u-boot/cmd/exit.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2000-2009
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 */

#include <common.h>
#include <command.h>

static int do_exit(struct cmd_tbl *cmdtp, int flag, int argc,
		   char *const argv[])
{
	if (argc > 1)
		return simple_strtoul(argv[1], NULL, 10);

	return 0;
}

U_BOOT_CMD(
	exit,	2,	1,	do_exit,
	"exit script",
	""
);
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-06 17:58:06 -04:00			`// SPDX-License-Identifier: GPL-2.0+`
command.c: Break commands out to appropriate cmd_*.c files command.c should contain common code related to commands, not miscellaneous command implementations. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> 2009-10-16 17:36:25 -05:00			`/*`
			`* Copyright 2000-2009`
			`* Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
			`*/`

			`#include <common.h>`
			`#include <command.h>`

command: Remove the cmd_tbl_t typedef We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org> 2020-05-10 11:40:03 -06:00			`static int do_exit(struct cmd_tbl *cmdtp, int flag, int argc,`
			`char *const argv[])`
command.c: Break commands out to appropriate cmd_*.c files command.c should contain common code related to commands, not miscellaneous command implementations. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> 2009-10-16 17:36:25 -05:00			`{`
			`if (argc > 1)`
cmd: exit: Fix return value In case exit is called in a script without parameter, the command returns -2 ; in case exit is called with a numerical parameter, the command returns -2 and lower. This leads to the following problem: => setenv foo 'echo bar ; exit 1' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit 0' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit -2' ; run foo ; echo $? bar 0 That is, no matter what the 'exit' command argument is, the return value is always 0 and so it is not possible to use script return value in subsequent tests. Fix this and simplify the exit command such that if exit is called with no argument, the command returns 0, just like 'true' in cmd/test.c. In case the command is called with any argument that is positive integer, the argument is set as return value. => setenv foo 'echo bar ; exit 1' ; run foo ; echo $? bar 1 => setenv foo 'echo bar ; exit 0' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit -2' ; run foo ; echo $? bar 0 Note that this does change ABI established in 2004 , although it is unclear whether that ABI was originally OK or not. Fixes: c26e454dfc6 Signed-off-by: Marek Vasut <marex@denx.de> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: Tom Rini <trini@konsulko.com> 2021-04-06 14:00:24 +02:00			`return simple_strtoul(argv[1], NULL, 10);`
command.c: Break commands out to appropriate cmd_*.c files command.c should contain common code related to commands, not miscellaneous command implementations. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> 2009-10-16 17:36:25 -05:00
cmd: exit: Fix return value In case exit is called in a script without parameter, the command returns -2 ; in case exit is called with a numerical parameter, the command returns -2 and lower. This leads to the following problem: => setenv foo 'echo bar ; exit 1' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit 0' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit -2' ; run foo ; echo $? bar 0 That is, no matter what the 'exit' command argument is, the return value is always 0 and so it is not possible to use script return value in subsequent tests. Fix this and simplify the exit command such that if exit is called with no argument, the command returns 0, just like 'true' in cmd/test.c. In case the command is called with any argument that is positive integer, the argument is set as return value. => setenv foo 'echo bar ; exit 1' ; run foo ; echo $? bar 1 => setenv foo 'echo bar ; exit 0' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit -2' ; run foo ; echo $? bar 0 Note that this does change ABI established in 2004 , although it is unclear whether that ABI was originally OK or not. Fixes: c26e454dfc6 Signed-off-by: Marek Vasut <marex@denx.de> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: Tom Rini <trini@konsulko.com> 2021-04-06 14:00:24 +02:00			`return 0;`
command.c: Break commands out to appropriate cmd_*.c files command.c should contain common code related to commands, not miscellaneous command implementations. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> 2009-10-16 17:36:25 -05:00			`}`

			`U_BOOT_CMD(`
			`exit, 2, 1, do_exit,`
			`"exit script",`
			`""`
			`);`