[LTP] [PATCH v3 4/6] Add file_attr01 test

[Cyril Hrubis]

Hi!
> --- a/runtest/syscalls
> +++ b/runtest/syscalls
> @@ -246,6 +246,8 @@ fallocate06 fallocate06
>  fsetxattr01 fsetxattr01
>  fsetxattr02 fsetxattr02
>  
> +file_attr01 file_attr01
> +
>  #posix_fadvise test cases
>  posix_fadvise01                      posix_fadvise01
>  posix_fadvise01_64                posix_fadvise01_64
> diff --git a/testcases/kernel/syscalls/file_attr/.gitignore b/testcases/kernel/syscalls/file_attr/.gitignore
> new file mode 100644
> index 0000000000000000000000000000000000000000..de06f204d34be482a6401f2a5e7931caa5e3ab12
> --- /dev/null
> +++ b/testcases/kernel/syscalls/file_attr/.gitignore
> @@ -0,0 +1 @@
> +file_attr01
> diff --git a/testcases/kernel/syscalls/file_attr/Makefile b/testcases/kernel/syscalls/file_attr/Makefile
> new file mode 100644
> index 0000000000000000000000000000000000000000..3b19b0ce6be00839038c405eea027b0102761e45
> --- /dev/null
> +++ b/testcases/kernel/syscalls/file_attr/Makefile
> @@ -0,0 +1,8 @@
> +# Copyright (c) 2025 - Linaro Limited. All rights reserved.
> +# SPDX-License-Identifier: GPL-2.0-or-later
> +
> +top_srcdir		?= ../../../..
> +
> +include $(top_srcdir)/include/mk/testcases.mk
> +
> +include $(top_srcdir)/include/mk/generic_leaf_target.mk
> diff --git a/testcases/kernel/syscalls/file_attr/file_attr01.c b/testcases/kernel/syscalls/file_attr/file_attr01.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..597ce31fbb11c47754a264eba394be3c233c8663
> --- /dev/null
> +++ b/testcases/kernel/syscalls/file_attr/file_attr01.c
> @@ -0,0 +1,171 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (C) 2025 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
> + */
> +
> +/*\
> + * Verify that `file_getattr` and `file_setattr` syscalls are raising the
> + * correct errors according to the invalid input arguments. In particular:
> + *
> + * - EBADFD: Invalid file descriptor.
> + * - ENOENT: File doesn't exist
> + * - EFAULT: File name is NULL
> + * - EFAULT: File attributes is NULL
> + * - EINVAL: File attributes size is zero
> + * - E2BIG: File attributes size is too big
> + * - EINVAL: Invalid AT flags
> + */
> +
> +#include <string.h>
> +#include "tst_test.h"
> +#include "lapi/fs.h"
> +#include "lapi/fcntl.h"
> +
> +#define MNTPOINT "mntpoint"
> +#define FILENAME "ltp_file"
> +#define NO_FILENAME "ltp_file_doesnt_exist"
> +
> +static int valid_dfd = -1;
> +static int invalid_dfd = -1;
> +static char *valid_filename;
> +static char *invalid_filename;
> +static char *null_ptr;
> +static size_t zero;
> +static size_t valid_usize;
> +static size_t big_usize;
> +static struct file_attr *valid_file_attr;
> +
> +static struct tcase {
> +	int *dfd;
> +	char **filename;
> +	struct file_attr **ufattr;
> +	size_t *usize;
> +	int at_flags;
> +	int exp_errno;
> +	char *msg;
> +} tcases[] = {
> +	{
> +		.dfd = &invalid_dfd,

Hmm do we need a tst_fd iterator for this case?

