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-rw-r--r--source3/smbd/vfs.c2661
1 files changed, 2661 insertions, 0 deletions
diff --git a/source3/smbd/vfs.c b/source3/smbd/vfs.c
new file mode 100644
index 0000000..0b061f1
--- /dev/null
+++ b/source3/smbd/vfs.c
@@ -0,0 +1,2661 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 1.9.
+ VFS initialisation and support functions
+ Copyright (C) Tim Potter 1999
+ Copyright (C) Alexander Bokovoy 2002
+ Copyright (C) James Peach 2006
+ Copyright (C) Volker Lendecke 2009
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ This work was sponsored by Optifacio Software Services, Inc.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "../lib/util/memcache.h"
+#include "transfer_file.h"
+#include "ntioctl.h"
+#include "lib/util/tevent_unix.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "lib/util/sys_rw.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_VFS
+
+static_decl_vfs;
+
+struct vfs_fsp_data {
+ struct vfs_fsp_data *next;
+ struct vfs_handle_struct *owner;
+ void (*destroy)(void *p_data);
+ void *_dummy_;
+ /* NOTE: This structure contains four pointers so that we can guarantee
+ * that the end of the structure is always both 4-byte and 8-byte aligned.
+ */
+};
+
+struct vfs_init_function_entry {
+ char *name;
+ struct vfs_init_function_entry *prev, *next;
+ const struct vfs_fn_pointers *fns;
+};
+
+/****************************************************************************
+ maintain the list of available backends
+****************************************************************************/
+
+static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
+{
+ struct vfs_init_function_entry *entry = backends;
+
+ DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
+
+ while(entry) {
+ if (strcmp(entry->name, name)==0) return entry;
+ entry = entry->next;
+ }
+
+ return NULL;
+}
+
+NTSTATUS smb_register_vfs(int version, const char *name,
+ const struct vfs_fn_pointers *fns)
+{
+ struct vfs_init_function_entry *entry = backends;
+
+ if ((version != SMB_VFS_INTERFACE_VERSION)) {
+ DEBUG(0, ("Failed to register vfs module.\n"
+ "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
+ "current SMB_VFS_INTERFACE_VERSION is %d.\n"
+ "Please recompile against the current Samba Version!\n",
+ version, SMB_VFS_INTERFACE_VERSION));
+ return NT_STATUS_OBJECT_TYPE_MISMATCH;
+ }
+
+ if (!name || !name[0]) {
+ DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (vfs_find_backend_entry(name)) {
+ DEBUG(0,("VFS module %s already loaded!\n", name));
+ return NT_STATUS_OBJECT_NAME_COLLISION;
+ }
+
+ entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
+ entry->name = smb_xstrdup(name);
+ entry->fns = fns;
+
+ DLIST_ADD(backends, entry);
+ DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ initialise default vfs hooks
+****************************************************************************/
+
+static void vfs_init_default(connection_struct *conn)
+{
+ DEBUG(3, ("Initialising default vfs hooks\n"));
+ vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
+}
+
+/****************************************************************************
+ initialise custom vfs hooks
+ ****************************************************************************/
+
+bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
+{
+ char *module_path = NULL;
+ char *module_name = NULL;
+ char *module_param = NULL, *p;
+ vfs_handle_struct *handle;
+ const struct vfs_init_function_entry *entry;
+
+ if (!conn||!vfs_object||!vfs_object[0]) {
+ DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
+ "empty vfs_object!\n"));
+ return False;
+ }
+
+ if(!backends) {
+ static_init_vfs(NULL);
+ }
+
+ DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
+
+ module_path = smb_xstrdup(vfs_object);
+
+ p = strchr_m(module_path, ':');
+
+ if (p) {
+ *p = 0;
+ module_param = p+1;
+ trim_char(module_param, ' ', ' ');
+ }
+
+ trim_char(module_path, ' ', ' ');
+
+ module_name = smb_xstrdup(module_path);
+
+ if ((module_name[0] == '/') &&
+ (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
+
+ /*
+ * Extract the module name from the path. Just use the base
+ * name of the last path component.
+ */
+
+ SAFE_FREE(module_name);
+ module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
+
+ p = strchr_m(module_name, '.');
+
+ if (p != NULL) {
+ *p = '\0';
+ }
+ }
+
+ /* First, try to load the module with the new module system */
+ entry = vfs_find_backend_entry(module_name);
+ if (!entry) {
+ NTSTATUS status;
+
+ DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
+ vfs_object));
+
+ status = smb_load_module("vfs", module_path);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("error probing vfs module '%s': %s\n",
+ module_path, nt_errstr(status)));
+ goto fail;
+ }
+
+ entry = vfs_find_backend_entry(module_name);
+ if (!entry) {
+ DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
+ goto fail;
+ }
+ }
+
+ DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
+
+ handle = talloc_zero(conn, vfs_handle_struct);
+ if (!handle) {
+ DEBUG(0,("TALLOC_ZERO() failed!\n"));
+ goto fail;
+ }
+ handle->conn = conn;
+ handle->fns = entry->fns;
+ if (module_param) {
+ handle->param = talloc_strdup(conn, module_param);
+ }
+ DLIST_ADD(conn->vfs_handles, handle);
+
+ SAFE_FREE(module_path);
+ SAFE_FREE(module_name);
+ return True;
+
+ fail:
+ SAFE_FREE(module_path);
+ SAFE_FREE(module_name);
+ return False;
+}
+
+/*****************************************************************
+ Allow VFS modules to extend files_struct with VFS-specific state.
+ This will be ok for small numbers of extensions, but might need to
+ be refactored if it becomes more widely used.
+******************************************************************/
+
+#define EXT_DATA_AREA(e) ((uint8_t *)(e) + sizeof(struct vfs_fsp_data))
+
+void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
+ files_struct *fsp, size_t ext_size,
+ void (*destroy_fn)(void *p_data))
+{
+ struct vfs_fsp_data *ext;
+ void * ext_data;
+
+ /* Prevent VFS modules adding multiple extensions. */
+ if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
+ return ext_data;
+ }
+
+ ext = talloc_zero_size(
+ handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
+ if (ext == NULL) {
+ return NULL;
+ }
+
+ ext->owner = handle;
+ ext->next = fsp->vfs_extension;
+ ext->destroy = destroy_fn;
+ fsp->vfs_extension = ext;
+ return EXT_DATA_AREA(ext);
+}
+
+void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
+{
+ struct vfs_fsp_data *curr;
+ struct vfs_fsp_data *prev;
+
+ for (curr = fsp->vfs_extension, prev = NULL;
+ curr;
+ prev = curr, curr = curr->next) {
+ if (curr->owner == handle) {
+ if (prev) {
+ prev->next = curr->next;
+ } else {
+ fsp->vfs_extension = curr->next;
+ }
+ if (curr->destroy) {
+ curr->destroy(EXT_DATA_AREA(curr));
+ }
+ TALLOC_FREE(curr);
+ return;
+ }
+ }
+}
+
+void vfs_remove_all_fsp_extensions(files_struct *fsp)
+{
+ struct vfs_fsp_data *curr;
+ struct vfs_fsp_data *next;
+
+ for (curr = fsp->vfs_extension; curr; curr = next) {
+
+ next = curr->next;
+ fsp->vfs_extension = next;
+
+ if (curr->destroy) {
+ curr->destroy(EXT_DATA_AREA(curr));
+ }
+ TALLOC_FREE(curr);
+ }
+}
+
+void *vfs_memctx_fsp_extension(vfs_handle_struct *handle,
+ const struct files_struct *fsp)
+{
+ struct vfs_fsp_data *head;
+
+ for (head = fsp->vfs_extension; head; head = head->next) {
+ if (head->owner == handle) {
+ return head;
+ }
+ }
+
+ return NULL;
+}
+
+void *vfs_fetch_fsp_extension(vfs_handle_struct *handle,
+ const struct files_struct *fsp)
+{
+ struct vfs_fsp_data *head;
+
+ head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
+ if (head != NULL) {
+ return EXT_DATA_AREA(head);
+ }
+
+ return NULL;
+}
+
+#undef EXT_DATA_AREA
+
+/*
+ * Ensure this module catches all VFS functions.
+ */
+#ifdef DEVELOPER
+void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
+ const char *module)
+{
+ bool missing_fn = false;
+ unsigned int idx;
+ const uintptr_t *end = (const uintptr_t *)(fns + 1);
+
+ for (idx = 0; ((const uintptr_t *)fns + idx) < end; idx++) {
+ if (*((const uintptr_t *)fns + idx) == 0) {
+ DBG_ERR("VFS function at index %d not implemented "
+ "in module %s\n", idx, module);
+ missing_fn = true;
+ }
+ }
+
+ if (missing_fn) {
+ smb_panic("Required VFS function not implemented in module.\n");
+ }
+}
+#else
+void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
+ const char *module)
+{
+}
+#endif
+
+/*****************************************************************
+ Generic VFS init.
