[RFC PATCH 1/3] erofs-utils: fuse: set d_type for readdir

[Sheng Yong]

Set inode mode for libfuse readdir filler so that readdir count get
correct d_type.

Signed-off-by: Sheng Yong <shengyong at oppo.com>
---
 fuse/main.c           |  5 ++++-
 include/erofs/inode.h |  1 +
 lib/inode.c           | 19 +++++++++++++++++++
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/fuse/main.c b/fuse/main.c
index 95f939e..345bcb5 100644
--- a/fuse/main.c
+++ b/fuse/main.c
@@ -13,6 +13,7 @@
 #include "erofs/print.h"
 #include "erofs/io.h"
 #include "erofs/dir.h"
+#include "erofs/inode.h"

 struct erofsfuse_dir_context {
        struct erofs_dir_context ctx;
@@ -24,11 +25,13 @@ struct erofsfuse_dir_context {
 static int erofsfuse_fill_dentries(struct erofs_dir_context *ctx)
 {
        struct erofsfuse_dir_context *fusectx = (void *)ctx;
+       struct stat st = {0};
        char dname[EROFS_NAME_LEN + 1];

        strncpy(dname, ctx->dname, ctx->de_namelen);
        dname[ctx->de_namelen] = '\0';
-       fusectx->filler(fusectx->buf, dname, NULL, 0);
+       st.st_mode = erofs_ftype_to_dtype(ctx->de_ftype) << 12;
+       fusectx->filler(fusectx->buf, dname, &st, 0);
        return 0;
 }

diff --git a/include/erofs/inode.h b/include/erofs/inode.h
index 79b39b0..79b8d89 100644
--- a/include/erofs/inode.h
+++ b/include/erofs/inode.h
@@ -16,6 +16,7 @@ extern "C"
 #include "erofs/internal.h"

 unsigned char erofs_mode_to_ftype(umode_t mode);
+unsigned char erofs_ftype_to_dtype(unsigned int filetype);
 void erofs_inode_manager_init(void);
 unsigned int erofs_iput(struct erofs_inode *inode);
 erofs_nid_t erofs_lookupnid(struct erofs_inode *inode);
diff --git a/lib/inode.c b/lib/inode.c
index f192510..ce75014 100644
--- a/lib/inode.c
+++ b/lib/inode.c
@@ -43,6 +43,25 @@ unsigned char erofs_mode_to_ftype(umode_t mode)
        return erofs_ftype_by_mode[(mode & S_IFMT) >> S_SHIFT];
 }

+static const unsigned char erofs_dtype_by_ftype[EROFS_FT_MAX] = {
+       [EROFS_FT_UNKNOWN]      = DT_UNKNOWN,
+       [EROFS_FT_REG_FILE]     = DT_REG,
+       [EROFS_FT_DIR]          = DT_DIR,
+       [EROFS_FT_CHRDEV]       = DT_CHR,
+       [EROFS_FT_BLKDEV]       = DT_BLK,
+       [EROFS_FT_FIFO]         = DT_FIFO,
+       [EROFS_FT_SOCK]         = DT_SOCK,
+       [EROFS_FT_SYMLINK]      = DT_LNK
+};
+
+unsigned char erofs_ftype_to_dtype(unsigned int filetype)
+{
+       if (filetype >= EROFS_FT_MAX)
+               return DT_UNKNOWN;
+
+       return erofs_dtype_by_ftype[filetype];
+}
+
 #define NR_INODE_HASHTABLE     16384

 struct list_head inode_hashtable[NR_INODE_HASHTABLE];
--
2.25.1

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