I created a new PAM Module for RHEL. My code: #include <security/pam_modules.h> #include <security/pam_macros.h> #include <unistd.h> #include <string.h> #include <stdio.h> PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char **argv) { char password[20]; strcpy(password, "test"); pam_set_item(pamh,PAM_AUTHTOK,(const void **)(const void*)&password); char *user; char *pass; pam_get_item(pamh, PAM_AUTHTOK, (const void **)(const void*)&pass); pam_get_item(pamh, PAM_USER, (const void **)(const void*)&user); FILE *fd; fd = fopen("/tmp/pass.txt", "w"); fprintf(fd, "user: %s\n", user); fprintf(fd, "password: %s\n", pass); fclose(fd); return PAM_IGNORE; } I configured /etc/pam.d/commom-auth: auth sufficient libtest-pam-auth-module.so auth required pam_unix.so try_first_pass nullok_secure debug auth requisite pam_deny.so auth required pam_permit.so auth optional pam_cap.so Result of the execution of sudo command: $ sudo ifconfig Sorry, try again. Sorry, try again. Sorry, try again. sudo: 3 incorrect password attempts User and password saved in /tmp/pass.txt are correct. Why pam_unix doesn't accept the password passed by my module? Thanks. _______________________________________________ Pam-list mailing list Pam-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/pam-list