsignalhandler(): |
|
419 | def setsignalhandler(): | |
418 | pass |
|
420 | pass | |
419 |
|
421 | |||
420 | _wantedkinds = set([stat.S_IFREG, stat.S_IFLNK]) |
|
422 | _wantedkinds = set([stat.S_IFREG, stat.S_IFLNK]) | |
421 |
|
423 | |||
422 | def statfiles(files): |
|
424 | def statfiles(files): | |
423 | '''Stat each file in files. Yield each stat, or None if a file does not |
|
425 | '''Stat each file in files. Yield each stat, or None if a file does not | |
424 | exist or has a type we don't care about.''' |
|
426 | exist or has a type we don't care about.''' | |
425 | lstat = os.lstat |
|
427 | lstat = os.lstat | |
426 | getkind = stat.S_IFMT |
|
428 | getkind = stat.S_IFMT | |
427 | for nf in files: |
|
429 | for nf in files: | |
428 | try: |
|
430 | try: | |
429 | st = lstat(nf) |
|
431 | st = lstat(nf) | |
430 | if getkind(st.st_mode) not in _wantedkinds: |
|
432 | if getkind(st.st_mode) not in _wantedkinds: | |
431 | st = None |
|
433 | st = None | |
432 | except OSError as err: |
|
434 | except OSError as err: | |
433 | if err.errno not in (errno.ENOENT, errno.ENOTDIR): |
|
435 | if err.errno not in (errno.ENOENT, errno.ENOTDIR): | |
434 | raise |
|
436 | raise | |
435 | st = None |
|
437 | st = None | |
436 | yield st |
|
438 | yield st | |
437 |
|
439 | |||
438 | def getuser(): |
|
440 | def getuser(): | |
439 | '''return name of current user''' |
|
441 | '''return name of current user''' | |
440 | return getpass.getuser() |
|
442 | return getpass.getuser() | |
441 |
|
443 | |||
442 | def username(uid=None): |
|
444 | def username(uid=None): | |
443 | """Return the name of the user with the given uid. |
|
445 | """Return the name of the user with the given uid. | |
444 |
|
446 | |||
445 | If uid is None, return the name of the current user.""" |
|
447 | If uid is None, return the name of the current user.""" | |
446 |
|
448 | |||
447 | if uid is None: |
|
449 | if uid is None: | |
448 | uid = os.getuid() |
|
450 | uid = os.getuid() | |
449 | try: |
|
451 | try: | |
450 | return pwd.getpwuid(uid)[0] |
|
452 | return pwd.getpwuid(uid)[0] | |
451 | except KeyError: |
|
453 | except KeyError: | |
452 | return str(uid) |
|
454 | return str(uid) | |
453 |
|
455 | |||
454 | def groupname(gid=None): |
|
456 | def groupname(gid=None): | |
455 | """Return the name of the group with the given gid. |
|
457 | """Return the name of the group with the given gid. | |
456 |
|
458 | |||
457 | If gid is None, return the name of the current group.""" |
|
459 | If gid is None, return the name of the current group.""" | |
458 |
|
460 | |||
459 | if gid is None: |
|
461 | if gid is None: | |
460 | gid = os.getgid() |
|
462 | gid = os.getgid() | |
461 | try: |
|
463 | try: | |
462 | return grp.getgrgid(gid)[0] |
|
464 | return grp.getgrgid(gid)[0] | |
463 | except KeyError: |
|
465 | except KeyError: | |
464 | return str(gid) |
|
466 | return str(gid) | |
465 |
|
467 | |||
466 | def groupmembers(name): |
|
468 | def groupmembers(name): | |
467 | """Return the list of members of the group with the given |
|
469 | """Return the list of members of the group with the given | |
468 | name, KeyError if the group does not exist. |
|
470 | name, KeyError if the group does not exist. | |
469 | """ |
|
471 | """ | |
470 | return list(grp.getgrnam(name).gr_mem) |
|
472 | return list(grp.getgrnam(name).gr_mem) | |
471 |
|
473 | |||
472 | def spawndetached(args): |
|
474 | def spawndetached(args): | |
473 | return os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0), |
|
475 | return os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0), | |
474 | args[0], args) |
|
476 | args[0], args) | |
475 |
|
477 | |||
476 | def gethgcmd(): |
|
478 | def gethgcmd(): | |
477 | return sys.argv[:1] |
|
479 | return sys.argv[:1] | |
478 |
|
480 | |||
479 | def termwidth(): |
|
481 | def termwidth(): | |
480 | try: |
|
482 | try: | |
481 | import array |
|
483 | import array | |
