fs.c
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上传日期:2013-02-24
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文件大小:20k
- /* $Id: fs.c,v 1.25 2001/09/19 00:04:30 davem Exp $
- * fs.c: fs related syscall emulation for Solaris
- *
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- *
- * 1999-08-19 Implemented solaris F_FREESP (truncate)
- * fcntl, by Jason Rappleye (rappleye@ccr.buffalo.edu)
- */
- #include <linux/types.h>
- #include <linux/sched.h>
- #include <linux/slab.h>
- #include <linux/fs.h>
- #include <linux/mm.h>
- #include <linux/file.h>
- #include <linux/stat.h>
- #include <linux/smp_lock.h>
- #include <linux/limits.h>
- #include <linux/resource.h>
- #include <linux/quotaops.h>
- #include <asm/uaccess.h>
- #include <asm/string.h>
- #include <asm/ptrace.h>
- #include "conv.h"
- #define R4_DEV(DEV) ((DEV & 0xff) | ((DEV & 0xff00) << 10))
- #define R4_MAJOR(DEV) (((DEV) >> 18) & 0x3fff)
- #define R4_MINOR(DEV) ((DEV) & 0x3ffff)
- #define R3_VERSION 1
- #define R4_VERSION 2
- typedef struct {
- s32 tv_sec;
- s32 tv_nsec;
- } timestruct_t;
- struct sol_stat {
- u32 st_dev;
- s32 st_pad1[3]; /* network id */
- u32 st_ino;
- u32 st_mode;
- u32 st_nlink;
- u32 st_uid;
- u32 st_gid;
- u32 st_rdev;
- s32 st_pad2[2];
- s32 st_size;
- s32 st_pad3; /* st_size, off_t expansion */
- timestruct_t st_atime;
- timestruct_t st_mtime;
- timestruct_t st_ctime;
- s32 st_blksize;
- s32 st_blocks;
- char st_fstype[16];
- s32 st_pad4[8]; /* expansion area */
- };
- struct sol_stat64 {
- u32 st_dev;
- s32 st_pad1[3]; /* network id */
- u64 st_ino;
- u32 st_mode;
- u32 st_nlink;
- u32 st_uid;
- u32 st_gid;
- u32 st_rdev;
- s32 st_pad2[2];
- s64 st_size;
- timestruct_t st_atime;
- timestruct_t st_mtime;
- timestruct_t st_ctime;
- s64 st_blksize;
- s32 st_blocks;
- char st_fstype[16];
- s32 st_pad4[4]; /* expansion area */
- };
- #define UFSMAGIC (((unsigned)'u'<<24)||((unsigned)'f'<<16)||((unsigned)'s'<<8))
- static inline int putstat(struct sol_stat *ubuf, struct stat *kbuf)
- {
- if (put_user (R4_DEV(kbuf->st_dev), &ubuf->st_dev) ||
- __put_user (kbuf->st_ino, &ubuf->st_ino) ||
- __put_user (kbuf->st_mode, &ubuf->st_mode) ||
- __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
- __put_user (kbuf->st_uid, &ubuf->st_uid) ||
- __put_user (kbuf->st_gid, &ubuf->st_gid) ||
- __put_user (R4_DEV(kbuf->st_rdev), &ubuf->st_rdev) ||
- __put_user (kbuf->st_size, &ubuf->st_size) ||
- __put_user (kbuf->st_atime, &ubuf->st_atime.tv_sec) ||
- __put_user (0, &ubuf->st_atime.tv_nsec) ||
- __put_user (kbuf->st_mtime, &ubuf->st_mtime.tv_sec) ||
- __put_user (0, &ubuf->st_mtime.tv_nsec) ||
- __put_user (kbuf->st_ctime, &ubuf->st_ctime.tv_sec) ||
- __put_user (0, &ubuf->st_ctime.tv_nsec) ||
- __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
- __put_user (kbuf->st_blocks, &ubuf->st_blocks) ||
- __put_user (UFSMAGIC, (unsigned *)ubuf->st_fstype))
- return -EFAULT;
- return 0;
- }
- static inline int putstat64(struct sol_stat64 *ubuf, struct stat *kbuf)
- {
