From: Miklos Szeredi <mszeredi@xxxxxxx>
Multiple mnt_want_write() calls in the switch statement looks really
ugly.
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxx>
---
fs/nfsd/vfs.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
Index: vfs-2.6/fs/nfsd/vfs.c
===================================================================
--- vfs-2.6.orig/fs/nfsd/vfs.c 2008-04-23 18:14:14.000000000 +0200
+++ vfs-2.6/fs/nfsd/vfs.c 2008-04-23 18:50:29.000000000 +0200
@@ -1249,36 +1249,33 @@ nfsd_create(struct svc_rqst *rqstp, stru
iap->ia_mode = 0;
iap->ia_mode = (iap->ia_mode & S_IALLUGO) | type;
+ err = nfserr_inval;
+ if (!S_ISREG(type) && !S_ISDIR(type) && !special_file(type)) {
+ printk("nfsd: bad file type %o in nfsd_create\n", type);
+ goto out;
+ }
+
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
+
/*
* Get the dir op function pointer.
*/
err = 0;
switch (type) {
case S_IFREG:
- host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
- if (host_err)
- goto out_nfserr;
host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
break;
case S_IFDIR:
- host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
- if (host_err)
- goto out_nfserr;
host_err = vfs_mkdir(dirp, dchild, iap->ia_mode);
break;
case S_IFCHR:
case S_IFBLK:
case S_IFIFO:
case S_IFSOCK:
- host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
- if (host_err)
- goto out_nfserr;
host_err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev);
break;
- default:
- printk("nfsd: bad file type %o in nfsd_create\n", type);
- host_err = -EINVAL;
- goto out_nfserr;
}
if (host_err < 0) {
mnt_drop_write(fhp->fh_export->ex_path.mnt);
@@ -1290,7 +1287,6 @@ nfsd_create(struct svc_rqst *rqstp, stru
write_inode_now(dchild->d_inode, 1);
}
-
err2 = nfsd_create_setattr(rqstp, resfhp, iap);
if (err2)
err = err2;
--
--
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