diff options
Diffstat (limited to 'fs/9p/vfs_file.c')
| -rw-r--r-- | fs/9p/vfs_file.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index e97c92bd6f16..f455c45a8c5f 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -219,7 +219,9 @@ static ssize_t v9fs_file_write(struct file *filp, const char __user * data, size_t count, loff_t * offset) { - int n, rsize, total = 0; + ssize_t retval; + size_t total = 0; + int n; struct p9_fid *fid; struct p9_client *clnt; struct inode *inode = filp->f_path.dentry->d_inode; @@ -232,14 +234,19 @@ v9fs_file_write(struct file *filp, const char __user * data, fid = filp->private_data; clnt = fid->clnt; - rsize = fid->iounit ? fid->iounit : clnt->msize - P9_IOHDRSZ; + retval = generic_write_checks(filp, &origin, &count, 0); + if (retval) + goto out; - do { - if (count < rsize) - rsize = count; + retval = -EINVAL; + if ((ssize_t) count < 0) + goto out; + retval = 0; + if (!count) + goto out; - n = p9_client_write(fid, NULL, data+total, origin+total, - rsize); + do { + n = p9_client_write(fid, NULL, data+total, origin+total, count); if (n <= 0) break; count -= n; @@ -258,9 +265,11 @@ v9fs_file_write(struct file *filp, const char __user * data, } if (n < 0) - return n; - - return total; + retval = n; + else + retval = total; +out: + return retval; } static int v9fs_file_fsync(struct file *filp, int datasync) |