[PATCH 3/7] erofs-utils: lib: adapt importer for filesystem tree dumping
Gao Xiang
hsiangkao at linux.alibaba.com
Tue Aug 19 00:47:37 AEST 2025
Convert erofs_mkfs_build_tree_from_path() and erofs_rebuild_dump_tree()
to erofs_importer_load_tree().
Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>
---
include/erofs/importer.h | 2 ++
include/erofs/inode.h | 7 ++--
lib/inode.c | 76 ++++++++++++++--------------------------
mkfs/main.c | 16 +++++----
4 files changed, 43 insertions(+), 58 deletions(-)
diff --git a/include/erofs/importer.h b/include/erofs/importer.h
index 7c29e03..541a86d 100644
--- a/include/erofs/importer.h
+++ b/include/erofs/importer.h
@@ -13,11 +13,13 @@ extern "C"
#include "internal.h"
struct erofs_importer_params {
+ char *source;
};
struct erofs_importer {
struct erofs_importer_params *params;
struct erofs_sb_info *sbi;
+ struct erofs_inode *root;
};
void erofs_importer_preset(struct erofs_importer_params *params);
diff --git a/include/erofs/inode.h b/include/erofs/inode.h
index ce86f59..9d05aaa 100644
--- a/include/erofs/inode.h
+++ b/include/erofs/inode.h
@@ -23,6 +23,8 @@ static inline struct erofs_inode *erofs_igrab(struct erofs_inode *inode)
return inode;
}
+struct erofs_importer;
+
u32 erofs_new_encode_dev(dev_t dev);
unsigned char erofs_mode_to_ftype(umode_t mode);
umode_t erofs_ftype_to_mode(unsigned int ftype, unsigned int perm);
@@ -38,12 +40,11 @@ struct erofs_dentry *erofs_d_alloc(struct erofs_inode *parent,
const char *name);
int erofs_allocate_inode_bh_data(struct erofs_inode *inode, erofs_blk_t nblocks);
bool erofs_dentry_is_wht(struct erofs_sb_info *sbi, struct erofs_dentry *d);
-int erofs_rebuild_dump_tree(struct erofs_inode *dir, bool incremental);
int __erofs_fill_inode(struct erofs_inode *inode, struct stat *st,
const char *path);
struct erofs_inode *erofs_new_inode(struct erofs_sb_info *sbi);
-struct erofs_inode *erofs_mkfs_build_tree_from_path(struct erofs_sb_info *sbi,
- const char *path);
+int erofs_importer_load_tree(struct erofs_importer *im, bool rebuild,
+ bool incremental);
struct erofs_inode *erofs_mkfs_build_special_from_fd(struct erofs_sb_info *sbi,
int fd, const char *name);
int erofs_fixup_root_inode(struct erofs_inode *root);
diff --git a/lib/inode.c b/lib/inode.c
index 3d64dcb..2599772 100644
--- a/lib/inode.c
+++ b/lib/inode.c
@@ -27,6 +27,7 @@
#include "erofs/compress_hints.h"
#include "erofs/blobchunk.h"
#include "erofs/fragments.h"
+#include "erofs/importer.h"
#include "liberofs_private.h"
#include "liberofs_metabox.h"
@@ -1275,9 +1276,8 @@ struct erofs_inode *erofs_new_inode(struct erofs_sb_info *sbi)
return inode;
}
-/* get the inode from the source path */
-static struct erofs_inode *erofs_iget_from_srcpath(struct erofs_sb_info *sbi,
- const char *path)
+static struct erofs_inode *erofs_iget_from_local(struct erofs_sb_info *sbi,
+ const char *path)
{
struct stat st;
struct erofs_inode *inode;
@@ -1644,7 +1644,7 @@ static int erofs_mkfs_handle_directory(struct erofs_inode *dir)
if (ret < 0 || ret >= PATH_MAX)
goto err_closedir;
- inode = erofs_iget_from_srcpath(sbi, buf);
+ inode = erofs_iget_from_local(sbi, buf);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
goto err_closedir;
@@ -1880,9 +1880,10 @@ static void erofs_mark_parent_inode(struct erofs_inode *inode,
inode->i_parent = (void *)((unsigned long)dir | 1);
}
-static int erofs_mkfs_dump_tree(struct erofs_inode *root, bool rebuild,
+static int erofs_mkfs_dump_tree(struct erofs_importer *im, bool rebuild,
bool incremental)
{
+ struct erofs_inode *root = im->root;
