Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
new file mode 100644
index 0000000..948b082
--- /dev/null
+++ b/fs/nfsd/nfsxdr.c
@@ -0,0 +1,511 @@
+/*
+ * linux/fs/nfsd/xdr.c
+ *
+ * XDR support for nfsd
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/types.h>
+#include <linux/time.h>
+#include <linux/nfs.h>
+#include <linux/vfs.h>
+#include <linux/sunrpc/xdr.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/mm.h>
+
+#define NFSDDBG_FACILITY NFSDDBG_XDR
+
+
+#ifdef NFSD_OPTIMIZE_SPACE
+# define inline
+#endif
+
+/*
+ * Mapping of S_IF* types to NFS file types
+ */
+static u32 nfs_ftypes[] = {
+ NFNON, NFCHR, NFCHR, NFBAD,
+ NFDIR, NFBAD, NFBLK, NFBAD,
+ NFREG, NFBAD, NFLNK, NFBAD,
+ NFSOCK, NFBAD, NFLNK, NFBAD,
+};
+
+
+/*
+ * XDR functions for basic NFS types
+ */
+static inline u32 *
+decode_fh(u32 *p, struct svc_fh *fhp)
+{
+ fh_init(fhp, NFS_FHSIZE);
+ memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE);
+ fhp->fh_handle.fh_size = NFS_FHSIZE;
+
+ /* FIXME: Look up export pointer here and verify
+ * Sun Secure RPC if requested */
+ return p + (NFS_FHSIZE >> 2);
+}
+
+static inline u32 *
+encode_fh(u32 *p, struct svc_fh *fhp)
+{
+ memcpy(p, &fhp->fh_handle.fh_base, NFS_FHSIZE);
+ return p + (NFS_FHSIZE>> 2);
+}
+
+/*
+ * Decode a file name and make sure that the path contains
+ * no slashes or null bytes.
+ */
+static inline u32 *
+decode_filename(u32 *p, char **namp, int *lenp)
+{
+ char *name;
+ int i;
+
+ if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXNAMLEN)) != NULL) {
+ for (i = 0, name = *namp; i < *lenp; i++, name++) {
+ if (*name == '\0' || *name == '/')
+ return NULL;
+ }
+ }
+
+ return p;
+}
+
+static inline u32 *
+decode_pathname(u32 *p, char **namp, int *lenp)
+{
+ char *name;
+ int i;
+
+ if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXPATHLEN)) != NULL) {
+ for (i = 0, name = *namp; i < *lenp; i++, name++) {
+ if (*name == '\0')
+ return NULL;
+ }
+ }
+
+ return p;
+}
+
+static inline u32 *
+decode_sattr(u32 *p, struct iattr *iap)
+{
+ u32 tmp, tmp1;
+
+ iap->ia_valid = 0;
+
+ /* Sun client bug compatibility check: some sun clients seem to
+ * put 0xffff in the mode field when they mean 0xffffffff.
+ * Quoting the 4.4BSD nfs server code: Nah nah nah nah na nah.
