accc7e7521
This patch removes the notion of partial writes from the file-system servers. Since write operations are asynchronously submitted, they are expected to succeed completely, except for I/O errors. I/O errors are propagated with the write acknowledgement but those are usually handled out of band at the client side. Partial writes must never occur because they would go undetected by clients, which usually don't wait for the completion of each single write operation. Until now, most file-system servers returned the number of written bytes in the acknowledgement packet. If a server managed to write a part of the request only, it issued the acknowledgement immediately where it should have cared about writing the remaining part first. The patch detects such misbehaving server-side code. If partial writes unexpectedly occur, it prints a message and leaves the corresponding request unacknowdleged. Issue #2672
171 lines
3.8 KiB
Tcl
171 lines
3.8 KiB
Tcl
#
|
|
# \brief Test for using the libc_vfs plugin with a file system server
|
|
# \author Christian Prochaska
|
|
# \date 2017-06-13
|
|
#
|
|
|
|
set use_sd_card_drv [expr [have_spec omap4] || [have_spec arndale] || [have_spec pl180]]
|
|
set use_ahci_drv [expr [have_spec x86] && ![have_spec linux]]
|
|
set use_ram_blk [have_spec linux]
|
|
set mkfs [check_installed $mkfs_cmd]
|
|
|
|
if {[have_spec odroid_xu]} {
|
|
puts "Run script does not support this platform"; exit }
|
|
|
|
#
|
|
# Build
|
|
#
|
|
|
|
set build_components {
|
|
core init
|
|
drivers/timer
|
|
test/libc_vfs
|
|
}
|
|
|
|
lappend build_components $build_component
|
|
|
|
lappend_if $use_ahci_drv build_components drivers/ahci
|
|
lappend_if $use_sd_card_drv build_components drivers/sd_card
|
|
lappend_if $use_ram_blk build_components server/ram_blk
|
|
|
|
source ${genode_dir}/repos/base/run/platform_drv.inc
|
|
append_platform_drv_build_components
|
|
|
|
build $build_components
|
|
create_boot_directory
|
|
|
|
#
|
|
# Generate config
|
|
#
|
|
|
|
set config {
|
|
<config>
|
|
<parent-provides>
|
|
<service name="ROM"/>
|
|
<service name="IRQ"/>
|
|
<service name="IO_MEM"/>
|
|
<service name="IO_PORT"/>
|
|
<service name="PD"/>
|
|
<service name="RM"/>
|
|
<service name="CPU"/>
|
|
<service name="LOG"/>
|
|
</parent-provides>
|
|
<default-route>
|
|
<any-service> <parent/> <any-child/> </any-service>
|
|
</default-route>
|
|
<default caps="100"/>
|
|
<start name="timer">
|
|
<resource name="RAM" quantum="1M"/>
|
|
<provides> <service name="Timer"/> </provides>
|
|
</start>
|
|
<start name="fs">}
|
|
append config "
|
|
<binary name=\"$binary\"/>"
|
|
append config {
|
|
<resource name="RAM" quantum="4M"/>
|
|
<provides> <service name="File_system"/> </provides>
|
|
<config>
|
|
<default-policy root="/" writeable="yes" />
|
|
<vfs>
|
|
<dir name="dev">
|
|
<log/>}
|
|
append config " $vfs_dev_blkdev"
|
|
append config {
|
|
</dir>
|
|
</vfs>
|
|
<libc stdout="/dev/log" stderr="/dev/log" />
|
|
</config>
|
|
</start>
|
|
<start name="test-libc_vfs">
|
|
<resource name="RAM" quantum="4M"/>
|
|
<config>
|
|
<libc stdout="/dev/log"/>
|
|
<vfs>
|
|
<dir name="dev"> <log/> </dir>
|
|
<fs/>
|
|
</vfs>
|
|
</config>
|
|
</start>}
|
|
|
|
append_platform_drv_config
|
|
|
|
append_if $use_ahci_drv config {
|
|
<start name="ahci_drv">
|
|
<resource name="RAM" quantum="2M"/>
|
|
<provides> <service name="Block"/> </provides>
|
|
<config>
|
|
<policy label_prefix="fs" device="0" writeable="yes" />
|
|
</config>
|
|
</start>
|
|
}
|
|
|
|
append_if $use_sd_card_drv config {
|
|
<start name="sd_card_drv">
|
|
<resource name="RAM" quantum="1M" />
|
|
<provides><service name="Block"/></provides>
|
|
</start>
|
|
}
|
|
|
|
append_if $use_ram_blk config {
|
|
<start name="ram_blk">
|
|
<resource name="RAM" quantum="128M" />
|
|
<provides><service name="Block"/></provides>
|
|
<config file="test.hda" block_size="512"/>
|
|
</start>}
|
|
|
|
append config {
|
|
</config>
|
|
}
|
|
|
|
install_config $config
|
|
|
|
#
|
|
# Boot modules
|
|
#
|
|
|
|
# generic modules
|
|
set boot_modules {
|
|
core init timer
|
|
ld.lib.so libc.lib.so libm.lib.so posix.lib.so
|
|
test-libc_vfs
|
|
}
|
|
|
|
lappend boot_modules $binary
|
|
|
|
lappend_if $use_ahci_drv boot_modules ahci_drv
|
|
lappend_if $use_sd_card_drv boot_modules sd_card_drv
|
|
lappend_if $use_ram_blk boot_modules ram_blk
|
|
lappend_if $use_ram_blk boot_modules test.hda
|
|
|
|
append_platform_drv_boot_modules
|
|
|
|
build_boot_image $boot_modules
|
|
|
|
#
|
|
# Execute test case
|
|
#
|
|
|
|
set disk_image "bin/test.hda"
|
|
set cmd "dd if=/dev/zero of=$disk_image bs=1024 count=65536"
|
|
puts "creating disk image: $cmd"
|
|
catch { exec sh -c $cmd }
|
|
|
|
set cmd "$mkfs $mkfs_opts $disk_image"
|
|
puts "formating disk image: $cmd"
|
|
catch { exec sh -c $cmd }
|
|
|
|
#
|
|
# Qemu
|
|
#
|
|
append qemu_args " -nographic "
|
|
append_if $use_ahci_drv qemu_args " -drive id=disk,file=$disk_image,format=raw,if=none -device ahci,id=ahci -device ide-drive,drive=disk,bus=ahci.0 -boot d"
|
|
append_if $use_sd_card_drv qemu_args " -drive file=$disk_image,format=raw,if=sd,cache=writeback "
|
|
|
|
run_genode_until {.*child "test-libc_vfs" exited with exit value 0.*} 120
|
|
|
|
exec rm -f $disk_image
|
|
|
|
puts "\nTest succeeded\n"
|
|
|
|
# vi: set ft=tcl :
|