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nolibc updates for v6.4 

o     Add support for loongarch.
 
 o     Fix stack-protector issues.
 
 o     Support additional integral types and signal-related macros.
 
 o     Add support for stdin, stdout, and stderr.
 
 o     Add getuid() and geteuid().
 
 o     Allow S_I* macros to be overridden by program.
 
 o     Defer to linux/fcntl.h and linux/stat.h to avoid duplicate
 	definitions.
 
 o     Many improvements to the self tests.
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Merge tag 'nolibc.2023.04.04a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull nolibc updates from Paul McKenney:

 - Add support for loongarch

 - Fix stack-protector issues

 - Support additional integral types and signal-related macros

 - Add support for stdin, stdout, and stderr

 - Add getuid() and geteuid()

 - Allow S_I* macros to be overridden by program

 - Defer to linux/fcntl.h and linux/stat.h to avoid duplicate
   definitions

 - Many improvements to the selftests

* tag 'nolibc.2023.04.04a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (22 commits)
  tools/nolibc: x86_64: add stackprotector support
  tools/nolibc: i386: add stackprotector support
  tools/nolibc: tests: add test for -fstack-protector
  tools/nolibc: tests: fold in no-stack-protector cflags
  tools/nolibc: add support for stack protector
  tools/nolibc: tests: constify test_names
  tools/nolibc: add helpers for wait() signal exits
  tools/nolibc: add definitions for standard fds
  selftests/nolibc: Adjust indentation for Makefile
  selftests/nolibc: Add support for LoongArch
  tools/nolibc: Add support for LoongArch
  tools/nolibc: Add statx() and make stat() rely on statx() if necessary
  tools/nolibc: Include linux/fcntl.h and remove duplicate code
  tools/nolibc: check for S_I* macros before defining them
  selftests/nolibc: skip the chroot_root and link_dir tests when not privileged
  tools/nolibc: add getuid() and geteuid()
  tools/nolibc: add tests for the integer limits in stdint.h
  tools/nolibc: enlarge column width of tests
  tools/nolibc: add integer types and integer limit macros
  tools/nolibc: add stdint.h
  ...
This commit is contained in:
Linus Torvalds 2023-04-24 12:09:43 -07:00
parent 4a4075ada6 0d8c461adb
commit 5d77652fbf
15 changed files with 718 additions and 115 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/include/nolibc/.gitignore vendored Normal file
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@ -0,0 +1 @@
sysroot

4
tools/include/nolibc/Makefile
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@ -25,8 +25,8 @@ endif
nolibc_arch := $(patsubst arm64,aarch64,$(ARCH))
arch_file := arch-$(nolibc_arch).h
all_files := ctype.h errno.h nolibc.h signal.h std.h stdio.h stdlib.h string.h \
sys.h time.h types.h unistd.h
all_files := ctype.h errno.h nolibc.h signal.h stackprotector.h std.h stdint.h \
stdio.h stdlib.h string.h sys.h time.h types.h unistd.h
# install all headers needed to support a bare-metal compiler
all: headers

7
tools/include/nolibc/arch-i386.h
View File

@ -181,6 +181,8 @@ struct sys_stat_struct {
char **environ __attribute__((weak));
const unsigned long *_auxv __attribute__((weak));
#define __ARCH_SUPPORTS_STACK_PROTECTOR
/* startup code */
/*
* i386 System V ABI mandates:
@ -188,9 +190,12 @@ const unsigned long *_auxv __attribute__((weak));
* 2) The deepest stack frame should be set to zero
*
*/
void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void)
void __attribute__((weak,noreturn,optimize("omit-frame-pointer"),no_stack_protector)) _start(void)
{
__asm__ volatile (
#ifdef NOLIBC_STACKPROTECTOR
"call __stack_chk_init\n" // initialize stack protector
#endif
"pop %eax\n" // argc (first arg, %eax)
"mov %esp, %ebx\n" // argv[] (second arg, %ebx)
"lea 4(%ebx,%eax,4),%ecx\n" // then a NULL then envp (third arg, %ecx)

200
tools/include/nolibc/arch-loongarch.h Normal file
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@ -0,0 +1,200 @@
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* LoongArch specific definitions for NOLIBC
* Copyright (C) 2023 Loongson Technology Corporation Limited
*/
#ifndef _NOLIBC_ARCH_LOONGARCH_H
#define _NOLIBC_ARCH_LOONGARCH_H
/* Syscalls for LoongArch :
* - stack is 16-byte aligned
* - syscall number is passed in a7
* - arguments are in a0, a1, a2, a3, a4, a5
* - the system call is performed by calling "syscall 0"
* - syscall return comes in a0
* - the arguments are cast to long and assigned into the target
* registers which are then simply passed as registers to the asm code,
* so that we don't have to experience issues with register constraints.
*
* On LoongArch, select() is not implemented so we have to use pselect6().
*/
#define __ARCH_WANT_SYS_PSELECT6
#define my_syscall0(num) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0"); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "=r"(_arg1) \
: "r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
#define my_syscall1(num, arg1) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0") = (long)(arg1); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "+r"(_arg1) \
: "r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
#define my_syscall2(num, arg1, arg2) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0") = (long)(arg1); \
register long _arg2 __asm__ ("a1") = (long)(arg2); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "+r"(_arg1) \
: "r"(_arg2), \
"r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
#define my_syscall3(num, arg1, arg2, arg3) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0") = (long)(arg1); \
register long _arg2 __asm__ ("a1") = (long)(arg2); \
register long _arg3 __asm__ ("a2") = (long)(arg3); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "+r"(_arg1) \
: "r"(_arg2), "r"(_arg3), \
"r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
#define my_syscall4(num, arg1, arg2, arg3, arg4) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0") = (long)(arg1); \
register long _arg2 __asm__ ("a1") = (long)(arg2); \
register long _arg3 __asm__ ("a2") = (long)(arg3); \
register long _arg4 __asm__ ("a3") = (long)(arg4); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "+r"(_arg1) \
: "r"(_arg2), "r"(_arg3), "r"(_arg4), \
"r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0") = (long)(arg1); \
register long _arg2 __asm__ ("a1") = (long)(arg2); \
register long _arg3 __asm__ ("a2") = (long)(arg3); \
register long _arg4 __asm__ ("a3") = (long)(arg4); \
register long _arg5 __asm__ ("a4") = (long)(arg5); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "+r"(_arg1) \
: "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), \
"r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6) \
({ \
register long _num __asm__ ("a7") = (num); \
register long _arg1 __asm__ ("a0") = (long)(arg1); \
register long _arg2 __asm__ ("a1") = (long)(arg2); \
register long _arg3 __asm__ ("a2") = (long)(arg3); \
register long _arg4 __asm__ ("a3") = (long)(arg4); \
register long _arg5 __asm__ ("a4") = (long)(arg5); \
register long _arg6 __asm__ ("a5") = (long)(arg6); \
\
__asm__ volatile ( \
"syscall 0\n" \
: "+r"(_arg1) \
: "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), "r"(_arg6), \
"r"(_num) \
: "memory", "$t0", "$t1", "$t2", "$t3", \
"$t4", "$t5", "$t6", "$t7", "$t8" \
); \
_arg1; \
})
char **environ __attribute__((weak));
const unsigned long *_auxv __attribute__((weak));
#if __loongarch_grlen == 32
#define LONGLOG "2"
#define SZREG "4"
#define REG_L "ld.w"
#define LONG_S "st.w"
#define LONG_ADD "add.w"
#define LONG_ADDI "addi.w"
#define LONG_SLL "slli.w"
#define LONG_BSTRINS "bstrins.w"
#else // __loongarch_grlen == 64
#define LONGLOG "3"
#define SZREG "8"
#define REG_L "ld.d"
#define LONG_S "st.d"
#define LONG_ADD "add.d"
#define LONG_ADDI "addi.d"
#define LONG_SLL "slli.d"
#define LONG_BSTRINS "bstrins.d"
#endif
/* startup code */
void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void)
{
__asm__ volatile (
REG_L " $a0, $sp, 0\n" // argc (a0) was in the stack
LONG_ADDI " $a1, $sp, "SZREG"\n" // argv (a1) = sp + SZREG
LONG_SLL " $a2, $a0, "LONGLOG"\n" // envp (a2) = SZREG*argc ...
LONG_ADDI " $a2, $a2, "SZREG"\n" // + SZREG (skip null)
LONG_ADD " $a2, $a2, $a1\n" // + argv
"move $a3, $a2\n" // iterate a3 over envp to find auxv (after NULL)
"0:\n" // do {
REG_L " $a4, $a3, 0\n" // a4 = *a3;
LONG_ADDI " $a3, $a3, "SZREG"\n" // a3 += sizeof(void*);
"bne $a4, $zero, 0b\n" // } while (a4);
"la.pcrel $a4, _auxv\n" // a4 = &_auxv
LONG_S " $a3, $a4, 0\n" // store a3 into _auxv
"la.pcrel $a3, environ\n" // a3 = &environ
LONG_S " $a2, $a3, 0\n" // store envp(a2) into environ
LONG_BSTRINS " $sp, $zero, 3, 0\n" // sp must be 16-byte aligned
"bl main\n" // main() returns the status code, we'll exit with it.
"li.w $a7, 93\n" // NR_exit == 93
"syscall 0\n"
);
__builtin_unreachable();
}
#endif // _NOLIBC_ARCH_LOONGARCH_H

5
tools/include/nolibc/arch-x86_64.h
View File

@ -181,6 +181,8 @@ struct sys_stat_struct {
char **environ __attribute__((weak));
const unsigned long *_auxv __attribute__((weak));
#define __ARCH_SUPPORTS_STACK_PROTECTOR
/* startup code */
/*
* x86-64 System V ABI mandates:
@ -191,6 +193,9 @@ const unsigned long *_auxv __attribute__((weak));
void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void)
{
__asm__ volatile (
#ifdef NOLIBC_STACKPROTECTOR
"call __stack_chk_init\n" // initialize stack protector
#endif
"pop %rdi\n" // argc (first arg, %rdi)
"mov %rsp, %rsi\n" // argv[] (second arg, %rsi)
"lea 8(%rsi,%rdi,8),%rdx\n" // then a NULL then envp (third arg, %rdx)

2
tools/include/nolibc/arch.h
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@ -29,6 +29,8 @@
#include "arch-riscv.h"
#elif defined(__s390x__)
#include "arch-s390.h"
#elif defined(__loongarch__)
#include "arch-loongarch.h"
#endif
#endif /* _NOLIBC_ARCH_H */

1
tools/include/nolibc/nolibc.h
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@ -104,6 +104,7 @@
#include "string.h"
#include "time.h"
#include "unistd.h"
#include "stackprotector.h"
/* Used by programs to avoid std includes */
#define NOLIBC

53
tools/include/nolibc/stackprotector.h Normal file
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@ -0,0 +1,53 @@
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* Stack protector support for NOLIBC
* Copyright (C) 2023 Thomas Weißschuh <linux@weissschuh.net>
*/
#ifndef _NOLIBC_STACKPROTECTOR_H
#define _NOLIBC_STACKPROTECTOR_H
#include "arch.h"
#if defined(NOLIBC_STACKPROTECTOR)
#if !defined(__ARCH_SUPPORTS_STACK_PROTECTOR)
#error "nolibc does not support stack protectors on this arch"
#endif
#include "sys.h"
#include "stdlib.h"
/* The functions in this header are using raw syscall macros to avoid
* triggering stack protector errors themselves
*/
__attribute__((weak,noreturn,section(".text.nolibc_stack_chk")))
void __stack_chk_fail(void)
{
pid_t pid;
my_syscall3(__NR_write, STDERR_FILENO, "!!Stack smashing detected!!\n", 28);
pid = my_syscall0(__NR_getpid);
my_syscall2(__NR_kill, pid, SIGABRT);
for (;;);
}
__attribute__((weak,noreturn,section(".text.nolibc_stack_chk")))
void __stack_chk_fail_local(void)
{
__stack_chk_fail();
}
__attribute__((weak,section(".data.nolibc_stack_chk")))
uintptr_t __stack_chk_guard;
__attribute__((weak,no_stack_protector,section(".text.nolibc_stack_chk")))
void __stack_chk_init(void)
{
my_syscall3(__NR_getrandom, &__stack_chk_guard, sizeof(__stack_chk_guard), 0);
/* a bit more randomness in case getrandom() fails */
__stack_chk_guard ^= (uintptr_t) &__stack_chk_guard;
}
#endif // defined(NOLIBC_STACKPROTECTOR)
#endif // _NOLIBC_STACKPROTECTOR_H

15
tools/include/nolibc/std.h
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@ -18,20 +18,7 @@
#define NULL ((void *)0)
#endif
/* stdint types */
typedef unsigned char uint8_t;
typedef signed char int8_t;
typedef unsigned short uint16_t;
typedef signed short int16_t;
typedef unsigned int uint32_t;
typedef signed int int32_t;
typedef unsigned long long uint64_t;
typedef signed long long int64_t;
typedef unsigned long size_t;
typedef signed long ssize_t;
typedef unsigned long uintptr_t;
typedef signed long intptr_t;
typedef signed long ptrdiff_t;
#include "stdint.h"
/* those are commonly provided by sys/types.h */
typedef unsigned int dev_t;

