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authorCatalin Marinas <catalin.marinas@arm.com>2012-09-19 12:01:52 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-02 21:35:55 -0400
commit8f9c0119d7ba94c3ad13876acc240d7f12b6d8e1 (patch)
tree44d618a21b60c5a268088bfae6c78c591f1e4334 /fs/read_write.c
parent8c0a85377048b64c880e76ec7368904fe46d0b94 (diff)
downloadop-kernel-dev-8f9c0119d7ba94c3ad13876acc240d7f12b6d8e1.zip
op-kernel-dev-8f9c0119d7ba94c3ad13876acc240d7f12b6d8e1.tar.gz
compat: fs: Generic compat_sys_sendfile implementation
This function is used by sparc, powerpc and arm64 for compat support. The patch adds a generic implementation which calls do_sendfile() directly and avoids set_fs(). The sparc architecture has wrappers for the sign extensions while powerpc relies on the compiler to do the this. The patch adds wrappers for powerpc to handle the u32->int type conversion. compat_sys_sendfile64() can be replaced by a sys_sendfile() call since compat_loff_t has the same size as off_t on a 64-bit system. On powerpc, the patch also changes the 64-bit sendfile call from sys_sendile64 to sys_sendfile. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/read_write.c')
-rw-r--r--fs/read_write.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/read_write.c b/fs/read_write.c
index 28b3827..d065348 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -862,8 +862,8 @@ SYSCALL_DEFINE5(pwritev, unsigned long, fd, const struct iovec __user *, vec,
return ret;
}
-static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos,
- size_t count, loff_t max)
+ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, size_t count,
+ loff_t max)
{
struct fd in, out;
struct inode *in_inode, *out_inode;
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