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Change EPERM into EACCES for file access #911

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Sep 15, 2021
Merged

Change EPERM into EACCES for file access #911

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6 changes: 3 additions & 3 deletions dmoj/cptbox/isolate.py
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Original file line number Diff line number Diff line change
Expand Up @@ -293,18 +293,18 @@ def _file_access_check(
normalized,
real,
)
return file, ACCESS_EPERM
return file, ACCESS_EACCES

if not fs_jail.check(normalized):
return normalized, ACCESS_EPERM
return normalized, ACCESS_EACCES

if normalized != real:
proc_dir = f'/proc/{debugger.pid}'
if real.startswith(proc_dir):
real = os.path.join('/proc/self', os.path.relpath(real, proc_dir))

if not fs_jail.check(real):
return real, ACCESS_EPERM
return real, ACCESS_EACCES

return real, None

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