cosmopolitan/test/libc/calls/readlinkat_test.c
Justine Tunney ebf784d4f5
Make improvements
- Introduce ualarm() function
- Make rename() report EISEMPTY on Windows
- Always raise EINVAL upon open(O_RDONLY|O_TRUNC)
- Add macro so ./configure will detect SOCK_CLOEXEC
- Fix O_TRUNC without O_CREAT not working on Windows
- Let fcntl(F_SETFL) change O_APPEND status on Windows
- Make sure pwrite() / pread() report ESPIPE on sockets
- Raise ESPIPE on Windows when pwrite() is used on pipe
- Properly compute O_APPEND CreateFile() flags on Windows
- Don't require O_DIRECTORY to open directories on Windows
- Fix more instances of Windows reporting EISDIR and ENOTDIR
- Normalize EFTYPE and EMLINK to ELOOP on NetBSD and FreeBSD
- Make unlink() / rmdir() work on read-only files on Windows
- Validate UTF-8 on Windows paths to fix bug with overlong NUL
- Always print signal name to stderr when crashing due to SIG_DFL
- Fix Windows bug where denormalized paths >260 chars didn't work
- Block signals on BSDs when thread exits before trashing its own stack
2023-08-21 02:34:17 -07:00

112 lines
4.4 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 2021 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/calls.h"
#include "libc/calls/struct/stat.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/log/log.h"
#include "libc/mem/gc.h"
#include "libc/mem/gc.internal.h"
#include "libc/runtime/symbols.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/at.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/s.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
char testlib_enable_tmp_setup_teardown;
void SetUpOnce(void) {
ASSERT_SYS(0, 0, pledge("stdio rpath wpath cpath fattr", 0));
}
TEST(readlink, enoent) {
char buf[32];
ASSERT_SYS(ENOENT, -1, readlink("doesnotexist", buf, 32));
ASSERT_SYS(ENOENT, -1, readlink("o/doesnotexist", buf, 32));
}
TEST(readlink, enotdir) {
char buf[32];
ASSERT_SYS(0, 0, touch("o", 0644));
ASSERT_SYS(ENOTDIR, -1, readlink("o/doesnotexist", buf, 32));
}
TEST(readlinkat, test) {
char buf[128], *p, *q;
memset(buf, -1, sizeof(buf));
ASSERT_NE(-1, xbarf("hello→", "hi", -1));
ASSERT_STREQ("hi", gc(xslurp("hello→", 0)));
ASSERT_NE(-1, symlink("hello→", "there→"));
ASSERT_TRUE(isregularfile("hello→"));
ASSERT_TRUE(issymlink("there→"));
ASSERT_FALSE(isregularfile("there→"));
ASSERT_SYS(0, 8, readlink("there→", buf, sizeof(buf)));
EXPECT_EQ(255, buf[8] & 255);
buf[8] = 0;
EXPECT_STREQ("hello→", buf);
}
TEST(readlinkat, efault) {
char buf[128];
ASSERT_SYS(EFAULT, -1, readlink(0, buf, sizeof(buf)));
}
TEST(readlinkat, notexist) {
char buf[128];
ASSERT_SYS(ENOENT, -1, readlink("hi", buf, sizeof(buf)));
}
TEST(readlinkat, notalink) {
char buf[128];
ASSERT_SYS(0, 0, close(creat("hi", 0644)));
ASSERT_SYS(EINVAL, -1, readlink("hi", buf, sizeof(buf)));
}
TEST(readlinkat, frootloop) {
int fd;
char buf[128];
ASSERT_SYS(0, 0, symlink("froot", "froot"));
ASSERT_SYS(ELOOP, -1, readlink("froot/loop", buf, sizeof(buf)));
if (O_NOFOLLOW) {
ASSERT_SYS(ELOOP, -1, open("froot", O_RDONLY | O_NOFOLLOW));
if (0 && O_PATH) { /* need rhel5 test */
ASSERT_NE(-1, (fd = open("froot", O_RDONLY | O_NOFOLLOW | O_PATH)));
ASSERT_NE(-1, close(fd));
}
}
}
TEST(readlinkat, statReadsNameLength) {
struct stat st;
ASSERT_SYS(0, 0, symlink("froot", "froot"));
ASSERT_SYS(0, 0, fstatat(AT_FDCWD, "froot", &st, AT_SYMLINK_NOFOLLOW));
EXPECT_TRUE(S_ISLNK(st.st_mode));
EXPECT_EQ(5, st.st_size);
}
TEST(readlinkat, realpathReturnsLongPath) {
struct stat st;
char buf[PATH_MAX];
if (!IsWindows()) return;
if (!startswith(getcwd(buf, PATH_MAX), "/c/")) return;
ASSERT_SYS(0, 0, touch("froot", 0644));
ASSERT_STARTSWITH("/c/", realpath("froot", buf));
}