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Add iflag=fullblock to dd #355

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Merged
megastep merged 4 commits into from
Jan 13, 2026
Merged

Add iflag=fullblock to dd #355

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e8ee761
Add iflag=fullblock to dd
svlv Jan 12, 2026
bdc0e9c
Add check for iflag=fullblock
svlv Jan 12, 2026
f37330b
Merge branch 'master' into add-fullblock
megastep Jan 13, 2026
086f615
Initialize the iflag variable with an empty string
svlv Jan 13, 2026
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7 changes: 6 additions & 1 deletion makeself-header.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -107,8 +107,13 @@ MS_dd()
bytes=\`expr \$3 % 1024\`
# Test for ibs, obs and conv feature
if dd if=/dev/zero of=/dev/null count=1 ibs=512 obs=512 conv=sync 2> /dev/null; then
iflag=""
# Test for fullblock feature
if dd if=/dev/zero of=/dev/null count=1 iflag=fullblock 2> /dev/null; then
iflag="iflag=fullblock"
fi
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megastep marked this conversation as resolved.
dd if="\$1" ibs=\$2 skip=1 obs=1024 conv=sync 2> /dev/null | \\
{ test \$blocks -gt 0 && dd ibs=1024 obs=1024 count=\$blocks ; \\
{ test \$blocks -gt 0 && dd ibs=1024 obs=1024 count=\$blocks \$iflag ; \\
test \$bytes -gt 0 && dd ibs=1 obs=1024 count=\$bytes ; } 2> /dev/null
else
dd if="\$1" bs=\$2 skip=1 2> /dev/null
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