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win32.c: volume_prefix_len
* win32/win32.c (rb_w32_read_reparse_point): name the prefix length to be dropped. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53706 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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1 changed files with 3 additions and 3 deletions
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@ -4843,13 +4843,13 @@ rb_w32_read_reparse_point(const WCHAR *path, rb_w32_reparse_buffer_t *rp,
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}
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else { /* IO_REPARSE_TAG_MOUNT_POINT */
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static const WCHAR *volume = L"Volume{";
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/* +4/-4 means to drop "\??\" */
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enum {volume_prefix_len = rb_strlen_lit("\\??\\")};
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name = ((char *)rp->MountPointReparseBuffer.PathBuffer +
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rp->MountPointReparseBuffer.SubstituteNameOffset +
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4 * sizeof(WCHAR));
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volume_prefix_len * sizeof(WCHAR));
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ret = rp->MountPointReparseBuffer.SubstituteNameLength;
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*len = ret / sizeof(WCHAR);
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ret -= 4 * sizeof(WCHAR);
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ret -= volume_prefix_len * sizeof(WCHAR);
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if (ret > sizeof(volume) - 1 * sizeof(WCHAR) &&
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memcmp(name, volume, sizeof(volume) - 1 * sizeof(WCHAR)) == 0)
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return -1;
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