[PATCH v4 3/4] libxl: add libxl_get_parameters() function

From: Vasilis Liaskovitis <vliaskovitis@suse.com>
To: xen-devel@lists.xenproject.org
Cc: jgross@suse.com, sstabellini@kernel.org, wei.liu2@citrix.com,
	jbeulich@suse.com, George.Dunlap@eu.citrix.com,
	andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com,
	tim@xen.org, vliaskovitis@suse.com, anthony.perard@citrix.com,
	dgdegra@tycho.nsa.gov
Subject: [PATCH v4 3/4] libxl: add libxl_get_parameters() function
Date: Tue, 28 May 2019 16:54:15 +0200	[thread overview]
Message-ID: <20190528145416.16918-4-vliaskovitis@suse.com> (raw)
In-Reply-To: <20190528145416.16918-1-vliaskovitis@suse.com>

Add a new libxl function to get hypervisor parameters.

Signed-off-by: Vasilis Liaskovitis <vliaskovitis@suse.com>
---
 tools/libxl/libxl.c | 19 +++++++++++++++++++
 tools/libxl/libxl.h |  1 +
 2 files changed, 20 insertions(+)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index ec71574e99..9bb0382c38 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -669,6 +669,25 @@ int libxl_set_parameters(libxl_ctx *ctx, char *params)
     return 0;
 }
 
+int libxl_get_parameters(libxl_ctx *ctx, char *params, char *values)
+{
+    int r, rc;
+    GC_INIT(ctx);
+
+    r = xc_get_parameters(ctx->xch, params, values);
+    if (r < 0) {
+        LOGE(ERROR, "getting parameters");
+        rc = ERROR_FAIL;
+        goto out;
+    }
+
+    rc = 0;
+
+out:
+    GC_FREE;
+    return rc;
+}
+
 static int fd_set_flags(libxl_ctx *ctx, int fd,
                         int fcntlgetop, int fcntlsetop, const char *fl,
                         int flagmask, int set_p)
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index a38e5cdba2..360a757a06 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -2307,6 +2307,7 @@ int libxl_send_trigger(libxl_ctx *ctx, uint32_t domid,
 int libxl_send_sysrq(libxl_ctx *ctx, uint32_t domid, char sysrq);
 int libxl_send_debug_keys(libxl_ctx *ctx, char *keys);
 int libxl_set_parameters(libxl_ctx *ctx, char *params);
+int libxl_get_parameters(libxl_ctx *ctx, char *params, char *values);
 
 typedef struct libxl__xen_console_reader libxl_xen_console_reader;
 
-- 
2.20.1


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