map EBADF to error values for read and write #5745
Merged
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Closes #3880.
I took a peek at the other syscall wrappers around
std.osand found inconsistencies on what EBADF means for them. Some declare EBADF as "not open file descriptor" (fchdir, lseek, llseek), or "not valid open file descriptor" (mmap), and others put their own meanings as well (fcntl, unlinkat, mkdirat, fstatat), which makes me think about if we should return error values on those calls too.Also, I didn't change anything regarding WASI errors.WASI maps errors as well.