99
tools/include/nolibc/stdint.h Normal file
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@ -0,0 +1,99 @@
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* Standard definitions and types for NOLIBC
* Copyright (C) 2023 Vincent Dagonneau <v@vda.io>
*/
#ifndef _NOLIBC_STDINT_H
#define _NOLIBC_STDINT_H
typedef unsigned char uint8_t;
typedef signed char int8_t;
typedef unsigned short uint16_t;
typedef signed short int16_t;
typedef unsigned int uint32_t;
typedef signed int int32_t;
typedef unsigned long long uint64_t;
typedef signed long long int64_t;
typedef unsigned long size_t;
typedef signed long ssize_t;
typedef unsigned long uintptr_t;
typedef signed long intptr_t;
typedef signed long ptrdiff_t;
typedef int8_t int_least8_t;
typedef uint8_t uint_least8_t;
typedef int16_t int_least16_t;
typedef uint16_t uint_least16_t;
typedef int32_t int_least32_t;
typedef uint32_t uint_least32_t;
typedef int64_t int_least64_t;
typedef uint64_t uint_least64_t;
typedef int8_t int_fast8_t;
typedef uint8_t uint_fast8_t;
typedef ssize_t int_fast16_t;
typedef size_t uint_fast16_t;
typedef ssize_t int_fast32_t;
typedef size_t uint_fast32_t;
typedef ssize_t int_fast64_t;
typedef size_t uint_fast64_t;
typedef int64_t intmax_t;
typedef uint64_t uintmax_t;
/* limits of integral types */
#define INT8_MIN (-128)
#define INT16_MIN (-32767-1)
#define INT32_MIN (-2147483647-1)
#define INT64_MIN (-9223372036854775807LL-1)
#define INT8_MAX (127)
#define INT16_MAX (32767)
#define INT32_MAX (2147483647)
#define INT64_MAX (9223372036854775807LL)
#define UINT8_MAX (255)
#define UINT16_MAX (65535)
#define UINT32_MAX (4294967295U)
#define UINT64_MAX (18446744073709551615ULL)
#define INT_LEAST8_MIN INT8_MIN
#define INT_LEAST16_MIN INT16_MIN
#define INT_LEAST32_MIN INT32_MIN
#define INT_LEAST64_MIN INT64_MIN
#define INT_LEAST8_MAX INT8_MAX
#define INT_LEAST16_MAX INT16_MAX
#define INT_LEAST32_MAX INT32_MAX
#define INT_LEAST64_MAX INT64_MAX
#define UINT_LEAST8_MAX UINT8_MAX
#define UINT_LEAST16_MAX UINT16_MAX
#define UINT_LEAST32_MAX UINT32_MAX
#define UINT_LEAST64_MAX UINT64_MAX
#define SIZE_MAX ((size_t)(__LONG_MAX__) * 2 + 1)
#define INTPTR_MIN (-__LONG_MAX__ - 1)
#define INTPTR_MAX __LONG_MAX__
#define PTRDIFF_MIN INTPTR_MIN
#define PTRDIFF_MAX INTPTR_MAX
#define UINTPTR_MAX SIZE_MAX
#define INT_FAST8_MIN INT8_MIN
#define INT_FAST16_MIN INTPTR_MIN
#define INT_FAST32_MIN INTPTR_MIN
#define INT_FAST64_MIN INTPTR_MIN
#define INT_FAST8_MAX INT8_MAX
#define INT_FAST16_MAX INTPTR_MAX
#define INT_FAST32_MAX INTPTR_MAX
#define INT_FAST64_MAX INTPTR_MAX
#define UINT_FAST8_MAX UINT8_MAX
#define UINT_FAST16_MAX SIZE_MAX
#define UINT_FAST32_MAX SIZE_MAX
#define UINT_FAST64_MAX SIZE_MAX
#endif /* _NOLIBC_STDINT_H */

