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-rw-r--r--apt-pkg/deb/dpkgpm.cc42
1 files changed, 28 insertions, 14 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 706abcb92..ce4d4b44b 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -357,7 +357,15 @@ void pkgDPkgPM::DoTerminalPty(int master)
char term_buf[1024] = {0,};
int len=read(master, term_buf, sizeof(term_buf));
- if(len <= 0)
+ if(len == -1 && errno == EIO)
+ {
+ // this happens when the child is about to exit, we
+ // give it time to actually exit, otherwise we run
+ // into a race
+ usleep(500000);
+ return;
+ }
+ if(len <= 0)
return;
write(1, term_buf, len);
if(term_out)
@@ -816,7 +824,12 @@ bool pkgDPkgPM::Go(int OutStatusFd)
// setups fds
fd_set rfds;
- struct timeval tv;
+ struct timespec tv;
+ sigset_t sigmask;
+ sigset_t original_sigmask;
+ sigemptyset(&sigmask);
+ sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
+
int select_ret;
while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
if(res < 0) {
@@ -839,18 +852,19 @@ bool pkgDPkgPM::Go(int OutStatusFd)
if(master >= 0)
FD_SET(master, &rfds);
tv.tv_sec = 1;
- tv.tv_usec = 0;
- select_ret = select(max(master, _dpkgin)+1, &rfds, NULL, NULL, &tv);
- if (select_ret == 0)
- continue;
- else if (select_ret < 0 && errno == EINTR)
- continue;
- else if (select_ret < 0)
- {
- perror("select() returned error");
- continue;
- }
-
+ tv.tv_nsec = 0;
+ select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL,
+ &tv, &original_sigmask);
+ if (select_ret == 0)
+ continue;
+ else if (select_ret < 0 && errno == EINTR)
+ continue;
+ else if (select_ret < 0)
+ {
+ perror("select() returned error");
+ continue;
+ }
+
if(master >= 0 && FD_ISSET(master, &rfds))
DoTerminalPty(master);
if(master >= 0 && FD_ISSET(0, &rfds))