pwuid error on ./l32/q

Community Support
1

Cannot start process. ./l32/q prints ‘pwuid’ and exists. Has anyone experienced that kind of error?

Max

2

listed here

http://code.kx.com/wiki/Errors

maybe try ensuring the 32bit libs are installed

apt-get install ia32-libs

3

I think it is something else. All links are resolved

 ldd ./l32/q

linux-gate.so.1 =>  (0xf774d000)

libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xf76ff000)

libnsl.so.1 => /lib/i386-linux-gnu/libnsl.so.1 (0xf76e5000)

libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf76df000)

libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xf76c4000)

libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf751a000)

/lib/ld-linux.so.2 (0xf774e000)

4

ok, something’s misconfigured on your linux system in that it can’t determine the username.
here is similar code to help isolate the issue

$more a.c

#include<pwd.h>

#include<sys/types.h>

#include<stdio.h>

int main(int argc,char*argv){

  struct passwd*p=getpwuid(getuid());

  if(p)

    printf(“user:%s\n”,p->pw_name);

  else

    perror(“pwuid:”);

  return 0;

 }

$gcc a.c

$./a.out

5

Ubuntu 64bit. 

if compile with gcc -m32 it fails if with -m64 it returns username. 

g++ -m64 ./getpwuid.cpp 

/a.out max

Not found

~/q/getpwuid$ g++ -m64 ./getpwuid.cpp 

~/q/getpwuid$ ./a.out max

Name: Max ; UID: 10999

I think our IT configured desktop to use LDAP or some other mechanism to authenticate user.

cat /etc/nsswitch.conf

passwd:     files sss

shadow:     files sss

group:      files sss

Seems like ia32 stdc supports only /etc/passwd . 

6

ok, ask your sys admins to install the missing libraries so that 32bit apps can run correctly on your 64bit system.
if you run

strace q

it should reveal which library is missing

e.g.
open(“/lib/tls/i686/sse2/libnss_sss.so.2”, O_RDONLY) = -1 ENOENT (No such file or directory)

then identify which package that belongs to, and have sys admin install it.

thanks

7

Getting the same error.
Has this been resolved? Does installing 32 bit binaries help?

-Pratyush

8

I’ve found on ubuntu all i need to do is

sudo apt-get install gcc-multilib

9

WIll try this
Thanks

10

Took me sometime searching on the internet but finally got this working on Ubuntu by installing nscd - hope that helps someone