Re: [Tpctl-users] thinkpad modules & udev

[Charles L. <cl...@gh...>]

fago said:
>
>> You can always run tpctl under strace and see if it is trying to open
>> other device nodes.
>
> so i tried strace
>
>         stat64("/dev/thinkpad/thinkpad", 0xbffffb3c) =3D -1 ENOTDIR (No=
t a
>         directory)
>         stat64("/dev/thinkpad", {st_mode=3DS_IFCHR|0660,
>         st_rdev=3Dmakedev(10, 170), ...}) =3D 0
>         open("/dev/thinkpad", O_RDONLY)         =3D 3
>
> tpctl is finding the correct device.
> the next thing concerning a device:
>
> fstat64(1, {st_mode=3DS_IFCHR|0600, st_rdev=3Dmakedev(136, 1), ...}) =3D=
 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) =3D 0x40018000
> write(1, "tpctl: SMAPI BIOS error 0x86 (\"f"..., 71) =3D 71
>
>
> so is it looking for a device 136,1 or does it not need a device?

No, (136,1) is the result of the fstat call (fstat fills in the structure=
,
but strace prints it like it was passed in).

That's probably not relevant, though, because file descriptor 1 is usuall=
y
standard output. (And the mmap2 is just part of the way glibc implements
malloc.)

--=20
Charles Lepple
cl...@gh...