Compare commits
No commits in common. "master" and "v1.14" have entirely different histories.
2
.gitignore
vendored
2
.gitignore
vendored
@ -21,5 +21,3 @@ examples/ioctl
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examples/logring
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examples/pager
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examples/uid-filter
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examples/mmap-read
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examples/mmap-test
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142
.travis.yml
142
.travis.yml
@ -1,142 +0,0 @@
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language: c
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os: linux
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dist: trusty
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compiler: gcc
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env:
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global:
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- KERNEL_GIT="https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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matrix:
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include:
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# Older version of the kernel
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# - name: "Kernel 2.6.13"
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# env: KERNEL_BRANCH="v2.6.13" GCC_VER="gcc-4.9"
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# addons:
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# apt:
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# packages:
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# - gcc-4.9
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# sources:
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# - ubuntu-toolchain-r-test
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- name: "Kernel 2.6.32"
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env: KERNEL_BRANCH="v2.6.32" GCC_VER="gcc-4.9"
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addons:
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apt:
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packages:
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- gcc-4.9
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sources:
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- ubuntu-toolchain-r-test
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- name: "Kernel 3.10.0"
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env: KERNEL_BRANCH="v3.10" GCC_VER="gcc-4.9"
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addons:
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apt:
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packages:
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- gcc-4.9
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sources:
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- ubuntu-toolchain-r-test
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# Here are actively supported kernel
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- name: "Kernel 3.16.y LTS"
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env: KERNEL_BRANCH="linux-3.16.y" GCC_VER="gcc-5"
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addons:
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apt:
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packages:
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||||
- gcc-5
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||||
sources:
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||||
- ubuntu-toolchain-r-test
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||||
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||||
- name: "Kernel 4.4.y LTS"
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env: KERNEL_BRANCH="linux-4.4.y" GCC_VER="gcc-5"
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addons:
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||||
apt:
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packages:
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||||
- gcc-5
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||||
sources:
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||||
- ubuntu-toolchain-r-test
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||||
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- name: "Kernel 4.9.y LTS"
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env: KERNEL_BRANCH="linux-4.9.y" GCC_VER="gcc-6"
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addons:
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||||
apt:
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packages:
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- gcc-6
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||||
sources:
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||||
- ubuntu-toolchain-r-test
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||||
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||||
- name: "Kernel 4.14.y LTS"
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env: KERNEL_BRANCH="linux-4.14.y" GCC_VER="gcc-7"
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addons:
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||||
apt:
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packages:
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||||
- libelf-dev
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- gcc-7
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||||
sources:
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||||
- ubuntu-toolchain-r-test
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||||
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- name: "Kernel 4.19.y LTS"
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||||
env: KERNEL_BRANCH="linux-4.19.y" GCC_VER="gcc-7"
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||||
addons:
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||||
apt:
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||||
packages:
|
||||
- libelf-dev
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||||
- gcc-7
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||||
sources:
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||||
- ubuntu-toolchain-r-test
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||||
|
||||
- name: "Kernel 5.4.y LTS"
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||||
env: KERNEL_BRANCH="linux-5.4.y" GCC_VER="gcc-8"
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addons:
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||||
apt:
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||||
packages:
|
||||
- libelf-dev
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||||
- gcc-8
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||||
sources:
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- ubuntu-toolchain-r-test
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|
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# Stable versions
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- name: "Kernel 5.7.y STABLE"
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env: KERNEL_BRANCH="linux-5.7.y" GCC_VER="gcc-8"
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addons:
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||||
apt:
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||||
packages:
|
||||
- libelf-dev
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||||
- gcc-8
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||||
sources:
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||||
- ubuntu-toolchain-r-test
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||||
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- name: "Kernel 5.8.y STABLE"
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env: KERNEL_BRANCH="linux-5.8.y" GCC_VER="gcc-8"
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addons:
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||||
apt:
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||||
packages:
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||||
- libelf-dev
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||||
- gcc-8
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||||
sources:
|
||||
- ubuntu-toolchain-r-test
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allow_failures:
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- name: "Kernel 5.8.y STABLE"
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# Here checkout kernels
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before_script:
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- eval "export CC=${GCC_VER}"
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- eval "${CC} --version"
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- git clone ${KERNEL_GIT} --depth=1 --branch=${KERNEL_BRANCH} ${KERNEL_BRANCH}
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- pushd .
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- cd $KERNEL_BRANCH
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- yes "" | make oldconfig CC=${GCC_VER}
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- make prepare CC=${GCC_VER}
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- make scripts CC=${GCC_VER}
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- popd
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# Now build with kernel sources
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script:
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- make KDIR=${PWD}/${KERNEL_BRANCH} CC=${GCC_VER}
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# Not sure if I should cache the kernel source tree...
