#include <linux/file.h>
#include <linux/vfs.h>
#include <linux/ioctl32.h>
+#include <linux/ioctl.h>
#include <linux/init.h>
#include <linux/sockios.h> /* for SIOCDEVPRIVATE */
#include <linux/smb.h>
#include <linux/smb_mount.h>
#include <linux/ncp_mount.h>
+#include <linux/nfs4_mount.h>
#include <linux/smp_lock.h>
#include <linux/syscalls.h>
#include <linux/ctype.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
+#include <asm/ioctls.h>
/*
* Not all architectures have sys_utime, so implement this in terms
&& (kbuf->f_ffree & 0xffffffff00000000ULL))
return -EOVERFLOW;
}
- if (verify_area(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
+ if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
__put_user(kbuf->f_type, &ubuf->f_type) ||
__put_user(kbuf->f_bsize, &ubuf->f_bsize) ||
__put_user(kbuf->f_blocks, &ubuf->f_blocks) ||
&& (kbuf->f_ffree & 0xffffffff00000000ULL))
return -EOVERFLOW;
}
- if (verify_area(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
+ if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
__put_user(kbuf->f_type, &ubuf->f_type) ||
__put_user(kbuf->f_bsize, &ubuf->f_bsize) ||
__put_user(kbuf->f_blocks, &ubuf->f_blocks) ||
}
EXPORT_SYMBOL(unregister_ioctl32_conversion);
+static void compat_ioctl_error(struct file *filp, unsigned int fd,
+ unsigned int cmd, unsigned long arg)
+{
+ char buf[10];
+ char *fn = "?";
+ char *path;
+
+ /* find the name of the device. */
+ path = (char *)__get_free_page(GFP_KERNEL);
+ if (path) {
+ fn = d_path(filp->f_dentry, filp->f_vfsmnt, path, PAGE_SIZE);
+ if (IS_ERR(fn))
+ fn = "?";
+ }
+
+ sprintf(buf,"'%c'", (cmd>>24) & 0x3f);
+ if (!isprint(buf[1]))
+ sprintf(buf, "%02x", buf[1]);
+ printk("ioctl32(%s:%d): Unknown cmd fd(%d) "
+ "cmd(%08x){%s} arg(%08x) on %s\n",
+ current->comm, current->pid,
+ (int)fd, (unsigned int)cmd, buf,
+ (unsigned int)arg, fn);
+
+ if (path)
+ free_page((unsigned long)path);
+}
+
asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
unsigned long arg)
{
- struct file * filp;
+ struct file *filp;
int error = -EBADF;
struct ioctl_trans *t;
+ int fput_needed;
- filp = fget(fd);
- if(!filp)
- goto out2;
-
- if (!filp->f_op || !filp->f_op->ioctl) {
- error = sys_ioctl (fd, cmd, arg);
+ filp = fget_light(fd, &fput_needed);
+ if (!filp)
goto out;
- }
- down_read(&ioctl32_sem);
+ /* RED-PEN how should LSM module know it's handling 32bit? */
+ error = security_file_ioctl(filp, cmd, arg);
+ if (error)
+ goto out_fput;
- t = ioctl32_hash_table[ioctl32_hash (cmd)];
+ /*
+ * To allow the compat_ioctl handlers to be self contained
+ * we need to check the common ioctls here first.
+ * Just handle them with the standard handlers below.
