/* * Conversion between 32-bit and 64-bit native system calls. * * Copyright (C) 2000 Silicon Graphics, Inc. * Written by Ulf Carlsson (ulfc@engr.sgi.com) * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com) */ #include <linux/compiler.h> #include <linux/mm.h> #include <linux/errno.h> #include <linux/file.h> #include <linux/smp_lock.h> #include <linux/highuid.h> #include <linux/dirent.h> #include <linux/resource.h> #include <linux/highmem.h> #include <linux/time.h> #include <linux/times.h> #include <linux/poll.h> #include <linux/slab.h> #include <linux/skbuff.h> #include <linux/filter.h> #include <linux/shm.h> #include <linux/sem.h> #include <linux/msg.h> #include <linux/icmpv6.h> #include <linux/syscalls.h> #include <linux/sysctl.h> #include <linux/utime.h> #include <linux/utsname.h> #include <linux/personality.h> #include <linux/dnotify.h> #include <linux/module.h> #include <linux/binfmts.h> #include <linux/security.h> #include <linux/compat.h> #include <linux/vfs.h> #include <net/sock.h> #include <net/scm.h> #include <asm/ipc.h> #include <asm/sim.h> #include <asm/uaccess.h> #include <asm/mmu_context.h> #include <asm/mman.h> /* Use this to get at 32-bit user passed pointers. */ /* A() macro should be used for places where you e.g. have some internal variable u32 and just want to get rid of a compiler warning. AA() has to be used in places where you want to convert a function argument to 32bit pointer or when you e.g. access pt_regs structure and want to consider 32bit registers only. */ #define A(__x) ((unsigned long)(__x)) #define AA(__x) ((unsigned long)((int)__x)) #ifdef __MIPSEB__ #define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) #endif #ifdef __MIPSEL__ #define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) #endif /* * Revalidate the inode. This is required for proper NFS attribute caching. */ int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) { struct compat_stat tmp; if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) return -EOVERFLOW; memset(&tmp, 0, sizeof(tmp)); tmp.st_dev = new_encode_dev(stat->dev); tmp.st_ino = stat->ino; if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino) return -EOVERFLOW; tmp.st_mode = stat->mode; tmp.st_nlink = stat->nlink; SET_UID(tmp.st_uid, stat->uid); SET_GID(tmp.st_gid, stat->gid); tmp.st_rdev = new_encode_dev(stat->rdev); tmp.st_size = stat->size; tmp.st_atime = stat->atime.tv_sec; tmp.st_mtime = stat->mtime.tv_sec; tmp.st_ctime = stat->ctime.tv_sec; #ifdef STAT_HAVE_NSEC tmp.st_atime_nsec = stat->atime.tv_nsec; tmp.st_mtime_nsec = stat->mtime.tv_nsec; tmp.st_ctime_nsec = stat->ctime.tv_nsec; #endif tmp.st_blocks = stat->blocks; tmp.st_blksize = stat->blksize; return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; } asmlinkage unsigned long sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff) { struct file * file = NULL; unsigned long error; error = -EINVAL; if (pgoff & (~PAGE_MASK >> 12)) goto out; pgoff >>= PAGE_SHIFT-12; if (!(flags & MAP_ANONYMOUS)) { error = -EBADF; file = fget(fd); if (!file) goto out; } flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); down_write(¤t->mm->mmap_sem); error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); up_write(¤t->mm->mmap_sem); if (file) fput(file); out: return error; } asmlinkage int sys_truncate64(const char __user *path, unsigned int high, unsigned int low) { if ((int)high < 0) return -EINVAL; return sys_truncate(path, ((long) high << 32) | low); } asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high, unsigned int low) { if ((int)high < 0) return -EINVAL; return sys_ftruncate(fd, ((long) high << 32) | low); } /* * sys_execve() executes a new program. */ asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) { int error; char * filename; filename = getname(compat_ptr(regs.regs[4])); error = PTR_ERR(filename); if (IS_ERR(filename)) goto out; error = compat_do_execve(filename, compat_ptr(regs.regs[5]), compat_ptr(regs.regs[6]), ®s); putname(filename); out: return error; } asmlinkage long sysn32_waitid(int which, compat_pid_t pid, siginfo_t __user *uinfo, int options, struct compat_rusage __user *uru) { struct rusage ru; long ret; mm_segment_t old_fs = get_fs(); int si_signo; if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo))) return -EFAULT; set_fs (KERNEL_DS); ret = sys_waitid(which, pid, uinfo, options, uru ? (struct rusage __user *) &ru : NULL); set_fs (old_fs); if (__get_user(si_signo, &uinfo->si_signo)) return -EFAULT; if (ret < 0 || si_signo == 0) return ret; if (uru) ret = put_compat_rusage(&ru, uru); return ret; } struct sysinfo32 { s32 uptime; u32 loads[3]; u32 totalram; u32 freeram; u32 sharedram; u32 bufferram; u32 totalswap; u32 freeswap; u16 procs; u32 totalhigh; u32 freehigh; u32 mem_unit; char _f[8]; }; asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info) { struct sysinfo s; int ret, err; mm_segment_t old_fs = get_fs (); set_fs (KERNEL_DS); ret = sys_sysinfo((struct sysinfo __user *)&s); set_fs (old_fs); 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; } #define RLIM_INFINITY32 0x7fffffff #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) struct rlimit32 { int rlim_cur; int rlim_max; }; #ifdef __MIPSEB__ asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, int length_hi, int length_lo) #endif #ifdef __MIPSEL__ asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, int length_lo, int length_hi) #endif { loff_t length; length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; return sys_truncate(path, length); } #ifdef __MIPSEB__ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, int length_hi, int length_lo) #endif #ifdef __MIPSEL__ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, int length_lo, int length_hi) #endif { loff_t length; length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; return sys_ftruncate(fd, length); } static inline long get_tv32(struct timeval *o, struct compat_timeval __user *i) { return (!access_ok(VERIFY_READ, i, sizeof(*i)) || (__get_user(o->tv_sec, &i->tv_sec) | __get_user(o->tv_usec, &i->tv_usec))); } 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))); } extern struct timezone sys_tz; asmlinkage int 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; } 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; } asmlinkage int 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); } asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, unsigned int offset_low, loff_t __user * result, unsigned int origin) { return sys_llseek(fd, offset_high, offset_low, result, origin); } /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + lseek back to original location. They fail just like lseek does on non-seekable files. */ asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf, size_t count, u32 unused, u64 a4, u64 a5) { return sys_pread64(fd, buf, count, merge_64(a4, a5)); } asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf, size_t count, u32 unused, u64 a4, u64 a5) { return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); } asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) { struct timespec t; int ret; mm_segment_t old_fs = get_fs (); set_fs (KERNEL_DS); ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); set_fs (old_fs); if (put_user (t.tv_sec, &interval->tv_sec) || __put_user (t.tv_nsec, &interval->tv_nsec)) return -EFAULT; return ret; } struct msgbuf32 { s32 mtype; char mtext[1]; }; struct ipc_perm32 { key_t key; __compat_uid_t uid; __compat_gid_t gid; __compat_uid_t cuid; __compat_gid_t cgid; compat_mode_t mode; unsigned short seq; }; struct ipc64_perm32 { key_t key; __compat_uid_t uid; __compat_gid_t gid; __compat_uid_t cuid; __compat_gid_t cgid; compat_mode_t mode; unsigned short seq; unsigned short __pad1; unsigned int __unused1; unsigned int __unused2; }; struct semid_ds32 { struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ compat_time_t sem_otime; /* last semop time */ compat_time_t sem_ctime; /* last change time */ u32 sem_base; /* ptr to first semaphore in array */ u32 sem_pending; /* pending operations to be processed */ u32 sem_pending_last; /* last pending operation */ u32 undo; /* undo requests on this array */ unsigned short sem_nsems; /* no. of semaphores in array */ }; struct semid64_ds32 { struct ipc64_perm32 sem_perm; compat_time_t sem_otime; compat_time_t sem_ctime; unsigned int sem_nsems; unsigned int __unused1; unsigned int __unused2; }; struct msqid_ds32 { struct ipc_perm32 msg_perm; u32 msg_first; u32 msg_last; compat_time_t msg_stime; compat_time_t msg_rtime; compat_time_t msg_ctime; u32 wwait; u32 rwait; unsigned short msg_cbytes; unsigned short msg_qnum; unsigned short msg_qbytes; compat_ipc_pid_t msg_lspid; compat_ipc_pid_t msg_lrpid; }; struct msqid64_ds32 { struct ipc64_perm32 msg_perm; compat_time_t msg_stime; unsigned int __unused1; compat_time_t msg_rtime; unsigned int __unused2; compat_time_t msg_ctime; unsigned int __unused3; unsigned int msg_cbytes; unsigned int msg_qnum; unsigned int msg_qbytes; compat_pid_t msg_lspid; compat_pid_t msg_lrpid; unsigned int __unused4; unsigned int __unused5; }; struct shmid_ds32 { struct ipc_perm32 shm_perm; int shm_segsz; compat_time_t shm_atime; compat_time_t shm_dtime; compat_time_t shm_ctime; compat_ipc_pid_t shm_cpid; compat_ipc_pid_t shm_lpid; unsigned short shm_nattch; }; struct shmid64_ds32 { struct ipc64_perm32 shm_perm; compat_size_t shm_segsz; compat_time_t shm_atime; compat_time_t shm_dtime; compat_time_t shm_ctime; compat_pid_t shm_cpid; compat_pid_t shm_lpid; unsigned int shm_nattch; unsigned int __unused1; unsigned int __unused2; }; struct ipc_kludge32 { u32 msgp; s32 msgtyp; }; static int do_sys32_semctl(int first, int second, int third, void __user *uptr) { union semun fourth; u32 pad; int err, err2; struct semid64_ds s; mm_segment_t old_fs; if (!uptr) return -EINVAL; err = -EFAULT; if (get_user (pad, (u32 __user *)uptr)) return err; if ((third & ~IPC_64) == SETVAL) fourth.val = (int)pad; else fourth.