100
tools/include/nolibc/sys.h
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@ -11,7 +11,6 @@
#include "std.h"
/* system includes */
#include <asm/fcntl.h> // for O_*
#include <asm/unistd.h>
#include <asm/signal.h> // for SIGCHLD
#include <asm/ioctls.h>
@ -20,6 +19,8 @@
#include <linux/loop.h>
#include <linux/time.h>
#include <linux/auxvec.h>
#include <linux/fcntl.h> // for O_* and AT_*
#include <linux/stat.h> // for statx()
#include "arch.h"
#include "errno.h"
@ -410,6 +411,27 @@ int getdents64(int fd, struct linux_dirent64 *dirp, int count)
}
/*
* uid_t geteuid(void);
*/
static __attribute__((unused))
uid_t sys_geteuid(void)
{
#ifdef __NR_geteuid32
return my_syscall0(__NR_geteuid32);
#else
return my_syscall0(__NR_geteuid);
#endif
}
static __attribute__((unused))
uid_t geteuid(void)
{
return sys_geteuid();
}
/*
* pid_t getpgid(pid_t pid);
*/
@ -544,6 +566,27 @@ int gettimeofday(struct timeval *tv, struct timezone *tz)
}
/*
* uid_t getuid(void);
*/
static __attribute__((unused))
uid_t sys_getuid(void)
{
#ifdef __NR_getuid32
return my_syscall0(__NR_getuid32);
#else
return my_syscall0(__NR_getuid);
#endif
}
static __attribute__((unused))
uid_t getuid(void)
{
return sys_getuid();
}
/*
* int ioctl(int fd, unsigned long req, void *value);
*/
@ -1048,12 +1091,66 @@ pid_t setsid(void)
return ret;
}
#if defined(__NR_statx)
/*
* int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf);
*/
static __attribute__((unused))
int sys_statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)
{
return my_syscall5(__NR_statx, fd, path, flags, mask, buf);
}
static __attribute__((unused))
int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)
{
int ret = sys_statx(fd, path, flags, mask, buf);
if (ret < 0) {
SET_ERRNO(-ret);
ret = -1;
}
return ret;
}
#endif
/*
* int stat(const char *path, struct stat *buf);
* Warning: the struct stat's layout is arch-dependent.
*/
#if defined(__NR_statx) && !defined(__NR_newfstatat) && !defined(__NR_stat)
/*
* Maybe we can just use statx() when available for all architectures?
*/
static __attribute__((unused))
int sys_stat(const char *path, struct stat *buf)
{
struct statx statx;
long ret;
ret = sys_statx(AT_FDCWD, path, AT_NO_AUTOMOUNT, STATX_BASIC_STATS, &statx);
buf->st_dev = ((statx.stx_dev_minor & 0xff)
| (statx.stx_dev_major << 8)
| ((statx.stx_dev_minor & ~0xff) << 12));
buf->st_ino = statx.stx_ino;
buf->st_mode = statx.stx_mode;
buf->st_nlink = statx.stx_nlink;
buf->st_uid = statx.stx_uid;
buf->st_gid = statx.stx_gid;
buf->st_rdev = ((statx.stx_rdev_minor & 0xff)
| (statx.stx_rdev_major << 8)
| ((statx.stx_rdev_minor & ~0xff) << 12));
buf->st_size = statx.stx_size;
buf->st_blksize = statx.stx_blksize;
buf->st_blocks = statx.stx_blocks;
buf->st_atime = statx.stx_atime.tv_sec;
buf->st_mtime = statx.stx_mtime.tv_sec;
buf->st_ctime = statx.stx_ctime.tv_sec;
return ret;
}
#else
static __attribute__((unused))
int sys_stat(const char *path, struct stat *buf)
{
@ -1083,6 +1180,7 @@ int sys_stat(const char *path, struct stat *buf)
buf->st_ctime = stat.st_ctime;
return ret;
}
#endif
static __attribute__((unused))
int stat(const char *path, struct stat *buf)

30
tools/include/nolibc/types.h
View File

@ -9,6 +9,7 @@
#include "std.h"
#include <linux/time.h>
#include <linux/stat.h>
/* Only the generic macros and types may be defined here. The arch-specific
@ -16,7 +17,11 @@
* the layout of sys_stat_struct must not be defined here.
*/
/* stat flags (WARNING, octal here) */
/* stat flags (WARNING, octal here). We need to check for an existing
* definition because linux/stat.h may omit to define those if it finds
* that any glibc header was already included.
*/
#if !defined(S_IFMT)
#define S_IFDIR 0040000
#define S_IFCHR 0020000
#define S_IFBLK 0060000
@ -34,6 +39,22 @@
#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
#define S_IRWXU 00700
#define S_IRUSR 00400
#define S_IWUSR 00200
#define S_IXUSR 00100
#define S_IRWXG 00070
#define S_IRGRP 00040
#define S_IWGRP 00020
#define S_IXGRP 00010
#define S_IRWXO 00007
#define S_IROTH 00004
#define S_IWOTH 00002
#define S_IXOTH 00001
#endif
/* dirent types */
#define DT_UNKNOWN 0x0
#define DT_FIFO 0x1
@ -60,11 +81,6 @@
#define MAXPATHLEN (PATH_MAX)
#endif
/* Special FD used by all the *at functions */
#ifndef AT_FDCWD
#define AT_FDCWD (-100)
#endif
/* whence values for lseek() */
#define SEEK_SET 0
#define SEEK_CUR 1
@ -81,6 +97,8 @@
/* Macros used on waitpid()'s return status */
#define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
#define WIFEXITED(status) (((status) & 0x7f) == 0)
#define WTERMSIG(status) ((status) & 0x7f)
#define WIFSIGNALED(status) ((status) - 1 < 0xff)
/* waitpid() flags */
#define WNOHANG 1

5
tools/include/nolibc/unistd.h
View File

@ -13,6 +13,11 @@
#include "sys.h"
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
static __attribute__((unused))
int msleep(unsigned int msecs)
{