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#cache:
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# directories:
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# - '$HOME/.sonar/cache'
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2
Makefile
2
Makefile
@ -23,6 +23,8 @@ export
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####################################################
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SUBDIRS = kfusd libfusd examples
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default:
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$(MAKE) -C libfusd
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$(MAKE) -C kfusd
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@ -2,8 +2,6 @@
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FUSD: A Linux Framework for User-Space Devices
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----------------------------------------------
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[](https://travis-ci.org/Godzil/fusd)
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**Welcome to FUSD!**
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This is FUSD snapshot 20110401, released 18 January 2012. This fork is based
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@ -150,6 +150,30 @@ struct fusd_dev_t_s {
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/* pointer to allow a dev to be placed on a dev_list */
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struct list_head devlist;
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};
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/**** Function Prototypes ****/
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STATIC int maybe_free_fusd_dev(fusd_dev_t *fusd_dev);
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STATIC int find_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file);
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STATIC int free_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file);
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STATIC int fusd_fops_call_send(fusd_file_t *fusd_file_arg,
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fusd_msg_t *fusd_msg, struct fusd_transaction** transaction);
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STATIC int fusd_fops_call_wait(fusd_file_t *fusd_file_arg,
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fusd_msg_t **fusd_msg_reply, struct fusd_transaction* transaction);
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STATIC void fusd_fops_call_done(fusd_file_t *fusd_file);
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STATIC void fusd_forge_close(fusd_msg_t *msg, fusd_dev_t *fusd_dev);
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STATIC int fusd_add_transaction(fusd_file_t *fusd_file, int transid, int subcmd, int size, struct fusd_transaction** out_transaction);
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STATIC void fusd_cleanup_transaction(fusd_file_t *fusd_file, struct fusd_transaction* transaction);
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STATIC void fusd_remove_transaction(fusd_file_t *fusd_file, struct fusd_transaction* transaction);
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STATIC struct fusd_transaction* fusd_find_transaction(fusd_file_t *fusd_file, int transid);
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STATIC struct fusd_transaction* fusd_find_transaction_by_pid(fusd_file_t *fusd_file, int pid);
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||||
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||||
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/**** Utility functions & macros ****/
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@ -9,7 +9,7 @@ GIT_DESCRIBE = $(shell git describe --dirty --tags)
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KERNEL_VER ?= 2.6.32.7
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default:
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$(MAKE) -C $(KDIR) M=$(PWD) EXTRA_CFLAGS="-I$(PWD)/../include -DGIT_DESCRIBE='\"${GIT_DESCRIBE}\"'" V=1 modules
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$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) EXTRA_CFLAGS="-I$(PWD)/../include -DGIT_DESCRIBE='\"${GIT_DESCRIBE}\"'" V=1 modules
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install:
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install -d -m 0755 $(ROOTFS)/lib/modules/$(KERNEL_VER)/kernel/drivers/misc
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210
kfusd/kfusd.c
210
kfusd/kfusd.c
@ -65,7 +65,6 @@
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#include <linux/init.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/aio.h>
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#include <linux/mman.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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@ -76,7 +75,6 @@
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#include <linux/cdev.h>
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#include <linux/device.h>
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#include <linux/highmem.h>
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#include <linux/sched.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
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#include <linux/sched/signal.h>
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@ -88,6 +86,8 @@
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#include <asm/pgtable.h>
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#include <asm/pgalloc.h>
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#define STATIC
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#ifndef GIT_DESCRIBE
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#define GIT_DESCRIBE "unknownversion-dirty"
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#endif
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@ -145,15 +145,10 @@
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#define CLASS_DEVICE_DESTROY(a, b) device_destroy(a, b)
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)
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#define GET_USER_PAGES(t,m,s,n,w,f,p,v) get_user_pages_remote(t,m,s,n,(w?FOLL_WRITE:0)|(f?FOLL_FORCE:0),p,v, NULL)
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)
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#define GET_USER_PAGES(t,m,s,n,w,f,p,v) get_user_pages_remote(t,m,s,n,(w?FOLL_WRITE:0)|(f?FOLL_FORCE:0),p,v)
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
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#define GET_USER_PAGES(t,m,s,n,w,f,p,v) get_user_pages_remote(t,m,s,n,w,f,p,v)
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 168) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
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/* WTH? a small subset of 4.4 have changes that does not exist until 4.9 with a new function name */
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#define GET_USER_PAGES(t,m,s,n,w,f,p,v) get_user_pages(t,m,s,n,(w?FOLL_WRITE:0)|(f?FOLL_FORCE:0),p,v)
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#else
