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| author | Pavel Emelyanov <xemul@openvz.org> | 2007-11-28 16:21:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-29 09:24:53 -0800 |
| commit | 32df81cbd5b41d281cc3d7e7ff6a98ac6201e197 (patch) | |
| tree | 61fa5ac58e6b74a571ed2ac605454218bd0c75c6 | |
| parent | 48986f06b6bc6f435debcfad0a748ce35f0a52df (diff) | |
| download | lwn-32df81cbd5b41d281cc3d7e7ff6a98ac6201e197.tar.gz lwn-32df81cbd5b41d281cc3d7e7ff6a98ac6201e197.zip | |
Isolate the UTS namespace's domainname and hostname back
Commit 7d69a1f4a72b18876c99c697692b78339d491568 ("remove CONFIG_UTS_NS
and CONFIG_IPC_NS") by Cedric Le Goater accidentally removed the code
that prevented the uts->hostname and uts->domainname values from being
overwritten from another namespace.
In other words, setting hostname/domainname via sysfs (echo xxx >
/proc/sys/kernel/(host|domain)name) cased the new value to be set in
init UTS namespace only.
Return the isolation back.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Cedric Le Goater <clg@fr.ibm.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/utsname_sysctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c index c76c06466bfd..fe3a56c2256d 100644 --- a/kernel/utsname_sysctl.c +++ b/kernel/utsname_sysctl.c @@ -18,6 +18,10 @@ static void *get_uts(ctl_table *table, int write) { char *which = table->data; + struct uts_namespace *uts_ns; + + uts_ns = current->nsproxy->uts_ns; + which = (which - (char *)&init_uts_ns) + (char *)uts_ns; if (!write) down_read(&uts_sem); |