90
tools/testing/selftests/nolibc/Makefile
View File

@ -1,6 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
# Makefile for nolibc tests
include ../../../scripts/Makefile.include
# We need this for the "cc-option" macro.
include ../../../build/Build.include
# we're in ".../tools/testing/selftests/nolibc"
ifeq ($(srctree),)
@ -13,52 +15,56 @@ ARCH = $(SUBARCH)
endif
# kernel image names by architecture
IMAGE_i386 = arch/x86/boot/bzImage
IMAGE_x86_64 = arch/x86/boot/bzImage
IMAGE_x86 = arch/x86/boot/bzImage
IMAGE_arm64 = arch/arm64/boot/Image
IMAGE_arm = arch/arm/boot/zImage
IMAGE_mips = vmlinuz
IMAGE_riscv = arch/riscv/boot/Image
IMAGE_s390 = arch/s390/boot/bzImage
IMAGE = $(IMAGE_$(ARCH))
IMAGE_NAME = $(notdir $(IMAGE))
IMAGE_i386 = arch/x86/boot/bzImage
IMAGE_x86_64 = arch/x86/boot/bzImage
IMAGE_x86 = arch/x86/boot/bzImage
IMAGE_arm64 = arch/arm64/boot/Image
IMAGE_arm = arch/arm/boot/zImage
IMAGE_mips = vmlinuz
IMAGE_riscv = arch/riscv/boot/Image
IMAGE_s390 = arch/s390/boot/bzImage
IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi
IMAGE = $(IMAGE_$(ARCH))
IMAGE_NAME = $(notdir $(IMAGE))
# default kernel configurations that appear to be usable
DEFCONFIG_i386 = defconfig
DEFCONFIG_x86_64 = defconfig
DEFCONFIG_x86 = defconfig
DEFCONFIG_arm64 = defconfig
DEFCONFIG_arm = multi_v7_defconfig
DEFCONFIG_mips = malta_defconfig
DEFCONFIG_riscv = defconfig
DEFCONFIG_s390 = defconfig
DEFCONFIG = $(DEFCONFIG_$(ARCH))
DEFCONFIG_i386 = defconfig
DEFCONFIG_x86_64 = defconfig
DEFCONFIG_x86 = defconfig
DEFCONFIG_arm64 = defconfig
DEFCONFIG_arm = multi_v7_defconfig
DEFCONFIG_mips = malta_defconfig
DEFCONFIG_riscv = defconfig
DEFCONFIG_s390 = defconfig
DEFCONFIG_loongarch = defconfig
DEFCONFIG = $(DEFCONFIG_$(ARCH))
# optional tests to run (default = all)
TEST =
# QEMU_ARCH: arch names used by qemu
QEMU_ARCH_i386 = i386
QEMU_ARCH_x86_64 = x86_64
QEMU_ARCH_x86 = x86_64
QEMU_ARCH_arm64 = aarch64
QEMU_ARCH_arm = arm
QEMU_ARCH_mips = mipsel # works with malta_defconfig
QEMU_ARCH_riscv = riscv64
QEMU_ARCH_s390 = s390x
QEMU_ARCH = $(QEMU_ARCH_$(ARCH))
QEMU_ARCH_i386 = i386
QEMU_ARCH_x86_64 = x86_64
QEMU_ARCH_x86 = x86_64
QEMU_ARCH_arm64 = aarch64
QEMU_ARCH_arm = arm
QEMU_ARCH_mips = mipsel # works with malta_defconfig
QEMU_ARCH_riscv = riscv64
QEMU_ARCH_s390 = s390x
QEMU_ARCH_loongarch = loongarch64
QEMU_ARCH = $(QEMU_ARCH_$(ARCH))
# QEMU_ARGS : some arch-specific args to pass to qemu
QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_mips = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS = $(QEMU_ARGS_$(ARCH))
QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_mips = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS = $(QEMU_ARGS_$(ARCH))
# OUTPUT is only set when run from the main makefile, otherwise
# it defaults to this nolibc directory.
@ -70,8 +76,16 @@ else
Q=@
endif
CFLAGS_STACKPROTECTOR = -DNOLIBC_STACKPROTECTOR \
$(call cc-option,-mstack-protector-guard=global) \
$(call cc-option,-fstack-protector-all)
CFLAGS_STKP_i386 = $(CFLAGS_STACKPROTECTOR)
CFLAGS_STKP_x86_64 = $(CFLAGS_STACKPROTECTOR)
CFLAGS_STKP_x86 = $(CFLAGS_STACKPROTECTOR)
CFLAGS_s390 = -m64
CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables $(CFLAGS_$(ARCH))
CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables \
$(call cc-option,-fno-stack-protector) \
$(CFLAGS_STKP_$(ARCH)) $(CFLAGS_$(ARCH))
LDFLAGS := -s
help:

221
tools/testing/selftests/nolibc/nolibc-test.c
View File

@ -130,111 +130,111 @@ static int pad_spc(int llen, int cnt, const char *fmt, ...)
*/
#define EXPECT_ZR(cond, expr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_zr(expr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_zr(expr, llen); } while (0)
static int expect_zr(int expr, int llen)
{
int ret = !(expr == 0);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_NZ(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_nz(expr, llen; } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_nz(expr, llen; } while (0)
static int expect_nz(int expr, int llen)
{
int ret = !(expr != 0);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_EQ(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_eq(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_eq(expr, llen, val); } while (0)
static int expect_eq(int expr, int llen, int val)
static int expect_eq(uint64_t expr, int llen, uint64_t val)
{
int ret = !(expr == val);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
llen += printf(" = %lld ", expr);
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_NE(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ne(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ne(expr, llen, val); } while (0)
static int expect_ne(int expr, int llen, int val)
{
int ret = !(expr != val);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_GE(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ge(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ge(expr, llen, val); } while (0)
static int expect_ge(int expr, int llen, int val)
{
int ret = !(expr >= val);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_GT(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_gt(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_gt(expr, llen, val); } while (0)
static int expect_gt(int expr, int llen, int val)
{
int ret = !(expr > val);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_LE(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_le(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_le(expr, llen, val); } while (0)
static int expect_le(int expr, int llen, int val)
{
int ret = !(expr <= val);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_LT(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_lt(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_lt(expr, llen, val); } while (0)
static int expect_lt(int expr, int llen, int val)
{
int ret = !(expr < val);
llen += printf(" = %d ", expr);
pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
#define EXPECT_SYSZR(cond, expr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syszr(expr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syszr(expr, llen); } while (0)
static int expect_syszr(int expr, int llen)
{
@ -243,17 +243,17 @@ static int expect_syszr(int expr, int llen)
if (expr) {
ret = 1;
llen += printf(" = %d %s ", expr, errorname(errno));
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += printf(" = %d ", expr);
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_SYSEQ(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syseq(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syseq(expr, llen, val); } while (0)
static int expect_syseq(int expr, int llen, int val)
{
@ -262,17 +262,17 @@ static int expect_syseq(int expr, int llen, int val)
if (expr != val) {
ret = 1;
llen += printf(" = %d %s ", expr, errorname(errno));
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += printf(" = %d ", expr);
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_SYSNE(cond, expr, val) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_sysne(expr, llen, val); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_sysne(expr, llen, val); } while (0)
static int expect_sysne(int expr, int llen, int val)
{
@ -281,17 +281,17 @@ static int expect_sysne(int expr, int llen, int val)
if (expr == val) {
ret = 1;
llen += printf(" = %d %s ", expr, errorname(errno));
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += printf(" = %d ", expr);
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_SYSER(cond, expr, expret, experr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syserr(expr, expret, experr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syserr(expr, expret, experr, llen); } while (0)
static int expect_syserr(int expr, int expret, int experr, int llen)
{
@ -302,16 +302,16 @@ static int expect_syserr(int expr, int expret, int experr, int llen)
if (expr != expret || _errno != experr) {
ret = 1;
llen += printf(" != (%d %s) ", expret, errorname(experr));
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_PTRZR(cond, expr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ptrzr(expr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ptrzr(expr, llen); } while (0)
static int expect_ptrzr(const void *expr, int llen)
{
@ -320,16 +320,16 @@ static int expect_ptrzr(const void *expr, int llen)
llen += printf(" = <%p> ", expr);
if (expr) {
ret = 1;
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_PTRNZ(cond, expr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ptrnz(expr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ptrnz(expr, llen); } while (0)
static int expect_ptrnz(const void *expr, int llen)
{
@ -338,16 +338,16 @@ static int expect_ptrnz(const void *expr, int llen)
llen += printf(" = <%p> ", expr);
if (!expr) {
ret = 1;
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_STRZR(cond, expr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strzr(expr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strzr(expr, llen); } while (0)
static int expect_strzr(const char *expr, int llen)
{
@ -356,16 +356,16 @@ static int expect_strzr(const char *expr, int llen)
llen += printf(" = <%s> ", expr);
if (expr) {
ret = 1;
