Код:
#include <security/pam_appl.h>
#include <security/pam_misc.h>
#include <stdio.h>
static struct pam_conv conv = {
misc_conv,
NULL
};
int main(int argc, char *argv[])
{
pam_handle_t *pamh=NULL;
int retval;
const char *user="nobody";
if(argc == 2) {
user = argv[1];
}
if(argc > 2) {
fprintf(stderr, "Usage: check_user [username]\n");
exit(1);
}
retval = pam_start("check_user", user, &conv, &pamh);
if (retval == PAM_SUCCESS)
retval = pam_authenticate(pamh, 0); /* is user really user? */
if (retval == PAM_SUCCESS)
retval = pam_acct_mgmt(pamh, 0); /* permitted access? */
/* This is where we have been authorized or not. */
if (retval == PAM_SUCCESS) {
fprintf(stdout, "Authenticated\n");
} else {
fprintf(stdout, "Not Authenticated\n");
}
if (pam_end(pamh,retval) != PAM_SUCCESS) { /* close Linux-PAM */
pamh = NULL;
fprintf(stderr, "check_user: failed to release authenticator\n");
exit(1);
}
return ( retval == PAM_SUCCESS ? 0:1 ); /* indicate success */
}
Две библиотеки, которые я добавил:
В / usr / include / security / У меня есть:
_pam_compat.h
_pam_macros.h
_pam_types.h
pam_appl.h
pam_client.h
pam_ext.h
pam_filter.h
pam_misc.h
pam_modules.h
pam_modutil.h
Я компилирую с: gcc -o check_user -lpam check_user.c
И я получаю:
/usr/bin/ld: /tmp/cc9ldItB.o:(.data.rel+0x0): undefined reference to `misc_conv'
collect2: error: ld returned 1 exit status
Так почему я получаю undefined reference to "misc_conv'
когда libpam0g-dev
был добавлен?