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authorChristoph Hellwig <hch@lst.de>2020-09-25 07:51:41 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-10-03 07:02:13 +0300
commit89cd35c58bc2e36bfdc23dde67a429b08cf4ae03 (patch)
tree540a413bab63b20e24dba2dece0044277bb778a1 /lib/iov_iter.c
parentbfdc59701d6d100c99c3b987bcffd1c204e393c8 (diff)
downloadlinux-89cd35c58bc2e36bfdc23dde67a429b08cf4ae03.tar.xz
iov_iter: transparently handle compat iovecs in import_iovec
Use in compat_syscall to import either native or the compat iovecs, and remove the now superflous compat_import_iovec. This removes the need for special compat logic in most callers, and the remaining ones can still be simplified by using __import_iovec with a bool compat parameter. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib/iov_iter.c')
-rw-r--r--lib/iov_iter.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index e6cb51da3424..2e452ce7388b 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1806,21 +1806,11 @@ ssize_t import_iovec(int type, const struct iovec __user *uvec,
unsigned nr_segs, unsigned fast_segs,
struct iovec **iovp, struct iov_iter *i)
{
- return __import_iovec(type, uvec, nr_segs, fast_segs, iovp, i, false);
+ return __import_iovec(type, uvec, nr_segs, fast_segs, iovp, i,
+ in_compat_syscall());
}
EXPORT_SYMBOL(import_iovec);
-#ifdef CONFIG_COMPAT
-ssize_t compat_import_iovec(int type, const struct compat_iovec __user *uvec,
- unsigned nr_segs, unsigned fast_segs, struct iovec **iovp,
- struct iov_iter *i)
-{
- return __import_iovec(type, (const struct iovec __user *)uvec, nr_segs,
- fast_segs, iovp, i, true);
-}
-EXPORT_SYMBOL(compat_import_iovec);
-#endif
-
int import_single_range(int rw, void __user *buf, size_t len,
struct iovec *iov, struct iov_iter *i)
{