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