> +		.filename = &valid_filename,
> +		.ufattr = &valid_file_attr,
> +		.usize = &valid_usize,
> +		.exp_errno = EBADF,
> +		.msg = "Invalid file descriptor",
> +	},
> +	{
> +		.dfd = &valid_dfd,
> +		.filename = &invalid_filename,
> +		.ufattr = &valid_file_attr,
> +		.usize = &valid_usize,
> +		.exp_errno = ENOENT,
> +		.msg = "File doesn't exist",
> +	},
> +	{
> +		.dfd = &valid_dfd,
> +		.filename = &null_ptr,
> +		.ufattr = &valid_file_attr,
> +		.usize = &valid_usize,
> +		.exp_errno = EFAULT,
> +		.msg = "Filename is NULL",
> +	},
> +	{
> +		.dfd = &valid_dfd,
> +		.filename = &valid_filename,
> +		.ufattr = (struct file_attr **)(&null_ptr),
> +		.usize = &valid_usize,
> +		.exp_errno = EFAULT,
> +		.msg = "File attributes is NULL",
> +	},
> +	{
> +		.dfd = &valid_dfd,
> +		.filename = &valid_filename,
> +		.ufattr = &valid_file_attr,
> +		.usize = &zero,
> +		.exp_errno = EINVAL,
> +		.msg = "File attributes size is zero",
> +	},
> +	{
> +		.dfd = &valid_dfd,
> +		.filename = &valid_filename,
> +		.ufattr = &valid_file_attr,
> +		.usize = &big_usize,
> +		.exp_errno = E2BIG,
> +		.msg = "File attributes size is too big",
> +	},
> +	{
> +		.dfd = &valid_dfd,
> +		.filename = &valid_filename,
> +		.ufattr = &valid_file_attr,
> +		.usize = &valid_usize,
> +		.at_flags = -1,
> +		.exp_errno = EINVAL,
> +		.msg = "Invalid AT flags",
> +	},
> +};
> +
> +static void run(unsigned int i)
> +{
> +	struct tcase *tc = &tcases[i];
> +
> +	if (tst_variant) {
> +		TST_EXP_FAIL(file_getattr(
> +			*tc->dfd, *tc->filename,
> +			*tc->ufattr, *tc->usize,
> +			tc->at_flags),
> +			tc->exp_errno,
> +			"%s", tc->msg);
> +	} else {
> +		TST_EXP_FAIL(file_setattr(
> +			*tc->dfd, *tc->filename,
> +			*tc->ufattr, *tc->usize,
> +			tc->at_flags),
> +			tc->exp_errno,
> +			"%s", tc->msg);
> +	}
> +}
> +
> +static void setup(void)
> +{
> +	valid_dfd = SAFE_OPEN(MNTPOINT, O_RDONLY);
> +
> +	SAFE_CHDIR(MNTPOINT);
> +	SAFE_TOUCH(FILENAME, 0777, NULL);
> +	SAFE_CHDIR("..");
> +
> +	memcpy(valid_filename, FILENAME, strlen(FILENAME));
> +	memcpy(invalid_filename, NO_FILENAME, strlen(NO_FILENAME));

The struct tst_buffers have .str member that if set copies the string,
so instead of .size = 32 you need to pass .str = FILENAME and .str
NO_FILENAME there.

> +	valid_usize = FILE_ATTR_SIZE_LATEST;
> +	big_usize = sysconf(_SC_PAGESIZE) + 100;

Do we need a small_usize that would be one less than smalles
FILE_ATTR_SIZE as well?

> +}
> +
> +static void cleanup(void)
> +{
> +	if (valid_dfd != -1)
> +		SAFE_CLOSE(valid_dfd);
> +}
> +
> +static struct tst_test test = {
> +	.test = run,
> +	.setup = setup,
> +	.cleanup = cleanup,
> +	.tcnt = ARRAY_SIZE(tcases),
> +	.mntpoint = MNTPOINT,
> +	.needs_root = 1,
> +	.mount_device = 1,
> +	.all_filesystems = 1,
> +	.test_variants = 2,
> +	.skip_filesystems = (const char *const []) {
> +		"fuse",
> +		"ntfs",
> +		"vfat",
> +		"exfat",
> +		NULL
> +	},
> +	.bufs = (struct tst_buffers []) {
> +		{&valid_filename, .size = 32},
> +		{&invalid_filename, .size = 32},
> +		{&valid_file_attr, .size = sizeof(struct file_attr)},
> +		{}
> +	}
> +};
> 
> -- 
> 2.50.1
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz