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author | rwatson <rwatson@FreeBSD.org> | 2008-07-05 13:10:10 +0000 |
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committer | rwatson <rwatson@FreeBSD.org> | 2008-07-05 13:10:10 +0000 |
commit | 051819b84758e212ecd632e9bd6f47e70f37aa3a (patch) | |
tree | fcde383ade7af0060da3dd095039791d9e423bee /sys/dev/syscons/daemon | |
parent | b754e07b66100e4e4d6ac8caa8f6302730552936 (diff) | |
download | FreeBSD-src-051819b84758e212ecd632e9bd6f47e70f37aa3a.zip FreeBSD-src-051819b84758e212ecd632e9bd6f47e70f37aa3a.tar.gz |
Introduce a new lock, hostname_mtx, and use it to synchronize access
to global hostname and domainname variables. Where necessary, copy
to or from a stack-local buffer before performing copyin() or
copyout(). A few uses, such as in cd9660 and daemon_saver, remain
under-synchronized and will require further updates.
Correct a bug in which a failed copyin() of domainname would leave
domainname potentially corrupted.
MFC after: 3 weeks
Diffstat (limited to 'sys/dev/syscons/daemon')
-rw-r--r-- | sys/dev/syscons/daemon/daemon_saver.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/syscons/daemon/daemon_saver.c b/sys/dev/syscons/daemon/daemon_saver.c index b15e04c..2afc4c0 100644 --- a/sys/dev/syscons/daemon/daemon_saver.c +++ b/sys/dev/syscons/daemon/daemon_saver.c @@ -350,6 +350,8 @@ daemon_saver(video_adapter_t *adp, int blank) static int daemon_init(video_adapter_t *adp) { + + /* XXXRW: Locking -- these can change! */ messagelen = strlen(hostname) + 3 + strlen(ostype) + 1 + strlen(osrelease); message = malloc(messagelen + 1, M_DEVBUF, M_WAITOK); |