+ */
+ if ((tmp = ntohl(*p++)) != (u32)-1 && tmp != 0xffff) {
+ iap->ia_valid |= ATTR_MODE;
+ iap->ia_mode = tmp;
+ }
+ if ((tmp = ntohl(*p++)) != (u32)-1) {
+ iap->ia_valid |= ATTR_UID;
+ iap->ia_uid = tmp;
+ }
+ if ((tmp = ntohl(*p++)) != (u32)-1) {
+ iap->ia_valid |= ATTR_GID;
+ iap->ia_gid = tmp;
+ }
+ if ((tmp = ntohl(*p++)) != (u32)-1) {
+ iap->ia_valid |= ATTR_SIZE;
+ iap->ia_size = tmp;
+ }
+ tmp = ntohl(*p++); tmp1 = ntohl(*p++);
+ if (tmp != (u32)-1 && tmp1 != (u32)-1) {
+ iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
+ iap->ia_atime.tv_sec = tmp;
+ iap->ia_atime.tv_nsec = tmp1 * 1000;
+ }
+ tmp = ntohl(*p++); tmp1 = ntohl(*p++);
+ if (tmp != (u32)-1 && tmp1 != (u32)-1) {
+ iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
+ iap->ia_mtime.tv_sec = tmp;
+ iap->ia_mtime.tv_nsec = tmp1 * 1000;
+ /*
+ * Passing the invalid value useconds=1000000 for mtime
+ * is a Sun convention for "set both mtime and atime to
+ * current server time". It's needed to make permissions
+ * checks for the "touch" program across v2 mounts to
+ * Solaris and Irix boxes work correctly. See description of
+ * sattr in section 6.1 of "NFS Illustrated" by
+ * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
+ */
+ if (tmp1 == 1000000)
+ iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET);
+ }
+ return p;
+}
+
+static inline u32 *
+encode_fattr(struct svc_rqst *rqstp, u32 *p, struct svc_fh *fhp)
+{
+ struct vfsmount *mnt = fhp->fh_export->ex_mnt;
+ struct dentry *dentry = fhp->fh_dentry;
+ struct kstat stat;
+ int type;
+ struct timespec time;
+
+ vfs_getattr(mnt, dentry, &stat);
+ type = (stat.mode & S_IFMT);
+
+ *p++ = htonl(nfs_ftypes[type >> 12]);
+ *p++ = htonl((u32) stat.mode);
+ *p++ = htonl((u32) stat.nlink);
+ *p++ = htonl((u32) nfsd_ruid(rqstp, stat.uid));
+ *p++ = htonl((u32) nfsd_rgid(rqstp, stat.gid));
+
+ if (S_ISLNK(type) && stat.size > NFS_MAXPATHLEN) {
+ *p++ = htonl(NFS_MAXPATHLEN);
+ } else {
+ *p++ = htonl((u32) stat.size);
+ }
+ *p++ = htonl((u32) stat.blksize);
+ if (S_ISCHR(type) || S_ISBLK(type))
+ *p++ = htonl(new_encode_dev(stat.rdev));
+ else
+ *p++ = htonl(0xffffffff);
+ *p++ = htonl((u32) stat.blocks);
+ if (is_fsid(fhp, rqstp->rq_reffh))
+ *p++ = htonl((u32) fhp->fh_export->ex_fsid);
+ else
+ *p++ = htonl(new_encode_dev(stat.dev));
+ *p++ = htonl((u32) stat.ino);
+ *p++ = htonl((u32) stat.atime.tv_sec);
+ *p++ = htonl(stat.atime.tv_nsec ? stat.atime.tv_nsec / 1000 : 0);
+ lease_get_mtime(dentry->d_inode, &time);
+ *p++ = htonl((u32) time.tv_sec);
+ *p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0);
+ *p++ = htonl((u32) stat.ctime.tv_sec);
+ *p++ = htonl(stat.ctime.tv_nsec ? stat.ctime.tv_nsec / 1000 : 0);
+
+ return p;
+}
+
+
+/*
+ * XDR decode functions
+ */
+int
+nfssvc_decode_void(struct svc_rqst *rqstp, u32 *p, void *dummy)
+{
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_fhandle(struct svc_rqst *rqstp, u32 *p, struct nfsd_fhandle *args)
+{
+ if (!(p = decode_fh(p, &args->fh)))
+ return 0;
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_sattrargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_sattrargs *args)
+{
+ if (!(p = decode_fh(p, &args->fh))
+ || !(p = decode_sattr(p, &args->attrs)))
+ return 0;
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_diropargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_diropargs *args)
+{
+ if (!(p = decode_fh(p, &args->fh))
+ || !(p = decode_filename(p, &args->name, &args->len)))
+ return 0;
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_readargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_readargs *args)
+{
+ unsigned int len;
+ int v,pn;
+ if (!(p = decode_fh(p, &args->fh)))
+ return 0;
+
+ args->offset = ntohl(*p++);
+ len = args->count = ntohl(*p++);
+ p++; /* totalcount - unused */
+
+ if (len > NFSSVC_MAXBLKSIZE)
+ len = NFSSVC_MAXBLKSIZE;
+
+ /* set up somewhere to store response.
