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 <[email protected]>
Signed-off-by: J. Bruce Fields <[email protected]>
Signed-off-by: Neil Brown <[email protected]>
### Diffstat output
./fs/nfsd/nfs4recover.c | 1 -
./fs/nfsd/nfs4state.c | 37 +++++++++++++++++++++++++++++++++++--
./fs/nfsd/nfsctl.c | 23 +++++++++++++++++++++++
./include/linux/nfsd/nfsd.h | 2 ++
4 files changed, 60 insertions(+), 3 deletions(-)
diff ./fs/nfsd/nfs4recover.c~current~ ./fs/nfsd/nfs4recover.c
--- ./fs/nfsd/nfs4recover.c~current~ 2005-06-01 14:22:11.000000000 +1000
+++ ./fs/nfsd/nfs4recover.c 2005-06-01 14:27:47.000000000 +1000
@@ -50,7 +50,6 @@
#define NFSDDBG_FACILITY NFSDDBG_PROC
/* Globals */
-char recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
static struct nameidata rec_dir;
static int rec_dir_init = 0;
diff ./fs/nfsd/nfs4state.c~current~ ./fs/nfsd/nfs4state.c
--- ./fs/nfsd/nfs4state.c~current~ 2005-06-01 14:27:13.000000000 +1000
+++ ./fs/nfsd/nfs4state.c 2005-06-01 14:27:47.000000000 +1000
@@ -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 stateid_t onestateid;
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 @@ nfsd4_load_reboot_recovery_data(void)
{
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_state_shutdown(void)
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.
*
diff ./fs/nfsd/nfsctl.c~current~ ./fs/nfsd/nfsctl.c
--- ./fs/nfsd/nfsctl.c~current~ 2005-05-31 14:21:01.000000000 +1000
+++ ./fs/nfsd/nfsctl.c 2005-06-01 14:27:47.000000000 +1000
@@ -51,6 +51,7 @@ enum {
NFSD_Fh,
NFSD_Threads,
NFSD_Leasetime,
+ NFSD_RecoveryDir,
};
/*
@@ -66,6 +67,7 @@ static ssize_t write_getfs(struct file *
static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
static ssize_t write_threads(struct file *file, char *buf, size_t size);
static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
+static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_Svc] = write_svc,
@@ -78,6 +80,7 @@ static ssize_t (*write_op[])(struct file
[NFSD_Fh] = write_filehandle,
[NFSD_Threads] = write_threads,
[NFSD_Leasetime] = write_leasetime,
+ [NFSD_RecoveryDir] = write_recoverydir,
};
static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
@@ -349,6 +352,25 @@ static ssize_t write_leasetime(struct fi
return strlen(buf);
}
+static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
+{
+ char *mesg = buf;
+ char *recdir;
+ int len, status;
+
+ if (size > PATH_MAX || buf[size-1] != '\n')
+ return -EINVAL;
+ buf[size-1] = 0;
+
+ recdir = mesg;
+ len = qword_get(&mesg, recdir, size);
+ if (len <= 0)
+ return -EINVAL;
+
+ status = nfs4_reset_recoverydir(recdir);
+ return strlen(buf);
+}
+
/*----------------------------------------------------------------------------*/
/*
* populating the filesystem.
@@ -369,6 +391,7 @@ static int nfsd_fill_super(struct super_
[NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
#ifdef CONFIG_NFSD_V4
[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
+ [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
#endif
/* last one */ {""}
};
diff ./include/linux/nfsd/nfsd.h~current~ ./include/linux/nfsd/nfsd.h
--- ./include/linux/nfsd/nfsd.h~current~ 2005-05-31 14:21:00.000000000 +1000
+++ ./include/linux/nfsd/nfsd.h 2005-06-01 14:27:47.000000000 +1000
@@ -150,12 +150,14 @@ int nfs4_state_start(void);
void nfs4_state_shutdown(void);
time_t nfs4_lease_time(void);
void nfs4_reset_lease(time_t leasetime);
+int nfs4_reset_recoverydir(char *recdir);
#else
static inline void nfs4_state_init(void){};
static inline int nfs4_state_start(void){return 0;}
static inline void nfs4_state_shutdown(void){}
static inline time_t nfs4_lease_time(void){return 0;}
static inline void nfs4_reset_lease(time_t leasetime){}
+static inline int nfs4_reset_recoverydir(char *recdir) {return 0;}
#endif
/*
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