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#define GET_USER_PAGES(t, m, s, n, w, f, p, v) get_user_pages(t,m,s,n,w,f,p,v)
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#endif
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@ -174,11 +169,11 @@
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#error "***FUSD doesn't work before Linux Kernel v2.6.13"
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#endif
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static struct cdev *fusd_control_cdev;
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static struct cdev *fusd_status_cdev;
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STATIC struct cdev *fusd_control_cdev;
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STATIC struct cdev *fusd_status_cdev;
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static dev_t control_id;
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static dev_t status_id;
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STATIC dev_t control_id;
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STATIC dev_t status_id;
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static struct CLASS *fusd_class;
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||||
@ -191,13 +186,13 @@ static struct device *fusd_status_device;
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#endif
|
||||
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||||
/* version number incremented for each registered device */
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||||
static int last_version = 1;
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||||
STATIC int last_version = 1;
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||||
|
||||
/* version number incremented for each transaction to userspace */
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||||
static int last_transid = 1;
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STATIC int last_transid = 1;
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||||
|
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/* wait queue that is awakened when new devices are registered */
|
||||
static DECLARE_WAIT_QUEUE_HEAD (new_device_wait);
|
||||
STATIC DECLARE_WAIT_QUEUE_HEAD (new_device_wait);
|
||||
|
||||
/* the list of valid devices, and sem to protect it */
|
||||
LIST_HEAD (fusd_devlist_head);
|
||||
@ -215,31 +210,11 @@ MODULE_VERSION(GIT_DESCRIBE);
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||||
MODULE_LICENSE ("GPL");
|
||||
//#endif
|
||||
|
||||
/**** Function Prototypes ****/
|
||||
static int maybe_free_fusd_dev(fusd_dev_t *fusd_dev);
|
||||
|
||||
static int find_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file);
|
||||
static int free_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file);
|
||||
|
||||
static int fusd_fops_call_send(fusd_file_t *fusd_file_arg,
|
||||
fusd_msg_t *fusd_msg, struct fusd_transaction** transaction);
|
||||
static int fusd_fops_call_wait(fusd_file_t *fusd_file_arg,
|
||||
fusd_msg_t **fusd_msg_reply, struct fusd_transaction* transaction);
|
||||
|
||||
static void fusd_forge_close(fusd_msg_t *msg, fusd_dev_t *fusd_dev);
|
||||
|
||||
static int fusd_add_transaction(fusd_file_t *fusd_file, int transid, int subcmd, int size, struct fusd_transaction** out_transaction);
|
||||
static void fusd_cleanup_transaction(fusd_file_t *fusd_file, struct fusd_transaction* transaction);
|
||||
static void fusd_remove_transaction(fusd_file_t *fusd_file, struct fusd_transaction* transaction);
|
||||
static struct fusd_transaction* fusd_find_transaction(fusd_file_t *fusd_file, int transid);
|
||||
static struct fusd_transaction* fusd_find_transaction_by_pid(fusd_file_t *fusd_file, int pid);
|
||||
|
||||
|
||||
/***************************Debugging Support*****************************/
|
||||
|
||||
#ifdef CONFIG_FUSD_DEBUG
|
||||
|
||||
static int fusd_debug_level = CONFIG_FUSD_DEBUGLEVEL;
|
||||
STATIC int fusd_debug_level = CONFIG_FUSD_DEBUGLEVEL;
|
||||
module_param (fusd_debug_level, int, S_IRUGO);
|
||||
|
||||
# define BUFSIZE 1000 /* kernel's kmalloc pool has a 1012-sized bucket */
|
||||
@ -248,7 +223,7 @@ static int debug_throttle = 0; /* emit a maximum number of debug
|
||||
out the machine accidentally if a
|
||||
daemon disappears with open files */
|
||||
|
||||
static void rdebug_real(char *fmt, ...)
|
||||
STATIC void rdebug_real(char *fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
int len;
|
||||
@ -301,7 +276,7 @@ typedef struct
|
||||
|
||||
mem_debug_t *mem_debug;
|
||||
|
||||
static int fusd_mem_init (void)
|
||||
STATIC int fusd_mem_init (void)
|
||||
{
|
||||
int i;
|
||||
|
||||
@ -321,7 +296,7 @@ static int fusd_mem_init (void)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void fusd_mem_cleanup (void)
|
||||
STATIC void fusd_mem_cleanup (void)
|
||||
{
|
||||
int i;
|
||||
int count = 0;
|
||||
@ -337,7 +312,7 @@ static void fusd_mem_cleanup (void)
|
||||
kfree(mem_debug);
|
||||
}
|
||||
|
||||
static void fusd_mem_add (void *ptr, int line, int size)
|
||||
STATIC void fusd_mem_add (void *ptr, int line, int size)
|
||||
{
|
||||
int i;
|
||||
|
||||
@ -357,7 +332,7 @@ static void fusd_mem_add (void *ptr, int line, int size)
|
||||
RDEBUG(1, "WARNING - memdebug out of space!!!!");
|
||||
}
|
||||
|
||||
static void fusd_mem_del (void *ptr)
|
||||
STATIC void fusd_mem_del (void *ptr)
|
||||
{
|
||||
int i;
|
||||
for ( i = 0; i < MAX_MEM_DEBUG; i++ )
|
||||
@ -371,7 +346,7 @@ static void fusd_mem_del (void *ptr)
|
||||
RDEBUG(2, "WARNING - memdebug is confused!!!!");
|
||||
}
|
||||
|
||||
static void *fusd_kmalloc (size_t size, int type, int line)
|
||||
STATIC void *fusd_kmalloc (size_t size, int type, int line)
|
||||
{
|
||||
void *ptr = kmalloc(size, type);
|
||||
down(&fusd_memdebug_sem);
|
||||
@ -380,7 +355,7 @@ static void *fusd_kmalloc (size_t size, int type, int line)
|
||||
return ptr;
|
||||
}
|
||||
|
||||
static void fusd_kfree (void *ptr)
|
||||
STATIC void fusd_kfree (void *ptr)
|
||||
{
|
||||
down(&fusd_memdebug_sem);
|
||||
fusd_mem_del(ptr);
|
||||
@ -388,7 +363,7 @@ static void fusd_kfree (void *ptr)
|
||||
up(&fusd_memdebug_sem);
|
||||
}
|
||||
|
||||
static void *fusd_vmalloc (size_t size, int line)
|
||||
STATIC void *fusd_vmalloc (size_t size, int line)
|
||||
{
|
||||
void *ptr = vmalloc(size);
|
||||
down(&fusd_memdebug_sem);
|
||||
@ -397,7 +372,7 @@ static void *fusd_vmalloc (size_t size, int line)
|
||||
return ptr;
|
||||
}
|
||||
|
||||
static void fusd_vfree (void *ptr)
|
||||
STATIC void fusd_vfree (void *ptr)
|
||||
{
|
||||
down(&fusd_memdebug_sem);
|
||||
fusd_mem_del(ptr);
|
||||
@ -416,7 +391,7 @@ static void fusd_vfree (void *ptr)
|
||||
/************** STATE MANAGEMENT AND BOOKKEEPING UTILITIES ***************/
|
||||
/*************************************************************************/
|
||||
|
||||
static inline void init_fusd_msg(fusd_msg_t *fusd_msg)
|
||||
STATIC inline void init_fusd_msg(fusd_msg_t *fusd_msg)
|
||||
{
|
||||
if (fusd_msg == NULL)
|
||||
return;
|
||||
@ -429,7 +404,7 @@ static inline void init_fusd_msg(fusd_msg_t *fusd_msg)
|
||||
/*
|
||||
* free a fusd_msg, and NULL out the pointer that points to that fusd_msg.
