Attachment 11134 Details for Bug 11317 – Patch for master

[patch] Patch for master

copyfile.patch (text/plain), 14.36 KB, created by Ralph Böhme on 2015-06-09 11:08:18 UTC

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Creator: Ralph Böhme

Created: 2015-06-09 11:08:18 UTC

Size: 14.36 KB

patch

obsolete

>From 19c1720fc7f0c4377fc76ce9ad0c70089f21fd1f Mon Sep 17 00:00:00 2001
>From: Ralph Boehme <slow@samba.org>
>Date: Mon, 27 Apr 2015 12:16:16 +0200
>Subject: [PATCH 1/2] s3:util: use pread/pwrite in transfer_file
>
>read/write aren't overloaded in the streams VFS modules, using
>pread/pwrite instead this makes it possible to use transfer_file() with
>named streams.
>
>Bug: https://bugzilla.samba.org/show_bug.cgi?id=11317
>
>Signed-off-by: Ralph Boehme <slow@samba.org>
>---
> source3/include/transfer_file.h  |  4 ++--
> source3/lib/util_transfer_file.c | 23 +++++++++++++----------
> source3/smbd/vfs.c               | 10 +++++-----
> 3 files changed, 20 insertions(+), 17 deletions(-)
>
>diff --git a/source3/include/transfer_file.h b/source3/include/transfer_file.h
>index 546104f..2f1bff4 100644
>--- a/source3/include/transfer_file.h
>+++ b/source3/include/transfer_file.h
>@@ -24,8 +24,8 @@
> ssize_t transfer_file_internal(void *in_file,
> 			       void *out_file,
> 			       size_t n,
>-			       ssize_t (*read_fn)(void *, void *, size_t),
>-			       ssize_t (*write_fn)(void *, const void *, size_t));
>+			       ssize_t (*pread_fn)(void *, void *, size_t, off_t),
>+			       ssize_t (*pwrite_fn)(void *, const void *, size_t, off_t));
> 
> off_t transfer_file(int infd, int outfd, off_t n);
> 
>diff --git a/source3/lib/util_transfer_file.c b/source3/lib/util_transfer_file.c
>index d415d7f..91f4f6f 100644
>--- a/source3/lib/util_transfer_file.c
>+++ b/source3/lib/util_transfer_file.c
>@@ -36,8 +36,8 @@
> ssize_t transfer_file_internal(void *in_file,
> 			       void *out_file,
> 			       size_t n,
>-			       ssize_t (*read_fn)(void *, void *, size_t),
>-			       ssize_t (*write_fn)(void *, const void *, size_t))
>+			       ssize_t (*pread_fn)(void *, void *, size_t, off_t),
>+			       ssize_t (*pwrite_fn)(void *, const void *, size_t, off_t))
> {
> 	char *buf;
> 	size_t total = 0;
>@@ -45,6 +45,7 @@ ssize_t transfer_file_internal(void *in_file,
> 	ssize_t write_ret;
> 	size_t num_to_read_thistime;
> 	size_t num_written = 0;
>+	off_t offset = 0;
> 
> 	if (n == 0) {
> 		return 0;
>@@ -57,7 +58,7 @@ ssize_t transfer_file_internal(void *in_file,
> 	do {
> 		num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
> 
>-		read_ret = (*read_fn)(in_file, buf, num_to_read_thistime);
>+		read_ret = (*pread_fn)(in_file, buf, num_to_read_thistime, offset);
> 		if (read_ret == -1) {
> 			DEBUG(0,("transfer_file_internal: read failure. "
> 				 "Error = %s\n", strerror(errno) ));
>@@ -71,8 +72,9 @@ ssize_t transfer_file_internal(void *in_file,
> 		num_written = 0;
> 
> 		while (num_written < read_ret) {
>-			write_ret = (*write_fn)(out_file, buf + num_written,
>-					        read_ret - num_written);
