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| author | Luke T. Shumaker <lukeshu@lukeshu.com> | 2024-10-02 21:09:07 -0600 |
|---|---|---|
| committer | Luke T. Shumaker <lukeshu@lukeshu.com> | 2024-10-02 21:09:07 -0600 |
| commit | 4b8a9d80d37c892695f102a48898fe1beacb593c (patch) | |
| tree | a8e56c0b91201897f0966256b3b7b1e039d647a6 /lib9p/9P2000.txt | |
| parent | ba8f3ddba03ab93158c93f77ef98137e1dd6e8e9 (diff) | |
lib9p: Add the DM bitfield
Diffstat (limited to 'lib9p/9P2000.txt')
| -rw-r--r-- | lib9p/9P2000.txt | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/lib9p/9P2000.txt b/lib9p/9P2000.txt index da9b223..3fb9e51 100644 --- a/lib9p/9P2000.txt +++ b/lib9p/9P2000.txt @@ -30,18 +30,37 @@ d = "len[4] len*(dat[1])" # string (u16le `n`, then `n` bytes of UTF-8) s = "len[2] len*(utf8[1])" +# "d"? mode - (file permissions and attributes) +bitfield dm 32 + 31/DIR + 30/APPEND + 29/EXCL + # DMMOUNT has been around in Plan 9 forever, but is + # undocumented, and is explicitly excluded from the 9P2000 + # draft RFC. As I understand it, DMMOUNT indicates that the + # file is mounted by the kernel as a 9P transport; that the + # kernel has a lock on doing I/O on it, so userspace can't do + # I/O on it. + 28/_PLAN9_MOUNT + 27/AUTH + 26/TMP + #... + 8/OWNER_R + 7/OWNER_W + 6/OWNER_X + 5/GROUP_R + 4/GROUP_W + 3/GROUP_X + 2/OTHER_R + 1/OTHER_W + 0/OTHER_X + # QID Type (see qid below) bitfield qt 8 7/DIR 6/APPEND 5/EXCL - # QTMOUNT has been around in Plan 9 forever, but is - # undocumented, and is explicitly excluded from the 9P2000 - # draft RFC. As I understand it, QTMOUNT indicates that the - # file is mounted by the kernel as a 9P transport; that the - # kernel has a lock on doing I/O on it, so userspace can't do - # I/O on it. - 4/_PLAN9_MOUNT + 4/_PLAN9_MOUNT # see DMMOUNT above 3/AUTH # Fun historical fact: QTTMP was a relatively late addition to # Plan 9, in 2003-12. @@ -73,7 +92,7 @@ stat = "stat_size[2]" "kern_type[2]" "kern_dev[4]" "file_qid[qid]" - "file_mode[4]" + "file_mode[dm]" "file_atime[4]" "file_mtime[4]" "file_size[8]" @@ -117,7 +136,7 @@ bitfield o 8 111/Rwalk = "nwqid[2] nwqid*(wqid[qid])" 112/Topen = "fid[4] mode[o]" 113/Ropen = "qid[qid] iounit[4]" -114/Tcreate = "fid[4] name[s] perm[4] mode[o]" +114/Tcreate = "fid[4] name[s] perm[dm] mode[o]" 115/Rcreate = "qid[qid] iounit[4]" 116/Tread = "fid[4] offset[8] count[4]" 117/Rread = "data[d]" # for directories data is the sequence "cnt*(entries[stat])" |