|
||||
*/
|
||||
static inline void free_fusd_msg(fusd_msg_t **fusd_msg)
|
||||
STATIC inline void free_fusd_msg(fusd_msg_t **fusd_msg)
|
||||
{
|
||||
if (fusd_msg == NULL || *fusd_msg == NULL)
|
||||
return;
|
||||
@ -450,7 +425,7 @@ static inline void free_fusd_msg(fusd_msg_t **fusd_msg)
|
||||
* num_files<array_size/4, the size is halved. Array is kept as is if
|
||||
* the malloc fails. Returns a pointer to the new file struct or NULL
|
||||
* if there isn't one. */
|
||||
static fusd_file_t **fusd_dev_adjsize(fusd_dev_t *fusd_dev)
|
||||
STATIC fusd_file_t **fusd_dev_adjsize(fusd_dev_t *fusd_dev)
|
||||
{
|
||||
fusd_file_t **old_array;
|
||||
int old_size;
|
||||
@ -514,7 +489,7 @@ static fusd_file_t **fusd_dev_adjsize(fusd_dev_t *fusd_dev)
|
||||
*
|
||||
* Returns: 1 if the device was freed
|
||||
* 0 if the device still exists (and can be unlocked) */
|
||||
static int maybe_free_fusd_dev(fusd_dev_t *fusd_dev)
|
||||
STATIC int maybe_free_fusd_dev(fusd_dev_t *fusd_dev)
|
||||
{
|
||||
fusd_msgC_t *ptr, *next;
|
||||
|
||||
@ -588,7 +563,7 @@ static int maybe_free_fusd_dev(fusd_dev_t *fusd_dev)
|
||||
* device state itself is freed.
|
||||
*
|
||||
*/
|
||||
static void zombify_dev(fusd_dev_t *fusd_dev)
|
||||
STATIC void zombify_dev(fusd_dev_t *fusd_dev)
|
||||
{
|
||||
int i;
|
||||
|
||||
@ -613,7 +588,7 @@ static void zombify_dev(fusd_dev_t *fusd_dev)
|
||||
* returns index if found, -1 if not found. ASSUMES WE HAVE A VALID
|
||||
* fusd_dev. fusd_file may be NULL if we are searching for an empty
|
||||
* slot. */
|
||||
static int find_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file)
|
||||
STATIC int find_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file)
|
||||
{
|
||||
int i, num_files = fusd_dev->num_files;
|
||||
fusd_file_t **files = fusd_dev->files;
|
||||
@ -632,7 +607,7 @@ static int find_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file)
|
||||
* freed. If the device is freed, then do not try to unlock it!
|
||||
* (Callers: Check the return value before unlocking!)
|
||||
*/
|
||||
static int free_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file)
|
||||
STATIC int free_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file)
|
||||
{
|
||||
int i;
|
||||
struct list_head *tmp, *it;
|
||||
@ -698,7 +673,7 @@ static int free_fusd_file(fusd_dev_t *fusd_dev, fusd_file_t *fusd_file)
|
||||
* call on that file descriptor -- well, we lose. Clear state of that
|
||||
* old syscall out and continue as usual.
|
||||
*/
|
||||
static struct fusd_transaction *fusd_find_incomplete_transaction(fusd_file_t *fusd_file, int subcmd)
|
||||
STATIC struct fusd_transaction *fusd_find_incomplete_transaction(fusd_file_t *fusd_file, int subcmd)
|
||||
{
|
||||
struct fusd_transaction *transaction = fusd_find_transaction_by_pid(fusd_file, current->pid);
|
||||
if (transaction == NULL)
|
||||
@ -717,7 +692,7 @@ static struct fusd_transaction *fusd_find_incomplete_transaction(fusd_file_t *fu
|
||||
return transaction;
|
||||
}
|
||||
|
||||
static int send_to_dev(fusd_dev_t *fusd_dev, fusd_msg_t *fusd_msg, int locked)
|
||||
STATIC int send_to_dev(fusd_dev_t *fusd_dev, fusd_msg_t *fusd_msg, int locked)
|
||||
{
|
||||
fusd_msgC_t *fusd_msgC;
|
||||
|
||||
@ -760,7 +735,7 @@ zombie_dev:
|
||||
* free_fusd_file, when we throw away a reply that had been
|
||||
* pending for a restart.