+******************************************************************/
+
+bool smbd_vfs_init(connection_struct *conn)
+{
+ const char **vfs_objects;
+ unsigned int i = 0;
+ int j = 0;
+
+ /* Normal share - initialise with disk access functions */
+ vfs_init_default(conn);
+
+ /* No need to load vfs modules for printer connections */
+ if (conn->printer) {
+ return True;
+ }
+
+ if (lp_widelinks(SNUM(conn))) {
+ /*
+ * As the widelinks logic is now moving into a
+ * vfs_widelinks module, we need to custom load
+ * it after the default module is initialized.
+ * That way no changes to smb.conf files are
+ * needed.
+ */
+ bool ok = vfs_init_custom(conn, "widelinks");
+ if (!ok) {
+ DBG_ERR("widelinks enabled and vfs_init_custom "
+ "failed for vfs_widelinks module\n");
+ return false;
+ }
+ }
+
+ vfs_objects = lp_vfs_objects(SNUM(conn));
+
+ /* Override VFS functions if 'vfs object' was not specified*/
+ if (!vfs_objects || !vfs_objects[0])
+ return True;
+
+ for (i=0; vfs_objects[i] ;) {
+ i++;
+ }
+
+ for (j=i-1; j >= 0; j--) {
+ if (!vfs_init_custom(conn, vfs_objects[j])) {
+ DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
+ return False;
+ }
+ }
+ return True;
+}
+
+/*******************************************************************
+ Check if a file exists in the vfs.
+********************************************************************/
+
+NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
+{
+ /* Only return OK if stat was successful and S_ISREG */
+ if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
+ S_ISREG(smb_fname->st.st_ex_mode)) {
+ return NT_STATUS_OK;
+ }
+
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+}
+
+bool vfs_valid_pread_range(off_t offset, size_t length)
+{
+ return sys_valid_io_range(offset, length);
+}
+
+bool vfs_valid_pwrite_range(off_t offset, size_t length)
+{
+ /*
+ * See MAXFILESIZE in [MS-FSA] 2.1.5.3 Server Requests a Write
+ */
+ static const uint64_t maxfilesize = 0xfffffff0000;
+ uint64_t last_byte_ofs;
+ bool ok;
+
+ ok = sys_valid_io_range(offset, length);
+ if (!ok) {
+ return false;
+ }
+
+ if (length == 0) {
+ return true;
+ }
+
+ last_byte_ofs = offset + length;
+ if (last_byte_ofs > maxfilesize) {
+ return false;
+ }
+
+ return true;
+}
+
+ssize_t vfs_pwrite_data(struct smb_request *req,
+ files_struct *fsp,
+ const char *buffer,
+ size_t N,
+ off_t offset)
+{
+ size_t total=0;
+ ssize_t ret;
+ bool ok;
+
+ ok = vfs_valid_pwrite_range(offset, N);
+ if (!ok) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (req && req->unread_bytes) {
+ int sockfd = req->xconn->transport.sock;
+ SMB_ASSERT(req->unread_bytes == N);
+ /* VFS_RECVFILE must drain the socket
+ * before returning. */
+ req->unread_bytes = 0;
+ /*
+ * Leave the socket non-blocking and
+ * use SMB_VFS_RECVFILE. If it returns
+ * EAGAIN || EWOULDBLOCK temporarily set
+ * the socket blocking and retry
+ * the RECVFILE.
+ */
+ while (total < N) {
+ ret = SMB_VFS_RECVFILE(sockfd,
+ fsp,
+ offset + total,
+ N - total);
+ if (ret == 0 || (ret == -1 &&
+ (errno == EAGAIN ||
+ errno == EWOULDBLOCK))) {
+ int old_flags;
+ /* Ensure the socket is blocking. */
+ old_flags = fcntl(sockfd, F_GETFL, 0);
+ if (set_blocking(sockfd, true) == -1) {
+ return (ssize_t)-1;
+ }
+ ret = SMB_VFS_RECVFILE(sockfd,
+ fsp,
+ offset + total,
+ N - total);
+ if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
+ return (ssize_t)-1;
+ }
+ if (ret == -1) {
+ return (ssize_t)-1;
+ }
+ total += ret;
+ return (ssize_t)total;
+ }
+ /* Any other error case. */
+ if (ret == -1) {
+ return ret;
+ }
+ total += ret;
+ }
+ return (ssize_t)total;
+ }
+
+ while (total < N) {
+ ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
+ offset + total);
+
+ if (ret == -1)
+ return -1;
+ if (ret == 0)
+ return total;
+
+ total += ret;
+ }
+ return (ssize_t)total;
+}
+/****************************************************************************
+ An allocate file space call using the vfs interface.
+ Allocates space for a file from a filedescriptor.
+ Returns 0 on success, -1 on failure.
+****************************************************************************/
+
+int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
+{
+ int ret;
+ connection_struct *conn = fsp->conn;
+ uint64_t space_avail;
+ uint64_t bsize,dfree,dsize;
+ NTSTATUS status;
+ bool ok;
+
+ /*
+ * Actually try and commit the space on disk....
+ */
+
+ DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
+ fsp_str_dbg(fsp), (double)len));
+
+ ok = vfs_valid_pwrite_range((off_t)len, 0);
+ if (!ok) {
+ DEBUG(0,("vfs_allocate_file_space: %s negative/invalid len "
+ "requested.\n", fsp_str_dbg(fsp)));
+ errno = EINVAL;
+ return -1;
+ }
+
+ status = vfs_stat_fsp(fsp);
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ }
+
+ if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
+ return 0;
+
+ if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
+ /* Shrink - use ftruncate. */
+
+ DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
+ "size %.0f\n", fsp_str_dbg(fsp),
+ (double)fsp->fsp_name->st.st_ex_size));
+
+ contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
+
+ ret = SMB_VFS_FTRUNCATE(fsp, (off_t)len);
+
+ contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
+
+ return ret;
+ }
+
+ /* Grow - we need to test if we have enough space. */
+
+ contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
+
+ if (lp_strict_allocate(SNUM(fsp->conn))) {
+ /* See if we have a syscall that will allocate beyond
+ end-of-file without changing EOF. */
+ ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_FL_KEEP_SIZE,
+ 0, len);
+ } else {
+ ret = 0;
+ }
+
+ contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
+
+ if (ret == 0) {
+ /* We changed the allocation size on disk, but not
+ EOF - exactly as required. We're done ! */
+ return 0;
+ }
+
+ if (ret == -1 && errno == ENOSPC) {
+ return -1;
+ }
+
+ len -= fsp->fsp_name->st.st_ex_size;
+ len /= 1024; /* Len is now number of 1k blocks needed. */
+ space_avail =
+ get_dfree_info(conn, fsp->fsp_name, &bsize, &dfree, &dsize);
+ if (space_avail == (uint64_t)-1) {
+ return -1;
+ }
+
+ DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
+ "needed blocks = %.0f, space avail = %.0f\n",
+ fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
+ (double)space_avail));
+
+ if (len > space_avail) {
+ errno = ENOSPC;
+ return -1;
+ }
+
+ return 0;
+}
+
+/****************************************************************************
+ A vfs set_filelen call.
+ set the length of a file from a filedescriptor.
+ Returns 0 on success, -1 on failure.
+****************************************************************************/
+
+int vfs_set_filelen(files_struct *fsp, off_t len)
+{
+ int ret;
+ bool ok;
+
+ ok = vfs_valid_pwrite_range(len, 0);
+ if (!ok) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
+
+ DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
+ fsp_str_dbg(fsp), (double)len));
+ if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
+ notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_SIZE
+ | FILE_NOTIFY_CHANGE_ATTRIBUTES,
+ fsp->fsp_name->base_name);
+ }
+
+ contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
+
+ return ret;
+}
+
+/****************************************************************************
+ A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
+ fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
+ as this is also called from the default SMB_VFS_FTRUNCATE code.
+ Always extends the file size.
+ Returns 0 on success, -1 on failure.
