[PATCH] maps.2: fd for a file mapping must be opened for reading

From: Andrey Vagin
Date: Fri Apr 04 2014 - 04:25:22 EST


Here is no difference between MAP_SHARED and MAP_PRIVATE.

do_mmap_pgoff()
switch (flags & MAP_TYPE) {
case MAP_SHARED:
...
/* fall through */
case MAP_PRIVATE:
if (!(file->f_mode & FMODE_READ))
return -EACCES;

Signed-off-by: Andrey Vagin <avagin@xxxxxxxxxx>
---
man2/mmap.2 | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/man2/mmap.2 b/man2/mmap.2
index c0fd321..b469f84 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -393,9 +393,7 @@ is set (probably to
.TP
.B EACCES
A file descriptor refers to a non-regular file.
-Or
-.B MAP_PRIVATE
-was requested, but
+Or a file mapping was requested, but
.I fd
is not open for reading.
Or
--
1.8.5.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/