RE: execv obsolet ?

Thu, 12 Oct 2023 12:10:44 -0700 

 1 hour ago, not 1 year agoπŸ™‚
________________________________
De: MIGUEL ALEXANDRE WISINTAINER <[email protected]>
Enviado: quinta-feira, 12 de outubro de 2023 19:07
Para: [email protected] <[email protected]>
Assunto: RE: execv obsolet ?

yes, i already had done that 1 year ago

ubuntu@DESKTOP-GRCNLV8:~$ nano hello_main.c
ubuntu@DESKTOP-GRCNLV8:~$ gcc hello_main.c -o hello_main
ubuntu@DESKTOP-GRCNLV8:~$ ./hello_main
Executing 1 /bin/ls
Espruino                      esp                  kitware-archive.sh.1      
nuttx    mbed    rust   esp-adf
RIOT                          esp-va-sdk           kitware-archive.sh.2      
tinygo  thread-os freertos
a.out                         esp32_binary_merger  lora-modem-abz-1.2.5      
tinygo_0.26.0_amd64.deb
blink                         go                   lora-modem-abz-1.2.5.zip  
zephyr-sdk-0.15.0   embedded-os-beta-esp32c
cmake-3.21.1-Linux-x86_64.sh  hello_main           loramac-node              
zephyr-sdk-0.15.0_linux-x86_64.tar.gz
drogue-device                 hello_main.c         minicom.log               
zephyr-sdk-0.15.1_linux-x86_64.tar.gz
embassy                       kitware-archive.sh   mynewt

On linux works

On nuttx not...i tried  the path to...but...the problem is where is the path of 
ls

"/ls"

if (argc < 2)
{
        static char * const args[2] =
        {
                "/bin/ls",
                NULL
        };
        printf("Executing 1 %s \n", args[0]);
        execv(args[0], args);
}

________________________________
De: Alan C. Assis <[email protected]>
Enviado: quinta-feira, 12 de outubro de 2023 18:48
Para: [email protected] <[email protected]>
Assunto: Re: execv obsolet ?

Hi Miguel,

I suggest you to try first in the Linux.

NuttX should give you the same result ;-)

BR,

Alan

On 10/12/23, MIGUEL ALEXANDRE WISINTAINER <[email protected]> wrote:
> Now compiles πŸ™‚
>
> in theory should show the files got from ls on terminal ?
>
> Builtin Apps:
>     i2c      sh       hello    nsh
> nsh> hello
> nsh>
>
> =============
>
> #include <nuttx/config.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
>
>
> #ifdef CONFIG_BUILD_KERNEL
> int main(int argc, FAR char *argv[])
> #else
> int hello_main(int argc, char *argv[])
> #endif
> {
>
> if (argc < 2)
> {
>       static char * const args[2] =
>       {
>             "ls",
>             NULL
>       };
>
>       execv(args[0], args);
> }
> De: Xiang Xiao <[email protected]>
> Enviado: quinta-feira, 12 de outubro de 2023 18:08
> Para: [email protected] <[email protected]>
> Assunto: Re: execv obsolet ?
>
> you need enable CONFIG_LIBC_EXECFUNCS:
> https://github.com/apache/nuttx/blob/master/libs/libc/unistd/lib_execv.c#L29
>
> On Fri, Oct 13, 2023 at 1:59β€―AM MIGUEL ALEXANDRE WISINTAINER <
> [email protected]> wrote:
>
>> #include <nuttx/config.h>
>> #include <stdio.h>
>> #include <stdlib.h>
>> #include <unistd.h>
>>
>> #ifdef CONFIG_BUILD_KERNEL
>> int main(int argc, FAR char *argv[])
>> #else
>> int hello_main(int argc, char *argv[])
>> #endif
>> {
>>
>> if (argc < 2)
>> {
>> static char * const args[2] =
>> {
>> "/bin/ls",
>> NULL
>> };
>>
>> execv(args[0], args);
>> }
>>
>> else
>> {
>> int i;
>>
>> for (i = 1; i < argc; i++)
>> {
>> static char * const args[3] =
>> {
>> "/bin/ls",
>> NULL,
>> NULL
>> };
>> args[1] = argv[i];
>> execv(args[0], args);
>> }
>> }
>> return EXIT_SUCCESS;
>> }
>>
>> hello_main.c:(.text.hello_main+0xe): undefined reference to `execv'
>> xtensa-esp32-elf-ld: hello_main.c:(.text.hello_main+0x20): undefined
>> reference to `execv'
>> make[1]: *** [Makefile:173: nuttx] Error 1
>> make: *** [tools/Unix.mk:537: nuttx] Error 2
>>
>

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