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-rw-r--r--fs/nfsd/nfsctl.c16
-rw-r--r--fs/nfsd/nfssvc.c14
2 files changed, 22 insertions, 8 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index d54fb0e3f30e..4bbba88416dc 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -561,6 +561,7 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
len = qword_get(&mesg, vers, size);
if (len <= 0) return -EINVAL;
do {
+ enum vers_op cmd;
sign = *vers;
if (sign == '+' || sign == '-')
num = simple_strtol((vers+1), &minorp, 0);
@@ -571,21 +572,20 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
return -EINVAL;
if (kstrtouint(minorp+1, 0, &minor) < 0)
return -EINVAL;
- if (nfsd_minorversion(minor, sign == '-' ?
- NFSD_CLEAR : NFSD_SET) < 0)
- return -EINVAL;
- goto next;
- }
+ } else
+ minor = 0;
+ cmd = sign == '-' ? NFSD_CLEAR : NFSD_SET;
switch(num) {
case 2:
case 3:
- case 4:
- nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
+ nfsd_vers(num, cmd);
break;
+ case 4:
+ if (nfsd_minorversion(minor, cmd) >= 0)
+ break;
default:
return -EINVAL;
}
- next:
vers += len + 1;
} while ((len = qword_get(&mesg, vers, size)) > 0);
/* If all get turned off, turn them back on, as
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 2e378d0479ad..efd66da99201 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -153,6 +153,18 @@ int nfsd_vers(int vers, enum vers_op change)
return 0;
}
+static void
+nfsd_adjust_nfsd_versions4(void)
+{
+ unsigned i;
+
+ for (i = 0; i <= NFSD_SUPPORTED_MINOR_VERSION; i++) {
+ if (nfsd_supported_minorversions[i])
+ return;
+ }
+ nfsd_vers(4, NFSD_CLEAR);
+}
+
int nfsd_minorversion(u32 minorversion, enum vers_op change)
{
if (minorversion > NFSD_SUPPORTED_MINOR_VERSION)
@@ -160,9 +172,11 @@ int nfsd_minorversion(u32 minorversion, enum vers_op change)
switch(change) {
case NFSD_SET:
nfsd_supported_minorversions[minorversion] = true;
+ nfsd_vers(4, NFSD_SET);
break;
case NFSD_CLEAR:
nfsd_supported_minorversions[minorversion] = false;
+ nfsd_adjust_nfsd_versions4();
break;
case NFSD_TEST:
return nfsd_supported_minorversions[minorversion];