virtiofsd: Pull in upstream headers

Pull in headers fromlibfuse's upstream fuse-3.8.0

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

tools/virtiofsd/fuse_i.h

@@ -0,0 +1,139 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
+
+  This program can be distributed under the terms of the GNU LGPLv2.
+  See the file COPYING.LIB
+*/
+
+#include "fuse.h"
+#include "fuse_lowlevel.h"
+
+struct mount_opts;
+
+struct fuse_req {
+	struct fuse_session *se;
+	uint64_t unique;
+	int ctr;
+	pthread_mutex_t lock;
+	struct fuse_ctx ctx;
+	struct fuse_chan *ch;
+	int interrupted;
+	unsigned int ioctl_64bit : 1;
+	union {
+		struct {
+			uint64_t unique;
+		} i;
+		struct {
+			fuse_interrupt_func_t func;
+			void *data;
+		} ni;
+	} u;
+	struct fuse_req *next;
+	struct fuse_req *prev;
+};
+
+struct fuse_notify_req {
+	uint64_t unique;
+	void (*reply)(struct fuse_notify_req *, fuse_req_t, fuse_ino_t,
+		      const void *, const struct fuse_buf *);
+	struct fuse_notify_req *next;
+	struct fuse_notify_req *prev;
+};
+
+struct fuse_session {
+	char *mountpoint;
+	volatile int exited;
+	int fd;
+	struct mount_opts *mo;
+	int debug;
+	int deny_others;
+	struct fuse_lowlevel_ops op;
+	int got_init;
+	struct cuse_data *cuse_data;
+	void *userdata;
+	uid_t owner;
+	struct fuse_conn_info conn;
+	struct fuse_req list;
+	struct fuse_req interrupts;
+	pthread_mutex_t lock;
+	int got_destroy;
+	pthread_key_t pipe_key;
+	int broken_splice_nonblock;
+	uint64_t notify_ctr;
+	struct fuse_notify_req notify_list;
+	size_t bufsize;
+	int error;
+};
+
+struct fuse_chan {
+	pthread_mutex_t lock;
+	int ctr;
+	int fd;
+};
+
+/**
+ * Filesystem module
+ *
+ * Filesystem modules are registered with the FUSE_REGISTER_MODULE()
+ * macro.
+ *
+ */
+struct fuse_module {
+	char *name;
+	fuse_module_factory_t factory;
+	struct fuse_module *next;
+	struct fusemod_so *so;
+	int ctr;
+};
+
+/* ----------------------------------------------------------- *
+ * Channel interface (when using -o clone_fd)		       *
+ * ----------------------------------------------------------- */
+
+/**
+ * Obtain counted reference to the channel
+ *
+ * @param ch the channel
+ * @return the channel
+ */
+struct fuse_chan *fuse_chan_get(struct fuse_chan *ch);
+
+/**
+ * Drop counted reference to a channel
+ *
+ * @param ch the channel
+ */
+void fuse_chan_put(struct fuse_chan *ch);
+
+struct mount_opts *parse_mount_opts(struct fuse_args *args);
+void destroy_mount_opts(struct mount_opts *mo);
+void fuse_mount_version(void);
+unsigned get_max_read(struct mount_opts *o);
+void fuse_kern_unmount(const char *mountpoint, int fd);
+int fuse_kern_mount(const char *mountpoint, struct mount_opts *mo);
+
+int fuse_send_reply_iov_nofree(fuse_req_t req, int error, struct iovec *iov,
+			       int count);
+void fuse_free_req(fuse_req_t req);
+
+void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeide, const void *inarg);
+
+int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg);
+
+int fuse_session_receive_buf_int(struct fuse_session *se, struct fuse_buf *buf,
+				 struct fuse_chan *ch);
+void fuse_session_process_buf_int(struct fuse_session *se,
+				  const struct fuse_buf *buf, struct fuse_chan *ch);
+
+struct fuse *fuse_new_31(struct fuse_args *args, const struct fuse_operations *op,
+		      size_t op_size, void *private_data);
+int fuse_loop_mt_32(struct fuse *f, struct fuse_loop_config *config);
+int fuse_session_loop_mt_32(struct fuse_session *se, struct fuse_loop_config *config);
+
+#define FUSE_MAX_MAX_PAGES 256
+#define FUSE_DEFAULT_MAX_PAGES_PER_REQ 32
+
+/* room needed in buffer to accommodate header */
+#define FUSE_BUFFER_HEADER_SIZE 0x1000
+

tools/virtiofsd/fuse_log.h

@@ -0,0 +1,82 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2019  Red Hat, Inc.
+
+  This program can be distributed under the terms of the GNU LGPLv2.
+  See the file COPYING.LIB.
+*/
+
+#ifndef FUSE_LOG_H_
+#define FUSE_LOG_H_
+
+/** @file
+ *
+ * This file defines the logging interface of FUSE
+ */
+
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Log severity level
+ *
+ * These levels correspond to syslog(2) log levels since they are widely used.
+ */
+enum fuse_log_level {
+	FUSE_LOG_EMERG,
+	FUSE_LOG_ALERT,
+	FUSE_LOG_CRIT,
+	FUSE_LOG_ERR,
+	FUSE_LOG_WARNING,
+	FUSE_LOG_NOTICE,
+	FUSE_LOG_INFO,
+	FUSE_LOG_DEBUG
+};
+
+/**
+ * Log message handler function.
+ *
+ * This function must be thread-safe.  It may be called from any libfuse
+ * function, including fuse_parse_cmdline() and other functions invoked before
+ * a FUSE filesystem is created.
+ *
+ * Install a custom log message handler function using fuse_set_log_func().
+ *
+ * @param level log severity level
+ * @param fmt sprintf-style format string including newline
+ * @param ap format string arguments
+ */
+typedef void (*fuse_log_func_t)(enum fuse_log_level level,
+				const char *fmt, va_list ap);
+
+/**
+ * Install a custom log handler function.
+ *
+ * Log messages are emitted by libfuse functions to report errors and debug
+ * information.  Messages are printed to stderr by default but this can be
+ * overridden by installing a custom log message handler function.
+ *
+ * The log message handler function is global and affects all FUSE filesystems
+ * created within this process.
+ *
+ * @param func a custom log message handler function or NULL to revert to
+ *             the default
+ */
+void fuse_set_log_func(fuse_log_func_t func);
+
+/**
+ * Emit a log message
+ *
+ * @param level severity level (FUSE_LOG_ERR, FUSE_LOG_DEBUG, etc)
+ * @param fmt sprintf-style format string including newline
+ */
+void fuse_log(enum fuse_log_level level, const char *fmt, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* FUSE_LOG_H_ */