36 files changed, 478 insertions, 312 deletions
diff --git a/www/.markdownlint.json b/www/.markdownlint.json
new file mode 100644
index 0000000..12bc65e
--- /dev/null
+++ b/www/.markdownlint.json
@@ -0,0 +1,5 @@
+{
+  "$schema": "https://raw.githubusercontent.com/DavidAnson/markdownlint/main/schema/markdownlint-config-schema.json",
+  "default": true,
+  "MD013": false
+}
diff --git a/www/.markdownlintrc b/www/.markdownlintrc
deleted file mode 100644
index 22879bc..0000000
--- a/www/.markdownlintrc
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "default": true
-}
-
diff --git a/www/assets/res/css/article.css b/www/assets/res/css/article.css
index 9629597..93f86ef 100644
--- a/www/assets/res/css/article.css
+++ b/www/assets/res/css/article.css
@@ -2,9 +2,6 @@
   font-size: 0.95em;
   padding-inline: 0.5em;
   padding-block: 0.5em;
-  margin-block-end: 0.5em;
-  border-radius: 3px;
-  background-color: hsl(33, 100%, 98%);
 
   & > p {
     font-size: 0.9em;
@@ -20,8 +17,8 @@
 
   & > .date {
     font-size: small;
+    margin-top: 0.3em;
     float: right;
-    margin-inline-end: 1.5em;
     color: hsl(0, 0%, 25%);
   }
 
@@ -40,3 +37,8 @@ html[data-theme="dark"]  {
     }
   }
 }
+
+hr.article-preview-hr {
+  border: none;
+  border-top: 1.5px dashed currentColor;
+}
diff --git a/www/assets/res/css/base.css b/www/assets/res/css/base.css
index c628271..77cd804 100644
--- a/www/assets/res/css/base.css
+++ b/www/assets/res/css/base.css
@@ -20,6 +20,12 @@ body {
   background-color: var(--body-bg-color);
 }
 
+/* https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/Heading_Elements#specifying_a_uniform_font_size_for_h1 */
+h1 {
+  margin-block: 0.67em;
+  font-size: 2em;
+}
+
 .mono {
   font-family: monospace;
 }
@@ -39,7 +45,7 @@ table  {
   border-collapse: collapse;
 
   &, :is(td,th) {
-    padding: 0.4em;
+    padding: 0.2em 0.4em;
     border: 1px solid var(--table-border-color);
   }
 }
@@ -70,19 +76,6 @@ nav {
   font-size: large;
 }
 
-#slogan {
-  color: white;
-  width: 100%;
-  padding: 0.5em 1em;
-  text-align: center;
-  background-color: dodgerblue;
-  user-select: none;
-
-  & > * {
-    user-select: text;
-  }
-}
-
 #main-article {
   position: relative;
   left: 50%;
@@ -147,9 +140,4 @@ html[data-theme="dark"] {
   & a:visited {
     color:#abcac4;
   }
-
-  & #slogan {
-    color: var(--body-fg-color);
-    background-color: midnightblue;
-  }
 }
diff --git a/www/assets/res/css/home.css b/www/assets/res/css/home.css
index 3df42ff..60c9ac7 100644
--- a/www/assets/res/css/home.css
+++ b/www/assets/res/css/home.css
@@ -1,9 +1,3 @@
-#slogan {
-  position: sticky;
-  z-index: 1;
-  top: 0;
-}
-
 #avatar {
   float: right;
 }
diff --git a/www/assets/res/css/single.css b/www/assets/res/css/single.css
index 70325d1..3d8ee0f 100644
--- a/www/assets/res/css/single.css
+++ b/www/assets/res/css/single.css
@@ -10,11 +10,3 @@
     margin-inline-end: auto;
   }
 }
-
-.end-hr {
-  border: none;
-  width: 8em;
-  margin-block-start: 1.5em;
-  margin-inline-start: 0;
-  border-top: 1px dashed black;
-}
diff --git a/www/assets/res/css/todos.css b/www/assets/res/css/todos.css
index e9a595d..f9aa23b 100644
--- a/www/assets/res/css/todos.css
+++ b/www/assets/res/css/todos.css
@@ -1,14 +1,17 @@
-.todo {
-
+h3.todo {
   &::before {
-    font-family: monospace;
+    font-size: small;
   }
 
