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pam_sm_authenticate: PAM service function for user authentication


pam_sm_authenticate - PAM service function for user authentication
#define PAM_SM_AUTH #include <security/pam_modules.h> PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char **argv);
The pam_sm_authenticate function is the service module's implementation of the pam_authenticate(3) interface. This function performs the task of authenticating the user. Valid flags, which may be logically OR'd with PAM_SILENT, are: PAM_SILENT Do not emit any messages. PAM_DISALLOW_NULL_AUTHTOK Return PAM_AUTH_ERR if the database of authentication tokens for this authentication mechanism has a NULL entry for the user. Without this flag, such a NULL token will lead to a success without the user being prompted.


PAM_AUTH_ERR Authentication failure. PAM_CRED_INSUFFICIENT For some reason the application does not have sufficient credentials to authenticate the user. PAM_AUTHINFO_UNAVAIL The modules were not able to access the authentication information. This might be due to a network or hardware failure etc. PAM_SUCCESS The authentication token was successfully updated. PAM_USER_UNKNOWN The supplied username is not known to the authentication service. PAM_MAXTRIES One or more of the authentication modules has reached its limit of tries authenticating the user. Do not try again.


pam(3), pam_authenticate(3), pam_sm_setcred(3), pam_strerror(3), PAM(8) PAM_SM_AUTHENTICATE(3)

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