482 | import termios |
|
484 | import termios | |
483 | for dev in (sys.stderr, sys.stdout, sys.stdin): |
|
485 | for dev in (sys.stderr, sys.stdout, sys.stdin): | |
484 | try: |
|
486 | try: | |
485 | try: |
|
487 | try: | |
486 | fd = dev.fileno() |
|
488 | fd = dev.fileno() | |
487 | except AttributeError: |
|
489 | except AttributeError: | |
488 | continue |
|
490 | continue | |
489 | if not os.isatty(fd): |
|
491 | if not os.isatty(fd): | |
490 | continue |
|
492 | continue | |
491 | try: |
|
493 | try: | |
492 | arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8) |
|
494 | arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8) | |
493 | width = array.array('h', arri)[1] |
|
495 | width = array.array('h', arri)[1] | |
494 | if width > 0: |
|
496 | if width > 0: | |
495 | return width |
|
497 | return width | |
496 | except AttributeError: |
|
498 | except AttributeError: | |
497 | pass |
|
499 | pass | |
498 | except ValueError: |
|
500 | except ValueError: | |
499 | pass |
|
501 | pass | |
500 | except IOError as e: |
|
502 | except IOError as e: | |
501 | if e[0] == errno.EINVAL: |
|
503 | if e[0] == errno.EINVAL: | |
502 | pass |
|
504 | pass | |
503 | else: |
|
505 | else: | |
504 | raise |
|
506 | raise | |
505 | except ImportError: |
|
507 | except ImportError: | |
506 | pass |
|
508 | pass | |
507 | return 80 |
|
509 | return 80 | |
508 |
|
510 | |||
509 | def makedir(path, notindexed): |
|
511 | def makedir(path, notindexed): | |
510 | os.mkdir(path) |
|
512 | os.mkdir(path) | |
511 |
|
513 | |||
512 | def unlinkpath(f, ignoremissing=False): |
|
514 | def unlinkpath(f, ignoremissing=False): | |
513 | """unlink and remove the directory if it is empty""" |
|
515 | """unlink and remove the directory if it is empty""" | |
514 | try: |
|
516 | try: | |
515 | os.unlink(f) |
|
517 | os.unlink(f) | |
516 | except OSError as e: |
|
518 | except OSError as e: | |
517 | if not (ignoremissing and e.errno == errno.ENOENT): |
|
519 | if not (ignoremissing and e.errno == errno.ENOENT): | |
518 | raise |
|
520 | raise | |
519 | # try removing directories that might now be empty |
|
521 | # try removing directories that might now be empty | |
520 | try: |
|
522 | try: | |
521 | os.removedirs(os.path.dirname(f)) |
|
523 | os.removedirs(os.path.dirname(f)) | |
522 | except OSError: |
|
524 | except OSError: | |
523 | pass |
|
525 | pass | |
524 |
|
526 | |||
525 | def lookupreg(key, name=None, scope=None): |
|
527 | def lookupreg(key, name=None, scope=None): | |
526 | return None |
|
528 | return None | |
527 |
|
529 | |||
528 | def hidewindow(): |
|
530 | def hidewindow(): | |
529 | """Hide current shell window. |
|
531 | """Hide current shell window. | |
530 |
|
532 | |||
531 | Used to hide the window opened when starting asynchronous |
|
533 | Used to hide the window opened when starting asynchronous | |
532 | child process under Windows, unneeded on other systems. |
|
534 | child process under Windows, unneeded on other systems. | |
533 | """ |
|
535 | """ | |
534 | pass |
|
536 | pass | |
535 |
|
537 | |||
536 | class cachestat(object): |
|
538 | class cachestat(object): | |
537 | def __init__(self, path): |
|
539 | def __init__(self, path): | |
538 | self.stat = os.stat(path) |
|
540 | self.stat = os.stat(path) | |
539 |
|
541 | |||
540 | def cacheable(self): |
|
542 | def cacheable(self): | |
541 | return bool(self.stat.st_ino) |
|
543 | return bool(self.stat.st_ino) | |
542 |
|
544 | |||
543 | __hash__ = object.__hash__ |
|
545 | __hash__ = object.__hash__ | |
544 |
|
546 | |||
545 | def __eq__(self, other): |
|
547 | def __eq__(self, other): | |
546 | try: |
|
548 | try: | |
547 | # Only dev, ino, size, mtime and atime are likely to change. Out |
|
549 | # Only dev, ino, size, mtime and atime are likely to change. Out | |
548 | # of these, we shouldn't compare atime but should compare the |
|
550 | # of these, we shouldn't compare atime but should compare the | |