   &.working::before {
-    content: "* ";
+    content: "(working) ";
   }
 
   &.done::before {
-    content: "✓ ";
+    content: "(done) ";
+  }
+
+  &.give-up::before {
+    content: "(give up) ";
   }
-}
-\ No newline at end of file
+}
diff --git a/www/assets/res/js/color-scheme.ts b/www/assets/res/js/color-scheme.ts
index db6a3aa..fb4accf 100644
--- a/www/assets/res/js/color-scheme.ts
+++ b/www/assets/res/js/color-scheme.ts
@@ -90,21 +90,3 @@ function next(): Scheme | null {
     }
   }
 }
-
-window.addEventListener("load", () => {
-  const slogon = document.getElementById("slogan")!
-  let clicks: number = 0
-
-  const reset = createResetTimer(() => {
-    clicks = 0
-  })
-
-  slogon.addEventListener("click", () => {
-    reset()
-    clicks += 1
-    if (clicks === 3) {
-      saveScheme(next())
-      clicks = 0
-    }
-  })
-})
diff --git a/www/config/_default/hugo.yaml b/www/config/_default/hugo.yaml
index b913177..289b0b4 100644
--- a/www/config/_default/hugo.yaml
+++ b/www/config/_default/hugo.yaml
@@ -18,6 +18,10 @@ frontmatter:
 
