diff options
Diffstat (limited to 'arch/sparc/kernel/sys_sparc32.c')
| -rw-r--r-- | arch/sparc/kernel/sys_sparc32.c | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c new file mode 100644 index 000000000000..e800503879e4 --- /dev/null +++ b/arch/sparc/kernel/sys_sparc32.c @@ -0,0 +1,682 @@ +/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. + * + * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net) + * + * These routines maintain argument size conversion between 32bit and 64bit + * environment. + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/capability.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/smp.h> +#include <linux/smp_lock.h> +#include <linux/sem.h> +#include <linux/msg.h> +#include <linux/shm.h> +#include <linux/slab.h> +#include <linux/uio.h> +#include <linux/nfs_fs.h> +#include <linux/quota.h> +#include <linux/module.h> +#include <linux/sunrpc/svc.h> +#include <linux/nfsd/nfsd.h> +#include <linux/nfsd/cache.h> +#include <linux/nfsd/xdr.h> +#include <linux/nfsd/syscall.h> +#include <linux/poll.h> +#include <linux/personality.h> +#include <linux/stat.h> +#include <linux/filter.h> +#include <linux/highmem.h> +#include <linux/highuid.h> +#include <linux/mman.h> +#include <linux/ipv6.h> +#include <linux/in.h> +#include <linux/icmpv6.h> +#include <linux/syscalls.h> +#include <linux/sysctl.h> +#include <linux/binfmts.h> +#include <linux/dnotify.h> +#include <linux/security.h> +#include <linux/compat.h> +#include <linux/vfs.h> +#include <linux/netfilter_ipv4/ip_tables.h> +#include <linux/ptrace.h> + +#include <asm/types.h> +#include <asm/uaccess.h> +#include <asm/fpumacro.h> +#include <asm/mmu_context.h> +#include <asm/compat_signal.h> + +#ifdef CONFIG_SYSVIPC +asmlinkage long compat_sys_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 + +asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low) +{ + if ((int)high < 0) + return -EINVAL; + else + return sys_truncate(path, (high << 32) | low); +} + +asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) +{ + if ((int)high < 0) + return -EINVAL; + else + return sys_ftruncate(fd, (high << 32) | low); +} + +static int cp_compat_stat64(struct kstat *stat, + struct compat_stat64 __user *statbuf) +{ + int err; + + err = put_user(huge_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(huge_encode_dev(stat->rdev), &statbuf->st_rdev); + err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); + err |= put_user(stat->size, &statbuf->st_size); + err |= put_user(stat->blksize, &statbuf->st_blksize); + err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); + err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); + err |= put_user(stat->blocks, &statbuf->st_blocks); + 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(0, &statbuf->__unused4); + err |= put_user(0, &statbuf->__unused5); + + return err; +} + +asmlinkage long compat_sys_stat64(char __user * filename, + struct compat_stat64 __user *statbuf) +{ + struct kstat stat; + int error = vfs_stat(filename, &stat); + + if (!error) + error = cp_compat_stat64(&stat, statbuf); + return error; +} + +asmlinkage long compat_sys_lstat64(char __user * filename, + struct compat_stat64 __user *statbuf) +{ + struct kstat stat; + int error = vfs_lstat(filename, &stat); + + if (!error) + error = cp_compat_stat64(&stat, statbuf); + return error; +} + +asmlinkage long compat_sys_fstat64(unsigned int fd, + struct compat_stat64 __user * statbuf) +{ + struct kstat stat; + int error = vfs_fstat(fd, &stat); + + if (!error) + error = cp_compat_stat64(&stat, statbuf); + return error; +} + +asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename, + struct compat_stat64 __user * statbuf, int flag) +{ + struct kstat stat; + int error = -EINVAL; + + if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) + goto out; + + if (flag & AT_SYMLINK_NOFOLLOW) + error = vfs_lstat_fd(dfd, filename, &stat); + else + error = vfs_stat_fd(dfd, filename, &stat); + + if (!error) + error = cp_compat_stat64(&stat, statbuf); + +out: + return error; +} + +asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) +{ + return sys_sysfs(option, arg1, arg2); +} + +asmlinkage long compat_sys_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_compat_timespec(&t, interval)) + return -EFAULT; + return ret; +} + +asmlinkage long compat_sys_rt_sigprocmask(int how, + compat_sigset_t __user *set, + compat_sigset_t __user *oset, + compat_size_t sigsetsize) +{ + sigset_t s; + compat_sigset_t s32; + int ret; + mm_segment_t old_fs = get_fs(); + + if (set) { + if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) + return -EFAULT; + switch (_NSIG_WORDS) { + case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); + case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); + case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); + case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); + } + } + set_fs (KERNEL_DS); + ret = sys_rt_sigprocmask(how, + set ? (sigset_t __user *) &s : NULL, + oset ? (sigset_t __user *) &s : NULL, + sigsetsize); + set_fs (old_fs); + if (ret) return ret; + if (oset) { + switch (_NSIG_WORDS) { + case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; + case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; + case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; + case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; + } + if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) + return -EFAULT; + } + return 0; +} + +asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, + compat_size_t sigsetsize) +{ + sigset_t s; + compat_sigset_t s32; + int ret; + mm_segment_t old_fs = get_fs(); + + set_fs (KERNEL_DS); + ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize); + set_fs (old_fs); + if (!ret) { + switch (_NSIG_WORDS) { + case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; + case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; + case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; + case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; + } + if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) + return -EFAULT; + } + return ret; +} + +asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig, + struct compat_siginfo __user *uinfo) +{ + siginfo_t info; + int ret; + mm_segment_t old_fs = get_fs(); + + if (copy_siginfo_from_user32(&info, uinfo)) + return -EFAULT; + + set_fs (KERNEL_DS); + ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info); + set_fs (old_fs); + return ret; +} + +asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act, + struct old_sigaction32 __user *oact) +{ + struct k_sigaction new_ka, old_ka; + int ret; + + WARN_ON_ONCE(sig >= 0); + sig = -sig; + + if (act) { + compat_old_sigset_t mask; + u32 u_handler, u_restorer; + + ret = get_user(u_handler, &act->sa_handler); + new_ka.sa.sa_handler = compat_ptr(u_handler); + ret |= __get_user(u_restorer, &act->sa_restorer); + new_ka.sa.sa_restorer = compat_ptr(u_restorer); + ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); + ret |= __get_user(mask, &act->sa_mask); + if (ret) + return ret; + new_ka.ka_restorer = NULL; + siginitset(&new_ka.sa.sa_mask, mask); + } + + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); + ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); + ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); + ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); + } + + return ret; +} + +asmlinkage long compat_sys_rt_sigaction(int sig, + struct sigaction32 __user *act, + struct sigaction32 __user *oact, + void __user *restorer, + compat_size_t sigsetsize) +{ + struct k_sigaction new_ka, old_ka; + int ret; + compat_sigset_t set32; + + /* XXX: Don't preclude handling different sized sigset_t's. */ + if (sigsetsize != sizeof(compat_sigset_t)) + return -EINVAL; + + if (act) { + u32 u_handler, u_restorer; + + new_ka.ka_restorer = restorer; + ret = get_user(u_handler, &act->sa_handler); + new_ka.sa.sa_handler = compat_ptr(u_handler); + ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); + switch (_NSIG_WORDS) { + case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); + case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); + case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); + case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); + } + ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); + ret |= __get_user(u_restorer, &act->sa_restorer); + new_ka.sa.sa_restorer = compat_ptr(u_restorer); + if (ret) + return -EFAULT; + } + + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + switch (_NSIG_WORDS) { + case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; + case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; + case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; + case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; + } + ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); + ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); + ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); + ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); + if (ret) + ret = -EFAULT; + } + + return ret; +} + +/* + * sparc32_execve() executes a new program after the asm stub has set + * things up for us. This should basically do what I want it to. + */ +asmlinkage long sparc32_execve(struct pt_regs *regs) +{ + int error, base = 0; + char *filename; + + /* User register window flush is done by entry.S */ + + /* Check for indirect call. */ + if ((u32)regs->u_regs[UREG_G1] == 0) + base = 1; + + filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + goto out; + + error = compat_do_execve(filename, + compat_ptr(regs->u_regs[base + UREG_I1]), + compat_ptr(regs->u_regs[base + UREG_I2]), regs); + + putname(filename); + + if (!error) { + fprs_write(0); + current_thread_info()->xfsr[0] = 0; + current_thread_info()->fpsaved[0] = 0; + regs->tstate &= ~TSTATE_PEF; + } +out: + return error; +} + +#ifdef CONFIG_MODULES + +asmlinkage long sys32_init_module(void __user *umod, u32 len, + const char __user *uargs) +{ + return sys_init_module(umod, len, uargs); +} + +asmlinkage long sys32_delete_module(const char __user *name_user, + unsigned int flags) +{ + return sys_delete_module(name_user, flags); +} + +#else /* CONFIG_MODULES */ + +asmlinkage long sys32_init_module(const char __user *name_user, + struct module __user *mod_user) +{ + return -ENOSYS; +} + +asmlinkage long sys32_delete_module(const char __user *name_user) +{ + return -ENOSYS; +} + +#endif /* CONFIG_MODULES */ + +asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, + char __user *ubuf, + compat_size_t count, + unsigned long poshi, + unsigned long poslo) +{ + return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); +} + +asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, + char __user *ubuf, + compat_size_t count, + unsigned long poshi, + unsigned long poslo) +{ + return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); +} + +asmlinkage long compat_sys_readahead(int fd, + unsigned long offhi, + unsigned long offlo, + compat_size_t count) +{ + return sys_readahead(fd, (offhi << 32) | offlo, count); +} + +long compat_sys_fadvise64(int fd, + unsigned long offhi, + unsigned long offlo, + compat_size_t len, int advice) +{ + return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); +} + +long compat_sys_fadvise64_64(int fd, + unsigned long offhi, unsigned long offlo, + unsigned long lenhi, unsigned long lenlo, + int advice) +{ + return sys_fadvise64_64(fd, + (offhi << 32) | offlo, + (lenhi << 32) | lenlo, + advice); +} + +asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, + compat_off_t __user *offset, + compat_size_t 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 long compat_sys_sendfile64(int out_fd, int in_fd, + compat_loff_t __user *offset, + compat_size_t count) +{ + mm_segment_t old_fs = get_fs(); + int ret; + loff_t lof; + + if (offset && get_user(lof, offset)) + return -EFAULT; + + set_fs(KERNEL_DS); + ret = sys_sendfile64(out_fd, in_fd, + offset ? (loff_t __user *) &lof : NULL, + count); + set_fs(old_fs); + + if (offset && put_user(lof, offset)) + return -EFAULT; + + return ret; +} + +/* This is just a version for 32-bit applications which does + * not force O_LARGEFILE on. + */ + +asmlinkage long sparc32_open(const char __user *filename, + int flags, int mode) +{ + return do_sys_open(AT_FDCWD, filename, flags, mode); +} + +extern unsigned long do_mremap(unsigned long addr, + unsigned long old_len, unsigned long new_len, + unsigned long flags, unsigned long new_addr); + +asmlinkage unsigned long sys32_mremap(unsigned long addr, + unsigned long old_len, unsigned long new_len, + unsigned long flags, u32 __new_addr) +{ + unsigned long ret = -EINVAL; + unsigned long new_addr = __new_addr; + + if (unlikely(sparc_mmap_check(addr, old_len))) + goto out; + if (unlikely(sparc_mmap_check(new_addr, new_len))) + goto out; + down_write(¤t->mm->mmap_sem); + ret = do_mremap(addr, old_len, new_len, flags, new_addr); + up_write(¤t->mm->mmap_sem); +out: + return ret; +} + +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) +{ +#ifndef CONFIG_SYSCTL_SYSCALL + return -ENOSYS; +#else + struct __sysctl_args32 tmp; + int error; + size_t oldlen, __user *oldlenp = NULL; + unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; + + 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 *)(unsigned long)tmp.oldlenp) || + put_user(oldlen, (size_t __user *)addr)) + return -EFAULT; + oldlenp = (size_t __user *)addr; + } + + lock_kernel(); + error = do_sysctl((int __user *)(unsigned long) tmp.name, + tmp.nlen, + (void __user *)(unsigned long) tmp.oldval, + oldlenp, + (void __user *)(unsigned long) tmp.newval, + tmp.newlen); + unlock_kernel(); + if (oldlenp) { + if (!error) { + if (get_user(oldlen, (size_t __user *)addr) || + put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) + error = -EFAULT; + } + if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) + error = -EFAULT; + } + return error; +#endif +} + +long sys32_lookup_dcookie(unsigned long cookie_high, + unsigned long cookie_low, + char __user *buf, size_t len) +{ + return sys_lookup_dcookie((cookie_high << 32) | cookie_low, + buf, len); +} + +long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags) +{ + return sys_sync_file_range(fd, + (off_high << 32) | off_low, + (nb_high << 32) | nb_low, + flags); +} + +asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, + u32 lenhi, u32 lenlo) +{ + return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, + ((loff_t)lenhi << 32) | lenlo); +} |
