Add more uses of memdup, mempcpy

[wimlib] / src / win32_apply.c

diff --git a/src/win32_apply.c b/src/win32_apply.c
index c91315cf2f162695d24d9703dc03f8b40c6de95f..39090d6910e0820501ade2ade8f89daf68f2cfd0 100644 (file)
--- a/src/win32_apply.c
+++ b/src/win32_apply.c
@@ -57,6 +57,7 @@ L"If you are not running this program as the administrator, you may\n"
 
 static int
 win32_extract_try_rpfix(u8 *rpbuf,
+                       u16 *rpbuflen_p,
                        const wchar_t *extract_root_realpath,
                        unsigned extract_root_realpath_nchars)
 {
@@ -74,8 +75,7 @@ win32_extract_try_rpfix(u8 *rpbuf,
        size_t new_print_name_nchars;
        utf16lechar *p;
 
-       ret = parse_reparse_data(rpbuf, 8 + le16_to_cpu(*(u16*)(rpbuf + 4)),
-                                &rpdata);
+       ret = parse_reparse_data(rpbuf, *rpbuflen_p, &rpdata);
        if (ret)
                return ret;
 
@@ -106,8 +106,7 @@ win32_extract_try_rpfix(u8 *rpbuf,
        p = new_target;
        if (stripped_nchars == 6) {
                /* Include \??\ prefix if it was present before */
-               wmemcpy(p, L"\\??\\", 4);
-               p += 4;
+               p = wmempcpy(p, L"\\??\\", 4);
        }
 
        /* Print name excludes the \??\ if present. */
@@ -119,12 +118,10 @@ win32_extract_try_rpfix(u8 *rpbuf,
                *p++ = extract_root_realpath[1];
        }
        /* Copy the rest of the extract root */
-       wmemcpy(p, extract_root_realpath + 2, extract_root_realpath_nchars - 2);
-       p += extract_root_realpath_nchars - 2;
+       p = wmempcpy(p, extract_root_realpath + 2, extract_root_realpath_nchars - 2);
 
        /* Append the stripped target */
-       wmemcpy(p, stripped_target, stripped_target_nchars);
-       p += stripped_target_nchars;
+       p = wmempcpy(p, stripped_target, stripped_target_nchars);
        new_target_nchars = p - new_target;
        new_print_name_nchars = p - new_print_name;
 
@@ -138,7 +135,7 @@ win32_extract_try_rpfix(u8 *rpbuf,
        rpdata.substitute_name_nbytes = new_target_nchars * sizeof(utf16lechar);
        rpdata.print_name = new_print_name;
        rpdata.print_name_nbytes = new_print_name_nchars * sizeof(utf16lechar);
-       return make_reparse_buffer(&rpdata, rpbuf);
+       return make_reparse_buffer(&rpdata, rpbuf, rpbuflen_p);
 }
 
 /* Wrapper around the FSCTL_SET_REPARSE_POINT ioctl to set the reparse data on
@@ -151,7 +148,7 @@ win32_set_reparse_data(HANDLE h,
                       struct apply_args *args)
 {
        int ret;
-       u8 rpbuf[REPARSE_POINT_MAX_SIZE];
+       u8 rpbuf[REPARSE_POINT_MAX_SIZE] _aligned_attribute(8);
        DWORD bytesReturned;
        u16 rpbuflen;
 
@@ -167,6 +164,7 @@ win32_set_reparse_data(HANDLE h,
            !inode->i_not_rpfixed)
        {
                ret = win32_extract_try_rpfix(rpbuf,
+                                             &rpbuflen,
                                              args->target_realpath,
                                              args->target_realpath_len);
                if (ret)