thr3ads.net - Libguestfs - Re: [Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs. [Jun 2015]

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Richard W.M. Jones

2015-Jun-23 12:25 UTC

[Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

This allows you to append one file to another:

  copy-file-to-file /input.txt /output.txt append:true

will append the contents of /input.txt to /output.txt.
---
 daemon/copy.c        | 38 +++++++++++++++++++++++++++++++-------
 generator/actions.ml | 29 +++++++++++++++++++++--------
 2 files changed, 52 insertions(+), 15 deletions(-)

diff --git a/daemon/copy.c b/daemon/copy.c
index bab00fe..6f3e844 100644
--- a/daemon/copy.c
+++ b/daemon/copy.c
@@ -30,7 +30,6 @@
 #include "actions.h"
 
 /* wrflags */
-#define DEST_FILE_FLAGS O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY|O_CLOEXEC, 0666
 #define DEST_DEVICE_FLAGS O_WRONLY|O_CLOEXEC, 0
 
 /* flags */
@@ -210,8 +209,13 @@ copy (const char *src, const char *src_display,
 int
 do_copy_device_to_device (const char *src, const char *dest,
                           int64_t srcoffset, int64_t destoffset, int64_t size,
-                          int sparse)
+                          int sparse, int append)
 {
+  if ((optargs_bitmask & GUESTFS_COPY_DEVICE_TO_DEVICE_APPEND_BITMASK)
&&
+      append) {
+    reply_with_error ("the append flag cannot be set for this call");
+    return -1;
+  }
   return copy (src, src, dest, dest, DEST_DEVICE_FLAGS, 0,
                srcoffset, destoffset, size, sparse);
 }
@@ -219,23 +223,30 @@ do_copy_device_to_device (const char *src, const char
*dest,
 int
 do_copy_device_to_file (const char *src, const char *dest,
                         int64_t srcoffset, int64_t destoffset, int64_t size,
-                        int sparse)
+                        int sparse, int append)
 {
   CLEANUP_FREE char *dest_buf = sysroot_path (dest);
+  int wrflags = O_WRONLY|O_CREAT|O_NOCTTY|O_CLOEXEC;
 
   if (!dest_buf) {
     reply_with_perror ("malloc");
     return -1;
   }
 
-  return copy (src, src, dest_buf, dest, DEST_FILE_FLAGS, 0,
+  if ((optargs_bitmask & GUESTFS_COPY_DEVICE_TO_FILE_APPEND_BITMASK)
&&
+      append)
+    wrflags |= O_APPEND;
+  else
+    wrflags |= O_TRUNC;
+
+  return copy (src, src, dest_buf, dest, wrflags, 0666, 0,
                srcoffset, destoffset, size, sparse);
 }
 
 int
 do_copy_file_to_device (const char *src, const char *dest,
                         int64_t srcoffset, int64_t destoffset, int64_t size,
-                        int sparse)
+                        int sparse, int append)
 {
   CLEANUP_FREE char *src_buf = sysroot_path (src);
 
@@ -244,6 +255,12 @@ do_copy_file_to_device (const char *src, const char *dest,
     return -1;
   }
 
+  if ((optargs_bitmask & GUESTFS_COPY_FILE_TO_DEVICE_APPEND_BITMASK)
&&
+      append) {
+    reply_with_error ("the append flag cannot be set for this call");
+    return -1;
+  }
+
   return copy (src_buf, src, dest, dest, DEST_DEVICE_FLAGS, 0,
                srcoffset, destoffset, size, sparse);
 }
@@ -251,9 +268,10 @@ do_copy_file_to_device (const char *src, const char *dest,
 int
 do_copy_file_to_file (const char *src, const char *dest,
                       int64_t srcoffset, int64_t destoffset, int64_t size,
-                      int sparse)
+                      int sparse, int append)
 {
   CLEANUP_FREE char *src_buf = NULL, *dest_buf = NULL;
+  int wrflags = O_WRONLY|O_CREAT|O_NOCTTY|O_CLOEXEC;
 
   src_buf = sysroot_path (src);
   if (!src_buf) {
@@ -267,7 +285,13 @@ do_copy_file_to_file (const char *src, const char *dest,
     return -1;
   }
 
