From cf9286d2d84f7aef237ec0d363c692ef5035aa85 Mon Sep 17 00:00:00 2001 From: Lexxy Fox Date: Tue, 26 Sep 2023 13:30:14 -0500 Subject: Relocate pipes.c and pipes.h file to shared directory. With the addition of logger process redirect in supervise-daemon, pipes.c and pipes.h are now included in both s-s-d and supervise-daemon. Thus it makes sense to move the source files to the src/shared dir. --- src/shared/pipes.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 src/shared/pipes.c (limited to 'src/shared/pipes.c') diff --git a/src/shared/pipes.c b/src/shared/pipes.c new file mode 100644 index 00000000..5251a4f0 --- /dev/null +++ b/src/shared/pipes.c @@ -0,0 +1,56 @@ +/* + * pipes.c + * Helper to handle spawning processes and connecting them to pipes. + */ + +/* + * Copyright (c) 2018 The OpenRC Authors. + * See the Authors file at the top-level directory of this distribution and + * https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS + * + * This file is part of OpenRC. It is subject to the license terms in + * the LICENSE file found in the top-level directory of this + * distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE + * This file may not be copied, modified, propagated, or distributed + * except according to the terms contained in the LICENSE file. + */ + +#include +#include +#include + +#include "pipes.h" + +static const int pipe_read_end = 0; +static const int pipe_write_end = 1; + +/* + * Starts a command with stdin redirected from a pipe + * Returns the write end of the pipe or -1 + */ +int rc_pipe_command(char *cmd) +{ + int pfd[2]; + pid_t pid; + + if (pipe(pfd) < 0) + return -1; + + pid = fork(); + if (pid > 0) { + /* parent */ + close(pfd[pipe_read_end]); + return pfd[pipe_write_end]; + } else if (pid == 0) { + /* child */ + close(pfd[pipe_write_end]); + if (pfd[pipe_read_end] != STDIN_FILENO) { + if (dup2(pfd[pipe_read_end], STDIN_FILENO) < 0) + exit(1); + close(pfd[pipe_read_end]); + } + execl("/bin/sh", "sh", "-c", cmd, NULL); + exit(1); + } + return -1; +} -- cgit v1.2.3