diff options
Diffstat (limited to 'executor/common_usb.h')
| -rw-r--r-- | executor/common_usb.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/executor/common_usb.h b/executor/common_usb.h index 521ea3c28..0722750b7 100644 --- a/executor/common_usb.h +++ b/executor/common_usb.h @@ -168,6 +168,8 @@ const char* usb_class_to_string(unsigned value) return "unknown"; } +// A helper function that allows to see what kind of device is being emulated. +// Useful for debugging. static void analyze_usb_device(struct usb_device_index* index) { debug("analyze_usb_device: idVendor = %04x\n", (unsigned)index->dev->idVendor); @@ -497,6 +499,8 @@ static bool analyze_control_request_vendor(struct usb_device_index* index, struc return true; } +// A helper function that prints a request in readable form and returns whether descriptions for this +// request exist. Needs to be updated manually when new descriptions are added. Useful for debugging. static void analyze_control_request(int fd, struct usb_ctrlrequest* ctrl) { struct usb_device_index* index = lookup_usb_index(fd); @@ -560,7 +564,7 @@ static const char default_lang_id[] = { // lookup_connect_response_in() is a helper function that returns a response to a USB IN request // based on syzkaller-generated arguments provided to syz_usb_connect* pseudo-syscalls. The data // and its length to be used as a response are returned in *response_data and *response_length. -// The return value of this function indicates whether the request is known to syzkaller. +// The return value of this function lookup_connect_response_inindicates whether the request is known to syzkaller. static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs, const struct usb_ctrlrequest* ctrl, @@ -636,7 +640,7 @@ static bool lookup_connect_response_in(int fd, const struct vusb_connect_descrip break; } - fail("lookup_connect_response_in: unknown request"); + debug("lookup_connect_response_in: unknown request"); return false; } @@ -662,7 +666,7 @@ static bool lookup_connect_response_out_generic(int fd, const struct vusb_connec break; } - fail("lookup_connect_response_out: unknown request"); + debug("lookup_connect_response_out: unknown request"); return false; } #endif // SYZ_EXECUTOR || __NR_syz_usb_connect |