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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1448c721e4
This was found by inspection while tracking a similar bug in compat_statfs64, that has been fixed in mainline since decemeber. - This fixes a bug where not all of the f_spare fields were cleared on mips and s390. - Add the f_flags field to struct compat_statfs - Copy f_flags to userspace in case someone cares. - Use __clear_user to copy the f_spare field to userspace to ensure that all of the elements of f_spare are cleared. On some architectures f_spare is has 5 ints and on some architectures f_spare only has 4 ints. Which makes the previous technique of clearing each int individually broken. I don't expect anyone actually uses the old statfs system call anymore but if they do let them benefit from having the compat and the native version working the same. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
251 lines
5.0 KiB
C
251 lines
5.0 KiB
C
#ifndef _ASM_SPARC64_COMPAT_H
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#define _ASM_SPARC64_COMPAT_H
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/*
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* Architecture specific compatibility types
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*/
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#include <linux/types.h>
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#define COMPAT_USER_HZ 100
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#define COMPAT_UTS_MACHINE "sparc\0\0"
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typedef u32 compat_size_t;
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typedef s32 compat_ssize_t;
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typedef s32 compat_time_t;
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typedef s32 compat_clock_t;
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typedef s32 compat_pid_t;
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typedef u16 __compat_uid_t;
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typedef u16 __compat_gid_t;
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typedef u32 __compat_uid32_t;
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typedef u32 __compat_gid32_t;
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typedef u16 compat_mode_t;
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typedef u32 compat_ino_t;
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typedef u16 compat_dev_t;
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typedef s32 compat_off_t;
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typedef s64 compat_loff_t;
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typedef s16 compat_nlink_t;
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typedef u16 compat_ipc_pid_t;
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typedef s32 compat_daddr_t;
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typedef u32 compat_caddr_t;
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typedef __kernel_fsid_t compat_fsid_t;
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typedef s32 compat_key_t;
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typedef s32 compat_timer_t;
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typedef s32 compat_int_t;
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typedef s32 compat_long_t;
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typedef s64 compat_s64;
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typedef u32 compat_uint_t;
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typedef u32 compat_ulong_t;
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typedef u64 compat_u64;
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struct compat_timespec {
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compat_time_t tv_sec;
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s32 tv_nsec;
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};
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struct compat_timeval {
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compat_time_t tv_sec;
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s32 tv_usec;
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};
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struct compat_stat {
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compat_dev_t st_dev;
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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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compat_off_t st_size;
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compat_time_t st_atime;
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compat_ulong_t st_atime_nsec;
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compat_time_t st_mtime;
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compat_ulong_t st_mtime_nsec;
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compat_time_t st_ctime;
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compat_ulong_t st_ctime_nsec;
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compat_off_t st_blksize;
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compat_off_t st_blocks;
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u32 __unused4[2];
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};
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struct compat_stat64 {
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unsigned long long st_dev;
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unsigned long long st_ino;
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unsigned int st_mode;
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unsigned int st_nlink;
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unsigned int st_uid;
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unsigned int st_gid;
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unsigned long long st_rdev;
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unsigned char __pad3[8];
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long long st_size;
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unsigned int st_blksize;
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unsigned char __pad4[8];
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unsigned int st_blocks;
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unsigned int st_atime;
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unsigned int st_atime_nsec;
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unsigned int st_mtime;
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unsigned int st_mtime_nsec;
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unsigned int st_ctime;
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unsigned int st_ctime_nsec;
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unsigned int __unused4;
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unsigned int __unused5;
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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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compat_pid_t l_pid;
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short __unused;
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};
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#define F_GETLK64 12
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#define F_SETLK64 13
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#define F_SETLKW64 14
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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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short __unused;
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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_blocks;
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int f_bfree;
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int f_bavail;
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int f_files;
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int f_ffree;
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compat_fsid_t f_fsid;
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int f_namelen; /* SunOS ignores this field. */
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int f_frsize;
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int f_flags;
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int f_spare[4];
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};
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#define COMPAT_RLIM_INFINITY 0x7fffffff
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typedef u32 compat_old_sigset_t;
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#define _COMPAT_NSIG 64
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#define _COMPAT_NSIG_BPW 32
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typedef u32 compat_sigset_word;
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#define COMPAT_OFF_T_MAX 0x7fffffff
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#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
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/*
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* A pointer passed in from user mode. This should not
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* be used for syscall parameters, just declare them
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* as pointers because the syscall entry code will have
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* appropriately converted them already.
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*/
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typedef u32 compat_uptr_t;
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static inline void __user *compat_ptr(compat_uptr_t uptr)
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{
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return (void __user *)(unsigned long)uptr;
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}
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static inline compat_uptr_t ptr_to_compat(void __user *uptr)
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{
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return (u32)(unsigned long)uptr;
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}
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static inline void __user *arch_compat_alloc_user_space(long len)
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{
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struct pt_regs *regs = current_thread_info()->kregs;
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unsigned long usp = regs->u_regs[UREG_I6];
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if (!(test_thread_flag(TIF_32BIT)))
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usp += STACK_BIAS;
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else
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usp &= 0xffffffffUL;
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usp -= len;
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usp &= ~0x7UL;
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return (void __user *) usp;
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}
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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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unsigned short __pad1;
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compat_mode_t mode;
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unsigned short __pad2;
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unsigned short seq;
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unsigned long __unused1; /* yes they really are 64bit pads */
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unsigned long __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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unsigned int __pad1;
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compat_time_t sem_otime;
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unsigned int __pad2;
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compat_time_t sem_ctime;
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u32 sem_nsems;
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u32 __unused1;
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u32 __unused2;
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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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unsigned int __pad1;
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compat_time_t msg_stime;
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unsigned int __pad2;
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compat_time_t msg_rtime;
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unsigned int __pad3;
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compat_time_t msg_ctime;
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unsigned int msg_cbytes;
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unsigned int msg_qnum;
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unsigned int msg_qbytes;
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compat_pid_t msg_lspid;
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compat_pid_t msg_lrpid;
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unsigned int __unused1;
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unsigned int __unused2;
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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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unsigned int __pad1;
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compat_time_t shm_atime;
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unsigned int __pad2;
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compat_time_t shm_dtime;
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unsigned int __pad3;
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compat_time_t shm_ctime;
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compat_size_t shm_segsz;
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compat_pid_t shm_cpid;
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compat_pid_t shm_lpid;
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unsigned int shm_nattch;
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unsigned int __unused1;
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unsigned int __unused2;
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};
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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);
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}
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#endif /* _ASM_SPARC64_COMPAT_H */
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