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pgrep: Look at all ancestors in --ignore-ancestors

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Previously we mistakenly only checked one previous level of the
hierarchy.

Signed-off-by: Chris Down <chris@chrisdown.name>
This commit is contained in:
Chris Down 2022-08-31 09:59:47 +01:00
parent 8eee6cc48c
commit 2ba7e39f2b
1 changed files with 8 additions and 8 deletions
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14
src/pgrep.c
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@ -199,7 +199,6 @@ static int __attribute__ ((__noreturn__)) usage(int opt)
static struct el *get_our_ancestors(void)
{
#define PIDS_GETINT(e) PIDS_VAL(EU_##e, s_int, stack, info)
struct pids_info *info = NULL;
struct el *list = NULL;
int i = 0;
int size = 0;
@ -207,27 +206,28 @@ static struct el *get_our_ancestors(void)
pid_t search_pid = getpid();
struct pids_stack *stack;
while (!done) {
struct pids_info *info = NULL;
if (procps_pids_new(&info, Items, 15) < 0)
xerrx(EXIT_FATAL, _("Unable to create pid info structure"));
while (!done) {
if (search_pid == 0)
break;
if (i == size) {
grow_size(size);
list = xrealloc(list, (1 + size) * sizeof(*list));
}
done = 1;
while ((stack = procps_pids_get(info, PIDS_FETCH_TASKS_ONLY))) {
if (PIDS_GETINT(PID) == search_pid) {
list[++i].num = PIDS_GETINT(PPID);
search_pid = list[i].num;
done = 0;
break;
}
done = 1;
}
procps_pids_unref(&info);
}
if (i == 0) {