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getlogin_r: fix missing fallback if loginuid is unset (bug 30235)

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When /proc/self/loginuid is not set, we should still fall back to using
the traditional utmp lookup, instead of failing right away.
This commit is contained in:
Andreas Schwab 2023-03-15 11:44:24 +01:00
parent 24cdd6c71d
commit 0d83b349fa
1 changed files with 1 additions and 4 deletions
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5
sysdeps/unix/sysv/linux/getlogin_r.c
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@ -59,10 +59,7 @@ __getlogin_r_loginuid (char *name, size_t namesize)
value of, (uid_t) -1, so check if that value is set and return early to
avoid making unneeded nss lookups. */
if (uid == (uid_t) -1)
{
__set_errno (ENXIO);
return ENXIO;
}
return -1;
struct passwd pwd;
struct passwd *tpwd;