*
*/
+#include "inode.hpp"
+
#include <common/defaults.hpp>
#include <common/error.hpp>
#include <common/hashtable/utils.hpp>
#include <common/optional.hpp>
#include <common/string-utils/format.hpp>
#include <common/utils.hpp>
-#include <inttypes.h>
+
#include <lttng/constant.h>
+
+#include <inttypes.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <urcu/rculfhash.h>
#include <urcu/ref.h>
-#include "inode.hpp"
-
namespace {
struct inode_id {
dev_t device;
bool initialized;
unsigned long value;
} seed = {
- .lock = PTHREAD_MUTEX_INITIALIZER,
- .initialized = false,
- .value = 0,
+ .lock = PTHREAD_MUTEX_INITIALIZER,
+ .initialized = false,
+ .value = 0,
};
} /* namespace */
{
uint64_t device = id->device, inode_no = id->inode;
- return hash_key_u64(&device, seed.value) ^
- hash_key_u64(&inode_no, seed.value);
+ return hash_key_u64(&device, seed.value) ^ hash_key_u64(&inode_no, seed.value);
}
static int lttng_inode_match(struct cds_lfht_node *node, const void *key)
{
const struct inode_id *id = (inode_id *) key;
- const struct lttng_inode *inode = lttng::utils::container_of(
- node, <tng_inode::registry_node);
+ const struct lttng_inode *inode =
+ lttng::utils::container_of(node, <tng_inode::registry_node);
return inode->id.device == id->device && inode->id.inode == id->inode;
}
static void lttng_inode_free(struct rcu_head *head)
{
- struct lttng_inode *inode =
- lttng::utils::container_of(head, <tng_inode::rcu_head);
+ struct lttng_inode *inode = lttng::utils::container_of(head, <tng_inode::rcu_head);
free(inode);
}
-static int lttng_unlinked_file_pool_add_inode(
- struct lttng_unlinked_file_pool *pool,
- struct lttng_inode *inode)
+static int lttng_unlinked_file_pool_add_inode(struct lttng_unlinked_file_pool *pool,
+ struct lttng_inode *inode)
{
int ret;
const unsigned int unlinked_id = pool->next_id++;
char *inode_unlinked_name;
bool reference_acquired;
- DBG("Adding inode of %s to unlinked file pool as id %u",
- inode->location.path, unlinked_id);
+ DBG("Adding inode of %s to unlinked file pool as id %u", inode->location.path, unlinked_id);
ret = asprintf(&inode_unlinked_name, "%u", unlinked_id);
if (ret < 0) {
ERR("Failed to format unlinked inode name");
}
if (pool->file_count == 0) {
- DBG("Creating unlinked files directory at %s",
- pool->unlink_directory_path);
+ DBG("Creating unlinked files directory at %s", pool->unlink_directory_path);
LTTNG_ASSERT(!pool->unlink_directory_handle);
- ret = utils_mkdir(pool->unlink_directory_path,
- S_IRWXU | S_IRWXG, -1, -1);
+ ret = utils_mkdir(pool->unlink_directory_path, S_IRWXU | S_IRWXG, -1, -1);
if (ret) {
if (errno == EEXIST) {
/*
* error.
*/
DBG("Unlinked file directory \"%s\" already exists",
- pool->unlink_directory_path);
+ pool->unlink_directory_path);
} else {
PERROR("Failed to create unlinked files directory at %s",
- pool->unlink_directory_path);
+ pool->unlink_directory_path);
goto end;
}
}
- pool->unlink_directory_handle = lttng_directory_handle_create(
- pool->unlink_directory_path);
+ pool->unlink_directory_handle =
+ lttng_directory_handle_create(pool->unlink_directory_path);
if (!pool->unlink_directory_handle) {
ERR("Failed to create directory handle to unlinked file pool at %s",
- pool->unlink_directory_path);
+ pool->unlink_directory_path);
ret = -1;
goto end;
}
}
ret = lttng_directory_handle_rename(inode->location.directory_handle,
- inode->location.path, pool->unlink_directory_handle,
- inode_unlinked_name);
+ inode->location.path,
+ pool->unlink_directory_handle,
+ inode_unlinked_name);
if (ret) {
goto end;
}
lttng_directory_handle_put(inode->location.directory_handle);
inode->location.directory_handle = NULL;
- reference_acquired = lttng_directory_handle_get(
- pool->unlink_directory_handle);
+ reference_acquired = lttng_directory_handle_get(pool->unlink_directory_handle);
LTTNG_ASSERT(reference_acquired);
inode->location.directory_handle = pool->unlink_directory_handle;
return ret;
}
-static int lttng_unlinked_file_pool_remove_inode(
- struct lttng_unlinked_file_pool *pool,
- struct lttng_inode *inode)
+static int lttng_unlinked_file_pool_remove_inode(struct lttng_unlinked_file_pool *pool,
+ struct lttng_inode *inode)
{
int ret;
DBG("Removing inode with unlinked id %u from unlinked file pool",
- LTTNG_OPTIONAL_GET(inode->unlinked_id));
+ LTTNG_OPTIONAL_GET(inode->unlinked_id));
- ret = lttng_directory_handle_unlink_file(
- inode->location.directory_handle, inode->location.path);
+ ret = lttng_directory_handle_unlink_file(inode->location.directory_handle,
+ inode->location.path);
if (ret) {
PERROR("Failed to unlink file %s from unlinked file directory",
- inode->location.path);
+ inode->location.path);
goto end;
}
free(inode->location.path);
* error except through logging.