+****************************************************************************/
+
+#define SPARSE_BUF_WRITE_SIZE (32*1024)
+
+int vfs_slow_fallocate(files_struct *fsp, off_t offset, off_t len)
+{
+ ssize_t pwrite_ret;
+ size_t total = 0;
+ bool ok;
+
+ ok = vfs_valid_pwrite_range(offset, len);
+ if (!ok) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (!sparse_buf) {
+ sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
+ if (!sparse_buf) {
+ errno = ENOMEM;
+ return -1;
+ }
+ }
+
+ while (total < len) {
+ size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
+
+ pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
+ if (pwrite_ret == -1) {
+ int saved_errno = errno;
+ DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
+ "%s failed with error %s\n",
+ fsp_str_dbg(fsp), strerror(saved_errno)));
+ errno = saved_errno;
+ return -1;
+ }
+ total += pwrite_ret;
+ }
+
+ return 0;
+}
+
+/****************************************************************************
+ A vfs fill sparse call.
+ Writes zeros from the end of file to len, if len is greater than EOF.
+ Used only by strict_sync.
+ Returns 0 on success, -1 on failure.
+****************************************************************************/
+
+int vfs_fill_sparse(files_struct *fsp, off_t len)
+{
+ int ret;
+ NTSTATUS status;
+ off_t offset;
+ size_t num_to_write;
+ bool ok;
+
+ ok = vfs_valid_pwrite_range(len, 0);
+ if (!ok) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ status = vfs_stat_fsp(fsp);
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ }
+
+ if (len <= fsp->fsp_name->st.st_ex_size) {
+ return 0;
+ }
+
+#ifdef S_ISFIFO
+ if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
+ return 0;
+ }
+#endif
+
+ DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
+ "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
+ (double)fsp->fsp_name->st.st_ex_size, (double)len,
+ (double)(len - fsp->fsp_name->st.st_ex_size)));
+
+ contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
+
+ offset = fsp->fsp_name->st.st_ex_size;
+ num_to_write = len - fsp->fsp_name->st.st_ex_size;
+
+ /* Only do this on non-stream file handles. */
+ if (!fsp_is_alternate_stream(fsp)) {
+ /* for allocation try fallocate first. This can fail on some
+ * platforms e.g. when the filesystem doesn't support it and no
+ * emulation is being done by the libc (like on AIX with JFS1). In that
+ * case we do our own emulation. fallocate implementations can
+ * return ENOTSUP or EINVAL in cases like that. */
+ ret = SMB_VFS_FALLOCATE(fsp, 0, offset, num_to_write);
+ if (ret == -1 && errno == ENOSPC) {
+ goto out;
+ }
+ if (ret == 0) {
+ goto out;
+ }
+ DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
+ "error %d. Falling back to slow manual allocation\n", ret));
+ }
+
+ ret = vfs_slow_fallocate(fsp, offset, num_to_write);
+
+ out:
+
+ contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
+ return ret;
+}
+
+/*******************************************************************************
+ Set a fd into blocking/nonblocking mode through VFS
+*******************************************************************************/
+
+int vfs_set_blocking(files_struct *fsp, bool set)
+{
+ int val;
+#ifdef O_NONBLOCK
+#define FLAG_TO_SET O_NONBLOCK
+#else
+#ifdef SYSV
+#define FLAG_TO_SET O_NDELAY
+#else /* BSD */
+#define FLAG_TO_SET FNDELAY
+#endif
+#endif
+
+ if (fsp->fsp_flags.is_pathref) {
+ return 0;
+ }
+
+ val = SMB_VFS_FCNTL(fsp, F_GETFL, 0);
+ if (val == -1) {
+ return -1;
+ }
+
+ if (set) {
+ val &= ~FLAG_TO_SET;
+ } else {
+ val |= FLAG_TO_SET;
+ }
+
+ return SMB_VFS_FCNTL(fsp, F_SETFL, val);
+#undef FLAG_TO_SET
+}
+
+/****************************************************************************
+ Transfer some data (n bytes) between two file_struct's.
+****************************************************************************/
+
+static ssize_t vfs_pread_fn(void *file, void *buf, size_t len, off_t offset)
+{
+ struct files_struct *fsp = (struct files_struct *)file;
+
+ return SMB_VFS_PREAD(fsp, buf, len, offset);
+}
+
+static ssize_t vfs_pwrite_fn(void *file, const void *buf, size_t len, off_t offset)
+{
+ struct files_struct *fsp = (struct files_struct *)file;
+
+ return SMB_VFS_PWRITE(fsp, buf, len, offset);
+}
+
+off_t vfs_transfer_file(files_struct *in, files_struct *out, off_t n)
+{
+ return transfer_file_internal((void *)in, (void *)out, n,
+ vfs_pread_fn, vfs_pwrite_fn);
+}
+
+/*******************************************************************
+ A vfs_readdir wrapper which just returns the file name.
+********************************************************************/
+
+const char *vfs_readdirname(connection_struct *conn,
+ struct files_struct *dirfsp,
+ DIR *d,
+ char **talloced)
+{
+ struct dirent *ptr= NULL;
+ const char *dname;
+ char *translated;
+ NTSTATUS status;
+
+ if (d == NULL) {
+ return(NULL);
+ }
+
+ ptr = SMB_VFS_READDIR(conn, dirfsp, d);
+ if (!ptr)
+ return(NULL);
+
+ dname = ptr->d_name;
+
+ status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
+ talloc_tos(), &translated);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
+ *talloced = NULL;
+ return dname;
+ }
+ *talloced = translated;
+ if (!NT_STATUS_IS_OK(status)) {
+ return NULL;
+ }
+ return translated;
+}
+
+/*******************************************************************
+ A wrapper for vfs_chdir().
+********************************************************************/
+
+int vfs_ChDir(connection_struct *conn, const struct smb_filename *smb_fname)
+{
+ int ret;
+ struct smb_filename *cwd = NULL;
+
+ if (!LastDir) {
+ LastDir = SMB_STRDUP("");
+ }
+
+ if (ISDOT(smb_fname->base_name)) {
+ /*
+ * passing a '.' is a noop,
+ * and we only expect this after
+ * everything is initialized.
+ *
+ * So the first vfs_ChDir() on a given
+ * connection_struct must not be '.'.
+ *
+ * Note: conn_new() sets
+ * conn->cwd_fsp->fh->fd = -1
+ * and vfs_ChDir() leaves with
+ * conn->cwd_fsp->fh->fd = AT_FDCWD
+ * on success!
+ */
+ if (fsp_get_pathref_fd(conn->cwd_fsp) != AT_FDCWD) {
+ /*
+ * This should never happen and
+ * we might change this to
+ * SMB_ASSERT() in future.
+ */
+ DBG_ERR("Called with '.' as first operation!\n");
+ log_stack_trace();
+ errno = EINVAL;
+ return -1;
+ }
+ return 0;
+ }
+
+ if (smb_fname->base_name[0] == '/' &&
+ strcsequal(LastDir,smb_fname->base_name))
+ {
+ /*
+ * conn->cwd_fsp->fsp_name and the kernel
+ * are already correct, but conn->cwd_fsp->fh->fd
+ * might still be -1 as initialized in conn_new().
+ *
+ * This can happen when a client made a 2nd
+ * tree connect to a share with the same underlying
+ * path (may or may not the same share).
+ */
+ fsp_set_fd(conn->cwd_fsp, AT_FDCWD);
+ return 0;
+ }
+
+ DEBUG(4,("vfs_ChDir to %s\n", smb_fname->base_name));
+
+ ret = SMB_VFS_CHDIR(conn, smb_fname);
+ if (ret != 0) {
+ return -1;
+ }
+
+ /*
+ * Always replace conn->cwd_fsp. We
+ * don't know if it's been modified by
+ * VFS modules in the stack.
+ */
+ fsp_set_fd(conn->cwd_fsp, AT_FDCWD);
+
+ /* conn cache. */
+ cwd = vfs_GetWd(conn, conn);
+ if (cwd == NULL) {
+ /*
+ * vfs_GetWd() failed.
+ * We must be able to read cwd.
+ * Return to original directory
+ * and return -1.
+ */
+ int saved_errno = errno;
+
+ if (conn->cwd_fsp->fsp_name == NULL) {
+ /*
+ * Failed on the very first chdir()+getwd()
+ * for this connection. We can't
+ * continue.