>+			write_ret = (*pwrite_fn)(out_file, buf + num_written,
>+					        read_ret - num_written,
>+						offset + num_written);
> 
> 			if (write_ret == -1) {
> 				DEBUG(0,("transfer_file_internal: "
>@@ -89,28 +91,29 @@ ssize_t transfer_file_internal(void *in_file,
> 		}
> 
> 		total += (size_t)read_ret;
>+		offset += (off_t)read_ret;
> 	} while (total < n);
> 
> 	SAFE_FREE(buf);
> 	return (ssize_t)total;
> }
> 
>-static ssize_t sys_read_fn(void *file, void *buf, size_t len)
>+static ssize_t sys_pread_fn(void *file, void *buf, size_t len, off_t offset)
> {
> 	int *fd = (int *)file;
> 
>-	return sys_read(*fd, buf, len);
>+	return sys_pread(*fd, buf, len, offset);
> }
> 
>-static ssize_t sys_write_fn(void *file, const void *buf, size_t len)
>+static ssize_t sys_pwrite_fn(void *file, const void *buf, size_t len, off_t offset)
> {
> 	int *fd = (int *)file;
> 
>-	return sys_write(*fd, buf, len);
>+	return sys_pwrite(*fd, buf, len, offset);
> }
> 
> off_t transfer_file(int infd, int outfd, off_t n)
> {
> 	return (off_t)transfer_file_internal(&infd, &outfd, (size_t)n,
>-						 sys_read_fn, sys_write_fn);
>+						 sys_pread_fn, sys_pwrite_fn);
> }
>diff --git a/source3/smbd/vfs.c b/source3/smbd/vfs.c
>index 4ab7723..b267387 100644
>--- a/source3/smbd/vfs.c
>+++ b/source3/smbd/vfs.c
>@@ -756,24 +756,24 @@ int vfs_fill_sparse(files_struct *fsp, off_t len)
>  Transfer some data (n bytes) between two file_struct's.
> ****************************************************************************/
> 
>-static ssize_t vfs_read_fn(void *file, void *buf, size_t len)
>+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_READ(fsp, buf, len);
>+	return SMB_VFS_PREAD(fsp, buf, len, offset);
> }
> 
>-static ssize_t vfs_write_fn(void *file, const void *buf, size_t len)
>+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_WRITE(fsp, buf, len);
>+	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_read_fn, vfs_write_fn);
>+				      vfs_pread_fn, vfs_pwrite_fn);
> }
> 
> /*******************************************************************
>-- 
>2.1.0
>
>
>From 6cfc2657e958a920582eacb7e31028f3d2118525 Mon Sep 17 00:00:00 2001
>From: Ralph Boehme <slow@samba.org>
>Date: Wed, 22 Apr 2015 22:29:16 +0200
>Subject: [PATCH 2/2] vfs:fruit: implement copyfile style copy_chunk
>
>Implement Apple's special copy_chunk ioctl that requests a copy of the
>whole file along with all attached metadata.
>
>These copy_chunk requests have a chunk count of 0 that we translate to a
>copy_chunk_send VFS call overloading the parameters src_off = dest_off =
>num = 0.
>
>Bug: https://bugzilla.samba.org/show_bug.cgi?id=11317
>
>Signed-off-by: Ralph Boehme <slow@samba.org>
>---
> docs-xml/manpages/vfs_fruit.8.xml    |  10 ++
> source3/modules/vfs_fruit.c          | 204 +++++++++++++++++++++++++++++++++++
> source3/smbd/smb2_ioctl_network_fs.c |  30 ++++++
> 3 files changed, 244 insertions(+)
>
>diff --git a/docs-xml/manpages/vfs_fruit.8.xml b/docs-xml/manpages/vfs_fruit.8.xml
>index e407b54..63cf925 100644
>--- a/docs-xml/manpages/vfs_fruit.8.xml
