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Only set user's tty to blocking mode when doing the final flush.

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Flush pipes as well as pty master when the process is done.
This commit is contained in:
Todd C. Miller
2010-05-04 09:09:12 -04:00
parent dc72c27b1b
commit e3f561668f
1 changed files with 34 additions and 24 deletions
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48
src/script.c
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@@ -704,12 +704,10 @@ script_execve(struct command_details *details, char *argv[], char *envp[],
if (log_io) {
/* Flush any remaining output (the plugin already got it) */
for (iob = iobufs; iob; iob = iob->next) {
n = fcntl(iob->wfd, F_GETFL, 0);
n = fcntl(script_fds[SFD_USERTTY], F_GETFL, 0);
if (n != -1 && ISSET(n, O_NONBLOCK)) {
CLR(n, O_NONBLOCK);
(void) fcntl(iob->wfd, F_SETFL, n);
}
(void) fcntl(script_fds[SFD_USERTTY], F_SETFL, n);
}
flush_output(iobufs);
@@ -1008,11 +1006,13 @@ bad:
static void
flush_output(struct io_buffer *iobufs)
{
struct io_buffer *iob, output;
struct io_buffer *iob;
int n;
/* XXX - really only want to flush output buffers, does it matter? */
/* Drain output buffers. */
for (iob = iobufs; iob; iob = iob->next) {
if (iob->rfd == script_fds[SFD_USERTTY])
continue;
while (iob->len > iob->off) {
n = write(iob->wfd, iob->buf + iob->off, iob->len - iob->off);
if (n <= 0)
@@ -1021,23 +1021,33 @@ flush_output(struct io_buffer *iobufs)
}
}
/* Make sure there is no output remaining on the master pty. */
/* XXX - pipes too? */
/* Make sure there is no output remaining on the master pty or in pipes. */
for (iob = iobufs; iob; iob = iob->next) {
if (iob->rfd == script_fds[SFD_USERTTY])
continue;
for (;;) {
n = read(script_fds[SFD_MASTER], output.buf, sizeof(output.buf));
if (n <= 0)
n = read(iob->rfd, iob->buf + iob->len,
sizeof(iob->buf) - iob->len);
if (n <= 0) {
if (n == -1 && errno == EINTR)
continue;
break;
/* XXX */
log_output(output.buf, n);
output.off = 0;
output.len = n;
}
if (!iob->action(iob->buf + iob->len, n))
break;
iob->len += n;
do {
n = write(script_fds[SFD_USERTTY], output.buf + output.off,
output.len - output.off);
if (n <= 0)
n = write(iob->wfd, iob->buf + iob->off, iob->len - iob->off);
if (n <= 0) {
if (n == -1 && errno == EINTR)
continue;
break;
output.off += n;
} while (output.len > output.off);
}
iob->off += n;
} while (iob->len > iob->off);
}
}
}