From e3688bd6cf159f6026a6bca7a6f53d0a22fe21a2 Mon Sep 17 00:00:00 2001 From: David Turner Date: Sun, 4 Sep 2016 18:08:38 +0200 Subject: refs: add methods for reflog In the file-based backend, the reflog piggybacks on the ref lock. Since other backends won't have the same sort of ref lock, ref backends must also handle reflogs. Signed-off-by: Ronnie Sahlberg Signed-off-by: David Turner Signed-off-by: Junio C Hamano Signed-off-by: Michael Haggerty Signed-off-by: Junio C Hamano --- refs/files-backend.c | 70 +++++++++++++++++++++++++++++++++++++--------------- refs/refs-internal.h | 44 +++++++++++++++++++++++++++------ 2 files changed, 87 insertions(+), 27 deletions(-) (limited to 'refs') diff --git a/refs/files-backend.c b/refs/files-backend.c index 2cda511352..336d432572 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -2777,11 +2777,16 @@ static int log_ref_setup(const char *refname, struct strbuf *logfile, struct str } -int safe_create_reflog(const char *refname, int force_create, struct strbuf *err) +static int files_create_reflog(struct ref_store *ref_store, + const char *refname, int force_create, + struct strbuf *err) { int ret; struct strbuf sb = STRBUF_INIT; + /* Check validity (but we don't need the result): */ + files_downcast(ref_store, 0, "create_reflog"); + ret = log_ref_setup(refname, &sb, err, force_create); strbuf_release(&sb); return ret; @@ -3075,16 +3080,24 @@ int set_worktree_head_symref(const char *gitdir, const char *target) return ret; } -int reflog_exists(const char *refname) +static int files_reflog_exists(struct ref_store *ref_store, + const char *refname) { struct stat st; + /* Check validity (but we don't need the result): */ + files_downcast(ref_store, 0, "reflog_exists"); + return !lstat(git_path("logs/%s", refname), &st) && S_ISREG(st.st_mode); } -int delete_reflog(const char *refname) +static int files_delete_reflog(struct ref_store *ref_store, + const char *refname) { + /* Check validity (but we don't need the result): */ + files_downcast(ref_store, 0, "delete_reflog"); + return remove_path(git_path("logs/%s", refname)); } @@ -3127,13 +3140,19 @@ static char *find_beginning_of_line(char *bob, char *scan) return scan; } -int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void *cb_data) +static int files_for_each_reflog_ent_reverse(struct ref_store *ref_store, + const char *refname, + each_reflog_ent_fn fn, + void *cb_data) { struct strbuf sb = STRBUF_INIT; FILE *logfp; long pos; int ret = 0, at_tail = 1; + /* Check validity (but we don't need the result): */ + files_downcast(ref_store, 0, "for_each_reflog_ent_reverse"); + logfp = fopen(git_path("logs/%s", refname), "r"); if (!logfp) return -1; @@ -3229,12 +3248,17 @@ int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void return ret; } -int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void *cb_data) +static int files_for_each_reflog_ent(struct ref_store *ref_store, + const char *refname, + each_reflog_ent_fn fn, void *cb_data) { FILE *logfp; struct strbuf sb = STRBUF_INIT; int ret = 0; + /* Check validity (but we don't need the result): */ + files_downcast(ref_store, 0, "for_each_reflog_ent"); + logfp = fopen(git_path("logs/%s", refname), "r"); if (!logfp) return -1; @@ -3313,22 +3337,19 @@ static struct ref_iterator_vtable files_reflog_iterator_vtable = { files_reflog_iterator_abort }; -struct ref_iterator *files_reflog_iterator_begin(void) +static struct ref_iterator *files_reflog_iterator_begin(struct ref_store *ref_store) { struct files_reflog_iterator *iter = xcalloc(1, sizeof(*iter)); struct ref_iterator *ref_iterator = &iter->base; + /* Check validity (but we don't need the result): */ + files_downcast(ref_store, 0, "reflog_iterator_begin"); + base_ref_iterator_init(ref_iterator, &files_reflog_iterator_vtable); iter->dir_iterator = dir_iterator_begin(git_path("logs")); return ref_iterator; } -int