- if (put_user (R4_DEV(kbuf->st_dev), &ubuf->st_dev) ||
- __put_user (kbuf->st_ino, &ubuf->st_ino) ||
- __put_user (kbuf->st_mode, &ubuf->st_mode) ||
- __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
- __put_user (kbuf->st_uid, &ubuf->st_uid) ||
- __put_user (kbuf->st_gid, &ubuf->st_gid) ||
- __put_user (R4_DEV(kbuf->st_rdev), &ubuf->st_rdev) ||
- __put_user (kbuf->st_size, &ubuf->st_size) ||
- __put_user (kbuf->st_atime, &ubuf->st_atime.tv_sec) ||
- __put_user (0, &ubuf->st_atime.tv_nsec) ||
- __put_user (kbuf->st_mtime, &ubuf->st_mtime.tv_sec) ||
- __put_user (0, &ubuf->st_mtime.tv_nsec) ||
- __put_user (kbuf->st_ctime, &ubuf->st_ctime.tv_sec) ||
- __put_user (0, &ubuf->st_ctime.tv_nsec) ||
- __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
- __put_user (kbuf->st_blocks, &ubuf->st_blocks) ||
- __put_user (UFSMAGIC, (unsigned *)ubuf->st_fstype))
- return -EFAULT;
- return 0;
- }
- asmlinkage int solaris_stat(u32 filename, u32 statbuf)
- {
- int ret;
- struct stat s;
- char *filenam;
- mm_segment_t old_fs = get_fs();
- int (*sys_newstat)(char *,struct stat *) =
- (int (*)(char *,struct stat *))SYS(stat);
-
- filenam = getname ((char *)A(filename));
- ret = PTR_ERR(filenam);
- if (!IS_ERR(filenam)) {
- set_fs (KERNEL_DS);
- ret = sys_newstat(filenam, &s);
- set_fs (old_fs);
- putname (filenam);
- if (putstat ((struct sol_stat *)A(statbuf), &s))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage int solaris_xstat(int vers, u32 filename, u32 statbuf)
- {
- /* Solaris doesn't bother with looking at vers, so we do neither */
- return solaris_stat(filename, statbuf);
- }
- asmlinkage int solaris_stat64(u32 filename, u32 statbuf)
- {
- int ret;
- struct stat s;
- char *filenam;
- mm_segment_t old_fs = get_fs();
- int (*sys_newstat)(char *,struct stat *) =
- (int (*)(char *,struct stat *))SYS(stat);
-
- filenam = getname ((char *)A(filename));
- ret = PTR_ERR(filenam);
- if (!IS_ERR(filenam)) {
- set_fs (KERNEL_DS);
- ret = sys_newstat(filenam, &s);
- set_fs (old_fs);
- putname (filenam);
- if (putstat64 ((struct sol_stat64 *)A(statbuf), &s))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage int solaris_lstat(u32 filename, u32 statbuf)
- {
- int ret;
- struct stat s;
- char *filenam;
- mm_segment_t old_fs = get_fs();
- int (*sys_newlstat)(char *,struct stat *) =
- (int (*)(char *,struct stat *))SYS(lstat);
-
- filenam = getname ((char *)A(filename));
- ret = PTR_ERR(filenam);
- if (!IS_ERR(filenam)) {
- set_fs (KERNEL_DS);
- ret = sys_newlstat(filenam, &s);
- set_fs (old_fs);
- putname (filenam);
- if (putstat ((struct sol_stat *)A(statbuf), &s))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage int solaris_lxstat(int vers, u32 filename, u32 statbuf)
- {
- return solaris_lstat(filename, statbuf);
- }
- asmlinkage int solaris_lstat64(u32 filename, u32 statbuf)
- {
- int ret;
- struct stat s;
- char *filenam;
- mm_segment_t old_fs = get_fs();
- int (*sys_newlstat)(char *,struct stat *) =
- (int (*)(char *,struct stat *))SYS(lstat);
-
- filenam = getname ((char *)A(filename));
