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db: restructure in-memory organization

cute-signatures
Timo Teras 2009-01-06 19:44:54 +02:00
parent 354b6e4631
commit 6b2b9d303e
3 changed files with 194 additions and 139 deletions
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18
src/apk_database.h
View File

@ -21,10 +21,9 @@
struct apk_db_file {
struct hlist_node dir_files_list;
struct hlist_node pkg_files_list;
struct hlist_node diri_files_list;
struct apk_db_dir *dir;
struct apk_package *owner;
struct apk_db_dir_instance *diri;
csum_t csum;
char filename[];
};
@ -37,12 +36,19 @@ struct apk_db_dir {
struct hlist_head files;
struct apk_db_dir *parent;
unsigned refs;
unsigned short refs;
unsigned short flags;
char dirname[];
};
struct apk_db_dir_instance {
struct hlist_node pkg_dirs_list;
struct hlist_head owned_files;
struct apk_package *pkg;
struct apk_db_dir *dir;
mode_t mode;
uid_t uid;
gid_t gid;
unsigned flags;
char dirname[];
};
struct apk_name {

2
src/apk_package.h
View File

@ -59,7 +59,7 @@ struct apk_package {
/* for installed packages only */
struct list_head installed_pkgs_list;
struct hlist_head owned_files;
struct hlist_head owned_dirs;
struct hlist_head scripts;
};
APK_ARRAY(apk_package_array, struct apk_package *);

313
src/database.c
View File

@ -28,9 +28,11 @@ struct install_ctx {
struct apk_package *pkg;
int script;
struct apk_db_dir *dircache;
struct apk_db_dir_instance *diri;
struct hlist_node **diri_node;
struct hlist_node **file_dir_node;
struct hlist_node **file_pkg_node;
struct hlist_node **file_diri_node;
};
static apk_blob_t pkg_name_get_key(apk_hash_item item)
@ -103,25 +105,7 @@ void apk_name_free(struct apk_name *name)
free(name);
}
static struct apk_db_dir *apk_db_dir_ref(struct apk_database *db,
struct apk_db_dir *dir,
int create_dir)
{
if (dir->refs == 0) {
if (dir->parent != NULL)
apk_db_dir_ref(db, dir->parent, create_dir);
db->installed.stats.dirs++;
if (create_dir && dir->mode) {
mkdir(dir->dirname, dir->mode);
chown(dir->dirname, dir->uid, dir->gid);
}
}
dir->refs++;
return dir;
}
static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir)
static void apk_db_dir_put(struct apk_database *db, struct apk_db_dir *dir)
{
dir->refs--;
if (dir->refs > 0)
@ -131,11 +115,17 @@ static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir)
rmdir(dir->dirname);
if (dir->parent != NULL)
apk_db_dir_unref(db, dir->parent);
apk_db_dir_put(db, dir->parent);
}
static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
apk_blob_t name)
static struct apk_db_dir *apk_db_dir_get(struct apk_db_dir *dir)
{
dir->refs++;
return dir;
}
static struct apk_db_dir *apk_db_dir_get_db(struct apk_database *db,
apk_blob_t name)
{
struct apk_db_dir *dir;
apk_blob_t bparent;
@ -146,9 +136,11 @@ static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
dir = (struct apk_db_dir *) apk_hash_get(&db->installed.dirs, name);
if (dir != NULL)
return dir;
return apk_db_dir_get(dir);
db->installed.stats.dirs++;
dir = calloc(1, sizeof(*dir) + name.len + 1);
dir->refs = 1;
