diff options
Diffstat (limited to 'arch/powerpc/kernel/sys_ppc32.c')
| -rw-r--r-- | arch/powerpc/kernel/sys_ppc32.c | 626 |
1 files changed, 626 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c new file mode 100644 index 00000000..81c57063 --- /dev/null +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -0,0 +1,626 @@ +/* + * 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/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/smp.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 <linux/ipc.h> +#include <linux/slab.h> + +#include <asm/ptrace.h> +#include <asm/types.h> +#include <asm/uaccess.h> +#include <asm/unistd.h> +#include <asm/time.h> +#include <asm/mmu_context.h> +#include <asm/ppc-pci.h> +#include <asm/syscalls.h> +#include <asm/switch_to.h> + + +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)); +} + +/* 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 compat_sys_sysfs(u32 option, u32 arg1, u32 arg2) +{ + return sys_sysfs((int)option, arg1, arg2); +} + +#ifdef CONFIG_SYSVIPC +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 + +/* 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 compat_sys_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 compat_sys_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 compat_sys_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); + + putname(filename); + +out: + return error; +} + +/* 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 compat_sys_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 compat_sys_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; +} + +/* 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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_mkdir(const char __user * pathname, u32 mode) +{ + return sys_mkdir(pathname, (int)mode); +} + +long compat_sys_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); +} + +long compat_sys_truncate(const char __user * path, u32 length) +{ + /* sign extend length */ + return sys_truncate(path, (int)length); +} + +long compat_sys_ftruncate(int fd, u32 length) +{ + /* sign extend length */ + return sys_ftruncate(fd, (int)length); +} + +/* 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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_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 compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist) +{ + return sys_setgroups((int)gidsetsize, grouplist); +} + + +asmlinkage long compat_sys_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 compat_sys_setpgid(u32 pid, u32 pgid) +{ + return sys_setpgid((int)pid, (int)pgid); +} + +long compat_sys_getpriority(u32 which, u32 who) +{ + /* sign extend which and who */ + return sys_getpriority((int)which, (int)who); +} + +long compat_sys_setpriority(u32 which, u32 who, u32 niceval) +{ + /* sign extend which, who and niceval */ + return sys_setpriority((int)which, (int)who, (int)niceval); +} + +long compat_sys_ioprio_get(u32 which, u32 who) +{ + /* sign extend which and who */ + return sys_ioprio_get((int)which, (int)who); +} + +long compat_sys_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 compat_sys_ssetmask(u32 newmask) +{ + return sys_ssetmask((int) newmask); +} + +asmlinkage long compat_sys_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 compat_sys_umask(u32 mask) +{ + return sys_umask((int)mask); +} + +unsigned long compat_sys_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); +} + +long compat_sys_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 compat_sys_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 compat_sys_pwrite64(unsigned int fd, const 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 compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count) +{ + return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count); +} + +asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4, + unsigned long high, unsigned long low) +{ + return sys_truncate(path, (high << 32) | low); +} + +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); +} + +asmlinkage int compat_sys_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); +} + +asmlinkage long compat_sys_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 compat_sys_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); +} + +asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags, + unsigned offset_hi, unsigned offset_lo, + unsigned nbytes_hi, unsigned nbytes_lo) +{ + loff_t offset = ((loff_t)offset_hi << 32) | offset_lo; + loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo; + + return sys_sync_file_range(fd, offset, nbytes, flags); +} + +asmlinkage long compat_sys_fanotify_mark(int fanotify_fd, unsigned int flags, + unsigned mask_hi, unsigned mask_lo, + int dfd, const char __user *pathname) +{ + u64 mask = ((u64)mask_hi << 32) | mask_lo; + return sys_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname); +} |