diff options
Diffstat (limited to 'rerere.c')
| -rw-r--r-- | rerere.c | 660 |
1 files changed, 452 insertions, 208 deletions
@@ -8,6 +8,7 @@ #include "ll-merge.h" #include "attr.h" #include "pathspec.h" +#include "sha1-lookup.h" #define RESOLVED 0 #define PUNTED 1 @@ -20,6 +21,29 @@ static int rerere_enabled = -1; /* automatically update cleanly resolved paths to the index */ static int rerere_autoupdate; +static int rerere_dir_nr; +static int rerere_dir_alloc; + +#define RR_HAS_POSTIMAGE 1 +#define RR_HAS_PREIMAGE 2 +static struct rerere_dir { + unsigned char sha1[20]; + int status_alloc, status_nr; + unsigned char *status; +} **rerere_dir; + +static void free_rerere_dirs(void) +{ + int i; + for (i = 0; i < rerere_dir_nr; i++) { + free(rerere_dir[i]->status); + free(rerere_dir[i]); + } + free(rerere_dir); + rerere_dir_nr = rerere_dir_alloc = 0; + rerere_dir = NULL; +} + static void free_rerere_id(struct string_list_item *item) { free(item->util); @@ -27,7 +51,33 @@ static void free_rerere_id(struct string_list_item *item) static const char *rerere_id_hex(const struct rerere_id *id) { - return id->hex; + return sha1_to_hex(id->collection->sha1); +} + +static void fit_variant(struct rerere_dir *rr_dir, int variant) +{ + variant++; + ALLOC_GROW(rr_dir->status, variant, rr_dir->status_alloc); + if (rr_dir->status_nr < variant) { + memset(rr_dir->status + rr_dir->status_nr, + '\0', variant - rr_dir->status_nr); + rr_dir->status_nr = variant; + } +} + +static void assign_variant(struct rerere_id *id) +{ + int variant; + struct rerere_dir *rr_dir = id->collection; + + variant = id->variant; + if (variant < 0) { + for (variant = 0; variant < rr_dir->status_nr; variant++) + if (!rr_dir->status[variant]) + break; + } + fit_variant(rr_dir, variant); + id->variant = variant; } const char *rerere_path(const struct rerere_id *id, const char *file) @@ -35,20 +85,103 @@ const char *rerere_path(const struct rerere_id *id, const char *file) if (!file) return git_path("rr-cache/%s", rerere_id_hex(id)); - return git_path("rr-cache/%s/%s", rerere_id_hex(id), file); + if (id->variant <= 0) + return git_path("rr-cache/%s/%s", rerere_id_hex(id), file); + + return git_path("rr-cache/%s/%s.%d", + rerere_id_hex(id), file, id->variant); +} + +static int is_rr_file(const char *name, const char *filename, int *variant) +{ + const char *suffix; + char *ep; + + if (!strcmp(name, filename)) { + *variant = 0; + return 1; + } + if (!skip_prefix(name, filename, &suffix) || *suffix != '.') + return 0; + + errno = 0; + *variant = strtol(suffix + 1, &ep, 10); + if (errno || *ep) + return 0; + return 1; +} + +static void scan_rerere_dir(struct rerere_dir *rr_dir) +{ + struct dirent *de; + DIR *dir = opendir(git_path("rr-cache/%s", sha1_to_hex(rr_dir->sha1))); + + if (!dir) + return; + while ((de = readdir(dir)) != NULL) { + int variant; + + if (is_rr_file(de->d_name, "postimage", &variant)) { + fit_variant(rr_dir, variant); + rr_dir->status[variant] |= RR_HAS_POSTIMAGE; + } else if (is_rr_file(de->d_name, "preimage", &variant)) { + fit_variant(rr_dir, variant); + rr_dir->status[variant] |= RR_HAS_PREIMAGE; + } + } + closedir(dir); +} + +static const unsigned char *rerere_dir_sha1(size_t i, void *table) +{ + struct rerere_dir **rr_dir = table; + return rr_dir[i]->sha1; +} + +static struct rerere_dir *find_rerere_dir(const char *hex) +{ + unsigned