memcpy(dir->dirname, name.ptr, name.len);
dir->dirname[name.len] = 0;
apk_hash_insert(&db->installed.dirs, dir);
@ -156,9 +148,9 @@ static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
if (name.len == 0)
dir->parent = NULL;
else if (apk_blob_rsplit(name, '/', &bparent, NULL))
dir->parent = apk_db_dir_get(db, bparent);
dir->parent = apk_db_dir_get_db(db, bparent);
else
dir->parent = apk_db_dir_get(db, APK_BLOB_NULL);
dir->parent = apk_db_dir_get_db(db, APK_BLOB_NULL);
if (dir->parent != NULL)
dir->flags = dir->parent->flags;
@ -174,6 +166,37 @@ static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
return dir;
}
static struct apk_db_dir_instance *apk_db_diri_new(struct apk_database *db,
struct apk_package *pkg,
apk_blob_t name,
struct hlist_node **after)
{
struct apk_db_dir_instance *diri;
diri = calloc(1, sizeof(struct apk_db_dir_instance));
hlist_add_after(&diri->pkg_dirs_list, after);
diri->dir = apk_db_dir_get_db(db, name);
diri->pkg = pkg;
return diri;
}
static void apk_db_diri_set(struct apk_db_dir_instance *diri, mode_t mode,
uid_t uid, gid_t gid)
{
diri->mode = mode;
diri->uid = uid;
diri->gid = gid;
}
static void apk_db_diri_create(struct apk_db_dir_instance *diri)
{
if (diri->dir->refs == 1) {
mkdir(diri->dir->dirname, diri->mode);
chown(diri->dir->dirname, diri->uid, diri->gid);
}
}
static struct apk_db_file *apk_db_file_new(struct apk_db_dir *dir,
apk_blob_t name,
struct hlist_node **after)
@ -182,7 +205,6 @@ static struct apk_db_file *apk_db_file_new(struct apk_db_dir *dir,
file = calloc(1, sizeof(*file) + name.len + 1);
hlist_add_after(&file->dir_files_list, after);
file->dir = dir;
memcpy(file->filename, name.ptr, name.len);
file->filename[name.len] = 0;
@ -191,45 +213,27 @@ static struct apk_db_file *apk_db_file_new(struct apk_db_dir *dir,
static void apk_db_file_set_owner(struct apk_database *db,
struct apk_db_file *file,
struct apk_package *owner,
int create_dir,
struct apk_db_dir_instance *diri,
struct hlist_node **after)
{
if (file->owner != NULL) {
hlist_del(&file->pkg_files_list, &file->owner->owned_files);
if (file->diri != NULL) {
hlist_del(&file->diri_files_list, &file->diri->owned_files);
} else {
db->installed.stats.files++;
}
file->dir = apk_db_dir_ref(db, file->dir, create_dir);
file->owner = owner;
hlist_add_after(&file->pkg_files_list, after);
file->diri = diri;
hlist_add_after(&file->diri_files_list, after);
}
static struct apk_db_file *apk_db_file_get(struct apk_database *db,
apk_blob_t name,
apk_blob_t bfile,
struct install_ctx *ctx)
{
struct apk_db_dir *dir;
struct apk_db_file *file;
struct hlist_node *cur;
apk_blob_t bdir, bfile;
dir = NULL;
if (!apk_blob_rsplit(name, '/', &bdir, &bfile)) {
dir = apk_db_dir_get(db, APK_BLOB_NULL);
bfile = name;
} else if (ctx != NULL && ctx->dircache != NULL) {
dir = ctx->dircache;
if (strncmp(dir->dirname, bdir.ptr, bdir.len) != 0 ||
dir->dirname[bdir.len] != 0)
dir = NULL;
}
if (dir == NULL)
dir = apk_db_dir_get(db, bdir);
if (ctx != NULL && dir != ctx->dircache) {
ctx->dircache = dir;
