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Commit | Line | Data |
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95fc7512 DB |
1 | #ifndef REFS_H |
2 | #define REFS_H | |
3 | ||
4bd18c43 | 4 | struct ref_lock { |
434cd0cd | 5 | char *ref_name; |
1655707c | 6 | char *orig_ref_name; |
c33d5174 | 7 | struct lock_file *lk; |
4bd18c43 SP |
8 | unsigned char old_sha1[20]; |
9 | int lock_fd; | |
732232a1 | 10 | int force_write; |
4bd18c43 SP |
11 | }; |
12 | ||
f4204ab9 JH |
13 | #define REF_ISSYMREF 01 |
14 | #define REF_ISPACKED 02 | |
15 | ||
8a65ff76 LT |
16 | /* |
17 | * Calls the specified function for each ref file until it returns nonzero, | |
18 | * and returns the value | |
19 | */ | |
8da19775 | 20 | typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data); |
cb5d709f JH |
21 | extern int head_ref(each_ref_fn, void *); |
22 | extern int for_each_ref(each_ref_fn, void *); | |
23 | extern int for_each_tag_ref(each_ref_fn, void *); | |
24 | extern int for_each_branch_ref(each_ref_fn, void *); | |
25 | extern int for_each_remote_ref(each_ref_fn, void *); | |
8a65ff76 | 26 | |
e142a3c6 DB |
27 | /* |
28 | * Extra refs will be listed by for_each_ref() before any actual refs | |
29 | * for the duration of this process or until clear_extra_refs() is | |
30 | * called. Only extra refs added before for_each_ref() is called will | |
31 | * be listed on a given call of for_each_ref(). | |
32 | */ | |
33 | extern void add_extra_ref(const char *refname, const unsigned char *sha1, int flags); | |
34 | extern void clear_extra_refs(void); | |
35 | ||
cf0adba7 JH |
36 | extern int peel_ref(const char *, unsigned char *); |
37 | ||
4bd18c43 | 38 | /** Locks a "refs/" ref returning the lock on success and NULL on failure. **/ |
4431fcc4 | 39 | extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1); |
4bd18c43 SP |
40 | |
41 | /** Locks any ref (for 'HEAD' type refs). */ | |
68db31cc SV |
42 | #define REF_NODEREF 0x01 |
43 | extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags); | |
95fc7512 | 44 | |
435fc852 BC |
45 | /** Close the file descriptor owned by a lock and return the status */ |
46 | extern int close_ref(struct ref_lock *lock); | |
47 | ||
48 | /** Close and commit the ref locked by the lock */ | |
49 | extern int commit_ref(struct ref_lock *lock); | |
50 | ||
4bd18c43 | 51 | /** Release any lock taken but not written. **/ |
e5f38ec3 | 52 | extern void unlock_ref(struct ref_lock *lock); |
95fc7512 | 53 | |
4bd18c43 SP |
54 | /** Writes sha1 into the ref specified by the lock. **/ |
55 | extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg); | |
95fc7512 | 56 | |
d556fae2 | 57 | /** Reads log for the value of ref during at_time. **/ |
16d7cc90 | 58 | extern int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt); |
d556fae2 | 59 | |
2ff81662 | 60 | /* iterate over reflog entries */ |
883d60fa JS |
61 | typedef int each_reflog_ent_fn(unsigned char *osha1, unsigned char *nsha1, const char *, unsigned long, int, const char *, void *); |
62 | int for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data); | |
2ff81662 | 63 | |
eb8381c8 NP |
64 | /* |
65 | * Calls the specified function for each reflog file until it returns nonzero, | |
66 | * and returns the value | |
67 | */ | |
68 | extern int for_each_reflog(each_ref_fn, void *); | |
69 | ||
5f7b202a JH |
70 | #define CHECK_REF_FORMAT_OK 0 |
71 | #define CHECK_REF_FORMAT_ERROR (-1) | |
72 | #define CHECK_REF_FORMAT_ONELEVEL (-2) | |
73 | #define CHECK_REF_FORMAT_WILDCARD (-3) | |
95fc7512 DB |
74 | extern int check_ref_format(const char *target); |
75 | ||
c976d415 | 76 | /** rename ref, return 0 on success **/ |
678d0f4c | 77 | extern int rename_ref(const char *oldref, const char *newref, const char *logmsg); |
c976d415 | 78 | |
0ebde32c LT |
79 | /** resolve ref in nested "gitlink" repository */ |
80 | extern int resolve_gitlink_ref(const char *name, const char *refname, unsigned char *result); | |
81 | ||
3d9f037c CR |
82 | /** lock a ref and then write its file */ |
83 | enum action_on_err { MSG_ON_ERR, DIE_ON_ERR, QUIET_ON_ERR }; | |
84 | int update_ref(const char *action, const char *refname, | |
85 | const unsigned char *sha1, const unsigned char *oldval, | |
86 | int flags, enum action_on_err onerr); | |
87 | ||
95fc7512 | 88 | #endif /* REFS_H */ |