/* * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls. * * Copyright (C) 2001 IBM * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) * * These routines maintain argument size conversion between 32bit and 64bit * environment. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/fs.h> #include <linux/mm.h> #include <linux/file.h> #include <linux/signal.h> #include <linux/resource.h> #include <linux/times.h> #include <linux/utsname.h> #include <linux/timex.h> #include <linux/smp.h> #include <linux/smp_lock.h> #include <linux/sem.h> #include <linux/msg.h> #include <linux/shm.h> #include <linux/poll.h> #include <linux/personality.h> #include <linux/stat.h> #include <linux/mman.h> #include <linux/in.h> #include <linux/syscalls.h> #include <linux/unistd.h> #include <linux/sysctl.h> #include <linux/binfmts.h> #include <linux/security.h> #include <linux/compat.h> #include <linux/ptrace.h> #include <linux/elf.h> #include <asm/ptrace.h> #include <asm/types.h> #include <asm/ipc.h> #include <asm/uaccess.h> #include <asm/unistd.h> #include <asm/semaphore.h> #include <asm/time.h> #include <asm/mmu_context.h> #include <asm/systemcfg.h> #include "pci.h" /* readdir & getdents */ #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1)) struct old_linux_dirent32 { u32 d_ino; u32 d_offset; unsigned short d_namlen; char d_name[1]; }; struct readdir_callback32 { struct old_linux_dirent32 __user * dirent; int count; }; static int fillonedir(void * __buf, const char * name, int namlen, off_t offset, ino_t ino, unsigned int d_type) { struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf; struct old_linux_dirent32 __user * dirent; if (buf->count) return -EINVAL; buf->count++; dirent = buf->dirent; put_user(ino, &dirent->d_ino); put_user(offset, &dirent->d_offset); put_user(namlen, &dirent->d_namlen); copy_to_user(dirent->d_name, name, namlen); put_user(0, dirent->d_name + namlen); return 0; } asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count) { int error = -EBADF; struct file * file; struct readdir_callback32 buf; file = fget(fd); if (!file) goto out; buf.count = 0; buf.dirent = dirent; error = vfs_readdir(file, (filldir_t)fillonedir, &buf); if (error < 0) goto out_putf; error = buf.count; out_putf: fput(file); out: return error; } struct linux_dirent32 { u32 d_ino; u32 d_off; unsigned short d_reclen; char d_name[1]; }; struct getdents_callback32 { struct linux_dirent32 __user * current_dir; struct linux_dirent32 __user * previous; int count; int error; }; static int filldir(void * __buf, const char * name, int namlen, off_t offset, ino_t ino, unsigned int d_type) { struct linux_dirent32 __user * dirent; struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf; int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2); buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; dirent = buf->previous; if (dirent) { if (__put_user(offset, &dirent->d_off)) goto efault; } dirent = buf->current_dir; if (__put_user(ino, &dirent->d_ino)) goto efault; if (__put_user(reclen, &dirent->d_reclen)) goto efault; if (copy_to_user(dirent->d_name, name, namlen)) goto efault; if (__put_user(0, dirent->d_name + namlen)) goto efault; if (__put_user(d_type, (char __user *) dirent + reclen - 1)) goto efault; buf->previous = dirent; dirent = (void __user *)dirent + reclen; buf->current_dir = dirent; buf->count -= reclen; return 0; efault: buf->error = -EFAULT; return -EFAULT; } asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent, unsigned int count) { struct file * file; struct linux_dirent32 __user * lastdirent; struct getdents_callback32 buf; int error; error = -EFAULT; if (!access_ok(VERIFY_WRITE, dirent, count)) goto out; error = -EBADF; file = fget(fd); if (!file) goto out; buf.current_dir = dirent; buf.previous = NULL; buf.count = count; buf.error = 0; error = vfs_readdir(file, (filldir_t)filldir, &buf); if (error < 0) goto out_putf; error = buf.error; lastdirent = buf.previous; if (lastdirent) { if (put_user(file->f_pos, &lastdirent->d_off)) error = -EFAULT; else error = count - buf.count; } out_putf: fput(file); out: return error; } asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, compat_uptr_t tvp_x) { /* sign extend n */ return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x)); } int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) { long err; if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) return -EOVERFLOW; err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT; err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev); err |= __put_user(stat->ino, &statbuf->st_ino); err |= __put_user(stat->mode, &statbuf->st_mode); err |= __put_user(stat->nlink, &statbuf->st_nlink); err |= __put_user(stat->uid, &statbuf->st_uid); err |= __put_user(stat->gid, &statbuf->st_gid); err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev); err |= __put_user(stat->size, &statbuf->st_size); err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime); err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime); err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime); err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); err |= __put_user(stat->blksize, &statbuf->st_blksize); err |= __put_user(stat->blocks, &statbuf->st_blocks); err |= __put_user(0, &statbuf->__unused4[0]); err |= __put_user(0, &statbuf->__unused4[1]); return err; } /* Note: it is necessary to treat option as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sysfs(u32 option, u32 arg1, u32 arg2) { return sys_sysfs((int)option, arg1, arg2); } /* Handle adjtimex compatibility. */ struct timex32 { u32 modes; s32 offset, freq, maxerror, esterror; s32 status, constant, precision, tolerance; struct compat_timeval time; s32 tick; s32 ppsfreq, jitter, shift, stabil; s32 jitcnt, calcnt, errcnt, stbcnt; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; }; extern int do_adjtimex(struct timex *); extern void ppc_adjtimex(void); asmlinkage long sys32_adjtimex(struct timex32 __user *utp) { struct timex txc; int ret; memset(&txc, 0, sizeof(struct timex)); if(get_user(txc.modes, &utp->modes) || __get_user(txc.offset, &utp->offset) || __get_user(txc.freq, &utp->freq) || __get_user(txc.maxerror, &utp->maxerror) || __get_user(txc.esterror, &utp->esterror) || __get_user(txc.status, &utp->status) || __get_user(txc.constant, &utp->constant) || __get_user(txc.precision, &utp->precision) || __get_user(txc.tolerance, &utp->tolerance) || __get_user(txc.time.tv_sec, &utp->time.tv_sec) || __get_user(txc.time.tv_usec, &utp->time.tv_usec) || __get_user(txc.tick, &utp->tick) || __get_user(txc.ppsfreq, &utp->ppsfreq) || __get_user(txc.jitter, &utp->jitter) || __get_user(txc.shift, &utp->shift) || __get_user(txc.stabil, &utp->stabil) || __get_user(txc.jitcnt, &utp->jitcnt) || __get_user(txc.calcnt, &utp->calcnt) || __get_user(txc.errcnt, &utp->errcnt) || __get_user(txc.stbcnt, &utp->stbcnt)) return -EFAULT; ret = do_adjtimex(&txc); /* adjust the conversion of TB to time of day to track adjtimex */ ppc_adjtimex(); if(put_user(txc.modes, &utp->modes) || __put_user(txc.offset, &utp->offset) || __put_user(txc.freq, &utp->freq) || __put_user(txc.maxerror, &utp->maxerror) || __put_user(txc.esterror, &utp->esterror) || __put_user(txc.status, &utp->status) || __put_user(txc.constant, &utp->constant) || __put_user(txc.precision, &utp->precision) || __put_user(txc.tolerance, &utp->tolerance) || __put_user(txc.time.tv_sec, &utp->time.tv_sec) || __put_user(txc.time.tv_usec, &utp->time.tv_usec) || __put_user(txc.tick, &utp->tick) || __put_user(txc.ppsfreq, &utp->ppsfreq) || __put_user(txc.jitter, &utp->jitter) || __put_user(txc.shift, &utp->shift) || __put_user(txc.stabil, &utp->stabil) || __put_user(txc.jitcnt, &utp->jitcnt) || __put_user(txc.calcnt, &utp->calcnt) || __put_user(txc.errcnt, &utp->errcnt) || __put_user(txc.stbcnt, &utp->stbcnt)) ret = -EFAULT; return ret; } asmlinkage long sys32_pause(void) { current->state = TASK_INTERRUPTIBLE; schedule(); return -ERESTARTNOHAND; } static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) { long usec; if (!access_ok(VERIFY_READ, i, sizeof(*i))) return -EFAULT; if (__get_user(o->tv_sec, &i->tv_sec)) return -EFAULT; if (__get_user(usec, &i->tv_usec)) return -EFAULT; o->tv_nsec = usec * 1000; return 0; } static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i) { return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || (__put_user(i->tv_sec, &o->tv_sec) | __put_user(i->tv_usec, &o->tv_usec))); } struct sysinfo32 { s32 uptime; u32 loads[3]; u32 totalram; u32 freeram; u32 sharedram; u32 bufferram; u32 totalswap; u32 freeswap; unsigned short procs; unsigned short pad; u32 totalhigh; u32 freehigh; u32 mem_unit; char _f[20-2*sizeof(int)-sizeof(int)]; }; asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info) { struct sysinfo s; int ret, err; int bitcount=0; mm_segment_t old_fs = get_fs (); /* The __user cast is valid due to set_fs() */ set_fs (KERNEL_DS); ret = sys_sysinfo((struct sysinfo __user *)&s); set_fs (old_fs); /* Check to see if any memory value is too large for 32-bit and * scale down if needed. */ if ((s.totalram >> 32) || (s.totalswap >> 32)) { while (s.mem_unit < PAGE_SIZE) { s.mem_unit <<= 1; bitcount++; } s.totalram >>=bitcount; s.freeram >>= bitcount; s.sharedram >>= bitcount; s.bufferram >>= bitcount; s.totalswap >>= bitcount; s.freeswap >>= bitcount; s.totalhigh >>= bitcount; s.freehigh >>= bitcount; } err = put_user (s.uptime, &info->uptime); err |= __put_user (s.loads[0], &info->loads[0]); err |= __put_user (s.loads[1], &info->loads[1]); err |= __put_user (s.loads[2], &info->loads[2]); err |= __put_user (s.totalram, &info->totalram); err |= __put_user (s.freeram, &info->freeram); err |= __put_user (s.sharedram, &info->sharedram); err |= __put_user (s.bufferram, &info->bufferram); err |= __put_user (s.totalswap, &info->totalswap); err |= __put_user (s.freeswap, &info->freeswap); err |= __put_user (s.procs, &info->procs); err |= __put_user (s.totalhigh, &info->totalhigh); err |= __put_user (s.freehigh, &info->freehigh); err |= __put_user (s.mem_unit, &info->mem_unit); if (err) return -EFAULT; return ret; } /* Translations due to time_t size differences. Which affects all sorts of things, like timeval and itimerval. */ extern struct timezone sys_tz; asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) { if (tv) { struct timeval ktv; do_gettimeofday(&ktv); if (put_tv32(tv, &ktv)) return -EFAULT; } if (tz) { if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) return -EFAULT; } return 0; } asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) { struct timespec kts; struct timezone ktz; if (tv) { if (get_ts32(&kts, tv)) return -EFAULT; } if (tz) { if (copy_from_user(&ktz, tz, sizeof(ktz))) return -EFAULT; } return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); } #ifdef CONFIG_SYSVIPC long sys32_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth) { int version; version = call >> 16; /* hack for backward compatibility */ call &= 0xffff; switch (call) { case SEMTIMEDOP: if (fifth) /* sign extend semid */ return compat_sys_semtimedop((int)first, compat_ptr(ptr), second, compat_ptr(fifth)); /* else fall through for normal semop() */ case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ /* sign extend semid */ return sys_semtimedop((int)first, compat_ptr(ptr), second, NULL); case SEMGET: /* sign extend key, nsems */ return sys_semget((int)first, (int)second, third); case SEMCTL: /* sign extend semid, semnum */ return compat_sys_semctl((int)first, (int)second, third, compat_ptr(ptr)); case MSGSND: /* sign extend msqid */ return compat_sys_msgsnd((int)first, (int)second, third, compat_ptr(ptr)); case MSGRCV: /* sign extend msqid, msgtyp */ return compat_sys_msgrcv((int)first, second, (int)fifth, third, version, compat_ptr(ptr)); case MSGGET: /* sign extend key */ return sys_msgget((int)first, second); case MSGCTL: /* sign extend msqid */ return compat_sys_msgctl((int)first, second, compat_ptr(ptr)); case SHMAT: /* sign extend shmid */ return compat_sys_shmat((int)first, second, third, version, compat_ptr(ptr)); case SHMDT: return sys_shmdt(compat_ptr(ptr)); case SHMGET: /* sign extend key_t */ return sys_shmget((int)first, second, third); case SHMCTL: /* sign extend shmid */ return compat_sys_shmctl((int)first, second, compat_ptr(ptr)); default: return -ENOSYS; } return -ENOSYS; } #endif /* Note: it is necessary to treat out_fd and in_fd as unsigned ints, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count) { mm_segment_t old_fs = get_fs(); int ret; off_t of; off_t __user *up; if (offset && get_user(of, offset)) return -EFAULT; /* The __user pointer cast is valid because of the set_fs() */ set_fs(KERNEL_DS); up = offset ? (off_t __user *) &of : NULL; ret = sys_sendfile((int)out_fd, (int)in_fd, up, count); set_fs(old_fs); if (offset && put_user(of, offset)) return -EFAULT; return ret; } asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count) { mm_segment_t old_fs = get_fs(); int ret; loff_t lof; loff_t __user *up; if (offset && get_user(lof, offset)) return -EFAULT; /* The __user pointer cast is valid because of the set_fs() */ set_fs(KERNEL_DS); up = offset ? (loff_t __user *) &lof : NULL; ret = sys_sendfile64(out_fd, in_fd, up, count); set_fs(old_fs); if (offset && put_user(lof, offset)) return -EFAULT; return ret; } long sys32_execve(unsigned long a0, unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4, unsigned long a5, struct pt_regs *regs) { int error; char * filename; filename = getname((char __user *) a0); error = PTR_ERR(filename); if (IS_ERR(filename)) goto out; flush_fp_to_thread(current); flush_altivec_to_thread(current); error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs); if (error == 0) { task_lock(current); current->ptrace &= ~PT_DTRACE; task_unlock(current); } putname(filename); out: return error; } /* Set up a thread for executing a new program. */ void start_thread32(struct pt_regs* regs, unsigned long nip, unsigned long sp) { set_fs(USER_DS); /* * If we exec out of a kernel thread then thread.regs will not be * set. Do it now. */ if (!current->thread.regs) { unsigned long childregs = (unsigned long)current->thread_info + THREAD_SIZE; childregs -= sizeof(struct pt_regs); current->thread.regs = (struct pt_regs *)childregs; } /* * ELF_PLAT_INIT already clears all registers but it also sets r2. * So just clear r2 here. */ regs->gpr[2] = 0; regs->nip = nip; regs->gpr[1] = sp; regs->msr = MSR_USER32; #ifndef CONFIG_SMP if (last_task_used_math == current) last_task_used_math = 0; #endif /* CONFIG_SMP */ current->thread.fpscr = 0; memset(current->thread.fpr, 0, sizeof(current->thread.fpr)); #ifdef CONFIG_ALTIVEC #ifndef CONFIG_SMP if (last_task_used_altivec == current) last_task_used_altivec = 0; #endif /* CONFIG_SMP */ memset(current->thread.vr, 0, sizeof(current->thread.vr)); current->thread.vscr.u[0] = 0; current->thread.vscr.u[1] = 0; current->thread.vscr.u[2] = 0; current->thread.vscr.u[3] = 0x00010000; /* Java mode disabled */ current->thread.vrsave = 0; current->thread.used_vr = 0; #endif /* CONFIG_ALTIVEC */ } /* Note: it is necessary to treat option as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5) { return sys_prctl((int)option, (unsigned long) arg2, (unsigned long) arg3, (unsigned long) arg4, (unsigned long) arg5); } /* Note: it is necessary to treat pid as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval) { struct timespec t; int ret; mm_segment_t old_fs = get_fs (); /* The __user pointer cast is valid because of the set_fs() */ set_fs (KERNEL_DS); ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t); set_fs (old_fs); if (put_compat_timespec(&t, interval)) return -EFAULT; return ret; } asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf) { return sys_pciconfig_read((unsigned long) bus, (unsigned long) dfn, (unsigned long) off, (unsigned long) len, compat_ptr(ubuf)); } asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf) { return sys_pciconfig_write((unsigned long) bus, (unsigned long) dfn, (unsigned long) off, (unsigned long) len, compat_ptr(ubuf)); } asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn) { return sys_pciconfig_iobase(which, in_bus, in_devfn); } /* Note: it is necessary to treat mode as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_access(const char __user * filename, u32 mode) { return sys_access(filename, (int)mode); } /* Note: it is necessary to treat mode as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_creat(const char __user * pathname, u32 mode) { return sys_creat(pathname, (int)mode); } /* Note: it is necessary to treat pid and options as unsigned ints, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options) { return sys_waitpid((int)pid, stat_addr, (int)options); } /* Note: it is necessary to treat gidsetsize as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_getgroups(u32 gidsetsize, gid_t __user *grouplist) { return sys_getgroups((int)gidsetsize, grouplist); } /* Note: it is necessary to treat pid as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_getpgid(u32 pid) { return sys_getpgid((int)pid); } /* Note: it is necessary to treat pid as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_getsid(u32 pid) { return sys_getsid((int)pid); } /* Note: it is necessary to treat pid and sig as unsigned ints, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_kill(u32 pid, u32 sig) { return sys_kill((int)pid, (int)sig); } /* Note: it is necessary to treat mode as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_mkdir(const char __user * pathname, u32 mode) { return sys_mkdir(pathname, (int)mode); } long sys32_nice(u32 increment) { /* sign extend increment */ return sys_nice((int)increment); } off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin) { /* sign extend n */ return sys_lseek(fd, (int)offset, origin); } /* Note: it is necessary to treat bufsiz as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_readlink(const char __user * path, char __user * buf, u32 bufsiz) { return sys_readlink(path, buf, (int)bufsiz); } /* Note: it is necessary to treat option as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_get_priority_max(u32 policy) { return sys_sched_get_priority_max((int)policy); } /* Note: it is necessary to treat policy as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_get_priority_min(u32 policy) { return sys_sched_get_priority_min((int)policy); } /* Note: it is necessary to treat pid as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_getparam(u32 pid, struct sched_param __user *param) { return sys_sched_getparam((int)pid, param); } /* Note: it is necessary to treat pid as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_getscheduler(u32 pid) { return sys_sched_getscheduler((int)pid); } /* Note: it is necessary to treat pid as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param __user *param) { return sys_sched_setparam((int)pid, param); } /* Note: it is necessary to treat pid and policy as unsigned ints, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param) { return sys_sched_setscheduler((int)pid, (int)policy, param); } /* Note: it is necessary to treat len as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_setdomainname(char __user *name, u32 len) { return sys_setdomainname(name, (int)len); } /* Note: it is necessary to treat gidsetsize as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_setgroups(u32 gidsetsize, gid_t __user *grouplist) { return sys_setgroups((int)gidsetsize, grouplist); } asmlinkage long sys32_sethostname(char __user *name, u32 len) { /* sign extend len */ return sys_sethostname(name, (int)len); } /* Note: it is necessary to treat pid and pgid as unsigned ints, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_setpgid(u32 pid, u32 pgid) { return sys_setpgid((int)pid, (int)pgid); } long sys32_getpriority(u32 which, u32 who) { /* sign extend which and who */ return sys_getpriority((int)which, (int)who); } long sys32_setpriority(u32 which, u32 who, u32 niceval) { /* sign extend which, who and niceval */ return sys_setpriority((int)which, (int)who, (int)niceval); } long sys32_ioprio_get(u32 which, u32 who) { /* sign extend which and who */ return sys_ioprio_get((int)which, (int)who); } long sys32_ioprio_set(u32 which, u32 who, u32 ioprio) { /* sign extend which, who and ioprio */ return sys_ioprio_set((int)which, (int)who, (int)ioprio); } /* Note: it is necessary to treat newmask as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_ssetmask(u32 newmask) { return sys_ssetmask((int) newmask); } asmlinkage long sys32_syslog(u32 type, char __user * buf, u32 len) { /* sign extend len */ return sys_syslog(type, buf, (int)len); } /* Note: it is necessary to treat mask as an unsigned int, * with the corresponding cast to a signed int to insure that the * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) * and the register representation of a signed int (msr in 64-bit mode) is performed. */ asmlinkage long sys32_umask(u32 mask) { return sys_umask((int)mask); } #ifdef CONFIG_SYSCTL struct __sysctl_args32 { u32 name; int nlen; u32 oldval; u32 oldlenp; u32 newval; u32 newlen; u32 __unused[4]; }; asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) { struct __sysctl_args32 tmp; int error; size_t oldlen; size_t __user *oldlenp = NULL; unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; if (copy_from_user(&tmp, args, sizeof(tmp))) return -EFAULT; if (tmp.oldval && tmp.oldlenp) { /* Duh, this is ugly and might not work if sysctl_args is in read-only memory, but do_sysctl does indirectly a lot of uaccess in both directions and we'd have to basically copy the whole sysctl.c here, and glibc's __sysctl uses rw memory for the structure anyway. */ oldlenp = (size_t __user *)addr; if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) || put_user(oldlen, oldlenp)) return -EFAULT; } lock_kernel(); error = do_sysctl(compat_ptr(tmp.name), tmp.nlen, compat_ptr(tmp.oldval), oldlenp, compat_ptr(tmp.newval), tmp.newlen); unlock_kernel(); if (oldlenp) { if (!error) { if (get_user(oldlen, oldlenp) || put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp))) error = -EFAULT; } copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); } return error; } #endif asmlinkage int sys32_uname(struct old_utsname __user * name) { int err = 0; down_read(&uts_sem); if (copy_to_user(name, &system_utsname, sizeof(*name))) err = -EFAULT; up_read(&uts_sem); if (!err && personality(current->personality) == PER_LINUX32) { /* change "ppc64" to "ppc" */ if (__put_user(0, name->machine + 3) || __put_user(0, name->machine + 4)) err = -EFAULT; } return err; } asmlinkage int sys32_olduname(struct oldold_utsname __user * name) { int error; if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname))) return -EFAULT; down_read(&uts_sem); error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN); error |= __put_user(0,name->sysname+__OLD_UTS_LEN); error |= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN); error |= __put_user(0,name->nodename+__OLD_UTS_LEN); error |= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN); error |= __put_user(0,name->release+__OLD_UTS_LEN); error |= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN); error |= __put_user(0,name->version+__OLD_UTS_LEN); error |= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN); error |= __put_user(0,name->machine+__OLD_UTS_LEN); if (personality(current->personality) == PER_LINUX32) { /* change "ppc64" to "ppc" */ error |= __put_user(0, name->machine + 3); error |= __put_user(0, name->machine + 4); } up_read(&uts_sem); error = error ? -EFAULT : 0; return error; } unsigned long sys32_mmap2(unsigned long addr, size_t len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff) { /* This should remain 12 even if PAGE_SIZE changes */ return sys_mmap(addr, len, prot, flags, fd, pgoff << 12); } int get_compat_timeval(struct timeval *tv, struct compat_timeval __user *ctv) { return (!access_ok(VERIFY_READ, ctv, sizeof(*ctv)) || __get_user(tv->tv_sec, &ctv->tv_sec) || __get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0; } asmlinkage long sys32_utimes(char __user *filename, struct compat_timeval __user *tvs) { struct timeval ktvs[2], *ptr; ptr = NULL; if (tvs) { if (get_compat_timeval(&ktvs[0], &tvs[0]) || get_compat_timeval(&ktvs[1], &tvs[1])) return -EFAULT; ptr = ktvs; } return do_utimes(filename, ptr); } long sys32_tgkill(u32 tgid, u32 pid, int sig) { /* sign extend tgid, pid */ return sys_tgkill((int)tgid, (int)pid, sig); } /* * long long munging: * The 32 bit ABI passes long longs in an odd even register pair. */ compat_ssize_t sys32_pread64(unsigned int fd, char __user *ubuf, compat_size_t count, u32 reg6, u32 poshi, u32 poslo) { return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); } compat_ssize_t sys32_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count, u32 reg6, u32 poshi, u32 poslo) { return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); } compat_ssize_t sys32_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count) { return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count); } asmlinkage int sys32_truncate64(const char __user * path, u32 reg4, unsigned long high, unsigned long low) { return sys_truncate(path, (high << 32) | low); } asmlinkage int sys32_ftruncate64(unsigned int fd, u32 reg4, unsigned long high, unsigned long low) { return sys_ftruncate(fd, (high << 32) | low); } long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf, size_t len) { return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low, buf, len); } long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low, size_t len, int advice) { return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len, advice); } long ppc32_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low, u32 len_high, u32 len_low) { return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, (u64)len_high << 32 | len_low, advice); } long ppc32_timer_create(clockid_t clock, struct compat_sigevent __user *ev32, timer_t __user *timer_id) { sigevent_t event; timer_t t; long err; mm_segment_t savefs; if (ev32 == NULL) return sys_timer_create(clock, NULL, timer_id); if (get_compat_sigevent(&event, ev32)) return -EFAULT; if (!access_ok(VERIFY_WRITE, timer_id, sizeof(timer_t))) return -EFAULT; savefs = get_fs(); set_fs(KERNEL_DS); /* The __user pointer casts are valid due to the set_fs() */ err = sys_timer_create(clock, (sigevent_t __user *) &event, (timer_t __user *) &t); set_fs(savefs); if (err == 0) err = __put_user(t, timer_id); return err; } asmlinkage long sys32_add_key(const char __user *_type, const char __user *_description, const void __user *_payload, u32 plen, u32 ringid) { return sys_add_key(_type, _description, _payload, plen, ringid); } asmlinkage long sys32_request_key(const char __user *_type, const char __user *_description, const char __user *_callout_info, u32 destringid) { return sys_request_key(_type, _description, _callout_info, destringid); }