prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  conda raises bogus NotWritableError exception for a bogus attempt to chown to root
  This isn't a dupe (well it is a dupe of #7109) but the issue still persists.
  
  #7180 fixed the problem in one section of code, but the same problematic snippet is present here:
  
  https://github.com/conda/conda/blob/master/conda/gateways/disk/update.py#L121
  conda raises bogus NotWritableError exception for a bogus attempt to chown to root
  This isn't a dupe (well it is a dupe of #7109) but the issue still persists.
  
  #7180 fixed the problem in one section of code, but the same problematic snippet is present here:
  
  https://github.com/conda/conda/blob/master/conda/gateways/disk/update.py#L121
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `conda/gateways/disk/update.py`
  Content:
  ```
  1 # -*- coding: utf-8 -*-
  2 # Copyright (C) 2012 Anaconda, Inc
  3 # SPDX-License-Identifier: BSD-3-Clause
  4 from __future__ import absolute_import, division, print_function, unicode_literals
  5 
  6 from errno import EINVAL, EXDEV, EPERM
  7 from logging import getLogger
  8 import os
  9 from os.path import dirname, isdir, split, basename, join, exists
  10 import re
  11 from shutil import move
  12 from subprocess import Popen, PIPE
  13 
  14 from . import exp_backoff_fn, mkdir_p, mkdir_p_sudo_safe
  15 from .delete import rm_rf
  16 from .link import lexists
  17 from ...base.context import context
  18 from ...common.compat import on_win
  19 from ...common.path import expand
  20 from ...exceptions import NotWritableError
  21 
  22 log = getLogger(__name__)
  23 
  24 SHEBANG_REGEX = re.compile(br'^(#!((?:\\ |[^ \n\r])+)(.*))')
  25 
  26 
  27 class CancelOperation(Exception):
  28     pass
  29 
  30 
  31 def update_file_in_place_as_binary(file_full_path, callback):
  32     # callback should be a callable that takes one positional argument, which is the
  33     #   content of the file before updating
  34     # this method updates the file in-place, without releasing the file lock
  35     fh = None
  36     try:
  37         fh = exp_backoff_fn(open, file_full_path, 'rb+')
  38         log.trace("in-place update path locked for %s", file_full_path)
  39         data = fh.read()
  40         fh.seek(0)
  41         try:
  42             fh.write(callback(data))
  43             fh.truncate()
  44         except CancelOperation:
  45             pass  # NOQA
  46     finally:
  47         if fh:
  48             fh.close()
  49 
  50 
  51 def rename(source_path, destination_path, force=False):
  52     if lexists(destination_path) and force:
  53         rm_rf(destination_path)
  54     if lexists(source_path):
  55         log.trace("renaming %s => %s", source_path, destination_path)
  56         try:
  57             os.rename(source_path, destination_path)
  58         except EnvironmentError as e:
  59             if (on_win and dirname(source_path) == dirname(destination_path)
  60                     and os.path.isfile(source_path)):
  61                 condabin_dir = join(context.conda_prefix, "condabin")
  62                 rename_script = join(condabin_dir, 'rename_tmp.bat')
  63                 if exists(rename_script):
  64                     _dirname, _src_fn = split(source_path)
  65                     _dest_fn = basename(destination_path)
  66                     p = Popen(['cmd.exe', '/C', rename_script, _dirname,
  67                                _src_fn, _dest_fn], stdout=PIPE, stderr=PIPE)
  68                     stdout, stderr = p.communicate()
  69                 else:
  70                     log.debug("{} is missing.  Conda was not installed correctly or has been "
  71                               "corrupted.  Please file an issue on the conda github repo."
