truss: Add preadv(2) and pwritev(2).
We already knew how to decode readv(2)/writev(2). Add the versions with an offset. Reviewed by: asomers Differential Revision: https://reviews.freebsd.org/D27531 MFC after: 2 weeks
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@ -428,6 +428,9 @@ static const struct syscall_decode decoded_syscalls[] = {
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{ .name = "pread", .ret_type = 1, .nargs = 4,
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.args = { { Int, 0 }, { BinString | OUT, 1 }, { Sizet, 2 },
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{ QuadHex, 3 } } },
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{ .name = "preadv", .ret_type = 1, .nargs = 4,
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.args = { { Int, 0 }, { Iovec | OUT, 1 }, { Int, 2 },
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{ QuadHex, 3 } } },
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{ .name = "procctl", .ret_type = 1, .nargs = 4,
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.args = { { Idtype, 0 }, { Quad, 1 }, { Procctl, 2 }, { Ptr, 3 } } },
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{ .name = "ptrace", .ret_type = 1, .nargs = 4,
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@ -435,6 +438,9 @@ static const struct syscall_decode decoded_syscalls[] = {
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{ .name = "pwrite", .ret_type = 1, .nargs = 4,
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.args = { { Int, 0 }, { BinString | IN, 1 }, { Sizet, 2 },
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{ QuadHex, 3 } } },
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{ .name = "pwritev", .ret_type = 1, .nargs = 4,
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.args = { { Int, 0 }, { Iovec | IN, 1 }, { Int, 2 },
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{ QuadHex, 3 } } },
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{ .name = "quotactl", .ret_type = 1, .nargs = 4,
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.args = { { Name, 0 }, { Quotactlcmd, 1 }, { Int, 2 }, { Ptr, 3 } } },
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{ .name = "read", .ret_type = 1, .nargs = 3,
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