Benno Schulenberg wrote... > Out of curiosity: have you actually run into this? Or is this just > from code inspection?
Yes, after code inspection[*]:
$ ps ax | grep nano
403434 ? S+ 0:00 nano /tmp/foo
$ printf '%x\n' $(pidof nano)
627ea
$ hd /tmp/.foo.swp | head -2
00000000 62 30 6e 61 6e 6f 20 32 2e 36 2e 31 00 00 00 00 |b0nano 2.6.1....|
00000010 00 00 00 00 00 00 00 00 ea 27 00 00 63 62 69 65 |.........'..cbie|
^^ ^^
Or, using bleeding-edge file(1)
$ file /tmp/.foo.swp
/tmp/.foo.swp: Nano swap file, pid 10218, user cbiedl, host <redacted>, file
/tmp/foo, modified
^^^^^ ups!
> If you've actually run into this, please try also with vim. Does it
> display the correct (32-bit) PID? (Because, as far as I know, this
> lock-file stuff was "copied" from vim. But if vim does it correctly,
> then it was copied incompletely and it will get fixed.)
vim does things right:
$ ps ax | grep vim
403859 ? S+ 0:00 vim /tmp/foo
$ printf '%x\n' $(pidof vim)
62993
$ hd /tmp/.foo.swp | head -2
00000000 62 30 56 49 4d 20 37 2e 34 00 00 00 00 10 00 00 |b0VIM 7.4.......|
00000010 00 00 00 00 00 00 00 00 93 29 06 00 63 62 69 65 |.........)..cbie|
^^ ^^ ^^
$ file /tmp/.foo.swp
/home/cbiedl/.tmp/foo.swp: Vim swap file, version 7.4, pid 403859, user cbiedl,
host <redacted>, file /tmp/foo, modified
Christoph
[*] Part of the work for #803219
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