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_STRNZ(cond, expr) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strnz(expr, llen); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strnz(expr, llen); } while (0)
static int expect_strnz(const char *expr, int llen)
{
@ -374,16 +374,16 @@ static int expect_strnz(const char *expr, int llen)
llen += printf(" = <%s> ", expr);
if (!expr) {
ret = 1;
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_STREQ(cond, expr, cmp) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_streq(expr, llen, cmp); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_streq(expr, llen, cmp); } while (0)
static int expect_streq(const char *expr, int llen, const char *cmp)
{
@ -392,16 +392,16 @@ static int expect_streq(const char *expr, int llen, const char *cmp)
llen += printf(" = <%s> ", expr);
if (strcmp(expr, cmp) != 0) {
ret = 1;
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
#define EXPECT_STRNE(cond, expr, cmp) \
do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strne(expr, llen, cmp); } while (0)
do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strne(expr, llen, cmp); } while (0)
static int expect_strne(const char *expr, int llen, const char *cmp)
{
@ -410,9 +410,9 @@ static int expect_strne(const char *expr, int llen, const char *cmp)
llen += printf(" = <%s> ", expr);
if (strcmp(expr, cmp) == 0) {
ret = 1;
llen += pad_spc(llen, 40, "[FAIL]\n");
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 40, " [OK]\n");
llen += pad_spc(llen, 64, " [OK]\n");
}
return ret;
}
@ -477,6 +477,7 @@ static int test_getpagesize(void)
int run_syscall(int min, int max)
{
struct stat stat_buf;
int euid0;
int proc;
int test;
int tmp;
@ -486,6 +487,9 @@ int run_syscall(int min, int max)
/* <proc> indicates whether or not /proc is mounted */
proc = stat("/proc", &stat_buf) == 0;
/* this will be used to skip certain tests that can't be run unprivileged */
euid0 = geteuid() == 0;
for (test = min; test >= 0 && test <= max; test++) {
int llen = 0; // line length
@ -511,7 +515,7 @@ int run_syscall(int min, int max)
CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break;
CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
CASE_TEST(chroot_root); EXPECT_SYSZR(1, chroot("/")); break;
CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
CASE_TEST(chroot_exe); EXPECT_SYSER(proc, chroot("/proc/self/exe"), -1, ENOTDIR); break;
CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
@ -536,7 +540,7 @@ int run_syscall(int min, int max)
CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
CASE_TEST(link_dir); EXPECT_SYSER(1, link("/", "/blah"), -1, EPERM); break;
CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/net", "/blah"), -1, EXDEV); break;
CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
@ -602,6 +606,59 @@ int run_stdlib(int min, int max)
CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) INTPTR_MIN); break;
CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) INTPTR_MAX); break;
CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) INTPTR_MIN); break;
CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) INTPTR_MAX); break;
CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INTPTR_MIN); break;
CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INTPTR_MAX); break;
CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINTPTR_MAX); break;
#if __SIZEOF_LONG__ == 8
CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break;
CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break;
CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break;
CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break;
CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break;
CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break;
#elif __SIZEOF_LONG__ == 4
CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x80000000); break;
CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffff); break;
CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break;
CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break;
CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break;
CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffU); break;
#else
# warning "__SIZEOF_LONG__ is undefined"
#endif /* __SIZEOF_LONG__ */
case __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
@ -610,6 +667,63 @@ int run_stdlib(int min, int max)
return ret;
}
#if defined(__clang__)
__attribute__((optnone))
#elif defined(__GNUC__)
__attribute__((optimize("O0")))
#endif
static int smash_stack(void)
{
char buf[100];
for (size_t i = 0; i < 200; i++)
buf[i] = 'P';
return 1;
}
static int run_protection(int min, int max)
{
pid_t pid;
int llen = 0, status;
llen += printf("0 -fstackprotector ");
#if !defined(NOLIBC_STACKPROTECTOR)
llen += printf("not supported");
pad_spc(llen, 64, "[SKIPPED]\n");
return 0;
#endif
pid = -1;
pid = fork();
switch (pid) {
case -1:
llen += printf("fork()");
pad_spc(llen, 64, "[FAIL]\n");
return 1;
case 0:
close(STDOUT_FILENO);
close(STDERR_FILENO);
smash_stack();
return 1;
default:
pid = waitpid(pid, &status, 0);
if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
llen += printf("waitpid()");
pad_spc(llen, 64, "[FAIL]\n");
return 1;
}
pad_spc(llen, 64, " [OK]\n");
return 0;
}
}
/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
int prepare(void)
{
@ -660,10 +774,11 @@ int prepare(void)
}
/* This is the definition of known test names, with their functions */
static struct test test_names[] = {
static const struct test test_names[] = {
/* add new tests here */
{ .name = "syscall", .func = run_syscall },
{ .name = "stdlib", .func = run_stdlib },
{ .name = "syscall", .func = run_syscall },
{ .name = "stdlib", .func = run_stdlib },
{ .name = "protection", .func = run_protection },
{ 0 }
};