* Copyright (c) 2004-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
-#include <linux/compat.h>
-#include <linux/ioctl.h>
#include <linux/mount.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
#include <linux/fsmap.h>
#include "xfs.h"
#include "xfs_fs.h"
+#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
+#include "xfs_iwalk.h"
#include "xfs_itable.h"
-#include "xfs_error.h"
#include "xfs_fsops.h"
-#include "xfs_alloc.h"
#include "xfs_rtalloc.h"
#include "xfs_attr.h"
#include "xfs_ioctl.h"
}
STATIC int
-xfs_inumbers_fmt_compat(
- void __user *ubuffer,
- const struct xfs_inogrp *buffer,
- long count,
- long *written)
+xfs_fsinumbers_fmt_compat(
+ struct xfs_ibulk *breq,
+ const struct xfs_inogrp *igrp)
{
- compat_xfs_inogrp_t __user *p32 = ubuffer;
- long i;
+ struct compat_xfs_inogrp __user *p32 = breq->ubuffer;
- for (i = 0; i < count; i++) {
- if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
- put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
- put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
- return -EFAULT;
- }
- *written = count * sizeof(*p32);
- return 0;
+ if (put_user(igrp->xi_startino, &p32->xi_startino) ||
+ put_user(igrp->xi_alloccount, &p32->xi_alloccount) ||
+ put_user(igrp->xi_allocmask, &p32->xi_allocmask))
+ return -EFAULT;
+
+ return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp));
}
#else
-#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
+#define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt
#endif /* BROKEN_X86_ALIGNMENT */
STATIC int
return 0;
}
-/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
+/*
+ * struct xfs_bstat has differing alignment on intel, & bstime_t sizes
+ * everywhere
+ */
STATIC int
xfs_ioctl32_bstat_copyin(
- xfs_bstat_t *bstat,
- compat_xfs_bstat_t __user *bstat32)
+ struct xfs_bstat *bstat,
+ struct compat_xfs_bstat __user *bstat32)
{
if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
get_user(bstat->bs_mode, &bstat32->bs_mode) ||
/* Return 0 on success or positive error (to xfs_bulkstat()) */
STATIC int
-xfs_bulkstat_one_fmt_compat(
- void __user *ubuffer,
- int ubsize,
- int *ubused,
- const xfs_bstat_t *buffer)
+xfs_fsbulkstat_one_fmt_compat(
+ struct xfs_ibulk *breq,
+ const struct xfs_bulkstat *bstat)
{
- compat_xfs_bstat_t __user *p32 = ubuffer;
+ struct compat_xfs_bstat __user *p32 = breq->ubuffer;
+ struct xfs_bstat bs1;
+ struct xfs_bstat *buffer = &bs1;
- if (ubsize < sizeof(*p32))
- return -ENOMEM;
+ xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
if (put_user(buffer->bs_ino, &p32->bs_ino) ||
put_user(buffer->bs_mode, &p32->bs_mode) ||
put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
put_user(buffer->bs_aextents, &p32->bs_aextents))
return -EFAULT;
- if (ubused)
- *ubused = sizeof(*p32);
- return 0;
-}
-STATIC int
-xfs_bulkstat_one_compat(
- xfs_mount_t *mp, /* mount point for filesystem */
- xfs_ino_t ino, /* inode number to get data for */
- void __user *buffer, /* buffer to place output in */
- int ubsize, /* size of buffer */
- int *ubused, /* bytes used by me */
- int *stat) /* BULKSTAT_RV_... */
-{
- return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
- xfs_bulkstat_one_fmt_compat,
- ubused, stat);
+ return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat));
}
/* copied from xfs_ioctl.c */
STATIC int
-xfs_compat_ioc_bulkstat(
+xfs_compat_ioc_fsbulkstat(
xfs_mount_t *mp,
unsigned int cmd,
- compat_xfs_fsop_bulkreq_t __user *p32)
+ struct compat_xfs_fsop_bulkreq __user *p32)
{
u32 addr;
- xfs_fsop_bulkreq_t bulkreq;
- int count; /* # of records returned */
- xfs_ino_t inlast; /* last inode number */
- int done;
+ struct xfs_fsop_bulkreq bulkreq;
+ struct xfs_ibulk breq = {
+ .mp = mp,
+ .ocount = 0,
+ };
+ xfs_ino_t lastino;
int error;
/*
* to userpace memory via bulkreq.ubuffer. Normally the compat
* functions and structure size are the correct ones to use ...
