5.15-stable review patch. If anyone has any objections, please let me know.
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From: Gabriel Marcano gabemarcano@yahoo.com
[ Upstream commit 85a4780dc96ed9dd643bbadf236552b3320fae26 ]
Calling stat() from userspace correctly identified junctions in an NTFS partition as symlinks, but using readdir() and iterating through the directory containing the same junction did not identify the junction as a symlink.
When emitting directory contents, check FILE_ATTRIBUTE_REPARSE_POINT attribute to detect junctions and report them as links.
Signed-off-by: Gabriel Marcano gabemarcano@yahoo.com Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/dir.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c index fb438d6040409..d4d9f4ffb6d9a 100644 --- a/fs/ntfs3/dir.c +++ b/fs/ntfs3/dir.c @@ -309,7 +309,11 @@ static inline int ntfs_filldir(struct ntfs_sb_info *sbi, struct ntfs_inode *ni, return 0; }
- dt_type = (fname->dup.fa & FILE_ATTRIBUTE_DIRECTORY) ? DT_DIR : DT_REG; + /* NTFS: symlinks are "dir + reparse" or "file + reparse" */ + if (fname->dup.fa & FILE_ATTRIBUTE_REPARSE_POINT) + dt_type = DT_LNK; + else + dt_type = (fname->dup.fa & FILE_ATTRIBUTE_DIRECTORY) ? DT_DIR : DT_REG;
return !dir_emit(ctx, (s8 *)name, name_len, ino, dt_type); }