From da23ef0549d4205ca9b576cf6cce9a80d0c3e43a Mon Sep 17 00:00:00 2001 From: Stuart Swales Date: Tue, 22 Mar 2011 16:35:06 -0700 Subject: adfs: add hexadecimal filetype suffix option ADFS (FileCore) storage complies with the RISC OS filetype specification (12 bits of file type information is stored in the file load address, rather than using a file extension). The existing driver largely ignores this information and does not present it to the end user. It is desirable that stored filetypes be made visible to the end user to facilitate a precise copy of data and metadata from a hard disc (or image thereof) into a RISC OS emulator (such as RPCEmu) or to a network share which can be accessed by real Acorn systems. This patch implements a per-mount filetype suffix option (use -o ftsuffix=1) to present any filetype as a ,xyz hexadecimal suffix on each file. This type suffix is compatible with that used by RISC OS systems that access network servers using NFS client software and by RPCemu's host filing system. Signed-off-by: Stuart Swales Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/adfs/dir_fplus.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'fs/adfs/dir_fplus.c') diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c index a7f41da8115b..d9e3bee4e653 100644 --- a/fs/adfs/dir_fplus.c +++ b/fs/adfs/dir_fplus.c @@ -197,6 +197,24 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj) if (obj->name[i] == '/') obj->name[i] = '.'; + obj->filetype = -1; + + /* + * object is a file and is filetyped and timestamped? + * RISC OS 12-bit filetype is stored in load_address[19:8] + */ + if ((0 == (obj->attr & ADFS_NDA_DIRECTORY)) && + (0xfff00000 == (0xfff00000 & obj->loadaddr))) { + obj->filetype = (__u16) ((0x000fff00 & obj->loadaddr) >> 8); + + /* optionally append the ,xyz hex filetype suffix */ + if (ADFS_SB(dir->sb)->s_ftsuffix) + obj->name_len += + append_filetype_suffix( + &obj->name[obj->name_len], + obj->filetype); + } + dir->pos += 1; ret = 0; out: -- cgit v1.2.3