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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-15 13:22:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-15 13:22:56 -0700 |
| commit | fa927894bbb4a4c7669c72bad1924991022fda38 (patch) | |
| tree | 93560f1a096973235fe9ff50c436f5239c1c499a /net/9p/protocol.c | |
| parent | c841e12add6926d64aa608687893465330b5a03e (diff) | |
| parent | 8436318205b9f29e45db88850ec60e326327e241 (diff) | |
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull second vfs update from Al Viro:
"Now that net-next went in... Here's the next big chunk - killing
->aio_read() and ->aio_write().
There'll be one more pile today (direct_IO changes and
generic_write_checks() cleanups/fixes), but I'd prefer to keep that
one separate"
* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
->aio_read and ->aio_write removed
pcm: another weird API abuse
infinibad: weird APIs switched to ->write_iter()
kill do_sync_read/do_sync_write
fuse: use iov_iter_get_pages() for non-splice path
fuse: switch to ->read_iter/->write_iter
switch drivers/char/mem.c to ->read_iter/->write_iter
make new_sync_{read,write}() static
coredump: accept any write method
switch /dev/loop to vfs_iter_write()
serial2002: switch to __vfs_read/__vfs_write
ashmem: use __vfs_read()
export __vfs_read()
autofs: switch to __vfs_write()
new helper: __vfs_write()
switch hugetlbfs to ->read_iter()
coda: switch to ->read_iter/->write_iter
ncpfs: switch to ->read_iter/->write_iter
net/9p: remove (now-)unused helpers
p9_client_attach(): set fid->uid correctly
...
Diffstat (limited to 'net/9p/protocol.c')
| -rw-r--r-- | net/9p/protocol.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/net/9p/protocol.c b/net/9p/protocol.c index ab9127ec5b7a..e9d0f0c1a048 100644 --- a/net/9p/protocol.c +++ b/net/9p/protocol.c @@ -33,6 +33,7 @@ #include <linux/sched.h> #include <linux/stddef.h> #include <linux/types.h> +#include <linux/uio.h> #include <net/9p/9p.h> #include <net/9p/client.h> #include "protocol.h" @@ -69,10 +70,11 @@ static size_t pdu_write(struct p9_fcall *pdu, const void *data, size_t size) } static size_t -pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size) +pdu_write_u(struct p9_fcall *pdu, struct iov_iter *from, size_t size) { size_t len = min(pdu->capacity - pdu->size, size); - if (copy_from_user(&pdu->sdata[pdu->size], udata, len)) + struct iov_iter i = *from; + if (copy_from_iter(&pdu->sdata[pdu->size], len, &i) != len) len = 0; pdu->size += len; @@ -437,23 +439,13 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt, stbuf->extension, stbuf->n_uid, stbuf->n_gid, stbuf->n_muid); } break; - case 'D':{ - uint32_t count = va_arg(ap, uint32_t); - const void *data = va_arg(ap, const void *); - - errcode = p9pdu_writef(pdu, proto_version, "d", - count); - if (!errcode && pdu_write(pdu, data, count)) - errcode = -EFAULT; - } - break; - case 'U':{ + case 'V':{ int32_t count = va_arg(ap, int32_t); - const char __user *udata = - va_arg(ap, const void __user *); + struct iov_iter *from = + va_arg(ap, struct iov_iter *); errcode = p9pdu_writef(pdu, proto_version, "d", count); - if (!errcode && pdu_write_u(pdu, udata, count)) + if (!errcode && pdu_write_u(pdu, from, count)) errcode = -EFAULT; } break; |