+ * We take pages, put them on reslist and include in iovec
+ */
+ v=0;
+ while (len > 0) {
+ pn=rqstp->rq_resused;
+ svc_take_page(rqstp);
+ args->vec[v].iov_base = page_address(rqstp->rq_respages[pn]);
+ args->vec[v].iov_len = len < PAGE_SIZE?len:PAGE_SIZE;
+ len -= args->vec[v].iov_len;
+ v++;
+ }
+ args->vlen = v;
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_writeargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_writeargs *args)
+{
+ unsigned int len;
+ int v;
+ if (!(p = decode_fh(p, &args->fh)))
+ return 0;
+
+ p++; /* beginoffset */
+ args->offset = ntohl(*p++); /* offset */
+ p++; /* totalcount */
+ len = args->len = ntohl(*p++);
+ args->vec[0].iov_base = (void*)p;
+ args->vec[0].iov_len = rqstp->rq_arg.head[0].iov_len -
+ (((void*)p) - rqstp->rq_arg.head[0].iov_base);
+ if (len > NFSSVC_MAXBLKSIZE)
+ len = NFSSVC_MAXBLKSIZE;
+ v = 0;
+ while (len > args->vec[v].iov_len) {
+ len -= args->vec[v].iov_len;
+ v++;
+ args->vec[v].iov_base = page_address(rqstp->rq_argpages[v]);
+ args->vec[v].iov_len = PAGE_SIZE;
+ }
+ args->vec[v].iov_len = len;
+ args->vlen = v+1;
+ return args->vec[0].iov_len > 0;
+}
+
+int
+nfssvc_decode_createargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_createargs *args)
+{
+ if (!(p = decode_fh(p, &args->fh))
+ || !(p = decode_filename(p, &args->name, &args->len))
+ || !(p = decode_sattr(p, &args->attrs)))
+ return 0;
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_renameargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_renameargs *args)
+{
+ if (!(p = decode_fh(p, &args->ffh))
+ || !(p = decode_filename(p, &args->fname, &args->flen))
+ || !(p = decode_fh(p, &args->tfh))
+ || !(p = decode_filename(p, &args->tname, &args->tlen)))
+ return 0;
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, u32 *p, struct nfsd_readlinkargs *args)
+{
+ if (!(p = decode_fh(p, &args->fh)))
+ return 0;
+ svc_take_page(rqstp);
+ args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused-1]);
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_linkargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_linkargs *args)
+{
+ if (!(p = decode_fh(p, &args->ffh))
+ || !(p = decode_fh(p, &args->tfh))
+ || !(p = decode_filename(p, &args->tname, &args->tlen)))
+ return 0;
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_symlinkargs *args)
+{
+ if (!(p = decode_fh(p, &args->ffh))
+ || !(p = decode_filename(p, &args->fname, &args->flen))
+ || !(p = decode_pathname(p, &args->tname, &args->tlen))
+ || !(p = decode_sattr(p, &args->attrs)))
+ return 0;
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+int
+nfssvc_decode_readdirargs(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_readdirargs *args)
+{
+ if (!(p = decode_fh(p, &args->fh)))
+ return 0;
+ args->cookie = ntohl(*p++);
+ args->count = ntohl(*p++);
+ if (args->count > PAGE_SIZE)
+ args->count = PAGE_SIZE;
+
+ svc_take_page(rqstp);
+ args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused-1]);
+
+ return xdr_argsize_check(rqstp, p);
+}
+
+/*
+ * XDR encode functions
+ */
+int
+nfssvc_encode_void(struct svc_rqst *rqstp, u32 *p, void *dummy)
+{
+ return xdr_ressize_check(rqstp, p);
+}
+
+int
