/* kill (built-in) a job */
int
j_kill(const char *cp, int sig)
{
Job *j;
int rv = 0;
int ecode;
sigset_t omask;
sigprocmask(SIG_BLOCK, &sm_sigchld, &omask);
if ((j = j_lookup(cp, &ecode)) == (Job *) 0) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
bi_errorf("%s: %s", cp, lookup_msgs[ecode]);
return 1;
}
if (j->pgrp == 0) {
if (kill_job(j, sig) < 0) {
bi_errorf("%s: %s", cp, strerror(errno));
rv = 1;
}
} else {
if (killpg(j->pgrp, sig) < 0) {
bi_errorf("%s: %s", cp, strerror(errno));
rv = 1;
}
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return rv;
}
int
j_writei(struct inode *ip, char *src, uint off, uint n)
{
uint tot, m, i, j;
struct buf *tbp;
if(ip->type == T_DEV){
if(ip->major < 0 || ip->major >= NDEV || !devsw[ip->major].write)
return -1;
return devsw[ip->major].write(ip, src, n);
}
if(off + n < off)
return -1;
if(off + n > MAXFILE*BSIZE)
n = MAXFILE*BSIZE - off;
/* REAL CODE STARTS HERE */
// j_init();
b_index = 0; // new xfer, start keeping track of open bufs
/* allocate all space needed */
for(i=0, j=off; i<n; i+=m, j+=m){
j_bmap(ip, j/BSIZE);
m = min(n - i, BSIZE - j%BSIZE);
}
for(tot=0; tot<n; tot+=m, off+=m, src+=m){
bp[b_index] = bread(ip->dev, j_lookup(ip, off/BSIZE));
m = min(n - tot, BSIZE - off%BSIZE);
memmove(bp[b_index]->data + off%BSIZE, src, m);
b_index++;
}
if(n > 0 && off > ip->size){
ip->size = off;
j_iupdate(ip);
}
journal_start();
panic("octomom");
for(i = 0; i < b_index; i++){
bwrite(bp[i]);
brelse(bp[i]);
}
journal_end();
return n;
}
/* wait for child, interruptable. */
int
waitfor(const char *cp, int *sigp)
{
int rv;
Job *j;
int ecode;
int flags = JW_INTERRUPT|JW_ASYNCNOTIFY;
sigset_t omask;
sigprocmask(SIG_BLOCK, &sm_sigchld, &omask);
*sigp = 0;
if (cp == (char *) 0) {
/* wait for an unspecified job - always returns 0, so
* don't have to worry about exited/signaled jobs
*/
for (j = job_list; j; j = j->next)
/* at&t ksh will wait for stopped jobs - we don't */
if (j->ppid == procpid && j->state == PRUNNING)
break;
if (!j) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return -1;
}
} else if ((j = j_lookup(cp, &ecode))) {
/* don't report normal job completion */
flags &= ~JW_ASYNCNOTIFY;
if (j->ppid != procpid) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return -1;
}
} else {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
if (ecode != JL_NOSUCH)
bi_errorf("%s: %s", cp, lookup_msgs[ecode]);
return -1;
}
/* at&t ksh will wait for stopped jobs - we don't */
rv = j_waitj(j, flags, "jw:waitfor");
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
if (rv < 0) /* we were interrupted */
*sigp = 128 + -rv;
return rv;
}
/* list jobs for jobs built-in */
int
j_jobs(const char *cp, int slp,
int nflag) /* 0: short, 1: long, 2: pgrp */
{
Job *j, *tmp;
int how;
int zflag = 0;
sigset_t omask;
sigprocmask(SIG_BLOCK, &sm_sigchld, &omask);
if (nflag < 0) { /* kludge: print zombies */
nflag = 0;
zflag = 1;
}
if (cp) {
int ecode;
if ((j = j_lookup(cp, &ecode)) == (Job *) 0) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
bi_errorf("%s: %s", cp, lookup_msgs[ecode]);
return 1;
}
} else
j = job_list;
how = slp == 0 ? JP_MEDIUM : (slp == 1 ? JP_LONG : JP_PGRP);
for (; j; j = j->next) {
if ((!(j->flags & JF_ZOMBIE) || zflag) &&
(!nflag || (j->flags & JF_CHANGED)))
{
j_print(j, how, shl_stdout);
if (j->state == PEXITED || j->state == PSIGNALLED)
j->flags |= JF_REMOVE;
}
if (cp)
break;
}
/* Remove jobs after printing so there won't be multiple + or - jobs */
for (j = job_list; j; j = tmp) {
tmp = j->next;
if (j->flags & JF_REMOVE)
remove_job(j, "jobs");
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return 0;
}
/* kill (built-in) a job */
int
j_kill(const char *cp, int sig)
{
Job *j;
int rv = 0;
int ecode;
sigset_t omask;
sigprocmask(SIG_BLOCK, &sm_sigchld, &omask);
if ((j = j_lookup(cp, &ecode)) == (Job *) 0) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
bi_errorf("%s: %s", cp, lookup_msgs[ecode]);
return 1;
}
if (j->pgrp == 0) { /* started when !Flag(FMONITOR) */
if (kill_job(j, sig) < 0) {
bi_errorf("%s: %s", cp, strerror(errno));
rv = 1;
}
} else {
#ifdef JOBS
if (j->state == PSTOPPED && (sig == SIGTERM || sig == SIGHUP))
(void) killpg(j->pgrp, SIGCONT);
#endif /* JOBS */
if (killpg(j->pgrp, sig) < 0) {
bi_errorf("%s: %s", cp, strerror(errno));
rv = 1;
}
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return rv;
}
/* fg and bg built-ins: called only if Flag(FMONITOR) set */
int
j_resume(const char *cp, int bg)
{
Job *j;
Proc *p;
int ecode;
int running;
int rv = 0;
sigset_t omask;
sigprocmask(SIG_BLOCK, &sm_sigchld, &omask);
if ((j = j_lookup(cp, &ecode)) == (Job *) 0) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
bi_errorf("%s: %s", cp, lookup_msgs[ecode]);
return 1;
}
if (j->pgrp == 0) {
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
bi_errorf("job not job-controlled");
return 1;
}
if (bg)
shprintf("[%d] ", j->job);
running = 0;
for (p = j->proc_list; p != (Proc *) 0; p = p->next) {
if (p->state == PSTOPPED) {
p->state = PRUNNING;
p->status = 0;
running = 1;
}
shprintf("%s%s", p->command, p->next ? "| " : null);
}
shprintf("%s", newline);
shf_flush(shl_stdout);
if (running)
j->state = PRUNNING;
put_job(j, PJ_PAST_STOPPED);
if (bg)
j_set_async(j);
else {
# ifdef JOBS
/* attach tty to job */
if (j->state == PRUNNING) {
if (ttypgrp_ok && (j->flags & JF_SAVEDTTY))
tcsetattr(tty_fd, TCSADRAIN, &j->ttystate);
/* See comment in j_waitj regarding saved_ttypgrp. */
if (ttypgrp_ok &&
tcsetpgrp(tty_fd, (j->flags & JF_SAVEDTTYPGRP) ?
j->saved_ttypgrp : j->pgrp) < 0) {
if (j->flags & JF_SAVEDTTY)
tcsetattr(tty_fd, TCSADRAIN, &tty_state);
sigprocmask(SIG_SETMASK, &omask,
(sigset_t *) 0);
bi_errorf("1st tcsetpgrp(%d, %d) failed: %s",
tty_fd,
(int) ((j->flags & JF_SAVEDTTYPGRP) ?
j->saved_ttypgrp : j->pgrp),
strerror(errno));
return 1;
}
}
# endif /* JOBS */
j->flags |= JF_FG;
j->flags &= ~JF_KNOWN;
if (j == async_job)
async_job = (Job *) 0;
}
if (j->state == PRUNNING && killpg(j->pgrp, SIGCONT) < 0) {
int err = errno;
if (!bg) {
j->flags &= ~JF_FG;
# ifdef JOBS
if (ttypgrp_ok && (j->flags & JF_SAVEDTTY))
tcsetattr(tty_fd, TCSADRAIN, &tty_state);
if (ttypgrp_ok && tcsetpgrp(tty_fd, our_pgrp) < 0) {
warningf(true,
"fg: 2nd tcsetpgrp(%d, %d) failed: %s",
tty_fd, (int) our_pgrp,
strerror(errno));
}
# endif /* JOBS */
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
bi_errorf("cannot continue job %s: %s",
cp, strerror(err));
return 1;
}
if (!bg) {
# ifdef JOBS
if (ttypgrp_ok) {
j->flags &= ~(JF_SAVEDTTY | JF_SAVEDTTYPGRP);
}
# endif /* JOBS */
rv = j_waitj(j, JW_NONE, "jw:resume");
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return rv;
}
