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306f7cc1e9
The F_GETLK64/F_SETLK64/F_SETLKW64 fcntl opcodes are only implemented for the 32-bit syscall APIs, but are also needed for compat handling on 64-bit kernels. Consolidate them in unistd.h instead of definining the internal compat definitions in compat.h, which is rather error prone (e.g. parisc gets the values wrong currently). Note that before this change they were never visible to userspace due to the fact that CONFIG_64BIT is only set for kernel builds. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Guo Ren <guoren@kernel.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20220405071314.3225832-3-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
178 lines
3.7 KiB
C
178 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_COMPAT_H
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#define _ASM_COMPAT_H
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/*
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* Architecture specific compatibility types
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*/
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#include <linux/thread_info.h>
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#include <linux/types.h>
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#include <asm/page.h>
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#include <asm/ptrace.h>
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typedef s32 __compat_uid_t;
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typedef s32 __compat_gid_t;
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typedef __compat_uid_t __compat_uid32_t;
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typedef __compat_gid_t __compat_gid32_t;
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#define __compat_uid32_t __compat_uid32_t
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#define __compat_gid32_t __compat_gid32_t
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#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
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#define _COMPAT_NSIG_BPW 32
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typedef u32 compat_sigset_word;
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#include <asm-generic/compat.h>
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#define COMPAT_USER_HZ 100
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#define COMPAT_UTS_MACHINE "mips\0\0\0"
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typedef u32 compat_dev_t;
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typedef u32 compat_nlink_t;
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typedef s32 compat_ipc_pid_t;
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typedef struct {
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s32 val[2];
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} compat_fsid_t;
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struct compat_stat {
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compat_dev_t st_dev;
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s32 st_pad1[3];
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compat_ino_t st_ino;
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compat_mode_t st_mode;
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compat_nlink_t st_nlink;
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__compat_uid_t st_uid;
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__compat_gid_t st_gid;
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compat_dev_t st_rdev;
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s32 st_pad2[2];
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compat_off_t st_size;
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s32 st_pad3;
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old_time32_t st_atime;
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s32 st_atime_nsec;
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old_time32_t st_mtime;
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s32 st_mtime_nsec;
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old_time32_t st_ctime;
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s32 st_ctime_nsec;
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s32 st_blksize;
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s32 st_blocks;
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s32 st_pad4[14];
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};
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struct compat_flock {
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short l_type;
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short l_whence;
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compat_off_t l_start;
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compat_off_t l_len;
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s32 l_sysid;
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compat_pid_t l_pid;
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s32 pad[4];
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};
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struct compat_flock64 {
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short l_type;
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short l_whence;
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compat_loff_t l_start;
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compat_loff_t l_len;
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compat_pid_t l_pid;
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};
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struct compat_statfs {
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int f_type;
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int f_bsize;
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int f_frsize;
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int f_blocks;
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int f_bfree;
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int f_files;
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int f_ffree;
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int f_bavail;
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compat_fsid_t f_fsid;
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int f_namelen;
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int f_flags;
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int f_spare[5];
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};
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#define COMPAT_RLIM_INFINITY 0x7fffffffUL
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#define COMPAT_OFF_T_MAX 0x7fffffff
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struct compat_ipc64_perm {
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compat_key_t key;
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__compat_uid32_t uid;
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__compat_gid32_t gid;
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__compat_uid32_t cuid;
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__compat_gid32_t cgid;
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compat_mode_t mode;
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unsigned short seq;
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unsigned short __pad2;
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compat_ulong_t __unused1;
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compat_ulong_t __unused2;
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};
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struct compat_semid64_ds {
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struct compat_ipc64_perm sem_perm;
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compat_ulong_t sem_otime;
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compat_ulong_t sem_ctime;
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compat_ulong_t sem_nsems;
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compat_ulong_t sem_otime_high;
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compat_ulong_t sem_ctime_high;
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};
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struct compat_msqid64_ds {
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struct compat_ipc64_perm msg_perm;
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#ifndef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_stime_high;
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#endif
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compat_ulong_t msg_stime;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_stime_high;
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#endif
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#ifndef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_rtime_high;
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#endif
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compat_ulong_t msg_rtime;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_rtime_high;
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#endif
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#ifndef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_ctime_high;
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#endif
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compat_ulong_t msg_ctime;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_ctime_high;
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#endif
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compat_ulong_t msg_cbytes;
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compat_ulong_t msg_qnum;
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compat_ulong_t msg_qbytes;
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compat_pid_t msg_lspid;
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compat_pid_t msg_lrpid;
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compat_ulong_t __unused4;
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compat_ulong_t __unused5;
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};
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struct compat_shmid64_ds {
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struct compat_ipc64_perm shm_perm;
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compat_size_t shm_segsz;
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compat_ulong_t shm_atime;
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compat_ulong_t shm_dtime;
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compat_ulong_t shm_ctime;
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compat_pid_t shm_cpid;
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compat_pid_t shm_lpid;
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compat_ulong_t shm_nattch;
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compat_ushort_t shm_atime_high;
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compat_ushort_t shm_dtime_high;
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compat_ushort_t shm_ctime_high;
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compat_ushort_t __unused2;
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};
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/* MIPS has unusual order of fields in stack_t */
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typedef struct compat_sigaltstack {
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compat_uptr_t ss_sp;
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compat_size_t ss_size;
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int ss_flags;
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} compat_stack_t;
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#define compat_sigaltstack compat_sigaltstack
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static inline int is_compat_task(void)
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{
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return test_thread_flag(TIF_32BIT_ADDR);
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}
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#endif /* _ASM_COMPAT_H */
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