[LTP] [PATCH v4 1/6] API: Add safe openat, printfat, readat and unlinkat

[Petr Vorel <pvorel@suse.cz>]

Hi Richie,

> Add 'at' variants for a number of system calls and LTP SAFE API
> functions. This avoids using sprintf everywhere to build paths.

> diff --git a/lib/tst_safe_file_at.c b/lib/tst_safe_file_at.c
> new file mode 100644
> index 000000000..a92a48fb2
> --- /dev/null
> +++ b/lib/tst_safe_file_at.c
> @@ -0,0 +1,170 @@
> +#define _GNU_SOURCE
> +#include "lapi/fcntl.h"
> +#include "tst_safe_file_at.h"
This requires <stdio.h> (sprintf).

Also file should have SPDX license + copyright.

Reviewed-by: Petr Vorel <pvorel@suse.cz>

Kind regards,
Petr

> +#define TST_NO_DEFAULT_MAIN
> +#include "tst_test.h"
> +
> +char fd_path[PATH_MAX];
> +
> +char *tst_decode_fd(int fd)
> +{
> +	ssize_t ret;
> +	char proc_path[32];
> +
> +	if (fd < 0)
> +		return "!";
> +
> +	sprintf(proc_path, "/proc/self/fd/%d", fd);
> +	ret = readlink(proc_path, fd_path, sizeof(fd_path));
...