Date: Wed, 30 Sep 2009 23:41:20 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: SANE vs USB scanner on 8.0 Message-ID: <200909302341.40232.doconnor@gsoft.com.au> In-Reply-To: <200909281536.38747.hselasky@c2i.net> References: <200909282240.53802.doconnor@gsoft.com.au> <200909281536.38747.hselasky@c2i.net>
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On Mon, 28 Sep 2009, Hans Petter Selasky wrote:
> - if (sscanf(dev, "libusb:%d:%d", &busnum, &devnum) !=3D 2)
> + if ((sscanf(dev, "libusb:%d:%d", &busnum, &devnum) !=3D 2) &&
> + (sscanf(dev, "libusb:/dev/usb:ugen%d.%d", &busnum,
> &devnum) !=3D 2)) {
> DBG (DL_MAJOR_ERROR, "%s: could not parse device string:
> %s\n", me, strerror(errno));
> return 0;
>
> If it works, get the patch sent to the sane developers.
Unfortunately no (I reworked it to match the path it uses) and now it=20
segfaults. I rebuilt sane with debugging (is there some way to make libtool
not strip on install? It's so tedious manually editing makefiles to remove
=2Ds..) as well as libusb.
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 801b021c0 (LWP 100292)]
0x000000080140e715 in libusb20_dev_open (pdev=3D0x801b13d00, nTransferMax=
=3D32)
at /usr/src/lib/libusb/libusb20.c:550
550 error =3D pdev->beMethods->open_device(pdev, nTransferMax);
(gdb) bt
#0 0x000000080140e715 in libusb20_dev_open (pdev=3D0x801b13d00, nTransferM=
ax=3D32)
at /usr/src/lib/libusb/libusb20.c:550
#1 0x0000000801408f15 in usb_open (dev=3D0x801b1ae00)
at /usr/src/lib/libusb/libusb20_compat01.c:150
#2 0x000000080065c34f in sanei_usb_open (
devname=3D0x801b09380 "libusb:/dev/usb:/dev/ugen0.5", dn=3D0x7fffffffdc=
0c)
at sanei_usb.c:1143
#3 0x00000008025e5ad3 in snapscani_usb_open (
dev=3D0x801b09380 "libusb:/dev/usb:/dev/ugen0.5", fdp=3D0x7fffffffdc0c,
sense_handler=3D0x8025df7c0 <sense_handler>, pss=3D0x0) at snapscan-usb=
=2Ec:178
#4 0x00000008025eb985 in add_usb_device (
full_name=3D0x801b09080 "libusb:/dev/usb:/dev/ugen0.5") at snapscan.c:5=
90
#5 0x000000080065c0ed in sanei_usb_find_devices (vendor=3D1189, product=3D=
8288,
attach=3D0x8025eb880 <add_usb_device>) at sanei_usb.c:1091
#6 0x000000080065bb3e in sanei_usb_attach_matching_devices (name=3D0x7ffff=
fffdcc1 "",
attach=3D0x8025eb880 <add_usb_device>) at sanei_usb.c:965
#7 0x00000008025ebdac in sane_snapscan_init (version_code=3D0x7fffffffe0f8,
authorize=3D0x401b50 <auth_callback>) at snapscan.c:735
#8 0x000000080066579b in init (be=3D0x801b0da00) at dll.c:613
#9 0x000000080066621b in sane_dll_get_devices (device_list=3D0x7fffffffea0=
0,
=2D--Type <return> to continue, or q <return> to quit---
local_only=3D0) at dll.c:1034
#10 0x0000000800658bbb in sane_get_devices (dl=3D0x7fffffffea00, local=3D0)=
at dll-s.c:17
#11 0x0000000000405a11 in main (argc=3D4, argv=3D0x7fffffffeb30) at scanima=
ge.c:1771
(gdb) print *pdev
$1 =3D {ddesc =3D {LIBUSB20_DEVICE_DESC_FORMAT =3D 0x0, bLength =3D 0 '\0',
