[Libguestfs] [PATCH v7 28/29] daemon: Reimplement ‘device_index’ API in OCaml.
---
daemon/devsparts.c | 21 ---------------------
daemon/devsparts.ml | 11 +++++++++++
daemon/devsparts.mli | 6 ++----
generator/actions_core.ml | 1 +
4 files changed, 14 insertions(+), 25 deletions(-)
diff --git a/daemon/devsparts.c b/daemon/devsparts.c
index 12e779326..7c65be1dc 100644
--- a/daemon/devsparts.c
+++ b/daemon/devsparts.c
@@ -33,27 +33,6 @@
#include "daemon.h"
#include "actions.h"
-int
-do_device_index (const char *device)
-{
- size_t i;
- int ret = -1;
- CLEANUP_FREE_STRING_LIST char **devices = do_list_devices ();
-
- if (devices == NULL)
- return -1;
-
- for (i = 0; devices[i] != NULL; ++i) {
- if (STREQ (device, devices[i]))
- ret = (int) i;
- }
-
- if (ret == -1)
- reply_with_error ("device not found");
-
- return ret;
-}
-
#define GUESTFSDIR "/dev/disk/guestfs"
char **
diff --git a/daemon/devsparts.ml b/daemon/devsparts.ml
index 273612516..4d273f59e 100644
--- a/daemon/devsparts.ml
+++ b/daemon/devsparts.ml
@@ -109,3 +109,14 @@ let is_whole_device device =
try ignore (stat devpath); true
with Unix_error ((ENOENT|ENOTDIR), _, _) -> false
+
+let device_index device =
+ (* This is the algorithm which was used by the C version. Why
+ * can't we use drive_index from C_utils? XXX
+ *)
+ let rec loop i = function
+ | [] -> failwithf "%s: device not found" device
+ | dev :: devices when dev = device -> i
+ | _ :: devices -> loop (i+1) devices
+ in
+ loop 0 (list_devices ())
diff --git a/daemon/devsparts.mli b/daemon/devsparts.mli
index 8be47e752..4afb36bec 100644
--- a/daemon/devsparts.mli
+++ b/daemon/devsparts.mli
@@ -18,10 +18,8 @@
val list_devices : unit -> string list
val list_partitions : unit -> string list
-
-val nr_devices : unit -> int
-
val part_to_dev : string -> string
val part_to_partnum : string -> int
-
val is_whole_device : string -> bool
+val nr_devices : unit -> int
+val device_index : string -> int
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index c3421133e..ea0735676 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -7419,6 +7419,7 @@ instead of, or after calling C<guestfs_zero_free_space>."
};
{ defaults with
name = "device_index"; added = (1, 19, 7);
style = RInt "index", [String (Device, "device")], [];
+ impl = OCaml "Devsparts.device_index";
tests = [
InitEmpty, Always, TestResult (
[["device_index"; "/dev/sda"]], "ret == 0"), []
--
2.13.0