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Avoid a race in creating the idiotic_design symlink

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This commit is contained in:
Kovid Goyal 2022-03-11 07:37:44 +05:30
parent cac2c153c2
commit c9ef5c0715
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 10 additions and 3 deletions
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13
kittens/ssh/main.py
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@ -451,9 +451,16 @@ def connection_sharing_args(opts: SSHOptions, kitty_pid: int) -> List[str]:
# /Users/WHY_DOES_ANYONE_USE_MACOS/Library/Caches/APPLE_ARE_IDIOTIC
if len(rd) > 35 and os.path.isdir('/tmp'):
idiotic_design = '/tmp/kssh-rdir'
with suppress(FileNotFoundError):
os.unlink(idiotic_design)
os.symlink(rd, idiotic_design)
try:
os.symlink(rd, idiotic_design)
except FileExistsError:
try:
dest = os.readlink(idiotic_design)
except OSError as e:
raise ValueError(f'The {idiotic_design} symlink could not be created as something with that name exists already') from e
else:
if dest != rd:
raise ValueError(f'The {idiotic_design} symlink exists and points to the incorrect location: {dest}')
rd = idiotic_design
cp = os.path.join(rd, ssh_control_master_template.format(kitty_pid=kitty_pid, ssh_placeholder='%C'))