+nfssvc_encode_attrstat(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_attrstat *resp)
+{
+ p = encode_fattr(rqstp, p, &resp->fh);
+ return xdr_ressize_check(rqstp, p);
+}
+
+int
+nfssvc_encode_diropres(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_diropres *resp)
+{
+ p = encode_fh(p, &resp->fh);
+ p = encode_fattr(rqstp, p, &resp->fh);
+ return xdr_ressize_check(rqstp, p);
+}
+
+int
+nfssvc_encode_readlinkres(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_readlinkres *resp)
+{
+ *p++ = htonl(resp->len);
+ xdr_ressize_check(rqstp, p);
+ rqstp->rq_res.page_len = resp->len;
+ if (resp->len & 3) {
+ /* need to pad the tail */
+ rqstp->rq_restailpage = 0;
+ rqstp->rq_res.tail[0].iov_base = p;
+ *p = 0;
+ rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3);
+ }
+ return 1;
+}
+
+int
+nfssvc_encode_readres(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_readres *resp)
+{
+ p = encode_fattr(rqstp, p, &resp->fh);
+ *p++ = htonl(resp->count);
+ xdr_ressize_check(rqstp, p);
+
+ /* now update rqstp->rq_res to reflect data aswell */
+ rqstp->rq_res.page_len = resp->count;
+ if (resp->count & 3) {
+ /* need to pad the tail */
+ rqstp->rq_restailpage = 0;
+ rqstp->rq_res.tail[0].iov_base = p;
+ *p = 0;
+ rqstp->rq_res.tail[0].iov_len = 4 - (resp->count&3);
+ }
+ return 1;
+}
+
+int
+nfssvc_encode_readdirres(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_readdirres *resp)
+{
+ xdr_ressize_check(rqstp, p);
+ p = resp->buffer;
+ *p++ = 0; /* no more entries */
+ *p++ = htonl((resp->common.err == nfserr_eof));
+ rqstp->rq_res.page_len = (((unsigned long)p-1) & ~PAGE_MASK)+1;
+
+ return 1;
+}
+
+int
+nfssvc_encode_statfsres(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_statfsres *resp)
+{
+ struct kstatfs *stat = &resp->stats;
+
+ *p++ = htonl(NFSSVC_MAXBLKSIZE); /* max transfer size */
+ *p++ = htonl(stat->f_bsize);
+ *p++ = htonl(stat->f_blocks);
+ *p++ = htonl(stat->f_bfree);
+ *p++ = htonl(stat->f_bavail);
+ return xdr_ressize_check(rqstp, p);
+}
+
+int
+nfssvc_encode_entry(struct readdir_cd *ccd, const char *name,
+ int namlen, loff_t offset, ino_t ino, unsigned int d_type)
+{
+ struct nfsd_readdirres *cd = container_of(ccd, struct nfsd_readdirres, common);
+ u32 *p = cd->buffer;
+ int buflen, slen;
+
+ /*
+ dprintk("nfsd: entry(%.*s off %ld ino %ld)\n",
+ namlen, name, offset, ino);
+ */
+
+ if (offset > ~((u32) 0)) {
+ cd->common.err = nfserr_fbig;
+ return -EINVAL;
+ }
+ if (cd->offset)
+ *cd->offset = htonl(offset);
+ if (namlen > NFS2_MAXNAMLEN)
+ namlen = NFS2_MAXNAMLEN;/* truncate filename */
+
+ slen = XDR_QUADLEN(namlen);
+ if ((buflen = cd->buflen - slen - 4) < 0) {
+ cd->common.err = nfserr_toosmall;
+ return -EINVAL;
+ }
+ *p++ = xdr_one; /* mark entry present */
+ *p++ = htonl((u32) ino); /* file id */
+ p = xdr_encode_array(p, name, namlen);/* name length & name */
+ cd->offset = p; /* remember pointer */
+ *p++ = ~(u32) 0; /* offset of next entry */
+
+ cd->buflen = buflen;
+ cd->buffer = p;
+ cd->common.err = nfs_ok;
+ return 0;
+}
+
+/*
+ * XDR release functions
+ */
+int
+nfssvc_release_fhandle(struct svc_rqst *rqstp, u32 *p,
+ struct nfsd_fhandle *resp)
+{
+ fh_put(&resp->fh);
+ return 1;
+}