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filter_create_fd(3)		 util/filter.h		   filter_create_fd(3)

NAME
       filter_create_fd	 - Create a sub	process	and return the requested pipes

SYNOPSIS
       #include	<util/filter.h>

       NEOERR *filter_create_fd(const char *cmd, int *fdin, int	*fdout,	int *fderr,
				pid_t *pid);

ARGUMENTS
       cmd -> the sub command to execute.  Will	be executed with
       /bin/sh -c
       fdin -> pointer to return the stdin pipe, or NULL if you	don't
       want the	stdin pipe
       fdout ->	pointer	to return the stdout pipe, or NULL if you don't
       want the	stdout pipe
       fderr ->	pointer	to return the stderr pipe, or NULL if you don't
       want the	stderr pipe

DESCRIPTION
       filter_create_fd	and filter_create_fp are what popen

       been:  a	 mechanism to create sub processes and have pipes to all their
       input/output.  The concept was taken from mutt, though python has some-
       thing similar with popen3/popen4.  You control which pipes the function
       returns by the fdin/fdout/fderr arguments.  A NULL value	 means	"don't
       create  a pipe",	a pointer to an	int will cause the pipes to be created
       and the value of	the file descriptor stored in the int.	You will  have
       to close(2) the file descriptors	yourself.

RETURN VALUE
       fdin -> the stdin file descriptor of the	sub process
       fdout ->	the stdout file	descriptor of the sub process
       fderr ->	the stderr file	descriptor of the sub process
       pid -> the pid of the sub process

SEE ALSO
       filter_wait(3), filter_create_fp(3), filter_create_fd

ClearSilver			 12 July 2007		   filter_create_fd(3)

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUE | SEE ALSO

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