  72                               .format(rename_script))
  73             elif e.errno in (EINVAL, EXDEV, EPERM):
  74                 # https://github.com/conda/conda/issues/6811
  75                 # https://github.com/conda/conda/issues/6711
  76                 log.trace("Could not rename %s => %s due to errno [%s]. Falling back"
  77                           " to copy/unlink", source_path, destination_path, e.errno)
  78                 # https://github.com/moby/moby/issues/25409#issuecomment-238537855
  79                 # shutil.move() falls back to copy+unlink
  80                 move(source_path, destination_path)
  81             else:
  82                 raise
  83     else:
  84         log.trace("cannot rename; source path does not exist '%s'", source_path)
  85 
  86 
  87 def backoff_rename(source_path, destination_path, force=False):
  88     exp_backoff_fn(rename, source_path, destination_path, force)
  89 
  90 
  91 def touch(path, mkdir=False, sudo_safe=False):
  92     # sudo_safe: use any time `path` is within the user's home directory
  93     # returns:
  94     #   True if the file did not exist but was created
  95     #   False if the file already existed
  96     # raises: NotWritableError, which is also an OSError having attached errno
  97     try:
  98         path = expand(path)
  99         log.trace("touching path %s", path)
  100         if lexists(path):
  101             os.utime(path, None)
  102             return True
  103         else:
  104             dirpath = dirname(path)
  105             if not isdir(dirpath) and mkdir:
  106                 if sudo_safe:
  107                     mkdir_p_sudo_safe(dirpath)
  108                 else:
  109                     mkdir_p(dirpath)
  110             else:
  111                 assert isdir(dirname(path))
  112             try:
  113                 fh = open(path, 'a')
  114             except:
  115                 raise
  116             else:
  117                 fh.close()
  118                 if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:
  119                     uid = int(os.environ['SUDO_UID'])
  120                     gid = int(os.environ.get('SUDO_GID', -1))
  121                     log.trace("chowning %s:%s %s", uid, gid, path)
  122                     os.chown(path, uid, gid)
  123                 return False
  124     except (IOError, OSError) as e:
  125         raise NotWritableError(path, e.errno, caused_by=e)
  126
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/conda/gateways/disk/update.py b/conda/gateways/disk/update.py
  --- a/conda/gateways/disk/update.py
  +++ b/conda/gateways/disk/update.py
  @@ -109,17 +109,17 @@
                       mkdir_p(dirpath)
               else:
                   assert isdir(dirname(path))
  -            try:
  -                fh = open(path, 'a')
  -            except:
  -                raise
  -            else:
  -                fh.close()
  -                if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:
  -                    uid = int(os.environ['SUDO_UID'])
  -                    gid = int(os.environ.get('SUDO_GID', -1))
  -                    log.trace("chowning %s:%s %s", uid, gid, path)
  -                    os.chown(path, uid, gid)
  -                return False
  +            with open(path, 'a'):
  +                pass
  +            # This chown call causes a false positive PermissionError to be
  +            # raised (similar to #7109) when called in an environment which
  +            # comes from sudo -u.
  +            #
  +            # if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:
  +            #     uid = int(os.environ['SUDO_UID'])
  +            #     gid = int(os.environ.get('SUDO_GID', -1))
  +            #     log.trace("chowning %s:%s %s", uid, gid, path)
  +            #     os.chown(path, uid, gid)
  +            return False
       except (IOError, OSError) as e:
           raise NotWritableError(path, e.errno, caused_by=e)
  
verification_info: {"golden_diff": "diff --git a/conda/gateways/disk/update.py b/conda/gateways/disk/update.py\n--- a/conda/gateways/disk/update.py\n+++ b/conda/gateways/disk/update.py\n@@ -109,17 +109,17 @@\n                     mkdir_p(dirpath)\n             else:\n                 assert isdir(dirname(path))\n-            try:\n-                fh = open(path, 'a')\n-            except:\n-                raise\n-            else:\n-                fh.close()\n-                if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:\n-                    uid = int(os.environ['SUDO_UID'])\n-                    gid = int(os.environ.get('SUDO_GID', -1))\n-                    log.trace(\"chowning %s:%s %s\", uid, gid, path)\n-                    os.chown(path, uid, gid)\n-                return False\n+            with open(path, 'a'):\n+                pass\n+            # This chown call causes a false positive PermissionError to be\n+            # raised (similar to #7109) when called in an environment which\n+            # comes from sudo -u.\n+            #\n+            # if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:\n+            #     uid = int(os.environ['SUDO_UID'])\n+            #     gid = int(os.environ.get('SUDO_GID', -1))\n+            #     log.trace(\"chowning %s:%s %s\", uid, gid, path)\n+            #     os.chown(path, uid, gid)\n+            return False\n     except (IOError, OSError) as e:\n         raise NotWritableError(path, e.errno, caused_by=e)\n", "issue": "conda raises bogus NotWritableError exception for a bogus attempt to chown to root\nThis isn't a dupe (well it is a dupe of #7109) but the issue still persists.