motiejus/turbonss
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make getgr* work

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Motiejus Jakštys 2022-07-14 19:14:47 +03:00
parent 8db43a537b
commit c883dcd52c
3 changed files with 23 additions and 22 deletions
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28
src/DB.zig
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@ -295,9 +295,9 @@ pub fn packCGroupNoMembers(group: *const PackedGroup, buf: []u8) error{BufferToo
buf[name_start + name.len] = 0;
return CGroup{
.gid = group.gid(),
.name = buf[name_start .. name_start + name.len :0].ptr,
.members = member_ptrs.ptr,
.gr_name = buf[name_start .. name_start + name.len :0].ptr,
.gr_gid = group.gid(),
.gr_mem = member_ptrs.ptr,
};
}
@ -364,9 +364,9 @@ pub fn packCGroup(self: *const DB, group: *const PackedGroup, buf: []u8) error{B
buf[buf_offset + name.len] = 0;
return CGroup{
.gid = group.gid(),
.name = buf[buf_offset .. buf_offset + name.len :0].ptr,
.members = member_ptrs.ptr,
.gr_name = buf[buf_offset .. buf_offset + name.len :0].ptr,
.gr_gid = group.gid(),
.gr_mem = member_ptrs.ptr,
};
}
@ -799,9 +799,9 @@ test "DB getgrnam/getgrgid" {
{
try testing.expectEqual(try db.getgrnam("doesnotexist", buf, false), null);
const all = (try db.getgrnam("all", buf, false)).?;
try testing.expectEqual(all.gid, 9999);
try testing.expectEqualStrings(all.name[0..4], "all\x00");
const members = all.members;
try testing.expectEqual(all.gr_gid, 9999);
try testing.expectEqualStrings(all.gr_name[0..4], "all\x00");
const members = all.gr_mem;
try testing.expectEqualStrings(mem.sliceTo(members[0].?, 0), "Name" ** 8);
try testing.expectEqualStrings(mem.sliceTo(members[1].?, 0), "root");
try testing.expectEqualStrings(mem.sliceTo(members[2].?, 0), "svc-bar");
@ -811,16 +811,16 @@ test "DB getgrnam/getgrgid" {
{
const all = (try db.getgrnam("all", buf, true)).?;
try testing.expectEqual(all.gid, 9999);
try testing.expectEqualStrings(all.name[0..4], "all\x00");
try testing.expectEqual(all.members[0], null);
try testing.expectEqual(all.gr_gid, 9999);
try testing.expectEqualStrings(all.gr_name[0..4], "all\x00");
try testing.expectEqual(all.gr_mem[0], null);
}
{
try testing.expectEqual(try db.getgrgid(42, buf, false), null);
const all = (try db.getgrgid(9999, buf, false)).?;
try testing.expectEqual(all.gid, 9999);
try testing.expectEqualStrings(all.name[0..3], "all");
try testing.expectEqual(all.gr_gid, 9999);
try testing.expectEqualStrings(all.gr_name[0..3], "all");
}
try testing.expectEqualStrings("", errc.unwrap().constSlice());

9
src/Group.zig
View File

@ -126,15 +126,16 @@ pub fn strlenZ(self: *const Group) usize {
}
pub const CGroup = extern struct {
gid: u32,
name: [*:0]const u8,
gr_name: [*:0]const u8,
gr_passwd: [*:0]const u8 = "x",
gr_gid: u32,
// Should be [*:null]align(1) const ?[*:0]const u8
// https://github.com/ziglang/zig/issues/7517
members: [*]align(1) const ?[*:0]const u8,
gr_mem: [*]align(1) const ?[*:0]const u8,
};
// size of the pointer to a single member.
pub const ptr_size = @sizeOf(meta.Child(meta.fieldInfo(CGroup, .members).field_type));
pub const ptr_size = @sizeOf(meta.Child(meta.fieldInfo(CGroup, .gr_mem).field_type));
const testing = std.testing;

8
src/libnss.zig
View File

@ -94,7 +94,7 @@ fn init() void {
//if (verbose)
// std.debug.print("opening '{s}'\n", .{fname});
const fname = turbonss_db_path;
const verbose = true;
const verbose = false;
const omit_members = true;
const file = File.open(fname) catch |err| {
@ -617,9 +617,9 @@ test "libnss getgrgid_r and getgrnam_r" {
}
fn testSvcGroup(g: CGroup) !void {
try testing.expectEqual(@as(u32, 100000), g.gid);
try testing.expectEqualStrings("service-group", mem.sliceTo(g.name, 0));
const members = g.members;
try testing.expectEqual(@as(u32, 100000), g.gr_gid);
try testing.expectEqualStrings("service-group", mem.sliceTo(g.gr_name, 0));
const members = g.gr_mem;
try testing.expect(members[0] != null);
try testing.expect(members[1] != null);
try testing.expectEqualStrings("root", mem.sliceTo(members[0].?, 0));