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Commit | Line | Data |
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1 | #include <stdio.h> | |
2 | #include <config.h> | |
3 | ||
4 | #include "transformation.h" | |
5 | ||
6 | /* | |
7 | * Initialize | |
8 | */ | |
9 | static int | |
10 | null_initialize(Transformation *xform, int enc) | |
11 | { | |
12 | return 0; | |
13 | } | |
14 | ||
15 | /* | |
16 | * Shut down. | |
17 | */ | |
18 | static int | |
19 | null_shutdown(Transformation *xform) | |
20 | { | |
21 | return 0; | |
22 | } | |
23 | ||
24 | /* | |
25 | * Handle fork. | |
26 | */ | |
27 | static int | |
28 | null_startNewTape(Transformation *xform, struct tapebuf *tpbin, | |
29 | unsigned long *destlen) | |
30 | { | |
31 | return 0; | |
32 | } | |
33 | ||
34 | /* | |
35 | * Start slave process. | |
36 | */ | |
37 | static int | |
38 | null_startDiskIOProcess(Transformation *xform) | |
39 | { | |
40 | return 0; | |
41 | } | |
42 | ||
43 | /* | |
44 | * End slave process. | |
45 | */ | |
46 | static int | |
47 | null_endDiskIOProcess(Transformation *xform) | |
48 | { | |
49 | return 0; | |
50 | } | |
51 | ||
52 | /* | |
53 | * Compress a buffer. | |
54 | */ | |
55 | static int | |
56 | null_compress(Transformation *xform, struct tapebuf *tpbin, unsigned long *destlen, | |
57 | const char *src, int srclen) | |
58 | { | |
59 | memcpy(tpbin->buf, src, srclen); | |
60 | *destlen = srclen; | |
61 | ||
62 | return 1; | |
63 | } | |
64 | ||
65 | /* | |
66 | * Decompress a buffer. | |
67 | */ | |
68 | static int | |
69 | null_decompress(Transformation *xform, struct tapebuf *tpbin, unsigned long *destlen, | |
70 | const char *src, int srclen, char **reason) | |
71 | { | |
72 | memcpy(tpbin->buf, src, srclen); | |
73 | *destlen = srclen; | |
74 | ||
75 | return 1; | |
76 | } | |
77 | ||
78 | /* | |
79 | * | |
80 | */ | |
81 | Transformation transformation_null = | |
82 | { | |
83 | 0, | |
84 | NULL, | |
85 | "null", | |
86 | 0, | |
87 | &null_initialize, | |
88 | &null_shutdown, | |
89 | &null_startNewTape, | |
90 | &null_startDiskIOProcess, | |
91 | &null_endDiskIOProcess, | |
92 | &null_compress, | |
93 | &null_decompress | |
94 | }; |