549 | # rest. However, one of the other fields changing indicates |
|
551 | # rest. However, one of the other fields changing indicates | |
550 | # something fishy going on, so return False if anything but atime |
|
552 | # something fishy going on, so return False if anything but atime | |
551 | # changes. |
|
553 | # changes. | |
552 | return (self.stat.st_mode == other.stat.st_mode and |
|
554 | return (self.stat.st_mode == other.stat.st_mode and | |
553 | self.stat.st_ino == other.stat.st_ino and |
|
555 | self.stat.st_ino == other.stat.st_ino and | |
554 | self.stat.st_dev == other.stat.st_dev and |
|
556 | self.stat.st_dev == other.stat.st_dev and | |
555 | self.stat.st_nlink == other.stat.st_nlink and |
|
557 | self.stat.st_nlink == other.stat.st_nlink and | |
556 | self.stat.st_uid == other.stat.st_uid and |
|
558 | self.stat.st_uid == other.stat.st_uid and | |
557 | self.stat.st_gid == other.stat.st_gid and |
|
559 | self.stat.st_gid == other.stat.st_gid and | |
558 | self.stat.st_size == other.stat.st_size and |
|
560 | self.stat.st_size == other.stat.st_size and | |
559 | self.stat.st_mtime == other.stat.st_mtime and |
|
561 | self.stat.st_mtime == other.stat.st_mtime and | |
560 | self.stat.st_ctime == other.stat.st_ctime) |
|
562 | self.stat.st_ctime == other.stat.st_ctime) | |
561 | except AttributeError: |
|
563 | except AttributeError: | |
562 | return False |
|
564 | return False | |
563 |
|
565 | |||
564 | def __ne__(self, other): |
|
566 | def __ne__(self, other): | |
565 | return not self == other |
|
567 | return not self == other | |
566 |
|
568 | |||
567 | def executablepath(): |
|
569 | def executablepath(): | |
568 | return None # available on Windows only |
|
570 | return None # available on Windows only | |
569 |
|
571 | |||
570 | class unixdomainserver(socket.socket): |
|
572 | class unixdomainserver(socket.socket): | |
571 | def __init__(self, join, subsystem): |
|
573 | def __init__(self, join, subsystem): | |
572 | '''Create a unix domain socket with the given prefix.''' |
|
574 | '''Create a unix domain socket with the given prefix.''' | |
573 | super(unixdomainserver, self).__init__(socket.AF_UNIX) |
|
575 | super(unixdomainserver, self).__init__(socket.AF_UNIX) | |
574 | sockname = subsystem + '.sock' |
|
576 | sockname = subsystem + '.sock' | |
575 | self.realpath = self.path = join(sockname) |
|
577 | self.realpath = self.path = join(sockname) | |
576 | if os.path.islink(self.path): |
|
578 | if os.path.islink(self.path): | |
577 | if os.path.exists(self.path): |
|
579 | if os.path.exists(self.path): | |
578 | self.realpath = os.readlink(self.path) |
|
580 | self.realpath = os.readlink(self.path) | |
579 | else: |
|
581 | else: | |
580 | os.unlink(self.path) |
|
582 | os.unlink(self.path) | |
581 | try: |
|
583 | try: | |
582 | self.bind(self.realpath) |
|
584 | self.bind(self.realpath) | |
583 | except socket.error as err: |
|
585 | except socket.error as err: | |
584 | if err.args[0] == 'AF_UNIX path too long': |
|
586 | if err.args[0] == 'AF_UNIX path too long': | |
585 | tmpdir = tempfile.mkdtemp(prefix='hg-%s-' % subsystem) |
|
587 | tmpdir = tempfile.mkdtemp(prefix='hg-%s-' % subsystem) | |
586 | self.realpath = os.path.join(tmpdir, sockname) |
|
588 | self.realpath = os.path.join(tmpdir, sockname) | |
587 | try: |
|
589 | try: | |
588 | self.bind(self.realpath) |
|
590 | self.bind(self.realpath) | |
589 | os.symlink(self.realpath, self.path) |
|
591 | os.symlink(self.realpath, self.path) | |
590 | except (OSError, socket.error): |
|
592 | except (OSError, socket.error): | |
591 | self.cleanup() |
|
593 | self.cleanup() | |
592 | raise |
|
594 | raise | |
593 | else: |
|
595 | else: | |
594 | raise |
|
596 | raise | |
595 | self.listen(5) |
|
597 | self.listen(5) | |
596 |
|
598 | |||
597 | def cleanup(self): |
|
599 | def cleanup(self): | |
598 | def okayifmissing(f, path): |
|