bDescriptorType =3D 0 '\0', bcdUSB =3D 0, bDeviceClass =3D 0 '\0',
bDeviceSubClass =3D 0 '\0', bDeviceProtocol =3D 0 '\0', bMaxPacketSize0=
=3D 0 '\0',
idVendor =3D 0, idProduct =3D 0, bcdDevice =3D 0, iManufacturer =3D 0 '=
\0',
iProduct =3D 0 '\0', iSerialNumber =3D 0 '\0', bNumConfigurations =3D 0=
'\0'},
session_data =3D {session_data =3D 0, tv =3D {tv_sec =3D 0, tv_nsec =3D 0=
}, plugtime =3D 0},
dev_entry =3D {tqe_next =3D 0x0, tqe_prev =3D 0x0}, methods =3D 0x0, beMe=
thods =3D 0x0,
pTransfer =3D 0x801b48500, privBeData =3D 0x0, privLuData =3D 0x0,
claimed_interface =3D 0 '\0', file =3D 0, file_ctrl =3D 0, debug =3D 0, n=
Transfer =3D 32,
bus_number =3D 0 '\0', device_address =3D 0 '\0', usb_mode =3D 0 '\0',
usb_speed =3D 0 '\0', is_opened =3D 0 '\0', usb_desc =3D '\0' <repeats 95=
times>}
(gdb) up
#1 0x0000000801408f15 in usb_open (dev=3D0x801b1ae00)
at /usr/src/lib/libusb/libusb20_compat01.c:150
150 err =3D libusb20_dev_open(dev->dev, 16 * 2);
(gdb) print *dev
$2 =3D {next =3D 0x0, prev =3D 0x0, filename =3D "/dev/ugen0.5", '\0' <repe=
ats 1012 times>,
bus =3D 0x801510020, descriptor =3D {bLength =3D 18 '\022', bDescriptorTy=
pe =3D 1 '\001',
bcdUSB =3D 256, bDeviceClass =3D 255 '=FF', bDeviceSubClass =3D 255 '=
=FF',
bDeviceProtocol =3D 255 '=FF', bMaxPacketSize0 =3D 8 '\b', idVendor =3D=
1189,
idProduct =3D 8288, bcdDevice =3D 256, iManufacturer =3D 1 '\001',
iProduct =3D 2 '\002', iSerialNumber =3D 0 '\0', bNumConfigurations =3D=
1 '\001'},
config =3D 0x801b23280, dev =3D 0x801b13d00, devnum =3D 0 '\0', num_child=
ren =3D 0 '\0',
children =3D 0x0}
(gdb) print dev->dev
$3 =3D (void *) 0x801b13d00
(gdb) up
#2 0x000000080065c34f in sanei_usb_open (
devname=3D0x801b09380 "libusb:/dev/usb:/dev/ugen0.5", dn=3D0x7fffffffdc=
0c)
at sanei_usb.c:1143
1143 devices[devcount].libusb_handle =3D
(gdb) list
1138 #ifdef HAVE_LIBUSB
1139 struct usb_device *dev;
1140 struct usb_interface_descriptor *interface;
1141 int result, num;
1142
1143 devices[devcount].libusb_handle =3D
1144 usb_open (devices[devcount].libusb_device);
1145 if (!devices[devcount].libusb_handle)
1146 {
1147 SANE_Status status =3D SANE_STATUS_INVAL;
(gdb) print *devices[devcount].libusb_device
$4 =3D {next =3D 0x0, prev =3D 0x0, filename =3D "/dev/ugen0.5", '\0' <repe=
ats 1012 times>,
bus =3D 0x801510020, descriptor =3D {bLength =3D 18 '\022', bDescriptorTy=
pe =3D 1 '\001',
bcdUSB =3D 256, bDeviceClass =3D 255 '=FF', bDeviceSubClass =3D 255 '=
=FF',
bDeviceProtocol =3D 255 '=FF', bMaxPacketSize0 =3D 8 '\b', idVendor =3D=
1189,
idProduct =3D 8288, bcdDevice =3D 256, iManufacturer =3D 1 '\001',
iProduct =3D 2 '\002', iSerialNumber =3D 0 '\0', bNumConfigurations =3D=
1 '\001'},
config =3D 0x801b23280, dev =3D 0x801b13d00, devnum =3D 0 '\0', num_child=
ren =3D 0 '\0',
children =3D 0x0}
=2D-=20
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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