int nfs_proc_readlink(struct nfs_server *server, struct nfs_fh *fhandle,
int **p0, char **string, unsigned int *len, unsigned int maxlen)
{
int *p;
int status, ruid = 0;
PRINTK("NFS call readlink\n");
if (!(*p0 = nfs_rpc_alloc(server->rsize)))
return -EIO;
retry:
p = nfs_rpc_header(*p0, NFSPROC_READLINK, ruid);
p = xdr_encode_fhandle(p, fhandle);
if ((status = nfs_rpc_call(server, *p0, p, server->rsize)) < 0)
return status;
if (!(p = nfs_rpc_verify(*p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
if (!(p = xdr_decode_string2(p, string, len, maxlen))) {
printk("nfs_proc_readlink: giant pathname\n");
status = -errno_NFSERR_IO;
}
else /* status = 0, */
PRINTK("NFS reply readlink\n");
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply readlink failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
return status;
}
int nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *res)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call statfs\n");
if (!(p0 = nfs_rpc_alloc(server->rsize)))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_STATFS, ruid);
p = xdr_encode_fhandle(p, fhandle);
if ((status = nfs_rpc_call(server, p0, p, server->rsize)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
p = xdr_decode_fsinfo(p, res);
PRINTK("NFS reply statfs\n");
/* status = 0; */
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply statfs failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
nfs_rpc_free(p0);
return status;
}
int nfs_proc_rmdir(struct nfs_server *server, struct nfs_fh *dir, const char *name)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call rmdir %s\n", name);
if (!(p0 = nfs_rpc_alloc(server->wsize)))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_RMDIR, ruid);
p = xdr_encode_fhandle(p, dir);
p = xdr_encode_string(p, name);
if ((status = nfs_rpc_call(server, p0, p, server->wsize)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
PRINTK("NFS reply rmdir\n");
/* status = 0; */
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply rmdir failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
nfs_rpc_free(p0);
return status;
}
int nfs_proc_symlink(struct nfs_server *server, struct nfs_fh *dir,
const char *name, const char *path, struct nfs_sattr *sattr)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call symlink %s -> %s\n", name, path);
if (!(p0 = nfs_rpc_alloc()))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_SYMLINK, ruid);
p = xdr_encode_fhandle(p, dir);
p = xdr_encode_string(p, name);
p = xdr_encode_string(p, path);
p = xdr_encode_sattr(p, sattr);
if ((status = nfs_rpc_call(server, p0, p)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
PRINTK("NFS reply symlink\n");
}
else {
if (!ruid && current->euid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply symlink failed = %d\n", status);
}
nfs_rpc_free(p0);
return -nfs_stat_to_errno(status);
}
int nfs_proc_setattr(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_sattr *sattr, struct nfs_fattr *fattr)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call setattr\n");
if (!(p0 = nfs_rpc_alloc()))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_SETATTR, ruid);
p = xdr_encode_fhandle(p, fhandle);
p = xdr_encode_sattr(p, sattr);
if ((status = nfs_rpc_call(server, p0, p)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
p = xdr_decode_fattr(p, fattr);
PRINTK("NFS reply setattr\n");
}
else {
if (!ruid && current->euid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply setattr failed = %d\n", status);
}
nfs_rpc_free(p0);
return -nfs_stat_to_errno(status);
}
int nfs_proc_readdir(struct nfs_server *server, struct nfs_fh *fhandle,
int cookie, int count, struct nfs_entry *entry)
{
int *p, *p0;
int status;
int ruid = 0;
int i;
int size;
int eof;
PRINTK("NFS call readdir %d @ %d\n", count, cookie);
size = server->rsize;
if (!(p0 = nfs_rpc_alloc(server->rsize)))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_READDIR, ruid);
p = xdr_encode_fhandle(p, fhandle);
*p++ = htonl(cookie);
*p++ = htonl(size);
if ((status = nfs_rpc_call(server, p0, p, server->rsize)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
for (i = 0; i < count && *p++; i++) {
if (!(p = xdr_decode_entry(p, entry++)))
break;
}
if (!p) {
printk("nfs_proc_readdir: giant filename\n");
status = -errno_NFSERR_IO;
}
else {
eof = (i == count && !*p++ && *p++)
|| (i < count && *p++);
if (eof && i)
entry[-1].eof = 1;
PRINTK("NFS reply readdir %d %s\n", i,
eof ? "eof" : "");
status = i;
}
