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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/tile/kernel/compat.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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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/tile/kernel/compat.c')
-rw-r--r-- | arch/tile/kernel/compat.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/tile/kernel/compat.c b/arch/tile/kernel/compat.c new file mode 100644 index 00000000..d67459b9 --- /dev/null +++ b/arch/tile/kernel/compat.c @@ -0,0 +1,118 @@ +/* + * Copyright 2010 Tilera Corporation. All Rights Reserved. + * + * 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, version 2. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +/* Adjust unistd.h to provide 32-bit numbers and functions. */ +#define __SYSCALL_COMPAT + +#include <linux/compat.h> +#include <linux/syscalls.h> +#include <linux/kdev_t.h> +#include <linux/fs.h> +#include <linux/fcntl.h> +#include <linux/uaccess.h> +#include <linux/signal.h> +#include <asm/syscalls.h> + +/* + * Syscalls that take 64-bit numbers traditionally take them in 32-bit + * "high" and "low" value parts on 32-bit architectures. + * In principle, one could imagine passing some register arguments as + * fully 64-bit on TILE-Gx in 32-bit mode, but it seems easier to + * adapt the usual convention. + */ + +long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high) +{ + return sys_truncate(filename, ((loff_t)high << 32) | low); +} + +long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high) +{ + return sys_ftruncate(fd, ((loff_t)high << 32) | low); +} + +long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count, + u32 dummy, u32 low, u32 high) +{ + return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low); +} + +long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count, + u32 dummy, u32 low, u32 high) +{ + return sys_pwrite64(fd, ubuf, count, ((loff_t)high << 32) | low); +} + +long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len) +{ + return sys_lookup_dcookie(((loff_t)high << 32) | low, buf, len); +} + +long compat_sys_sync_file_range2(int fd, unsigned int flags, + u32 offset_lo, u32 offset_hi, + u32 nbytes_lo, u32 nbytes_hi) +{ + return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo, + ((loff_t)nbytes_hi << 32) | nbytes_lo, + flags); +} + +long compat_sys_fallocate(int fd, int mode, + u32 offset_lo, u32 offset_hi, + u32 len_lo, u32 len_hi) +{ + return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo, + ((loff_t)len_hi << 32) | len_lo); +} + + + +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 __force __user *)&t); + set_fs(old_fs); + if (put_compat_timespec(&t, interval)) + return -EFAULT; + return ret; +} + +/* Provide the compat syscall number to call mapping. */ +#undef __SYSCALL +#define __SYSCALL(nr, call) [nr] = (call), + +/* See comments in sys.c */ +#define compat_sys_fadvise64_64 sys32_fadvise64_64 +#define compat_sys_readahead sys32_readahead + +/* Call the trampolines to manage pt_regs where necessary. */ +#define compat_sys_execve _compat_sys_execve +#define compat_sys_sigaltstack _compat_sys_sigaltstack +#define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn +#define sys_clone _sys_clone + +/* + * Note that we can't include <linux/unistd.h> here since the header + * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well. + */ +void *compat_sys_call_table[__NR_syscalls] = { + [0 ... __NR_syscalls-1] = sys_ni_syscall, +#include <asm/unistd.h> +}; |