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semi-working (only non-client/server wayland apps)

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Zandr Martin 2016-06-10 06:08:59 -05:00
parent 0f1859ed25
commit 03d79b41c7
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GPG key ID: AA2BB8EF77F7BBDC
3 changed files with 79 additions and 11 deletions
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39
common/util.c
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@ -1,6 +1,10 @@
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "readline.h"
#include "util.h"
#include "log.h"
int wrap(int i, int max) {
return ((i % max) + max) % max;
@ -64,3 +68,36 @@ int get_modifier_names(const char **names, uint32_t modifier_masks) {
return length;
}
pid_t get_parent_pid(pid_t child) {
pid_t parent;
char file_name[100];
char *buffer = NULL;
char *token = NULL;
const char sep[2] = " ";
FILE *stat = NULL;
sway_log(L_DEBUG, "trying to get parent pid for child pid %d", child);
sprintf(file_name, "/proc/%d/stat", child);
if (!(stat = fopen(file_name, "r")) || !(buffer = read_line(stat))) {
return -1;
}
fclose(stat);
sway_log(L_DEBUG, "buffer string is %s", buffer);
token = strtok(buffer, sep);
for (int i = 0; i < 3; i++) {
token = strtok(NULL, sep);
}
parent = strtol(token, NULL, 10);
sway_log(L_DEBUG, "found parent pid %d for child pid %d", parent, child);
return (parent == child) ? -1 : parent;
}