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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
#ifndef COPY_H
# define COPY_H
/* Control creation of sparse files (files with holes). */
enum Sparse_type
{
SPARSE_UNUSED,
/* Never create holes in DEST. */
SPARSE_NEVER,
/* This is the default. Use a crude (and sometimes inaccurate)
heuristic to determine if SOURCE has holes. If so, try to create
holes in DEST. */
SPARSE_AUTO,
/* For every sufficiently long sequence of bytes in SOURCE, try to
create a corresponding hole in DEST. There is a performance penalty
here because CP has to search for holes in SRC. But if the holes are
big enough, that penalty can be offset by the decrease in the amount
of data written to disk. */
SPARSE_ALWAYS
};
enum Dereference_symlink
{
DEREF_UNDEFINED = 1,
DEREF_ALWAYS,
DEREF_NEVER,
DEREF_COMMAND_LINE_ARGUMENTS
};
# define VALID_SPARSE_MODE(Mode) \
((Mode) == SPARSE_NEVER \
|| (Mode) == SPARSE_AUTO \
|| (Mode) == SPARSE_ALWAYS)
struct cp_options
{
enum backup_type backup_type;
/* If nonzero, copy all files except (directories and, if not dereferencing
them, symbolic links,) as if they were regular files. */
int copy_as_regular;
/* If nonzero, dereference symbolic links (copy the files they point to). */
enum Dereference_symlink dereference;
/* If nonzero, remove each existing destination nondirectory before
trying to open it. */
int unlink_dest_before_opening;
/* If nonzero, first try to open each existing destination nondirectory,
then, if the open fails, unlink and try again.
This option must be set for `cp -f', in case the destination file
exists when the open is attempted. It is irrelevant to `mv' since
any destination is sure to be removed before the open. */
int unlink_dest_after_failed_open;
/* Setting this member is meaningful only if FORCE is also set.
If nonzero, copy returns nonzero upon failed unlink.
Otherwise, the failure still elicits a diagnostic, but it doesn't
change copy's return value. This is nonzero for cp and mv, and zero
for install. */
/* FIXME: this is now unused. */
int failed_unlink_is_fatal;
/* If nonzero, create hard links instead of copying files.
Create destination directories as usual. */
int hard_link;
/* If nonzero, query before overwriting existing destinations
with regular files. */
int interactive;
/* If nonzero, rather than copying, first attempt to use rename.
If that fails, then resort to copying. */
int move_mode;
/* This process's effective user ID. */
uid_t myeuid;
/* If nonzero, when copying recursively, skip any subdirectories that are
on different filesystems from the one we started on. */
int one_file_system;
/* If nonzero, attempt to give the copies the original files' permissions,
owner, group, and timestamps. */
int preserve_owner_and_group;
int preserve_chmod_bits;
int preserve_timestamps;
/* If nonzero and any of the above (for preserve) file attributes cannot
be applied to a destination file, treat it as a failure and return
nonzero immediately. E.g. cp -p requires this be nonzero, mv requires
it be zero. */
int require_preserve;
/* If nonzero, copy directories recursively and copy special files
as themselves rather than copying their contents. */
int recursive;
/* If nonzero, set file mode to value of MODE. Otherwise,
set it based on current umask modified by UMASK_KILL. */
int set_mode;
/* Set the mode of the destination file to exactly this value
if USE_MODE is nonzero. */
mode_t mode;
/* Control creation of sparse files. */
enum Sparse_type sparse_mode;
/* If nonzero, create symbolic links instead of copying files.
Create destination directories as usual. */
int symbolic_link;
/* The bits to preserve in created files' modes. */
mode_t umask_kill;
/* If nonzero, do not copy a nondirectory that has an existing destination
with the same or newer modification time. */
int update;
/* If nonzero, display the names of the files before copying them. */
int verbose;
/* A pointer to either lstat or stat, depending on
whether the copy should dereference symlinks. */
int (*xstat) ();
};
int stat ();
int lstat ();
/* Arrange to make lstat calls go through the wrapper function
on systems with an lstat function that does not dereference symlinks
that are specified with a trailing slash. */
# if ! LSTAT_FOLLOWS_SLASHED_SYMLINK
int rpl_lstat PARAMS((const char *, struct stat *));
# undef lstat
# define lstat rpl_lstat
# endif
int
copy PARAMS ((const char *src_path, const char *dst_path,
int nonexistent_dst, const struct cp_options *options,
int *copy_into_self, int *rename_succeeded));
#endif
|
