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qrexec: fix handling remote domain death

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Periodically (every 10s) check if connection is still alive, otherwise
killing remote domain (as it's the case of DispVM) will hang client
side.
This commit is contained in:
Marek Marczykowski-Górecki 2018-05-24 04:12:26 +02:00
parent 4a8b10ea8b
commit 5f81f0486d
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GPG Key ID: 063938BA42CFA724
1 changed files with 2 additions and 1 deletions
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qrexec/qrexec-agent-data.c
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@ -295,6 +295,7 @@ int process_child_io(libvchan_t *data_vchan,
int remote_process_status = -1;
int ret, max_fd;
struct timespec zero_timeout = { 0, 0 };
struct timespec normal_timeout = { 10, 0 };
struct buffer stdin_buf;
sigemptyset(&selectmask);
@ -386,7 +387,7 @@ int process_child_io(libvchan_t *data_vchan,
/* check for other FDs, but exit immediately */
ret = pselect(max_fd + 1, &rdset, &wrset, NULL, &zero_timeout, &selectmask);
} else
ret = pselect(max_fd + 1, &rdset, &wrset, NULL, NULL, &selectmask);
ret = pselect(max_fd + 1, &rdset, &wrset, NULL, &normal_timeout, &selectmask);
if (ret < 0) {
if (errno == EINTR)
continue;