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Can you introduce me some reference about this topic?

thanks!

O! so the fd0 is also first points to a file structure right ?

thanks,you really help me a lot with my final exam.

:D

sorry i don't know how it become like this .....hope i will be understood!

you mean u-ofile[0] connects to struct tty?

or it still connects first to struct file then to inode?

if it is an...

you mean u-ofile[0] connects to struct tty?

or it still connects first to struct file then to inode?

if it is an ordinary file it will connect like this:

process pa
u-ofile
...

As I read the source code of unix I wonder where u_ofile[0](it should be stdout) link to ?

Does it link to a file structure like ordinary files? :confused:

Do you mean when OS invoke printf(),it will invoke setbuf()? :confused:

and does it mean that setbuf() will set a buffer flag to determine
if it is line-buffered or block-buffered?


i have...

thanks

but i still have some doubts!
that is where does the printf save it's buffer and how does the buffer being copied?
does the process save it's buffer in it's struct user?or in it's data...

thanks for your help!


but,where can i download it?

Thanks!

And now i change my program like this:



Main(void)
{
int I;
printf(¡°%d,%d,%d \n¡±,getpid(),getppid(),getpgid(0));
for(I=0;I<2;I++)
if (fork()==0)
printf(¡°%d\t%d,%d,%d...

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