/**

 * getpwnam_error.c

 * Copyright (C) 2008 Markus Broeker

 */

#include <stdio.h>

#include <stdlib.h>

#include <pwd.h>

/**

==7531==

==7531== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 25 from 2)

==7531== malloc/free: in use at exit: 156 bytes in 11 blocks.

==7531== malloc/free: 66 allocs, 55 frees, 6,342 bytes allocated.

==7531== For counts of detected errors, rerun with: -v

==7531== searching for pointers to 11 not-freed blocks.

==7531== checked 60,444 bytes.

==7531==

==7531== 156 (36 direct, 120 indirect) bytes in 1 blocks are definitely lost in loss record 1 of 3

==7531==    at 0x4022D6E: malloc (vg_replace_malloc.c:207)

==7531==    by 0x412C7E0: (within /lib/i686/cmov/libc-2.7.so)

==7531==    by 0x412D0DB: __nss_database_lookup (in /lib/i686/cmov/libc-2.7.so)

==7531==    by 0x4596F5B: ???

==7531==    by 0x4597CF6: ???

==7531==    by 0x40D3BD1: getpwnam_r (in /lib/i686/cmov/libc-2.7.so)

==7531==    by 0x40D3646: getpwnam (in /lib/i686/cmov/libc-2.7.so)

==7531==    by 0x8048478: main (getpwnam_error.c:48)

==7531==

==7531== LEAK SUMMARY:

==7531==    definitely lost: 36 bytes in 1 blocks.

==7531==    indirectly lost: 120 bytes in 10 blocks.

==7531==      possibly lost: 0 bytes in 0 blocks.

==7531==    still reachable: 0 bytes in 0 blocks.

==7531==         suppressed: 0 bytes in 0 blocks.

*/

/*

 * LD_PRELOAD=/lib/libnss_compat.so.2 valgrind --leak-check=full \

 * ./getpwnam_error

 * fixes it - Many thanks to telexicon for reporting this...

 *

 */

int main (int argc, char **argv)

{

    struct passwd *pwd;

    char *user;

    if ((user = getenv ("USER")) == NULL) {

        printf ("This system isn't supported yet\n");

        return EXIT_FAILURE;

    }

    if ((pwd = getpwnam (user)) == NULL) {

        printf ("I wasn't able to retrieve the neccessary data\n");

        return EXIT_FAILURE;

    }

    printf ("Your full name: %s\n", pwd->pw_gecos);

    return EXIT_SUCCESS;

}