summaryrefslogtreecommitdiffstats
path: root/misc-utils/lsfd.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--misc-utils/lsfd.h160
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 */