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Prompt for and read a password
#include <unistd.h>
char *getpass( const char *prompt );
- prompt
- The string you want to display to prompt for the password.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
|
This function is in libc.a, but not in libc.so
(in order to save space). |
The getpass() function can be used to get a password.
It opens the current terminal, displays the
given prompt, suppresses echoing, reads up to 32 characters
into a static buffer, and restores echoing.
This function adds a null character to the end of the string, but
ignores additional characters and the newline character.
A pointer to the static buffer.
Legacy Unix
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
This function leaves its result in an internal static buffer and
returns a pointer to it. Subsequent calls to getpass() modify
the same buffer.
The calling process should zero the password as soon as possible to avoid
leaving the clear-text password visible in the process's address space.
crypt()
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