ksh-devel
Korn Shell development environment
NAME
spawnveg - process spawn with process group and session control
SYNOPSIS
#include <ast.h>
int spawnveg(const char* command, char** argv, char** envv, pid_t pgid);
DESCRIPTION
spwanveg
combines fork(2), exec(2), setpgid(2) and setsid(2) into a single call.
<0 The new process becomes a session leader. is called in the child context. |
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0 The new process is in the callers process group. |
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1 The new process becomes a process group leader. |
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>1 The new process joins the process group pgid. |
COMMENTS
It is possible to code all process creation (except for vfork(2) hack like in csh(1)) using
spawnveg
The proc(3) routines and ksh(1) do this on systems that don’t support fork(2). This makes porting to NT and Windows a snap: a simple iffe(1) probe provides a
spawnveg
implementation using the NT or Windows process primitives.