[PATCH] stdio: Do not ignore posix_spawn error on popen (BZ #29016)

[Andreas Schwab]

On Dez 06 2022, Adhemerval Zanella wrote:

> To correctly return error in case of default shell is not present.

Ok.

> diff --git a/libio/iopopen.c b/libio/iopopen.c
> index 06778cf110..e4be6c9779 100644
> --- a/libio/iopopen.c
> +++ b/libio/iopopen.c
> @@ -66,11 +66,12 @@ unlock (void *not_used)
>     be close (by transversing the proc_file_chain list) and the insertion of a
>     new one after a successful posix_spawn this function should be called
>     with proc_file_chain_lock acquired.  */
> -static bool
> +static int
>  spawn_process (posix_spawn_file_actions_t *fa, FILE *fp, const char *command,
>  	       int do_cloexec, int pipe_fds[2], int parent_end, int child_end,
>  	       int child_pipe_fd)
>  {
> +  int err = 0;

I don't think this needs to be initialized here.

> diff --git a/stdio-common/tst-popen3.c b/stdio-common/tst-popen3.c
> new file mode 100644
> index 0000000000..add5e97c09
> --- /dev/null
> +++ b/stdio-common/tst-popen3.c
> @@ -0,0 +1,38 @@
> +/* Check if popen return a correct error code if the default shell does not

s/return/returns/

> +   exists (BZ#29016).

s/exists/exist/

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."