// Copyright 2021 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_STAT_H_ #define SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_STAT_H_ #include <stdint.h> #include "build/build_config.h" #include "sandbox/linux/system_headers/linux_syscalls.h" #if defined(ARCH_CPU_MIPS_FAMILY) struct kernel_stat64 { unsigned st_dev; unsigned __pad0[3]; unsigned long long st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned st_rdev; unsigned __pad1[3]; long long st_size; unsigned st_atime_; unsigned st_atime_nsec_; unsigned st_mtime_; unsigned st_mtime_nsec_; unsigned st_ctime_; unsigned st_ctime_nsec_; unsigned st_blksize; unsigned __pad2; unsigned long long st_blocks; }; #else struct kernel_stat64 { … }; #endif #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) struct kernel_stat { /* The kernel headers suggest that st_dev and st_rdev should be 32bit * quantities encoding 12bit major and 20bit minor numbers in an interleaved * format. In reality, we do not see useful data in the top bits. So, * we'll leave the padding in here, until we find a better solution. */ unsigned short st_dev; short pad1; unsigned st_ino; unsigned short st_mode; unsigned short st_nlink; unsigned short st_uid; unsigned short st_gid; unsigned short st_rdev; short pad2; unsigned st_size; unsigned st_blksize; unsigned st_blocks; unsigned st_atime_; unsigned st_atime_nsec_; unsigned st_mtime_; unsigned st_mtime_nsec_; unsigned st_ctime_; unsigned st_ctime_nsec_; unsigned __unused4; unsigned __unused5; }; #elif defined(__x86_64__) struct kernel_stat { … }; #elif (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) struct kernel_stat { unsigned st_dev; unsigned __pad0[3]; unsigned long st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned st_rdev; unsigned __pad1[3]; long st_size; unsigned st_atime_; unsigned st_atime_nsec_; unsigned st_mtime_; unsigned st_mtime_nsec_; unsigned st_ctime_; unsigned st_ctime_nsec_; unsigned st_blksize; unsigned __pad2; unsigned long st_blocks; }; #elif (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_32_BITS)) struct kernel_stat { unsigned st_dev; int st_pad1[3]; unsigned st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned st_rdev; int st_pad2[2]; long st_size; int st_pad3; long st_atime_; long st_atime_nsec_; long st_mtime_; long st_mtime_nsec_; long st_ctime_; long st_ctime_nsec_; int st_blksize; int st_blocks; int st_pad4[14]; }; #elif defined(__aarch64__) struct kernel_stat { unsigned long st_dev; unsigned long st_ino; unsigned int st_mode; unsigned int st_nlink; unsigned int st_uid; unsigned int st_gid; unsigned long st_rdev; unsigned long __pad1; long st_size; int st_blksize; int __pad2; long st_blocks; long st_atime_; unsigned long st_atime_nsec_; long st_mtime_; unsigned long st_mtime_nsec_; long st_ctime_; unsigned long st_ctime_nsec_; unsigned int __unused4; unsigned int __unused5; }; #endif #if !defined(AT_EMPTY_PATH) #define AT_EMPTY_PATH … #endif #if !defined(STATX_BASIC_STATS) #define STATX_BASIC_STATS … #endif // On 32-bit systems, we default to the 64-bit stat struct like libc // implementations do. Otherwise we default to the normal stat struct which is // already 64-bit. // These defines make it easy to call the right syscall to fill out a 64-bit // stat struct, which is the default in libc implementations but requires // different syscall names on 32 and 64-bit platforms. #if defined(__NR_fstatat64) namespace sandbox { using default_stat_struct = struct kernel_stat64; } // namespace sandbox #define __NR_fstatat_default … #define __NR_fstat_default … #elif defined(__NR_newfstatat) namespace sandbox { default_stat_struct; } // namespace sandbox #define __NR_fstatat_default … #define __NR_fstat_default … #else #error "one of fstatat64 and newfstatat must be defined" #endif #endif // SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_STAT_H_
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