+ */
+ switch (cmd) {
+ case FIOCLEX:
+ case FIONCLEX:
+ case FIONBIO:
+ case FIOASYNC:
+ case FIOQSIZE:
+ break;
- while (t && t->cmd != cmd)
- t = t->next;
- if (t) {
- if (t->handler) {
- lock_kernel();
- error = t->handler(fd, cmd, arg, filp);
- unlock_kernel();
- up_read(&ioctl32_sem);
- } else {
- up_read(&ioctl32_sem);
- error = sys_ioctl(fd, cmd, arg);
+ case FIBMAP:
+ case FIGETBSZ:
+ case FIONREAD:
+ if (S_ISREG(filp->f_dentry->d_inode->i_mode))
+ break;
+ /*FALL THROUGH*/
+
+ default:
+ if (filp->f_op && filp->f_op->compat_ioctl) {
+ error = filp->f_op->compat_ioctl(filp, cmd, arg);
+ if (error != -ENOIOCTLCMD)
+ goto out_fput;
}
+
+ if (!filp->f_op ||
+ (!filp->f_op->ioctl && !filp->f_op->unlocked_ioctl))
+ goto do_ioctl;
+ break;
+ }
+
+ /* When register_ioctl32_conversion is finally gone remove
+ this lock! -AK */
+ down_read(&ioctl32_sem);
+ for (t = ioctl32_hash_table[ioctl32_hash(cmd)]; t; t = t->next) {
+ if (t->cmd == cmd)
+ goto found_handler;
+ }
+ up_read(&ioctl32_sem);
+
+ if (S_ISSOCK(filp->f_dentry->d_inode->i_mode) &&
+ cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
+ error = siocdevprivate_ioctl(fd, cmd, arg);
} else {
- up_read(&ioctl32_sem);
- if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
- error = siocdevprivate_ioctl(fd, cmd, arg);
- } else {
- static int count;
- if (++count <= 50) {
- char buf[10];
- char *fn = "?";
- char *path;
-
- path = (char *)__get_free_page(GFP_KERNEL);
-
- /* find the name of the device. */
- if (path) {
- fn = d_path(filp->f_dentry,
- filp->f_vfsmnt, path,
- PAGE_SIZE);
- if (IS_ERR(fn))
- fn = "?";
- }
+ static int count;
- sprintf(buf,"'%c'", (cmd>>24) & 0x3f);
- if (!isprint(buf[1]))
- sprintf(buf, "%02x", buf[1]);
- printk("ioctl32(%s:%d): Unknown cmd fd(%d) "
- "cmd(%08x){%s} arg(%08x) on %s\n",
- current->comm, current->pid,
- (int)fd, (unsigned int)cmd, buf,
- (unsigned int)arg, fn);
- if (path)
- free_page((unsigned long)path);
- }
- error = -EINVAL;
- }
+ if (++count <= 50)
+ compat_ioctl_error(filp, fd, cmd, arg);
+ error = -EINVAL;
}
-out:
- fput(filp);
-out2:
+
+ goto out_fput;
+
+ found_handler:
+ if (t->handler) {
+ lock_kernel();
+ error = t->handler(fd, cmd, arg, filp);
+ unlock_kernel();
+ up_read(&ioctl32_sem);
+ goto out_fput;
+ }
+
+ up_read(&ioctl32_sem);
+ do_ioctl:
+ error = vfs_ioctl(filp, fd, cmd, arg);
+ out_fput:
+ fput_light(filp, fput_needed);
+ out:
return error;
}
return raw_data;
}
+struct compat_nfs_string {
+ compat_uint_t len;
+ compat_uptr_t data;
+};
+
+static inline void compat_nfs_string(struct nfs_string *dst,
+ struct compat_nfs_string *src)
+{
+ dst->data = compat_ptr(src->data);
+ dst->len = src->len;
+}
+
+struct compat_nfs4_mount_data_v1 {
+ compat_int_t version;
+ compat_int_t flags;
+ compat_int_t rsize;
+ compat_int_t wsize;
+ compat_int_t timeo;
+ compat_int_t retrans;
+ compat_int_t acregmin;
+ compat_int_t acregmax;
+ compat_int_t acdirmin;
+ compat_int_t acdirmax;
+ struct compat_nfs_string client_addr;
+ struct compat_nfs_string mnt_path;
+ struct compat_nfs_string hostname;
+ compat_uint_t host_addrlen;
+ compat_uptr_t host_addr;
+ compat_int_t proto;
+ compat_int_t auth_flavourlen;
+ compat_uptr_t auth_flavours;
+};
+
+static int do_nfs4_super_data_conv(void *raw_data)
+{
+ int version = *(compat_uint_t *) raw_data;
+
+ if (version == 1) {
+ struct compat_nfs4_mount_data_v1 *raw = raw_data;
+ struct nfs4_mount_data *real = raw_data;
+
+ /* copy the fields backwards */
+ real->auth_flavours = compat_ptr(raw->auth_flavours);
+ real->auth_flavourlen = raw->auth_flavourlen;
+ real->proto = raw->proto;
+ real->host_addr = compat_ptr(raw->host_addr);
+ real->host_addrlen = raw->host_addrlen;
+ compat_nfs_string(&real->hostname, &raw->hostname);
+ compat_nfs_string(&real->mnt_path, &raw->mnt_path);
+ compat_nfs_string(&real->client_addr, &raw->client_addr);
+ real->acdirmax = raw->acdirmax;
+ real->acdirmin = raw->acdirmin;
+ real->acregmax = raw->acregmax;
+ real->acregmin = raw->acregmin;
+ real->retrans = raw->retrans;
+ real->timeo = raw->timeo;
+ real->wsize = raw->wsize;
+ real->rsize = raw->rsize;
+ real->flags = raw->flags;
+ real->version = raw->version;
+ }
+ else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
extern int copy_mount_options (const void __user *, unsigned long *);
#define SMBFS_NAME "smbfs"
#define NCPFS_NAME "ncpfs"
+#define NFS4_NAME "nfs4"
asmlinkage long compat_sys_mount(char __user * dev_name, char __user * dir_name,
char __user * type, unsigned long flags,
do_smb_super_data_conv((void *)data_page);
} else if (!strcmp((char *)type_page, NCPFS_NAME)) {
do_ncp_super_data_conv((void *)data_page);
+ } else if (!strcmp((char *)type_page, NFS4_NAME)) {
+ if (do_nfs4_super_data_conv((void *) data_page))
+ goto out4;
}
}
flags, (void*)data_page);
unlock_kernel();
+ out4:
free_page(data_page);
out3:
free_page(dev_page);
int seg;
io_fn_t fn;
iov_fn_t fnv;
- struct inode *inode;
/*
* SuS says "The readv() function *may* fail if the iovcnt argument
goto out;
}
ret = -EFAULT;
- if (verify_area(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
+ if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
goto out;
/*
goto out;
}
- inode = file->f_dentry->d_inode;
- /* VERIFY_WRITE actually means a read, as we write to user space */
- ret = locks_verify_area((type == READ
- ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
- inode, file, *pos, tot_len);
+ ret = rw_verify_area(type, file, pos, tot_len);
if (ret)
goto out;
if (ufdset) {
unsigned long odd;
- if (verify_area(VERIFY_WRITE, ufdset, nr*sizeof(compat_ulong_t)))
+ if (!access_ok(VERIFY_WRITE, ufdset, nr*sizeof(compat_ulong_t)))
return -EFAULT;
odd = nr & 1UL;
fd_set_bits fds;
char *bits;
long timeout;
- int ret, size, max_fdset;
+ int size, max_fdset, ret = -EINVAL;
timeout = MAX_SCHEDULE_TIMEOUT;
if (tvp) {
time_t sec, usec;
- if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
- || (ret = __get_user(sec, &tvp->tv_sec))
- || (ret = __get_user(usec, &tvp->tv_usec)))
+ if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp))
+ || __get_user(sec, &tvp->tv_sec)
+ || __get_user(usec, &tvp->tv_usec)) {
+ ret = -EFAULT;
goto out_nofds;
+ }
- ret = -EINVAL;
if (sec < 0 || usec < 0)
goto out_nofds;
}
}
- ret = -EINVAL;
if (n < 0)
goto out_nofds;
git://git.onelab.eu / linux-2.6.git / blobdiff