\r\n\r\n#7180 fixed the problem in one section of code, but the same problematic snippet is present here:\r\n\r\nhttps://github.com/conda/conda/blob/master/conda/gateways/disk/update.py#L121\nconda raises bogus NotWritableError exception for a bogus attempt to chown to root\nThis isn't a dupe (well it is a dupe of #7109) but the issue still persists.\r\n\r\n#7180 fixed the problem in one section of code, but the same problematic snippet is present here:\r\n\r\nhttps://github.com/conda/conda/blob/master/conda/gateways/disk/update.py#L121\n", "before_files": [{"content": "# -*- coding: utf-8 -*-\n# Copyright (C) 2012 Anaconda, Inc\n# SPDX-License-Identifier: BSD-3-Clause\nfrom __future__ import absolute_import, division, print_function, unicode_literals\n\nfrom errno import EINVAL, EXDEV, EPERM\nfrom logging import getLogger\nimport os\nfrom os.path import dirname, isdir, split, basename, join, exists\nimport re\nfrom shutil import move\nfrom subprocess import Popen, PIPE\n\nfrom . import exp_backoff_fn, mkdir_p, mkdir_p_sudo_safe\nfrom .delete import rm_rf\nfrom .link import lexists\nfrom ...base.context import context\nfrom ...common.compat import on_win\nfrom ...common.path import expand\nfrom ...exceptions import NotWritableError\n\nlog = getLogger(__name__)\n\nSHEBANG_REGEX = re.compile(br'^(#!((?:\\\\ |[^ \\n\\r])+)(.*))')\n\n\nclass CancelOperation(Exception):\n    pass\n\n\ndef update_file_in_place_as_binary(file_full_path, callback):\n    # callback should be a callable that takes one positional argument, which is the\n    #   content of the file before updating\n    # this method updates the file in-place, without releasing the file lock\n    fh = None\n    try:\n        fh = exp_backoff_fn(open, file_full_path, 'rb+')\n        log.trace(\"in-place update path locked for %s\", file_full_path)\n        data = fh.read()\n        fh.seek(0)\n        try:\n            fh.write(callback(data))\n            fh.truncate()\n        except CancelOperation:\n            pass  # NOQA\n    finally:\n        if fh:\n            fh.close()\n\n\ndef rename(source_path, destination_path, force=False):\n    if lexists(destination_path) and force:\n        rm_rf(destination_path)\n    if lexists(source_path):\n        log.trace(\"renaming %s => %s\", source_path, destination_path)\n        try:\n            os.rename(source_path, destination_path)\n        except EnvironmentError as e:\n            if (on_win and dirname(source_path) == dirname(destination_path)\n                    and os.path.isfile(source_path)):\n                condabin_dir = join(context.conda_prefix, \"condabin\")\n                rename_script = join(condabin_dir, 'rename_tmp.bat')\n                if exists(rename_script):\n                    _dirname, _src_fn = split(source_path)\n                    _dest_fn = basename(destination_path)\n                    p = Popen(['cmd.exe', '/C', rename_script, _dirname,\n                               _src_fn, _dest_fn], stdout=PIPE, stderr=PIPE)\n                    stdout, stderr = p.communicate()\n                else:\n                    log.debug(\"{} is missing.  Conda was not installed correctly or has been \"\n                              \"corrupted.  Please file an issue on the conda github repo.\"\n                              .format(rename_script))\n            elif e.errno in (EINVAL, EXDEV, EPERM):\n                # https://github.com/conda/conda/issues/6811\n                # https://github.com/conda/conda/issues/6711\n                log.trace(\"Could not rename %s => %s due to errno [%s]. Falling back\"\n                          \" to copy/unlink\", source_path, destination_path, e.errno)\n                # https://github.com/moby/moby/issues/25409#issuecomment-238537855\n                # shutil.move() falls back to copy+unlink\n                move(source_path, destination_path)\n            else:\n                raise\n    else:\n        log.trace(\"cannot rename; source path does not exist '%s'\", source_path)\n\n\ndef backoff_rename(source_path, destination_path, force=False):\n    exp_backoff_fn(rename, source_path, destination_path, force)\n\n\ndef touch(path, mkdir=False, sudo_safe=False):\n    # sudo_safe: use any time `path` is within the user's home directory\n    # returns:\n    #   True if the file did not exist but was created\n    #   False if the file already existed\n    # raises: NotWritableError, which is also an OSError having attached errno\n    try:\n        path = expand(path)\n        log.trace(\"touching path %s\", path)\n        if lexists(path):\n            os.utime(path, None)\n            return True\n        else:\n            dirpath = dirname(path)\n            if not isdir(dirpath) and mkdir:\n                if sudo_safe:\n                    mkdir_p_sudo_safe(dirpath)\n                else:\n                    mkdir_p(dirpath)\n            else:\n                assert isdir(dirname(path))\n            try:\n                fh = open(path, 'a')\n            except:\n                raise\n            else:\n                fh.close()\n                if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:\n                    uid = int(os.environ['SUDO_UID'])\n                    gid = int(os.environ.get('SUDO_GID', -1))\n                    log.trace(\"chowning %s:%s %s\", uid, gid, path)\n                    os.chown(path, uid, gid)\n                return False\n    except (IOError, OSError) as e:\n        raise NotWritableError(path, e.errno, caused_by=e)\n", "path": "conda/gateways/disk/update.