+ */
+ smb_panic("conn->cwd getwd failed\n");
+ /* NOTREACHED */
+ return -1;
+ }
+
+ /* Return to the previous $cwd. */
+ ret = SMB_VFS_CHDIR(conn, conn->cwd_fsp->fsp_name);
+ if (ret != 0) {
+ smb_panic("conn->cwd getwd failed\n");
+ /* NOTREACHED */
+ return -1;
+ }
+ errno = saved_errno;
+ /* And fail the chdir(). */
+ return -1;
+ }
+
+ /* vfs_GetWd() succeeded. */
+ /* Replace global cache. */
+ SAFE_FREE(LastDir);
+ LastDir = SMB_STRDUP(smb_fname->base_name);
+
+ /*
+ * (Indirect) Callers of vfs_ChDir() may still hold references to the
+ * old conn->cwd_fsp->fsp_name. Move it to talloc_tos(), that way
+ * callers can use it for the lifetime of the SMB request.
+ */
+ talloc_move(talloc_tos(), &conn->cwd_fsp->fsp_name);
+
+ conn->cwd_fsp->fsp_name = talloc_move(conn->cwd_fsp, &cwd);
+
+ DBG_INFO("vfs_ChDir got %s\n", fsp_str_dbg(conn->cwd_fsp));
+
+ return ret;
+}
+
+/*******************************************************************
+ Return the absolute current directory path - given a UNIX pathname.
+ Note that this path is returned in DOS format, not UNIX
+ format. Note this can be called with conn == NULL.
+********************************************************************/
+
+struct smb_filename *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
+{
+ struct smb_filename *current_dir_fname = NULL;
+ struct file_id key;
+ struct smb_filename *smb_fname_dot = NULL;
+ struct smb_filename *smb_fname_full = NULL;
+ struct smb_filename *result = NULL;
+
+ if (!lp_getwd_cache()) {
+ goto nocache;
+ }
+
+ smb_fname_dot = synthetic_smb_fname(ctx,
+ ".",
+ NULL,
+ NULL,
+ 0,
+ 0);
+ if (smb_fname_dot == NULL) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
+ /*
+ * Known to fail for root: the directory may be NFS-mounted
+ * and exported with root_squash (so has no root access).
+ */
+ DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
+ "(NFS problem ?)\n", strerror(errno) ));
+ goto nocache;
+ }
+
+ key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
+
+ smb_fname_full = (struct smb_filename *)memcache_lookup_talloc(
+ smbd_memcache(),
+ GETWD_CACHE,
+ data_blob_const(&key, sizeof(key)));
+
+ if (smb_fname_full == NULL) {
+ goto nocache;
+ }
+
+ if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
+ (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
+ (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
+ (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
+ /*
+ * Ok, we're done
+ * Note: smb_fname_full is owned by smbd_memcache()
+ * so we must make a copy to return.
+ */
+ result = cp_smb_filename(ctx, smb_fname_full);
+ if (result == NULL) {
+ errno = ENOMEM;
+ }
+ goto out;
+ }
+
+ nocache:
+
+ /*
+ * We don't have the information to hand so rely on traditional
+ * methods. The very slow getcwd, which spawns a process on some
+ * systems, or the not quite so bad getwd.
+ */
+
+ current_dir_fname = SMB_VFS_GETWD(conn, ctx);
+ if (current_dir_fname == NULL) {
+ DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
+ strerror(errno)));
+ goto out;
+ }
+
+ if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
+ key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
+
+ /*
+ * smbd_memcache() will own current_dir_fname after the
+ * memcache_add_talloc call, so we must make
+ * a copy on ctx to return.
+ */
+ result = cp_smb_filename(ctx, current_dir_fname);
+ if (result == NULL) {
+ errno = ENOMEM;
+ }
+
+ /*
+ * Ensure the memory going into the cache
+ * doesn't have a destructor so it can be
+ * cleanly freed.
+ */
+ talloc_set_destructor(current_dir_fname, NULL);
+
+ memcache_add_talloc(smbd_memcache(),
+ GETWD_CACHE,
+ data_blob_const(&key, sizeof(key)),
+ &current_dir_fname);
+ /* current_dir_fname is now == NULL here. */
+ } else {
+ /* current_dir_fname is already allocated on ctx. */
+ result = current_dir_fname;
+ }
+
+ out:
+ TALLOC_FREE(smb_fname_dot);
+ /*
+ * Don't free current_dir_fname here. It's either been moved
+ * to the memcache or is being returned in result.
+ */
+ return result;
+}
+
+/*
+ * Ensure LSTAT is called for POSIX paths.
+ */
+int vfs_stat(struct connection_struct *conn,
+ struct smb_filename *smb_fname)
+{
+ if (smb_fname->flags & SMB_FILENAME_POSIX_PATH) {
+ return SMB_VFS_LSTAT(conn, smb_fname);
+ }
+ return SMB_VFS_STAT(conn, smb_fname);
+}
+
+/**
+ * XXX: This is temporary and there should be no callers of this once
+ * smb_filename is plumbed through all path based operations.
+ *
+ * Called when we know stream name parsing has already been done.
+ */
+int vfs_stat_smb_basename(struct connection_struct *conn,
+ const struct smb_filename *smb_fname_in,
+ SMB_STRUCT_STAT *psbuf)
+{
+ struct smb_filename smb_fname = {
+ .base_name = discard_const_p(char, smb_fname_in->base_name),
+ .flags = smb_fname_in->flags,
+ .twrp = smb_fname_in->twrp,
+ };
+ int ret;
+
+ ret = vfs_stat(conn, &smb_fname);
+ if (ret != -1) {
+ *psbuf = smb_fname.st;
+ }
+ return ret;
+}
+
+/**
+ * Ensure LSTAT is called for POSIX paths.
+ */
+
+NTSTATUS vfs_stat_fsp(files_struct *fsp)
+{
+ int ret;
+ struct stat_ex saved_stat = fsp->fsp_name->st;
+
+ if (fsp->fake_file_handle != NULL) {
+ return NT_STATUS_OK;
+ }
+
+ if (fsp_get_pathref_fd(fsp) == -1) {
+ if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
+ ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
+ } else {
+ ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
+ }
+ } else {
+ ret = SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st);
+ }
+ if (ret == -1) {
+ return map_nt_error_from_unix(errno);
+ }
+ update_stat_ex_from_saved_stat(&fsp->fsp_name->st, &saved_stat);
+ fsp->fsp_flags.is_directory = S_ISDIR(fsp->fsp_name->st.st_ex_mode);
+ return NT_STATUS_OK;
+}
+
+void init_smb_file_time(struct smb_file_time *ft)
+{
+ *ft = (struct smb_file_time) {
+ .atime = make_omit_timespec(),
+ .ctime = make_omit_timespec(),
+ .mtime = make_omit_timespec(),
+ .create_time = make_omit_timespec()
+ };
+}
+
+/**
+ * Initialize num_streams and streams, then call VFS op streaminfo
+ */
+
+NTSTATUS vfs_fstreaminfo(struct files_struct *fsp,
+ TALLOC_CTX *mem_ctx,
+ unsigned int *num_streams,
+ struct stream_struct **streams)
+{
+ *num_streams = 0;
+ *streams = NULL;
+
+ if (fsp == NULL) {
+ /*
+ * Callers may pass fsp == NULL when passing smb_fname->fsp of a
+ * symlink. This is ok, handle it here, by just return no
+ * streams on a symlink.
+ */
+ return NT_STATUS_OK;
+ }
+
+ if (fsp_get_pathref_fd(fsp) == -1) {
+ /*
+ * No streams on non-real files/directories.
+ */
+ return NT_STATUS_OK;
+ }
+
+ return SMB_VFS_FSTREAMINFO(fsp,
+ mem_ctx,
+ num_streams,
+ streams);
+}
+
+int vfs_fake_fd(void)
+{
+ int pipe_fds[2];
+ int ret;
+
+ /*
+ * Return a valid fd, but ensure any attempt to use
+ * it returns an error (EPIPE).
