diff options
Diffstat (limited to 'test/self/ramfs.c')
| -rw-r--r-- | test/self/ramfs.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/test/self/ramfs.c b/test/self/ramfs.c new file mode 100644 index 0000000000..1bc2b3b068 --- /dev/null +++ b/test/self/ramfs.c @@ -0,0 +1,213 @@ +// 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; \ +}) + +static inline int ptr_to_err(const void *ptr) +{ + if (ptr) + return PTR_ERR_OR_ZERO(ptr); + + return -errno ?: -EFAULT; +} + +#define expect_success(ret, ...) __expect((ret), (ret) >= 0, __VA_ARGS__) +#define expect_ptrok(ptr, ...) expect_success(ptr_to_err(ptr), __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) +{ + int files[] = { 1, 3, 5, 7, 11, 13, 17 }; + 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_ptrok(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_ptrok(oldpwd, "pushd()")) + goto out;; + + dir = opendir("."); + if (!expect_ptrok(dir, "opening parent directory")) + goto out; + + i = 1; + j = 0; + + 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); + + /* + * For select files, we test unreaddir once and check if + * we read back same element on repeated readdir + */ + for (j = 0; j < ARRAY_SIZE(files); j++) { + if (size == files[j]) { + ret = unreaddir(dir, d); + expect_success(ret, "unreaddir"); + files[j] = -1; + break; + } + } + if (j == ARRAY_SIZE(files)) + 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_ptrok(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); |