static struct group *nss_getgrgid(gid_t gid)
{
NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
size_t , int *) = find_fn("getgrgid_r");
static struct group grp;
static char *buf;
static int buflen = 1000;
NSS_STATUS status;
if (!_nss_getgrgid_r)
return NULL;
if (!buf)
buf = SMB_MALLOC(buflen);
again:
status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
if (status == NSS_STATUS_TRYAGAIN) {
buflen *= 2;
buf = SMB_REALLOC(buf, buflen);
if (!buf) {
return NULL;
}
goto again;
}
if (status == NSS_STATUS_NOTFOUND) {
return NULL;
}
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("getgrgid", status);
return NULL;
}
return &grp;
}
static struct group *nss_getgrnam(const char *name)
{
NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
size_t , int *) = find_fn("getgrnam_r");
static struct group grp;
static char *buf;
static int buflen = 1000;
NSS_STATUS status;
if (!buf) buf = malloc(buflen);
again:
status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
if (status == NSS_STATUS_TRYAGAIN) {
buflen *= 2;
buf = realloc(buf, buflen);
goto again;
}
if (status == NSS_STATUS_NOTFOUND) {
return NULL;
}
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("getgrnam", status);
return NULL;
}
return &grp;
}
static void nss_endgrent(void)
{
NSS_STATUS (*_nss_endgrent)(void) = find_fn("endgrent");
NSS_STATUS status;
status = _nss_endgrent();
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("endgrent", status);
}
}
static void nss_setpwent(void)
{
NSS_STATUS (*_nss_setpwent)(void) = find_fn("setpwent");
NSS_STATUS status;
if (!_nss_setpwent)
return;
status = _nss_setpwent();
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("setpwent", status);
}
}
static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
{
NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
long int *, gid_t **, long int , int *) =
find_fn("initgroups_dyn");
NSS_STATUS status;
if (!_nss_initgroups) return NSS_STATUS_UNAVAIL;
status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("initgroups", status);
}
return status;
}
static struct passwd *nss_getpwnam(const char *name)
{
NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *,
size_t , int *) = find_fn("getpwnam_r");
static struct passwd pwd;
static char buf[1000];
NSS_STATUS status;
status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
if (status == NSS_STATUS_NOTFOUND) {
return NULL;
}
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("getpwnam", status);
return NULL;
}
return &pwd;
}
static struct passwd *nss_getpwent(void)
{
NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *,
size_t , int *) = find_fn("getpwent_r");
static struct passwd pwd;
static char buf[1000];
NSS_STATUS status;
if (!_nss_getpwent_r)
return NULL;
status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
if (status == NSS_STATUS_NOTFOUND) {
return NULL;
}
if (status != NSS_STATUS_SUCCESS) {
report_nss_error("getpwent", status);
return NULL;
}
return &pwd;
}