>+++ b/docs-xml/manpages/vfs_fruit.8.xml
>@@ -214,6 +214,16 @@
> 	    </listitem>
> 	  </varlistentry>
> 
>+	  <varlistentry>
>+	    <term>fruit:copyfile = yes | no</term>
>+	    <listitem>
>+	      <para>Whether to enable OS X specific copychunk ioctl
>+	      that requests a copy of a whole file along with all
>+	      attached metadata.</para>
>+	      <para>The default is <emphasis>no</emphasis>.</para>
>+	    </listitem>
>+	  </varlistentry>
>+
> 	</variablelist>
> </refsect1>
> 
>diff --git a/source3/modules/vfs_fruit.c b/source3/modules/vfs_fruit.c
>index 2547838..7e3afc5 100644
>--- a/source3/modules/vfs_fruit.c
>+++ b/source3/modules/vfs_fruit.c
>@@ -30,6 +30,7 @@
> #include "libcli/security/security.h"
> #include "../libcli/smb/smb2_create_ctx.h"
> #include "lib/sys_rw.h"
>+#include "lib/util/tevent_ntstatus.h"
> 
> /*
>  * Enhanced OS X and Netatalk compatibility
>@@ -124,6 +125,7 @@ struct fruit_config_data {
> 	enum fruit_locking locking;
> 	enum fruit_encoding encoding;
> 	bool use_aapl;
>+	bool use_copyfile;
> 	bool readdir_attr_enabled;
> 	bool unix_info_enabled;
> 	bool veto_appledouble;
>@@ -1348,6 +1350,11 @@ static int init_fruit_config(vfs_handle_struct *handle)
> 		config->unix_info_enabled = true;
> 	}
> 
>+	if (lp_parm_bool(-1, FRUIT_PARAM_TYPE_NAME,
>+			 "copyfile", false)) {
>+		config->use_copyfile = true;
>+	}
>+
> 	if (lp_parm_bool(SNUM(handle->conn),
> 			 "readdir_attr", "aapl_rsize", true)) {
> 		config->readdir_attr_rsize = true;
>@@ -1837,6 +1844,10 @@ static NTSTATUS check_aapl(vfs_handle_struct *handle,
> 			config->readdir_attr_enabled = true;
> 		}
> 
>+		if (config->use_copyfile) {
>+			server_caps |= SMB2_CRTCTX_AAPL_SUPPORTS_OSX_COPYFILE;
>+		}
>+
> 		/*
> 		 * The client doesn't set the flag, so we can't check
> 		 * for it and just set it unconditionally
>@@ -3462,6 +3473,197 @@ static NTSTATUS fruit_fset_nt_acl(vfs_handle_struct *handle,
> 	return NT_STATUS_OK;
> }
> 
>+struct fruit_cc_state {
>+	struct vfs_handle_struct *handle;
>+	off_t copied;
>+	struct files_struct *src_fsp;
>+	struct files_struct *dst_fsp;
>+};
>+
>+static void fruit_copy_chunk_done(struct tevent_req *subreq);
>+static struct tevent_req *fruit_copy_chunk_send(struct vfs_handle_struct *handle,
>+						TALLOC_CTX *mem_ctx,
>+						struct tevent_context *ev,
>+						struct files_struct *src_fsp,
>+						off_t src_off,
>+						struct files_struct *dest_fsp,
>+						off_t dest_off,
>+						off_t num)
>+{
>+	struct tevent_req *req, *subreq;
>+	struct fruit_cc_state *fruit_cc_state;
>+	NTSTATUS status;
>+	struct fruit_config_data *config;
>+	off_t to_copy = num;
>+
>+	DEBUG(10,("%s: soff: %zd, doff: %zd, len: %zd\n",
>+		  __func__, src_off, dest_off,  num));
>+
>+	SMB_VFS_HANDLE_GET_DATA(handle, config,
>+				struct fruit_config_data,
>+				return NULL);
>+
>+	req = tevent_req_create(mem_ctx, &fruit_cc_state, struct fruit_cc_state);
>+	if (req == NULL) {
>+		return NULL;
>+	}
>+	fruit_cc_state->handle = handle;
>+	fruit_cc_state->src_fsp = src_fsp;
>+	fruit_cc_state->dst_fsp = dest_fsp;
>+
>+	/*
