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getpass.0
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1992-08-10
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GETPASS(3) UNIX Programmer's Manual GETPASS(3)
NNAAMMEE
ggeettppaassss - get a password
SSYYNNOOPPSSIISS
##iinncclluuddee <<ppwwdd..hh>>
##iinncclluuddee <<uunniissttdd..hh>>
_c_h_a_r _*
ggeettppaassss(_c_o_n_s_t _c_h_a_r _*_p_r_o_m_p_t)
DDEESSCCRRIIPPTTIIOONN
The ggeettppaassss() function displays a prompt to, and reads in a password
from, _/_d_e_v_/_t_t_y. If this file is not accessible, ggeettppaassss displays the
prompt on the standard error output and reads from the standard input.
The password may be up to _PASSWORD_LEN (currently 128) characters in
length. Any additional characters and the terminating newline character
are discarded.
GGeettppaassss turns off character echoing while reading the password.
RREETTUURRNN VVAALLUUEESS
GGeettppaassss returns a pointer to the null terminated password.
FFIILLEESS
/dev/tty
SSEEEE AALLSSOO
crypt(3)
HHIISSTTOORRYY
A ggeettppaassss function appeared in Version 7 AT&T UNIX.
BBUUGGSS
The ggeettppaassss function leaves its result in an internal static object and
returns a pointer to that object. Subsequent calls to ggeettppaassss will modi¡
fy the same object.
The calling process should zero the password as soon as possible to avoid
leaving the cleartext password visible in the process's address space.
BSD Experimental May 21, 1991 1