5.10-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit f8a38e2d6c885f9d7cd03febc515d36293de4a5b ]
This commit removes the last usage of the original decode_sattr3(), so it is removed as a clean-up.
Signed-off-by: Chuck Lever chuck.lever@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfsd/nfs3xdr.c | 107 +++++++++++++++------------------------------- 1 file changed, 35 insertions(+), 72 deletions(-)
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index eb17231ab1661..a30b418a51160 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -103,26 +103,6 @@ encode_fh(__be32 *p, struct svc_fh *fhp) return p + XDR_QUADLEN(size); }
-/* - * Decode a file name and make sure that the path contains - * no slashes or null bytes. - */ -static __be32 * -decode_filename(__be32 *p, char **namp, unsigned int *lenp) -{ - char *name; - unsigned int i; - - if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) { - for (i = 0, name = *namp; i < *lenp; i++, name++) { - if (*name == '\0' || *name == '/') - return NULL; - } - } - - return p; -} - static bool svcxdr_decode_filename3(struct xdr_stream *xdr, char **name, unsigned int *len) { @@ -262,49 +242,26 @@ svcxdr_decode_sattrguard3(struct xdr_stream *xdr, struct nfsd3_sattrargs *args) return true; }
-static __be32 * -decode_sattr3(__be32 *p, struct iattr *iap, struct user_namespace *userns) +static bool +svcxdr_decode_specdata3(struct xdr_stream *xdr, struct nfsd3_mknodargs *args) { - u32 tmp; + __be32 *p;
- iap->ia_valid = 0; + p = xdr_inline_decode(xdr, XDR_UNIT * 2); + if (!p) + return false; + args->major = be32_to_cpup(p++); + args->minor = be32_to_cpup(p);
- if (*p++) { - iap->ia_valid |= ATTR_MODE; - iap->ia_mode = ntohl(*p++); - } - if (*p++) { - iap->ia_uid = make_kuid(userns, ntohl(*p++)); - if (uid_valid(iap->ia_uid)) - iap->ia_valid |= ATTR_UID; - } - if (*p++) { - iap->ia_gid = make_kgid(userns, ntohl(*p++)); - if (gid_valid(iap->ia_gid)) - iap->ia_valid |= ATTR_GID; - } - if (*p++) { - u64 newsize; + return true; +}
- iap->ia_valid |= ATTR_SIZE; - p = xdr_decode_hyper(p, &newsize); - iap->ia_size = min_t(u64, newsize, NFS_OFFSET_MAX); - } - if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ - iap->ia_valid |= ATTR_ATIME; - } else if (tmp == 2) { /* set to client time */ - iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; - iap->ia_atime.tv_sec = ntohl(*p++); - iap->ia_atime.tv_nsec = ntohl(*p++); - } - if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ - iap->ia_valid |= ATTR_MTIME; - } else if (tmp == 2) { /* set to client time */ - iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; - iap->ia_mtime.tv_sec = ntohl(*p++); - iap->ia_mtime.tv_nsec = ntohl(*p++); - } - return p; +static bool +svcxdr_decode_devicedata3(struct svc_rqst *rqstp, struct xdr_stream *xdr, + struct nfsd3_mknodargs *args) +{ + return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs) && + svcxdr_decode_specdata3(xdr, args); }
static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp) @@ -644,24 +601,30 @@ nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p) int nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p) { + struct xdr_stream *xdr = &rqstp->rq_arg_stream; struct nfsd3_mknodargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->fh)) - || !(p = decode_filename(p, &args->name, &args->len))) + if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len)) + return 0; + if (xdr_stream_decode_u32(xdr, &args->ftype) < 0) + return 0; + switch (args->ftype) { + case NF3CHR: + case NF3BLK: + return svcxdr_decode_devicedata3(rqstp, xdr, args); + case NF3SOCK: + case NF3FIFO: + return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs); + case NF3REG: + case NF3DIR: + case NF3LNK: + /* Valid XDR but illegal file types */ + break; + default: return 0; - - args->ftype = ntohl(*p++); - - if (args->ftype == NF3BLK || args->ftype == NF3CHR - || args->ftype == NF3SOCK || args->ftype == NF3FIFO) - p = decode_sattr3(p, &args->attrs, nfsd_user_namespace(rqstp)); - - if (args->ftype == NF3BLK || args->ftype == NF3CHR) { - args->major = ntohl(*p++); - args->minor = ntohl(*p++); }
- return xdr_argsize_check(rqstp, p); + return 1; }
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