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Add test for ioctl(SIOCGIFCONF) and polyfill on BSDs
- Use nullness checks when calling weakly linked functions. - Avoid typedef for reasons described in Linux Kernel style guide. - Avoid enum in in Windows headers. Earlier in Cosmo's history all one hundred files in libc/nt/enum/ used to be enums and it resulted in gigabytes of DWARF data almost as large as everything else in the codebase combined. - Bitfields aren't our friends. They have frequent ABI breakages, inconsistent arithmetic across compilers, and different endianness between cpus. Compiler authors also haven't invested much roi into making bit fields go fast so they produce poor assembly. - Use memccpy() instead of strncpy() or snprintf() for length-bounded copying of C strings. strncpy() is a misunderstood function and snprintf() is awesome but memccpy() deserves more love.
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@ -1497,14 +1497,18 @@ syscon modem TIOCMODG 0 0x40047403 0 0x4004746a 0x4004746a -1 # wut
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syscon modem TIOCMODS 0 0x80047404 0 0x8004746d 0x8004746d -1 # wut
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syscon modem TIOCMSDTRWAIT 0 0x8004745b 0x8004745b 0 0 -1 # wut
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syscon iff IFF_BROADCAST 2 2 2 2 2 2 # consensus
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syscon iff IFF_LOOPBACK 8 8 8 8 8 4 # unix consensus
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syscon iff IFF_MULTICAST 0x1000 0x8000 0x8000 0x8000 0x8000 0x10 # bsd consensus
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syscon iff IFF_ALLMULTI 0x0200 0x0200 0x0200 0x0200 0x0200 0 # unix consensus
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syscon iff IFF_DEBUG 4 4 4 4 4 0 # unix consensus
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syscon iff IFF_NOARP 0x80 0x80 0x80 0x80 0x80 0 # unix consensus
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syscon iff IFF_POINTOPOINT 0x10 0x10 0x10 0x10 0x10 0 # unix consensus
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syscon iff IFF_PROIFF 0x0100 0x0100 0x0100 0x0100 0x0100 0 # unix consensus
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# ioctl(SIOCGIFFLAGS) Network Interface Flags
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#
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# group name GNU/Systemd XNU's Not UNIX! FreeBSD OpenBSD NetBSD The New Technology Commentary
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syscon iff IFF_UP 1 1 1 1 1 1 # unix consensus
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syscon iff IFF_BROADCAST 2 2 2 2 2 2 # valid broadcast address set; consensus
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syscon iff IFF_DEBUG 4 4 4 4 4 4 # faked nt; consensus
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syscon iff IFF_LOOPBACK 8 8 8 8 8 4 # is loopback device; consensus
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syscon iff IFF_MULTICAST 0x1000 0x8000 0x8000 0x8000 0x8000 0x1000 # supports multicast; faked nt; bsd consensus
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syscon iff IFF_ALLMULTI 0x0200 0x0200 0x0200 0x0200 0x0200 0x0200 # receive all multicast packets; faked nt; unix consensus
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syscon iff IFF_NOARP 0x80 0x80 0x80 0x80 0x80 0x80 # faked nt as linux; unix consensus
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syscon iff IFF_POINTOPOINT 0x10 0x10 0x10 0x10 0x10 0x10 # point-to-point; faked nt as linux; unix consensus
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syscon iff IFF_PROMISC 0x100 0x100 0x100 0x100 0x100 0 # in packet capture mode; unix consensus
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syscon iff IFF_RUNNING 0x40 0x40 0x40 0x40 0x40 0 # unix consensus
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syscon iff IFF_NOTRAILERS 0x20 0x20 0 0 0 0
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syscon iff IFF_AUTOMEDIA 0x4000 0 0 0 0 0
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