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Check that HOMEBREW_TEMP permits executing programs #4684

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Aug 14, 2018
Merged

Check that HOMEBREW_TEMP permits executing programs #4684

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17 changes: 17 additions & 0 deletions Library/Homebrew/extend/os/linux/diagnostic.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,23 @@ def check_tmpdir_sticky_bit
EOS
end

def check_tmpdir_executable
f = Tempfile.new(%w[homebrew_check_tmpdir_executable .sh], HOMEBREW_TEMP)
f.write "#!/bin/sh\n"
f.chmod 0700
f.close
return if system f.path
<<~EOS.undent
The directory #{HOMEBREW_TEMP} does not permit executing
programs. It is likely mounted as "noexec". Please set HOMEBREW_TEMP
in your #{shell_profile} to a different directory, for example:
export HOMEBREW_TEMP=~/tmp
echo 'export HOMEBREW_TEMP=~/tmp' >> #{shell_profile}
EOS
ensure
f.unlink
end

def check_xdg_data_dirs
return if ENV["XDG_DATA_DIRS"].to_s.empty?
return if ENV["XDG_DATA_DIRS"].split("/").include?(HOMEBREW_PREFIX/"share")
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