#include <linux/nfs.h>
#include <linux/nfs3.h>
#include <linux/nfs_fs.h>
+#include <linux/nfsacl.h>
+#include <linux/vserver/xid.h>
+#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_XDR
/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO EIO
-extern int nfs_stat_to_errno(int);
-
/*
* Declare the space requirements for NFS arguments and replies as
* number of 32bit-words
#define NFS3_wccstat_sz (1+NFS3_wcc_data_sz)
#define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz))
#define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1)
-#define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz)
+#define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1)
#define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3)
#define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4)
#define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz)
#define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6)
#define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2)
+#define ACL3_getaclargs_sz (NFS3_fh_sz+1)
+#define ACL3_setaclargs_sz (NFS3_fh_sz+1+2*(2+5*3))
+#define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+2*(2+5*3))
+#define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz)
+
/*
* Map file type to S_IFMT bits
*/
static inline u32 *
xdr_decode_fhandle(u32 *p, struct nfs_fh *fh)
{
- /*
- * Zero all nonused bytes
- */
- memset((u8 *)fh, 0, sizeof(*fh));
if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) {
memcpy(fh->data, p, fh->size);
return p + XDR_QUADLEN(fh->size);
if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor)
fattr->rdev = 0;
- p = xdr_decode_hyper(p, &fattr->fsid_u.nfs3);
+ p = xdr_decode_hyper(p, &fattr->fsid.major);
+ fattr->fsid.minor = 0;
p = xdr_decode_hyper(p, &fattr->fileid);
p = xdr_decode_time3(p, &fattr->atime);
p = xdr_decode_time3(p, &fattr->mtime);
/* Update the mode bits */
fattr->valid |= (NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3);
- fattr->timestamp = jiffies;
return p;
}
static inline u32 *
-xdr_encode_sattr(u32 *p, struct iattr *attr)
+xdr_encode_sattr(u32 *p, struct iattr *attr, int tagxid)
{
if (attr->ia_valid & ATTR_MODE) {
*p++ = xdr_one;
- *p++ = htonl(attr->ia_mode);
+ *p++ = htonl(attr->ia_mode & S_IALLUGO);
} else {
*p++ = xdr_zero;
}
- if (attr->ia_valid & ATTR_UID) {
+ if (attr->ia_valid & ATTR_UID ||
+ (tagxid && (attr->ia_valid & ATTR_XID))) {
*p++ = xdr_one;
- *p++ = htonl(attr->ia_uid);
+ *p++ = htonl(XIDINO_UID(tagxid, attr->ia_uid, attr->ia_xid));
} else {
*p++ = xdr_zero;
}
- if (attr->ia_valid & ATTR_GID) {
+ if (attr->ia_valid & ATTR_GID ||
+ (tagxid && (attr->ia_valid & ATTR_XID))) {
*p++ = xdr_one;
- *p++ = htonl(attr->ia_gid);
+ *p++ = htonl(XIDINO_GID(tagxid, attr->ia_gid, attr->ia_xid));
} else {
*p++ = xdr_zero;
}
nfs3_xdr_sattrargs(struct rpc_rqst *req, u32 *p, struct nfs3_sattrargs *args)
{
p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_sattr(p, args->sattr);
+ p = xdr_encode_sattr(p, args->sattr,
+ req->rq_task->tk_client->cl_tagxid);
*p++ = htonl(args->guard);
if (args->guard)
p = xdr_encode_time3(p, &args->guardtime);
*p++ = args->verifier[0];
*p++ = args->verifier[1];
} else
- p = xdr_encode_sattr(p, args->sattr);
+ p = xdr_encode_sattr(p, args->sattr,
+ req->rq_task->tk_client->cl_tagxid);
req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
return 0;
{
p = xdr_encode_fhandle(p, args->fh);
p = xdr_encode_array(p, args->name, args->len);
- p = xdr_encode_sattr(p, args->sattr);
+ p = xdr_encode_sattr(p, args->sattr,
+ req->rq_task->tk_client->cl_tagxid);
req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
return 0;
}
{
p = xdr_encode_fhandle(p, args->fromfh);
p = xdr_encode_array(p, args->fromname, args->fromlen);
- p = xdr_encode_sattr(p, args->sattr);
