do_for_each_ref: perform the same sanity check for leftovers.
[git/git.git] / refs.h
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1#ifndef REFS_H
2#define REFS_H
3
4bd18c43 4struct ref_lock {
434cd0cd 5 char *ref_name;
6de08ae6 6 char *log_file;
c33d5174 7 struct lock_file *lk;
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8 unsigned char old_sha1[20];
9 int lock_fd;
732232a1 10 int force_write;
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11};
12
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13/*
14 * Calls the specified function for each ref file until it returns nonzero,
15 * and returns the value
16 */
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17#define REF_ISSYMREF 01
18#define REF_ISPACKED 02
19typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
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20extern int head_ref(each_ref_fn, void *);
21extern int for_each_ref(each_ref_fn, void *);
22extern int for_each_tag_ref(each_ref_fn, void *);
23extern int for_each_branch_ref(each_ref_fn, void *);
24extern int for_each_remote_ref(each_ref_fn, void *);
8a65ff76 25
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26/** Reads the refs file specified into sha1 **/
27extern int get_ref_sha1(const char *ref, unsigned char *sha1);
28
4bd18c43 29/** Locks a "refs/" ref returning the lock on success and NULL on failure. **/
4431fcc4 30extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
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31
32/** Locks any ref (for 'HEAD' type refs). */
4431fcc4 33extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1);
95fc7512 34
4bd18c43 35/** Release any lock taken but not written. **/
e5f38ec3 36extern void unlock_ref(struct ref_lock *lock);
95fc7512 37
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38/** Writes sha1 into the ref specified by the lock. **/
39extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
95fc7512 40
d556fae2 41/** Reads log for the value of ref during at_time. **/
ab2a1a32 42extern int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1);
d556fae2 43
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44/** Returns 0 if target has the right format for a ref. **/
45extern int check_ref_format(const char *target);
46
47#endif /* REFS_H */