- ret = PTR_ERR(filenam);
- if (!IS_ERR(filenam)) {
- set_fs (KERNEL_DS);
- ret = sys_newlstat(filenam, &s);
- set_fs (old_fs);
- putname (filenam);
- if (putstat64 ((struct sol_stat64 *)A(statbuf), &s))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage int solaris_fstat(unsigned int fd, u32 statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
- int (*sys_newfstat)(unsigned,struct stat *) =
- (int (*)(unsigned,struct stat *))SYS(fstat);
-
- set_fs (KERNEL_DS);
- ret = sys_newfstat(fd, &s);
- set_fs (old_fs);
- if (putstat ((struct sol_stat *)A(statbuf), &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage int solaris_fxstat(int vers, u32 fd, u32 statbuf)
- {
- return solaris_fstat(fd, statbuf);
- }
- asmlinkage int solaris_fstat64(unsigned int fd, u32 statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
- int (*sys_newfstat)(unsigned,struct stat *) =
- (int (*)(unsigned,struct stat *))SYS(fstat);
-
- set_fs (KERNEL_DS);
- ret = sys_newfstat(fd, &s);
- set_fs (old_fs);
- if (putstat64 ((struct sol_stat64 *)A(statbuf), &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage int solaris_mknod(u32 path, u32 mode, s32 dev)
- {
- int (*sys_mknod)(const char *,int,dev_t) =
- (int (*)(const char *,int,dev_t))SYS(mknod);
- int major, minor;
- if ((major = R4_MAJOR(dev)) > 255 ||
- (minor = R4_MINOR(dev)) > 255) return -EINVAL;
- return sys_mknod((const char *)A(path), mode, MKDEV(major,minor));
- }
- asmlinkage int solaris_xmknod(int vers, u32 path, u32 mode, s32 dev)
- {
- return solaris_mknod(path, mode, dev);
- }
- asmlinkage int solaris_getdents64(unsigned int fd, void *dirent, unsigned int count)
- {
- int (*sys_getdents)(unsigned int, void *, unsigned int) =
- (int (*)(unsigned int, void *, unsigned int))SYS(getdents);
-
- return sys_getdents(fd, dirent, count);
- }
- /* This statfs thingie probably will go in the near future, but... */
- struct sol_statfs {
- short f_type;
- s32 f_bsize;
- s32 f_frsize;
- s32 f_blocks;
- s32 f_bfree;
- u32 f_files;
- u32 f_ffree;
- char f_fname[6];
- char f_fpack[6];
- };
- asmlinkage int solaris_statfs(u32 path, u32 buf, int len, int fstype)
- {
- int ret;
- struct statfs s;
- mm_segment_t old_fs = get_fs();
- int (*sys_statfs)(const char *,struct statfs *) =
- (int (*)(const char *,struct statfs *))SYS(statfs);
- struct sol_statfs *ss = (struct sol_statfs *)A(buf);
-
- if (len != sizeof(struct sol_statfs)) return -EINVAL;
- if (!fstype) {
- set_fs (KERNEL_DS);
- ret = sys_statfs((const char *)A(path), &s);
- set_fs (old_fs);
- if (!ret) {
- if (put_user (s.f_type, &ss->f_type) ||
- __put_user (s.f_bsize, &ss->f_bsize) ||
- __put_user (0, &ss->f_frsize) ||
- __put_user (s.f_blocks, &ss->f_blocks) ||
- __put_user (s.f_bfree, &ss->f_bfree) ||
- __put_user (s.f_files, &ss->f_files) ||
- __put_user (s.f_ffree, &ss->f_ffree) ||
- __clear_user (&ss->f_fname, 12))
- return -EFAULT;
- }
- return ret;
- }
- /* Linux can't stat unmounted filesystems so we
- * simply lie and claim 100MB of 1GB is free. Sorry.