-  return copy (src_buf, src, dest_buf, dest, DEST_FILE_FLAGS,
+  if ((optargs_bitmask & GUESTFS_COPY_FILE_TO_FILE_APPEND_BITMASK)
&&
+      append)
+    wrflags |= O_APPEND;
+  else
+    wrflags |= O_TRUNC;
+
+  return copy (src_buf, src, dest_buf, dest, wrflags, 0666,
                COPY_UNLINK_DEST_ON_FAILURE,
                srcoffset, destoffset, size, sparse);
 }
diff --git a/generator/actions.ml b/generator/actions.ml
index d5e5ccf..11b8652 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -9424,7 +9424,7 @@ See also C<guestfs_part_to_dev>." };
 
   { defaults with
     name = "copy_device_to_device"; added = (1, 13, 25);
-    style = RErr, [Device "src"; Device "dest"], [OInt64
"srcoffset"; OInt64 "destoffset"; OInt64 "size";
OBool "sparse"];
+    style = RErr, [Device "src"; Device "dest"], [OInt64
"srcoffset"; OInt64 "destoffset"; OInt64 "size";
OBool "sparse"; OBool "append"];
     proc_nr = Some 294;
     progress = true;
     shortdesc = "copy from source device to destination device";
@@ -9448,6 +9448,11 @@ overlapping regions may not be copied correctly.
 If the destination is a file, it is created if required.  If
 the destination file is not large enough, it is extended.
 
+If the destination is a file and the C<append> flag is not set,
+then the destination file is truncated.  If the C<append> flag is
+set, then the copy appends to the destination file.  The C<append>
+flag currently cannot be set for devices.
+
 If the C<sparse> flag is true then the call avoids writing
 blocks that contain only zeroes, which can help in some situations
 where the backing disk is thin-provisioned.  Note that unless
@@ -9456,7 +9461,7 @@ in incorrect copying." };
 
   { defaults with
     name = "copy_device_to_file"; added = (1, 13, 25);
-    style = RErr, [Device "src"; Pathname "dest"], [OInt64
"srcoffset"; OInt64 "destoffset"; OInt64 "size";
OBool "sparse"];
+    style = RErr, [Device "src"; Pathname "dest"], [OInt64
"srcoffset"; OInt64 "destoffset"; OInt64 "size";
OBool "sparse"; OBool "append"];
     proc_nr = Some 295;
     progress = true;
     shortdesc = "copy from source device to destination file";
@@ -9466,7 +9471,7 @@ of this call." };
 
   { defaults with
     name = "copy_file_to_device"; added = (1, 13, 25);
-    style = RErr, [Pathname "src"; Device "dest"], [OInt64
"srcoffset"; OInt64 "destoffset"; OInt64 "size";
OBool "sparse"];
+    style = RErr, [Pathname "src"; Device "dest"], [OInt64
"srcoffset"; OInt64 "destoffset"; OInt64 "size";
OBool "sparse"; OBool "append"];
     proc_nr = Some 296;
     progress = true;
     shortdesc = "copy from source file to destination device";
@@ -9476,24 +9481,32 @@ of this call." };
 