+ p = xdr_encode_sattr(p, args->sattr,
+ req->rq_task->tk_client->cl_tagxid);
p = xdr_encode_array(p, args->topath, args->tolen);
req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
return 0;
p = xdr_encode_fhandle(p, args->fh);
p = xdr_encode_array(p, args->name, args->len);
*p++ = htonl(args->type);
- p = xdr_encode_sattr(p, args->sattr);
+ p = xdr_encode_sattr(p, args->sattr,
+ req->rq_task->tk_client->cl_tagxid);
if (args->type == NF3CHR || args->type == NF3BLK) {
*p++ = htonl(MAJOR(args->rdev));
*p++ = htonl(MINOR(args->rdev));
nfs3_xdr_readdirres(struct rpc_rqst *req, u32 *p, struct nfs3_readdirres *res)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct iovec *iov = rcvbuf->head;
+ struct kvec *iov = rcvbuf->head;
struct page **page;
int hdrlen, recvd;
int status, nr;
return 0;
}
+#ifdef CONFIG_NFS_V3_ACL
+/*
+ * Encode GETACL arguments
+ */
+static int
+nfs3_xdr_getaclargs(struct rpc_rqst *req, u32 *p,
+ struct nfs3_getaclargs *args)
+{
+ struct rpc_auth *auth = req->rq_task->tk_auth;
+ unsigned int replen;
+
+ p = xdr_encode_fhandle(p, args->fh);
+ *p++ = htonl(args->mask);
+ req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+
+ if (args->mask & (NFS_ACL | NFS_DFACL)) {
+ /* Inline the page array */
+ replen = (RPC_REPHDRSIZE + auth->au_rslack +
+ ACL3_getaclres_sz) << 2;
+ xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0,
+ NFSACL_MAXPAGES << PAGE_SHIFT);
+ }
+ return 0;
+}
+
+/*
+ * Encode SETACL arguments
+ */
+static int
+nfs3_xdr_setaclargs(struct rpc_rqst *req, u32 *p,
+ struct nfs3_setaclargs *args)
+{
+ struct xdr_buf *buf = &req->rq_snd_buf;
+ unsigned int base, len_in_head, len = nfsacl_size(
+ (args->mask & NFS_ACL) ? args->acl_access : NULL,
+ (args->mask & NFS_DFACL) ? args->acl_default : NULL);
+ int count, err;
+
+ p = xdr_encode_fhandle(p, NFS_FH(args->inode));
+ *p++ = htonl(args->mask);
+ base = (char *)p - (char *)buf->head->iov_base;
+ /* put as much of the acls into head as possible. */
+ len_in_head = min_t(unsigned int, buf->head->iov_len - base, len);
+ len -= len_in_head;
+ req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2));
+
+ for (count = 0; (count << PAGE_SHIFT) < len; count++) {
+ args->pages[count] = alloc_page(GFP_KERNEL);
+ if (!args->pages[count]) {
+ while (count)
+ __free_page(args->pages[--count]);
+ return -ENOMEM;
+ }
+ }
+ xdr_encode_pages(buf, args->pages, 0, len);
+
+ err = nfsacl_encode(buf, base, args->inode,
+ (args->mask & NFS_ACL) ?
+ args->acl_access : NULL, 1, 0);
+ if (err > 0)
+ err = nfsacl_encode(buf, base + err, args->inode,
+ (args->mask & NFS_DFACL) ?
+ args->acl_default : NULL, 1,
+ NFS_ACL_DEFAULT);
+ return (err > 0) ? 0 : err;
+}
+#endif /* CONFIG_NFS_V3_ACL */
+
/*
* NFS XDR decode functions
*/
{
struct rpc_auth *auth = req->rq_task->tk_auth;
unsigned int replen;
- u32 count = args->count - 4;
p = xdr_encode_fhandle(p, args->fh);
req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
/* Inline the page array */
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
+ xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
return 0;
}
nfs3_xdr_readlinkres(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct iovec *iov = rcvbuf->head;
- unsigned int hdrlen;
- u32 *strlen, len;
- char *string;
+ struct kvec *iov = rcvbuf->head;
+ int hdrlen, len, recvd;
+ char *kaddr;
int status;
status = ntohl(*p++);
if (status != 0)
return -nfs_stat_to_errno(status);
+ /* Convert length of symlink */
+ len = ntohl(*p++);
+ if (len >= rcvbuf->page_len || len <= 0) {
+ dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
+ return -ENAMETOOLONG;
+ }
+
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len > hdrlen) {
+ if (iov->iov_len < hdrlen) {
+ printk(KERN_WARNING "NFS: READLINK reply header overflowed:"
