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transfused: replace brittle event pid writing with write_exactly

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Signed-off-by: David Sheets <dsheets@docker.com>
This commit is contained in:
David Sheets 2016-12-14 14:40:33 +00:00
parent 78328cf026
commit 6cf50dd803
1 changed files with 2 additions and 11 deletions
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13
alpine/packages/transfused/transfused.c
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@ -744,23 +744,14 @@ void write_pid(connection_t *connection)
{
pid_t pid = gettid();
char *pid_s;
int pid_s_len, write_count;
int pid_s_len;
if (asprintf(&pid_s, "%lld", (long long)pid) == -1)
die(1, connection->params, "Couldn't allocate pid string", "");
pid_s_len = strlen(pid_s);
/* TODO: check for socket write conditions e.g.EAGAIN */
write_count = write(connection->sock, pid_s, pid_s_len);
if (write_count < 0)
die(1, connection->params, "Error writing pid", "");
/* TODO: handle short writes */
if (write_count != pid_s_len)
die(1, connection->params, NULL,
"Error writing pid %s to socket: only wrote %d bytes",
pid_s, write_count);
write_exactly("pid", connection->sock, pid_s, pid_s_len);
free(pid_s);
}