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#include <stdlib.h>
#include <stdio.h>
#include <pwd.h>
#include <unistd.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
int main()
{
struct passwd pwd, *result = NULL;
char *buf;
size_t bufsize;
int s;
bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
assert(bufsize > 0 && bufsize < 0x100000);
buf = malloc(bufsize);
assert(buf);
s = getpwnam_r("root", &pwd, buf, bufsize, &result);
assert(!s);
assert(pwd.pw_uid == 0);
assert(!strcmp(pwd.pw_name, "root"));
assert(strlen(pwd.pw_passwd) <= 1000);
s = getpwuid_r(0, &pwd, buf, bufsize, &result);
assert(!s);
assert(pwd.pw_uid == 0);
assert(!strcmp(pwd.pw_name, "root"));
assert(strlen(pwd.pw_passwd) <= 1000);
result = getpwnam("root");
assert(result);
assert(result->pw_uid == 0);
assert(!strcmp(result->pw_name, "root"));
assert(strlen(result->pw_passwd) <= 1000);
result = getpwuid(0);
assert(result);
assert(result->pw_uid == 0);
assert(!strcmp(result->pw_name, "root"));
assert(strlen(result->pw_passwd) <= 1000);
errno = 0;
setpwent();
assert(errno == 0);
errno = 0;
result = getpwent();
assert(result);
pwd = *result;
pwd.pw_name = strdup(result->pw_name);
pwd.pw_passwd = strdup(result->pw_passwd);
pwd.pw_gecos = strdup(result->pw_gecos);
pwd.pw_dir = strdup(result->pw_dir);
pwd.pw_shell = strdup(result->pw_shell);
assert(pwd.pw_name);
assert(pwd.pw_passwd);
assert(pwd.pw_gecos);
assert(pwd.pw_dir);
assert(pwd.pw_shell);
errno = 0;
setpwent();
assert(errno == 0);
errno = 0;
result = getpwent();
assert(result);
assert(!strcmp(pwd.pw_name, result->pw_name));
assert(!strcmp(pwd.pw_passwd, result->pw_passwd));
assert(!strcmp(pwd.pw_gecos, result->pw_gecos));
assert(!strcmp(pwd.pw_dir, result->pw_dir));
assert(!strcmp(pwd.pw_shell, result->pw_shell));
assert(pwd.pw_uid == result->pw_uid);
assert(pwd.pw_gid == result->pw_gid);
free(buf);
free(pwd.pw_name);
free(pwd.pw_passwd);
free(pwd.pw_gecos);
free(pwd.pw_dir);
free(pwd.pw_shell);
}
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