+ "length %d > %Zu\n", hdrlen, iov->iov_len);
+ return -errno_NFSERR_IO;
+ } else if (iov->iov_len != hdrlen) {
dprintk("NFS: READLINK header is short. iovec will be shifted.\n");
xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
}
+ recvd = req->rq_rcv_buf.len - hdrlen;
+ if (recvd < len) {
+ printk(KERN_WARNING "NFS: server cheating in readlink reply: "
+ "count %u > recvd %u\n", len, recvd);
+ return -EIO;
+ }
- strlen = (u32*)kmap_atomic(rcvbuf->pages[0], KM_USER0);
- /* Convert length of symlink */
- len = ntohl(*strlen);
- if (len > rcvbuf->page_len)
- len = rcvbuf->page_len;
- *strlen = len;
/* NULL terminate the string we got */
- string = (char *)(strlen + 1);
- string[len] = 0;
- kunmap_atomic(strlen, KM_USER0);
+ kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0);
+ kaddr[len+rcvbuf->page_base] = '\0';
+ kunmap_atomic(kaddr, KM_USER0);
return 0;
}
static int
nfs3_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res)
{
- struct iovec *iov = req->rq_rcv_buf.head;
+ struct kvec *iov = req->rq_rcv_buf.head;
int status, count, ocount, recvd, hdrlen;
status = ntohl(*p++);
return 0;
}
+#ifdef CONFIG_NFS_V3_ACL
+/*
+ * Decode GETACL reply
+ */
+static int
+nfs3_xdr_getaclres(struct rpc_rqst *req, u32 *p,
+ struct nfs3_getaclres *res)
+{
+ struct xdr_buf *buf = &req->rq_rcv_buf;
+ int status = ntohl(*p++);
+ struct posix_acl **acl;
+ unsigned int *aclcnt;
+ int err, base;
+
+ if (status != 0)
+ return -nfs_stat_to_errno(status);
+ p = xdr_decode_post_op_attr(p, res->fattr);
+ res->mask = ntohl(*p++);
+ if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
+ return -EINVAL;
+ base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base;
+
+ acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL;
+ aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL;
+ err = nfsacl_decode(buf, base, aclcnt, acl);
+
+ acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL;
+ aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL;
+ if (err > 0)
+ err = nfsacl_decode(buf, base + err, aclcnt, acl);
+ return (err > 0) ? 0 : err;
+}
+
+/*
+ * Decode setacl reply.
+ */
+static int
+nfs3_xdr_setaclres(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr)
+{
+ int status = ntohl(*p++);
+
+ if (status)
+ return -nfs_stat_to_errno(status);
+ xdr_decode_post_op_attr(p, fattr);
+ return 0;
+}
+#endif /* CONFIG_NFS_V3_ACL */
+
#ifndef MAX
# define MAX(a, b) (((a) > (b))? (a) : (b))
#endif
.p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \
.p_decode = (kxdrproc_t) nfs3_xdr_##restype, \
.p_bufsiz = MAX(NFS3_##argtype##_sz,NFS3_##restype##_sz) << 2, \
- .p_timer = timer \
+ .p_timer = timer, \
+ .p_statidx = NFS3PROC_##proc, \
+ .p_name = #proc, \
}
struct rpc_procinfo nfs3_procedures[] = {
struct rpc_version nfs_version3 = {
.number = 3,
- .nrprocs = sizeof(nfs3_procedures)/sizeof(nfs3_procedures[0]),
+ .nrprocs = ARRAY_SIZE(nfs3_procedures),
.procs = nfs3_procedures
};
+#ifdef CONFIG_NFS_V3_ACL
+static struct rpc_procinfo nfs3_acl_procedures[] = {
+ [ACLPROC3_GETACL] = {
+ .p_proc = ACLPROC3_GETACL,
+ .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs,
+ .p_decode = (kxdrproc_t) nfs3_xdr_getaclres,
+ .p_bufsiz = MAX(ACL3_getaclargs_sz, ACL3_getaclres_sz) << 2,
+ .p_timer = 1,
+ .p_name = "GETACL",
+ },
+ [ACLPROC3_SETACL] = {
+ .p_proc = ACLPROC3_SETACL,
+ .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs,
+ .p_decode = (kxdrproc_t) nfs3_xdr_setaclres,
+ .p_bufsiz = MAX(ACL3_setaclargs_sz, ACL3_setaclres_sz) << 2,
+ .p_timer = 0,
+ .p_name = "SETACL",
+ },
+};
+
+struct rpc_version nfsacl_version3 = {
+ .number = 3,
+ .nrprocs = sizeof(nfs3_acl_procedures)/
+ sizeof(nfs3_acl_procedures[0]),
+ .procs = nfs3_acl_procedures,
+};
+#endif /* CONFIG_NFS_V3_ACL */
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