|
||||
*/
|
||||
static void fusd_forge_close(fusd_msg_t *msg, fusd_dev_t *fusd_dev)
|
||||
STATIC void fusd_forge_close(fusd_msg_t *msg, fusd_dev_t *fusd_dev)
|
||||
{
|
||||
RDEBUG(2, "/dev/%s tried to complete an open for transid %ld, "
|
||||
"forging a close", NAME(fusd_dev), msg->parm.fops_msg.transid);
|
||||
@ -776,7 +751,7 @@ static void fusd_forge_close(fusd_msg_t *msg, fusd_dev_t *fusd_dev)
|
||||
* NOTE - we are already holding the lock on fusd_file_arg when this
|
||||
* function is called, but NOT the lock on the fusd_dev
|
||||
*/
|
||||
static int fusd_fops_call_send(fusd_file_t *fusd_file_arg,
|
||||
STATIC int fusd_fops_call_send(fusd_file_t *fusd_file_arg,
|
||||
fusd_msg_t *fusd_msg, struct fusd_transaction **transaction)
|
||||
{
|
||||
fusd_dev_t *fusd_dev;
|
||||
@ -850,7 +825,7 @@ invalid_file:
|
||||
* NOTE - we are already holding the lock on fusd_file_arg when this
|
||||
* function is called, but NOT the lock on the fusd_dev
|
||||
*/
|
||||
static int fusd_fops_call_wait(fusd_file_t *fusd_file_arg,
|
||||
STATIC int fusd_fops_call_wait(fusd_file_t *fusd_file_arg,
|
||||
fusd_msg_t **fusd_msg_reply, struct fusd_transaction *transaction)
|
||||
{
|
||||
fusd_dev_t *fusd_dev;
|
||||
@ -956,6 +931,16 @@ zombie_dev:
|
||||
return -EPIPE;
|
||||
}
|
||||
|
||||
/* fusd client system call handlers should call this after they call
|
||||
* fops_call, to destroy the message that was returned to them. */
|
||||
STATIC void fusd_transaction_done(struct fusd_transaction *transaction)
|
||||
{
|
||||
transaction->transid = -1;
|
||||
transaction->pid = 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/********* Functions for opening a FUSD device *******************/
|
||||
|
||||
|
||||
@ -1097,7 +1082,7 @@ int fusd_dev_add_file(struct file *file, fusd_dev_t *fusd_dev, fusd_file_t **fus
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct fusd_dev_t_s *find_user_device(int dev_id)
|
||||
STATIC struct fusd_dev_t_s *find_user_device(int dev_id)
|
||||
{
|
||||
struct list_head *entry;
|
||||
down(&fusd_devlist_sem);
|
||||
@ -1118,7 +1103,7 @@ static struct fusd_dev_t_s *find_user_device(int dev_id)
|
||||
* A client has called open() has been called on a registered device.
|
||||
* See comment higher up for detailed notes on this function.
|
||||
*/
|
||||
static int fusd_client_open(struct inode *inode, struct file *file)
|
||||
STATIC int fusd_client_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
int retval;
|
||||
int device_freed = 0;
|
||||
@ -1203,7 +1188,7 @@ static int fusd_client_open(struct inode *inode, struct file *file)
|
||||
|
||||
/* close() has been called on a registered device. like
|
||||
* fusd_client_open, we must lock the entire device. */
|
||||
static int fusd_client_release(struct inode *inode, struct file *file)
|
||||
STATIC int fusd_client_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
int retval;
|
||||
fusd_file_t *fusd_file;
|
||||
@ -1244,7 +1229,7 @@ invalid_file:
|
||||
return -EPIPE;
|
||||
}
|
||||
|
||||
static ssize_t fusd_client_read(struct file *file, char *buf,
|
||||
STATIC ssize_t fusd_client_read(struct file *file, char *buf,
|
||||
size_t count, loff_t *offset)
|
||||
{
|
||||
fusd_dev_t *fusd_dev;
|
||||
@ -1341,7 +1326,7 @@ zombie_dev:
|
||||
return -EPIPE;
|
||||
}
|
||||
|
||||
static int fusd_add_transaction(fusd_file_t *fusd_file, int transid, int subcmd, int size,
|
||||
STATIC int fusd_add_transaction(fusd_file_t *fusd_file, int transid, int subcmd, int size,
|
||||
struct fusd_transaction **out_transaction)
|
||||
{
|
||||
struct fusd_transaction *transaction = (struct fusd_transaction *) KMALLOC(sizeof(struct fusd_transaction),
|
||||
@ -1365,13 +1350,13 @@ static int fusd_add_transaction(fusd_file_t *fusd_file, int transid, int subcmd,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void fusd_cleanup_transaction(fusd_file_t *fusd_file, struct fusd_transaction *transaction)
|
||||
STATIC void fusd_cleanup_transaction(fusd_file_t *fusd_file, struct fusd_transaction *transaction)
|
||||
{
|
||||
free_fusd_msg(&transaction->msg_in);
|
||||
fusd_remove_transaction(fusd_file, transaction);
|
||||
}
|
||||
|
||||
static void fusd_remove_transaction(fusd_file_t *fusd_file, struct fusd_transaction *transaction)
|
||||
STATIC void fusd_remove_transaction(fusd_file_t *fusd_file, struct fusd_transaction *transaction)
|
||||
{
|
||||
down(&fusd_file->transactions_sem);
|
||||
list_del(&transaction->list);
|
||||
@ -1380,7 +1365,7 @@ static void fusd_remove_transaction(fusd_file_t *fusd_file, struct fusd_transact
|
||||
KFREE(transaction);
|
||||
}
|
||||
|
||||
static struct fusd_transaction *fusd_find_transaction(fusd_file_t *fusd_file, int transid)
|
||||
STATIC struct fusd_transaction *fusd_find_transaction(fusd_file_t *fusd_file, int transid)
|
||||
{
|
||||
struct list_head *i;
|
||||
down(&fusd_file->transactions_sem);
|
||||
@ -1398,7 +1383,7 @@ static struct fusd_transaction *fusd_find_transaction(fusd_file_t *fusd_file, in
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static struct fusd_transaction *fusd_find_transaction_by_pid(fusd_file_t *fusd_file, int pid)
|
||||
STATIC struct fusd_transaction *fusd_find_transaction_by_pid(fusd_file_t *fusd_file, int pid)
|
||||
{
|
||||
struct list_head *i;
|
||||
down(&fusd_file->transactions_sem);
|
||||
@ -1416,7 +1401,7 @@ static struct fusd_transaction *fusd_find_transaction_by_pid(fusd_file_t *fusd_f
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static ssize_t fusd_client_write(struct file *file,
|
||||
STATIC ssize_t fusd_client_write(struct file *file,
