[PATCH] knfsd: nfsd4 reboot dirname fix
Set the recovery directory via /proc/fs/nfsd/nfs4recoverydir.
It may be changed any time, but is used only on startup.
Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 6cca358..89e3652 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -48,6 +48,7 @@
#include <linux/nfs4.h>
#include <linux/nfsd/state.h>
#include <linux/nfsd/xdr4.h>
+#include <linux/namei.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
@@ -71,7 +72,8 @@
static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
static void release_stateid_lockowners(struct nfs4_stateid *open_stp);
-extern char recovery_dirname[];
+static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
+static void nfs4_set_recdir(char *recdir);
/* Locking:
*
@@ -3224,8 +3226,10 @@
{
int status;
- nfsd4_init_recdir(recovery_dirname);
+ nfs4_lock_state();
+ nfsd4_init_recdir(user_recovery_dirname);
status = nfsd4_recdir_load();
+ nfs4_unlock_state();
if (status)
printk("NFSD: Failure reading reboot recovery data\n");
}
@@ -3329,6 +3333,35 @@
nfs4_unlock_state();
}
+static void
+nfs4_set_recdir(char *recdir)
+{
+ nfs4_lock_state();
+ strcpy(user_recovery_dirname, recdir);
+ nfs4_unlock_state();
+}
+
+/*
+ * Change the NFSv4 recovery directory to recdir.
+ */
+int
+nfs4_reset_recoverydir(char *recdir)
+{
+ int status;
+ struct nameidata nd;
+
+ status = path_lookup(recdir, LOOKUP_FOLLOW, &nd);
+ if (status)
+ return status;
+ status = -ENOTDIR;
+ if (S_ISDIR(nd.dentry->d_inode->i_mode)) {
+ nfs4_set_recdir(recdir);
+ status = 0;
+ }
+ path_release(&nd);
+ return status;
+}
+
/*
* Called when leasetime is changed.
*