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//! Attachment utilities
const afs = @import("../../fs/afs/afs.zig");
const ahci = @import("../../drivers/ahci/ahci.zig");
const attachment = @import("../../kata/attachment.zig");
const heap = @import("../../memory/heap.zig");
const kata_limits = @import("../../common/limits/kata.zig");
const kata_mod = @import("../../kata/kata.zig");
const location_util = @import("../fs/location.zig");
pub fn allocate(kata: *kata_mod.Kata) !u32 {
var i: u32 = 3;
while (i < kata_limits.MAX_ATTACHMENTS) : (i += 1) {
if (kata.attachments[i] == null) {
return i;
}
}
return error.TooManyAttachments;
}
pub fn seal(kata: *kata_mod.Kata, fd: u32, fs: ?*afs.AFS(ahci.BlockDevice)) void {
const entry = kata.attachments[fd] orelse return;
if (entry.attachment_type == .Unit and entry.dirty) {
if (entry.buffer) |buffer| {
if (fs) |filesystem| {
var full_location_buf: [512]u8 = undefined;
const full_location = location_util.resolve(kata, entry.location[0..entry.location_len], &full_location_buf);
filesystem.mark_unit(full_location, buffer) catch {};
}
heap.free(@ptrCast(buffer.ptr), buffer.len);
}
}
attachment.free(entry);
kata.attachments[fd] = null;
}
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