tools/testing/selftests/exec/non-regular.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/exec/non-regular.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/exec/non-regular.c
Extension
.c
Size
3644 bytes
Lines
197
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

ASSERT_EQ(errno, ENOENT) {
			TH_LOG("Not ENOENT: %s", pathname);
		}
	} else {
		ASSERT_EQ(rc, 0) {
			TH_LOG("Failed to remove: %s", pathname);
		}
	}
}

FIXTURE(file) {
	char *pathname;
	int is_dir;
};

FIXTURE_VARIANT(file)
{
	const char *name;
	int expected;
	int is_dir;
	void (*setup)(struct __test_metadata *_metadata,
		      FIXTURE_DATA(file) *self,
		      const FIXTURE_VARIANT(file) *variant);
	int major, minor, mode; /* for mknod() */
};

void setup_link(struct __test_metadata *_metadata,
		FIXTURE_DATA(file) *self,
		const FIXTURE_VARIANT(file) *variant)
{
	const char * const paths[] = {
		"/bin/true",
		"/usr/bin/true",
	};
	int i;

	for (i = 0; i < ARRAY_SIZE(paths); i++) {
		if (access(paths[i], X_OK) == 0) {
			ASSERT_EQ(symlink(paths[i], self->pathname), 0);
			return;
		}
	}
	ASSERT_EQ(1, 0) {
		TH_LOG("Could not find viable 'true' binary");
	}
}

FIXTURE_VARIANT_ADD(file, S_IFLNK)
{
	.name = "S_IFLNK",
	.expected = ELOOP,
	.setup = setup_link,
};

void setup_dir(struct __test_metadata *_metadata,
	       FIXTURE_DATA(file) *self,
	       const FIXTURE_VARIANT(file) *variant)
{
	ASSERT_EQ(mkdir(self->pathname, 0755), 0);
}

FIXTURE_VARIANT_ADD(file, S_IFDIR)
{
	.name = "S_IFDIR",
	.is_dir = 1,
	.expected = EACCES,
	.setup = setup_dir,
};

void setup_node(struct __test_metadata *_metadata,
		FIXTURE_DATA(file) *self,
		const FIXTURE_VARIANT(file) *variant)
{
	dev_t dev;
	int rc;

	dev = makedev(variant->major, variant->minor);
	rc = mknod(self->pathname, 0755 | variant->mode, dev);
	ASSERT_EQ(rc, 0) {
		if (errno == EPERM)
			SKIP(return, "Please run as root; cannot mknod(%s)",
				variant->name);
	}
}

FIXTURE_VARIANT_ADD(file, S_IFBLK)
{
	.name = "S_IFBLK",
	.expected = EACCES,
	.setup = setup_node,

Annotation

Implementation Notes