|
||||
const char *buffer,
|
||||
size_t length,
|
||||
loff_t *offset)
|
||||
@ -1514,10 +1499,10 @@ zombie_dev:
|
||||
}
|
||||
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static int fusd_client_ioctl(struct inode *inode, struct file *file,
|
||||
STATIC int fusd_client_ioctl(struct inode *inode, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
#else
|
||||
static long fusd_client_unlocked_ioctl (struct file *file,
|
||||
STATIC long fusd_client_unlocked_ioctl (struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
#endif
|
||||
{
|
||||
@ -1614,14 +1599,15 @@ static void fusd_client_mm_open(struct vm_area_struct *vma);
|
||||
|
||||
static void fusd_client_mm_close(struct vm_area_struct *vma);
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0)
|
||||
static vm_fault_t fusd_client_fault (struct vm_fault *vmf);
|
||||
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
|
||||
/* int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf); */
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
|
||||
static int fusd_client_fault (struct vm_fault *vmf);
|
||||
#elif LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 30)
|
||||
static int fusd_client_fault (struct vm_area_struct *vma, struct vm_fault *vmf);
|
||||
#else
|
||||
|
||||
static int fusd_client_fault(struct vm_area_struct *vma, struct vm_fault *vmf, int *type);
|
||||
|
||||
#endif
|
||||
|
||||
static struct vm_operations_struct fusd_remap_vm_ops = {
|
||||
@ -1735,9 +1721,7 @@ zombie_dev:
|
||||
return -EPIPE;
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0)
|
||||
static vm_fault_t fusd_client_fault (struct vm_fault *vmf)
|
||||
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
|
||||
static int fusd_client_fault (struct vm_fault *vmf)
|
||||
#elif LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 30)
|
||||
static int fusd_client_fault (struct vm_area_struct *vma, struct vm_fault *vmf)
|
||||
@ -1811,7 +1795,7 @@ out:
|
||||
* cached from the driver.
|
||||
*
|
||||
*/
|
||||
static unsigned int fusd_client_poll(struct file *file, poll_table *wait)
|
||||
STATIC unsigned int fusd_client_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
fusd_dev_t *fusd_dev;
|
||||
fusd_file_t *fusd_file;
|
||||
@ -1888,7 +1872,7 @@ invalid_file:
|
||||
}
|
||||
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static struct file_operations fusd_client_fops = {
|
||||
STATIC struct file_operations fusd_client_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fusd_client_open,
|
||||
.release = fusd_client_release,
|
||||
@ -1899,7 +1883,7 @@ static struct file_operations fusd_client_fops = {
|
||||
.mmap = fusd_client_mmap
|
||||
};
|
||||
#else
|
||||
static struct file_operations fusd_client_fops = {
|
||||
STATIC struct file_operations fusd_client_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fusd_client_open,
|
||||
.release = fusd_client_release,
|
||||
@ -1916,7 +1900,7 @@ static struct file_operations fusd_client_fops = {
|
||||
/*************************************************************************/
|
||||
|
||||
|
||||
static fusd_file_t *find_fusd_reply_file(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
STATIC fusd_file_t *find_fusd_reply_file(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
{
|
||||
/* first, try the hint */
|
||||
int i = msg->parm.fops_msg.hint;
|
||||
@ -1941,7 +1925,7 @@ static fusd_file_t *find_fusd_reply_file(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
/* Process an incoming reply to a message dispatched by
|
||||
* fusd_fops_call. Called by fusd_write when a driver writes to
|
||||
* /dev/fusd. */
|
||||
static int fusd_fops_reply(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
STATIC int fusd_fops_reply(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
{
|
||||
fusd_file_t *fusd_file;
|
||||
struct fusd_transaction *transaction;
|
||||
@ -1990,7 +1974,7 @@ discard:
|
||||
}
|
||||
|
||||
/* special function to process responses to POLL_DIFF */
|
||||
static int fusd_polldiff_reply(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
STATIC int fusd_polldiff_reply(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
{
|
||||
fusd_file_t *fusd_file;
|
||||
|
||||
@ -2017,7 +2001,13 @@ static int fusd_polldiff_reply(fusd_dev_t *fusd_dev, fusd_msg_t *msg)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int fusd_register_device(fusd_dev_t *fusd_dev,
|
||||
STATIC int systest(struct super_block *sb, void *data)
|
||||
{
|
||||
return 1;
|
||||
|
||||
}
|
||||
|
||||
STATIC int fusd_register_device(fusd_dev_t *fusd_dev,
|
||||
register_msg_t register_msg)
|
||||
{
|
||||
int error = 0;
|
||||
@ -2144,7 +2134,7 @@ register_failed:
|
||||
/****************************************************************************/
|
||||
|
||||
/* open() called on /dev/fusd itself */
|
||||
static int fusd_open(struct inode *inode, struct file *file)
|
||||
STATIC int fusd_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
fusd_dev_t *fusd_dev = NULL;
|
||||
fusd_file_t **file_array = NULL;
|
||||
@ -2189,7 +2179,7 @@ dev_malloc_failed:
|
||||
|
||||
/* close() called on /dev/fusd itself. destroy the device that
|
||||
* was registered by it, if any. */
|
||||
static int fusd_release(struct inode *inode, struct file *file)
|
||||
STATIC int fusd_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
fusd_dev_t *fusd_dev;
|
||||
|
||||
@ -2248,7 +2238,7 @@ invalid_dev:
|
||||
* This function processes messages coming from userspace device drivers
|
||||
* (i.e., writes to the /dev/fusd control channel.)
