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Diffstat (limited to 'fs/nilfs2/ioctl.c')
-rw-r--r--fs/nilfs2/ioctl.c38
1 files changed, 23 insertions, 15 deletions
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 5ce06a01c7e..d9e3990f958 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -37,13 +37,14 @@
static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
struct nilfs_argv *argv, int dir,
ssize_t (*dofunc)(struct the_nilfs *,
- int, int,
+ __u64 *, int,
void *, size_t, size_t))
{
void *buf;
size_t maxmembs, total, n;
ssize_t nr;
int ret, i;
+ __u64 pos, ppos;
if (argv->v_nmembs == 0)
return 0;
@@ -58,6 +59,7 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
ret = 0;
total = 0;
+ pos = argv->v_index;
for (i = 0; i < argv->v_nmembs; i += n) {
n = (argv->v_nmembs - i < maxmembs) ?
argv->v_nmembs - i : maxmembs;
@@ -68,8 +70,9 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
ret = -EFAULT;
break;
}
- nr = (*dofunc)(nilfs, argv->v_index + i, argv->v_flags, buf,
- argv->v_size, n);
+ ppos = pos;
+ nr = (*dofunc)(nilfs, &pos, argv->v_flags, buf, argv->v_size,
+ n);
if (nr < 0) {
ret = nr;
break;
@@ -82,6 +85,10 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
break;
}
total += nr;
+ if ((size_t)nr < n)
+ break;
+ if (pos == ppos)
+ pos += n;
}
argv->v_nmembs = total;
@@ -138,10 +145,10 @@ nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
}
static ssize_t
-nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
- return nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, index, flags, buf,
+ return nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, posp, flags, buf,
nmembs);
}
@@ -186,10 +193,10 @@ static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
}
static ssize_t
-nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
- return nilfs_sufile_get_suinfo(nilfs->ns_sufile, index, buf, nmembs);
+ return nilfs_sufile_get_suinfo(nilfs->ns_sufile, *posp, buf, nmembs);
}
static int nilfs_ioctl_get_suinfo(struct inode *inode, struct file *filp,
@@ -233,7 +240,7 @@ static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
}
static ssize_t
-nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
return nilfs_dat_get_vinfo(nilfs_dat_inode(nilfs), buf, nmembs);
@@ -262,7 +269,7 @@ static int nilfs_ioctl_get_vinfo(struct inode *inode, struct file *filp,
}
static ssize_t
-nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
struct inode *dat = nilfs_dat_inode(nilfs);
@@ -341,7 +348,7 @@ static int nilfs_ioctl_move_inode_block(struct inode *inode,
}
static ssize_t
-nilfs_ioctl_do_move_blocks(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_move_blocks(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
struct inode *inode;
@@ -413,7 +420,7 @@ static inline int nilfs_ioctl_move_blocks(struct the_nilfs *nilfs,
}
static ssize_t
-nilfs_ioctl_do_delete_checkpoints(struct the_nilfs *nilfs, int index,
+nilfs_ioctl_do_delete_checkpoints(struct the_nilfs *nilfs, __u64 *posp,
int flags, void *buf, size_t size,
size_t nmembs)
{
@@ -439,7 +446,7 @@ static inline int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs,
}
static ssize_t
-nilfs_ioctl_do_free_vblocknrs(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_free_vblocknrs(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
int ret = nilfs_dat_freev(nilfs_dat_inode(nilfs), buf, nmembs);
@@ -456,8 +463,9 @@ static inline int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs,
}
static ssize_t
-nilfs_ioctl_do_mark_blocks_dirty(struct the_nilfs *nilfs, int index, int flags,
- void *buf, size_t size, size_t nmembs)
+nilfs_ioctl_do_mark_blocks_dirty(struct the_nilfs *nilfs, __u64 *posp,
+ int flags, void *buf, size_t size,
+ size_t nmembs)
{
struct inode *dat = nilfs_dat_inode(nilfs);
struct nilfs_bmap *bmap = NILFS_I(dat)->i_bmap;
@@ -506,7 +514,7 @@ static inline int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs,
}
static ssize_t
-nilfs_ioctl_do_free_segments(struct the_nilfs *nilfs, int index, int flags,
+nilfs_ioctl_do_free_segments(struct the_nilfs *nilfs, __u64 *posp, int flags,
void *buf, size_t size, size_t nmembs)
{
struct nilfs_sb_info *sbi = nilfs_get_writer(nilfs);