Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2001 IBM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * These routines maintain argument size conversion between 32bit and 64bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * environment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/fs.h> 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/mm.h> 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/file.h> 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/resource.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/times.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/sem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/msg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/shm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/personality.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/mman.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <linux/binfmts.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include <linux/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include <linux/ipc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #include <asm/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #include <asm/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #include <asm/ppc-pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #include <asm/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #include <asm/switch_to.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 			  unsigned long prot, unsigned long flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			  unsigned long fd, unsigned long pgoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	/* This should remain 12 even if PAGE_SIZE changes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) /* 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60)  * long long munging:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61)  * The 32 bit ABI passes long longs in an odd even register pair.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 			     u32 reg6, u32 poshi, u32 poslo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	return ksys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			      u32 reg6, u32 poshi, u32 poslo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	return ksys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	return ksys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 				unsigned long high, unsigned long low)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	return ksys_truncate(path, (high << 32) | low);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 				     u32 lenhi, u32 lenlo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			     ((loff_t)lenhi << 32) | lenlo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 				 unsigned long low)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	return ksys_ftruncate(fd, (high << 32) | low);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		     size_t len, int advice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 				 advice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 				   unsigned offset_hi, unsigned offset_lo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 				   unsigned nbytes_hi, unsigned nbytes_lo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	return ksys_sync_file_range(fd, offset, nbytes, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }