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Commit | Line | Data |
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c38138cd LT |
1 | #ifndef CSUM_FILE_H |
2 | #define CSUM_FILE_H | |
3 | ||
d1cbe1e6 | 4 | #include "hash-ll.h" |
d48be35c | 5 | #include "write-or-die.h" |
ef3ca954 | 6 | |
2a128d63 NP |
7 | struct progress; |
8 | ||
c38138cd | 9 | /* A SHA1-protected file */ |
98a3beab | 10 | struct hashfile { |
ec640ed1 | 11 | int fd; |
e337a04d | 12 | int check_fd; |
ec640ed1 | 13 | unsigned int offset; |
4d273500 | 14 | git_hash_ctx ctx; |
218558af | 15 | off_t total; |
2a128d63 | 16 | struct progress *tp; |
ec640ed1 | 17 | const char *name; |
78d1e84f NP |
18 | int do_crc; |
19 | uint32_t crc32; | |
2ca245f8 DS |
20 | size_t buffer_len; |
21 | unsigned char *buffer; | |
22 | unsigned char *check_buffer; | |
1687150b DS |
23 | |
24 | /** | |
25 | * If non-zero, skip_hash indicates that we should | |
26 | * not actually compute the hash for this hashfile and | |
27 | * instead only use it as a buffered write. | |
28 | */ | |
29 | int skip_hash; | |
c38138cd LT |
30 | }; |
31 | ||
6c526148 | 32 | /* Checkpoint */ |
98a3beab | 33 | struct hashfile_checkpoint { |
6c526148 | 34 | off_t offset; |
4d273500 | 35 | git_hash_ctx ctx; |
6c526148 JH |
36 | }; |
37 | ||
55454427 DL |
38 | void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *); |
39 | int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *); | |
6c526148 | 40 | |
f2af9f5e | 41 | /* finalize_hashfile flags */ |
cfe83216 DS |
42 | #define CSUM_CLOSE 1 |
43 | #define CSUM_FSYNC 2 | |
44 | #define CSUM_HASH_IN_STREAM 4 | |
4c81b03e | 45 | |
55454427 DL |
46 | struct hashfile *hashfd(int fd, const char *name); |
47 | struct hashfile *hashfd_check(const char *name); | |
48 | struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp); | |
020406ea | 49 | int finalize_hashfile(struct hashfile *, unsigned char *, enum fsync_component, unsigned int); |
55454427 DL |
50 | void hashwrite(struct hashfile *, const void *, unsigned int); |
51 | void hashflush(struct hashfile *f); | |
52 | void crc32_begin(struct hashfile *); | |
53 | uint32_t crc32_end(struct hashfile *); | |
c38138cd | 54 | |
f9221e2c TB |
55 | /* Verify checksum validity while reading. Returns non-zero on success. */ |
56 | int hashfile_checksum_valid(const unsigned char *data, size_t len); | |
57 | ||
2f4af776 JK |
58 | /* |
59 | * Returns the total number of bytes fed to the hashfile so far (including ones | |
60 | * that have not been written out to the descriptor yet). | |
61 | */ | |
62 | static inline off_t hashfile_total(struct hashfile *f) | |
63 | { | |
64 | return f->total + f->offset; | |
65 | } | |
66 | ||
98a3beab | 67 | static inline void hashwrite_u8(struct hashfile *f, uint8_t data) |
b5007211 | 68 | { |
98a3beab | 69 | hashwrite(f, &data, sizeof(data)); |
b5007211 KB |
70 | } |
71 | ||
98a3beab | 72 | static inline void hashwrite_be32(struct hashfile *f, uint32_t data) |
b5007211 KB |
73 | { |
74 | data = htonl(data); | |
98a3beab | 75 | hashwrite(f, &data, sizeof(data)); |
b5007211 KB |
76 | } |
77 | ||
54273d10 RS |
78 | static inline size_t hashwrite_be64(struct hashfile *f, uint64_t data) |
79 | { | |
80 | data = htonll(data); | |
81 | hashwrite(f, &data, sizeof(data)); | |
82 | return sizeof(data); | |
83 | } | |
84 | ||
c38138cd | 85 | #endif |