+ */
+ ret = pipe(pipe_fds);
+ if (ret != 0) {
+ return -1;
+ }
+
+ close(pipe_fds[1]);
+ return pipe_fds[0];
+}
+
+/*
+ * This is just a helper to make
+ * users of vfs_fake_fd() more symmetric
+ */
+int vfs_fake_fd_close(int fd)
+{
+ return close(fd);
+}
+
+/*
+ generate a file_id from a stat structure
+ */
+struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
+{
+ return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
+}
+
+NTSTATUS vfs_at_fspcwd(TALLOC_CTX *mem_ctx,
+ struct connection_struct *conn,
+ struct files_struct **_fsp)
+{
+ struct files_struct *fsp = NULL;
+
+ fsp = talloc_zero(mem_ctx, struct files_struct);
+ if (fsp == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ fsp->fsp_name = synthetic_smb_fname(fsp, ".", NULL, NULL, 0, 0);
+ if (fsp->fsp_name == NULL) {
+ TALLOC_FREE(fsp);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ fsp->fh = fd_handle_create(fsp);
+ if (fsp->fh == NULL) {
+ TALLOC_FREE(fsp);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ fsp_set_fd(fsp, AT_FDCWD);
+ fsp->fnum = FNUM_FIELD_INVALID;
+ fsp->conn = conn;
+
+ *_fsp = fsp;
+ return NT_STATUS_OK;
+}
+
+static struct smb_vfs_deny_state *smb_vfs_deny_global;
+
+void smb_vfs_assert_allowed(void)
+{
+ if (unlikely(smb_vfs_deny_global != NULL)) {
+ DBG_ERR("Called with VFS denied by %s\n",
+ smb_vfs_deny_global->location);
+ smb_panic("Called with VFS denied!");
+ }
+}
+
+void _smb_vfs_deny_push(struct smb_vfs_deny_state *state, const char *location)
+{
+ SMB_ASSERT(smb_vfs_deny_global != state);
+
+ *state = (struct smb_vfs_deny_state) {
+ .parent = smb_vfs_deny_global,
+ .location = location,
+ };
+
+ smb_vfs_deny_global = state;
+}
+
+void _smb_vfs_deny_pop(struct smb_vfs_deny_state *state, const char *location)
+{
+ SMB_ASSERT(smb_vfs_deny_global == state);
+
+ smb_vfs_deny_global = state->parent;
+
+ *state = (struct smb_vfs_deny_state) { .parent = NULL, };
+}
+
+#define VFS_FIND(__fn__) do { \
+ if (unlikely(smb_vfs_deny_global != NULL)) { \
+ DBG_ERR("Called with VFS denied by %s\n", \
+ smb_vfs_deny_global->location); \
+ smb_panic("Called with VFS denied!"); \
+ } \
+ while (handle->fns->__fn__##_fn==NULL) { \
+ handle = handle->next; \
+ } \
+} while(0)
+
+int smb_vfs_call_connect(struct vfs_handle_struct *handle,
+ const char *service, const char *user)
+{
+ VFS_FIND(connect);
+ return handle->fns->connect_fn(handle, service, user);
+}
+
+void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
+{
+ VFS_FIND(disconnect);
+ handle->fns->disconnect_fn(handle);
+}
+
+uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ uint64_t *bsize,
+ uint64_t *dfree,
+ uint64_t *dsize)
+{
+ VFS_FIND(disk_free);
+ return handle->fns->disk_free_fn(handle, smb_fname,
+ bsize, dfree, dsize);
+}
+
+int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ enum SMB_QUOTA_TYPE qtype,
+ unid_t id,
+ SMB_DISK_QUOTA *qt)
+{
+ VFS_FIND(get_quota);
+ return handle->fns->get_quota_fn(handle, smb_fname, qtype, id, qt);
+}
+
+int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
+ enum SMB_QUOTA_TYPE qtype, unid_t id,
+ SMB_DISK_QUOTA *qt)
+{
+ VFS_FIND(set_quota);
+ return handle->fns->set_quota_fn(handle, qtype, id, qt);
+}
+
+int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ struct shadow_copy_data *shadow_copy_data,
+ bool labels)
+{
+ VFS_FIND(get_shadow_copy_data);
+ return handle->fns->get_shadow_copy_data_fn(handle, fsp,
+ shadow_copy_data,
+ labels);
+}
+int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ struct vfs_statvfs_struct *statbuf)
+{
+ VFS_FIND(statvfs);
+ return handle->fns->statvfs_fn(handle, smb_fname, statbuf);
+}
+
+uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
+ enum timestamp_set_resolution *p_ts_res)
+{
+ VFS_FIND(fs_capabilities);
+ return handle->fns->fs_capabilities_fn(handle, p_ts_res);
+}
+
+NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
+ struct dfs_GetDFSReferral *r)
+{
+ VFS_FIND(get_dfs_referrals);
+ return handle->fns->get_dfs_referrals_fn(handle, r);
+}
+
+NTSTATUS smb_vfs_call_create_dfs_pathat(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ const struct referral *reflist,
+ size_t referral_count)
+{
+ VFS_FIND(create_dfs_pathat);
+ return handle->fns->create_dfs_pathat_fn(handle,
+ dirfsp,
+ smb_fname,
+ reflist,
+ referral_count);
+}
+
+NTSTATUS smb_vfs_call_read_dfs_pathat(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct files_struct *dirfsp,
+ struct smb_filename *smb_fname,
+ struct referral **ppreflist,
+ size_t *preferral_count)
+{
+ VFS_FIND(read_dfs_pathat);
+ return handle->fns->read_dfs_pathat_fn(handle,
+ mem_ctx,
+ dirfsp,
+ smb_fname,
+ ppreflist,
+ preferral_count);
+}
+
+DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const char *mask,
+ uint32_t attributes)
+{
+ VFS_FIND(fdopendir);
+ return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
+}
+
+struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ DIR *dirp)
+{
+ VFS_FIND(readdir);
+ return handle->fns->readdir_fn(handle, dirfsp, dirp);
+}
+
+void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
+ DIR *dirp)
+{
+ VFS_FIND(rewind_dir);
+ handle->fns->rewind_dir_fn(handle, dirp);
+}
+
+int smb_vfs_call_mkdirat(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ mode_t mode)
+{
+ VFS_FIND(mkdirat);
+ return handle->fns->mkdirat_fn(handle,
+ dirfsp,
+ smb_fname,
+ mode);
+}
+
+int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
+ DIR *dir)
+{
+ VFS_FIND(closedir);
+ return handle->fns->closedir_fn(handle, dir);
+}
+
+int smb_vfs_call_openat(struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ struct files_struct *fsp,
+ const struct vfs_open_how *how)
+{
+ VFS_FIND(openat);
+ return handle->fns->openat_fn(handle,
+ dirfsp,
+ smb_fname,
+ fsp,
+ how);
+}
+
+NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
+ struct smb_request *req,
+ struct files_struct *dirfsp,
+ struct smb_filename *smb_fname,
+ uint32_t access_mask,
+ uint32_t share_access,
+ uint32_t create_disposition,
+ uint32_t create_options,
+ uint32_t file_attributes,
+ uint32_t oplock_request,
+ const struct smb2_lease *lease,
+ uint64_t allocation_size,
+ uint32_t private_flags,
+ struct security_descriptor *sd,
+ struct ea_list *ea_list,
+ files_struct **result,
+ int *pinfo,
+ const struct smb2_create_blobs *in_context_blobs,
+ struct smb2_create_blobs *out_context_blobs)
+{
+ VFS_FIND(create_file);
+ return handle->fns->create_file_fn(
+ handle, req, dirfsp, smb_fname,
+ access_mask, share_access, create_disposition, create_options,
+ file_attributes, oplock_request, lease, allocation_size,
+ private_flags, sd, ea_list,
+ result, pinfo, in_context_blobs, out_context_blobs);
+}
+
+int smb_vfs_call_close(struct vfs_handle_struct *handle,
+ struct files_struct *fsp)
+{
+ VFS_FIND(close);
+ return handle->fns->close_fn(handle, fsp);
+}
+
+ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, void *data, size_t n,
+ off_t offset)
+{
+ VFS_FIND(pread);
+ return handle->fns->pread_fn(handle, fsp, data, n, offset);
+}
+
+struct smb_vfs_call_pread_state {
+ ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
+ ssize_t retval;
+ struct vfs_aio_state vfs_aio_state;
+};
+
+static void smb_vfs_call_pread_done(struct tevent_req *subreq);
+
+struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct files_struct *fsp,
+ void *data,
+ size_t n, off_t offset)
+{
+ struct tevent_req *req, *subreq;
+ struct smb_vfs_call_pread_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb_vfs_call_pread_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ VFS_FIND(pread_send);
+ state->recv_fn = handle->fns->pread_recv_fn;
+
+ subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
+ offset);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
+ return req;
+}
+
+static void smb_vfs_call_pread_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smb_vfs_call_pread_state *state = tevent_req_data(
+ req, struct smb_vfs_call_pread_state);
+
+ state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
+ TALLOC_FREE(subreq);
+ if (state->retval == -1) {
+ tevent_req_error(req, state->vfs_aio_state.error);
+ return;