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply readdir failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
nfs_rpc_free(p0);
return status;
}
int nfs_proc_read(struct nfs_server *server, struct nfs_fh *fhandle,
int offset, int count, char *data, struct nfs_fattr *fattr, int fs)
{
int *p, *p0;
int status;
int ruid = 0;
int len;
PRINTK("NFS call read %d @ %d\n", count, offset);
if (!(p0 = nfs_rpc_alloc(server->rsize)))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_READ, ruid);
p = xdr_encode_fhandle(p, fhandle);
*p++ = htonl(offset);
*p++ = htonl(count);
*p++ = htonl(count); /* traditional, could be any value */
if ((status = nfs_rpc_call(server, p0, p, server->rsize)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
p = xdr_decode_fattr(p, fattr);
if (!(p = xdr_decode_data(p, data, &len, count, fs))) {
printk("nfs_proc_read: giant data size\n");
status = -errno_NFSERR_IO;
}
else {
status = len;
PRINTK("NFS reply read %d\n", len);
}
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply read failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
nfs_rpc_free(p0);
return status;
}
int nfs_proc_lookup(struct nfs_server *server, struct nfs_fh *dir, const char *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call lookup %s\n", name);
#ifdef NFS_PROC_DEBUG
if (!strcmp(name, "xyzzy"))
proc_debug = 1 - proc_debug;
#endif
if (!(p0 = nfs_rpc_alloc(server->rsize)))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_LOOKUP, ruid);
p = xdr_encode_fhandle(p, dir);
p = xdr_encode_string(p, name);
if ((status = nfs_rpc_call(server, p0, p, server->rsize)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
p = xdr_decode_fhandle(p, fhandle);
p = xdr_decode_fattr(p, fattr);
PRINTK("NFS reply lookup\n");
/* status = 0; */
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply lookup failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
nfs_rpc_free(p0);
return status;
}
int nfs_proc_write(struct nfs_server *server, struct nfs_fh *fhandle,
int offset, int count, char *data, struct nfs_fattr *fattr)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call write %d @ %d\n", count, offset);
if (!(p0 = nfs_rpc_alloc(server->wsize)))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_WRITE, ruid);
p = xdr_encode_fhandle(p, fhandle);
*p++ = htonl(offset); /* traditional, could be any value */
*p++ = htonl(offset);
*p++ = htonl(count); /* traditional, could be any value */
p = xdr_encode_data(p, data, count);
if ((status = nfs_rpc_call(server, p0, p, server->wsize)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = -errno_NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
p = xdr_decode_fattr(p, fattr);
PRINTK("NFS reply write\n");
/* status = 0; */
}
else {
if (!ruid && current->fsuid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply write failed = %d\n", status);
status = -nfs_stat_to_errno(status);
}
nfs_rpc_free(p0);
return status;
}
int nfs_proc_readlink(struct nfs_server *server, struct nfs_fh *fhandle,
char *res)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call readlink\n");
if (!(p0 = nfs_rpc_alloc()))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_READLINK, ruid);
p = xdr_encode_fhandle(p, fhandle);
if ((status = nfs_rpc_call(server, p0, p)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
if (!(p = xdr_decode_string(p, res, NFS_MAXPATHLEN))) {
printk("nfs_proc_readlink: giant pathname\n");
status = NFSERR_IO;
}
else
PRINTK("NFS reply readlink %s\n", res);
}
else {
if (!ruid && current->euid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply readlink failed = %d\n", status);
}
nfs_rpc_free(p0);
return -nfs_stat_to_errno(status);
}
int nfs_proc_rename(struct nfs_server *server,
struct nfs_fh *old_dir, const char *old_name,
struct nfs_fh *new_dir, const char *new_name)
{
int *p, *p0;
int status;
int ruid = 0;
PRINTK("NFS call rename %s -> %s\n", old_name, new_name);
if (!(p0 = nfs_rpc_alloc()))
return -EIO;
retry:
p = nfs_rpc_header(p0, NFSPROC_RENAME, ruid);
p = xdr_encode_fhandle(p, old_dir);
p = xdr_encode_string(p, old_name);
p = xdr_encode_fhandle(p, new_dir);
p = xdr_encode_string(p, new_name);
if ((status = nfs_rpc_call(server, p0, p)) < 0) {
nfs_rpc_free(p0);
return status;
}
if (!(p = nfs_rpc_verify(p0)))
status = NFSERR_IO;
else if ((status = ntohl(*p++)) == NFS_OK) {
PRINTK("NFS reply rename\n");
}
else {
if (!ruid && current->euid == 0 && current->uid != 0) {
ruid = 1;
goto retry;
}
PRINTK("NFS reply rename failed = %d\n", status);
}
nfs_rpc_free(p0);
return -nfs_stat_to_errno(status);
}