#include "cache.h"
+#include "config.h"
#include "lockfile.h"
#include "string-list.h"
#include "rerere.h"
#include "ll-merge.h"
#include "attr.h"
#include "pathspec.h"
+#include "sha1-lookup.h"
#define RESOLVED 0
#define PUNTED 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_AND_NULL(rerere_dir);
+ rerere_dir_nr = rerere_dir_alloc = 0;
+}
+
static void free_rerere_id(struct string_list_item *item)
{
free(item->util);
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)
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));
- xsnprintf(id->hex, sizeof(id->hex), "%s", hex);
+ id->collection = find_rerere_dir(hex);
+ id->variant = -1; /* not known yet */
return id;
}
static void read_rr(struct string_list *rr)
{
struct strbuf buf = STRBUF_INIT;
- FILE *in = fopen(git_path_merge_rr(), "r");
+ FILE *in = fopen_or_warn(git_path_merge_rr(), "r");
if (!in)
return;
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);
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");
io.input = fopen(path, "r");
io.io.wrerror = 0;
if (!io.input)
- return error("Could not open %s", path);
+ return error_errno("Could not open %s", path);
if (output) {
io.io.output = fopen(output, "w");
if (!io.io.output) {
+ error_errno("Could not write %s", output);
fclose(io.input);
- return error("Could not write %s", output);
+ return -1;
}
}
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)
return hunk_no;
}
-/*
- * 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
return 0;
}
+/*
+ * 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
{
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;
* 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;
{
int i;
- hold_locked_index(&index_lock, 1);
+ hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
for (i = 0; i < update->nr; i++) {
struct string_list_item *item = &update->items[i];
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
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);
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)
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++)
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)
/* 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
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)
* 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;
- xsnprintf(id.hex, sizeof(id.hex), "%s", 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;
}
*/
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)
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;
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);
}
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);