char sha1[20]; + struct rerere_dir *rr_dir; + int pos; + + if (get_sha1_hex(hex, sha1)) + return NULL; /* BUG */ + pos = sha1_pos(sha1, rerere_dir, rerere_dir_nr, rerere_dir_sha1); + if (pos < 0) { + rr_dir = xmalloc(sizeof(*rr_dir)); + hashcpy(rr_dir->sha1, sha1); + rr_dir->status = NULL; + rr_dir->status_nr = 0; + rr_dir->status_alloc = 0; + pos = -1 - pos; + + /* Make sure the array is big enough ... */ + ALLOC_GROW(rerere_dir, rerere_dir_nr + 1, rerere_dir_alloc); + /* ... and add it in. */ + rerere_dir_nr++; + memmove(rerere_dir + pos + 1, rerere_dir + pos, + (rerere_dir_nr - pos - 1) * sizeof(*rerere_dir)); + rerere_dir[pos] = rr_dir; + scan_rerere_dir(rr_dir); + } + return rerere_dir[pos]; } static int has_rerere_resolution(const struct rerere_id *id) { - struct stat st; + const int both = RR_HAS_POSTIMAGE|RR_HAS_PREIMAGE; + int variant = id->variant; - return !stat(rerere_path(id, "postimage"), &st); + if (variant < 0) + return 0; + return ((id->collection->status[variant] & both) == both); } static struct rerere_id *new_rerere_id_hex(char *hex) { struct rerere_id *id = xmalloc(sizeof(*id)); - strcpy(id->hex, hex); + id->collection = find_rerere_dir(hex); + id->variant = -1; /* not known yet */ return id; } @@ -75,16 +208,26 @@ static void read_rr(struct string_list *rr) char *path; unsigned char sha1[20]; struct rerere_id *id; + int variant; /* There has to be the hash, tab, path and then NUL */ if (buf.len < 42 || get_sha1_hex(buf.buf, sha1)) die("corrupt MERGE_RR"); - if (buf.buf[40] != '\t') + if (buf.buf[40] != '.') { + variant = 0; + path = buf.buf + 40; + } else { + errno = 0; + variant = strtol(buf.buf + 41, &path, 10); + if (errno) + die("corrupt MERGE_RR"); + } + if (*(path++) != '\t') die("corrupt MERGE_RR"); buf.buf[40] = '\0'; - path = buf.buf + 41; id = new_rerere_id_hex(buf.buf); + id->variant = variant; string_list_insert(rr, path)->util = id; } strbuf_release(&buf); @@ -105,9 +248,16 @@ static int write_rr(struct string_list *rr, int out_fd) id = rr->items[i].util; if (!id) continue; - strbuf_addf(&buf, "%s\t%s%c", - rerere_id_hex(id), - rr->items[i].string, 0); + assert(id->variant >= 0); + if (0 < id->variant) + strbuf_addf(&buf, "%s.%d\t%s%c", + rerere_id_hex(id), id->variant, + rr->items[i].string, 0); + else + strbuf_addf(&buf, "%s\t%s%c", + rerere_id_hex(id), + rr->items[i].string, 0); + if (write_in_full(out_fd, buf.buf, buf.len) != buf.len) die("unable to write rerere record"); @@ -351,8 +501,7 @@ static int handle_file(const char *path, unsigned char *sha1, const char *output error("There were errors while writing %s (%s)", path, strerror(io.io.wrerror)); if (io.io.output && fclose(io.io.output)) - io.io.wrerror = error("Failed to flush %s: %s", - path, strerror(errno)); + io.io.wrerror = error_errno("Failed to flush %s", path); if (hunk_no < 0) { if (output) @@ -365,103 +514,6 @@ static int handle_file(const char *path, unsigned char *sha1, const char *output } /* - * Subclass of rerere_io that reads from an in-core buffer that is a - * strbuf - */ -struct rerere_io_mem { - struct rerere_io io; - struct strbuf input; -}; - -/* - * ... and its getline() method implementation - */ -static int rerere_mem_getline(struct strbuf *sb, struct rerere_io *io_) -{ - struct rerere_io_mem *io = (struct rerere_io_mem *)io_; - char *ep; - size_t len; - - strbuf_release(sb); - if (!io->input.len) - return -1; - ep = memchr(io->input.buf, '\n', io->input.len); - if (!ep) - ep = io->input.buf + io->input.len; - else if (*ep == '\n') - ep++; - len = ep - io->input.buf; - strbuf_add(sb, io->input.buf, len); - strbuf_remove(&io->input, 0, len); - return 0; -} - -static int handle_cache(const char *path, unsigned char *sha1, const char *output) -{ - mmfile_t mmfile[3] = {{NULL}}; - mmbuffer_t result = {NULL, 0}; - const struct cache_entry *ce; - int pos, len, i, hunk_no; - struct rerere_io_mem io; - int marker_size = ll_merge_marker_size(path); - - /* - * Reproduce the conflicted merge in-core - */ - len = strlen(path); - pos = cache_name_pos(path, len); - if (0 <= pos) - return -1; - pos = -pos - 1; - - while (pos < active_nr) { - enum object_type type; - unsigned long size; - - ce = active_cache[pos++]; - if (ce_namelen(ce) != len || memcmp(ce->name, path, len)) - break; - i = ce_stage(ce) - 1; - if (!mmfile[i].ptr) { - mmfile[i].ptr = read_sha1_file(ce->sha1, &type, &size); - mmfile[i].size = size; - } - } - for (i = 0; i < 3; i++) - if (!mmfile[i].ptr && !mmfile[i].size) - mmfile[i].ptr = xstrdup(""); - - /* - * NEEDSWORK: handle conflicts from merges with - * merge.renormalize set, too - */ - ll_merge(&result, path, &mmfile[0], NULL, - &mmfile[1], "ours", - &mmfile[2], "theirs", NULL); - for (i = 0; i < 3; i++) - free(mmfile[i].ptr); - - memset(&io, 0, sizeof(io)); - io.io.getline = rerere_mem_getline; - if (output) - io.io.output = fopen(output, "w"); - else - io.io.output = NULL; - strbuf_init(&io.input, 0); - strbuf_attach(&io.input, result.ptr, result.size, result.size); - - /* - * Grab the conflict ID and optionally write the original - * contents with conflict markers out. - */ - hunk_no = handle_path(sha1, (struct rerere_io *)&io, marker_size); - strbuf_release(&io.input); - if (io.io.output) - fclose(io.io.output); - return hunk_no; -} - -/* * Look at a cache entry at "i" and see if it is not conflicting, * conflicting and we are willing to handle, or conflicting and * we are unable to handle, and return the determination in *type. @@ -569,6 +621,33 @@ int rerere_remaining(struct string_list *merge_rr) } /* + * Try using the given conflict resolution "ID" to see + * if that recorded conflict resolves cleanly what we + * got in the "cur". + */ +static int try_merge(const struct rerere_id *id, const char *path, + mmfile_t *cur, mmbuffer_t *result) +{ + int ret; + mmfile_t base = {NULL, 0}, other = {NULL, 0}; + + if (read_mmfile(&base, rerere_path(id, "preimage")) || + read_mmfile(&other, rerere_path(id, "postimage"))) + ret = 1; + else + /* + * A three-way merge. Note that this honors user-customizable + * low-level merge driver settings. + */ + ret = ll_merge(result, path, &base, NULL, cur, "", &other, "", NULL); + + free(base.ptr); + free(other.ptr); + + return ret; +} + +/* * Find the conflict identified by "id"; the change between its * "preimage" (i.e. a previous contents with conflict markers) and its * "postimage" (i.e. the corresponding contents with conflicts @@ -582,30 +661,20 @@ static int merge(const struct rerere_id *id, const char *path) { FILE *f; int ret; - mmfile_t cur = {NULL, 0}, base = {NULL, 0}, other = {NULL, 0}; + mmfile_t cur = {NULL, 0}; mmbuffer_t result = {NULL, 0}; /* * Normalize the conflicts in path and write it out to * "thisimage" temporary file. */ - if (handle_file(path, NULL, rerere_path(id, "thisimage")) < 0) { - ret = 1; - goto out; - } - - if (read_mmfile(&cur, rerere_path(id, "thisimage")) || - read_mmfile(&base, rerere_path(id, "preimage")) || - read_mmfile(&other, rerere_path(id, "postimage"))) { + if ((handle_file(path, NULL, rerere_path(id, "thisimage")) < 0) || + read_mmfile(&cur, rerere_path(id, "thisimage"))) { ret = 1; goto out; } - /* - * A three-way merge. Note that this honors user-customizable - * low-level merge driver settings. - */ - ret = ll_merge(&result, path, &base, NULL, &cur, "", &other, "", NULL); + ret = try_merge(id, path, &cur, &result); if (ret) goto out; @@ -614,25 +683,20 @@ static int merge(const struct rerere_id *id, const char *path) * Mark that "postimage" was used to help gc. */ if (utime(rerere_path(id, "postimage"), NULL) < 0) - warning("failed utime() on %s: %s", - rerere_path(id, "postimage"), - strerror(errno)); + warning_errno("failed utime() on %s", + rerere_path(id, "postimage")); /* Update "path" with the resolution */ f = fopen(path, "w"); if (!f) - return error("Could not open %s: %s", path, - strerror(errno)); + return error_errno("Could not open %s", path); if (fwrite(result.ptr, result.size, 1, f) != 1) - error("Could not write %s: %s", path, strerror(errno)); + error_errno("Could not write %s", path); if (fclose(f)) - return error("Writing %s failed: %s", path, - strerror(errno)); + return error_errno("Writing %s failed", path); out: free(cur.ptr); - free(base.ptr); - free(other.ptr); free(result.ptr); return ret; @@ -661,6 +725,13 @@ static void update_paths(struct string_list *update) rollback_lock_file(&index_lock); } +static void remove_variant(struct rerere_id *id) +{ + unlink_or_warn(rerere_path(id, "postimage")); + unlink_or_warn(rerere_path(id, "preimage")); + id->collection->status[id->variant] = 0; +} + /* * The path indicated by rr_item may still have conflict for which we * have a recorded resolution, in which case replay it and optionally @@ -672,12 +743,47 @@ static void do_rerere_one_path(struct string_list_item *rr_item, struct string_list *update) { const char *path = rr_item->string; - const struct rerere_id *id = rr_item->util; + struct rerere_id *id = rr_item->util; + struct rerere_dir *rr_dir = id->collection; + int variant; + + variant = id->variant; + + /* Has the user resolved it already? */ + if (variant >= 0) { + if (!handle_file(path, NULL, NULL)) { + copy_file(rerere_path(id, "postimage"), path, 0666); + id->collection->status[variant] |= RR_HAS_POSTIMAGE; + fprintf(stderr, "Recorded resolution for '%s'.\n", path); + free_rerere_id(rr_item); + rr_item->util = NULL; + return; + } + /* + * There may be other variants that can cleanly + * replay. Try them and update the variant number for + * this one. + */ + } + + /* Does any existing resolution apply cleanly? */ + for (variant = 0; variant < rr_dir->status_nr; variant++) { + const int both = RR_HAS_PREIMAGE | RR_HAS_POSTIMAGE; + struct rerere_id vid = *id; + + if ((rr_dir->status[variant] & both) != both) + continue; + + vid.variant = variant; + if (merge(&vid, path)) + continue; /* failed to replay */ - /* Is there a recorded resolution we could attempt to apply? */ - if (has_rerere_resolution(id)) { - if (merge(id, path)) - return; /* failed to replay */ + /* + * If there already is a different variant that applies + * cleanly, there is no point maintaining our own variant. + */ + if (0 <= id->variant && id->variant != variant) + remove_variant(id); if (rerere_autoupdate) string_list_insert(update, path); @@ -685,15 +791,24 @@ static void do_rerere_one_path(struct string_list_item *rr_item, fprintf(stderr, "Resolved '%s' using previous resolution.