- */
- if (put_user (fstype, &ss->f_type) ||
- __put_user (1024, &ss->f_bsize) ||
- __put_user (0, &ss->f_frsize) ||
- __put_user (1024*1024, &ss->f_blocks) ||
- __put_user (100*1024, &ss->f_bfree) ||
- __put_user (60000, &ss->f_files) ||
- __put_user (50000, &ss->f_ffree) ||
- __clear_user (&ss->f_fname, 12))
- return -EFAULT;
- return 0;
- }
- asmlinkage int solaris_fstatfs(u32 fd, u32 buf, int len, int fstype)
- {
- int ret;
- struct statfs s;
- mm_segment_t old_fs = get_fs();
- int (*sys_fstatfs)(unsigned,struct statfs *) =
- (int (*)(unsigned,struct statfs *))SYS(fstatfs);
- struct sol_statfs *ss = (struct sol_statfs *)A(buf);
-
- if (len != sizeof(struct sol_statfs)) return -EINVAL;
- if (!fstype) {
- set_fs (KERNEL_DS);
- ret = sys_fstatfs(fd, &s);
- set_fs (old_fs);
- if (!ret) {
- if (put_user (s.f_type, &ss->f_type) ||
- __put_user (s.f_bsize, &ss->f_bsize) ||
- __put_user (0, &ss->f_frsize) ||
- __put_user (s.f_blocks, &ss->f_blocks) ||
- __put_user (s.f_bfree, &ss->f_bfree) ||
- __put_user (s.f_files, &ss->f_files) ||
- __put_user (s.f_ffree, &ss->f_ffree) ||
- __clear_user (&ss->f_fname, 12))
- return -EFAULT;
- }
- return ret;
- }
- /* Otherwise fstatfs is the same as statfs */
- return solaris_statfs(0, buf, len, fstype);
- }
- struct sol_statvfs {
- u32 f_bsize;
- u32 f_frsize;
- u32 f_blocks;
- u32 f_bfree;
- u32 f_bavail;
- u32 f_files;
- u32 f_ffree;
- u32 f_favail;
- u32 f_fsid;
- char f_basetype[16];
- u32 f_flag;
- u32 f_namemax;
- char f_fstr[32];
- u32 f_filler[16];
- };
- struct sol_statvfs64 {
- u32 f_bsize;
- u32 f_frsize;
- u64 f_blocks;
- u64 f_bfree;
- u64 f_bavail;
- u64 f_files;
- u64 f_ffree;
- u64 f_favail;
- u32 f_fsid;
- char f_basetype[16];
- u32 f_flag;
- u32 f_namemax;
- char f_fstr[32];
- u32 f_filler[16];
- };
- static int report_statvfs(struct vfsmount *mnt, struct inode *inode, u32 buf)
- {
- struct statfs s;
- int error;
- struct sol_statvfs *ss = (struct sol_statvfs *)A(buf);
- error = vfs_statfs(mnt->mnt_sb, &s);
- if (!error) {
- const char *p = mnt->mnt_sb->s_type->name;
- int i = 0;
- int j = strlen (p);
-
- if (j > 15) j = 15;
- if (IS_RDONLY(inode)) i = 1;
- if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
- if (put_user (s.f_bsize, &ss->f_bsize) ||
- __put_user (0, &ss->f_frsize) ||
- __put_user (s.f_blocks, &ss->f_blocks) ||
- __put_user (s.f_bfree, &ss->f_bfree) ||
- __put_user (s.f_bavail, &ss->f_bavail) ||
- __put_user (s.f_files, &ss->f_files) ||
- __put_user (s.f_ffree, &ss->f_ffree) ||
- __put_user (s.f_ffree, &ss->f_favail) ||
- __put_user (R4_DEV(inode->i_sb->s_dev), &ss->f_fsid) ||
- __copy_to_user (ss->f_basetype,p,j) ||
- __put_user (0, (char *)&ss->f_basetype[j]) ||
- __put_user (s.f_namelen, &ss->f_namemax) ||
- __put_user (i, &ss->f_flag) ||
- __clear_user (&ss->f_fstr, 32))
- return -EFAULT;
- }
- return error;
- }
- static int report_statvfs64(struct vfsmount *mnt, struct inode *inode, u32 buf)
- {
