Fix: timer_expire_entry changed in 4.19.312

[lttng-modules.git] / lttng-context-hostname.c

diff --git a/lttng-context-hostname.c b/lttng-context-hostname.c
deleted file mode 100644 (file)
index 791fed4..0000000
--- a/lttng-context-hostname.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * lttng-context-hostname.c
- *
- * LTTng hostname context.
- *
- * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#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;
-}
-
-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;
-       field->event_field.type.u.array.elem_type.atype = atype_integer;
-       field->event_field.type.u.array.elem_type.u.basic.integer.size = sizeof(char) * CHAR_BIT;
-       field->event_field.type.u.array.elem_type.u.basic.integer.alignment = lttng_alignof(char) * CHAR_BIT;
-       field->event_field.type.u.array.elem_type.u.basic.integer.signedness = lttng_is_signed_type(char);
-       field->event_field.type.u.array.elem_type.u.basic.integer.reverse_byte_order = 0;
-       field->event_field.type.u.array.elem_type.u.basic.integer.base = 10;
-       field->event_field.type.u.array.elem_type.u.basic.integer.encoding = lttng_encode_UTF8;
-       field->event_field.type.u.array.length = LTTNG_HOSTNAME_CTX_LEN;
-
-       field->get_size = hostname_get_size;
-       field->record = hostname_record;
-       field->get_value = hostname_get_value;
-       lttng_context_update(*ctx);
-       wrapper_vmalloc_sync_all();
-       return 0;
-}
-EXPORT_SYMBOL_GPL(lttng_add_hostname_to_ctx);