X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ffd-tracker%2Ffd-tracker.h;h=504f92a3eed9b773254cd2823de4f4df7025eb49;hp=2ed385a2a0e4fc329ef833ff5e75dd6e39b53ffe;hb=938bd42282f0ba31bf22ad23b0bd3e04e848e052;hpb=f7c3ffd79ddcece895eb0de616001d549aced5fc diff --git a/src/common/fd-tracker/fd-tracker.h b/src/common/fd-tracker/fd-tracker.h index 2ed385a2a..504f92a3e 100644 --- a/src/common/fd-tracker/fd-tracker.h +++ b/src/common/fd-tracker/fd-tracker.h @@ -1,24 +1,15 @@ /* - * Copyright (C) 2018 - Jérémie Galarneau + * Copyright (C) 2018 Jérémie Galarneau * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License, version 2 only, as - * published by the Free Software Foundation. + * SPDX-License-Identifier: GPL-2.0-only * - * This program 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 General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 51 - * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef FD_TRACKER_H #define FD_TRACKER_H #include +#include #include #include @@ -58,10 +49,12 @@ typedef int (*fd_close_cb)(void *, int *in_fds); * under which unlinked files will be stored for as long as a reference to them * is held. */ +LTTNG_HIDDEN struct fd_tracker *fd_tracker_create(const char *unlinked_file_path, unsigned int capacity); /* Returns an error if file descriptors are leaked. */ +LTTNG_HIDDEN int fd_tracker_destroy(struct fd_tracker *tracker); /* @@ -86,6 +79,7 @@ int fd_tracker_destroy(struct fd_tracker *tracker); * (e.g. truncation) may react differently than if the file descriptor was kept * open. */ +LTTNG_HIDDEN struct fs_handle *fd_tracker_open_fs_handle(struct fd_tracker *tracker, struct lttng_directory_handle *directory, const char *path, @@ -114,6 +108,7 @@ struct fs_handle *fd_tracker_open_fs_handle(struct fd_tracker *tracker, * - EMFILE: too many unsuspendable fds are opened and the tracker can't * accomodate the request for a new unsuspendable entry. */ +LTTNG_HIDDEN int fd_tracker_open_unsuspendable_fd(struct fd_tracker *tracker, int *out_fds, const char **names, @@ -136,6 +131,7 @@ int fd_tracker_open_unsuspendable_fd(struct fd_tracker *tracker, * Closed fds are set to -1 in the fds array which, in the event of an error, * allows the user to know which file descriptors are no longer being tracked. */ +LTTNG_HIDDEN int fd_tracker_close_unsuspendable_fd(struct fd_tracker *tracker, int *fds, unsigned int fd_count, @@ -145,6 +141,7 @@ int fd_tracker_close_unsuspendable_fd(struct fd_tracker *tracker, /* * Log the contents of the fd_tracker. */ +LTTNG_HIDDEN void fd_tracker_log(struct fd_tracker *tracker); /* @@ -162,12 +159,14 @@ void fd_tracker_log(struct fd_tracker *tracker); * Returns the fd on success, otherwise a negative value may be returned * if the restoration of the fd failed. */ +LTTNG_HIDDEN int fs_handle_get_fd(struct fs_handle *handle); /* * Used by the application to signify that it is no longer using the * underlying fd and that it may be suspended. */ +LTTNG_HIDDEN void fs_handle_put_fd(struct fs_handle *handle); /* @@ -182,11 +181,13 @@ void fs_handle_put_fd(struct fs_handle *handle); * Returns 0 on success, otherwise a negative value will be returned * if the operation failed. */ +LTTNG_HIDDEN int fs_handle_unlink(struct fs_handle *handle); /* * Frees the handle and discards the underlying fd. */ +LTTNG_HIDDEN int fs_handle_close(struct fs_handle *handle); #endif /* FD_TRACKER_H */