The pam_get_user function returns the name of the user specified by
pam_start(3). If no user was specified it 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.
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for Linux) project. Information about the project can be found at
⟨https://fedorahosted.org/linux-pam/⟩. If you have a bug report for
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Linux-PAM Manual 04/01/2016 PAM_GET_USER(3)