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Diffstat (limited to 'print.html')
| -rw-r--r-- | print.html | 29 |
1 files changed, 25 insertions, 4 deletions
@@ -1904,10 +1904,16 @@ which its expression is valid. main () at test.c:10 10 set(&s, 2); +# Define the watchpoint on the location of the object to watch. + +(gdb) watch -l s->v + +# This is equivalent to the following. + (gdb) p &s->v $1 = (int *) 0x7fffffffe594 -# Define a watchpoint o the address of the member variable of the s instance. +# Define a watchpoint to the address of the member variable of the s instance. # This of course only makes sense as long as the s instance is not moved in memory. (gdb) watch *0x7fffffffe594 @@ -1948,18 +1954,24 @@ executed. To workaround that bug one can create a wrapper function which calls opts: --disable-randomization --no-disable-randomization + --wrapper W -- comm: host:port tty </code></pre> -<h1 id="example-4"><a class="header" href="#example-4">Example</a></h1> +<h2 id="example-4"><a class="header" href="#example-4">Example</a></h2> <pre><code class="language-markdown"># Start gdbserver. gdbserver localhost:1234 /bin/ls # Attach gdb. gdb -ex 'target remote localhost:1234' </code></pre> +<h2 id="wrapper-example-set-environment-variables-just-for-the-debugee"><a class="header" href="#wrapper-example-set-environment-variables-just-for-the-debugee">Wrapper example: Set environment variables just for the debugee</a></h2> +<p>Set <code>env</code> as execution wrapper with some variables. +The wrapper will be executed before the debugee.</p> +<pre><code class="language-markdown">gdbserver --wrapper env FOO=123 BAR=321 -- :12345 /bin/ls +</code></pre> <div style="break-before: page; page-break-before: always;"></div><h1 id="radare21"><a class="header" href="#radare21">radare2(1)</a></h1> <h2 id="print"><a class="header" href="#print">print</a></h2> <pre><code class="language-markdown"> @@ -2396,6 +2408,12 @@ digraph { <h2 id="ipv4-tcp-connections-in-established-state"><a class="header" href="#ipv4-tcp-connections-in-established-state">IPv4 TCP connections in <code>ESTABLISHED</code> state</a></h2> <pre><code class="language-markdown">lsof -i 4TCP -s TCP:ESTABLISHED </code></pre> +<h2 id="list-open-files-in-a-mounted-directory"><a class="header" href="#list-open-files-in-a-mounted-directory">List open files in a mounted directory.</a></h2> +<p>This may help to find which processes keep devices busy when trying to unmount +and the device is currently busy.</p> +<pre><code class="language-markdown"># Assuming /proc is a mount point. +lsof /proc +</code></pre> <div style="break-before: page; page-break-before: always;"></div><h1 id="ss8"><a class="header" href="#ss8">ss(8)</a></h1> <pre><code class="language-markdown">ss [option] [filter] </code></pre> @@ -4978,6 +4996,8 @@ zpool status active host and <code>imported</code> on the new host.</p> <pre><code class="language-bash"># Export a pool called MOOSE. zpool export moose +# If datasets are busy, use lsof to check which processes keep it busy. +# lsof <mntpoint> # List pools that can be imported using BY-ID deivce names (for example). zpool import -d /dev/disk/by-id @@ -5014,11 +5034,12 @@ zfs unmount moose/foo </code></pre> <h3 id="encrypted-datasets"><a class="header" href="#encrypted-datasets">Encrypted datasets</a></h3> <p>Encryption is a readonly property, can only be set when creating a dataset.</p> -<pre><code class="language-bash"># Create encrypted dataset ENC on pool MOOSE. +<pre><code class="language-bash"># Create encrypted dataset FOO on pool MOOSE. zfs create -o encryption=on -o keyformat=passphrase moose/foo -# Mount encrypte dataset (if key is not loaded). +# Mount encrypte dataset and load encryption key (if not loaded). zfs mount -l moose/foo +# -l is equivalent to first loading the key via zfs load-key moose/foo. # Unmount dataset and unload encryption key (unload is optional). zfs umount -u moose/foo |