for_each_reflog(each_ref_fn fn, void *cb_data) -{ - return do_for_each_ref_iterator(files_reflog_iterator_begin(), - fn, cb_data); -} - static int ref_update_reject_duplicates(struct string_list *refnames, struct strbuf *err) { @@ -3925,15 +3946,16 @@ static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1, return 0; } -int reflog_expire(const char *refname, const unsigned char *sha1, - unsigned int flags, - reflog_expiry_prepare_fn prepare_fn, - reflog_expiry_should_prune_fn should_prune_fn, - reflog_expiry_cleanup_fn cleanup_fn, - void *policy_cb_data) +static int files_reflog_expire(struct ref_store *ref_store, + const char *refname, const unsigned char *sha1, + unsigned int flags, + reflog_expiry_prepare_fn prepare_fn, + reflog_expiry_should_prune_fn should_prune_fn, + reflog_expiry_cleanup_fn cleanup_fn, + void *policy_cb_data) { struct files_ref_store *refs = - get_files_ref_store(NULL, "reflog_expire"); + files_downcast(ref_store, 0, "reflog_expire"); static struct lock_file reflog_lock; struct expire_reflog_cb cb; struct ref_lock *lock; @@ -4046,5 +4068,13 @@ struct ref_storage_be refs_be_files = { files_ref_iterator_begin, files_read_raw_ref, - files_verify_refname_available + files_verify_refname_available, + + files_reflog_iterator_begin, + files_for_each_reflog_ent, + files_for_each_reflog_ent_reverse, + files_reflog_exists, + files_create_reflog, + files_delete_reflog, + files_reflog_expire }; diff --git a/refs/refs-internal.h b/refs/refs-internal.h index 5be62a296a..a20b62261f 100644 --- a/refs/refs-internal.h +++ b/refs/refs-internal.h @@ -404,13 +404,6 @@ struct ref_iterator *prefix_ref_iterator_begin(struct ref_iterator *iter0, const char *prefix, int trim); -/* - * Iterate over the references in the main ref_store that have a - * reflog. The paths within a directory are iterated over in arbitrary - * order. - */ -struct ref_iterator *files_reflog_iterator_begin(void); - /* Internal implementation of reference iteration: */ /* @@ -507,6 +500,35 @@ typedef struct ref_iterator *ref_iterator_begin_fn( struct ref_store *ref_store, const char *prefix, unsigned int flags); +/* reflog functions */ + +/* + * Iterate over the references in the specified ref_store that have a + * reflog. The refs are iterated over in arbitrary order. + */ +typedef struct ref_iterator *reflog_iterator_begin_fn( + struct ref_store *ref_store); + +typedef int for_each_reflog_ent_fn(struct ref_store *ref_store, + const char *refname, + each_reflog_ent_fn fn, + void *cb_data); +typedef int for_each_reflog_ent_reverse_fn(struct ref_store *ref_store, + const char *refname, + each_reflog_ent_fn fn, + void *cb_data); +typedef int reflog_exists_fn(struct ref_store *ref_store, const char *refname); +typedef int create_reflog_fn(struct ref_store *ref_store, const char *refname, + int force_create, struct strbuf *err); +typedef int delete_reflog_fn(struct ref_store *ref_store, const char *refname); +typedef int reflog_expire_fn(struct ref_store *ref_store, + const char *refname, const unsigned char *sha1, + unsigned int flags, + reflog_expiry_prepare_fn prepare_fn, + reflog_expiry_should_prune_fn should_prune_fn, + reflog_expiry_cleanup_fn cleanup_fn, + void *policy_cb_data); + /* * Read a reference from the specified reference store, non-recursively. * Set type to describe the reference, and: @@ -568,6 +590,14 @@ struct ref_storage_be { ref_iterator_begin_fn *iterator_begin; read_raw_ref_fn *read_raw_ref; verify_refname_available_fn *verify_refname_available; + + reflog_iterator_begin_fn *reflog_iterator_begin; + for_each_reflog_ent_fn *for_each_reflog_ent; + for_each_reflog_ent_reverse_fn *for_each_reflog_ent_reverse; + reflog_exists_fn *reflog_exists; + create_reflog_fn *create_reflog; + delete_reflog_fn *delete_reflog; + reflog_expire_fn *reflog_expire; }; extern struct ref_storage_be refs_be_files; -- cgit v1.2.3