*/
PERROR("Failed to remove unlinked files directory at %s",
- pool->unlink_directory_path);
+ pool->unlink_directory_path);
}
lttng_directory_handle_put(pool->unlink_directory_handle);
pool->unlink_directory_handle = NULL;
LTTNG_ASSERT(inode->location.directory_handle);
LTTNG_ASSERT(inode->location.path);
- DBG("Removing %s from unlinked file pool",
- inode->location.path);
+ DBG("Removing %s from unlinked file pool", inode->location.path);
ret = lttng_unlinked_file_pool_remove_inode(inode->unlinked_file_pool, inode);
if (ret) {
PERROR("Failed to unlink %s", inode->location.path);
}
}
- lttng_directory_handle_put(
- inode->location.directory_handle);
+ lttng_directory_handle_put(inode->location.directory_handle);
inode->location.directory_handle = NULL;
free(inode->location.path);
inode->location.path = NULL;
urcu_ref_get(&inode->ref);
}
-struct lttng_unlinked_file_pool *lttng_unlinked_file_pool_create(
- const char *path)
+struct lttng_unlinked_file_pool *lttng_unlinked_file_pool_create(const char *path)
{
struct lttng_unlinked_file_pool *pool = zmalloc<lttng_unlinked_file_pool>();
if (!path || *path != '/') {
ERR("Unlinked file pool must be created with an absolute path, path = \"%s\"",
- path ? path : "NULL");
+ path ? path : "NULL");
goto error;
}
return NULL;
}
-void lttng_unlinked_file_pool_destroy(
- struct lttng_unlinked_file_pool *pool)
+void lttng_unlinked_file_pool_destroy(struct lttng_unlinked_file_pool *pool)
{
if (!pool) {
return;
urcu_ref_put(&inode->ref, lttng_inode_release);
}
-struct lttng_directory_handle *
-lttng_inode_get_location_directory_handle(
- struct lttng_inode *inode)
+struct lttng_directory_handle *lttng_inode_get_location_directory_handle(struct lttng_inode *inode)
{
if (inode->location.directory_handle) {
- const bool reference_acquired = lttng_directory_handle_get(
- inode->location.directory_handle);
+ const bool reference_acquired =
+ lttng_directory_handle_get(inode->location.directory_handle);
LTTNG_ASSERT(reference_acquired);
}
}
void lttng_inode_borrow_location(struct lttng_inode *inode,
- const struct lttng_directory_handle **out_directory_handle,
- const char **out_path)
+ const struct lttng_directory_handle **out_directory_handle,
+ const char **out_path)
{
if (out_directory_handle) {
*out_directory_handle = inode->location.directory_handle;
}
}
-int lttng_inode_rename(
- struct lttng_inode *inode,
- struct lttng_directory_handle *old_directory_handle,
- const char *old_path,
- struct lttng_directory_handle *new_directory_handle,
- const char *new_path,
- bool overwrite)
+int lttng_inode_rename(struct lttng_inode *inode,
+ struct lttng_directory_handle *old_directory_handle,
+ const char *old_path,
+ struct lttng_directory_handle *new_directory_handle,
+ const char *new_path,
+ bool overwrite)
{
int ret = 0;
char *new_path_copy = strdup(new_path);
bool reference_acquired;
DBG("Performing rename of inode from %s to %s with %s directory handles",
- old_path, new_path,
- lttng_directory_handle_equals(old_directory_handle,
- new_directory_handle) ?
- "identical" :
- "different");
+ old_path,
+ new_path,
+ lttng_directory_handle_equals(old_directory_handle, new_directory_handle) ?
