Messages in this thread Patch in this message | | | Date | Fri, 02 Feb 2007 18:35:40 -0800 | From | Chris Wright <> | Subject | [patch 36/59] knfsd: fix type mismatch with filldir_t used by nfsd. |
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-stable review patch. If anyone has any objections, please let us know. ------------------
From: NeilBrown <neilb@suse.de>
nfsd defines a type 'encode_dent_fn' which is much like 'filldir_t' except that the first pointer is 'struct readdir_cd *' rather than 'void *'. It then casts encode_dent_fn points to 'filldir_t' as needed. This hides any other type mismatches between the two such as the fact that the 'ino' arg recently changed from ino_t to u64.
So: get rid of 'encode_dent_fn', get rid of the cast of the function type, change the first arg of various functions from 'struct readdir_cd *' to 'void *', and live with the fact that we have a little less type checking on the calling of these functions now. Less internal (to nfsd) checking offset by more external checking, which is more important.
Thanks to Gabriel Paubert <paubert@iram.es> for discovering this and providing an initial patch.
Signed-off-by: Gabriel Paubert <paubert@iram.es> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> --- fs/nfsd/nfs3xdr.c | 9 +++++---- fs/nfsd/nfs4xdr.c | 5 +++-- fs/nfsd/nfsxdr.c | 5 +++-- fs/nfsd/vfs.c | 4 ++-- include/linux/nfsd/nfsd.h | 4 +--- include/linux/nfsd/xdr.h | 4 ++-- include/linux/nfsd/xdr3.h | 8 ++++---- 7 files changed, 20 insertions(+), 19 deletions(-)
--- linux-2.6.19.2.orig/fs/nfsd/nfs3xdr.c +++ linux-2.6.19.2/fs/nfsd/nfs3xdr.c @@ -994,15 +994,16 @@ encode_entry(struct readdir_cd *ccd, con } int -nfs3svc_encode_entry(struct readdir_cd *cd, const char *name, - int namlen, loff_t offset, ino_t ino, unsigned int d_type) +nfs3svc_encode_entry(void *cd, const char *name, + int namlen, loff_t offset, u64 ino, unsigned int d_type) { return encode_entry(cd, name, namlen, offset, ino, d_type, 0); } int -nfs3svc_encode_entry_plus(struct readdir_cd *cd, const char *name, - int namlen, loff_t offset, ino_t ino, unsigned int d_type) +nfs3svc_encode_entry_plus(void *cd, const char *name, + int namlen, loff_t offset, u64 ino, + unsigned int d_type) { return encode_entry(cd, name, namlen, offset, ino, d_type, 1); } --- linux-2.6.19.2.orig/fs/nfsd/nfs4xdr.c +++ linux-2.6.19.2/fs/nfsd/nfs4xdr.c @@ -1884,9 +1884,10 @@ nfsd4_encode_rdattr_error(__be32 *p, int } static int -nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen, - loff_t offset, ino_t ino, unsigned int d_type) +nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, + loff_t offset, u64 ino, unsigned int d_type) { + struct readdir_cd *ccd = ccdv; struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); int buflen; __be32 *p = cd->buffer; --- linux-2.6.19.2.orig/fs/nfsd/nfsxdr.c +++ linux-2.6.19.2/fs/nfsd/nfsxdr.c @@ -467,9 +467,10 @@ nfssvc_encode_statfsres(struct svc_rqst } int -nfssvc_encode_entry(struct readdir_cd *ccd, const char *name, - int namlen, loff_t offset, ino_t ino, unsigned int d_type) +nfssvc_encode_entry(void *ccdv, const char *name, + int namlen, loff_t offset, u64 ino, unsigned int d_type) { + struct readdir_cd *ccd = ccdv; struct nfsd_readdirres *cd = container_of(ccd, struct nfsd_readdirres, common); __be32 *p = cd->buffer; int buflen, slen; --- linux-2.6.19.2.orig/fs/nfsd/vfs.c +++ linux-2.6.19.2/fs/nfsd/vfs.c @@ -1727,7 +1727,7 @@ out: */ __be32 nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp, - struct readdir_cd *cdp, encode_dent_fn func) + struct readdir_cd *cdp, filldir_t func) { __be32 err; int host_err; @@ -1752,7 +1752,7 @@ nfsd_readdir(struct svc_rqst *rqstp, str do { cdp->err = nfserr_eof; /* will be cleared on successful read */ - host_err = vfs_readdir(file, (filldir_t) func, cdp); + host_err = vfs_readdir(file, func, cdp); } while (host_err >=0 && cdp->err == nfs_ok); if (host_err) err = nfserrno(host_err); --- linux-2.6.19.2.orig/include/linux/nfsd/nfsd.h +++ linux-2.6.19.2/include/linux/nfsd/nfsd.h @@ -52,8 +52,6 @@ struct readdir_cd { __be32 err; /* 0, nfserr, or nfserr_eof */ }; -typedef int (*encode_dent_fn)(struct readdir_cd *, const char *, - int, loff_t, ino_t, unsigned int); typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int); extern struct svc_program nfsd_program; @@ -117,7 +115,7 @@ __be32 nfsd_unlink(struct svc_rqst *, s int nfsd_truncate(struct svc_rqst *, struct svc_fh *, unsigned long size); __be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, - loff_t *, struct readdir_cd *, encode_dent_fn); + loff_t *, struct readdir_cd *, filldir_t); __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, struct kstatfs *); --- linux-2.6.19.2.orig/include/linux/nfsd/xdr3.h +++ linux-2.6.19.2/include/linux/nfsd/xdr3.h @@ -331,11 +331,11 @@ int nfs3svc_release_fhandle(struct svc_r struct nfsd3_attrstat *); int nfs3svc_release_fhandle2(struct svc_rqst *, __be32 *, struct nfsd3_fhandle_pair *); -int nfs3svc_encode_entry(struct readdir_cd *, const char *name, - int namlen, loff_t offset, ino_t ino, +int nfs3svc_encode_entry(void *, const char *name, + int namlen, loff_t offset, u64 ino, unsigned int); -int nfs3svc_encode_entry_plus(struct readdir_cd *, const char *name, - int namlen, loff_t offset, ino_t ino, +int nfs3svc_encode_entry_plus(void *, const char *name, + int namlen, loff_t offset, u64 ino, unsigned int); /* Helper functions for NFSv3 ACL code */ __be32 *nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, --- linux-2.6.19.2.orig/include/linux/nfsd/xdr.h +++ linux-2.6.19.2/include/linux/nfsd/xdr.h @@ -165,8 +165,8 @@ int nfssvc_encode_readres(struct svc_rqs int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *, struct nfsd_statfsres *); int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *, struct nfsd_readdirres *); -int nfssvc_encode_entry(struct readdir_cd *, const char *name, - int namlen, loff_t offset, ino_t ino, unsigned int); +int nfssvc_encode_entry(void *, const char *name, + int namlen, loff_t offset, u64 ino, unsigned int); int nfssvc_release_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *); -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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