>+	 * Check if this a OS X copyfile style copychunk request with
>+	 * a requested chunk count of 0 that was translated to a
>+	 * copy_chunk_send VFS call overloading the parameters src_off
>+	 * = dest_off = num = 0.
>+	 */
>+	if ((src_off == 0) && (dest_off == 0) && (num == 0)) {
>+
>+		if (!config->use_copyfile) {
>+			tevent_req_error(req, EIO);
>+			return tevent_req_post(req, ev);
>+		}
>+
>+		status = vfs_stat_fsp(src_fsp);
>+		if (tevent_req_nterror(req, status)) {
>+			return tevent_req_post(req, ev);
>+		}
>+
>+		to_copy = src_fsp->fsp_name->st.st_ex_size;
>+	}
>+
>+	subreq = SMB_VFS_NEXT_COPY_CHUNK_SEND(handle,
>+					      mem_ctx,
>+					      ev,
>+					      src_fsp,
>+					      src_off,
>+					      dest_fsp,
>+					      dest_off,
>+					      to_copy);
>+	if (tevent_req_nomem(subreq, req)) {
>+		return tevent_req_post(req, ev);
>+	}
>+
>+	tevent_req_set_callback(subreq, fruit_copy_chunk_done, req);
>+	return req;
>+}
>+
>+static void fruit_copy_chunk_done(struct tevent_req *subreq)
>+{
>+	struct tevent_req *req = tevent_req_callback_data(
>+		subreq, struct tevent_req);
>+	struct fruit_cc_state *state = tevent_req_data(
>+		req, struct fruit_cc_state);
>+	NTSTATUS status;
>+	unsigned int num_streams = 0;
>+	struct stream_struct *streams = NULL;
>+	int i;
>+	struct smb_filename *src_fname_tmp = NULL;
>+	struct smb_filename *dst_fname_tmp = NULL;
>+
>+	status = SMB_VFS_NEXT_COPY_CHUNK_RECV(state->handle,
>+					      subreq,
>+					      &state->copied);
>+	TALLOC_FREE(subreq);
>+	if (tevent_req_nterror(req, status)) {
>+		return;
>+	}
>+
>+	/*
>+	 * Now copy all reamining streams. We know the share supports
>+	 * streams, because we're in vfs_fruit. We don't do this async
>+	 * because streams are few and small.
>+	 */
>+	status = vfs_streaminfo(state->handle->conn, NULL,
>+				state->src_fsp->fsp_name->base_name,
>+				req, &num_streams, &streams);
>+	if (tevent_req_nterror(req, status)) {
>+		return;
>+	}
>+
>+	if (num_streams == 1) {
>+		/* There is always one stream, ::$DATA. */
>+		tevent_req_done(req);
>+		return;
>+	}
>+
>+	for (i = 0; i < num_streams; i++) {
>+		DEBUG(10, ("%s: stream: '%s'/%zd\n",
>+			  __func__, streams[i].name, streams[i].size));
>+
>+		src_fname_tmp = synthetic_smb_fname(
>+			req,
>+			state->src_fsp->fsp_name->base_name,
>+			streams[i].name,
>+			NULL);
>+		if (src_fname_tmp == NULL) {
>+			tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
>+			return;
>+		}
>+
>+		if (is_ntfs_default_stream_smb_fname(src_fname_tmp)) {
>+			TALLOC_FREE(src_fname_tmp);
>+			continue;
>+		}
>+
>+		dst_fname_tmp = synthetic_smb_fname(
>+			req,
>+			state->dst_fsp->fsp_name->base_name,
>+			streams[i].name,
>+			NULL);
>+		if (dst_fname_tmp == NULL) {
>+			tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
>+			return;
>+		}
>+
>+		status = copy_file(req,
>+				   state->handle->conn,
>+				   src_fname_tmp,
>+				   dst_fname_tmp,
>+				   OPENX_FILE_CREATE_IF_NOT_EXIST,
>+				   0, false);
>+		if (!NT_STATUS_IS_OK(status)) {
>+			DEBUG(1, ("%s: copy %s to %s failed: %s\n", __func__,
