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PAM_GET_USER
Section: Linux-PAM Manual (3) Updated: 02/02/2026 Index
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NAME
pam_get_user - get user name
SYNOPSIS
#include <security/pam_modules.h>
-
int pam_get_user(const pam_handle_t *pamh, const char **user, const char *prompt);
DESCRIPTION
The
pam_get_user
function returns the name of the user specified by
pam_start(3). If no user was specified it returns what
pam_get_item (pamh, PAM_USER, ... );
would have returned. If this is NULL it obtains the username via the
pam_conv(3)
mechanism, it prompts the user with the first non-NULL string in the following list:
-
*
The
prompt
argument passed to the function.
-
*
What is returned by pam_get_item (pamh, PAM_USER_PROMPT, ... );
-
*
The default prompt: "login: "
By whatever means the username is obtained, a pointer to it is returned as the contents of
*user. Note, this memory should
not
be
free()'d or
modified
by the module.
This function sets the
PAM_USER
item associated with the
pam_set_item(3)
and
pam_get_item(3)
functions.
RETURN VALUES
PAM_SUCCESS
-
User name was successful retrieved.
PAM_SYSTEM_ERR
-
A NULL pointer was submitted.
PAM_CONV_ERR
-
The conversation method supplied by the application failed to obtain the username.
PAM_BUF_ERR
-
Memory buffer error.
PAM_ABORT
-
Error resuming an old conversation.
PAM_CONV_AGAIN
-
The conversation method supplied by the application is waiting for an event.
SEE ALSO
pam_end(3),
pam_get_item(3),
pam_set_item(3),
pam_strerror(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- SEE ALSO
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