+ "identical" :
+ "different");
if (!new_path_copy) {
ret = -ENOMEM;
if (inode->unlink_pending) {
WARN("An attempt to rename an unlinked file from %s to %s has been performed",
- old_path, new_path);
+ old_path,
+ new_path);
ret = -ENOENT;
goto end;
}
/* Verify that file doesn't exist. */
struct stat statbuf;
- ret = lttng_directory_handle_stat(
- new_directory_handle, new_path, &statbuf);
+ ret = lttng_directory_handle_stat(new_directory_handle, new_path, &statbuf);
if (ret == 0) {
- ERR("Refusing to rename %s as the destination already exists",
- old_path);
+ ERR("Refusing to rename %s as the destination already exists", old_path);
ret = -EEXIST;
goto end;
} else if (ret < 0 && errno != ENOENT) {
}
}
- ret = lttng_directory_handle_rename(old_directory_handle, old_path,
- new_directory_handle, new_path);
+ ret = lttng_directory_handle_rename(
+ old_directory_handle, old_path, new_directory_handle, new_path);
if (ret) {
PERROR("Failed to rename file %s to %s", old_path, new_path);
ret = -errno;
if (inode->unlink_pending) {
WARN("An attempt to re-unlink %s has been performed, ignoring.",
- inode->location.path);
+ inode->location.path);
ret = -ENOENT;
goto end;
}
* Move to the temporary "deleted" directory until all
* references are released.
*/
- ret = lttng_unlinked_file_pool_add_inode(
- inode->unlinked_file_pool, inode);
+ ret = lttng_unlinked_file_pool_add_inode(inode->unlinked_file_pool, inode);
if (ret) {
PERROR("Failed to add inode \"%s\" to the unlinked file pool",
- inode->location.path);
+ inode->location.path);
goto end;
}
inode->unlink_pending = true;
}
static struct lttng_inode *lttng_inode_create(const struct inode_id *id,
- struct cds_lfht *ht,
- struct lttng_unlinked_file_pool *unlinked_file_pool,
- struct lttng_directory_handle *directory_handle,
- const char *path)
+ struct cds_lfht *ht,
+ struct lttng_unlinked_file_pool *unlinked_file_pool,
+ struct lttng_directory_handle *directory_handle,
+ const char *path)
{
struct lttng_inode *inode = NULL;
char *path_copy;
}
pthread_mutex_unlock(&seed.lock);
- registry->inodes = cds_lfht_new(DEFAULT_HT_SIZE, 1, 0,
- CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL);
+ registry->inodes = cds_lfht_new(
+ DEFAULT_HT_SIZE, 1, 0, CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL);
if (!registry->inodes) {
goto error;
}
return NULL;
}
-void lttng_inode_registry_destroy(
- struct lttng_inode_registry *registry)
+void lttng_inode_registry_destroy(struct lttng_inode_registry *registry)
{
if (!registry) {
return;
free(registry);
}
-struct lttng_inode *lttng_inode_registry_get_inode(
- struct lttng_inode_registry *registry,
- struct lttng_directory_handle *handle,
- const char *path,
- int fd,
- struct lttng_unlinked_file_pool *unlinked_file_pool)
+struct lttng_inode *
+lttng_inode_registry_get_inode(struct lttng_inode_registry *registry,
+ struct lttng_directory_handle *handle,
+ const char *path,
+ int fd,
+ struct lttng_unlinked_file_pool *unlinked_file_pool)
{
int ret;
struct stat statbuf;
id.inode = statbuf.st_ino;
rcu_read_lock();
- cds_lfht_lookup(registry->inodes, lttng_inode_id_hash(&id),
- lttng_inode_match, &id, &iter);
+ cds_lfht_lookup(registry->inodes, lttng_inode_id_hash(&id), lttng_inode_match, &id, &iter);
node = cds_lfht_iter_get_node(&iter);
if (node) {
- inode = lttng::utils::container_of(
- node, <tng_inode::registry_node);
+ inode = lttng::utils::container_of(node, <tng_inode::registry_node);
lttng_inode_get(inode);
goto end_unlock;
}
- inode = lttng_inode_create(&id, registry->inodes, unlinked_file_pool,
- handle, path);
+ inode = lttng_inode_create(&id, registry->inodes, unlinked_file_pool, handle, path);
if (!inode) {
goto end_unlock;
}
node = cds_lfht_add_unique(registry->inodes,
- lttng_inode_id_hash(&inode->id), lttng_inode_match,
- &inode->id, &inode->registry_node);
+ lttng_inode_id_hash(&inode->id),
+ lttng_inode_match,
+ &inode->id,
+ &inode->registry_node);
LTTNG_ASSERT(node == &inode->registry_node);
end_unlock:
rcu_read_unlock();
projects / lttng-tools.git / blobdiff