| getpass.3 (712dc76e87bd7bbeb3f781e690886b69a1f9c5ca) | getpass.3 (bf5a138ec42c842d9402e45de366f7b71e267e42) |
|---|---|
| 1.\" Copyright (c) 1989, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 34 unchanged lines hidden (view full) --- 43.Ft char * 44.Fn getpass "const char *prompt" 45.Sh DESCRIPTION 46The 47.Fn getpass 48function displays a prompt to, and reads in a password from, 49.Pa /dev/tty . 50If this file is not accessible, | 1.\" Copyright (c) 1989, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 34 unchanged lines hidden (view full) --- 43.Ft char * 44.Fn getpass "const char *prompt" 45.Sh DESCRIPTION 46The 47.Fn getpass 48function displays a prompt to, and reads in a password from, 49.Pa /dev/tty . 50If this file is not accessible, |
| 51.Nm getpass | 51.Fn getpass |
| 52displays the prompt on the standard error output and reads from the standard 53input. 54.Pp 55The password may be up to _PASSWORD_LEN (currently 128) 56characters in length. 57Any additional 58characters and the terminating newline character are discarded. 59.Pp | 52displays the prompt on the standard error output and reads from the standard 53input. 54.Pp 55The password may be up to _PASSWORD_LEN (currently 128) 56characters in length. 57Any additional 58characters and the terminating newline character are discarded. 59.Pp |
| 60.Nm Getpass 61turns off character echoing while reading the password. | 60The 61.Fn getpass 62function turns off character echoing while reading the password. |
| 62.Pp 63.Sh RETURN VALUES | 63.Pp 64.Sh RETURN VALUES |
| 64.Nm Getpass 65returns a pointer to the null terminated password. | 65The 66.Fn getpass 67function returns a pointer to the null terminated password. |
| 66.Sh FILES 67.Bl -tag -width /dev/tty -compact 68.It Pa /dev/tty 69.El 70.Sh SEE ALSO 71.Xr crypt 3 72.Sh HISTORY 73A | 68.Sh FILES 69.Bl -tag -width /dev/tty -compact 70.It Pa /dev/tty 71.El 72.Sh SEE ALSO 73.Xr crypt 3 74.Sh HISTORY 75A |
| 74.Nm getpass | 76.Fn getpass |
| 75function appeared in 76.At v7 . 77.Sh BUGS 78The | 77function appeared in 78.At v7 . 79.Sh BUGS 80The |
| 79.Nm getpass | 81.Fn getpass |
| 80function leaves its result in an internal static object and returns 81a pointer to that object. 82Subsequent calls to | 82function leaves its result in an internal static object and returns 83a pointer to that object. 84Subsequent calls to |
| 83.Nm getpass | 85.Fn getpass |
| 84will modify the same object. 85.Pp 86The calling process should zero the password as soon as possible to 87avoid leaving the cleartext password visible in the process's address 88space. 89.Pp 90Upon receipt of a SIGTSTP, the input buffer will be flushed, so any 91partially typed password must be retyped when the process 92continues. | 86will modify the same object. 87.Pp 88The calling process should zero the password as soon as possible to 89avoid leaving the cleartext password visible in the process's address 90space. 91.Pp 92Upon receipt of a SIGTSTP, the input buffer will be flushed, so any 93partially typed password must be retyped when the process 94continues. |