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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-10-25 21:43:01 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-12-15 14:07:24 -0500 |
| commit | 3227fa41abc191384fa81b3bcf52aa7fccb31536 (patch) | |
| tree | f50512f2feecfc2fde13b0843cbbfb87728e2442 /fs/nfsd | |
| parent | 82ead7fe41da960ed80652d13d5a1072f85f5aca (diff) | |
| download | linux-3227fa41abc191384fa81b3bcf52aa7fccb31536.tar.gz linux-3227fa41abc191384fa81b3bcf52aa7fccb31536.tar.bz2 linux-3227fa41abc191384fa81b3bcf52aa7fccb31536.zip | |
nfsd: filter readdir results in V4ROOT case
As with lookup, we treat every boject as a mountpoint and pretend it
doesn't exist if it isn't exported.
The preexisting code here is confusing, but I haven't yet figured out
how to make it clearer.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 10 | ||||
| -rw-r--r-- | fs/nfsd/vfs.c | 2 | ||||
| -rw-r--r-- | fs/nfsd/vfs.h | 1 |
3 files changed, 9 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index cab978031100..a8587e90fd5a 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2196,11 +2196,14 @@ nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, * we will not follow the cross mount and will fill the attribtutes * directly from the mountpoint dentry. */ - if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval)) - ignore_crossmnt = 1; - else if (d_mountpoint(dentry)) { + if (nfsd_mountpoint(dentry, exp)) { int err; + if (!(exp->ex_flags & NFSEXP_V4ROOT) + && !attributes_need_mount(cd->rd_bmval)) { + ignore_crossmnt = 1; + goto out_encode; + } /* * Why the heck aren't we just using nfsd_lookup?? * Different "."/".." handling? Something else? @@ -2216,6 +2219,7 @@ nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, goto out_put; } +out_encode: nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, cd->rd_rqstp, ignore_crossmnt); out_put: diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index eaf2f0dca12a..a0015a958aef 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -170,7 +170,7 @@ static int nfsd_lookup_parent(struct svc_rqst *rqstp, struct dentry *dparent, st * For nfsd purposes, we treat V4ROOT exports as though there was an * export at *every* directory. */ -static int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp) +int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp) { if (d_mountpoint(dentry)) return 1; diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h index b8011fd2fcab..f4fa6d351bbd 100644 --- a/fs/nfsd/vfs.h +++ b/fs/nfsd/vfs.h @@ -40,6 +40,7 @@ __be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *, struct svc_export **, struct dentry **); __be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *, struct iattr *, int, time_t); +int nfsd_mountpoint(struct dentry *, struct svc_export *); #ifdef CONFIG_NFSD_V4 __be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *, struct nfs4_acl *); |