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\n# Copyright (C) 2012 Anaconda, Inc\n# SPDX-License-Identifier: BSD-3-Clause\nfrom __future__ import absolute_import, division, print_function, unicode_literals\n\nfrom errno import EINVAL, EXDEV, EPERM\nfrom logging import getLogger\nimport os\nfrom os.path import dirname, isdir, split, basename, join, exists\nimport re\nfrom shutil import move\nfrom subprocess import Popen, PIPE\n\nfrom . import exp_backoff_fn, mkdir_p, mkdir_p_sudo_safe\nfrom .delete import rm_rf\nfrom .link import lexists\nfrom ...base.context import context\nfrom ...common.compat import on_win\nfrom ...common.path import expand\nfrom ...exceptions import NotWritableError\n\nlog = getLogger(__name__)\n\nSHEBANG_REGEX = re.compile(br'^(#!((?:\\\\ |[^ \\n\\r])+)(.*))')\n\n\nclass CancelOperation(Exception):\n    pass\n\n\ndef update_file_in_place_as_binary(file_full_path, callback):\n    # callback should be a callable that takes one positional argument, which is the\n    #   content of the file before updating\n    # this method updates the file in-place, without releasing the file lock\n    fh = None\n    try:\n        fh = exp_backoff_fn(open, file_full_path, 'rb+')\n        log.trace(\"in-place update path locked for %s\", file_full_path)\n        data = fh.read()\n        fh.seek(0)\n        try:\n            fh.write(callback(data))\n            fh.truncate()\n        except CancelOperation:\n            pass  # NOQA\n    finally:\n        if fh:\n            fh.close()\n\n\ndef rename(source_path, destination_path, force=False):\n    if lexists(destination_path) and force:\n        rm_rf(destination_path)\n    if lexists(source_path):\n        log.trace(\"renaming %s => %s\", source_path, destination_path)\n        try:\n            os.rename(source_path, destination_path)\n        except EnvironmentError as e:\n            if (on_win and dirname(source_path) == dirname(destination_path)\n                    and os.path.isfile(source_path)):\n                condabin_dir = join(context.conda_prefix, \"condabin\")\n                rename_script = join(condabin_dir, 'rename_tmp.bat')\n                if exists(rename_script):\n                    _dirname, _src_fn = split(source_path)\n                    _dest_fn = basename(destination_path)\n                    p = Popen(['cmd.exe', '/C', rename_script, _dirname,\n                               _src_fn, _dest_fn], stdout=PIPE, stderr=PIPE)\n                    stdout, stderr = p.communicate()\n                else:\n                    log.debug(\"{} is missing.  Conda was not installed correctly or has been \"\n                              \"corrupted.  Please file an issue on the conda github repo.\"\n                              .format(rename_script))\n            elif e.errno in (EINVAL, EXDEV, EPERM):\n                # https://github.com/conda/conda/issues/6811\n                # https://github.com/conda/conda/issues/6711\n                log.trace(\"Could not rename %s => %s due to errno [%s]. Falling back\"\n                          \" to copy/unlink\", source_path, destination_path, e.errno)\n                # https://github.com/moby/moby/issues/25409#issuecomment-238537855\n                # shutil.move() falls back to copy+unlink\n                move(source_path, destination_path)\n            else:\n                raise\n    else:\n        log.trace(\"cannot rename; source path does not exist '%s'\", source_path)\n\n\ndef backoff_rename(source_path, destination_path, force=False):\n    exp_backoff_fn(rename, source_path, destination_path, force)\n\n\ndef touch(path, mkdir=False, sudo_safe=False):\n    # sudo_safe: use any time `path` is within the user's home directory\n    # returns:\n    #   True if the file did not exist but was created\n    #   False if the file already existed\n    # raises: NotWritableError, which is also an OSError having attached errno\n    try:\n        path = expand(path)\n        log.trace(\"touching path %s\", path)\n        if lexists(path):\n            os.utime(path, None)\n            return True\n        else:\n            dirpath = dirname(path)\n            if not isdir(dirpath) and mkdir:\n                if sudo_safe:\n                    mkdir_p_sudo_safe(dirpath)\n                else:\n                    mkdir_p(dirpath)\n            else:\n                assert isdir(dirname(path))\n            with open(path, 'a'):\n                pass\n            # This chown call causes a false positive PermissionError to be\n            # raised (similar to #7109) when called in an environment which\n            # comes from sudo -u.\n            #\n            # if sudo_safe and not on_win and os.environ.get('SUDO_UID') is not None:\n            #     uid = int(os.environ['SUDO_UID'])\n            #     gid = int(os.environ.get('SUDO_GID', -1))\n            #     log.trace(\"chowning %s:%s %s\", uid, gid, path)\n            #     os.chown(path, uid, gid)\n            return False\n    except (IOError, OSError) as e:\n        raise NotWritableError(path, e.errno, caused_by=e)\n", "path": "conda/gateways/disk/update.py"}]}