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Groups > linux.kernel > #1684487
| From | Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 4.9 02/41] fs: completely ignore unknown open flags |
| Date | 2017-07-10 19:30 +0200 |
| Message-ID | <u1KFr-7Ua-3@gated-at.bofh.it> (permalink) |
| References | <u1KvL-7Qx-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christoph Hellwig <hch@lst.de> commit 629e014bb8349fcf7c1e4df19a842652ece1c945 upstream. Currently we just stash anything we got into file->f_flags, and the report it in fcntl(F_GETFD). This patch just clears out all unknown flags so that we don't pass them to the fs or report them. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- fs/open.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/fs/open.c +++ b/fs/open.c @@ -902,6 +902,12 @@ static inline int build_open_flags(int f int lookup_flags = 0; int acc_mode = ACC_MODE(flags); + /* + * Clear out all open flags we don't know about so that we don't report + * them in fcntl(F_GETFD) or similar interfaces. + */ + flags &= VALID_OPEN_FLAGS; + if (flags & (O_CREAT | __O_TMPFILE)) op->mode = (mode & S_IALLUGO) | S_IFREG; else
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[PATCH 4.9 00/41] 4.9.37-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 02/41] fs: completely ignore unknown open flags Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 01/41] fs: add a VALID_OPEN_FLAGS Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 03/41] driver core: platform: fix race condition with driver_override Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 05/41] tracing/kprobes: Allow to create probe with a module name starting with a digit Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 19/41] pinctrl: sh-pfc: r8a7794: Swap ATA signals Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 04/41] ceph: choose readdir frag based on previous readdir reply Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
[PATCH 4.9 08/41] usb: dwc3: replace %p with %pK Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-10 19:30 +0200
Re: [PATCH 4.9 00/41] 4.9.37-stable review Krister Johansen <kjlx@templeofstupid.com> - 2017-07-11 00:40 +0200
Re: [PATCH 4.9 00/41] 4.9.37-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-11 12:00 +0200
Re: [PATCH 4.9 00/41] 4.9.37-stable review Guenter Roeck <linux@roeck-us.net> - 2017-07-11 02:50 +0200
Re: [PATCH 4.9 00/41] 4.9.37-stable review Sumit Semwal <sumit.semwal@linaro.org> - 2017-07-11 12:00 +0200
Re: [PATCH 4.9 00/41] 4.9.37-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-11 12:40 +0200
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