*/
- inumbers_fmt_pf inumbers_func = xfs_inumbers_fmt_compat;
- bulkstat_one_pf bs_one_func = xfs_bulkstat_one_compat;
- size_t bs_one_size = sizeof(struct compat_xfs_bstat);
+ inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat;
+ bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat;
#ifdef CONFIG_X86_X32
if (in_x32_syscall()) {
* the data written out in compat layout will not match what
* x32 userspace expects.
*/
- inumbers_func = xfs_inumbers_fmt;
- bs_one_func = xfs_bulkstat_one;
- bs_one_size = sizeof(struct xfs_bstat);
+ inumbers_func = xfs_fsinumbers_fmt;
+ bs_one_func = xfs_fsbulkstat_one_fmt;
}
#endif
return -EFAULT;
bulkreq.ocount = compat_ptr(addr);
- if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
+ if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
return -EFAULT;
- if ((count = bulkreq.icount) <= 0)
+ if (bulkreq.icount <= 0)
return -EINVAL;
if (bulkreq.ubuffer == NULL)
return -EINVAL;
+ breq.ubuffer = bulkreq.ubuffer;
+ breq.icount = bulkreq.icount;
+
+ /*
+ * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
+ * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
+ * that *lastip contains either zero or the number of the last inode to
+ * be examined by the previous call and return results starting with
+ * the next inode after that. The new bulk request back end functions
+ * take the inode to start with, so we have to compute the startino
+ * parameter from lastino to maintain correct function. lastino == 0
+ * is a special case because it has traditionally meant "first inode
+ * in filesystem".
+ */
if (cmd == XFS_IOC_FSINUMBERS_32) {
- error = xfs_inumbers(mp, &inlast, &count,
- bulkreq.ubuffer, inumbers_func);
+ breq.startino = lastino ? lastino + 1 : 0;
+ error = xfs_inumbers(&breq, inumbers_func);
+ lastino = breq.startino - 1;
} else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
- int res;
-
- error = bs_one_func(mp, inlast, bulkreq.ubuffer,
- bs_one_size, NULL, &res);
+ breq.startino = lastino;
+ breq.icount = 1;
+ error = xfs_bulkstat_one(&breq, bs_one_func);
+ lastino = breq.startino;
} else if (cmd == XFS_IOC_FSBULKSTAT_32) {
- error = xfs_bulkstat(mp, &inlast, &count,
- bs_one_func, bs_one_size,
- bulkreq.ubuffer, &done);
- } else
+ breq.startino = lastino ? lastino + 1 : 0;
+ error = xfs_bulkstat(&breq, bs_one_func);
+ lastino = breq.startino - 1;
+ } else {
error = -EINVAL;
+ }
if (error)
return error;
- if (bulkreq.ocount != NULL) {
- if (copy_to_user(bulkreq.lastip, &inlast,
- sizeof(xfs_ino_t)))
- return -EFAULT;
+ if (bulkreq.lastip != NULL &&
+ copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
+ return -EFAULT;
- if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
- return -EFAULT;
- }
+ if (bulkreq.ocount != NULL &&
+ copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
+ return -EFAULT;
return 0;
}
case XFS_IOC_FSBULKSTAT_32:
case XFS_IOC_FSBULKSTAT_SINGLE_32:
case XFS_IOC_FSINUMBERS_32:
- return xfs_compat_ioc_bulkstat(mp, cmd, arg);
+ return xfs_compat_ioc_fsbulkstat(mp, cmd, arg);
case XFS_IOC_FD_TO_HANDLE_32:
case XFS_IOC_PATH_TO_HANDLE_32:
case XFS_IOC_PATH_TO_FSHANDLE_32: {
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