cosmopolitan/test/libc/calls/open_test.c
2022-06-27 15:00:51 -07:00

141 lines
5.2 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/macros.internal.h"
#include "libc/runtime/gc.internal.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
char testlib_enable_tmp_setup_teardown;
__attribute__((__constructor__)) static void init(void) {
pledge("stdio rpath wpath cpath fattr", 0);
errno = 0;
}
TEST(open, efault) {
ASSERT_SYS(EFAULT, -1, open(0, O_RDONLY));
if (IsWindows() && !IsAsan()) return; // not possible
ASSERT_SYS(EFAULT, -1, open((void *)77, O_RDONLY));
}
TEST(open, enoent) {
ASSERT_SYS(ENOENT, -1, open("", O_RDONLY));
ASSERT_SYS(ENOENT, -1, open("doesnotexist", O_RDONLY));
ASSERT_SYS(ENOENT, -1, open("o/doesnotexist", O_RDONLY));
}
TEST(open, enotdir) {
ASSERT_SYS(0, 0, touch("o", 0644));
ASSERT_SYS(ENOTDIR, -1, open("o/doesnotexist", O_RDONLY));
}
TEST(open, eexist) {
ASSERT_SYS(0, 0, touch("exists", 0644));
ASSERT_SYS(EEXIST, -1, open("exists", O_WRONLY | O_CREAT | O_EXCL));
}
TEST(open, doubleSlash_worksAndGetsNormalizedOnWindows) {
ASSERT_SYS(0, 0, mkdir("o", 0755));
ASSERT_SYS(0, 3,
open(gc(xjoinpaths(gc(getcwd(0, 0)), "o//deleteme")),
O_WRONLY | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 0, close(3));
}
TEST(open, enametoolong) {
size_t n = 260;
char *s = gc(xcalloc(1, n + 1));
memset(s, 'J', n);
ASSERT_SYS(ENAMETOOLONG, -1, creat(s, 0644));
}
TEST(open, testSpaceInFilename) {
char buf[8] = {0};
ASSERT_SYS(0, 0, xbarf("hello txt", "hello", -1));
ASSERT_SYS(0, 3, open("hello txt", O_WRONLY));
EXPECT_SYS(0, 1, write(3, "H", 1));
EXPECT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, open("hello txt", O_RDONLY));
EXPECT_SYS(0, 5, read(3, buf, 7));
EXPECT_STREQ("Hello", buf);
EXPECT_SYS(0, 0, close(3));
}
TEST(open, testOpenExistingForWriteOnly_seeksToStart) {
char buf[8] = {0};
ASSERT_SYS(0, 0, xbarf("hello.txt", "hello", -1));
ASSERT_SYS(0, 3, open("hello.txt", O_WRONLY));
EXPECT_SYS(0, 1, write(3, "H", 1));
EXPECT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, open("hello.txt", O_RDONLY));
EXPECT_SYS(0, 5, read(3, buf, 7));
EXPECT_STREQ("Hello", buf);
EXPECT_SYS(0, 0, close(3));
}
TEST(open, testOpenExistingForReadWrite_seeksToStart) {
char buf[8] = {0};
ASSERT_SYS(0, 0, xbarf("hello.txt", "hello", -1));
ASSERT_SYS(0, 3, open("hello.txt", O_RDWR));
EXPECT_SYS(0, 1, write(3, "H", 1));
EXPECT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, open("hello.txt", O_RDONLY));
EXPECT_SYS(0, 5, read(3, buf, 7));
EXPECT_STREQ("Hello", buf);
EXPECT_SYS(0, 0, close(3));
}
TEST(open, testOpenExistingForAppendWriteOnly_seeksToEnd) {
char buf[8] = {0};
ASSERT_SYS(0, 0, xbarf("hello.txt", "hell", -1));
ASSERT_SYS(0, 3, open("hello.txt", O_WRONLY | O_APPEND));
EXPECT_SYS(0, 1, write(3, "o", 1));
EXPECT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, open("hello.txt", O_RDONLY));
EXPECT_SYS(0, 5, read(3, buf, 7));
EXPECT_STREQ("hello", buf);
EXPECT_SYS(0, 0, close(3));
}
int CountFds(void) {
int i, count;
for (count = i = 0; i < g_fds.n; ++i) {
if (g_fds.p[i].kind) {
++count;
}
}
return count;
}
TEST(open, lotsOfFds) {
if (!IsWindows()) return;
int i, n = 200;
ASSERT_SYS(0, 0, xbarf("hello.txt", "hello", -1));
for (i = 3; i < n; ++i) {
EXPECT_EQ(i, CountFds());
EXPECT_SYS(0, i, open("hello.txt", O_RDONLY));
}
for (i = 3; i < n; ++i) {
EXPECT_SYS(0, 0, close(i));
}
}