From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 18.mo3.mail-out.ovh.net ([87.98.172.162] helo=mo3.mail-out.ovh.net) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1RHupx-0008CA-CC for barebox@lists.infradead.org; Sun, 23 Oct 2011 09:59:26 +0000 Received: from mail627.ha.ovh.net (b9.ovh.net [213.186.33.59]) by mo3.mail-out.ovh.net (Postfix) with SMTP id 1BA12FFCCE6 for ; Sun, 23 Oct 2011 12:02:02 +0200 (CEST) From: Jean-Christophe PLAGNIOL-VILLARD Date: Sun, 23 Oct 2011 17:59:21 +0800 Message-Id: <1319363961-4944-1-git-send-email-plagnioj@jcrosoft.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/1] sanbox: add linux_execve and linux_exec command To: barebox@lists.infradead.org this will allow to execute a program of the host from barebox Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- arch/sandbox/mach-sandbox/include/mach/linux.h | 2 + arch/sandbox/os/common.c | 22 +++++++++ commands/Kconfig | 4 ++ commands/Makefile | 1 + commands/linux_exec.c | 58 ++++++++++++++++++++++++ 5 files changed, 87 insertions(+), 0 deletions(-) create mode 100644 commands/linux_exec.c diff --git a/arch/sandbox/mach-sandbox/include/mach/linux.h b/arch/sandbox/mach-sandbox/include/mach/linux.h index 7c2386d..5917fe9 100644 --- a/arch/sandbox/mach-sandbox/include/mach/linux.h +++ b/arch/sandbox/mach-sandbox/include/mach/linux.h @@ -10,6 +10,8 @@ ssize_t linux_write(int fd, const void *buf, size_t count); off_t linux_lseek(int fildes, off_t offset); int linux_tstc(int fd); +int linux_execve(const char * filename, char *const argv[], char *const envp[]); + int barebox_register_console(char *name_template, int stdinfd, int stdoutfd); struct linux_console_data { diff --git a/arch/sandbox/os/common.c b/arch/sandbox/os/common.c index 5074a06..0833959 100644 --- a/arch/sandbox/os/common.c +++ b/arch/sandbox/os/common.c @@ -45,6 +45,7 @@ #include #include #include +#include /* * ...except the ones needed to connect with barebox */ @@ -193,6 +194,27 @@ off_t linux_lseek(int fd, off_t offset) return lseek(fd, offset, SEEK_SET); } +int linux_execve(const char * filename, char *const argv[], char *const envp[]) +{ + pid_t pid, tpid; + int execve_status; + + pid = fork(); + + if (pid == -1) { + perror("linux_execve"); + return pid; + } else if (pid == 0) { + exit(execve(filename, argv, envp)); + } else { + do { + tpid = wait(&execve_status); + } while(tpid != pid); + + return execve_status; + } +} + extern void start_barebox(void); extern void mem_malloc_init(void *start, void *end); diff --git a/commands/Kconfig b/commands/Kconfig index 11386f9..1eae25a 100644 --- a/commands/Kconfig +++ b/commands/Kconfig @@ -124,6 +124,10 @@ config CMD_TIME checking for ctrl-c, so the time command can be used with commands which are interruptible with ctrl-c. +config CMD_LINUX_EXEC + bool "linux exec" + depends on LINUX + endmenu menu "file commands " diff --git a/commands/Makefile b/commands/Makefile index d50ca68..f50ace6 100644 --- a/commands/Makefile +++ b/commands/Makefile @@ -59,3 +59,4 @@ obj-$(CONFIG_CMD_USB) += usb.o obj-$(CONFIG_CMD_TIME) += time.o obj-$(CONFIG_CMD_BOOT_CONFIG) += boot_config.o obj-$(CONFIG_CMD_BOOT_MENU) += boot_menu.o +obj-$(CONFIG_CMD_LINUX_EXEC) += linux_exec.o diff --git a/commands/linux_exec.c b/commands/linux_exec.c new file mode 100644 index 0000000..e147629 --- /dev/null +++ b/commands/linux_exec.c @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2011 Jean-Christophe PLAGNIOL-VILLARD + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include + +static int do_linux_exec(struct command *cmdtp, int argc, char *argv[]) +{ + int ret; + char **newargv; + char *newenv[] = { NULL }; + int i, j; + + if (argc < 2) + return 1; + + newargv = xzalloc(sizeof(char*) * argc); + + for (j = 0, i = 1; i < argc; i++, j++) + newargv[j] = argv[i]; + + newargv[j] = NULL; + ret = linux_execve(argv[1], newargv, newenv); + + if (ret) + return 1; + + return 0; +} + +BAREBOX_CMD_HELP_START(linux_exec) +BAREBOX_CMD_HELP_USAGE("linux_exec ...\n") +BAREBOX_CMD_HELP_SHORT("Execute a command on the host\n") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(linux_exec) + .cmd = do_linux_exec, + .usage = "Execute a command on the host", + BAREBOX_CMD_HELP(cmd_linux_exec_help) +BAREBOX_CMD_END -- 1.7.7 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox