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[Qemu-devel] [PATCH] Accept password as an argument to 'change vnc passw


From: Chris Webb
Subject: [Qemu-devel] [PATCH] Accept password as an argument to 'change vnc password'
Date: Sun, 23 Nov 2008 11:34:47 +0000
User-agent: Mutt/1.5.18 (2008-05-17)

Accept password as an argument to 'change vnc password' monitor command

This allows easier use of the change vnc password monitor command from
management scripts, without having to implement expect(1)-like behaviour.

Signed-off-by: Chris Webb <address@hidden>
---
 monitor.c     |   13 ++++++++-----
 qemu-doc.texi |    8 ++++----
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/monitor.c b/monitor.c
index 22360fc..8ac73c1 100644
--- a/monitor.c
+++ b/monitor.c
@@ -428,12 +428,15 @@ static void do_change_block(const char *device, const 
char *filename, const char
     qemu_key_check(bs, filename);
 }
 
-static void do_change_vnc(const char *target)
+static void do_change_vnc(const char *target, const char *arg)
 {
     if (strcmp(target, "passwd") == 0 ||
        strcmp(target, "password") == 0) {
        char password[9];
-       monitor_readline("Password: ", 1, password, sizeof(password));
+       if (arg)
+           strncpy(password, arg, sizeof(password));
+       else
+           monitor_readline("Password: ", 1, password, sizeof(password));
        password[sizeof(password)-1] = '\0';
        if (vnc_display_password(NULL, password) < 0)
            term_printf("could not set VNC server password\n");
@@ -443,12 +446,12 @@ static void do_change_vnc(const char *target)
     }
 }
 
-static void do_change(const char *device, const char *target, const char *fmt)
+static void do_change(const char *device, const char *target, const char *arg)
 {
     if (strcmp(device, "vnc") == 0) {
-       do_change_vnc(target);
+       do_change_vnc(target, arg);
     } else {
-       do_change_block(device, target, fmt);
+       do_change_block(device, target, arg);
     }
 }
 
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 1735d92..ca3b181 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1233,11 +1233,11 @@ and @var{options} are described at 
@ref{sec_invocation}. eg
 (qemu) change vnc localhost:1
 @end example
 
address@hidden change vnc password
address@hidden change vnc password address@hidden
 
-Change the password associated with the VNC server. The monitor will prompt for
-the new password to be entered. VNC passwords are only significant upto 8 
letters.
-eg.
+Change the password associated with the VNC server. If the new password is not
+supplied, the monitor will prompt for it to be entered. VNC passwords are only
+significant up to 8 letters. eg
 
 @example
 (qemu) change vnc password




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