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Diffstat (limited to 'fs/splice.c')
-rw-r--r--fs/splice.c38
1 files changed, 23 insertions, 15 deletions
diff --git a/fs/splice.c b/fs/splice.c
index d37431dd60a1..3b7ee656f3aa 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1098,27 +1098,13 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
1098{ 1098{
1099 ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, 1099 ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
1100 loff_t *, size_t, unsigned int); 1100 loff_t *, size_t, unsigned int);
1101 int ret;
1102
1103 if (unlikely(!(out->f_mode & FMODE_WRITE)))
1104 return -EBADF;
1105
1106 if (unlikely(out->f_flags & O_APPEND))
1107 return -EINVAL;
1108
1109 ret = rw_verify_area(WRITE, out, ppos, len);
1110 if (unlikely(ret < 0))
1111 return ret;
1112 1101
1113 if (out->f_op && out->f_op->splice_write) 1102 if (out->f_op && out->f_op->splice_write)
1114 splice_write = out->f_op->splice_write; 1103 splice_write = out->f_op->splice_write;
1115 else 1104 else
1116 splice_write = default_file_splice_write; 1105 splice_write = default_file_splice_write;
1117 1106
1118 file_start_write(out); 1107 return splice_write(pipe, out, ppos, len, flags);
1119 ret = splice_write(pipe, out, ppos, len, flags);
1120 file_end_write(out);
1121 return ret;
1122} 1108}
1123 1109
1124/* 1110/*
@@ -1307,6 +1293,16 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
1307 }; 1293 };
1308 long ret; 1294 long ret;
1309 1295
1296 if (unlikely(!(out->f_mode & FMODE_WRITE)))
1297 return -EBADF;
1298
1299 if (unlikely(out->f_flags & O_APPEND))
1300 return -EINVAL;
1301
1302 ret = rw_verify_area(WRITE, out, opos, len);
1303 if (unlikely(ret < 0))
1304 return ret;
1305
1310 ret = splice_direct_to_actor(in, &sd, direct_splice_actor); 1306 ret = splice_direct_to_actor(in, &sd, direct_splice_actor);
1311 if (ret > 0) 1307 if (ret > 0)
1312 *ppos = sd.pos; 1308 *ppos = sd.pos;
@@ -1362,7 +1358,19 @@ static long do_splice(struct file *in, loff_t __user *off_in,
1362 offset = out->f_pos; 1358 offset = out->f_pos;
1363 } 1359 }
1364 1360
1361 if (unlikely(!(out->f_mode & FMODE_WRITE)))
1362 return -EBADF;
1363
1364 if (unlikely(out->f_flags & O_APPEND))
1365 return -EINVAL;
1366
1367 ret = rw_verify_area(WRITE, out, &offset, len);
1368 if (unlikely(ret < 0))
1369 return ret;
1370
1371 file_start_write(out);
1365 ret = do_splice_from(ipipe, out, &offset, len, flags); 1372 ret = do_splice_from(ipipe, out, &offset, len, flags);
1373 file_end_write(out);
1366 1374
1367 if (!off_out) 1375 if (!off_out)
1368 out->f_pos = offset; 1376 out->f_pos = offset;