// add interface to shm file
void bandwidth_shm_set(pid_t pid, const char *dev, int down, int up) {
// create bandwidth directory & file in case they are not in the filesystem yet
shm_create_firejail_dir();
shm_create_bandwidth_file(pid);
// create the new text entry
char *txt;
if (asprintf(&txt, "%s: RX %dKB/s, TX %dKB/s", dev, down, up) == -1)
errExit("asprintf");
// read bandwidth file
shm_read_bandwidth_file(pid);
// look for an existing entry and replace the text
IFBW *ptr = ifbw_find(dev);
if (ptr) {
assert(ptr->txt);
free(ptr->txt);
ptr->txt = txt;
}
// ... or add a new entry
else {
IFBW *ifbw_new = malloc(sizeof(IFBW));
if (!ifbw_new)
errExit("malloc");
memset(ifbw_new, 0, sizeof(IFBW));
ifbw_new->txt = txt;
// add it to the linked list
ifbw_add(ifbw_new);
}
shm_write_bandwidth_file(pid) ;
}
// remove interface from run file
void bandwidth_remove(pid_t pid, const char *dev) {
bandwidth_create_run_file(pid);
// read bandwidth file
read_bandwidth_file(pid);
// find the element and remove it
IFBW *elem = ifbw_find(dev);
if (elem) {
ifbw_remove(elem);
write_bandwidth_file(pid) ;
}
// remove the file if there are no entries in the list
if (ifbw == NULL) {
bandwidth_del_run_file(pid);
}
}
// remove interface from shm file
void bandwidth_shm_remove(pid_t pid, const char *dev) {
// create bandwidth directory & file in case they are not in the filesystem yet
shm_create_firejail_dir();
shm_create_bandwidth_file(pid);
// read bandwidth file
shm_read_bandwidth_file(pid);
// find the element and remove it
IFBW *elem = ifbw_find(dev);
if (elem) {
ifbw_remove(elem);
shm_write_bandwidth_file(pid) ;
}
// remove the file if there are no entries in the list
if (ifbw == NULL) {
bandwidth_shm_del_file(pid);
}
}