\n", path); - } else if (!handle_file(path, NULL, NULL)) { - /* The user has resolved it. */ - copy_file(rerere_path(id, "postimage"), path, 0666); - fprintf(stderr, "Recorded resolution for '%s'.\n", path); - } else { + free_rerere_id(rr_item); + rr_item->util = NULL; return; } - free_rerere_id(rr_item); - rr_item->util = NULL; + + /* None of the existing one applies; we need a new variant */ + assign_variant(id); + + variant = id->variant; + handle_file(path, NULL, rerere_path(id, "preimage")); + if (id->collection->status[variant] & RR_HAS_POSTIMAGE) { + const char *path = rerere_path(id, "postimage"); + if (unlink(path)) + die_errno("cannot unlink stray '%s'", path); + id->collection->status[variant] &= ~RR_HAS_POSTIMAGE; + } + id->collection->status[variant] |= RR_HAS_PREIMAGE; + fprintf(stderr, "Recorded preimage for '%s'\n", path); } static int do_plain_rerere(struct string_list *rr, int fd) @@ -731,24 +846,8 @@ static int do_plain_rerere(struct string_list *rr, int fd) id = new_rerere_id(sha1); string_list_insert(rr, path)->util = id; - /* - * If the directory does not exist, create - * it. mkdir_in_gitdir() will fail with - * EEXIST if there already is one. - * - * NEEDSWORK: make sure "gc" does not remove - * preimage without removing the directory. - */ - if (mkdir_in_gitdir(rerere_path(id, NULL))) - continue; - - /* - * We are the first to encounter this - * conflict. Ask handle_file() to write the - * normalized contents to the "preimage" file. - */ - handle_file(path, NULL, rerere_path(id, "preimage")); - fprintf(stderr, "Recorded preimage for '%s'\n", path); + /* Ensure that the directory exists. */ + mkdir_in_gitdir(rerere_path(id, NULL)); } for (i = 0; i < rr->nr; i++) @@ -812,12 +911,112 @@ int setup_rerere(struct string_list *merge_rr, int flags) int rerere(int flags) { struct string_list merge_rr = STRING_LIST_INIT_DUP; - int fd; + int fd, status; fd = setup_rerere(&merge_rr, flags); if (fd < 0) return 0; - return do_plain_rerere(&merge_rr, fd); + status = do_plain_rerere(&merge_rr, fd); + free_rerere_dirs(); + return status; +} + +/* + * Subclass of rerere_io that reads from an in-core buffer that is a + * strbuf + */ +struct rerere_io_mem { + struct rerere_io io; + struct strbuf input; +}; + +/* + * ... and its getline() method implementation + */ +static int rerere_mem_getline(struct strbuf *sb, struct rerere_io *io_) +{ + struct rerere_io_mem *io = (struct rerere_io_mem *)io_; + char *ep; + size_t len; + + strbuf_release(sb); + if (!io->input.len) + return -1; + ep = memchr(io->input.buf, '\n', io->input.len); + if (!ep) + ep = io->input.buf + io->input.len; + else if (*ep == '\n') + ep++; + len = ep - io->input.buf; + strbuf_add(sb, io->input.buf, len); + strbuf_remove(&io->input, 0, len); + return 0; +} + +static int handle_cache(const char *path, unsigned char *sha1, const char *output) +{ + mmfile_t mmfile[3] = {{NULL}}; + mmbuffer_t result = {NULL, 0}; + const struct cache_entry *ce; + int pos, len, i, hunk_no; + struct rerere_io_mem io; + int