1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* pseudo_client.h, shared declarations for client
*
* Copyright (c) 2008-2010 Wind River Systems, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Lesser GNU General Public License version 2.1 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the Lesser GNU General Public License for more details.
*
* You should have received a copy of the Lesser GNU General Public License
* version 2.1 along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
extern pseudo_msg_t *pseudo_client_op(op_id_t op, int fd, int dirfd, const char *path, const struct stat64 *buf, ...);
extern void pseudo_antimagic(void);
extern void pseudo_magic(void);
extern void pseudo_client_reset(void);
extern void pseudo_client_touchuid(void);
extern void pseudo_client_touchgid(void);
extern char *pseudo_client_fdpath(int fd);
extern int pseudo_client_shutdown(void);
extern int pseudo_fd(int fd, int how);
extern void pseudo_stat32_from64(struct stat *, struct stat64 *);
extern void pseudo_stat64_from32(struct stat64 *, struct stat *);
#define MOVE_FD 0
#define COPY_FD 1
#define PSEUDO_MIN_FD 20
extern int pseudo_euid;
extern int pseudo_fuid;
extern int pseudo_suid;
extern int pseudo_ruid;
extern int pseudo_egid;
extern int pseudo_sgid;
extern int pseudo_rgid;
extern int pseudo_fgid;
extern int pseudo_dir_fd;
/* support related to chroot/getcwd/etc. */
extern int pseudo_client_getcwd(void);
extern char *pseudo_root_path(const char *, int, int, const char *, int);
#define PSEUDO_ROOT_PATH(x, y, z) pseudo_root_path(__func__, __LINE__, (x), (y), (z));
extern char *pseudo_cwd;
extern size_t pseudo_cwd_len;
/* Root can read, write, and execute files which have no read, write,
* or execute permissions.
*
* A non-root user can't.
*
* When doing anything which actually writes to the filesystem, we add in
* the user read/write/execute bits. When storing to the database, though,
* we mask out any such bits which weren't in the original mode.
*
* None of this will behave very sensibly if umask has 0700 bits in it;
* this is a known limitation.
*/
#define PSEUDO_FS_MODE(mode) ((mode) | S_IRUSR | S_IWUSR | S_IXUSR)
#define PSEUDO_DB_MODE(fs_mode, user_mode) (((fs_mode) & ~0700) | ((user_mode & 0700)))
/* some systems might not have *at(). We like to define operations in
* terms of each other, and for instance, open(...) is the same as
* openat(AT_FDCWD, ...). If no AT_FDCWD is provided, any value that can't
* be a valid file descriptor will do. Using -2 because -1 could be
* mistaken for a failed syscall return. Similarly, any value which isn't
* zero will do to fake AT_SYMLINK_NOFOLLOW. Finally, if this happened,
* we set our own flag we can use to indicate that dummy implementations
* of the _at functions are needed.
*/
#ifndef AT_FDCWD
#define AT_FDCWD -2
#define AT_SYMLINK_NOFOLLOW 1
#define PSEUDO_NO_REAL_AT_FUNCTIONS
#endif
/* Likewise, someone might not have O_LARGEFILE (the flag equivalent to
* using open64()). Since open64() is the same as O_LARGEFILE in flags,
* we implement it that way... If the system has no O_LARGEFILE, we'll
* just call open() with nothing special.
*/
#ifndef O_LARGEFILE
#define O_LARGEFILE 0
#endif
|
