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NFSv4: handle lack of clientaddr in option string

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If a NFSv4 mount is attempted  with string based options, and the
option string doesn't contain a clientaddr= option, the kernel will
currently oops. Check for this situation and return a proper error.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Jeff Layton 2007-07-18 11:28:43 -04:00 • committed by Trond Myklebust
parent f9d888fcd9
commit 0a87cf128f
1 changed files with 7 additions and 0 deletions
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7
fs/nfs/super.c
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@ -1685,6 +1685,9 @@ static int nfs4_validate_mount_data(struct nfs4_mount_data **options,
dprintk("MNTPATH: %s\n", *mntpath); dprintk("MNTPATH: %s\n", *mntpath);
if (args.client_address == NULL)
goto out_no_client_address;
*ip_addr = args.client_address; *ip_addr = args.client_address;
break; break;
@ -1705,6 +1708,10 @@ out_inval_auth:
out_no_address: out_no_address:
dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n"); dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n");
return -EINVAL; return -EINVAL;
out_no_client_address:
dfprintk(MOUNT, "NFS4: mount program didn't pass callback address\n");
return -EINVAL;
} }
/* /*