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Check for dup2() failure.

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This commit is contained in:
Todd C. Miller
2010-06-15 09:02:23 -04:00
parent 59718c32e4
commit c2f8d24f20
5 changed files with 40 additions and 28 deletions
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7
src/exec_pty.c
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@@ -1096,9 +1096,10 @@ exec_pty(struct command_details *details, char *argv[], char *envp[])
setpgid(0, self);
/* Wire up standard fds, note that stdout/stderr may be pipes. */
dup2(io_fds[SFD_STDIN], STDIN_FILENO);
dup2(io_fds[SFD_STDOUT], STDOUT_FILENO);
dup2(io_fds[SFD_STDERR], STDERR_FILENO);
if (dup2(io_fds[SFD_STDIN], STDIN_FILENO) == -1 ||
dup2(io_fds[SFD_STDOUT], STDOUT_FILENO) == -1 ||
dup2(io_fds[SFD_STDERR], STDERR_FILENO) == -1)
error(1, "dup2");
/* Wait for parent to grant us the tty if we are foreground. */
if (foreground) {