__pad = (void __user *)A(pad); switch (third & ~IPC_64) { case IPC_INFO: case IPC_RMID: case IPC_SET: case SEM_INFO: case GETVAL: case GETPID: case GETNCNT: case GETZCNT: case GETALL: case SETVAL: case SETALL: err = sys_semctl (first, second, third, fourth); break; case IPC_STAT: case SEM_STAT: fourth.__pad = (struct semid64_ds __user *)&s; old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_semctl(first, second, third | IPC_64, fourth); set_fs(old_fs); if (third & IPC_64) { struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad); if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { err = -EFAULT; break; } err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key); err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid); err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid); err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid); err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid); err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode); err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq); err2 |= __put_user(s.sem_otime, &usp64->sem_otime); err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime); err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems); } else { struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad); if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { err = -EFAULT; break; } err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key); err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid); err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid); err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid); err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid); err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode); err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq); err2 |= __put_user(s.sem_otime, &usp32->sem_otime); err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime); err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems); } if (err2) err = -EFAULT; break; default: err = - EINVAL; break; } return err; } static int do_sys32_msgsnd (int first, int second, int third, void __user *uptr) { struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr; struct msgbuf *p; mm_segment_t old_fs; int err; if (second < 0) return -EINVAL; p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER); if (!p) return -ENOMEM; err = get_user (p->mtype, &up->mtype); if (err) goto out; err |= __copy_from_user (p->mtext, &up->mtext, second); if (err) goto out; old_fs = get_fs (); set_fs (KERNEL_DS); err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third); set_fs (old_fs); out: kfree (p); return err; } static int do_sys32_msgrcv (int first, int second, int msgtyp, int third, int version, void __user *uptr) { struct msgbuf32 __user *up; struct msgbuf *p; mm_segment_t old_fs; int err; if (!version) { struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr; struct ipc_kludge32 ipck; err = -EINVAL; if (!uptr) goto out; err = -EFAULT; if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32))) goto out; uptr = (void __user *)AA(ipck.msgp); msgtyp = ipck.msgtyp; } if (second < 0) return -EINVAL; err = -ENOMEM; p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER); if (!p) goto out; old_fs = get_fs (); set_fs (KERNEL_DS); err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third); set_fs (old_fs); if (err < 0) goto free_then_out; up = (struct msgbuf32 __user *)uptr; if (put_user (p->mtype, &up->mtype) || __copy_to_user (&up->mtext, p->mtext, err)) err = -EFAULT; free_then_out: kfree (p); out: return err; } static int do_sys32_msgctl (int first, int second, void __user *uptr) { int err = -EINVAL, err2; struct msqid64_ds m; struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr; struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr; mm_segment_t old_fs; switch (second & ~IPC_64) { case IPC_INFO: case IPC_RMID: case MSG_INFO: err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr); break; case IPC_SET: if (second & IPC_64) { if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) { err = -EFAULT; break; } err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid); err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid); err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode); err |= __get_user(m.msg_qbytes, &up64->msg_qbytes); } else { if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) { err = -EFAULT; break; } err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid); err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid); err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode); err |= __get_user(m.msg_qbytes, &up32->msg_qbytes); } if (err) break; old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m); set_fs(old_fs); break; case IPC_STAT: case MSG_STAT: old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m); set_fs(old_fs); if (second & IPC_64) { if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { err = -EFAULT; break; } err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key); err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid); err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid); err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid); err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid); err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode); err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq); err2 |= __put_user(m.msg_stime, &up64->msg_stime); err2 |= __put_user(m.msg_rtime, &up64->msg_rtime); err2 |= __put_user(m.msg_ctime, &up64->msg_ctime); err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes); err2 |= __put_user(m.msg_qnum, &up64->msg_qnum); err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes); err2 |= __put_user(m.msg_lspid, &up64->msg_lspid); err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid); if (err2) err = -EFAULT; } else { if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { err = -EFAULT; break; } err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key); err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid); err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid); err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid); err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid); err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode); err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq); err2 |= __put_user(m.msg_stime, &up32->msg_stime); err2 |= __put_user(m.msg_rtime, &up32->msg_rtime); err2 |= __put_user(m.msg_ctime, &up32->msg_ctime); err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes); err2 |= __put_user(m.msg_qnum, &up32->msg_qnum); err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes); err2 |= __put_user(m.msg_lspid, &up32->msg_lspid); err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid); if (err2) err = -EFAULT; } break; } return err; } static int do_sys32_shmat (int first, int second, int third, int version, void __user *uptr) { unsigned long raddr; u32 __user *uaddr = (u32 __user *)A((u32)third); int err = -EINVAL; if (version == 1) return err; err = do_shmat (first, uptr, second, &raddr); if (err) return err; err = put_user (raddr, uaddr); return err; } struct shm_info32 { int used_ids; u32 shm_tot, shm_rss, shm_swp; u32 swap_attempts, swap_successes; }; static int do_sys32_shmctl (int first, int second, void __user *uptr) { struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr; struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr; struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr; int err = -EFAULT, err2; struct shmid64_ds s64; mm_segment_t old_fs; struct shm_info si; struct shmid_ds s; switch (second & ~IPC_64) { case IPC_INFO: second = IPC_INFO; /* So that we don't have to translate it */ case IPC_RMID: case SHM_LOCK: case SHM_UNLOCK: err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr); break; case IPC_SET: if (second & IPC_64) { err = get_user(s.shm_perm.uid, &up64->shm_perm.uid); err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid); err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode); } else { err = get_user(s.shm_perm.uid, &up32->shm_perm.uid); err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid); err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode); } if (err) break; old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s); set_fs(old_fs); break; case IPC_STAT: case SHM_STAT: old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_shmctl(first, second | IPC_64, (void __user *) &s64); set_fs(old_fs); if (err < 0) break; if (second & IPC_64) { if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { err = -EFAULT; break; } err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); err2 |= __put_user(s64.shm_atime, &up64->shm_atime); err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); } else { if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { err = -EFAULT; break; } err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); err2 |= __put_user(s64.shm_atime, &up32->shm_atime); err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); } if (err2) err = -EFAULT; break; case SHM_INFO: old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_shmctl(first, second, (void __user *)&si); set_fs(old_fs); if (err < 0) break; err2 = put_user(si.used_ids, &uip->used_ids); err2 |= __put_user(si.shm_tot, &uip->shm_tot); err2 |= __put_user(si.shm_rss, &uip->shm_rss); err2 |= __put_user(si.shm_swp, &uip->shm_swp); err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); err2 |= __put_user (si.swap_successes, &uip->swap_successes); if (err2) err = -EFAULT; break; default: err = -EINVAL; break; } return err; } static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems, const struct compat_timespec __user *timeout32) { struct compat_timespec t32; struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64)); if (copy_from_user(&t32, timeout32, sizeof(t32))) return -EFAULT; if (put_user(t32.tv_sec, &t64->tv_sec) || put_user(t32.tv_nsec, &t64->tv_nsec)) return -EFAULT; return sys_semtimedop(semid, tsems, nsems, t64); } asmlinkage long sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) { int version, err; version = call >> 16; /* hack for backward compatibility */ call &= 0xffff; switch (call) { case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second, NULL); break; case SEMTIMEDOP: err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second, (const struct compat_timespec __user *)AA(fifth)); break; case SEMGET: err = sys_semget (first, second, third); break; case SEMCTL: err = do_sys32_semctl (first, second, third, (void __user *)AA(ptr)); break; case MSGSND: err = do_sys32_msgsnd (first, second, third, (void __user *)AA(ptr)); break; case MSGRCV: err = do_sys32_msgrcv (first, second, fifth, third, version, (void __user *)AA(ptr)); break; case MSGGET: err = sys_msgget ((key_t) first, second); break; case MSGCTL: err = do_sys32_msgctl (first, second, (void __user *)AA(ptr)); break; case SHMAT: err = do_sys32_shmat (first, second, third, version, (void __user *)AA(ptr)); break; case SHMDT: err = sys_shmdt ((char __user *)A(ptr)); break; case SHMGET: err = sys_shmget (first, (unsigned)second, third); break; case SHMCTL: err = do_sys32_shmctl (first, second, (void __user *)AA(ptr)); break; default: err = -EINVAL; break; } return err; } asmlinkage long sys32_shmat(int shmid, char __user *shmaddr, int shmflg, int32_t __user *addr) { unsigned long raddr; int err; err = do_shmat(shmid, shmaddr, shmflg, &raddr); if (err) return err; return put_user(raddr, addr); } struct sysctl_args32 { compat_caddr_t name; int nlen; compat_caddr_t oldval; compat_caddr_t oldlenp; compat_caddr_t newval; compat_size_t newlen; unsigned int __unused[4]; }; #ifdef CONFIG_SYSCTL_SYSCALL 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. */ if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || put_user(oldlen, (size_t __user *)addr)) return -EFAULT; oldlenp = (size_t __user *)addr; } lock_kernel(); error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), oldlenp, (void __user *)A(tmp.newval), tmp.newlen); unlock_kernel(); if (oldlenp) { if (!error) { if (get_user(oldlen, (size_t __user *)addr) || put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) error = -EFAULT; } copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); } return error; } #endif /* CONFIG_SYSCTL_SYSCALL */ asmlinkage long sys32_newuname(struct new_utsname __user * name) { int ret = 0; down_read(&uts_sem); if (copy_to_user(name, utsname(), sizeof *name)) ret = -EFAULT; up_read(&uts_sem); if (current->personality == PER_LINUX32 && !ret) if (copy_to_user(name->machine, "mips\0\0\0", 8)) ret = -EFAULT; return ret; } asmlinkage int sys32_personality(unsigned long personality) { int ret; personality &= 0xffffffff; if (personality(current->personality) == PER_LINUX32 && personality == PER_LINUX) personality = PER_LINUX32; ret = sys_personality(personality); if (ret == PER_LINUX32) ret = PER_LINUX; return ret; } /* ustat compatibility */ struct ustat32 { compat_daddr_t f_tfree; compat_ino_t f_tinode; char f_fname[6]; char f_fpack[6]; }; extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf); asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32) { int err; struct ustat tmp; struct ustat32 tmp32; mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); err = sys_ustat(dev, (struct ustat __user *)&tmp); set_fs (old_fs); if (err) goto out; memset(&tmp32,0,sizeof(struct ustat32)); tmp32.f_tfree = tmp.f_tfree; tmp32.f_tinode = tmp.f_tinode; err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0; out: return err; } asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count) { mm_segment_t old_fs = get_fs(); int ret; off_t of; if (offset && get_user(of, offset)) return -EFAULT; set_fs(KERNEL_DS); ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count); set_fs(old_fs); if (offset && put_user(of, offset)) return -EFAULT; return