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# Put test-related bits that are parted-specific here.
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# This file is sourced from the testing framework.
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sector_size_=${PARTED_SECTOR_SIZE:-512}
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scsi_debug_lock_dir_="$abs_srcdir/scsi_debug.lock"
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require_scsi_debug_module_()
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require_udevadm_settle_
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# check for scsi_debug module
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modprobe -n scsi_debug ||
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skip_ "you lack the scsi_debug kernel module"
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scsi_debug_modprobe_succeeded_=
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# Always run this cleanup function.
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cleanup_final_() { scsi_debug_cleanup_; }
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# This function must always release the lock.
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# If modprobe succeeded, it must be sure to run rmmod.
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if test -n "$scsi_debug_modprobe_succeeded_"; then
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# We have to insist. Otherwise, a single rmmod usually fails to remove it,
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# due either to "Resource temporarily unavailable" or to
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# "Module scsi_debug is in use".
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while [ $i -lt 10 ] ; do
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&& { test "$VERBOSE" = yes && warn_ $ME_ rmmod scsi_debug...; break; }
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rm -fr $scsi_debug_lock_dir_
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# Helper function: wait 2s (via .1s increments) for FILE to appear.
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# Usage: wait_for_dev_to_appear_ /dev/sdg
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# Return 0 upon success, 1 upon failure.
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wait_for_dev_to_appear_()
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ls "$file" > /dev/null 2>&1 && return 0
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sleep .1 2>/dev/null || { sleep 1; incr=10; }
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i=$(expr $i + $incr); test $i = 20 && break
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# Tests that uses "modprobe scsi_debug ..." must not be run in parallel.
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scsi_debug_acquire_lock_()
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local lock_timeout_stale_seconds=120
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# If it was created more than $lock_timeout_stale_seconds ago, remove it.
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# FIXME: implement this
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mkdir "$scsi_debug_lock_dir_" && return 0
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sleep .1 2>/dev/null || { sleep 1; incr=10; }
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i=$(expr $i + $incr); test $i = $(expr $retries \* 10) && break
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warn_ "$ME_: failed to acquire lock: $scsi_debug_lock_dir_"
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# If there is a scsi_debug device, print the corresponding "sdN" and return 0.
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# Otherwise, return 1.
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local m; m=$(grep -lw scsi_debug /sys/block/sd*/device/model) || return 1
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# Remove the /sys/block/ prefix, and then the /device/model suffix.
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# Create a device using the scsi_debug module with the options passed to
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# this function as arguments. Upon success, print the name of the new device.
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scsi_debug_acquire_lock_
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# It is not trivial to determine the name of the device we're creating.
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# Record the names of all /sys/block/sd* devices *before* probing:
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modprobe scsi_debug "$@" || { rm -f stamp; return 1; }
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scsi_debug_modprobe_succeeded_=1
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test "$VERBOSE" = yes \
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&& warn_ $ME_ modprobe scsi_debug succeeded
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# Wait up to 2s (via .1s increments) for the list of devices to change.
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# Sleeping for a fraction of a second requires GNU sleep, so fall
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# back on sleeping 2x1s if that fails.
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# FIXME-portability: using "cmp - ..." probably requires GNU cmp.
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new_dev=$(new_sdX_) && break
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sleep .1 2>/dev/null || { sleep 1; incr=10; }
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i=$(expr $i + $incr); test $i = 20 && break
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*) warn_ $ME_ unexpected device name: $new_dev; return 1 ;;
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local t=/dev/$new_dev
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wait_for_dev_to_appear_ $t
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require_512_byte_sector_size_()
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test $sector_size_ = 512 \
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|| skip_ FS test with sector size != 512
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case $# in 2) ;; *) echo "usage: peek_ FILE 0_BASED_OFFSET" >&2; exit 1;; esac
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case $2 in *[^0-9]*) echo "peek_: invalid offset: $2" >&2; exit 1 ;; esac
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dd if="$1" bs=1 skip="$2" count=1
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case $# in 3) ;; *) echo "usage: poke_ FILE 0_BASED_OFFSET BYTE" >&2; exit 1;;
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case $2 in *[^0-9]*) echo "poke_: invalid offset: $2" >&2; exit 1 ;; esac
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case $3 in ?) ;; *) echo "poke_: invalid byte: '$3'" >&2; exit 1 ;; esac
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printf %s "$3" | dd of="$1" bs=1 seek="$2" count=1 conv=notrunc
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# byte 56 of the partition entry is the first byte of its 72-byte name field
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gpt1_pte_name_offset_()
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case $ss in *[^0-9]*) echo "$0: invalid sector size: $ss">&2; return 1;; esac
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# Change the name of the first partition in the primary GPT table,
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# thus invalidating the PartitionEntryArrayCRC32 checksum.
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gpt_corrupt_primary_table_()
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case $# in 2) ;; *) echo "$0: expected 2 args, got $#" >&2; return 1;; esac
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case $ss in *[^0-9]*) echo "$0: invalid sector size: $ss">&2; return 1;; esac
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# get the first byte of the name
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local orig_pte_name_byte
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orig_pte_name_byte=$(peek_ $dev $(gpt1_pte_name_offset_ $ss)) || return 1
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test x"$orig_pte_name_byte" = xA && new_byte=B || new_byte=A
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# Replace with a different byte
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poke_ $dev $(gpt1_pte_name_offset_ $ss) "$new_byte" || return 1
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printf %s "$orig_pte_name_byte"
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gpt_restore_primary_table_()
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case $# in 3) ;; *) echo "$0: expected 2 args, got $#" >&2; return 1;; esac
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case $ss in *[^0-9]*) echo "$0: invalid sector size: $ss">&2; return 1;; esac
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poke_ $dev $(gpt1_pte_name_offset_ $ss) "$orig_byte" || return 1
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. "$abs_top_srcdir/tests/t-lvm.sh"
added
removed
tests/t-local.sh
