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32c21c76 1/*
faeb1b64
KZ
2 * No copyright is claimed. This code is in the public domain; do with
3 * it what you wish.
4 *
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5 * Copyright (C) 2021 Karel Zak <kzak@redhat.com>
6 */
7#ifndef UTIL_LINUX_PROCFS_H
8#define UTIL_LINUX_PROCFS_H
9
10
11#include <stdio.h>
12#include <stdlib.h>
13#include <unistd.h>
14#include <stdint.h>
15#include <sys/types.h>
16#include <sys/stat.h>
17#include <string.h>
18#include <inttypes.h>
19#include <dirent.h>
20
21#include "path.h"
22
23struct procfs_process {
24 pid_t pid;
25};
26
27extern void ul_procfs_init_debug(void);
28extern struct path_cxt *ul_new_procfs_path(pid_t pid, const char *prefix);
29extern int procfs_process_init_path(struct path_cxt *pc, pid_t pid);
30
31extern int procfs_process_get_uid(struct path_cxt *pc, uid_t *uid);
32extern ssize_t procfs_process_get_cmdline(struct path_cxt *pc, char *buf, size_t bufsz);
33extern ssize_t procfs_process_get_cmdname(struct path_cxt *pc, char *buf, size_t bufsz);
f26ddd08 34extern ssize_t procfs_process_get_stat(struct path_cxt *pc, char *buf, size_t bufsz);
32c21c76 35
c2ece66e 36extern int procfs_process_get_stat_nth(struct path_cxt *pc, int n, uintmax_t *re);
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37
38static inline ssize_t procfs_process_get_exe(struct path_cxt *pc, char *buf, size_t bufsz)
39{
40 return ul_path_readlink(pc, buf, bufsz, "exe");
41}
42
43static inline ssize_t procfs_process_get_root(struct path_cxt *pc, char *buf, size_t bufsz)
44{
45 return ul_path_readlink(pc, buf, bufsz, "root");
46}
47
48static inline ssize_t procfs_process_get_cwd(struct path_cxt *pc, char *buf, size_t bufsz)
49{
50 return ul_path_readlink(pc, buf, bufsz, "cwd");
51}
52
53extern int procfs_process_next_tid(struct path_cxt *pc, DIR **sub, pid_t *tid);
54extern int procfs_process_next_fd(struct path_cxt *pc, DIR **sub, int *fd);
55
56extern int procfs_dirent_is_process(struct dirent *d);
57extern int procfs_dirent_get_pid(struct dirent *d, pid_t *pid);
58extern int procfs_dirent_get_uid(DIR *procfs, struct dirent *d, uid_t *uid);
59extern int procfs_dirent_match_uid(DIR *procfs, struct dirent *d, uid_t uid);
60extern int procfs_dirent_get_name(DIR *procfs, struct dirent *d, char *buf, size_t bufsz);
61extern int procfs_dirent_match_name(DIR *procfs, struct dirent *d, const char *name);
62
63extern int fd_is_procfs(int fd);
64extern char *pid_get_cmdname(pid_t pid);
65extern char *pid_get_cmdline(pid_t pid);
66
67#endif /* UTIL_LINUX_PROCFS_H */