Commit | Line | Data |
---|---|---|
9143c6d5 | 1 | #!/bin/bash |
b7cdc182 | 2 | # SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9143c6d5 MJ |
3 | |
4 | set -eu | |
5 | ||
6 | outfile="${1:-}" | |
7 | ||
8 | if [ "x$outfile" = "x" ]; then | |
9 | echo "Specify an output file as first argument, it will be overwritten." | |
10 | exit 1 | |
11 | fi | |
12 | ||
13 | cd lttng-syscalls-extractor || exit 1 | |
14 | make | |
15 | cd - || exit 1 | |
16 | ||
17 | # Generate a random string to use as an identifier | |
18 | ident=$(tr -dc 'a-zA-Z0-9' < /dev/urandom | fold -w 8 | head -n1) | |
19 | ||
20 | sudo insmod ./lttng-syscalls-extractor/lttng-syscalls-extractor.ko ident="$ident" || true | |
21 | ||
22 | sudo dmesg | sed -n -e 's/\(\[.*\] \)\?'"$ident"'//p' > "$outfile" | |
23 | ||
24 | # Make sure we have both the start and end markers | |
25 | if grep -q -- '---START---' "$outfile"; then | |
26 | sed -i '/^---START---/d' "$outfile" | |
27 | else | |
28 | echo "Error: Start marker missing from dmesg output, your kernel log buffer is probably too small, set CONFIG_LOG_BUF_SHIFT to a bigger value." | |
29 | exit 1 | |
30 | fi | |
31 | ||
32 | if grep -q -- '---END---' "$outfile"; then | |
33 | sed -i '/^---END---/d' "$outfile" | |
34 | else | |
35 | echo "Error: End marker missing from dmesg output, something went wrong." | |
36 | exit 1 | |
37 | fi |