feat: 图形桌面 + 独立工具应用 + Sealed Arc UI 设计系统 | desktop.elf窗口管理器/6个工具应用(bash/editor/fileman/browser/curl/ping)/desktop_app.h公共头文件/Sealed Arc设计系统/DRR完整实现/Process增强/DSK启动改为加载desktop.elf/Shell重构/开发文档

CODE/UTSM/core/process.c

@@ -1,11 +1,126 @@
+/* process.c — UTSM 进程上下文管理
+ *
+ * 进程表分配/释放、capability table 操作、crypto context 管理。
+ */
+
 #include <utsm/process.h>
 #include <utsm/drr.h>
+#include <utsm/arena.h>
+#include <utsm/log.h>
+
+/* ---- 进程表 ---- */
+static utsm_process_context g_process_table[UTSM_MAX_PROCESSES];
+static u32 g_process_count;
+
+void utsm_process_init(void) {
+    log_info("[UTSM] process table init");
+    for (u32 i = 0; i < UTSM_MAX_PROCESSES; i++) {
+        g_process_table[i].state = UTSM_PROC_UNUSED;
+        g_process_table[i].process_slot = i;
+        g_process_table[i].cap_table.count = 0;
+        g_process_table[i].cap_table.generation = 0;
+    }
+    g_process_count = 0;
+}
 
 void utsm_process_create_test(utsm_process_context *process, u64 seed) {
     process->process_uuid = uuid_make_test(seed);
     process->crypto_epoch = 1;
     process->recovery_generation = drr_recovery_generation();
-    process->capability_table_slot = 0;
     process->capability_count = 0;
-    process->flags = 0;
+    process->flags = UTSM_PROC_F_KERNEL;
+    process->state = UTSM_PROC_ACTIVE;
+    process->hot_segment_slot = 0;
+    process->drr_recovery_gen = drr_recovery_generation();
+
+    /* 初始化 crypto context */
+    process->crypto_ctx.crypto_epoch = 1;
+    process->crypto_ctx.key_derivation_seed = seed ^ 0x9e3779b97f4a7c15ULL;
+    process->crypto_ctx.pckc_hot_hint = 0;
+
+    /* 初始化 capability table */
+    process->cap_table.count = 0;
+    process->cap_table.generation = 1;
+}
+
+utsm_process_context *utsm_process_alloc(void) {
+    for (u32 i = 0; i < UTSM_MAX_PROCESSES; i++) {
+        if (g_process_table[i].state == UTSM_PROC_UNUSED) {
+            utsm_process_context *p = &g_process_table[i];
+            p->process_slot = i;
+            p->state = UTSM_PROC_ACTIVE;
+            p->crypto_epoch = 1;
+            p->recovery_generation = drr_recovery_generation();
+            p->capability_count = 0;
+            p->flags = 0;
+            p->hot_segment_slot = 0;
+            p->drr_recovery_gen = drr_recovery_generation();
+            p->cap_table.count = 0;
+            p->cap_table.generation = 1;
+            p->crypto_ctx.crypto_epoch = 1;
+            p->crypto_ctx.key_derivation_seed = 0;
+            p->crypto_ctx.pckc_hot_hint = 0;
+            g_process_count++;
+            return p;
+        }
+    }
+    return NULL;
+}
+
+void utsm_process_free(utsm_process_context *process) {
+    if (!process) return;
+    process->state = UTSM_PROC_UNUSED;
+    process->cap_table.count = 0;
+    process->capability_count = 0;
+    if (g_process_count > 0) g_process_count--;
+}
+
+utsm_process_context *utsm_process_get(u32 slot) {
+    if (slot >= UTSM_MAX_PROCESSES) return NULL;
+    return &g_process_table[slot];
+}
+
+/* ---- Capability 操作 ---- */
+int utsm_process_grant_cap(utsm_process_context *process, utsm_capability cap) {
+    if (!process || process->cap_table.count >= UTSM_MAX_CAPABILITIES) {
+        return -1;
+    }
+    u32 idx = process->cap_table.count;
+    process->cap_table.caps[idx] = cap;
+    process->cap_table.count++;
+    process->capability_count = process->cap_table.count;
+    process->cap_table.generation++;
+    return 0;
+}
+
+int utsm_process_revoke_cap(utsm_process_context *process, u32 cap_index) {
+    if (!process || cap_index >= process->cap_table.count) {
+        return -1;
+    }
+    /* 将最后一个 capability 移到被删除的位置 */
+    u32 last = process->cap_table.count - 1;
+    if (cap_index != last) {
+        process->cap_table.caps[cap_index] = process->cap_table.caps[last];
+    }
+    process->cap_table.count--;
+    process->capability_count = process->cap_table.count;
+    process->cap_table.generation++;
+    return 0;
+}
+
+utsm_capability *utsm_process_get_cap(utsm_process_context *process, u32 cap_index) {
+    if (!process || cap_index >= process->cap_table.count) {
+        return NULL;
+    }
+    return &process->cap_table.caps[cap_index];
+}
+
+/* ---- Crypto context 操作 ---- */
+void utsm_process_advance_epoch(utsm_process_context *process) {
+    if (!process) return;
+    process->crypto_epoch++;
+    process->crypto_ctx.crypto_epoch = process->crypto_epoch;
+    /* 清空 PCKC 热提示（epoch 变化后旧缓存无效） */
+    process->crypto_ctx.pckc_hot_hint = 0;
+    process->hot_segment_slot = 0;
 }