QubesOS/qubes-core-admin-linux
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

qrexec: periodically check if remote domain/process still exists

Browse Source
This commit is contained in:
Marek Marczykowski-Górecki 2015-02-22 18:25:14 +01:00
parent 9ea5790a9b
commit e76007fe20
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
qrexec/qrexec-client.c
View File

@ -410,6 +410,7 @@ static void select_loop(libvchan_t *vchan)
int vchan_fd;
sigset_t selectmask;
struct timespec zero_timeout = { 0, 0 };
struct timespec select_timeout = { 10, 0 };
sigemptyset(&selectmask);
sigaddset(&selectmask, SIGCHLD);
@ -434,7 +435,7 @@ static void select_loop(libvchan_t *vchan)
&zero_timeout, &selectmask);
} else
ret = pselect(max_fd + 1, &select_set, NULL, NULL,
NULL, &selectmask);
&select_timeout, &selectmask);
if (ret < 0) {
if (errno == EINTR && local_pid > 0) {
continue;
@ -443,6 +444,12 @@ static void select_loop(libvchan_t *vchan)
do_exit(1);
}
}
if (ret == 0) {
if (!libvchan_is_open(vchan)) {
/* remote disconnected witout a proper signaling */
do_exit(1);
}
}
if (FD_ISSET(vchan_fd, &select_set))
libvchan_wait(vchan);
while (libvchan_data_ready(vchan))