diff options
Diffstat (limited to 'lib/libarchive/filter_fork.c')
| -rw-r--r-- | lib/libarchive/filter_fork.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/lib/libarchive/filter_fork.c b/lib/libarchive/filter_fork.c deleted file mode 100644 index d2a1e88..0000000 --- a/lib/libarchive/filter_fork.c +++ /dev/null @@ -1,161 +0,0 @@ -/*- - * Copyright (c) 2007 Joerg Sonnenberger - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "archive_platform.h" - -/* This capability is only available on POSIX systems. */ -#if defined(HAVE_PIPE) && defined(HAVE_FCNTL) && \ - (defined(HAVE_FORK) || defined(HAVE_VFORK)) - -__FBSDID("$FreeBSD$"); - -#if defined(HAVE_POLL) && (defined(HAVE_POLL_H) || defined(HAVE_SYS_POLL_H)) -# if defined(HAVE_POLL_H) -# include <poll.h> -# elif defined(HAVE_SYS_POLL_H) -# include <sys/poll.h> -# endif -#elif defined(HAVE_SELECT) -# if defined(HAVE_SYS_SELECT_H) -# include <sys/select.h> -# elif defined(HAVE_UNISTD_H) -# include <unistd.h> -# endif -#endif -#ifdef HAVE_FCNTL_H -# include <fcntl.h> -#endif -#ifdef HAVE_UNISTD_H -# include <unistd.h> -#endif - -#include "filter_fork.h" - -pid_t -__archive_create_child(const char *path, int *child_stdin, int *child_stdout) -{ - pid_t child; - int stdin_pipe[2], stdout_pipe[2], tmp; - - if (pipe(stdin_pipe) == -1) - goto state_allocated; - if (stdin_pipe[0] == 1 /* stdout */) { - if ((tmp = dup(stdin_pipe[0])) == -1) - goto stdin_opened; - close(stdin_pipe[0]); - stdin_pipe[0] = tmp; - } - if (pipe(stdout_pipe) == -1) - goto stdin_opened; - if (stdout_pipe[1] == 0 /* stdin */) { - if ((tmp = dup(stdout_pipe[1])) == -1) - goto stdout_opened; - close(stdout_pipe[1]); - stdout_pipe[1] = tmp; - } - -#if HAVE_VFORK - switch ((child = vfork())) { -#else - switch ((child = fork())) { -#endif - case -1: - goto stdout_opened; - case 0: - close(stdin_pipe[1]); - close(stdout_pipe[0]); - if (dup2(stdin_pipe[0], 0 /* stdin */) == -1) - _exit(254); - if (stdin_pipe[0] != 0 /* stdin */) - close(stdin_pipe[0]); - if (dup2(stdout_pipe[1], 1 /* stdout */) == -1) - _exit(254); - if (stdout_pipe[1] != 1 /* stdout */) - close(stdout_pipe[1]); - execlp(path, path, (char *)NULL); - _exit(254); - default: - close(stdin_pipe[0]); - close(stdout_pipe[1]); - - *child_stdin = stdin_pipe[1]; - fcntl(*child_stdin, F_SETFL, O_NONBLOCK); - *child_stdout = stdout_pipe[0]; - fcntl(*child_stdout, F_SETFL, O_NONBLOCK); - } - - return child; - -stdout_opened: - close(stdout_pipe[0]); - close(stdout_pipe[1]); -stdin_opened: - close(stdin_pipe[0]); - close(stdin_pipe[1]); -state_allocated: - return -1; -} - -void -__archive_check_child(int in, int out) -{ -#if defined(HAVE_POLL) && (defined(HAVE_POLL_H) || defined(HAVE_SYS_POLL_H)) - struct pollfd fds[2]; - int idx; - - idx = 0; - if (in != -1) { - fds[idx].fd = in; - fds[idx].events = POLLOUT; - ++idx; - } - if (out != -1) { - fds[idx].fd = out; - fds[idx].events = POLLIN; - ++idx; - } - - poll(fds, idx, -1); /* -1 == INFTIM, wait forever */ -#elif defined(HAVE_SELECT) - fd_set fds_in, fds_out, fds_error; - - FD_ZERO(&fds_in); - FD_ZERO(&fds_out); - FD_ZERO(&fds_error); - if (out != -1) { - FD_SET(out, &fds_in); - FD_SET(out, &fds_error); - } - if (in != -1) { - FD_SET(in, &fds_out); - FD_SET(in, &fds_error); - } - select(in < out ? out + 1 : in + 1, &fds_in, &fds_out, &fds_error, NULL); -#else - sleep(1); -#endif -} - -#endif /* defined(HAVE_PIPE) && defined(HAVE_VFORK) && defined(HAVE_FCNTL) */ |
