Root/fakefile/fakefile.h

1/*
2 * fakefile.h - Programmed file system illusion
3 *
4 * Copyright 2012 by Werner Almesberger
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#ifndef FAKEFILE_H
13#define FAKEFILE_H
14
15#include <sys/types.h>
16#include <sys/stat.h>
17
18
19enum fakefile_event_type {
20    ff_et_exit,
21    ff_et_open,
22    ff_et_read,
23    ff_et_write,
24    ff_et_close,
25    ff_et_unlink,
26    ff_et_rename,
27    ff_et_fstat,
28};
29
30struct fakefile_event {
31    enum fakefile_event_type type;
32    union {
33        struct fakefile_exit {
34            /* in */
35            int status;
36        } exit;
37        struct fakefile_open {
38            /* in */
39            char *name;
40            int flags;
41            int mode;
42            /* out */
43            void *handle;
44            int res; /* < 0: -errno; 0: regular open (in slave) */
45        } open;
46        struct fakefile_read {
47            /* in */
48            const void *handle;
49            /* in/out */
50            void *buf;
51            ssize_t len;
52        } read;
53        struct fakefile_write {
54            /* in */
55            const void *handle;
56            void *buf;
57            /* in/out */
58            ssize_t len;
59        } write;
60        struct fakefile_close {
61            /* in */
62            const void *handle;
63            /* out */
64            int res;
65        } close;
66        struct fakefile_unlink {
67        } unlink;
68        struct fakefile_rename {
69        } rename;
70        struct fakefile_fstat {
71            /* in */
72            const void *handle;
73            /* out */
74            struct stat st;
75            int res;
76        } fstat;
77    } u;
78    void *user;
79};
80
81
82struct fakefile *fakefile_execv(const char *path, char *const argv[]);
83struct fakefile_event *fakefile_poll(void);
84void fakefile_respond(struct fakefile_event *event);
85void fakefile_end(struct fakefile *ff);
86
87void fakefile_file(struct fakefile *ff, const char *name,
88    const void *in, size_t len, void **out);
89void fakefile_antifile(struct fakefile *ff, const char *name);
90
91#endif /* !FAKEFILE_H */
92

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