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init io_pipe[][] to -1, not 0

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This commit is contained in:
Todd C. Miller
2017-04-20 15:09:07 -06:00
parent f3daaba1c4
commit 6e75179528
1 changed files with 7 additions and 8 deletions
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15
src/exec_pty.c
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@@ -643,7 +643,7 @@ static int
fork_pty(struct command_details *details, int sv[], sigset_t *omask)
{
struct command_status cstat;
int io_pipe[3][2];
int io_pipe[3][2] = { { -1, -1 }, { -1, -1 }, { -1, -1 } };
sigaction_t sa;
sigset_t mask;
pid_t child;
@@ -697,7 +697,6 @@ fork_pty(struct command_details *details, int sv[], sigset_t *omask)
* If either stdin, stdout or stderr is not a tty we use a pipe
* to interpose ourselves instead of duping the pty fd.
*/
memset(io_pipe, 0, sizeof(io_pipe));
if (io_fds[SFD_STDIN] == -1 || !isatty(STDIN_FILENO)) {
sudo_debug_printf(SUDO_DEBUG_INFO, "stdin not a tty, creating a pipe");
pipeline = true;
@@ -763,11 +762,11 @@ fork_pty(struct command_details *details, int sv[], sigset_t *omask)
(void)fcntl(sv[1], F_SETFD, FD_CLOEXEC);
sigprocmask(SIG_SETMASK, omask, NULL);
/* Close the other end of the stdin/stdout/stderr pipes and exec. */
if (io_pipe[STDIN_FILENO][1])
if (io_pipe[STDIN_FILENO][1] != -1)
close(io_pipe[STDIN_FILENO][1]);
if (io_pipe[STDOUT_FILENO][0])
if (io_pipe[STDOUT_FILENO][0] != -1)
close(io_pipe[STDOUT_FILENO][0]);
if (io_pipe[STDERR_FILENO][0])
if (io_pipe[STDERR_FILENO][0] != -1)
close(io_pipe[STDERR_FILENO][0]);
/*
* If stdin/stdout is not a tty, start command in the background
@@ -786,11 +785,11 @@ fork_pty(struct command_details *details, int sv[], sigset_t *omask)
}
/* Close the other end of the stdin/stdout/stderr pipes. */
if (io_pipe[STDIN_FILENO][0])
if (io_pipe[STDIN_FILENO][0] != -1)
close(io_pipe[STDIN_FILENO][0]);
if (io_pipe[STDOUT_FILENO][1])
if (io_pipe[STDOUT_FILENO][1] != -1)
close(io_pipe[STDOUT_FILENO][1]);
if (io_pipe[STDERR_FILENO][1])
if (io_pipe[STDERR_FILENO][1] != -1)
close(io_pipe[STDERR_FILENO][1]);
debug_return_int(child);