From: Huang Jianan <huangjia...@oppo.com>
Signed-off-by: Huang Jianan <huangjia...@oppo.com>
Signed-off-by: Guo Weichao <guoweic...@oppo.com>
Signed-off-by: Gao Xiang <hsiang...@aol.com>
---
fuse/main.c | 2 ++
fuse/namei.c | 14 ++++++++++----
fuse/read.c | 26 ++++++++++++++++++++++++++
fuse/read.h | 1 +
include/erofs/internal.h | 1 +
5 files changed, 40 insertions(+), 4 deletions(-)
diff --git a/fuse/main.c b/fuse/main.c
index 5121e8325f32..563b2c378952 100644
--- a/fuse/main.c
+++ b/fuse/main.c
@@ -146,6 +146,7 @@ int erofs_getattr(const char *path, struct stat *stbuf)
stbuf->st_blocks = stbuf->st_size / EROFS_BLKSIZ;
stbuf->st_uid = v.i_uid;
stbuf->st_gid = v.i_gid;
+ stbuf->st_rdev = v.i_rdev;
stbuf->st_atime = sbi.build_time;
stbuf->st_mtime = sbi.build_time;
stbuf->st_ctime = sbi.build_time;
@@ -153,6 +154,7 @@ int erofs_getattr(const char *path, struct stat *stbuf)
}
static struct fuse_operations erofs_ops = {
+ .readlink = erofs_readlink,
.getattr = erofs_getattr,
.readdir = erofs_readdir,
.open = erofs_open,
diff --git a/fuse/namei.c b/fuse/namei.c
index cd747ad1be56..e79e77d1e3c9 100644
--- a/fuse/namei.c
+++ b/fuse/namei.c
@@ -11,6 +11,7 @@
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
+#include <sys/sysmacros.h>
#include "erofs/defs.h"
#include "erofs/print.h"
@@ -37,6 +38,13 @@ static uint8_t get_path_token_len(const char *path)
return len;
}
+static inline dev_t new_decode_dev(u32 dev)
+{
+ unsigned major = (dev & 0xfff00) >> 8;
+ unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
+ return makedev(major, minor);
+}
+
int erofs_iget_by_nid(erofs_nid_t nid, struct erofs_vnode *vi)
{
int ret;
@@ -63,13 +71,11 @@ int erofs_iget_by_nid(erofs_nid_t nid, struct erofs_vnode
*vi)
switch (vi->i_mode & S_IFMT) {
case S_IFBLK:
case S_IFCHR:
- /* fixme: add special devices support
- * vi->i_rdev = new_decode_dev(le32_to_cpu(v1->i_u.rdev));
- */
+ vi->i_rdev = new_decode_dev(le32_to_cpu(v1->i_u.rdev));
break;
case S_IFIFO:
case S_IFSOCK:
- /*fixme: vi->i_rdev = 0; */
+ vi->i_rdev = 0;
break;
case S_IFREG:
case S_IFLNK:
diff --git a/fuse/read.c b/fuse/read.c
index 446e0837cbc4..a55c0f2f78cd 100644
--- a/fuse/read.c
+++ b/fuse/read.c
@@ -70,3 +70,29 @@ int erofs_read(const char *path, char *buffer, size_t size,
off_t offset,
}
}
+int erofs_readlink(const char *path, char *buffer, size_t size)
+{
+ int ret;
+ erofs_nid_t nid;
+ size_t lnksz;
+ struct erofs_vnode v;
+
+ ret = walk_path(path, &nid);
+ if (ret)
+ return ret;
+
+ ret = erofs_iget_by_nid(nid, &v);
+ if (ret)
+ return ret;
+
+ lnksz = min((size_t)v.i_size, size - 1);
+
+ ret = erofs_read(path, buffer, lnksz, 0, NULL);
+ buffer[lnksz] = '\0';
+ if (ret != (int)lnksz)
+ return ret;
+
+ erofs_info("path:%s link=%s size=%llu", path, buffer, (unsigned long
long)lnksz);
+ return 0;
+}
+
diff --git a/fuse/read.h b/fuse/read.h
index 3f4af1495510..e901c607dc91 100644
--- a/fuse/read.h
+++ b/fuse/read.h
@@ -12,5 +12,6 @@
int erofs_read(const char *path, char *buffer, size_t size, off_t offset,
struct fuse_file_info *fi);
+int erofs_readlink(const char *path, char *buffer, size_t size);
#endif
diff --git a/include/erofs/internal.h b/include/erofs/internal.h
index f9e757316efe..77fa8d82c746 100644
--- a/include/erofs/internal.h
+++ b/include/erofs/internal.h
@@ -168,6 +168,7 @@ struct erofs_vnode {
uint16_t i_uid;
uint16_t i_gid;
uint16_t i_nlink;
+ uint32_t i_rdev;
/* if file is inline read inline data witch inode */
char *idata;
--
2.24.0
