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// SPDX-License-Identifier: GPL-2.0-only
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <common.h>
#include <fcntl.h>
#include <fs.h>
#include <dirent.h>
#include <libfile.h>
#include <sys/stat.h>
#include <unistd.h>
#include <bselftest.h>
#include <linux/sizes.h>
BSELFTEST_GLOBALS();
#define __expect(_ret, _cond, fmt, ...) ({ \
bool cond = (_cond); \
int ret = (_ret); \
total_tests++; \
\
if (!cond) { \
failed_tests++; \
printf("%s:%d error %pe: " fmt "\n", \
__func__, __LINE__, ERR_PTR(ret), ##__VA_ARGS__); \
} \
cond; \
})
#define expect_success(ret, ...) __expect((ret), (ret) >= 0, __VA_ARGS__)
#define expect_fail(ret, ...) __expect((ret), (ret) < 0, __VA_ARGS__)
static inline int get_file_count(int i)
{
if (40 <= i && i < 50)
return 40;
if (i >= 50)
i -= 10;
/* we create a file for i == 0 as well */
return i + 1;
}
static void test_ramfs(void)
{
char fname[128];
char *content = NULL;
char *oldpwd = NULL;
DIR *dir = NULL;
const char *dname;
struct stat st;
int i, j, ret, fd;
struct dirent *d;
dname = make_temp("ramfs-test");
ret = mkdir(dname, 0777);
if (!expect_success(ret, "creating directory"))
return;
ret = stat(dname, &st);
if (!expect_success(ret, "stating directory"))
goto out;
expect_success(S_ISDIR(st.st_mode) ? 0 : -ENOTDIR,
"directory check");
content = malloc(99);
if (WARN_ON(!content))
goto out;
for (i = 0; i < 99; i++) {
scnprintf(fname, sizeof(fname), "%s/file-%02d", dname, i);
fd = open(fname, O_RDWR | O_CREAT);
if (!expect_success(fd, "creating file"))
continue;
for (j = 0; j < i; j++)
content[j] = i;
ret = write(fd, content, i);
expect_success(ret, "writing file");
close(fd);
if (40 <= i && i < 50) {
ret = unlink(fname);
expect_success(ret, "unlinking file");
}
ret = stat(fname, &st);
if (40 <= i && i < 50) {
expect_fail(ret, "stating file");
} else {
expect_success(ret, "stating file");
expect_success(S_ISREG(st.st_mode) ? 0 : -EINVAL,
"stating file");
}
dir = opendir(dname);
if (!expect_success(PTR_ERR_OR_ZERO(dir), "opening parent directory"))
continue;
j = 0;
while ((d = readdir(dir))) {
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
j++;
}
expect_success(j == get_file_count(i) ? 0 : -EINVAL,
"unexpected file count iterating directory");
closedir(dir);
}
oldpwd = pushd(dname);
if (!expect_success(oldpwd != NULL ? 0 : -EINVAL, "pushd()"))
goto out;;
dir = opendir(".");
if (!expect_success(PTR_ERR_OR_ZERO(dir), "opening parent directory"))
goto out;
i = 1;
while ((d = readdir(dir))) {
size_t size = 0;
char *buf;
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
buf = read_file(d->d_name, &size);
if (size) {
for (j = 0; j < size; j++) {
expect_success(buf[j] == size ? 0 : -EINVAL,
"unexpected file content");
}
}
scnprintf(fname, sizeof(fname), "file-%02zu", size);
expect_success(strcmp(d->d_name, fname) == 0 ? 0 : -EINVAL,
"unexpected file content");
free(buf);
i++;
}
expect_success(i == 90 ? 0 : -EINVAL,
"unexpected file count iterating directory: %u", i);
ret = make_directory("test/a/b/c/d/e/f/g/h/i/j/k/l");
expect_success(ret, "make_directory()");
if (!ret) {
const char hello[] = "hello";
char *buf;
ret = write_file("test/a/b/c/d/e/f/g/h/i/j/k/l/FILE",
ARRAY_AND_SIZE(hello));
expect_success(ret, "write_file()");
buf = read_file("test/a/b/c/d/e/f/g/h/i/j/k/l/FILE", NULL);
if (expect_success(PTR_ERR_OR_ZERO(buf), "read_file()")) {
expect_success(memcmp(buf, ARRAY_AND_SIZE(hello)),
"read_file() content");
}
}
out:
popd(oldpwd);
free(content);
closedir(dir);
ret = unlink_recursive(dname, NULL);
expect_success(ret, "unlinking directory");
dir = opendir(dname);
expect_fail(dir ? 0 : -EISDIR, "opening removed directory");
}
bselftest(core, test_ramfs);
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