mknod(2) 需要 FreeBSD 上的超级用户，用什么来代替？
我正在从 Linux 移植到 FreeBSD，并且遇到了 ::mknod() 失败并显示 errno：
[EINVAL] Creating anything else than a block or character spe-
cial file (or a whiteout) is not supported.
但我也看到它在手册页的前面指出：
The mknod() system call requires super-user privileges.
那么什么是一个可以在 Linux 和 FreeBSD 上工作的良好替代调用？
我的代码片段发生这种情况：
mode_t mode
= S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
if (::mknod(_resolvedName, mode, 0)) {
我的目标是创建一个具有正确权限的空文件。
I am porting from Linux to FreeBSD and have run into ::mknod() failing with errno:
[EINVAL] Creating anything else than a block or character spe-
cial file (or a whiteout) is not supported.
But I also see it states earlier on the man page:
The mknod() system call requires super-user privileges.
So what would be a good replacement call to use that will work on both Linux and FreeBSD?
My code snippet where this occurs:
mode_t mode
= S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
if (::mknod(_resolvedName, mode, 0)) {
My objective is to create an empty file with the correct permissions.
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根据
mknod(2)的 Linux 手册页：因此，您以这种方式使用它是不可移植的，并且不推荐。
然而，
open(2)似乎具有您需要的功能，并且会创建一个可移植的大小为零的文件。它接受mode_t类型的第三个参数，您可以使用该参数设置权限。According to the Linux man page for
mknod(2):So your use of it in this manner is non-portable and not recommended.
open(2), however, seems to have the functionality you need, and will create a file with zero size, portably. It accepts a third parameter of typemode_t, with which you can set permissions.为什么不：
Why not: