diff options
author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
---|---|---|
committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/parisc/kernel/sys_parisc32.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/parisc/kernel/sys_parisc32.c')
-rw-r--r-- | arch/parisc/kernel/sys_parisc32.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c new file mode 100644 index 00000000..dc9a6246 --- /dev/null +++ b/arch/parisc/kernel/sys_parisc32.c @@ -0,0 +1,238 @@ +/* + * sys_parisc32.c: Conversion between 32bit and 64bit native syscalls. + * + * Copyright (C) 2000-2001 Hewlett Packard Company + * Copyright (C) 2000 John Marvin + * Copyright (C) 2001 Matthew Wilcox + * + * These routines maintain argument size conversion between 32bit and 64bit + * environment. Based heavily on sys_ia32.c and sys_sparc32.c. + */ + +#include <linux/compat.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/time.h> +#include <linux/smp.h> +#include <linux/sem.h> +#include <linux/msg.h> +#include <linux/shm.h> +#include <linux/slab.h> +#include <linux/uio.h> +#include <linux/ncp_fs.h> +#include <linux/poll.h> +#include <linux/personality.h> +#include <linux/stat.h> +#include <linux/highmem.h> +#include <linux/highuid.h> +#include <linux/mman.h> +#include <linux/binfmts.h> +#include <linux/namei.h> +#include <linux/vfs.h> +#include <linux/ptrace.h> +#include <linux/swap.h> +#include <linux/syscalls.h> + +#include <asm/types.h> +#include <asm/uaccess.h> +#include <asm/mmu_context.h> + +#include "sys32.h" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(x) printk x +#else +#define DBG(x) +#endif + +/* + * sys32_execve() executes a new program. + */ + +asmlinkage int sys32_execve(struct pt_regs *regs) +{ + int error; + char *filename; + + DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26])); + filename = getname((const char __user *) regs->gr[26]); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + goto out; + error = compat_do_execve(filename, compat_ptr(regs->gr[25]), + compat_ptr(regs->gr[24]), regs); + putname(filename); +out: + + return error; +} + +asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23, + int r22, int r21, int r20) +{ + printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n", + current->comm, current->pid, r20); + return -ENOSYS; +} + +asmlinkage long sys32_sched_rr_get_interval(pid_t pid, + struct compat_timespec __user *interval) +{ + struct timespec t; + int ret; + + KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t); + if (put_compat_timespec(&t, interval)) + return -EFAULT; + return ret; +} + +struct msgbuf32 { + int mtype; + char mtext[1]; +}; + +asmlinkage long sys32_msgsnd(int msqid, + struct msgbuf32 __user *umsgp32, + size_t msgsz, int msgflg) +{ + struct msgbuf *mb; + struct msgbuf32 mb32; + int err; + + if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL) + return -ENOMEM; + + err = get_user(mb32.mtype, &umsgp32->mtype); + mb->mtype = mb32.mtype; + err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz); + + if (err) + err = -EFAULT; + else + KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg); + + kfree(mb); + return err; +} + +asmlinkage long sys32_msgrcv(int msqid, + struct msgbuf32 __user *umsgp32, + size_t msgsz, long msgtyp, int msgflg) +{ + struct msgbuf *mb; + struct msgbuf32 mb32; + int err, len; + + if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL) + return -ENOMEM; + + KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg); + + if (err >= 0) { + len = err; + mb32.mtype = mb->mtype; + err = put_user(mb32.mtype, &umsgp32->mtype); + err |= copy_to_user(&umsgp32->mtext, mb->mtext, len); + if (err) + err = -EFAULT; + else + err = len; + } + + kfree(mb); + 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 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; + + 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; +} + + +/* lseek() needs a wrapper because 'offset' can be negative, but the top + * half of the argument has been zeroed by syscall.S. + */ + +asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin) +{ + return sys_lseek(fd, offset, origin); +} + +asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg) +{ + union semun u; + + if (cmd == SETVAL) { + /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes. + * The int should be in the first 4, but our argument + * frobbing has left it in the last 4. + */ + u.val = *((int *)&arg + 1); + return sys_semctl (semid, semnum, cmd, u); + } + return sys_semctl (semid, semnum, cmd, arg); +} + +long sys32_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); +} + +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 long compat_sys_fanotify_mark(int fan_fd, int flags, u32 mask_hi, + u32 mask_lo, int fd, + const char __user *pathname) +{ + return sys_fanotify_mark(fan_fd, flags, ((u64)mask_hi << 32) | mask_lo, + fd, pathname); +} |