From: Yann Droneaud <ydroneaud@opteya.com>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Yann Droneaud <ydroneaud@opteya.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
trivial@kernel.org
Subject: [PATCHv7 4/6] file: use get_unused_fd_flags(0) instead of get_unused_fd()
Date: Sun, 1 Jun 2014 15:58:45 +0200 [thread overview]
Message-ID: <65a2618acc6a6f55e4d9aedd89292b0378dac37b.1401630396.git.ydroneaud@opteya.com> (raw)
In-Reply-To: <cover.1401630396.git.ydroneaud@opteya.com>
In-Reply-To: <cover.1401630396.git.ydroneaud@opteya.com>
Macro get_unused_fd() is used to allocate a file descriptor with
default flags. Those default flags (0) can be "unsafe":
O_CLOEXEC must be made the default to not leak file descriptor
across exec().
In a further patch, get_unused_fd() will be removed so that
new code start using get_unused_fd_flags() (or anon_inode_getfd())
with correct flags.
This patch replaces calls to get_unused_fd() with equivalent call to
get_unused_fd_flags(0).
Link: http://lkml.kernel.org/r/cover.1401630396.git.ydroneaud@opteya.com
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
---
fs/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/file.c b/fs/file.c
index 66923fe3176e..4186f81cd9f1 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -868,7 +868,7 @@ SYSCALL_DEFINE1(dup, unsigned int, fildes)
struct file *file = fget_raw(fildes);
if (file) {
- ret = get_unused_fd();
+ ret = get_unused_fd_flags(0);
if (ret >= 0)
fd_install(ret, file);
else
--
1.9.3
next prev parent reply other threads:[~2014-06-01 13:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-01 13:58 [PATCHv7 0/6] Getting rid of get_unused_fd() / enable close-on-exec Yann Droneaud
2014-06-01 13:58 ` [PATCHv7 1/6] ia64: use get_unused_fd_flags(0) instead of get_unused_fd() Yann Droneaud
2014-06-01 13:58 ` [PATCHv7 2/6] ppc/cell: " Yann Droneaud
2014-06-01 13:58 ` [PATCHv7 3/6] binfmt_misc: " Yann Droneaud
2014-06-01 13:58 ` Yann Droneaud [this message]
2014-06-01 13:58 ` [PATCHv7 5/6] fanotify: enable close-on-exec on events' fd when requested in fanotify_init() Yann Droneaud
2014-06-01 14:00 ` [PATCHv7 6/6] file: remove macro get_unused_fd() Yann Droneaud
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