D12937: Drop privileges when reading the salt file

[Albert Astals Cid]

aacid added inline comments.

INLINE COMMENTS

> dakon wrote in pam_kwallet.c:749
> please use WIFEXITED and WEXITSTATUS here. The compiler is free to optimize that into a simple compare if that's what it is, but you are now relying on an implementation detail of that status code.

we're assuming status 0 and != 0 in other places of the code, i'll suggest to also fix this separately in a new patch

REPOSITORY
  R107 KWallet PAM Integration

REVISION DETAIL
  https://phabricator.kde.org/D12937

To: aacid, dakon
Cc: dakon, mgerstner, fvogt, plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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