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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-12-09 16:45:04 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-12-09 16:45:04 +0100 |
| commit | fd4a0edf2a3d781c6ae07d2810776ce22302ee1c (patch) | |
| tree | 4ccfd06bc5705bc2903667043e4f9fdadb568d1b /fs/nfsd | |
| parent | proc/self: use generic_readlink (diff) | |
| download | linux-fd4a0edf2a3d781c6ae07d2810776ce22302ee1c.tar.xz linux-fd4a0edf2a3d781c6ae07d2810776ce22302ee1c.zip | |
vfs: replace calling i_op->readlink with vfs_readlink()
Also check d_is_symlink() in callers instead of inode->i_op->readlink
because following patches will allow NULL ->readlink for symlinks.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 8 | ||||
| -rw-r--r-- | fs/nfsd/vfs.c | 6 |
2 files changed, 6 insertions, 8 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index c2d2895a1ec1..645e1e3c3110 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3576,10 +3576,10 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd if (!p) return nfserr_resource; /* - * XXX: By default, the ->readlink() VFS op will truncate symlinks - * if they would overflow the buffer. Is this kosher in NFSv4? If - * not, one easy fix is: if ->readlink() precisely fills the buffer, - * assume that truncation occurred, and return NFS4ERR_RESOURCE. + * XXX: By default, vfs_readlink() will truncate symlinks if they + * would overflow the buffer. Is this kosher in NFSv4? If not, one + * easy fix is: if vfs_readlink() precisely fills the buffer, assume + * that truncation occurred, and return NFS4ERR_RESOURCE. */ nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, (char *)p, &maxcount); diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8ca642fe9b21..b854f02c1c36 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1451,7 +1451,6 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp, __be32 nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) { - struct inode *inode; mm_segment_t oldfs; __be32 err; int host_err; @@ -1463,10 +1462,9 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) path.mnt = fhp->fh_export->ex_path.mnt; path.dentry = fhp->fh_dentry; - inode = d_inode(path.dentry); err = nfserr_inval; - if (!inode->i_op->readlink) + if (!d_is_symlink(path.dentry)) goto out; touch_atime(&path); @@ -1475,7 +1473,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) */ oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = inode->i_op->readlink(path.dentry, (char __user *)buf, *lenp); + host_err = vfs_readlink(path.dentry, (char __user *)buf, *lenp); set_fs(oldfs); if (host_err < 0) |