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authorRichard Sharpe <realrichardsharpe@gmail.com>2011-09-16 11:52:22 -0700
committerRichard Sharpe <realrichardsharpe@gmail.com>2011-10-01 07:02:20 -0700
commitc875ab8747d65cc6556228616f076b0928013c87 (patch)
treebc7b582ac872d66273e8a1cd643770d6b01aa63a /source3/modules
parente8f143a45cceb8d2c01d45167a0c90d5c7f38289 (diff)
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Move FSCTL handling into the VFS. Initial code changes. Passes smbtorture NTTRANS-FSCTL. Test added to selftests.
Diffstat (limited to 'source3/modules')
-rw-r--r--source3/modules/vfs_default.c335
1 files changed, 335 insertions, 0 deletions
diff --git a/source3/modules/vfs_default.c b/source3/modules/vfs_default.c
index 55b6bc7bfc..d1bf95eb23 100644
--- a/source3/modules/vfs_default.c
+++ b/source3/modules/vfs_default.c
@@ -24,6 +24,8 @@
#include "smbd/smbd.h"
#include "ntioctl.h"
#include "smbprofile.h"
+#include "../libcli/security/security.h"
+#include "passdb/lookup_sid.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
@@ -591,6 +593,338 @@ static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
return NT_STATUS_NONE_MAPPED;
}
+/*
+ * Implement the default fsctl operation.
+ */
+static bool vfswrap_logged_ioctl_message = false;
+
+static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ TALLOC_CTX *ctx,
+ uint32_t function,
+ uint16_t req_flags, /* Needed for UNICODE ... */
+ const uint8_t *_in_data,
+ uint32_t in_len,
+ uint8_t **_out_data,
+ uint32_t max_out_len,
+ uint32_t *out_len)
+{
+ const char *in_data = (const char *)_in_data;
+ char **out_data = (char **)_out_data;
+
+ switch (function) {
+ case FSCTL_SET_SPARSE:
+ {
+ bool set_sparse = true;
+ NTSTATUS status;
+
+ if (in_len >= 1 && in_data[0] == 0) {
+ set_sparse = false;
+ }
+
+ status = file_set_sparse(handle->conn, fsp, set_sparse);
+
+ DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
+ ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
+ smb_fname_str_dbg(fsp->fsp_name), set_sparse,
+ nt_errstr(status)));
+
+ return status;
+ }
+
+ case FSCTL_CREATE_OR_GET_OBJECT_ID:
+ {
+ unsigned char objid[16];
+ char *return_data = NULL;
+
+ /* This should return the object-id on this file.
+ * I think I'll make this be the inode+dev. JRA.
+ */
+
+ DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on FID[0x%04X]\n",fsp->fnum));
+
+ *out_len = (max_out_len >= 64) ? 64 : max_out_len;
+ /* Hmmm, will this cause problems if less data asked for? */
+ return_data = talloc_array(ctx, char, 64);
+ if (return_data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* For backwards compatibility only store the dev/inode. */
+ push_file_id_16(return_data, &fsp->file_id);
+ memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
+ push_file_id_16(return_data+32, &fsp->file_id);
+ *out_data = return_data;
+ return NT_STATUS_OK;
+ }
+
+ case FSCTL_GET_REPARSE_POINT:
+ {
+ /* Fail it with STATUS_NOT_A_REPARSE_POINT */
+ DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on FID[0x%04X] Status: NOT_IMPLEMENTED\n", fsp->fnum));
+ return NT_STATUS_NOT_A_REPARSE_POINT;
+ }
+
+ case FSCTL_SET_REPARSE_POINT:
+ {
+ /* Fail it with STATUS_NOT_A_REPARSE_POINT */
+ DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on FID[0x%04X] Status: NOT_IMPLEMENTED\n", fsp->fnum));
+ return NT_STATUS_NOT_A_REPARSE_POINT;
+ }
+
+ case FSCTL_GET_SHADOW_COPY_DATA:
+ {
+ /*
+ * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
+ * and return their volume names. If max_data_count is 16, then it is just
+ * asking for the number of volumes and length of the combined names.
+ *
+ * pdata is the data allocated by our caller, but that uses
+ * total_data_count (which is 0 in our case) rather than max_data_count.
+ * Allocate the correct amount and return the pointer to let
+ * it be deallocated when we return.
+ */
+ struct shadow_copy_data *shadow_data = NULL;
+ bool labels = False;
+ uint32 labels_data_count = 0;
+ uint32 i;
+ char *cur_pdata = NULL;
+
+ if (max_out_len < 16) {
+ DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
+ max_out_len));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (max_out_len > 16) {
+ labels = True;
+ }
+
+ shadow_data = talloc_zero(ctx, struct shadow_copy_data);
+ if (shadow_data == NULL) {
+ DEBUG(0,("TALLOC_ZERO() failed!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /*
+ * Call the VFS routine to actually do the work.
