ipc增加测试

mkrtos_user/lib/cpio/cpiofs.c

@@ -0,0 +1,82 @@
+
+#include "u_types.h"
+#include "cpiofs.h"
+#include "u_util.h"
+#include <string.h>
+
+int htoi(char *str, int len)
+{
+    int n = 0;
+    int i = 0;
+
+    if (str == NULL || len <= 0)
+        return -1;
+    for (i = 0; i < len; i++)
+    {
+        if (str[i] != '0')
+        {
+            break;
+        }
+    }
+    str += i;
+    while (1)
+    {
+        if (*str >= '0' && *str <= '9')
+        {
+            n = 16 * n + (*str - '0');
+        }
+        else if (*str >= 'A' && *str <= 'F') // 十六进制还要判断字符是不是在A-F或者a-f之间
+        {
+            n = 16 * n + (*str - 'A' + 10);
+        }
+        else if (*str >= 'a' && *str <= 'f')
+        {
+            n = 16 * n + (*str - 'a' + 10);
+        }
+        else
+        {
+            break;
+        }
+        str++;
+        i++;
+        if (i >= len)
+        {
+            break;
+        }
+    }
+    return n;
+}
+
+umword_t cpio_find_file(umword_t st, umword_t en, const char *name)
+{
+    uint8_t rByte;
+    int32_t bk_inx;
+    cpio_fs_t *file_info;
+
+    for (umword_t i = st; st < en;)
+    {
+        file_info = (cpio_fs_t *)i;
+
+        if (check_magic(file_info) < 0)
+        {
+            return 0;
+        }
+        int name_size = htoi(file_info->c_namesize, 8);
+        const char *f_name = (char *)(i + sizeof(cpio_fs_t));
+        if (strcmp(f_name, name) == 0)
+        {
+            return (umword_t)(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4));
+        }
+
+        if (strcmp("TRAILER!!", f_name) == 0)
+        {
+            return 0;
+        }
+        int file_size = htoi(file_info->c_filesize, 8);
+
+        i = ALIGN(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4) +
+                      file_size,
+                  4);
+    }
+    return 0;
+}