marker_size = ll_merge_marker_size(path); + + /* + * Reproduce the conflicted merge in-core + */ + len = strlen(path); + pos = cache_name_pos(path, len); + if (0 <= pos) + return -1; + pos = -pos - 1; + + while (pos < active_nr) { + enum object_type type; + unsigned long size; + + ce = active_cache[pos++]; + if (ce_namelen(ce) != len || memcmp(ce->name, path, len)) + break; + i = ce_stage(ce) - 1; + if (!mmfile[i].ptr) { + mmfile[i].ptr = read_sha1_file(ce->oid.hash, &type, + &size); + mmfile[i].size = size; + } + } + for (i = 0; i < 3; i++) + if (!mmfile[i].ptr && !mmfile[i].size) + mmfile[i].ptr = xstrdup(""); + + /* + * NEEDSWORK: handle conflicts from merges with + * merge.renormalize set, too? + */ + ll_merge(&result, path, &mmfile[0], NULL, + &mmfile[1], "ours", + &mmfile[2], "theirs", NULL); + for (i = 0; i < 3; i++) + free(mmfile[i].ptr); + + memset(&io, 0, sizeof(io)); + io.io.getline = rerere_mem_getline; + if (output) + io.io.output = fopen(output, "w"); + else + io.io.output = NULL; + strbuf_init(&io.input, 0); + strbuf_attach(&io.input, result.ptr, result.size, result.size); + + /* + * Grab the conflict ID and optionally write the original + * contents with conflict markers out. + */ + hunk_no = handle_path(sha1, (struct rerere_io *)&io, marker_size); + strbuf_release(&io.input); + if (io.io.output) + fclose(io.io.output); + return hunk_no; } static int rerere_forget_one_path(const char *path, struct string_list *rr) @@ -838,11 +1037,43 @@ static int rerere_forget_one_path(const char *path, struct string_list *rr) /* Nuke the recorded resolution for the conflict */ id = new_rerere_id(sha1); + + for (id->variant = 0; + id->variant < id->collection->status_nr; + id->variant++) { + mmfile_t cur = { NULL, 0 }; + mmbuffer_t result = {NULL, 0}; + int cleanly_resolved; + + if (!has_rerere_resolution(id)) + continue; + + handle_cache(path, sha1, rerere_path(id, "thisimage")); + if (read_mmfile(&cur, rerere_path(id, "thisimage"))) { + free(cur.ptr); + error("Failed to update conflicted state in '%s'", path); + goto fail_exit; + } + cleanly_resolved = !try_merge(id, path, &cur, &result); + free(result.ptr); + free(cur.ptr); + if (cleanly_resolved) + break; + } + + if (id->collection->status_nr <= id->variant) { + error("no remembered resolution for '%s'", path); + goto fail_exit; + } + filename = rerere_path(id, "postimage"); - if (unlink(filename)) - return (errno == ENOENT - ? error("no remembered resolution for %s", path) - : error("cannot unlink %s: %s", filename, strerror(errno))); + if (unlink(filename)) { + if (errno == ENOENT) + error("no remembered resolution for %s", path); + else + error_errno("cannot unlink %s", filename); + goto fail_exit; + } /* * Update the preimage so that the user can resolve the @@ -861,6 +1092,10 @@ static int rerere_forget_one_path(const char *path, struct string_list *rr) item->util = id; fprintf(stderr, "Forgot resolution for %s\n", path); return 0; + +fail_exit: + free(id); + return -1; } int rerere_forget(struct pathspec *pathspec) @@ -897,29 +1132,16 @@ int rerere_forget(struct pathspec *pathspec) * Garbage collection support */ -/* - * Note that this is not reentrant but is used only one-at-a-time - * so it does not matter right now. - */ -static struct rerere_id *dirname_to_id(const char *name) -{ - static struct rerere_id id; - strcpy(id.hex, name); - return &id; -} - -static time_t rerere_created_at(const char *dir_name) +static time_t rerere_created_at(struct rerere_id *id) { struct stat st; - struct rerere_id *id = dirname_to_id(dir_name); return stat(rerere_path(id, "preimage"), &st) ? (time_t) 0 : st.st_mtime; } -static time_t rerere_last_used_at(const char *dir_name) +static time_t rerere_last_used_at(struct rerere_id *id) { struct stat st; - struct rerere_id *id = dirname_to_id(dir_name); return stat(rerere_path(id, "postimage"), &st) ? (time_t) 0 : st.st_mtime; } @@ -929,15 +1151,28 @@ static time_t rerere_last_used_at(const char *dir_name) */ static void unlink_rr_item(struct rerere_id *id) { - unlink(rerere_path(id, "thisimage")); - unlink(rerere_path(id, "preimage")); - unlink(rerere_path(id, "postimage")); - /* - * NEEDSWORK: what if this rmdir() fails? Wouldn't we then - * assume that we already have preimage recorded in - * do_plain_rerere()? - */ - rmdir(rerere_path(id, NULL)); + unlink_or_warn(rerere_path(id, "thisimage")); + remove_variant(id); + id->collection->status[id->variant] = 0; +} + +static void prune_one(struct rerere_id *id, time_t now, + int cutoff_resolve, int cutoff_noresolve) +{ + time_t then; + int cutoff; + + then = rerere_last_used_at(id); + if (then) + cutoff = cutoff_resolve; + else { + then = rerere_created_at(id); + if (!then) + return; + cutoff = cutoff_noresolve; + } + if (then < now - cutoff * 86400) + unlink_rr_item(id); } void rerere_gc(struct string_list *rr) @@ -945,8 +1180,8 @@ void rerere_gc(struct string_list *rr) struct string_list to_remove = STRING_LIST_INIT_DUP; DIR *dir; struct dirent *e; - int i, cutoff; - time_t now = time(NULL), then; + int i; + time_t now = time(NULL); int cutoff_noresolve = 15; int cutoff_resolve = 60; @@ -961,25 +1196,32 @@ void rerere_gc(struct string_list *rr) die_errno("unable to open rr-cache directory"); /* Collect stale conflict IDs ... */ while ((e = readdir(dir))) { + struct rerere_dir *rr_dir; + struct rerere_id id; + int now_empty; + if (is_dot_or_dotdot(e->d_name)) continue; - - then = rerere_last_used_at(e->d_name); - if (then) { - cutoff = cutoff_resolve; - } else { - then = rerere_created_at(e->d_name); - if (!then) - continue; - cutoff = cutoff_noresolve; + rr_dir = find_rerere_dir(e->d_name); + if (!rr_dir) + continue; /* or should we remove e->d_name? */ + + now_empty = 1; + for (id.variant = 0, id.collection = rr_dir; + id.variant < id.collection->status_nr; + id.variant++) { + prune_one(&id, now, cutoff_resolve, cutoff_noresolve); + if (id.collection->status[id.variant]) + now_empty = 0; } - if (then < now - cutoff * 86400) + if (now_empty) string_list_append(&to_remove, e->d_name); } closedir(dir); - /* ... and then remove them one-by-one */ + + /* ... and then remove the empty directories */ for (i = 0; i < to_remove.nr; i++) - unlink_rr_item(dirname_to_id(to_remove.items[i].string)); + rmdir(git_path("rr-cache/%s", to_remove.items[i].string)); string_list_clear(&to_remove, 0); rollback_lock_file(&write_lock); } @@ -1000,8 +1242,10 @@ void rerere_clear(struct string_list *merge_rr) for (i = 0; i < merge_rr->nr; i++) { struct rerere_id *id = merge_rr->items[i].util; - if (!has_rerere_resolution(id)) + if (!has_rerere_resolution(id)) { unlink_rr_item(id); + rmdir(rerere_path(id, NULL)); + } } unlink_or_warn(git_path_merge_rr()); rollback_lock_file(&write_lock); |