|
||||
*/
|
||||
static ssize_t fusd_process_write(struct file *file,
|
||||
STATIC ssize_t fusd_process_write(struct file *file,
|
||||
const char *user_msg_buffer, size_t user_msg_len,
|
||||
const char *user_data_buffer, size_t user_data_len)
|
||||
{
|
||||
@ -2396,7 +2386,7 @@ invalid_dev:
|
||||
return -EPIPE;
|
||||
}
|
||||
|
||||
static ssize_t fusd_write(struct file *file,
|
||||
STATIC ssize_t fusd_write(struct file *file,
|
||||
const char *buffer,
|
||||
size_t length,
|
||||
loff_t *offset)
|
||||
@ -2406,7 +2396,7 @@ static ssize_t fusd_write(struct file *file,
|
||||
}
|
||||
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static ssize_t fusd_writev(struct file *file,
|
||||
STATIC ssize_t fusd_writev(struct file *file,
|
||||
const struct iovec *iov,
|
||||
unsigned long count,
|
||||
loff_t *offset)
|
||||
@ -2424,7 +2414,7 @@ static ssize_t fusd_writev(struct file *file,
|
||||
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0)
|
||||
ssize_t fusd_write_iter (struct kiocb *iocb, struct iov_iter *iov)
|
||||
{
|
||||
// unsigned long count = iov_iter_count(iov);
|
||||
unsigned long count = iov_iter_count(iov);
|
||||
char *msg, *data;
|
||||
size_t msg_len, data_len;
|
||||
|
||||
@ -2447,7 +2437,7 @@ ssize_t fusd_write_iter (struct kiocb *iocb, struct iov_iter *iov)
|
||||
data, data_len);
|
||||
}
|
||||
#else
|
||||
static ssize_t fusd_aio_write (struct kiocb *iocb,
|
||||
STATIC ssize_t fusd_aio_write (struct kiocb *iocb,
|
||||
const struct iovec *iov,
|
||||
unsigned long count,
|
||||
loff_t offset)
|
||||
@ -2465,10 +2455,10 @@ static ssize_t fusd_aio_write (struct kiocb *iocb,
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static int fusd_ioctl(struct inode *inode, struct file *file,
|
||||
STATIC int fusd_ioctl(struct inode *inode, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
#else
|
||||
static long fusd_unlocked_ioctl (struct file *file,
|
||||
STATIC long fusd_unlocked_ioctl (struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
#endif
|
||||
{
|
||||
@ -2538,7 +2528,7 @@ static long fusd_unlocked_ioctl (struct file *file,
|
||||
* message queue.) */
|
||||
|
||||
/* do a "header" read: used by fusd_read */
|
||||
static int fusd_read_header(char *user_buffer, size_t user_length, fusd_msg_t *msg)
|
||||
STATIC int fusd_read_header(char *user_buffer, size_t user_length, fusd_msg_t *msg)
|
||||
{
|
||||
int len = sizeof(fusd_msg_t);
|
||||
|
||||
@ -2554,7 +2544,7 @@ static int fusd_read_header(char *user_buffer, size_t user_length, fusd_msg_t *m
|
||||
}
|
||||
|
||||
/* do a "data" read: used by fusd_read */
|
||||
static int fusd_read_data(char *user_buffer, size_t user_length, fusd_msg_t *msg)
|
||||
STATIC int fusd_read_data(char *user_buffer, size_t user_length, fusd_msg_t *msg)
|
||||
{
|
||||
int len = msg->datalen;
|
||||
|
||||
@ -2578,7 +2568,7 @@ static int fusd_read_data(char *user_buffer, size_t user_length, fusd_msg_t *msg
|
||||
return len;
|
||||
}
|
||||
|
||||
static ssize_t fusd_read(struct file *file,
|
||||
STATIC ssize_t fusd_read(struct file *file,
|
||||
char *user_buffer, /* The buffer to fill with data */
|
||||
size_t user_length, /* The length of the buffer */
|
||||
loff_t *offset) /* Our offset in the file */
|
||||
@ -2661,7 +2651,7 @@ invalid_dev:
|
||||
}
|
||||
|
||||
/* a poll on /dev/fusd itself (the control channel) */
|
||||
static unsigned int fusd_poll(struct file *file, poll_table *wait)
|
||||
STATIC unsigned int fusd_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
fusd_dev_t *fusd_dev;
|
||||
GET_FUSD_DEV(file->private_data, fusd_dev);
|
||||
@ -2677,7 +2667,7 @@ invalid_dev:
|
||||
}
|
||||
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static struct file_operations fusd_fops = {
|
||||
STATIC struct file_operations fusd_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fusd_open,
|
||||
.read = fusd_read,
|
||||
@ -2688,7 +2678,7 @@ static struct file_operations fusd_fops = {
|
||||
.poll = fusd_poll,
|
||||
};
|
||||
#else
|
||||
static struct file_operations fusd_fops = {
|
||||
STATIC struct file_operations fusd_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fusd_open,
|
||||
.read = fusd_read,
|
||||
@ -2716,7 +2706,7 @@ typedef struct fusd_status_state {
|
||||
} fusd_statcontext_t;
|
||||
|
||||
/* open() called on /dev/fusd/status */
