std.os.linux: Implement clone3 #22616
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Implements clone3 based on the clone(2) man page.
I did my best to follow the convention that
std.os.linux
contains the straight syscall, andstd.posix
contains the syscall with error handling. If I broke some convention please let me know.I did not add the
ERESTARTNOINTR
error case because I am unsure where exactly to add the errno code (only to linux, everywhere and if so where all is everywhere). If that's a prerequisite for merging please point me to where to add the errno code.Finally in line with the other structs I found in
std.os.linux
I added minimal documentation to the fields and none to the flags. If I were to add the man page documentation it'd explode to a couple hundred lines which seems overkill.Closes #18508