* [ECOS] Changing RedBoot's sys_read() function
@ 2005-07-22 17:08 Moseley, Drew
2005-07-22 19:31 ` Mark Salter
0 siblings, 1 reply; 2+ messages in thread
From: Moseley, Drew @ 2005-07-22 17:08 UTC (permalink / raw)
To: ecos-discuss
I am considering making some changes to the sys_read() function in
packages/redboot/current/src/syscall.c to better handle console I/O.
(ie local echo, backspace handling, etc.)
Is this function only called for console I/O? If not is there some way
to
determine if the fd being read is the console?
thanks,
Drew
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [ECOS] Changing RedBoot's sys_read() function
2005-07-22 17:08 [ECOS] Changing RedBoot's sys_read() function Moseley, Drew
@ 2005-07-22 19:31 ` Mark Salter
0 siblings, 0 replies; 2+ messages in thread
From: Mark Salter @ 2005-07-22 19:31 UTC (permalink / raw)
To: Moseley, Drew; +Cc: ecos-discuss
On Fri, 2005-07-22 at 10:08 -0700, Moseley, Drew wrote:
> I am considering making some changes to the sys_read() function in
> packages/redboot/current/src/syscall.c to better handle console I/O.
> (ie local echo, backspace handling, etc.)
>
> Is this function only called for console I/O? If not is there some way
> to
> determine if the fd being read is the console?
sys_read() assumes that it only gets called to read stdin in which case
fd is 0. As long as sys_open() always returns an error, that's a good
assumption.
--Mark
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2005-07-22 17:08 [ECOS] Changing RedBoot's sys_read() function Moseley, Drew
2005-07-22 19:31 ` Mark Salter
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