+ }
+ tevent_req_done(req);
+}
+
+ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req,
+ struct vfs_aio_state *vfs_aio_state)
+{
+ struct smb_vfs_call_pread_state *state = tevent_req_data(
+ req, struct smb_vfs_call_pread_state);
+ ssize_t retval;
+
+ if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
+ tevent_req_received(req);
+ return -1;
+ }
+ *vfs_aio_state = state->vfs_aio_state;
+ retval = state->retval;
+ tevent_req_received(req);
+ return retval;
+}
+
+ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, const void *data,
+ size_t n, off_t offset)
+{
+ VFS_FIND(pwrite);
+ return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
+}
+
+struct smb_vfs_call_pwrite_state {
+ ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
+ ssize_t retval;
+ struct vfs_aio_state vfs_aio_state;
+};
+
+static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
+
+struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct files_struct *fsp,
+ const void *data,
+ size_t n, off_t offset)
+{
+ struct tevent_req *req, *subreq;
+ struct smb_vfs_call_pwrite_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb_vfs_call_pwrite_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ VFS_FIND(pwrite_send);
+ state->recv_fn = handle->fns->pwrite_recv_fn;
+
+ subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
+ offset);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
+ return req;
+}
+
+static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smb_vfs_call_pwrite_state *state = tevent_req_data(
+ req, struct smb_vfs_call_pwrite_state);
+
+ state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
+ TALLOC_FREE(subreq);
+ if (state->retval == -1) {
+ tevent_req_error(req, state->vfs_aio_state.error);
+ return;
+ }
+ tevent_req_done(req);
+}
+
+ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req,
+ struct vfs_aio_state *vfs_aio_state)
+{
+ struct smb_vfs_call_pwrite_state *state = tevent_req_data(
+ req, struct smb_vfs_call_pwrite_state);
+ ssize_t retval;
+
+ if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
+ tevent_req_received(req);
+ return -1;
+ }
+ *vfs_aio_state = state->vfs_aio_state;
+ retval = state->retval;
+ tevent_req_received(req);
+ return retval;
+}
+
+off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, off_t offset,
+ int whence)
+{
+ VFS_FIND(lseek);
+ return handle->fns->lseek_fn(handle, fsp, offset, whence);
+}
+
+ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
+ files_struct *fromfsp, const DATA_BLOB *header,
+ off_t offset, size_t count)
+{
+ VFS_FIND(sendfile);
+ return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
+ count);
+}
+
+ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
+ files_struct *tofsp, off_t offset,
+ size_t count)
+{
+ VFS_FIND(recvfile);
+ return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
+}
+
+int smb_vfs_call_renameat(struct vfs_handle_struct *handle,
+ files_struct *srcfsp,
+ const struct smb_filename *smb_fname_src,
+ files_struct *dstfsp,
+ const struct smb_filename *smb_fname_dst)
+{
+ VFS_FIND(renameat);
+ return handle->fns->renameat_fn(handle,
+ srcfsp,
+ smb_fname_src,
+ dstfsp,
+ smb_fname_dst);
+}
+
+struct smb_vfs_call_fsync_state {
+ int (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
+ int retval;
+ struct vfs_aio_state vfs_aio_state;
+};
+
+static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
+
+struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct files_struct *fsp)
+{
+ struct tevent_req *req, *subreq;
+ struct smb_vfs_call_fsync_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb_vfs_call_fsync_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ VFS_FIND(fsync_send);
+ state->recv_fn = handle->fns->fsync_recv_fn;
+
+ subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
+ return req;
+}
+
+static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smb_vfs_call_fsync_state *state = tevent_req_data(
+ req, struct smb_vfs_call_fsync_state);
+
+ state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
+ TALLOC_FREE(subreq);
+ if (state->retval == -1) {
+ tevent_req_error(req, state->vfs_aio_state.error);
+ return;
+ }
+ tevent_req_done(req);
+}
+
+int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state)
+{
+ struct smb_vfs_call_fsync_state *state = tevent_req_data(
+ req, struct smb_vfs_call_fsync_state);
+ ssize_t retval;
+
+ if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
+ tevent_req_received(req);
+ return -1;
+ }
+ *vfs_aio_state = state->vfs_aio_state;
+ retval = state->retval;
+ tevent_req_received(req);
+ return retval;
+}
+
+/*
+ * Synchronous version of fsync, built from backend
+ * async VFS primitives. Uses a temporary sub-event
+ * context (NOT NESTED).
+ */
+
+int smb_vfs_fsync_sync(files_struct *fsp)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct tevent_req *req = NULL;
+ struct vfs_aio_state aio_state = { 0 };
+ int ret = -1;
+ bool ok;
+ struct tevent_context *ev = samba_tevent_context_init(frame);
+
+ if (ev == NULL) {
+ goto out;
+ }
+
+ req = SMB_VFS_FSYNC_SEND(talloc_tos(), ev, fsp);
+ if (req == NULL) {
+ goto out;
+ }
+
+ ok = tevent_req_poll(req, ev);
+ if (!ok) {
+ goto out;
+ }
+
+ ret = SMB_VFS_FSYNC_RECV(req, &aio_state);
+
+ out:
+
+ TALLOC_FREE(frame);
+ if (aio_state.error != 0) {
+ errno = aio_state.error;
+ }
+ return ret;
+}
+
+int smb_vfs_call_stat(struct vfs_handle_struct *handle,
+ struct smb_filename *smb_fname)
+{
+ VFS_FIND(stat);
+ return handle->fns->stat_fn(handle, smb_fname);
+}
+
+int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
+{
+ VFS_FIND(fstat);
+ return handle->fns->fstat_fn(handle, fsp, sbuf);
+}
+
+int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
+ struct smb_filename *smb_filename)
+{
+ VFS_FIND(lstat);
+ return handle->fns->lstat_fn(handle, smb_filename);
+}
+
+int smb_vfs_call_fstatat(
+ struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ SMB_STRUCT_STAT *sbuf,
+ int flags)
+{
+ VFS_FIND(fstatat);
+ return handle->fns->fstatat_fn(handle, dirfsp, smb_fname, sbuf, flags);
+}
+
+uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const SMB_STRUCT_STAT *sbuf)
+{
+ VFS_FIND(get_alloc_size);
+ return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
+}
+
+int smb_vfs_call_unlinkat(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ int flags)
+{
+ VFS_FIND(unlinkat);
+ return handle->fns->unlinkat_fn(handle,
+ dirfsp,
+ smb_fname,
+ flags);
+}
+
+int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, mode_t mode)
+{
+ VFS_FIND(fchmod);
+ return handle->fns->fchmod_fn(handle, fsp, mode);
+}
+
+int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, uid_t uid, gid_t gid)
+{
+ VFS_FIND(fchown);
+ return handle->fns->fchown_fn(handle, fsp, uid, gid);
+}
+
+int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ uid_t uid,
+ gid_t gid)
+{
+ VFS_FIND(lchown);
+ return handle->fns->lchown_fn(handle, smb_fname, uid, gid);
+}
+
+int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname)
+{
+ VFS_FIND(chdir);
+ return handle->fns->chdir_fn(handle, smb_fname);
+}
+
+struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
+ TALLOC_CTX *ctx)
+{
+ VFS_FIND(getwd);
+ return handle->fns->getwd_fn(handle, ctx);
+}
+
+int smb_vfs_call_fntimes(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ struct smb_file_time *ft)
+{
+ VFS_FIND(fntimes);
+ return handle->fns->fntimes_fn(handle, fsp, ft);
+}
+
+int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, off_t offset)
+{
+ VFS_FIND(ftruncate);
+ return handle->fns->ftruncate_fn(handle, fsp, offset);
+}
+
+int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t mode,
+ off_t offset,
+ off_t len)
+{
+ VFS_FIND(fallocate);
+ return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
+}
+
+int smb_vfs_call_filesystem_sharemode(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t share_mode,
+ uint32_t access_mask)
+{
+ VFS_FIND(filesystem_sharemode);
+ return handle->fns->filesystem_sharemode_fn(handle,
+ fsp,
+ share_mode,
+ access_mask);
+}
+
+int smb_vfs_call_fcntl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, int cmd, ...)
