[PATCH ocaml 1/3] block_peek, memory_peek: Use bytes for return buffer.

[Richard W.M. Jones]

Strings are immutable in modern OCaml.
---
 libvirt/libvirt.ml          | 4 ++--
 libvirt/libvirt.mli         | 4 ++--
 libvirt/libvirt_c_oneoffs.c | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/libvirt/libvirt.ml b/libvirt/libvirt.ml
index 7f9d0e4..bdb9460 100644
--- a/libvirt/libvirt.ml
+++ b/libvirt/libvirt.ml
@@ -731,8 +731,8 @@ struct
   external migrate : [>`W] t -> [>`W] Connect.t -> migrate_flag list -> ?dname:string -> ?uri:string -> ?bandwidth:int -> unit -> rw t = "ocaml_libvirt_domain_migrate_bytecode" "ocaml_libvirt_domain_migrate_native"
   external block_stats : [>`R] t -> string -> block_stats = "ocaml_libvirt_domain_block_stats"
   external interface_stats : [>`R] t -> string -> interface_stats = "ocaml_libvirt_domain_interface_stats"
-  external block_peek : [>`W] t -> string -> int64 -> int -> string -> int -> unit = "ocaml_libvirt_domain_block_peek_bytecode" "ocaml_libvirt_domain_block_peek_native"
-  external memory_peek : [>`W] t -> memory_flag list -> int64 -> int -> string -> int -> unit = "ocaml_libvirt_domain_memory_peek_bytecode" "ocaml_libvirt_domain_memory_peek_native"
+  external block_peek : [>`W] t -> string -> int64 -> int -> bytes -> int -> unit = "ocaml_libvirt_domain_block_peek_bytecode" "ocaml_libvirt_domain_block_peek_native"
+  external memory_peek : [>`W] t -> memory_flag list -> int64 -> int -> bytes -> int -> unit = "ocaml_libvirt_domain_memory_peek_bytecode" "ocaml_libvirt_domain_memory_peek_native"
 
   external get_all_domain_stats : [>`R] Connect.t -> stats_type list -> get_all_domain_stats_flag list -> domain_stats_record array = "ocaml_libvirt_domain_get_all_domain_stats"
 
diff --git a/libvirt/libvirt.mli b/libvirt/libvirt.mli
index 0d74199..7900392 100644
--- a/libvirt/libvirt.mli
+++ b/libvirt/libvirt.mli
@@ -708,7 +708,7 @@ sig
   val interface_stats : [>`R] t -> string -> interface_stats
     (** Returns network interface stats. *)
 
-  val block_peek : [>`W] t -> string -> int64 -> int -> string -> int -> unit
+  val block_peek : [>`W] t -> string -> int64 -> int -> bytes -> int -> unit
     (** [block_peek dom path offset size buf boff] reads [size] bytes at
 	[offset] in the domain's [path] block device.
 
@@ -717,7 +717,7 @@ sig
 
 	See also {!max_peek}. *)
   val memory_peek : [>`W] t -> memory_flag list -> int64 -> int ->
-    string -> int -> unit
+    bytes -> int -> unit
     (** [memory_peek dom Virtual offset size] reads [size] bytes
 	at [offset] in the domain's virtual memory.
 
diff --git a/libvirt/libvirt_c_oneoffs.c b/libvirt/libvirt_c_oneoffs.c
index 40384e8..8468c73 100644
--- a/libvirt/libvirt_c_oneoffs.c
+++ b/libvirt/libvirt_c_oneoffs.c
@@ -1057,7 +1057,7 @@ ocaml_libvirt_domain_block_peek_native (value domv, value pathv, value offsetv,
   const char *path = String_val (pathv);
   unsigned long long offset = Int64_val (offsetv);
   size_t size = Int_val (sizev);
-  char *buffer = String_val (bufferv);
+  unsigned char *buffer = Bytes_val (bufferv);
   int boff = Int_val (boffv);
   int r;
 
@@ -1089,7 +1089,7 @@ ocaml_libvirt_domain_memory_peek_native (value domv, value flagsv, value offsetv
   int flags = 0;
   unsigned long long offset = Int64_val (offsetv);
   size_t size = Int_val (sizev);
-  char *buffer = String_val (bufferv);
+  unsigned char *buffer = Bytes_val (bufferv);
   int boff = Int_val (boffv);
   int r;
 
-- 
2.24.1