   { defaults with
     name = "copy_file_to_file"; added = (1, 13, 25);
-    style = RErr, [Pathname "src"; Pathname "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"];
+    style = RErr, [Pathname "src"; Pathname "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"; OBool "append"];
     proc_nr = Some 297;
     progress = true;
     tests = [
       InitScratchFS, Always, TestResult (
         [["mkdir"; "/copyff"];
          ["write"; "/copyff/src"; "hello,
world"];
-         ["copy_file_to_file"; "/copyff/src";
"/copyff/dest"; ""; ""; "";
""];
+         ["copy_file_to_file"; "/copyff/src";
"/copyff/dest"; ""; ""; "";
""; "false"];
          ["read_file"; "/copyff/dest"]],
         "compare_buffers (ret, size, \"hello, world\", 12) ==
0"), [];
-      let size = 1024 * 1024 in
       InitScratchFS, Always, TestResultTrue (
+        let size = 1024 * 1024 in
         [["mkdir"; "/copyff2"];
          ["fill"; "0"; string_of_int size;
"/copyff2/src"];
          ["touch"; "/copyff2/dest"];
          ["truncate_size"; "/copyff2/dest"; string_of_int
size];
-         ["copy_file_to_file"; "/copyff2/src";
"/copyff2/dest"; ""; ""; "";
"true"];
-         ["is_zero"; "/copyff2/dest"]]), []
+         ["copy_file_to_file"; "/copyff2/src";
"/copyff2/dest"; ""; ""; "";
"true"; "false"];
+         ["is_zero"; "/copyff2/dest"]]), [];
+      InitScratchFS, Always, TestResult (
+        [["mkdir"; "/copyff3"];
+         ["write"; "/copyff3/src"; "hello,
world"];
+         ["copy_file_to_file"; "/copyff3/src";
"/copyff3/dest"; ""; ""; "";
""; "true"];
+         ["copy_file_to_file"; "/copyff3/src";
"/copyff3/dest"; ""; ""; "";
""; "true"];
+         ["copy_file_to_file"; "/copyff3/src";
"/copyff3/dest"; ""; ""; "";
""; "true"];
+         ["read_file"; "/copyff3/dest"]],
+        "compare_buffers (ret, size, \"hello, worldhello, worldhello,
world\", 12*3) == 0"), [];
     ];
     shortdesc = "copy from source file to destination file";
     longdesc = "\
-- 
2.3.1

