Add -s (output PID's only) and -l (show PID's) options to the jobs(1)
builtin. Modify the output format to match what SUSv3 requires.
This commit is contained in:
Tim J. Robbins
parent
dc1024256c
commit
ad8a075902
@ -109,7 +109,7 @@ STATIC void setcurjob(struct job *);
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STATIC void deljob(struct job *);
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STATIC struct job *getcurjob(struct job *);
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#endif
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STATIC void showjob(struct job *);
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STATIC void showjob(struct job *, int, int);
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/*
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@ -271,31 +271,85 @@ restartjob(struct job *jp)
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int
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jobscmd(int argc __unused, char **argv __unused)
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jobscmd(int argc, char *argv[])
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{
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showjobs(0);
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return 0;
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struct job *jp;
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char *id;
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int ch, sformat, lformat;
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optind = optreset = 1;
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sformat = lformat = 0;
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while ((ch = getopt(argc, argv, "ls")) != -1) {
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switch (ch) {
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case 'l':
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lformat = 1;
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break;
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case 's':
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sformat = 1;
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break;
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case '?':
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default:
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error("unknown option: -%c", optopt);
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}
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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showjobs(0, sformat, lformat);
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else
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while ((id = *argv++) != NULL)
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showjob(getjob(id), sformat, lformat);
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return (0);
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}
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STATIC void
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showjob(struct job *jp)
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showjob(struct job *jp, int sformat, int lformat)
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{
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char s[64];
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struct procstat *ps;
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int col, i, jobno, procno;
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struct job *j;
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int col, curr, i, jobno, prev, procno;
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char c;
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procno = jp->nprocs;
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jobno = jp - jobtab + 1;
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curr = prev = 0;
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#if JOBS
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if ((j = getcurjob(NULL)) != NULL) {
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curr = j - jobtab + 1;
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if ((j = getcurjob(j)) != NULL)
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prev = j - jobtab + 1;
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}
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#endif
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for (ps = jp->ps ; ; ps++) { /* for each process */
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if (ps == jp->ps)
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fmtstr(s, 64, "[%d] %d ", jobno, ps->pid);
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if (sformat) {
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out1fmt("%d\n", ps->pid);
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goto skip;
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}
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if (!lformat && ps != jp->ps)
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goto skip;
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if (jobno == curr)
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c = '+';
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else if (jobno == prev)
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c = '-';
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else
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fmtstr(s, 64, " %d ", ps->pid);
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c = ' ';
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if (ps == jp->ps)
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fmtstr(s, 64, "[%d] %c ", jobno, c);
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else
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fmtstr(s, 64, " %c ", c);
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out1str(s);
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col = strlen(s);
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if (lformat) {
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fmtstr(s, 64, "%d ", ps->pid);
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out1str(s);
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col += strlen(s);
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}
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s[0] = '\0';
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if (ps->status == -1) {
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/* don't print anything */
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strcpy(s, "Running");
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} else if (WIFEXITED(ps->status)) {
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fmtstr(s, 64, "Exit %d", WEXITSTATUS(ps->status));
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} else {
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@ -320,7 +374,7 @@ showjob(struct job *jp)
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} while (col < 30);
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out1str(ps->cmd);
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out1c('\n');
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if (--procno <= 0)
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skip: if (--procno <= 0)
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break;
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}
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}
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@ -335,7 +389,7 @@ showjob(struct job *jp)
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*/
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void
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showjobs(int change)
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showjobs(int change, int sformat, int lformat)
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{
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int jobno;
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struct job *jp;
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@ -351,7 +405,7 @@ showjobs(int change)
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}
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if (change && ! jp->changed)
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continue;
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showjob(jp);
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showjob(jp, sformat, lformat);
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jp->changed = 0;
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if (jp->state == JOBDONE) {
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freejob(jp);
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@ -909,7 +963,7 @@ dowait(int block, struct job *job)
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sig = WTERMSIG(status);
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}
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if (sig != 0 && sig != SIGINT && sig != SIGPIPE)
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showjob(thisjob);
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showjob(thisjob, 0, 0);
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} else {
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TRACE(("Not printing status, rootshell=%d, job=0x%x\n", rootshell, job));
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if (thisjob)
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@ -87,7 +87,7 @@ void setjobctl(int);
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int fgcmd(int, char **);
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int bgcmd(int, char **);
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int jobscmd(int, char **);
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void showjobs(int);
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void showjobs(int, int, int);
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int waitcmd(int, char **);
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int jobidcmd(int, char **);
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struct job *makejob(union node *, int);
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@ -229,7 +229,7 @@ cmdloop(int top)
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inter = 0;
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if (iflag && top) {
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inter++;
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showjobs(1);
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showjobs(1, 0, 0);
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chkmail(0);
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flushout(&output);
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}
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19
bin/sh/sh.1
19
bin/sh/sh.1
@ -1570,9 +1570,22 @@ Print the process id's of the processes in the specified
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If the
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.Ar job
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argument is omitted, use the current job.
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.It Ic jobs
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This command lists out all the background processes
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which are children of the current shell process.
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.It Xo
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.Ic jobs
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.Op Fl ls
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.Op Ar job ...
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.Xc
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Print information about the specified jobs, or all jobs if no
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.Ar job
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argument is given.
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The information printed includes job ID, status and command name.
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.Pp
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If the
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.Fl l
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option is specified, the PID of each job is also printed.
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If the
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.Fl s
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option is specified, only the PID's of the jobs are printed, one per line.
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.It Ic pwd Op Fl LP
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Print the path of the current directory. The builtin command may
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differ from the program of the same name because the
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