Tracing the syscalls, shows that both gnu and rust mknod do the same
mknodat() call, but gnu's mknod later does an fchmod:
gnu-mknod.strace:43336 execve("/usr/bin/mknod", ["mknod", "--mode", "0666",
"null", "c", "1", "3"], 0x7ffe9cbf02c8 /* 25 vars */) = 0
gnu-mknod.strace:43336 mknodat(AT_FDCWD, "null", S_IFCHR|0666, makedev(0x1,
0x3)) = 0
gnu-mknod.strace:43336 fchmodat2(AT_FDCWD, "null", 0666, AT_SYMLINK_NOFOLLOW) = 0
rust-mknod.strace:42748 execve("/usr/bin/mknod", ["mknod", "--mode", "0666",
"null", "c", "1", "3"], 0x7ffe7b71bcf8 /* 25 vars */) = 0
rust-mknod.strace:42748 mknodat(AT_FDCWD, "null", S_IFCHR|0666, makedev(0x1,
0x3)) = 0
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https://bugs.launchpad.net/bugs/2116973
Title:
mknod doesn't respect --mode argument
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