Pino Toscano

2015-Jun-23 17:40 UTC

head link

Re: [Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

In data martedì 23 giugno 2015 13:25:28, Richard W.M. Jones ha
scritto:> This allows you to append one file to another:
> 
>   copy-file-to-file /input.txt /output.txt append:true
> 
> will append the contents of /input.txt to /output.txt.
> ---
>  daemon/copy.c        | 38 +++++++++++++++++++++++++++++++-------
>  generator/actions.ml | 29 +++++++++++++++++++++--------
>  2 files changed, 52 insertions(+), 15 deletions(-)
> 
> diff --git a/daemon/copy.c b/daemon/copy.c
> index bab00fe..6f3e844 100644
> --- a/daemon/copy.c
> +++ b/daemon/copy.c
> @@ -30,7 +30,6 @@
>  #include "actions.h"
>  
>  /* wrflags */
> -#define DEST_FILE_FLAGS O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY|O_CLOEXEC, 0666
>  #define DEST_DEVICE_FLAGS O_WRONLY|O_CLOEXEC, 0
>  
>  /* flags */
> @@ -210,8 +209,13 @@ copy (const char *src, const char *src_display,
>  int
>  do_copy_device_to_device (const char *src, const char *dest,
>                            int64_t srcoffset, int64_t destoffset, int64_t
size,
> -                          int sparse)
> +                          int sparse, int append)
>  {
> +  if ((optargs_bitmask & GUESTFS_COPY_DEVICE_TO_DEVICE_APPEND_BITMASK)
&&
> +      append) {
> +    reply_with_error ("the append flag cannot be set for this
call");
> +    return -1;
> +  }
>    return copy (src, src, dest, dest, DEST_DEVICE_FLAGS, 0,
>                 srcoffset, destoffset, size, sparse);
>  }
> @@ -219,23 +223,30 @@ do_copy_device_to_device (const char *src, const char
*dest,
>  int
>  do_copy_device_to_file (const char *src, const char *dest,
>                          int64_t srcoffset, int64_t destoffset, int64_t
size,
> -                        int sparse)
> +                        int sparse, int append)
>  {
>    CLEANUP_FREE char *dest_buf = sysroot_path (dest);
> +  int wrflags = O_WRONLY|O_CREAT|O_NOCTTY|O_CLOEXEC;
Cannot DEST_FILE_FLAGS (without O_TRUNC, of course) be used here (and
below) to avoid copying&pasting these attributes?
>  
>    if (!dest_buf) {
>      reply_with_perror ("malloc");
>      return -1;
>    }
>  
> -  return copy (src, src, dest_buf, dest, DEST_FILE_FLAGS, 0,
> +  if ((optargs_bitmask & GUESTFS_COPY_DEVICE_TO_FILE_APPEND_BITMASK)
&&
> +      append)
> +    wrflags |= O_APPEND;
> +  else
> +    wrflags |= O_TRUNC;
> +
> +  return copy (src, src, dest_buf, dest, wrflags, 0666, 0,
>                 srcoffset, destoffset, size, sparse);
>  }
>  
>  int
>  do_copy_file_to_device (const char *src, const char *dest,
>                          int64_t srcoffset, int64_t destoffset, int64_t
size,
> -                        int sparse)
> +                        int sparse, int append)
>  {
>    CLEANUP_FREE char *src_buf = sysroot_path (src);
>  
> @@ -244,6 +255,12 @@ do_copy_file_to_device (const char *src, const char
*dest,
>      return -1;
>    }
>  
> +  if ((optargs_bitmask & GUESTFS_COPY_FILE_TO_DEVICE_APPEND_BITMASK)
&&
> +      append) {
> +    reply_with_error ("the append flag cannot be set for this
call");
> +    return -1;
> +  }
> +
>    return copy (src_buf, src, dest, dest, DEST_DEVICE_FLAGS, 0,
>                 srcoffset, destoffset, size, sparse);
>  }
> @@ -251,9 +268,10 @@ do_copy_file_to_device (const char *src, const char
*dest,
>  int
>  do_copy_file_to_file (const char *src, const char *dest,
>                        int64_t srcoffset, int64_t destoffset, int64_t size,
> -                      int sparse)
> +                      int sparse, int append)
>  {
>    CLEANUP_FREE char *src_buf = NULL, *dest_buf = NULL;
> +  int wrflags = O_WRONLY|O_CREAT|O_NOCTTY|O_CLOEXEC;
>  
>    src_buf = sysroot_path (src);
>    if (!src_buf) {
> @@ -267,7 +285,13 @@ do_copy_file_to_file (const char *src, const char
*dest,
>      return -1;
>    }
>  
> -  return copy (src_buf, src, dest_buf, dest, DEST_FILE_FLAGS,
> +  if ((optargs_bitmask & GUESTFS_COPY_FILE_TO_FILE_APPEND_BITMASK)
&&
> +      append)
> +    wrflags |= O_APPEND;
> +  else
> +    wrflags |= O_TRUNC;
> +
> +  return copy (src_buf, src, dest_buf, dest, wrflags, 0666,
>                 COPY_UNLINK_DEST_ON_FAILURE,
>                 srcoffset, destoffset, size, sparse);
>  }
> diff --git a/generator/actions.ml b/generator/actions.ml
> index d5e5ccf..11b8652 100644
> --- a/generator/actions.ml
> +++ b/generator/actions.ml