ctx->file_dir_node = hlist_tail_ptr(&dir->files);
}
dir = ctx->diri->dir;
hlist_for_each_entry(file, cur, &dir->files, dir_files_list) {
if (strncmp(file->filename, bfile.ptr, bfile.len) == 0 &&
@ -237,6 +241,8 @@ static struct apk_db_file *apk_db_file_get(struct apk_database *db,
return file;
}
if (ctx->file_dir_node == NULL)
ctx->file_dir_node = hlist_tail_ptr(&dir->files);
file = apk_db_file_new(dir, bfile, ctx->file_dir_node);
ctx->file_dir_node = &file->dir_files_list.next;
@ -263,15 +269,17 @@ static struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_pa
static int apk_db_index_read(struct apk_database *db, struct apk_istream *is, int repo)
{
struct apk_package *pkg = NULL;
struct apk_db_dir *dir = NULL;
struct apk_db_dir_instance *diri = NULL;
struct apk_db_file *file = NULL;
struct hlist_node **diri_node = NULL;
struct hlist_node **file_dir_node = NULL;
struct hlist_node **file_pkg_node = NULL;
struct hlist_node **file_diri_node = NULL;
char buf[1024];
apk_blob_t l, r;
int n, field;
int n, field, ret;
ret = -1;
r = APK_BLOB_PTR_LEN(buf, 0);
while (1) {
n = is->read(is, &r.ptr[r.len], sizeof(buf) - r.len);
@ -305,9 +313,10 @@ static int apk_db_index_read(struct apk_database *db, struct apk_istream *is, in
/* If no package, create new */
if (pkg == NULL) {
pkg = apk_pkg_new();
dir = NULL;
diri = NULL;
diri_node = &pkg->owned_dirs.first;
file_dir_node = NULL;
file_pkg_node = hlist_tail_ptr(&pkg->owned_files);
file_diri_node = NULL;
}
/* Standard index line? */
@ -326,25 +335,28 @@ static int apk_db_index_read(struct apk_database *db, struct apk_istream *is, in
apk_error("FDB directory entry before package entry");
return -1;
}
dir = apk_db_dir_get(db, l);
file_dir_node = hlist_tail_ptr(&dir->files);
diri = apk_db_diri_new(db, pkg, l, diri_node);
diri_node = &diri->pkg_dirs_list.next;
file_dir_node = hlist_tail_ptr(&diri->dir->files);
file_diri_node = &diri->owned_files.first;
break;
case 'M':
if (dir == NULL) {
if (diri == NULL) {
apk_error("FDB directory metadata entry before directory entry");
return -1;
}
sscanf(l.ptr, "%d:%d:%o", &dir->uid, &dir->gid, &dir->mode);
sscanf(l.ptr, "%d:%d:%o",
&diri->uid, &diri->gid, &diri->mode);
break;
case 'R':
if (dir == NULL) {
if (diri == NULL) {
apk_error("FDB file entry before directory entry");
return -1;
}
file = apk_db_file_new(dir, l, file_dir_node);
apk_db_file_set_owner(db, file, pkg, FALSE, file_pkg_node);
file = apk_db_file_new(diri->dir, l, file_dir_node);
file_dir_node = &file->dir_files_list.next;
file_pkg_node = &file->pkg_files_list.next;
apk_db_file_set_owner(db, file, diri, file_diri_node);
file_diri_node = &file->diri_files_list.next;
break;
case 'Z':
if (file == NULL) {
@ -365,52 +377,48 @@ static int apk_db_index_read(struct apk_database *db, struct apk_istream *is, in
memcpy(&buf[0], r.ptr, r.len);
r = APK_BLOB_PTR_LEN(buf, r.len);
}
ret = 0;
return 0;
return ret;
}
static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
{
struct apk_package *pkg;
struct apk_db_dir *dir;
struct apk_db_dir_instance *diri;
struct apk_db_file *file;
