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ash: make "jobs -l" more similar to bash. By Earl Chew. Fixes bug 481

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-08-23 22:10:04 +02:00
parent bd73f1d85a
commit a12af2d9f3
1 changed files with 31 additions and 25 deletions
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52
shell/ash.c
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@ -3240,9 +3240,9 @@ unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#define FORK_NOJOB 2
/* mode flags for showjob(s) */
#define SHOW_PGID 0x01 /* only show pgid - for jobs -p */
#define SHOW_PID 0x04 /* include process pid */
#define SHOW_CHANGED 0x08 /* only jobs whose state has changed */
#define SHOW_ONLY_PGID 0x01 /* show only pgid (jobs -p) */
#define SHOW_PIDS 0x02 /* show individual pids, not just one line per job */
#define SHOW_CHANGED 0x04 /* only jobs whose state has changed */
/*
* A job structure contains information about a job. A job is either a
@ -3250,7 +3250,6 @@ unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
* latter case, pidlist will be non-NULL, and will point to a -1 terminated
* array of pids.
*/
struct procstat {
pid_t pid; /* process id */
int status; /* last process status from wait() */
@ -3935,7 +3934,7 @@ showjob(FILE *out, struct job *jp, int mode)
ps = jp->ps;
if (mode & SHOW_PGID) {
if (mode & SHOW_ONLY_PGID) { /* jobs -p */
/* just output process (group) id of pipeline */
fprintf(out, "%d\n", ps->pid);
return;
@ -3945,11 +3944,11 @@ showjob(FILE *out, struct job *jp, int mode)
indent_col = col;
if (jp == curjob)
s[col - 2] = '+';
s[col - 3] = '+';
else if (curjob && jp == curjob->prev_job)
s[col - 2] = '-';
s[col - 3] = '-';
if (mode & SHOW_PID)
if (mode & SHOW_PIDS)
col += fmtstr(s + col, 16, "%d ", ps->pid);
psend = ps + jp->nprocs;
@ -3963,25 +3962,32 @@ showjob(FILE *out, struct job *jp, int mode)
status = jp->stopstatus;
col += sprint_status(s + col, status, 0);
}
/* By now, "[JOBID]* [maybe PID] STATUS" is printed */
/* This loop either prints "<cmd1> | <cmd2> | <cmd3>" line
* or prints several "PID | <cmdN>" lines,
* depending on SHOW_PIDS bit.
* We do not print status of individual processes
* between PID and <cmdN>. bash does it, but not very well:
* first line shows overall job status, not process status,
* making it impossible to know 1st process status.
*/
goto start;
do {
while (1) {
/* for each process */
col = fmtstr(s, 48, " |\n%*c%d ", indent_col, ' ', ps->pid) - 3;
s[0] = '\0';
col = 33;
if (mode & SHOW_PIDS)
col = fmtstr(s, 48, "\n%*c%d ", indent_col, ' ', ps->pid) - 1;
start:
fprintf(out, "%s%*c%s",
s, 33 - col >= 0 ? 33 - col : 0, ' ', ps->cmd
);
if (!(mode & SHOW_PID)) {
showpipe(jp, out);
fprintf(out, "%s%*c", s, 33 - col >= 0 ? 33 - col : 0, ' ');
if (ps != jp->ps)
fprintf(out, "| ");
fprintf(out, "%s", ps->cmd);
if (++ps == psend)
break;
}
if (++ps == psend) {
outcslow('\n', out);
break;
}
} while (1);
jp->changed = 0;
@ -4021,15 +4027,15 @@ jobscmd(int argc UNUSED_PARAM, char **argv)
mode = 0;
while ((m = nextopt("lp"))) {
if (m == 'l')
mode = SHOW_PID;
mode |= SHOW_PIDS;
else
mode = SHOW_PGID;
mode |= SHOW_ONLY_PGID;
}
argv = argptr;
if (*argv) {
do
showjob(stdout, getjob(*argv,0), mode);
showjob(stdout, getjob(*argv, 0), mode);
while (*++argv);
} else
showjobs(stdout, mode);