afe5cecd7f
This implements a near noop setpgid, unless the use is one equivalent to setsid, in which case it will behave as such. Also activates setpgrp, which is implemented in terms of setpgid. Change-Id: I84411cb1957351aa1d3985623cd9e69bdf6f8d4c
45 lines
711 B
C
45 lines
711 B
C
#include <sys/cdefs.h>
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#include <lib.h>
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#include "namespace.h"
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#include <string.h>
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#include <unistd.h>
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/*
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* "Smart" stub for now. This requires job control to be properly implemented.
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*/
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int setpgid(pid_t pid, pid_t pgid)
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{
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pid_t _pid, _pgid, sid, cpid;
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_pid = pid;
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_pgid = pgid;
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/* Who are we? */
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cpid = getpid();
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/* if zero, means current process. */
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if (_pid == 0) {
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_pid = cpid;
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}
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/* if zero, means given pid. */
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if (_pgid == 0) {
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_pgid = _pid;
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}
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/* right now we only support the equivalent of setsid(), which is
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* setpgid(0,0) */
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if ((_pid != cpid) || (_pgid != cpid)) {
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errno = EINVAL;
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return -1;
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}
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if (setsid() == cpid) {
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return 0;
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} else {
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return -1;
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}
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}
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