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[PATCH] knfsd: nfsd4 reboot dirname fix

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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>
This commit is contained in:
NeilBrown
2005-06-23 22:04:32 -07:00
committed by Linus Torvalds
parent c7b9a45927
commit 0964a3d3f1
4 changed files with 60 additions and 3 deletions
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23
fs/nfsd/nfsctl.c
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@@ -51,6 +51,7 @@ enum {
NFSD_Fh,
NFSD_Threads,
NFSD_Leasetime,
NFSD_RecoveryDir,
};
/*
@@ -66,6 +67,7 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size);
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 *, char *, size_t) = {
[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 file *file, char *buf, size_t size)
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_block * sb, void * data, int silent)
[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 */ {""}
};