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| author | Pete Zaitcev <zaitcev@redhat.com> | 2006-06-10 03:10:10 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-21 22:04:17 (GMT) |
| commit | 5b1c674d223eef6c6494be8be91e9e3a3054817e (patch) | |
| tree | 4f7cbbc36d90ec00cd9f958b62cbfc87f550f34f /drivers/usb/mon/mon_text.c | |
| parent | 4bc203d997c0dc1eada4cc9681372c2f7a456c46 (diff) | |
| download | linux-fsl-qoriq-5b1c674d223eef6c6494be8be91e9e3a3054817e.tar.xz | |
[PATCH] USB: update usbmon, fix glued lines
This update contains one bug fix: some lines can come out truncated,
because of the safety cutoff. This happened because I forgot to update
the size when status packets began to be printed.
The rest is:
- Comments updates
- Allow snooping with pkmap on x86_64, which is cache-coherent
- Enlarge event buffers (certainly we can have a couple of pages)
- Add event counter
First touch upon usbmon for 2.6.18.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/mon/mon_text.c')
| -rw-r--r-- | drivers/usb/mon/mon_text.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index ac043ec..9f9236b 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -26,10 +26,13 @@ /* * This limit exists to prevent OOMs when the user process stops reading. + * If usbmon were available to unprivileged processes, it might be open + * to a local DoS. But we have to keep to root in order to prevent + * password sniffing from HID devices. */ -#define EVENT_MAX 25 +#define EVENT_MAX (2*PAGE_SIZE / sizeof(struct mon_event_text)) -#define PRINTF_DFL 130 +#define PRINTF_DFL 160 struct mon_event_text { struct list_head e_link; @@ -111,7 +114,7 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb, * number of corner cases, but it seems that the following is * more or less safe. * - * We do not even try to look transfer_buffer, because it can + * We do not even try to look at transfer_buffer, because it can * contain non-NULL garbage in case the upper level promised to * set DMA for the HCD. */ |