struct erofs_sb_info *sbi = root->sbi;
struct erofs_inode *dumpdir = erofs_igrab(root);
int err, err2;
@@ -1964,12 +1965,8 @@ static int erofs_mkfs_dump_tree(struct erofs_inode *root, bool rebuild,
}
struct erofs_mkfs_buildtree_ctx {
- struct erofs_sb_info *sbi;
- union {
- const char *path;
- struct erofs_inode *root;
- } u;
- bool incremental;
+ struct erofs_importer *im;
+ bool rebuild, incremental;
};
#ifndef EROFS_MT_ENABLED
#define __erofs_mkfs_build_tree erofs_mkfs_build_tree
@@ -1977,26 +1974,22 @@ struct erofs_mkfs_buildtree_ctx {
static int __erofs_mkfs_build_tree(struct erofs_mkfs_buildtree_ctx *ctx)
{
- bool from_path = !!ctx->sbi;
- struct erofs_inode *root;
- int err;
+ struct erofs_importer *im = ctx->im;
- if (from_path) {
- root = erofs_iget_from_srcpath(ctx->sbi, ctx->u.path);
- if (IS_ERR(root))
- return PTR_ERR(root);
- } else {
- root = ctx->u.root;
- }
+ if (!ctx->rebuild) {
+ struct erofs_importer_params *params = im->params;
+ struct stat st;
+ int err;
- err = erofs_mkfs_dump_tree(root, !from_path, ctx->incremental);
- if (err) {
- if (from_path)
- erofs_iput(root);
- return err;
+ err = lstat(params->source, &st);
+ if (err)
+ return -errno;
+
+ err = erofs_fill_inode(im->root, &st, params->source);
+ if (err)
+ return err;
}
- ctx->u.root = root;
- return 0;
+ return erofs_mkfs_dump_tree(im, ctx->rebuild, ctx->incremental);
}
#ifdef EROFS_MT_ENABLED
@@ -2024,7 +2017,8 @@ static int erofs_get_fdlimit(void)
static int erofs_mkfs_build_tree(struct erofs_mkfs_buildtree_ctx *ctx)
{
- struct erofs_sb_info *sbi = ctx->sbi ? ctx->sbi : ctx->u.root->sbi;
+ struct erofs_importer *im = ctx->im;
+ struct erofs_sb_info *sbi = im->sbi;
struct erofs_mkfs_dfops *q;
int err, err2;
void *retval;
@@ -2078,28 +2072,12 @@ fail:
}
#endif
-struct erofs_inode *erofs_mkfs_build_tree_from_path(struct erofs_sb_info *sbi,
- const char *path)
-{
- struct erofs_mkfs_buildtree_ctx ctx = {
- .sbi = sbi,
- .u.path = path,
- };
- int err;
-
- if (!sbi)
- return ERR_PTR(-EINVAL);
- err = erofs_mkfs_build_tree(&ctx);
- if (err)
- return ERR_PTR(err);
- return ctx.u.root;
-}
-
-int erofs_rebuild_dump_tree(struct erofs_inode *root, bool incremental)
+int erofs_importer_load_tree(struct erofs_importer *im, bool rebuild,
+ bool incremental)
{
return erofs_mkfs_build_tree(&((struct erofs_mkfs_buildtree_ctx) {
- .sbi = NULL,
- .u.root = root,
+ .im = im,
+ .rebuild = rebuild,
.incremental = incremental,
}));
}
diff --git a/mkfs/main.c b/mkfs/main.c
index 8b18b35..9039710 100644
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -1542,6 +1542,7 @@ int main(int argc, char **argv)
#endif
erofs_show_config();
+ importer_params.source = cfg.c_src_path;
err = erofs_importer_init(&importer);
if (err)
goto exit;
@@ -1694,12 +1695,12 @@ int main(int argc, char **argv)
if (cfg.c_extra_ea_name_prefixes)
erofs_xattr_flush_name_prefixes(&g_sbi);
- root = erofs_mkfs_build_tree_from_path(&g_sbi, cfg.c_src_path);
+ root = erofs_new_inode(&g_sbi);
if (IS_ERR(root)) {
err = PTR_ERR(root);
- root = NULL;
goto exit;
}
+ incremental_mode = false;
} else {
root = erofs_rebuild_make_root(&g_sbi);
if (IS_ERR(root)) {
@@ -1740,12 +1741,15 @@ int main(int argc, char **argv)
goto exit;
#endif
}
-
- err = erofs_rebuild_dump_tree(root, incremental_mode);
- if (err)
- goto exit;
}
+ importer.root = root;
+ err = erofs_importer_load_tree(&importer,
+ source_mode != EROFS_MKFS_SOURCE_LOCALDIR,
+ incremental_mode);
+ if (err)
+ goto exit;
+
if (tar_index_512b) {
if (!g_sbi.extra_devices) {
DBG_BUGON(1);
--
2.43.5
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