- struct statfs s;
- int error;
- struct sol_statvfs64 *ss = (struct sol_statvfs64 *)A(buf);
-
- error = vfs_statfs(mnt->mnt_sb, &s);
- if (!error) {
- const char *p = mnt->mnt_sb->s_type->name;
- int i = 0;
- int j = strlen (p);
-
- if (j > 15) j = 15;
- if (IS_RDONLY(inode)) i = 1;
- if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
- if (put_user (s.f_bsize, &ss->f_bsize) ||
- __put_user (0, &ss->f_frsize) ||
- __put_user (s.f_blocks, &ss->f_blocks) ||
- __put_user (s.f_bfree, &ss->f_bfree) ||
- __put_user (s.f_bavail, &ss->f_bavail) ||
- __put_user (s.f_files, &ss->f_files) ||
- __put_user (s.f_ffree, &ss->f_ffree) ||
- __put_user (s.f_ffree, &ss->f_favail) ||
- __put_user (R4_DEV(inode->i_sb->s_dev), &ss->f_fsid) ||
- __copy_to_user (ss->f_basetype,p,j) ||
- __put_user (0, (char *)&ss->f_basetype[j]) ||
- __put_user (s.f_namelen, &ss->f_namemax) ||
- __put_user (i, &ss->f_flag) ||
- __clear_user (&ss->f_fstr, 32))
- return -EFAULT;
- }
- return error;
- }
- asmlinkage int solaris_statvfs(u32 path, u32 buf)
- {
- struct nameidata nd;
- int error;
- error = user_path_walk((const char *)A(path),&nd);
- if (!error) {
- struct inode * inode = nd.dentry->d_inode;
- error = report_statvfs(nd.mnt, inode, buf);
- path_release(&nd);
- }
- return error;
- }
- asmlinkage int solaris_fstatvfs(unsigned int fd, u32 buf)
- {
- struct file * file;
- int error;
- error = -EBADF;
- file = fget(fd);
- if (file) {
- error = report_statvfs(file->f_vfsmnt, file->f_dentry->d_inode, buf);
- fput(file);
- }
- return error;
- }
- asmlinkage int solaris_statvfs64(u32 path, u32 buf)
- {
- struct nameidata nd;
- int error;
- lock_kernel();
- error = user_path_walk((const char *)A(path), &nd);
- if (!error) {
- struct inode * inode = nd.dentry->d_inode;
- error = report_statvfs64(nd.mnt, inode, buf);
- path_release(&nd);
- }
- unlock_kernel();
- return error;
- }
- asmlinkage int solaris_fstatvfs64(unsigned int fd, u32 buf)
- {
- struct file * file;
- int error;
- error = -EBADF;
- file = fget(fd);
- if (file) {
- lock_kernel();
- error = report_statvfs64(file->f_vfsmnt, file->f_dentry->d_inode, buf);
- unlock_kernel();
- fput(file);
- }
- return error;
- }
- extern asmlinkage long sparc32_open(const char * filename, int flags, int mode);
- asmlinkage int solaris_open(u32 fname, int flags, u32 mode)
- {
- const char *filename = (const char *)(long)fname;
- int fl = flags & 0xf;
- /* Translate flags first. */
- if (flags & 0x2000) fl |= O_LARGEFILE;
- if (flags & 0x8050) fl |= O_SYNC;
- if (flags & 0x80) fl |= O_NONBLOCK;
- if (flags & 0x100) fl |= O_CREAT;
- if (flags & 0x200) fl |= O_TRUNC;
- if (flags & 0x400) fl |= O_EXCL;
- if (flags & 0x800) fl |= O_NOCTTY;
- flags = fl;
- return sparc32_open(filename, flags, mode);
- }
- #define SOL_F_SETLK 6
- #define SOL_F_SETLKW 7
- #define SOL_F_FREESP 11
- #define SOL_F_ISSTREAM 13
- #define SOL_F_GETLK 14
- #define SOL_F_PRIV 15
- #define SOL_F_NPRIV 16
- #define SOL_F_QUOTACTL 17
- #define SOL_F_BLOCKS 18
- #define SOL_F_BLKSIZE 19
- #define SOL_F_GETOWN 23
- #define SOL_F_SETOWN 24
- struct sol_flock {
- short l_type;
- short l_whence;
- u32 l_start;
- u32 l_len;
- s32 l_sysid;
- s32 l_pid;
- s32 l_pad[4];
- };
- asmlinkage int solaris_fcntl(unsigned fd, unsigned cmd, u32 arg)
- {
- int (*sys_fcntl)(unsigned,unsigned,unsigned long) =
- (int (*)(unsigned,unsigned,unsigned long))SYS(fcntl);
- int ret, flags;
- switch (cmd) {
- case F_DUPFD:
- case F_GETFD:
- case F_SETFD: return sys_fcntl(fd, cmd, (unsigned long)arg);
- case F_GETFL:
- flags = sys_fcntl(fd, cmd, 0);
- ret = flags & 0xf;
- if (flags & O_SYNC) ret |= 0x8050;
- if (flags & O_NONBLOCK) ret |= 0x80;
- return ret;
- case F_SETFL:
- flags = arg & 0xf;
- if (arg & 0x8050) flags |= O_SYNC;
- if (arg & 0x80) flags |= O_NONBLOCK;
- return sys_fcntl(fd, cmd, (long)flags);
- case SOL_F_GETLK:
- case SOL_F_SETLK:
- case SOL_F_SETLKW:
- {
- struct flock f;
- mm_segment_t old_fs = get_fs();
- switch (cmd) {
- case SOL_F_GETLK: cmd = F_GETLK; break;
- case SOL_F_SETLK: cmd = F_SETLK; break;
- case SOL_F_SETLKW: cmd = F_SETLKW; break;
- }
- if (get_user (f.l_type, &((struct sol_flock *)A(arg))->l_type) ||
- __get_user (f.l_whence, &((struct sol_flock *)A(arg))->l_whence) ||
- __get_user (f.l_start, &((struct sol_flock *)A(arg))->l_start) ||
- __get_user (f.l_len, &((struct sol_flock *)A(arg))->l_len) ||
- __get_user (f.l_pid, &((struct sol_flock *)A(arg))->l_sysid))
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_fcntl(fd, cmd, (unsigned long)&f);
- set_fs(old_fs);
- if (__put_user (f.l_type, &((struct sol_flock *)A(arg))->l_type) ||
- __put_user (f.l_whence, &((struct sol_flock *)A(arg))->l_whence) ||
- __put_user (f.l_start, &((struct sol_flock *)A(arg))->l_start) ||
- __put_user (f.l_len, &((struct sol_flock *)A(arg))->l_len) ||
- __put_user (f.l_pid, &((struct sol_flock *)A(arg))->l_pid) ||
- __put_user (0, &((struct sol_flock *)A(arg))->l_sysid))
- return -EFAULT;
- return ret;
- }
- case SOL_F_FREESP:
- {
- int length;
- int (*sys_newftruncate)(unsigned int, unsigned long)=
- (int (*)(unsigned int, unsigned long))SYS(ftruncate);
- if (get_user(length, &((struct sol_flock*)A(arg))->l_start))
- return -EFAULT;
- return sys_newftruncate(fd, length);
- }
- };
- return -EINVAL;
- }
- asmlinkage int solaris_ulimit(int cmd, int val)
- {
- switch (cmd) {
- case 1: /* UL_GETFSIZE - in 512B chunks */
- return current->rlim[RLIMIT_FSIZE].rlim_cur >> 9;
- case 2: /* UL_SETFSIZE */
- if ((unsigned long)val > (LONG_MAX>>9)) return -ERANGE;
- val <<= 9;
- lock_kernel();
- if (val > current->rlim[RLIMIT_FSIZE].rlim_max) {
- if (!capable(CAP_SYS_RESOURCE)) {
- unlock_kernel();
- return -EPERM;
- }
- current->rlim[RLIMIT_FSIZE].rlim_max = val;
- }
- current->rlim[RLIMIT_FSIZE].rlim_cur = val;
- unlock_kernel();
- return 0;
- case 3: /* UL_GMEMLIM */
- return current->rlim[RLIMIT_DATA].rlim_cur;