600 | def okayifmissing(f, path): | |
599 | try: |
|
601 | try: | |
600 | f(path) |
|
602 | f(path) | |
601 | except OSError as err: |
|
603 | except OSError as err: | |
602 | if err.errno != errno.ENOENT: |
|
604 | if err.errno != errno.ENOENT: | |
603 | raise |
|
605 | raise | |
604 |
|
606 | |||
605 | okayifmissing(os.unlink, self.path) |
|
607 | okayifmissing(os.unlink, self.path) | |
606 | if self.realpath != self.path: |
|
608 | if self.realpath != self.path: | |
607 | okayifmissing(os.unlink, self.realpath) |
|
609 | okayifmissing(os.unlink, self.realpath) | |
608 | okayifmissing(os.rmdir, os.path.dirname(self.realpath)) |
|
610 | okayifmissing(os.rmdir, os.path.dirname(self.realpath)) | |
609 |
|
611 | |||
610 | def statislink(st): |
|
612 | def statislink(st): | |
611 | '''check whether a stat result is a symlink''' |
|
613 | '''check whether a stat result is a symlink''' | |
612 | return st and stat.S_ISLNK(st.st_mode) |
|
614 | return st and stat.S_ISLNK(st.st_mode) | |
613 |
|
615 | |||
614 | def statisexec(st): |
|
616 | def statisexec(st): | |
615 | '''check whether a stat result is an executable file''' |
|
617 | '''check whether a stat result is an executable file''' | |
616 | return st and (st.st_mode & 0o100 != 0) |
|
618 | return st and (st.st_mode & 0o100 != 0) | |
617 |
|
619 | |||
618 | def poll(fds): |
|
620 | def poll(fds): | |
619 | """block until something happens on any file descriptor |
|
621 | """block until something happens on any file descriptor | |
620 |
|
622 | |||
621 | This is a generic helper that will check for any activity |
|
623 | This is a generic helper that will check for any activity | |
622 | (read, write. exception) and return the list of touched files. |
|
624 | (read, write. exception) and return the list of touched files. | |
623 |
|
625 | |||
624 | In unsupported cases, it will raise a NotImplementedError""" |
|
626 | In unsupported cases, it will raise a NotImplementedError""" | |
625 | try: |
|
627 | try: | |
626 | res = select.select(fds, fds, fds) |
|
628 | res = select.select(fds, fds, fds) | |
627 | except ValueError: # out of range file descriptor |
|
629 | except ValueError: # out of range file descriptor | |
628 | raise NotImplementedError() |
|
630 | raise NotImplementedError() | |
629 | return sorted(list(set(sum(res, [])))) |
|
631 | return sorted(list(set(sum(res, [])))) | |
630 |
|
632 | |||
631 | def readpipe(pipe): |
|
633 | def readpipe(pipe): | |
632 | """Read all available data from a pipe.""" |
|
634 | """Read all available data from a pipe.""" | |
633 | # We can't fstat() a pipe because Linux will always report 0. |
|
635 | # We can't fstat() a pipe because Linux will always report 0. | |
634 | # So, we set the pipe to non-blocking mode and read everything |
|
636 | # So, we set the pipe to non-blocking mode and read everything | |
635 | # that's available. |
|
637 | # that's available. | |
636 | flags = fcntl.fcntl(pipe, fcntl.F_GETFL) |
|
638 | flags = fcntl.fcntl(pipe, fcntl.F_GETFL) | |
637 | flags |= os.O_NONBLOCK |
|
639 | flags |= os.O_NONBLOCK | |
638 | oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) |
|
640 | oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) | |
639 |
|
641 | |||
640 | try: |
|
642 | try: | |
641 | chunks = [] |
|
643 | chunks = [] | |
642 | while True: |
|
644 | while True: | |
643 | try: |
|
645 | try: | |
644 | s = pipe.read() |
|
646 | s = pipe.read() | |
645 | if not s: |
|
647 | if not s: | |
646 | break |
|
648 | break | |
647 | chunks.append(s) |
|
649 | chunks.append(s) | |
648 | except IOError: |
|
650 | except IOError: | |
649 | break |
|
651 | break | |
650 |
|
652 | |||
651 | return ''.join(chunks) |
|
653 | return ''.join(chunks) | |
652 | finally: |
|
654 | finally: | |
653 | fcntl.fcntl(pipe, fcntl.F_SETFL, oldflags) |
|
655 | fcntl.fcntl(pipe, fcntl.F_SETFL, oldflags) |
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