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Merge pull request #1669 from arrbee/fix-index-add-bypath

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In loose objects backend, constrain mkdir calls to avoid extra mkdirs
This commit is contained in:
Vicent Martí 2013-06-24 11:20:57 -07:00
commit 6c4dadba45
2 changed files with 32 additions and 17 deletions
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3
src/fileops.c
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@ -348,7 +348,8 @@ int git_futils_mkdir(
int tmp_errno = errno;
/* ignore error if directory already exists */
if (p_stat(make_path.ptr, &st) < 0 || !S_ISDIR(st.st_mode)) {
if (p_stat(make_path.ptr, &st) < 0 ||
!(S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))) {
errno = tmp_errno;
giterr_set(GITERR_OS, "Failed to make directory '%s'", make_path.ptr);
goto done;

46
src/odb_loose.c
View File

@ -33,7 +33,9 @@ typedef struct loose_backend {
int object_zlib_level; /** loose object zlib compression level. */
int fsync_object_files; /** loose object file fsync flag. */
char *objects_dir;
size_t objects_dirlen;
char objects_dir[GIT_FLEX_ARRAY];
} loose_backend;
/* State structure for exploring directories,
@ -56,24 +58,30 @@ typedef struct {
*
***********************************************************/
static int object_file_name(git_buf *name, const char *dir, const git_oid *id)
static int object_file_name(
git_buf *name, const loose_backend *be, const git_oid *id)
{
git_buf_sets(name, dir);
/* expand length for 40 hex sha1 chars + 2 * '/' + '\0' */
if (git_buf_grow(name, git_buf_len(name) + GIT_OID_HEXSZ + 3) < 0)
/* expand length for object root + 40 hex sha1 chars + 2 * '/' + '\0' */
if (git_buf_grow(name, be->objects_dirlen + GIT_OID_HEXSZ + 3) < 0)
return -1;
git_buf_set(name, be->objects_dir, be->objects_dirlen);
git_path_to_dir(name);
/* loose object filename: aa/aaa... (41 bytes) */
git_oid_pathfmt(name->ptr + git_buf_len(name), id);
git_oid_pathfmt(name->ptr + name->size, id);
name->size += GIT_OID_HEXSZ + 1;
name->ptr[name->size] = '\0';
return 0;
}
static int object_mkdir(const git_buf *name, const loose_backend *be)
{
return git_futils_mkdir(
name->ptr + be->objects_dirlen, be->objects_dir, GIT_OBJECT_DIR_MODE,
GIT_MKDIR_PATH | GIT_MKDIR_SKIP_LAST | GIT_MKDIR_VERIFY_DIR);
}
static size_t get_binary_object_header(obj_hdr *hdr, git_buf *obj)
{
@ -457,7 +465,7 @@ static int locate_object(
loose_backend *backend,
const git_oid *oid)
{
int error = object_file_name(object_location, backend->objects_dir, oid);
int error = object_file_name(object_location, backend, oid);
if (!error && !git_path_exists(object_location->ptr))
return GIT_ENOTFOUND;
@ -769,8 +777,8 @@ static int loose_backend__stream_fwrite(git_oid *oid, git_odb_stream *_stream)
int error = 0;
if (git_filebuf_hash(oid, &stream->fbuf) < 0 ||
object_file_name(&final_path, backend->objects_dir, oid) < 0 ||
git_futils_mkpath2file(final_path.ptr, GIT_OBJECT_DIR_MODE) < 0)
object_file_name(&final_path, backend, oid) < 0 ||
object_mkdir(&final_path, backend) < 0)
error = -1;
/*
* Don't try to add an existing object to the repository. This
@ -880,8 +888,8 @@ static int loose_backend__write(git_oid *oid, git_odb_backend *_backend, const v
git_filebuf_write(&fbuf, header, header_len);
git_filebuf_write(&fbuf, data, len);
if (object_file_name(&final_path, backend->objects_dir, oid) < 0 ||
git_futils_mkpath2file(final_path.ptr, GIT_OBJECT_DIR_MODE) < 0 ||
if (object_file_name(&final_path, backend, oid) < 0 ||
object_mkdir(&final_path, backend) < 0 ||
git_filebuf_commit_at(&fbuf, final_path.ptr, GIT_OBJECT_FILE_MODE) < 0)
error = -1;
@ -898,7 +906,6 @@ static void loose_backend__free(git_odb_backend *_backend)
assert(_backend);
backend = (loose_backend *)_backend;
git__free(backend->objects_dir);
git__free(backend);
}
@ -909,13 +916,20 @@ int git_odb_backend_loose(
int do_fsync)
{
loose_backend *backend;
size_t objects_dirlen;
backend = git__calloc(1, sizeof(loose_backend));
assert(backend_out && objects_dir);
objects_dirlen = strlen(objects_dir);
backend = git__calloc(1, sizeof(loose_backend) + objects_dirlen + 2);
GITERR_CHECK_ALLOC(backend);
backend->parent.version = GIT_ODB_BACKEND_VERSION;
backend->objects_dir = git__strdup(objects_dir);
GITERR_CHECK_ALLOC(backend->objects_dir);
backend->objects_dirlen = objects_dirlen;
memcpy(backend->objects_dir, objects_dir, objects_dirlen);
if (backend->objects_dir[backend->objects_dirlen - 1] != '/')
backend->objects_dir[backend->objects_dirlen++] = '/';
if (compression_level < 0)
compression_level = Z_BEST_SPEED;