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#include <../pthread.h>
#include <pwd.h>
#include <sys/types.h>
#include <string.h>
static pthread_mutex_t getpw_mutex = PTHREAD_MUTEX_INITIALIZER;
static int
convert (struct passwd *ret, struct passwd *result,
char *buf, int buflen)
{
int len;
if (!buf) return -1;
*result = *ret;
/* user name */
result->pw_name = (char *) buf;
len = strlen (ret->pw_name) + 1;
if (len > buflen) return -1;
buflen -= len;
buf += len;
strcpy (result->pw_name, ret->pw_name);
/* user password */
result->pw_passwd = (char *) buf;
len = strlen (ret->pw_passwd) + 1;
if (len > buflen) return -1;
buflen -= len;
buf += len;
strcpy (result->pw_passwd, ret->pw_passwd);
/* real name */
result->pw_gecos = (char *) buf;
len = strlen (ret->pw_gecos) + 1;
if (len > buflen) return -1;
buflen -= len;
buf += len;
strcpy (result->pw_gecos, ret->pw_gecos);
/* home directory */
result->pw_dir = (char *) buf;
len = strlen (ret->pw_dir) + 1;
if (len > buflen) return -1;
buflen -= len;
buf += len;
strcpy (result->pw_dir, ret->pw_dir);
/* shell program */
result->pw_shell = (char *) buf;
len = strlen (ret->pw_shell) + 1;
if (len > buflen) return -1;
buflen -= len;
buf += len;
strcpy (result->pw_shell, ret->pw_shell);
return 0;
}
int
getpwnam_r (const char *name,
struct passwd *result, char *buffer, size_t buflen)
{
struct passwd *ret;
pthread_mutex_lock (&getpw_mutex);
ret = getpwnam (name);
if (!ret ||
convert (ret, result, buffer, buflen) != 0)
{
result = NULL;
}
pthread_mutex_unlock (&getpw_mutex);
return 0;
}
int
getpwuid_r (uid_t uid,
struct passwd *result, char *buffer, size_t buflen)
{
struct passwd *ret;
pthread_mutex_lock (&getpw_mutex);
ret = getpwuid(uid);
if (!ret ||
convert (ret, result, buffer, buflen) != 0)
{
result = NULL;
}
pthread_mutex_unlock (&getpw_mutex);
return 0;
}
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