>+				  smb_fname_str_dbg(src_fname_tmp),
>+				  smb_fname_str_dbg(dst_fname_tmp),
>+				  nt_errstr(status)));
>+			tevent_req_nterror(req, status);
>+			return;
>+		}
>+
>+		TALLOC_FREE(src_fname_tmp);
>+		TALLOC_FREE(dst_fname_tmp);
>+	}
>+
>+	TALLOC_FREE(streams);
>+	TALLOC_FREE(src_fname_tmp);
>+	TALLOC_FREE(dst_fname_tmp);
>+	tevent_req_done(req);
>+}
>+
>+static NTSTATUS fruit_copy_chunk_recv(struct vfs_handle_struct *handle,
>+				      struct tevent_req *req,
>+				      off_t *copied)
>+{
>+	struct fruit_cc_state *fruit_cc_state = tevent_req_data(
>+		req, struct fruit_cc_state);
>+
>+	NTSTATUS status;
>+
>+	if (tevent_req_is_nterror(req, &status)) {
>+		DEBUG(1, ("server side copy chunk failed: %s\n",
>+			  nt_errstr(status)));
>+		*copied = 0;
>+		tevent_req_received(req);
>+		return status;
>+	}
>+
>+	*copied = fruit_cc_state->copied;
>+	tevent_req_received(req);
>+
>+	return NT_STATUS_OK;
>+}
>+
> static struct vfs_fn_pointers vfs_fruit_fns = {
> 	.connect_fn = fruit_connect,
> 
>@@ -3483,6 +3685,8 @@ static struct vfs_fn_pointers vfs_fruit_fns = {
> 	.fallocate_fn = fruit_fallocate,
> 	.create_file_fn = fruit_create_file,
> 	.readdir_attr_fn = fruit_readdir_attr,
>+	.copy_chunk_send_fn = fruit_copy_chunk_send,
>+	.copy_chunk_recv_fn = fruit_copy_chunk_recv,
> 
> 	/* NT ACL operations */
> 	.fget_nt_acl_fn = fruit_fget_nt_acl,
>diff --git a/source3/smbd/smb2_ioctl_network_fs.c b/source3/smbd/smb2_ioctl_network_fs.c
>index 5e70703..7d69c2b 100644
>--- a/source3/smbd/smb2_ioctl_network_fs.c
>+++ b/source3/smbd/smb2_ioctl_network_fs.c
>@@ -234,6 +234,36 @@ static struct tevent_req *fsctl_srv_copychunk_send(TALLOC_CTX *mem_ctx,
> 	/* any errors from here onwards should carry copychunk response data */
> 	state->out_data = COPYCHUNK_OUT_RSP;
> 
>+	if ((cc_copy.chunk_count == 0) &&
>+	    (lp_parm_bool(-1, "fruit", "copyfile", false) == true)) {
>+		/*
>+		 * Process as OS X copyfile request. Setting src_off =
>+		 * dst_off = 0 and a length of 0 is what must be used
>+		 * in the VFS to distinguish this from "normal"
>+		 * copychunk requests. I delibiretaly overload the
>+		 * params that way in order to avoid a VFS version
>+		 * bump.
>+		 */
>+		struct tevent_req *vfs_subreq;
>+		vfs_subreq = SMB_VFS_COPY_CHUNK_SEND(dst_fsp->conn,
>+						     state, ev,
>+						     state->src_fsp,
>+						     0,
>+						     state->dst_fsp,
>+						     0,
>+						     0);
>+		if (vfs_subreq == NULL) {
>+			DEBUG(1, ("VFS copy chunk send failed\n"));
>+			state->status = NT_STATUS_NO_MEMORY;
>+			tevent_req_nterror(req, state->status);
>+			return tevent_req_post(req, ev);
>+		}
>+		tevent_req_set_callback(vfs_subreq,
>+					fsctl_srv_copychunk_vfs_done, req);
>+		state->dispatch_count++;
>+		return req;
>+	}
>+
> 	for (i = 0; i < cc_copy.chunk_count; i++) {
> 		struct tevent_req *vfs_subreq;
> 		chunk = &cc_copy.chunks[i];
>-- 
>2.1.0
>

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Attachments on bug 11317: 11133 | 11134 | 11143 | 11152 | 11156 | 11168 | 11324 | 11327