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alpha: kernel: using memcpy() instead of strcpy() 

When sending message in send_secondary_console_msg(), the length is not
include the NUL byte, and also not copy NUL to 'ipc_buffer'.

When receive message in recv_secondary_console_msg(), the 'cnt' also
excludes NUL.

So when get string from ipc_buffer, it may not be NUL terminated.

Then use memcpy() instead of strcpy(), and set last byte NUL.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Chen Gang <gang.chen@asianux.com>
This commit is contained in:
Chen Gang 2013-05-29 18:51:28 +08:00 committed by Matt Turner
parent 29b7a47a9d
commit 00ee03092a
1 changed files with 2 additions and 1 deletions
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3
arch/alpha/kernel/smp.c
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@ -266,7 +266,8 @@ recv_secondary_console_msg(void)
else {
cp1 = (char *) &cpu->ipc_buffer[11];
cp2 = buf;
strcpy(cp2, cp1);
memcpy(cp2, cp1, cnt);
cp2[cnt] = '\0';
while ((cp2 = strchr(cp2, '\r')) != 0) {
*cp2 = ' ';