|
||||
static int fusd_status_open(struct inode *inode, struct file *file)
|
||||
STATIC int fusd_status_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
int error = 0;
|
||||
fusd_statcontext_t *fs;
|
||||
@ -2740,7 +2730,7 @@ out:
|
||||
}
|
||||
|
||||
/* close on /dev/fusd_status */
|
||||
static int fusd_status_release(struct inode *inode, struct file *file)
|
||||
STATIC int fusd_status_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
fusd_statcontext_t *fs = (fusd_statcontext_t *) file->private_data;
|
||||
|
||||
@ -2756,10 +2746,10 @@ static int fusd_status_release(struct inode *inode, struct file *file)
|
||||
|
||||
/* ioctl() on /dev/fusd/status */
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static int fusd_status_ioctl(struct inode *inode, struct file *file,
|
||||
STATIC int fusd_status_ioctl(struct inode *inode, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
#else
|
||||
static long fusd_status_unlocked_ioctl (struct file *file,
|
||||
STATIC long fusd_status_unlocked_ioctl (struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
#endif
|
||||
{
|
||||
@ -2790,7 +2780,7 @@ static long fusd_status_unlocked_ioctl (struct file *file,
|
||||
* If there isn't at least space_needed difference between buf_size
|
||||
* and len, the existing contents are moved into a larger buffer.
|
||||
*/
|
||||
static int maybe_expand_buffer(char **buf, int *buf_size, int len,
|
||||
STATIC int maybe_expand_buffer(char **buf, int *buf_size, int len,
|
||||
int space_needed)
|
||||
{
|
||||
if (*buf_size - len < space_needed) {
|
||||
@ -2811,7 +2801,7 @@ static int maybe_expand_buffer(char **buf, int *buf_size, int len,
|
||||
}
|
||||
|
||||
/* Build a text buffer containing current fusd status. */
|
||||
static void fusd_status_build_text(fusd_statcontext_t *fs)
|
||||
STATIC void fusd_status_build_text(fusd_statcontext_t *fs)
|
||||
{
|
||||
int buf_size = 512;
|
||||
char *buf = KMALLOC(buf_size, GFP_KERNEL);
|
||||
@ -2866,7 +2856,7 @@ out:
|
||||
}
|
||||
|
||||
/* Build the binary version of status */
|
||||
static void fusd_status_build_binary(fusd_statcontext_t *fs)
|
||||
STATIC void fusd_status_build_binary(fusd_statcontext_t *fs)
|
||||
{
|
||||
int buf_size = 512;
|
||||
char *buf = KMALLOC(buf_size, GFP_KERNEL);
|
||||
@ -2917,7 +2907,7 @@ out:
|
||||
fs->need_new_status = 0;
|
||||
}
|
||||
|
||||
static ssize_t fusd_status_read(struct file *file,
|
||||
STATIC ssize_t fusd_status_read(struct file *file,
|
||||
char *user_buffer, /* The buffer to fill with data */
|
||||
size_t user_length, /* The length of the buffer */
|
||||
loff_t *offset) /* Our offset in the file */
|
||||
@ -2960,7 +2950,7 @@ static ssize_t fusd_status_read(struct file *file,
|
||||
}
|
||||
|
||||
/* a poll on /dev/fusd itself (the control channel) */
|
||||
static unsigned int fusd_status_poll(struct file *file, poll_table *wait)
|
||||
STATIC unsigned int fusd_status_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
fusd_statcontext_t *fs = (fusd_statcontext_t *) file->private_data;
|
||||
|
||||
@ -2973,7 +2963,7 @@ static unsigned int fusd_status_poll(struct file *file, poll_table *wait)
|
||||
}
|
||||
|
||||
#ifndef HAVE_UNLOCKED_IOCTL
|
||||
static struct file_operations fusd_status_fops = {
|
||||
STATIC struct file_operations fusd_status_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fusd_status_open,
|
||||
.ioctl = fusd_status_ioctl,
|
||||
@ -2982,7 +2972,7 @@ static struct file_operations fusd_status_fops = {
|
||||
.poll = fusd_status_poll,
|
||||
};
|
||||
#else
|
||||
static struct file_operations fusd_status_fops = {
|
||||
STATIC struct file_operations fusd_status_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fusd_status_open,
|
||||
.unlocked_ioctl = fusd_status_unlocked_ioctl,
|
||||
@ -2995,7 +2985,7 @@ static struct file_operations fusd_status_fops = {
|
||||
/*************************************************************************/
|
||||
|
||||
|
||||
static int init_fusd(void)
|
||||
STATIC int init_fusd(void)
|
||||
{
|
||||
int retval;
|
||||
|
||||
@ -3106,7 +3096,7 @@ fail0:
|
||||
return retval;
|
||||
}
|
||||
|
||||
static void cleanup_fusd(void)
|
||||
STATIC void cleanup_fusd(void)
|
||||
{
|
||||
RDEBUG(1, "cleaning up");
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user