X-Git-Url: http://git.liburcu.org/?p=lttng-modules.git;a=blobdiff_plain;f=lttng-context-hostname.c;h=e485aa9742c567a2befb343ffa9e17e925af2f4f;hp=a16da3507de719e7a8468f96aa268018103de916;hb=HEAD;hpb=263b6c88138c3354d63dba3c70a965de94becd22

diff --git a/lttng-context-hostname.c b/lttng-context-hostname.c
deleted file mode 100644
index a16da350..00000000
--- a/lttng-context-hostname.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- *
- * lttng-context-hostname.c
- *
- * LTTng hostname context.
- *
- * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/utsname.h>
-#include <lttng-events.h>
-#include <wrapper/ringbuffer/frontend_types.h>
-#include <wrapper/vmalloc.h>
-#include <lttng-tracer.h>
-
-#define LTTNG_HOSTNAME_CTX_LEN	(__NEW_UTS_LEN + 1)
-
-static
-size_t hostname_get_size(size_t offset)
-{
-	size_t size = 0;
-
-	size += LTTNG_HOSTNAME_CTX_LEN;
-	return size;
-}
-
-static
-void hostname_record(struct lttng_ctx_field *field,
-		 struct lib_ring_buffer_ctx *ctx,
-		 struct lttng_channel *chan)
-{
-	struct nsproxy *nsproxy;
-	struct uts_namespace *ns;
-	char *hostname;
-
-	/*
-	 * No need to take the RCU read-side lock to read current
-	 * nsproxy. (documented in nsproxy.h)
-	 */
-	nsproxy = current->nsproxy;
-	if (nsproxy) {
-		ns = nsproxy->uts_ns;
-		hostname = ns->name.nodename;
-		chan->ops->event_write(ctx, hostname,
-				LTTNG_HOSTNAME_CTX_LEN);
-	} else {
-		chan->ops->event_memset(ctx, 0,
-				LTTNG_HOSTNAME_CTX_LEN);
-	}
-}
-
-static
-void hostname_get_value(struct lttng_ctx_field *field,
-		struct lttng_probe_ctx *lttng_probe_ctx,
-		union lttng_ctx_value *value)
-{
-	struct nsproxy *nsproxy;
-	struct uts_namespace *ns;
-	char *hostname;
-
-	/*
-	 * No need to take the RCU read-side lock to read current
-	 * nsproxy. (documented in nsproxy.h)
-	 */
-	nsproxy = current->nsproxy;
-	if (nsproxy) {
-		ns = nsproxy->uts_ns;
-		hostname = ns->name.nodename;
-	} else {
-		hostname = "";
-	}
-	value->str = hostname;
-}
-
-static const struct lttng_type hostname_array_elem_type =
-	__type_integer(char, 0, 0, -1, __BYTE_ORDER, 10, UTF8);
-
-int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx)
-{
-	struct lttng_ctx_field *field;
-
-	field = lttng_append_context(ctx);
-	if (!field)
-		return -ENOMEM;
-	if (lttng_find_context(*ctx, "hostname")) {
-		lttng_remove_context_field(ctx, field);
-		return -EEXIST;
-	}
-	field->event_field.name = "hostname";
-	field->event_field.type.atype = atype_array_nestable;
-	field->event_field.type.u.array_nestable.elem_type =
-		&hostname_array_elem_type;
-	field->event_field.type.u.array_nestable.length = LTTNG_HOSTNAME_CTX_LEN;
-	field->event_field.type.u.array_nestable.alignment = 0;
-
-	field->get_size = hostname_get_size;
-	field->record = hostname_record;
-	field->get_value = hostname_get_value;
-	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_mappings();
-	return 0;
-}
-EXPORT_SYMBOL_GPL(lttng_add_hostname_to_ctx);