Greg, please take this at face value, and tell me if you know what the
problem is here.
* I'm calling fs_create_file to register my node under my parent directory.
(I get the address from kallsyms, and call it directly).[1]
* My node shows up in "ls", and I can cat my data from it.[2]
* My test program uses libusb-0.1.12, and does the following:
usb_init();
usb_find_busses();
usb_find_devices();
* Using strace on my test program, I can see that when usb_find_devices()
checks the directory my new node is it, it doesn't see it.[3]
* Digging into usb_find_devices, I see that it's calling readdir() to
enumerate the items in the directory.[4]
* According to what strace tells me, readdir is calling getdents().[3]
ANY idea why my node wouldn't show up?
Notes:
1. I get usbfs_mount, and get the root dentry from it, then walk the linked
list to find my desired parent directory using this:list_for_each_entry(tmp,&parent->d_subdirs, d_u.d_child).
2. ls /proc/bus/usb/005/ -a
. .. 001 002 003
3. open("/dev/bus/usb/005",
O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = 3
getdents(3, /* 4 entries */, 32768) = 64
4. File linux.c, line 380: while ((entry = readdir(dir)) != NULL) {
Chris
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