diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/getlogin_r.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/getlogin_r.c b/sysdeps/unix/sysv/linux/getlogin_r.c index 73ea14c..1458771 100644 --- a/sysdeps/unix/sysv/linux/getlogin_r.c +++ b/sysdeps/unix/sysv/linux/getlogin_r.c @@ -55,6 +55,15 @@ __getlogin_r_loginuid (char *name, size_t namesize) endp == uidbuf || *endp != '\0')) return -1; + /* If there is no login uid, linux sets /proc/self/loginid to the sentinel + 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; + } + struct passwd pwd; struct passwd *tpwd; int result = 0; |