+{
+ int result;
+ va_list cmd_arg;
+
+ VFS_FIND(fcntl);
+
+ va_start(cmd_arg, cmd);
+ result = handle->fns->fcntl_fn(handle, fsp, cmd, cmd_arg);
+ va_end(cmd_arg);
+
+ return result;
+}
+
+int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, int leasetype)
+{
+ VFS_FIND(linux_setlease);
+ return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
+}
+
+int smb_vfs_call_symlinkat(struct vfs_handle_struct *handle,
+ const struct smb_filename *link_target,
+ struct files_struct *dirfsp,
+ const struct smb_filename *new_smb_fname)
+{
+ VFS_FIND(symlinkat);
+ return handle->fns->symlinkat_fn(handle,
+ link_target,
+ dirfsp,
+ new_smb_fname);
+}
+
+int smb_vfs_call_readlinkat(struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ char *buf,
+ size_t bufsiz)
+{
+ VFS_FIND(readlinkat);
+ return handle->fns->readlinkat_fn(handle,
+ dirfsp,
+ smb_fname,
+ buf,
+ bufsiz);
+}
+
+int smb_vfs_call_linkat(struct vfs_handle_struct *handle,
+ struct files_struct *srcfsp,
+ const struct smb_filename *old_smb_fname,
+ struct files_struct *dstfsp,
+ const struct smb_filename *new_smb_fname,
+ int flags)
+{
+ VFS_FIND(linkat);
+ return handle->fns->linkat_fn(handle,
+ srcfsp,
+ old_smb_fname,
+ dstfsp,
+ new_smb_fname,
+ flags);
+}
+
+int smb_vfs_call_mknodat(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ mode_t mode,
+ SMB_DEV_T dev)
+{
+ VFS_FIND(mknodat);
+ return handle->fns->mknodat_fn(handle,
+ dirfsp,
+ smb_fname,
+ mode,
+ dev);
+}
+
+struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
+ TALLOC_CTX *ctx,
+ const struct smb_filename *smb_fname)
+{
+ VFS_FIND(realpath);
+ return handle->fns->realpath_fn(handle, ctx, smb_fname);
+}
+
+int smb_vfs_call_fchflags(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ unsigned int flags)
+{
+ VFS_FIND(fchflags);
+ return handle->fns->fchflags_fn(handle, fsp, flags);
+}
+
+struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
+ const SMB_STRUCT_STAT *sbuf)
+{
+ VFS_FIND(file_id_create);
+ return handle->fns->file_id_create_fn(handle, sbuf);
+}
+
+uint64_t smb_vfs_call_fs_file_id(struct vfs_handle_struct *handle,
+ const SMB_STRUCT_STAT *sbuf)
+{
+ VFS_FIND(fs_file_id);
+ return handle->fns->fs_file_id_fn(handle, sbuf);
+}
+
+NTSTATUS smb_vfs_call_fstreaminfo(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ TALLOC_CTX *mem_ctx,
+ unsigned int *num_streams,
+ struct stream_struct **streams)
+{
+ VFS_FIND(fstreaminfo);
+ return handle->fns->fstreaminfo_fn(handle, fsp, mem_ctx,
+ num_streams, streams);
+}
+
+NTSTATUS smb_vfs_call_get_real_filename_at(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const char *name,
+ TALLOC_CTX *mem_ctx,
+ char **found_name)
+{
+ VFS_FIND(get_real_filename_at);
+ return handle->fns->get_real_filename_at_fn(
+ handle, dirfsp, name, mem_ctx, found_name);
+}
+
+const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname)
+{
+ VFS_FIND(connectpath);
+ return handle->fns->connectpath_fn(handle, dirfsp, smb_fname);
+}
+
+bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ struct lock_struct *plock)
+{
+ VFS_FIND(strict_lock_check);
+ return handle->fns->strict_lock_check_fn(handle, fsp, plock);
+}
+
+NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
+ const char *name,
+ enum vfs_translate_direction direction,
+ TALLOC_CTX *mem_ctx,
+ char **mapped_name)
+{
+ VFS_FIND(translate_name);
+ return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
+ mapped_name);
+}
+
+NTSTATUS smb_vfs_call_parent_pathname(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ const struct smb_filename *smb_fname_in,
+ struct smb_filename **parent_dir_out,
+ struct smb_filename **atname_out)
+{
+ VFS_FIND(parent_pathname);
+ return handle->fns->parent_pathname_fn(handle,
+ mem_ctx,
+ smb_fname_in,
+ parent_dir_out,
+ atname_out);
+}
+
+NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ TALLOC_CTX *ctx,
+ uint32_t function,
+ uint16_t req_flags,
+ const uint8_t *in_data,
+ uint32_t in_len,
+ uint8_t **out_data,
+ uint32_t max_out_len,
+ uint32_t *out_len)
+{
+ VFS_FIND(fsctl);
+ return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
+ in_data, in_len, out_data, max_out_len,
+ out_len);
+}
+
+NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t *dosmode)
+{
+ VFS_FIND(fget_dos_attributes);
+ return handle->fns->fget_dos_attributes_fn(handle, fsp, dosmode);
+}
+
+NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t dosmode)
+{
+ VFS_FIND(fset_dos_attributes);
+ return handle->fns->fset_dos_attributes_fn(handle, fsp, dosmode);
+}
+
+struct tevent_req *smb_vfs_call_offload_read_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t fsctl,
+ uint32_t ttl,
+ off_t offset,
+ size_t to_copy)
+{
+ VFS_FIND(offload_read_send);
+ return handle->fns->offload_read_send_fn(mem_ctx, ev, handle,
+ fsp, fsctl,
+ ttl, offset, to_copy);
+}
+
+NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
+ struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ uint32_t *flags,
+ uint64_t *xferlen,
+ DATA_BLOB *token_blob)
+{
+ VFS_FIND(offload_read_recv);
+ return handle->fns->offload_read_recv_fn(req, handle, mem_ctx, flags, xferlen, token_blob);
+}
+
+struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ uint32_t fsctl,
+ DATA_BLOB *token,
+ off_t transfer_offset,
+ struct files_struct *dest_fsp,
+ off_t dest_off,
+ off_t num)
+{
+ VFS_FIND(offload_write_send);
+ return handle->fns->offload_write_send_fn(handle, mem_ctx, ev, fsctl,
+ token, transfer_offset,
+ dest_fsp, dest_off, num);
+}
+
+NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
+ struct tevent_req *req,
+ off_t *copied)
+{
+ VFS_FIND(offload_write_recv);
+ return handle->fns->offload_write_recv_fn(handle, req, copied);
+}
+
+struct smb_vfs_call_get_dos_attributes_state {
+ files_struct *dir_fsp;
+ NTSTATUS (*recv_fn)(struct tevent_req *req,
+ struct vfs_aio_state *aio_state,
+ uint32_t *dosmode);
+ struct vfs_aio_state aio_state;
+ uint32_t dos_attributes;
+};
+
+static void smb_vfs_call_get_dos_attributes_done(struct tevent_req *subreq);
+
+struct tevent_req *smb_vfs_call_get_dos_attributes_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct vfs_handle_struct *handle,
+ files_struct *dir_fsp,
+ struct smb_filename *smb_fname)
+{
+ struct tevent_req *req = NULL;
+ struct smb_vfs_call_get_dos_attributes_state *state = NULL;
+ struct tevent_req *subreq = NULL;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb_vfs_call_get_dos_attributes_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ VFS_FIND(get_dos_attributes_send);
+
+ *state = (struct smb_vfs_call_get_dos_attributes_state) {
+ .dir_fsp = dir_fsp,
+ .recv_fn = handle->fns->get_dos_attributes_recv_fn,
+ };
+
+ subreq = handle->fns->get_dos_attributes_send_fn(mem_ctx,
+ ev,
+ handle,
+ dir_fsp,
+ smb_fname);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_defer_callback(req, ev);
+
+ tevent_req_set_callback(subreq,
+ smb_vfs_call_get_dos_attributes_done,
+ req);
+
+ return req;
+}
+
+static void smb_vfs_call_get_dos_attributes_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smb_vfs_call_get_dos_attributes_state *state =
+ tevent_req_data(req,
+ struct smb_vfs_call_get_dos_attributes_state);
+ NTSTATUS status;
+ bool ok;
+
+ /*
+ * Make sure we run as the user again
+ */
+ ok = change_to_user_and_service_by_fsp(state->dir_fsp);
+ SMB_ASSERT(ok);
+
+ status = state->recv_fn(subreq,
+ &state->aio_state,
+ &state->dos_attributes);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ tevent_req_done(req);
+}
+
+NTSTATUS smb_vfs_call_get_dos_attributes_recv(
+ struct tevent_req *req,
+ struct vfs_aio_state *aio_state,
+ uint32_t *dos_attributes)
+{
+ struct smb_vfs_call_get_dos_attributes_state *state =
+ tevent_req_data(req,
+ struct smb_vfs_call_get_dos_attributes_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ tevent_req_received(req);
+ return status;
+ }
+
+ *aio_state = state->aio_state;
+ *dos_attributes = state->dos_attributes;
+ tevent_req_received(req);
+ return NT_STATUS_OK;
+}
+
+NTSTATUS smb_vfs_call_fget_compression(vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct files_struct *fsp,
