rspawn.txt

[随书类]Dos6.0源代码

SUMMARY rspawnl rspawnv

#include <tools.h>

int rspawnl(fin, fout, pstrPathName, args)
char *fin, *fout, *pstrPathName;
char *args;

int rspawnv(fin, fout, pstrPathName, pargs)
char *fin, *fout, *pstrPathName;
char *pargs[];

DESCRIPTION

rspawnl and rpawnv start a child task with stdin/stdout redirected to fin/fout
if fin/fout are non-zero else stdin/stdout are not redirected.  It is
assumed that by duping fd 0 and 1, the child process will not attempt to
access handles other than 0, 1 and those that it has opened.  The child
is spawned using the C library spawnp interface with mode P_WAIT.
pstrPathName specifies the file to be executed.

RETURN VALUE

If fin/fout can not be redirected -1 is returned else both return the
same value as spawnp.

IMPLEMENTATION

rspawnl:
    return rspawnv(fin, fout, pstrPathName, &args);

rspawnv:
    do redirection
    ret = spawnvp(P_WAIT, pstrPathName, parg);
    undo redirection
    return ret

SEE ALSO


NOTE


EXAMPLE

#include <tools.h>

main(c, argv)
int c;
char *argv[];
{
}