- case 4: /* UL_GDESLIM */
- return NR_OPEN;
- }
- return -EINVAL;
- }
- /* At least at the time I'm writing this, Linux doesn't have ACLs, so we
- just fake this */
- asmlinkage int solaris_acl(u32 filename, int cmd, int nentries, u32 aclbufp)
- {
- return -ENOSYS;
- }
- asmlinkage int solaris_facl(unsigned int fd, int cmd, int nentries, u32 aclbufp)
- {
- return -ENOSYS;
- }
- asmlinkage int solaris_pread(unsigned int fd, char *buf, u32 count, u32 pos)
- {
- ssize_t (*sys_pread)(unsigned int, char *, size_t, loff_t) =
- (ssize_t (*)(unsigned int, char *, size_t, loff_t))SYS(pread);
-
- return sys_pread(fd, buf, count, (loff_t)pos);
- }
- asmlinkage int solaris_pwrite(unsigned int fd, char *buf, u32 count, u32 pos)
- {
- ssize_t (*sys_pwrite)(unsigned int, char *, size_t, loff_t) =
- (ssize_t (*)(unsigned int, char *, size_t, loff_t))SYS(pwrite);
-
- return sys_pwrite(fd, buf, count, (loff_t)pos);
- }
- /* POSIX.1 names */
- #define _PC_LINK_MAX 1
- #define _PC_MAX_CANON 2
- #define _PC_MAX_INPUT 3
- #define _PC_NAME_MAX 4
- #define _PC_PATH_MAX 5
- #define _PC_PIPE_BUF 6
- #define _PC_NO_TRUNC 7
- #define _PC_VDISABLE 8
- #define _PC_CHOWN_RESTRICTED 9
- /* POSIX.4 names */
- #define _PC_ASYNC_IO 10
- #define _PC_PRIO_IO 11
- #define _PC_SYNC_IO 12
- #define _PC_LAST 12
- /* This is not a real and complete implementation yet, just to keep
- * the easy Solaris binaries happy.
- */
- asmlinkage int solaris_fpathconf(int fd, int name)
- {
- int ret;
- switch(name) {
- case _PC_LINK_MAX:
- ret = LINK_MAX;
- break;
- case _PC_MAX_CANON:
- ret = MAX_CANON;
- break;
- case _PC_MAX_INPUT:
- ret = MAX_INPUT;
- break;
- case _PC_NAME_MAX:
- ret = NAME_MAX;
- break;
- case _PC_PATH_MAX:
- ret = PATH_MAX;
- break;
- case _PC_PIPE_BUF:
- ret = PIPE_BUF;
- break;
- case _PC_CHOWN_RESTRICTED:
- ret = 1;
- break;
- case _PC_NO_TRUNC:
- case _PC_VDISABLE:
- ret = 0;
- break;
- default:
- ret = -EINVAL;
- break;
- }
- return ret;
- }
- asmlinkage int solaris_pathconf(u32 path, int name)
- {
- return solaris_fpathconf(0, name);
- }
- /* solaris_llseek returns long long - quite difficult */
- asmlinkage long solaris_llseek(struct pt_regs *regs, u32 off_hi, u32 off_lo, int whence)
- {
- int (*sys_llseek)(unsigned int, unsigned long, unsigned long, loff_t *, unsigned int) =
- (int (*)(unsigned int, unsigned long, unsigned long, loff_t *, unsigned int))SYS(_llseek);
- int ret;
- mm_segment_t old_fs = get_fs();
- loff_t retval;
-
- set_fs(KERNEL_DS);
- ret = sys_llseek((unsigned int)regs->u_regs[UREG_I0], off_hi, off_lo, &retval, whence);
- set_fs(old_fs);
- if (ret < 0) return ret;
- regs->u_regs[UREG_I1] = (u32)retval;
- return (retval >> 32);
- }
- /* Have to mask out all but lower 3 bits */
- asmlinkage int solaris_access(u32 filename, long mode)
- {
- int (*sys_access)(const char *, int) =
- (int (*)(const char *, int))SYS(access);
-
- return sys_access((const char *)A(filename), mode & 7);
- }