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seccomp.sh: Try to account for terminal width while formatting list of system calls

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Avoid excess lines on wide terminals, but make sure we don't fail if
we can't fetch the number of columns for any reason, as it's not a
fundamental feature and we don't want to break anything with it.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2024-08-27 08:23:41 +02:00
parent e0be6bc2f4
commit 712ca32353
1 changed files with 4 additions and 1 deletions
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5
seccomp.sh
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@ -242,7 +242,10 @@ for __p in ${__profiles}; do
__calls="$(sed -n 's/[\t ]*\*[\t ]*#syscalls\(:'"${__p}"'\|\)[\t ]\{1,\}\(.*\)/\2/p' ${IN})"
__calls="${__calls} ${EXTRA_SYSCALLS:-}"
__calls="$(filter ${__calls})"
echo "seccomp profile ${__p} allows: ${__calls}" | tr '\n' ' ' | fmt -t
cols="$(stty -a | sed -n 's/.*columns \([0-9]*\).*/\1/p' || :)" 2>/dev/null
case $cols in [0-9]*) col_args="-w ${cols}";; *) col_args="";; esac
echo "seccomp profile ${__p} allows: ${__calls}" | tr '\n' ' ' | fmt -t ${col_args}
# Pad here to keep gen_profile() "simple"
__count=0