mirror of
https://github.com/libfuse/libfuse.git
synced 2026-07-07 14:47:41 +08:00
Bernd Schubert
d07e5f3668
This makes use of the bidirectional fusermount. Added is doc/README.mount, which explains the new bidirectional communication with fusermount. Signed-off-by: Bernd Schubert <bschubert@ddn.com>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*
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* FUSE: Filesystem in Userspace
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* Copyright (C) 2026 Bernd Schubert <bsbernd.com>
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*
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* This program can be distributed under the terms of the GNU LGPLv2.
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* See the file COPYING.LIB.
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*
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*/
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#ifndef FUSE_DAEMONIZE_H_
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#define FUSE_DAEMONIZE_H_
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Flags for fuse_daemonize_start()
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*/
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#define FUSE_DAEMONIZE_NO_CHDIR (1 << 0)
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#define FUSE_DAEMONIZE_NO_BACKGROUND (1 << 1)
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/**
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* Start daemonization process.
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*
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* Unless FUSE_DAEMONIZE_NO_BACKGROUND is set, this forks the process.
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* The parent waits for a signal from the child via fuse_daemonize_success()
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* or fuse_daemonize_fail().
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* The child returns from this call and continues setup.
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*
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* Unless FUSE_DAEMONIZE_NO_CHDIR is set, changes directory to "/".
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*
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* Must be called before fuse_session_mount().
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*
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* @param flags combination of FUSE_DAEMONIZE_* flags
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* @return 0 on success, negative errno on error
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*/
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int fuse_daemonize_early_start(unsigned int flags);
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/**
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* Signal daemonization success to parent and cleanup.
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*
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* To be called from the child process after a successful mount, when
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* synchronous FUSE_INIT is used (FUSE_INIT as part of the mount).
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*
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* Automatically called for async FUSE_INIT.
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*
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*/
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void fuse_daemonize_early_success(void);
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/**
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*
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* Note: For synchronous FUSE_INIT, this must be called after
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* fuse_session_mount() and before the first call to
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* fuse_session_loop*(). For asynchronous FUSE_INIT, this should
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* be called in the file system ->init() callback.
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*
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* In order to simplify application code, this should be called from
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* the file system ->init() callback *and* after fuse_session_mount.
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* Libfuse knows internally if this is a sync or async FUSE_INIT
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* and will only signal the parent if the mount was completed.
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* Signal daemonization failure to parent and cleanup.
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*
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* To be called from the child process on any kind of error.
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*
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* @param err Error code passed to the parent and used as process exit code.
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*/
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void fuse_daemonize_early_fail(int err);
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/**
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* Check if daemonization is active and waiting for signal.
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*
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* Can be called from the child process to check state of daemonization.
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*
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* @return true if active, false otherwise
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*/
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bool fuse_daemonize_early_is_active(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FUSE_DAEMONIZE_H_ */
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