[Bug 1032740] [NEW] libc6 isn't returning a valid user in char *getlogin()

[Jayson Reis]

Public bug reported:

A simple c program in my machine demonstrate what is happening.

#include <unistd.h>
#include <stdio.h>

int main( int argc, char *argv[] ) {
    char *name;
    name = getlogin();
    if (name != NULL)
        printf("%s\n", name);
    else
        printf("name is null\n");
    return 0;
}

I'm just compiling and running it and name aways come as NULL;
Note that i'm not a C developer, i got this when my python tests broke with os.getlogin.

Thank you

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libc6 2.15-0ubuntu10
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic-pae 3.2.21
Uname: Linux 3.2.0-27-generic-pae i686
ApportVersion: 2.0.1-0ubuntu11
Architecture: i386
Date: Fri Aug  3 14:16:20 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: eglibc
UpgradeStatus: Upgraded to precise on 2012-07-02 (32 days ago)

** Affects: eglibc (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise running-unity

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https://bugs.launchpad.net/bugs/1032740

Title:
  libc6 isn't returning a valid user in char *getlogin()

Status in “eglibc” package in Ubuntu:
  New

Bug description:
  A simple c program in my machine demonstrate what is happening.

  #include <unistd.h>
  #include <stdio.h>

  int main( int argc, char *argv[] ) {
      char *name;
      name = getlogin();
      if (name != NULL)
          printf("%s\n", name);
      else
          printf("name is null\n");
      return 0;
  }

  I'm just compiling and running it and name aways come as NULL;
  Note that i'm not a C developer, i got this when my python tests broke with os.getlogin.

  Thank you

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: libc6 2.15-0ubuntu10
  ProcVersionSignature: Ubuntu 3.2.0-27.43-generic-pae 3.2.21
  Uname: Linux 3.2.0-27-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu11
  Architecture: i386
  Date: Fri Aug  3 14:16:20 2012
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: eglibc
  UpgradeStatus: Upgraded to precise on 2012-07-02 (32 days ago)

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