mirror of
https://github.com/koreader/koreader
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19 lines
528 B
Lua
19 lines
528 B
Lua
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-- Stupid wrapper so that we can send simple ntx_io ioctls from shell scripts...
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local ffi = require("ffi")
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local bor = bit.bor
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local C = ffi.C
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require("ffi/posix_h")
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assert(#arg == 2, "must pass an ioctl command & an ioctl argument")
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local ioc_cmd = tonumber(arg[1])
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local ioc_arg = tonumber(arg[2])
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local fd = C.open("/dev/ntx_io", bor(C.O_RDONLY, C.O_NONBLOCK, C.O_CLOEXEC))
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assert(fd ~= -1, "cannot open ntx_io character device")
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assert(C.ioctl(fd, ioc_cmd, ffi.cast("int", ioc_arg)) == 0, "ioctl failed")
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C.close(fd)
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