+ */
+ if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
+ TALLOC_FREE(shadow_data);
+ if (errno == ENOSYS) {
+ DEBUG(5,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, not supported.\n",
+ fsp->conn->connectpath));
+ return NT_STATUS_NOT_SUPPORTED;
+ } else {
+ DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, failed.\n",
+ fsp->conn->connectpath));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ }
+
+ labels_data_count = (shadow_data->num_volumes * 2 *
+ sizeof(SHADOW_COPY_LABEL)) + 2;
+
+ if (!labels) {
+ *out_len = 16;
+ } else {
+ *out_len = 12 + labels_data_count + 4;
+ }
+
+ if (max_out_len < *out_len) {
+ DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
+ max_out_len, *out_len));
+ TALLOC_FREE(shadow_data);
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ cur_pdata = talloc_array(ctx, char, *out_len);
+ if (cur_pdata == NULL) {
+ TALLOC_FREE(shadow_data);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ *out_data = cur_pdata;
+
+ /* num_volumes 4 bytes */
+ SIVAL(cur_pdata, 0, shadow_data->num_volumes);
+
+ if (labels) {
+ /* num_labels 4 bytes */
+ SIVAL(cur_pdata, 4, shadow_data->num_volumes);
+ }
+
+ /* needed_data_count 4 bytes */
+ SIVAL(cur_pdata, 8, labels_data_count + 4);
+
+ cur_pdata += 12;
+
+ DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
+ shadow_data->num_volumes, fsp_str_dbg(fsp)));
+ if (labels && shadow_data->labels) {
+ for (i=0; i<shadow_data->num_volumes; i++) {
+ srvstr_push(cur_pdata, req_flags,
+ cur_pdata, shadow_data->labels[i],
+ 2 * sizeof(SHADOW_COPY_LABEL),
+ STR_UNICODE|STR_TERMINATE);
+ cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
+ DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
+ }
+ }
+
+ TALLOC_FREE(shadow_data);
+
+ return NT_STATUS_OK;
+ }
+
+ case FSCTL_FIND_FILES_BY_SID:
+ {
+ /* pretend this succeeded -
+ *
+ * we have to send back a list with all files owned by this SID
+ *
+ * but I have to check that --metze
+ */
+ struct dom_sid sid;
+ uid_t uid;
+ size_t sid_len;
+
+ DEBUG(10,("FSCTL_FIND_FILES_BY_SID: called on FID[0x%04X]\n", fsp->fnum));
+
+ if (in_len < 8) {
+ /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ sid_len = MIN(in_len - 4,SID_MAX_SIZE);
+
+ /* unknown 4 bytes: this is not the length of the sid :-( */
+ /*unknown = IVAL(pdata,0);*/
+
+ if (!sid_parse(in_data + 4, sid_len, &sid)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
+
+ if (!sid_to_uid(&sid, &uid)) {
+ DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
+ sid_string_dbg(&sid),
+ (unsigned long)sid_len));
+ uid = (-1);
+ }
+
+ /* we can take a look at the find source :-)
+ *
+ * find ./ -uid $uid -name '*' is what we need here
+ *
+ *
+ * and send 4bytes len and then NULL terminated unicode strings
+ * for each file
+ *
+ * but I don't know how to deal with the paged results
+ * (maybe we can hang the result anywhere in the fsp struct)
+ *
+ * but I don't know how to deal with the paged results
+ * (maybe we can hang the result anywhere in the fsp struct)
+ *
+ * we don't send all files at once
+ * and at the next we should *not* start from the beginning,
+ * so we have to cache the result
+ *
+ * --metze
+ */
+
+ /* this works for now... */
+ return NT_STATUS_OK;
+ }
+
+ case FSCTL_QUERY_ALLOCATED_RANGES:
+ {
+ /* FIXME: This is just a dummy reply, telling that all of the
+ * file is allocated. MKS cp needs that.
+ * Adding the real allocated ranges via FIEMAP on Linux
+ * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
+ * this FSCTL correct for sparse files.
+ */
+ NTSTATUS status;
+ uint64_t offset, length;
+ char *out_data_tmp = NULL;
+
+ if (in_len != 16) {
+ DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
+ in_len));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (max_out_len < 16) {
+ DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
+ max_out_len));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ offset = BVAL(in_data,0);
+ length = BVAL(in_data,8);
+
+ if (offset + length < offset) {
+ /* No 64-bit integer wrap. */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Shouldn't this be SMB_VFS_STAT ... ? */
+ status = vfs_stat_fsp(fsp);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ *out_len = 16;
+ out_data_tmp = talloc_array(ctx, char, *out_len);
+ if (out_data_tmp == NULL) {
+ DEBUG(10, ("unable to allocate memory for response\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (offset > fsp->fsp_name->st.st_ex_size ||
+ fsp->fsp_name->st.st_ex_size == 0 ||
+ length == 0) {
+ memset(out_data_tmp, 0, *out_len);
+ } else {
+ uint64_t end = offset + length;
+ end = MIN(end, fsp->fsp_name->st.st_ex_size);
+ SBVAL(out_data_tmp, 0, 0);
+ SBVAL(out_data_tmp, 8, end);
+ }
+
+ *out_data = out_data_tmp;
+
+ return NT_STATUS_OK;
+ }
+
+ case FSCTL_IS_VOLUME_DIRTY:
+ {
+ DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on FID[0x%04X] "
+ "(but not implemented)\n", fsp->fnum));
+ /*
+ * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
+ * says we have to respond with NT_STATUS_INVALID_PARAMETER
+ */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ default:
+ /*
+ * Only print once ... unfortunately there could be lots of
+ * different FSCTLs that are called.
+ */
+ if (!vfswrap_logged_ioctl_message) {
+ vfswrap_logged_ioctl_message = true;
+ DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
+ __func__, function));
+ }
+ }
+
+ return NT_STATUS_NOT_SUPPORTED;
+}
+
/********************************************************************
Given a stat buffer return the allocated size on disk, taking into
account sparse files.
@@ -1732,6 +2066,7 @@ static struct vfs_fn_pointers vfs_default_fns = {
.strict_lock = vfswrap_strict_lock,
.strict_unlock = vfswrap_strict_unlock,
.translate_name = vfswrap_translate_name,
+ .fsctl = vfswrap_fsctl,
/* NT ACL operations. */