struct hlist_node *c2;
struct hlist_node *c1, *c2;
char buf[1024];
apk_blob_t blob;
int n;
int n = 0;
list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
blob = apk_pkg_format_index_entry(pkg, sizeof(buf), buf);
if (blob.ptr)
os->write(os, blob.ptr, blob.len - 1);
dir = NULL;
hlist_for_each_entry(file, c2, &pkg->owned_files, pkg_files_list) {
if (file->owner == NULL)
continue;
n = 0;
if (dir != file->dir) {
dir = file->dir;
n += snprintf(&buf[n], sizeof(buf)-n,
"F:%s\n"
"M:%d:%d:%o\n",
dir->dirname,
dir->uid, dir->gid, dir->mode);
}
hlist_for_each_entry(diri, c1, &pkg->owned_dirs, pkg_dirs_list) {
n += snprintf(&buf[n], sizeof(buf)-n,
"R:%s\n",
file->filename);
if (csum_valid(file->csum)) {
n += snprintf(&buf[n], sizeof(buf)-n, "Z:");
n += apk_hexdump_format(sizeof(buf)-n, &buf[n],
APK_BLOB_BUF(file->csum));
n += snprintf(&buf[n], sizeof(buf)-n, "\n");
}
"F:%s\n"
"M:%d:%d:%o\n",
diri->dir->dirname,
diri->uid, diri->gid, diri->mode);
if (os->write(os, buf, n) != n)
return -1;
hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
n += snprintf(&buf[n], sizeof(buf)-n,
"R:%s\n",
file->filename);
if (csum_valid(file->csum)) {
n += snprintf(&buf[n], sizeof(buf)-n, "Z:");
n += apk_hexdump_format(sizeof(buf)-n, &buf[n],
APK_BLOB_BUF(file->csum));
n += snprintf(&buf[n], sizeof(buf)-n, "\n");
}
if (os->write(os, buf, n) != n)
return -1;
n = 0;
}
}
os->write(os, "\n", 1);
}
@ -721,9 +729,9 @@ static int apk_db_install_archive_entry(void *_ctx,
{
struct install_ctx *ctx = (struct install_ctx *) _ctx;
struct apk_database *db = ctx->db;
struct apk_package *pkg = ctx->pkg;
apk_blob_t name = APK_BLOB_STR(ae->name);
struct apk_db_dir *dir;
struct apk_package *pkg = ctx->pkg, *opkg;
apk_blob_t name = APK_BLOB_STR(ae->name), bdir, bfile;
struct apk_db_dir_instance *diri = ctx->diri;
struct apk_db_file *file;
struct apk_file_info fi;
char alt_name[PATH_MAX];
@ -767,30 +775,59 @@ static int apk_db_install_archive_entry(void *_ctx,
}
/* Installable entry */
if (ctx->file_pkg_node == NULL)
ctx->file_pkg_node = hlist_tail_ptr(&pkg->owned_files);
if (!S_ISDIR(ae->mode)) {
file = apk_db_file_get(db, name, ctx);
if (file == NULL)
return -1;
if (!apk_blob_rsplit(name, '/', &bdir, &bfile))
return 0;
if (file->owner != NULL &&
file->owner->name != pkg->name &&
strcmp(file->owner->name->name, "busybox") != 0) {
apk_error("%s: Trying to overwrite %s owned by %s.\n",
pkg->name->name, ae->name,
file->owner->name->name);
if (bfile.len > 6 && memcmp(bfile.ptr, ".keep_", 6) == 0)
return 0;
r = strlen(diri->dir->dirname);
r = strlen(bdir.ptr);
r = 0;
/* Make sure the file is part of the cached directory tree */
if (diri == NULL ||
strncmp(diri->dir->dirname, bdir.ptr, bdir.len) != 0 ||
diri->dir->dirname[bdir.len] != 0) {
struct hlist_node *n;
hlist_for_each_entry(diri, n, &pkg->owned_dirs, pkg_dirs_list) {
if (strncmp(diri->dir->dirname, bdir.ptr, bdir.len) == 0 &&
diri->dir->dirname[bdir.len] == 0)
break;
}
if (diri == NULL) {
apk_error("%s: File '%*s' entry without directory entry.\n",
pkg->name->name, name.len, name.ptr);
