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Motiejus Jakštys 2022-02-23 06:19:40 +02:00 committed by Motiejus Jakštys
parent bb4b5eba03
commit b58063ef63
3 changed files with 21 additions and 20 deletions
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40
README.md
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@ -328,13 +328,13 @@ const PackedList = struct {
members: [length]varint,
}
const Groupmembers = PackedList;
const AdditionalGids = PackedList;
const Username2gids = PackedList;
```
A packed list is a list of varints.
Section `AdditionalGidsIndex` stores an index from `hash(username)` to `offset`
in AdditionalGids.
Section `Username2gidsIndex` stores an index from `hash(username)` to `offset`
in Username2gids.
Complete file structure
-----------------------
@ -348,23 +348,23 @@ storing plain `u32` for easier inspection.
Each section is padded to 64 bytes.
```
SECTION SIZE DESCRIPTION
Header 48 see "Turbonss header" section
bdz_gid2group ? gid->group bdz
bdz_uid2user ? uid->user bdz
bdz_groupname2group ? groupname->group bdz
bdz_name2user ? username->user bdz
idx_gid2group len(group)*32 bdz->offset gid2group
idx_groupname2group len(group)*32 bdz->offset groupname2group
idx_uid2user len(user)*32 bdz->offset uid2user
idx_name2user len(user)*32 bdz->offset name2user
idx_username2gids len(user)*32 Per-user gidlist index
ShellIndex len(shells)*2 Shell index array
ShellBlob <= 4032 Shell data blob (max 63*64 bytes)
Groups ? packed Group entries (8b padding)
Users ? packed User entries (8b padding)
Groupmembers ? per-group memberlist (32b padding)
AdditionalGids ? Per-user gidlist entries
STATUS SECTION SIZE DESCRIPTION
✅ Header 48 see "Turbonss header" section
bdz_gid2group ? gid->group bdz
bdz_uid2user ? uid->user bdz
bdz_groupname2group ? groupname->group bdz
bdz_name2user ? username->user bdz
idx_gid2group len(group)*29/8 bdz->offset Groups
idx_groupname2group len(group)*29/8 bdz->offset Groups
idx_uid2user len(user)*29/8 bdz->offset Users
idx_name2user len(user)*29/8 bdz->offset Users
idx_username2gids len(user)*29/8 bdz->offset Username2gids
✅ ShellIndex len(shells)*2 Shell index array
✅ ShellBlob <= 4032 Shell data blob (max 63*64 bytes)
Groups ? packed Group entries (8b padding)
✅ Users ? packed User entries (8b padding)
Groupmembers ? per-group memberlist (32b padding)
Username2gids ? Per-user gidlist entries (8b padding)
```
[git-subtrac]: https://apenwarr.ca/log/20191109

0
src/usergroups.zig → src/group.zig
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1
src/test_main.zig
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@ -3,5 +3,6 @@ test "turbonss test suite" {
_ = @import("shell.zig");
_ = @import("header.zig");
_ = @import("user.zig");
_ = @import("group.zig");
_ = @import("padding.zig");
}