ret; } asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, size_t count) { return sys_readahead(fd, merge_64(a2, a3), count); } asmlinkage long sys32_sync_file_range(int fd, int __pad, unsigned long a2, unsigned long a3, unsigned long a4, unsigned long a5, int flags) { return sys_sync_file_range(fd, merge_64(a2, a3), merge_64(a4, a5), flags); } /* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned int)) static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; #undef AL /* * System call vectors. * * Argument checking cleaned up. Saved 20% in size. * This function doesn't need to set the kernel lock because * it is set by the callees. */ asmlinkage long sys32_socketcall(int call, unsigned int __user *args32) { unsigned int a[6]; unsigned int a0,a1; int err; extern asmlinkage long sys_socket(int family, int type, int protocol); extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen); extern asmlinkage long sys_listen(int fd, int backlog); extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen); extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec); extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags); extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags, struct sockaddr __user *addr, int addr_len); extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags); extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags, struct sockaddr __user *addr, int __user *addr_len); extern asmlinkage long sys_shutdown(int fd, int how); extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen); extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen); extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags); extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags); if(call<1||call>SYS_RECVMSG) return -EINVAL; /* copy_from_user should be SMP safe. */ if (copy_from_user(a, args32, socketcall_nargs[call])) return -EFAULT; a0=a[0]; a1=a[1]; switch(call) { case SYS_SOCKET: err = sys_socket(a0,a1,a[2]); break; case SYS_BIND: err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]); break; case SYS_CONNECT: err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]); break; case SYS_LISTEN: err = sys_listen(a0,a1); break; case SYS_ACCEPT: err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); break; case SYS_GETSOCKNAME: err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); break; case SYS_GETPEERNAME: err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2])); break; case SYS_SOCKETPAIR: err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3])); break; case SYS_SEND: err = sys_send(a0, (void __user *)A(a1), a[2], a[3]); break; case SYS_SENDTO: err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3], (struct sockaddr __user *)A(a[4]), a[5]); break; case SYS_RECV: err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]); break; case SYS_RECVFROM: err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3], (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5])); break; case SYS_SHUTDOWN: err = sys_shutdown(a0,a1); break; case SYS_SETSOCKOPT: err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]); break; case SYS_GETSOCKOPT: err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4])); break; case SYS_SENDMSG: err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]); break; case SYS_RECVMSG: err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]); break; default: err = -EINVAL; break; } return err; } struct sigevent32 { u32 sigev_value; u32 sigev_signo; u32 sigev_notify; u32 payload[(64 / 4) - 3]; }; extern asmlinkage long sys_timer_create(clockid_t which_clock, struct sigevent __user *timer_event_spec, timer_t __user * created_timer_id); long sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id) { struct sigevent __user *p = NULL; if (se32) { struct sigevent se; p = compat_alloc_user_space(sizeof(struct sigevent)); memset(&se, 0, sizeof(struct sigevent)); if (get_user(se.sigev_value.sival_int, &se32->sigev_value) || __get_user(se.sigev_signo, &se32->sigev_signo) || __get_user(se.sigev_notify, &se32->sigev_notify) || __copy_from_user(&se._sigev_un._pad, &se32->payload, sizeof(se32->payload)) || copy_to_user(p, &se, sizeof(se))) return -EFAULT; } return sys_timer_create(clock, p, timer_id); } save_static_function(sys32_clone); __attribute_used__ noinline static int _sys32_clone(nabi_no_regargs struct pt_regs regs) { unsigned long clone_flags; unsigned long newsp; int __user *parent_tidptr, *child_tidptr; clone_flags = regs.regs[4]; newsp = regs.regs[5]; if (!newsp) newsp = regs.regs[29]; parent_tidptr = (int __user *) regs.regs[6]; /* Use __dummy4 instead of getting it off the stack, so that syscall() works. */ child_tidptr = (int __user *) __dummy4; return do_fork(clone_flags, newsp, ®s, 0, parent_tidptr, child_tidptr); }