return -1;
}
ctx->diri = diri;
}
file = apk_db_file_get(db, name, ctx);
if (file == NULL) {
apk_error("%s: Failed to create fdb entry for '%*s'\n",
pkg->name->name, name.len, name.ptr);
return -1;
}
apk_db_file_set_owner(db, file, pkg, TRUE, ctx->file_pkg_node);
ctx->file_pkg_node = &file->pkg_files_list.next;
if (file->diri != NULL) {
opkg = file->diri->pkg;
if (opkg->name != pkg->name &&
strcmp(opkg->name->name, "busybox") != 0) {
apk_error("%s: Trying to overwrite %s owned by %s.\n",
pkg->name->name, ae->name, opkg->name->name);
return -1;
}
}
if (strncmp(file->filename, ".keep_", 6) == 0)
return 0;
if (ctx->file_diri_node == NULL)
ctx->file_diri_node = hlist_tail_ptr(&diri->owned_files);
apk_db_file_set_owner(db, file, diri, ctx->file_diri_node);
ctx->file_diri_node = &file->diri_files_list.next;
if ((file->dir->flags & APK_DBDIRF_PROTECTED) &&
if ((diri->dir->flags & APK_DBDIRF_PROTECTED) &&
csum_valid(file->csum) &&
apk_file_get_info(ae->name, &fi) == 0 &&
memcmp(file->csum, fi.csum, sizeof(csum_t)) != 0) {
@ -798,7 +835,7 @@ static int apk_db_install_archive_entry(void *_ctx,
* Extract to separate place */
snprintf(alt_name, sizeof(alt_name),
"%s/%s.apk-new",
dir->dirname, file->filename);
diri->dir->dirname, file->filename);
r = apk_archive_entry_extract(ae, is, alt_name);
} else {
r = apk_archive_entry_extract(ae, is, NULL);
@ -807,10 +844,19 @@ static int apk_db_install_archive_entry(void *_ctx,
} else {
if (name.ptr[name.len-1] == '/')
name.len--;
dir = apk_db_dir_get(db, name);
dir->mode = ae->mode & 07777;
dir->uid = ae->uid;
dir->gid = ae->gid;
printf("%s: %*s\n", pkg->name->name, name.len, name.ptr);
if (ctx->diri_node == NULL)
ctx->diri_node = hlist_tail_ptr(&pkg->owned_dirs);
ctx->diri = diri = apk_db_diri_new(db, pkg, name,
ctx->diri_node);
ctx->diri_node = &diri->pkg_dirs_list.next;
ctx->file_dir_node = NULL;
ctx->file_diri_node = NULL;
apk_db_diri_set(diri, ae->mode & 0777, ae->uid, ae->gid);
apk_db_diri_create(diri);
}
return r;
@ -819,21 +865,24 @@ static int apk_db_install_archive_entry(void *_ctx,
static void apk_db_purge_pkg(struct apk_database *db,
struct apk_package *pkg)
{
struct apk_db_dir_instance *diri;
struct apk_db_file *file;
struct hlist_node *c, *n;
char fn[1024];
struct hlist_node *dc, *dn, *fc, *fn;
char name[1024];
hlist_for_each_entry_safe(file, c, n, &pkg->owned_files, pkg_files_list) {
file->owner = NULL;
snprintf(fn, sizeof(fn), "%s/%s",
file->dir->dirname,
file->filename);
unlink(fn);
hlist_for_each_entry_safe(diri, dc, dn, &pkg->owned_dirs, pkg_dirs_list) {
hlist_for_each_entry_safe(file, fc, fn, &diri->owned_files, diri_files_list) {
file->diri = NULL;
snprintf(name, sizeof(name), "%s/%s",
diri->dir->dirname,
file->filename);
unlink(name);
__hlist_del(fc, &diri->owned_files.first);
apk_db_dir_unref(db, file->dir);
__hlist_del(c, &pkg->owned_files.first);
db->installed.stats.files--;
db->installed.stats.files--;
}
apk_db_dir_put(db, diri->dir);
__hlist_del(dc, &pkg->owned_dirs.first);
}
apk_pkg_set_state(db, pkg, APK_STATE_NO_INSTALL);
}