1 files changed, 160 insertions, 0 deletions
diff --git a/misc-utils/lsfd.h b/misc-utils/lsfd.h
new file mode 100644
index 0000000..bcee186
--- /dev/null
+++ b/misc-utils/lsfd.h
@@ -0,0 +1,160 @@
+/*
+ * lsfd(1) - list file descriptors
+ *
+ * Copyright (C) 2021 Red Hat, Inc. All rights reserved.
+ * Written by Masatake YAMATO <yamato@redhat.com>
+ *
+ * Very generally based on lsof(8) by Victor A. Abell <abe@purdue.edu>
+ * It supports multiple OSes. lsfd specializes to Linux.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef UTIL_LINUX_LSFD_H
+#define UTIL_LINUX_LSFD_H
+
+#include <stdbool.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <inttypes.h>
+
+#include "list.h"
+
+/*
+ * column IDs
+ */
+enum {
+	COL_ASSOC,
+	COL_BLKDRV,
+	COL_CHRDRV,
+	COL_COMMAND,
+	COL_DELETED,
+	COL_DEV,
+	COL_DEVTYPE,
+	COL_FD,
+	COL_FLAGS,
+	COL_INODE,
+	COL_KTHREAD,
+	COL_MAJMIN,
+	COL_MAPLEN,
+	COL_MISCDEV,
+	COL_MNT_ID,
+	COL_MODE,
+	COL_NAME,
+	COL_NLINK,
+	COL_PARTITION,
+	COL_PID,
+	COL_POS,
+	COL_PROTONAME,
+	COL_RDEV,
+	COL_SIZE,
+	COL_SOURCE,
+	COL_TID,
+	COL_TYPE,
+	COL_UID,		/* process */
+	COL_USER,		/* process */
+	COL_FUID,		/* file */
+	COL_OWNER,		/* file */
+	LSFD_N_COLS		/* This must be at last. */
+};
+
+/*
+ * Process structure
+ */
+enum association {
+	ASSOC_EXE = 1,
+	ASSOC_CWD,
+	ASSOC_ROOT,
+	ASSOC_NS_CGROUP,
+	ASSOC_NS_IPC,
+	ASSOC_NS_MNT,
+	ASSOC_NS_NET,
+	ASSOC_NS_PID,
+	ASSOC_NS_PID4C,
+	ASSOC_NS_TIME,
+	ASSOC_NS_TIME4C,
+	ASSOC_NS_USER,
+	ASSOC_NS_UTS,
+	ASSOC_MEM,		/* private file mapping */
+	ASSOC_SHM,		/* shared file mapping */
+	N_ASSOCS,
+};
+
+struct proc {
+	pid_t pid;
+	struct proc * leader;
+	char *command;
+	uid_t uid;
+	ino_t ns_mnt;
+	struct list_head procs;
+	struct list_head files;
+	unsigned int kthread: 1;
+};
+
+/*
+ * File class
+ */
+struct file {
+	struct list_head files;
+	const struct file_class *class;
+	int association;
+	char *name;
+	struct stat stat;
+	mode_t mode;
+	struct proc *proc;
+
+	uint64_t pos;
+	uint64_t map_start;
+	uint64_t map_end;
+
+	unsigned int sys_flags;
+	unsigned int mnt_id;
+};
+
+#define is_association(_f, a)	((_f)->association < 0 && (_f)->association == -ASSOC_ ## a)
+
+struct file_class {
+	const struct file_class *super;
+	size_t size;
+	void (*initialize_class)(void);
+	void (*finalize_class)(void);
+	bool (*fill_column)(struct proc *proc,
+			    struct file *file,
+			    struct libscols_line *ln,
+			    int column_id,
+			    size_t column_index);
+	int  (*handle_fdinfo)(struct file *file, const char *key, const char* value);
+	void (*initialize_content)(struct file *file);
+	void (*free_content)(struct file *file);
+};
+
+extern const struct file_class file_class, cdev_class, bdev_class, sock_class, unkn_class, fifo_class;
+
+/*
+ * Name managing
+ */
+struct name_manager;
+
+struct name_manager *new_name_manager(void);
+void free_name_manager(struct name_manager *nm);
+const char *get_name(struct name_manager *nm, unsigned long id);
+unsigned long add_name(struct name_manager *nm, const char *name);
+
+const char *get_partition(dev_t dev);
+const char *get_blkdrv(unsigned long major);
+const char *get_chrdrv(unsigned long major);
+const char *get_miscdev(unsigned long minor);
+const char *get_nodev_filesystem(unsigned long minor);
+
+#endif /* UTIL_LINUX_LSFD_H */