> @@ -9424,7 +9424,7 @@ See also C<guestfs_part_to_dev>." };
>  
>    { defaults with
>      name = "copy_device_to_device"; added = (1, 13, 25);
> -    style = RErr, [Device "src"; Device "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"];
> +    style = RErr, [Device "src"; Device "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"; OBool "append"];
>      proc_nr = Some 294;
>      progress = true;
>      shortdesc = "copy from source device to destination device";
> @@ -9448,6 +9448,11 @@ overlapping regions may not be copied correctly.
>  If the destination is a file, it is created if required.  If
>  the destination file is not large enough, it is extended.
>  
> +If the destination is a file and the C<append> flag is not set,
> +then the destination file is truncated.  If the C<append> flag is
> +set, then the copy appends to the destination file.  The C<append>
> +flag currently cannot be set for devices.
> +
>  If the C<sparse> flag is true then the call avoids writing
>  blocks that contain only zeroes, which can help in some situations
>  where the backing disk is thin-provisioned.  Note that unless
> @@ -9456,7 +9461,7 @@ in incorrect copying." };
>  
>    { defaults with
>      name = "copy_device_to_file"; added = (1, 13, 25);
> -    style = RErr, [Device "src"; Pathname "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"];
> +    style = RErr, [Device "src"; Pathname "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"; OBool "append"];
>      proc_nr = Some 295;
>      progress = true;
>      shortdesc = "copy from source device to destination file";
> @@ -9466,7 +9471,7 @@ of this call." };
>  
>    { defaults with
>      name = "copy_file_to_device"; added = (1, 13, 25);
> -    style = RErr, [Pathname "src"; Device "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"];
> +    style = RErr, [Pathname "src"; Device "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"; OBool "append"];
>      proc_nr = Some 296;
>      progress = true;
>      shortdesc = "copy from source file to destination device";
> @@ -9476,24 +9481,32 @@ of this call." };
>  
>    { defaults with
>      name = "copy_file_to_file"; added = (1, 13, 25);
> -    style = RErr, [Pathname "src"; Pathname "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"];
> +    style = RErr, [Pathname "src"; Pathname "dest"],
[OInt64 "srcoffset"; OInt64 "destoffset"; OInt64
"size"; OBool "sparse"; OBool "append"];
>      proc_nr = Some 297;
>      progress = true;
>      tests = [
>        InitScratchFS, Always, TestResult (
>          [["mkdir"; "/copyff"];
>           ["write"; "/copyff/src"; "hello,
world"];
> -         ["copy_file_to_file"; "/copyff/src";
"/copyff/dest"; ""; ""; "";
""];
> +         ["copy_file_to_file"; "/copyff/src";
"/copyff/dest"; ""; ""; "";
""; "false"];
>           ["read_file"; "/copyff/dest"]],
>          "compare_buffers (ret, size, \"hello, world\", 12)
== 0"), [];
> -      let size = 1024 * 1024 in
>        InitScratchFS, Always, TestResultTrue (
> +        let size = 1024 * 1024 in
This seems unused? Or is it supposed to be used and its usage has been
forgotten?
>          [["mkdir"; "/copyff2"];
>           ["fill"; "0"; string_of_int size;
"/copyff2/src"];
>           ["touch"; "/copyff2/dest"];
>           ["truncate_size"; "/copyff2/dest";
string_of_int size];
> -         ["copy_file_to_file"; "/copyff2/src";
"/copyff2/dest"; ""; ""; "";
"true"];
> -         ["is_zero"; "/copyff2/dest"]]), []
> +         ["copy_file_to_file"; "/copyff2/src";
"/copyff2/dest"; ""; ""; "";
"true"; "false"];
> +         ["is_zero"; "/copyff2/dest"]]), [];
> +      InitScratchFS, Always, TestResult (
> +        [["mkdir"; "/copyff3"];
> +         ["write"; "/copyff3/src"; "hello,
world"];
> +         ["copy_file_to_file"; "/copyff3/src";
"/copyff3/dest"; ""; ""; "";
""; "true"];
> +         ["copy_file_to_file"; "/copyff3/src";
"/copyff3/dest"; ""; ""; "";
""; "true"];
> +         ["copy_file_to_file"; "/copyff3/src";
"/copyff3/dest"; ""; ""; "";
""; "true"];
> +         ["read_file"; "/copyff3/dest"]],
> +        "compare_buffers (ret, size, \"hello, worldhello,
worldhello, world\", 12*3) == 0"), [];
>      ];
>      shortdesc = "copy from source file to destination file";
>      longdesc = "\
It would seem okay for me, although maybe we should decouple the enums
for flags, so there's no need to add non-functional append flags to the
*_to_device variants.