+ uint16_t *_compression_fmt)
+{
+ VFS_FIND(fget_compression);
+ return handle->fns->fget_compression_fn(handle, mem_ctx, fsp,
+ _compression_fmt);
+}
+
+NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct files_struct *fsp,
+ uint16_t compression_fmt)
+{
+ VFS_FIND(set_compression);
+ return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
+ compression_fmt);
+}
+
+NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ const char *service_path,
+ char **base_volume)
+{
+ VFS_FIND(snap_check_path);
+ return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
+ base_volume);
+}
+
+NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ const char *base_volume,
+ time_t *tstamp,
+ bool rw,
+ char **base_path,
+ char **snap_path)
+{
+ VFS_FIND(snap_create);
+ return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
+ rw, base_path, snap_path);
+}
+
+NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ char *base_path,
+ char *snap_path)
+{
+ VFS_FIND(snap_delete);
+ return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
+ snap_path);
+}
+
+NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t security_info,
+ TALLOC_CTX *mem_ctx,
+ struct security_descriptor **ppdesc)
+{
+ VFS_FIND(fget_nt_acl);
+ return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
+ mem_ctx, ppdesc);
+}
+
+NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t security_info_sent,
+ const struct security_descriptor *psd)
+{
+ VFS_FIND(fset_nt_acl);
+ return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
+ psd);
+}
+
+NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
+ struct smb_filename *file,
+ struct security_acl *sacl,
+ uint32_t access_requested,
+ uint32_t access_denied)
+{
+ VFS_FIND(audit_file);
+ return handle->fns->audit_file_fn(handle,
+ file,
+ sacl,
+ access_requested,
+ access_denied);
+}
+
+SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ SMB_ACL_TYPE_T type,
+ TALLOC_CTX *mem_ctx)
+{
+ VFS_FIND(sys_acl_get_fd);
+ return handle->fns->sys_acl_get_fd_fn(handle, fsp, type, mem_ctx);
+}
+
+int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ TALLOC_CTX *mem_ctx,
+ char **blob_description,
+ DATA_BLOB *blob)
+{
+ VFS_FIND(sys_acl_blob_get_fd);
+ return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
+}
+
+int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ SMB_ACL_TYPE_T type,
+ SMB_ACL_T theacl)
+{
+ VFS_FIND(sys_acl_set_fd);
+ return handle->fns->sys_acl_set_fd_fn(handle, fsp, type, theacl);
+}
+
+int smb_vfs_call_sys_acl_delete_def_fd(struct vfs_handle_struct *handle,
+ struct files_struct *fsp)
+{
+ VFS_FIND(sys_acl_delete_def_fd);
+ return handle->fns->sys_acl_delete_def_fd_fn(handle, fsp);
+}
+
+struct smb_vfs_call_getxattrat_state {
+ files_struct *dir_fsp;
+ ssize_t (*recv_fn)(struct tevent_req *req,
+ struct vfs_aio_state *aio_state,
+ TALLOC_CTX *mem_ctx,
+ uint8_t **xattr_value);
+ ssize_t retval;
+ uint8_t *xattr_value;
+ struct vfs_aio_state aio_state;
+};
+
+static void smb_vfs_call_getxattrat_done(struct tevent_req *subreq);
+
+struct tevent_req *smb_vfs_call_getxattrat_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct vfs_handle_struct *handle,
+ files_struct *dir_fsp,
+ const struct smb_filename *smb_fname,
+ const char *xattr_name,
+ size_t alloc_hint)
+{
+ struct tevent_req *req = NULL;
+ struct smb_vfs_call_getxattrat_state *state = NULL;
+ struct tevent_req *subreq = NULL;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb_vfs_call_getxattrat_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ VFS_FIND(getxattrat_send);
+
+ *state = (struct smb_vfs_call_getxattrat_state) {
+ .dir_fsp = dir_fsp,
+ .recv_fn = handle->fns->getxattrat_recv_fn,
+ };
+
+ subreq = handle->fns->getxattrat_send_fn(mem_ctx,
+ ev,
+ handle,
+ dir_fsp,
+ smb_fname,
+ xattr_name,
+ alloc_hint);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_defer_callback(req, ev);
+
+ tevent_req_set_callback(subreq, smb_vfs_call_getxattrat_done, req);
+ return req;
+}
+
+static void smb_vfs_call_getxattrat_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smb_vfs_call_getxattrat_state *state = tevent_req_data(
+ req, struct smb_vfs_call_getxattrat_state);
+ bool ok;
+
+ /*
+ * Make sure we run as the user again
+ */
+ ok = change_to_user_and_service_by_fsp(state->dir_fsp);
+ SMB_ASSERT(ok);
+
+ state->retval = state->recv_fn(subreq,
+ &state->aio_state,
+ state,
+ &state->xattr_value);
+ TALLOC_FREE(subreq);
+ if (state->retval == -1) {
+ tevent_req_error(req, state->aio_state.error);
+ return;
+ }
+
+ tevent_req_done(req);
+}
+
+ssize_t smb_vfs_call_getxattrat_recv(struct tevent_req *req,
+ struct vfs_aio_state *aio_state,
+ TALLOC_CTX *mem_ctx,
+ uint8_t **xattr_value)
+{
+ struct smb_vfs_call_getxattrat_state *state = tevent_req_data(
+ req, struct smb_vfs_call_getxattrat_state);
+ size_t xattr_size;
+
+ if (tevent_req_is_unix_error(req, &aio_state->error)) {
+ tevent_req_received(req);
+ return -1;
+ }
+
+ *aio_state = state->aio_state;
+ xattr_size = state->retval;
+ if (xattr_value != NULL) {
+ *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
+ }
+
+ tevent_req_received(req);
+ return xattr_size;
+}
+
+ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, const char *name,
+ void *value, size_t size)
+{
+ VFS_FIND(fgetxattr);
+ return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
+}
+
+ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, char *list,
+ size_t size)
+{
+ VFS_FIND(flistxattr);
+ return handle->fns->flistxattr_fn(handle, fsp, list, size);
+}
+
+int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, const char *name)
+{
+ VFS_FIND(fremovexattr);
+ return handle->fns->fremovexattr_fn(handle, fsp, name);
+}
+
+int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, const char *name,
+ const void *value, size_t size, int flags)
+{
+ VFS_FIND(fsetxattr);
+ return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
+}
+
+bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
+ struct files_struct *fsp)
+{
+ VFS_FIND(aio_force);
+ return handle->fns->aio_force_fn(handle, fsp);
+}
+
+NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *cookie)
+{
+ VFS_FIND(durable_cookie);
+ return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
+}
+
+NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const DATA_BLOB old_cookie,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *new_cookie)
+{
+ VFS_FIND(durable_disconnect);
+ return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
+ mem_ctx, new_cookie);
+}
+
+NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
+ struct smb_request *smb1req,
+ struct smbXsrv_open *op,
+ const DATA_BLOB old_cookie,
+ TALLOC_CTX *mem_ctx,
+ struct files_struct **fsp,
+ DATA_BLOB *new_cookie)
+{
+ VFS_FIND(durable_reconnect);
+ return handle->fns->durable_reconnect_fn(handle, smb1req, op,
+ old_cookie, mem_ctx, fsp,
+ new_cookie);
+}
+
+NTSTATUS smb_vfs_call_freaddir_attr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ TALLOC_CTX *mem_ctx,
+ struct readdir_attr_data **attr_data)
+{
+ VFS_FIND(freaddir_attr);
+ return handle->fns->freaddir_attr_fn(handle,
+ fsp,
+ mem_ctx,
+ attr_data);
+}
+
+bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, int op, off_t offset,
+ off_t count, int type)
+{
+ VFS_FIND(lock);
+ return handle->fns->lock_fn(handle, fsp, op, offset, count, type);
+}
+
+bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, off_t *poffset,
+ off_t *pcount, int *ptype, pid_t *ppid)
+{
+ VFS_FIND(getlock);
+ return handle->fns->getlock_fn(handle, fsp, poffset, pcount, ptype,
+ ppid);
+}
+
+NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
+ struct byte_range_lock *br_lck,
+ struct lock_struct *plock)
+{
+ VFS_FIND(brl_lock_windows);
+ return handle->fns->brl_lock_windows_fn(handle, br_lck, plock);
+}
+
+bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
+ struct byte_range_lock *br_lck,
+ const struct lock_struct *plock)
+{
+ VFS_FIND(brl_unlock_windows);
+ return handle->fns->brl_unlock_windows_fn(handle, br_lck, plock);
+}