-- 
Pino Toscano

Richard W.M. Jones

2015-Jun-23 20:28 UTC

head link

Re: [Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

On Tue, Jun 23, 2015 at 07:40:57PM +0200, Pino Toscano
wrote:> In data martedì 23 giugno 2015 13:25:28, Richard W.M. Jones ha scritto:
> > This allows you to append one file to another:
> > 
> >   copy-file-to-file /input.txt /output.txt append:true
> > 
> > will append the contents of /input.txt to /output.txt.
> > ---
> >  daemon/copy.c        | 38 +++++++++++++++++++++++++++++++-------
> >  generator/actions.ml | 29 +++++++++++++++++++++--------
> >  2 files changed, 52 insertions(+), 15 deletions(-)
> > 
> > diff --git a/daemon/copy.c b/daemon/copy.c
> > index bab00fe..6f3e844 100644
> > --- a/daemon/copy.c
> > +++ b/daemon/copy.c
> > @@ -30,7 +30,6 @@
> >  #include "actions.h"
> >  
> >  /* wrflags */
> > -#define DEST_FILE_FLAGS O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY|O_CLOEXEC,
0666
> >  #define DEST_DEVICE_FLAGS O_WRONLY|O_CLOEXEC, 0
> >  
> >  /* flags */
> > @@ -210,8 +209,13 @@ copy (const char *src, const char *src_display,
> >  int
> >  do_copy_device_to_device (const char *src, const char *dest,
> >                            int64_t srcoffset, int64_t destoffset,
int64_t size,
> > -                          int sparse)
> > +                          int sparse, int append)
> >  {
> > +  if ((optargs_bitmask &
GUESTFS_COPY_DEVICE_TO_DEVICE_APPEND_BITMASK) &&
> > +      append) {
> > +    reply_with_error ("the append flag cannot be set for this
call");
> > +    return -1;
> > +  }
> >    return copy (src, src, dest, dest, DEST_DEVICE_FLAGS, 0,
> >                 srcoffset, destoffset, size, sparse);
> >  }
> > @@ -219,23 +223,30 @@ do_copy_device_to_device (const char *src, const
char *dest,
> >  int
> >  do_copy_device_to_file (const char *src, const char *dest,
> >                          int64_t srcoffset, int64_t destoffset,
int64_t size,
> > -                        int sparse)
> > +                        int sparse, int append)
> >  {
> >    CLEANUP_FREE char *dest_buf = sysroot_path (dest);
> > +  int wrflags = O_WRONLY|O_CREAT|O_NOCTTY|O_CLOEXEC;
> 
> Cannot DEST_FILE_FLAGS (without O_TRUNC, of course) be used here (and
> below) to avoid copying&pasting these attributes?
That was my original version.  I just questioned whether the code was
really any easier to read versus defining the set of O_ flags that
we're all pretty familiar with.
> >      tests = [
> >        InitScratchFS, Always, TestResult (
> >          [["mkdir"; "/copyff"];
> >           ["write"; "/copyff/src"; "hello,
world"];
> > -         ["copy_file_to_file"; "/copyff/src";
"/copyff/dest"; ""; ""; "";
""];
> > +         ["copy_file_to_file"; "/copyff/src";
"/copyff/dest"; ""; ""; "";
""; "false"];
> >           ["read_file"; "/copyff/dest"]],
> >          "compare_buffers (ret, size, \"hello, world\",
12) == 0"), [];
> > -      let size = 1024 * 1024 in
> >        InitScratchFS, Always, TestResultTrue (
> > +        let size = 1024 * 1024 in
> 
> This seems unused? Or is it supposed to be used and its usage has been
> forgotten?
> 
> >          [["mkdir"; "/copyff2"];
> >           ["fill"; "0"; string_of_int size;
"/copyff2/src"];
> >           ["touch"; "/copyff2/dest"];
> >           ["truncate_size"; "/copyff2/dest";
string_of_int size];
It's used here ^^

[...]
> It would seem okay for me, although maybe we should decouple the enums
> for flags, so there's no need to add non-functional append flags to the
> *_to_device variants.
This is an assumption of the current code, if you look at:

https://github.com/libguestfs/libguestfs/blob/master/daemon/copy.c#L39

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v

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Libguestfs - Jun 2015 - Re: [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

[Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

Re: [Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

Re: [Libguestfs] [PATCH] lib: Add optional 'append' parameter to copy-(device|file)-to-file APIs.

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