 markup:
   goldmark:
+    parser:
+      attribute:
+        block: true
+        title: true
     extensions:
       table: true
   highlight:
diff --git a/www/content/hurd/_index.md b/www/content/hurd/_index.md
deleted file mode 100644
index b4c727c..0000000
--- a/www/content/hurd/_index.md
+++ /dev/null
@@ -1,182 +0,0 @@
----
-title: "Hurd"
-date: 2025-03-03T15:34:41+08:00
-lastmod: 2025-03-03T23:28:46+08:00
-layout: single
----
-
-{{< mono >}}
-
-[TODOS](/hurd/todos)
-
-{{< /mono >}}
-
-## links
-
-{{< mono >}}
-
-| name | link |
-| --- | --- |
-| kernel-list-archive | <https://lists.gnu.org/archive/html/bug-hurd/> |
-| debian-list-archive | <https://lists.debian.org/debian-hurd/> |
-| irc-archive | <https://logs.guix.gnu.org/hurd/> |
-| kernel-home | <https://www.gnu.org/software/hurd/index.html> |
-| debian-home | <https://www.debian.org/ports/hurd/> |
-
-{{< /mono >}}
-
-refs:
-
-{{< mono >}}
-
-| name | link |
-| --- | --- |
-| c | <https://en.cppreference.com/w/c> |
-| posix latest | <https://pubs.opengroup.org/onlinepubs/9799919799/> |
-| posix 2013 | <https://pubs.opengroup.org/onlinepubs/9699919799.2013edition/> |
-| posix 2008 | <https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/> |
-| glibc | <https://sourceware.org/glibc/manual/2.41/html_mono/libc.html> |
-
-{{< /mono >}}
-
-## *_MAX patch
-
-TODO: Move to separate page.
-
-```c
-#include <errno.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-static inline char *xreadlink(const char *restrict path) {
-  char *buffer;
-  size_t allocated = 128;
-  ssize_t len;
-
-  while (1) {
-    buffer = (char *)malloc(allocated);
-    if (!buffer) {
-      return NULL;
-    }
-    len = readlink(path, buffer, allocated);
-    if (len < (ssize_t)allocated) {
-      return buffer;
-    }
-    free(buffer);
-    if (len >= (ssize_t)allocated) {
-      allocated *= 2;
-      continue;
-    }
-    return NULL;
-  }
-}
-
-static inline char *xgethostname() {
-  long max_host_name;
-  char *buffer;
-
-  max_host_name = sysconf(_SC_HOST_NAME_MAX);
-  buffer = malloc(max_host_name + 1);
-
-  if (gethostname(buffer, max_host_name + 1)) {
-    free(buffer);
-    return NULL;
-  }
-
-  buffer[max_host_name] = '\0';
-  return buffer;
-}
-
-static inline char *xgetcwd() {
-  char *buffer;
-  size_t allocated = 128;
-
-  while (1) {
-    buffer = (char *)malloc(allocated);
-    if (!buffer) {
-      return NULL;
-    }
-    getcwd(buffer, allocated);
-    if (buffer)
-      return buffer;
-    free(buffer);
-    if (errno == ERANGE) {
-      allocated *= 2;
-      continue;
-    }
-    return NULL;
-  }
-}
-```
-
-## git repos
-
-{{< link-group >}}
-hurd
-cru: <https://crupest.life/git/cru-hurd/hurd.git>
-upstream: <https://git.savannah.gnu.org/git/hurd/hurd.git>
-debian: <https://salsa.debian.org/hurd-team/hurd>
-{{< /link-group >}}
-
-{{< link-group >}}
-gnumach
-cru: <https://crupest.life/git/cru-hurd/gnumach.git>
-upstream: <https://git.savannah.gnu.org/git/hurd/gnumach.git>
-debian: <https://salsa.debian.org/hurd-team/gnumach>
-{{< /link-group >}}
-
-{{< link-group >}}
-mig
-cru: <https://crupest.life/git/cru-hurd/mig.git>
-upstream: <https://git.savannah.gnu.org/git/hurd/mig.git>
-debian: <https://salsa.debian.org/hurd-team/mig>
-{{< /link-group >}}
-
-{{< link-group >}}
-glibc
-cru: <https://crupest.life/git/cru-hurd/glibc.git>
-upstream: <git://sourceware.org/git/glibc.git>
-debian: <https://salsa.debian.org/glibc-team/glibc>
-mirror: <https://mirrors.tuna.tsinghua.edu.cn/git/glibc.git>
-{{< /link-group >}}
-
-{{< link-group >}}
-web
-cru: <https://crupest.life/git/cru-hurd/web.git>
-upstream: <https://git.savannah.gnu.org/git/hurd/web.git>
-{{< /link-group >}}
-
-## cheatsheet
-
-Start qemu
-
-```sh
-qemu-system-x86_64 -enable-kvm -m 4G -net nic -net user,hostfwd=tcp::3222-:22 -vga vmware -drive cache=writeback,file=[...]
-```
-
-Configure/Setup network
-
-```sh
-settrans -fgap /servers/socket/2 /hurd/pfinet -i /dev/eth0 -a 10.0.2.15 -g 10.0.2.2 -m 255.255.255.0
-fsysopts /servers/socket/2 /hurd/pfinet -i /dev/eth0 -a 10.0.2.15 -g 10.0.2.2 -m 255.255.255.0
-fsysopts /server/socket/2 -a 10.0.2.15 -g 10.0.2.2 -m 255.255.255.0
-```
-
-Setup apt
-
-```sh
-apt-get --allow-unauthenticated --allow-insecure-repositories update
-apt-get --allow-unauthenticated upgrade
-```
-
-## mailing lists / irc
-
-{{< mono >}}
-
-| name | address |
-| --- | --- |
-| hurd | <bug-hurd@gnu.org> |
-| debian | <debian-hurd@lists.debian.org> |
-| irc | librechat #hurd |
-
-{{< /mono >}}
diff --git a/www/content/notes/_index.md b/www/content/notes/_index.md
new file mode 100644
index 0000000..3f96f73
--- /dev/null
+++ b/www/content/notes/_index.md
@@ -0,0 +1,16 @@
+---
+title: "Notes"
+date: 2025-06-14T21:24:00+08:00
+lastmod: 2025-06-14T21:24:00+08:00
+layout: single
+---
+
+- [Cheat Sheet](/notes/cheat-sheet)
+
+- [Hurd](/notes/hurd)
+
+  - [Cheat Sheet](/notes/hurd/cheat-sheet)
+
+  - [Todos](/notes/hurd/todos)
+
+  - [Useful Links](/notes/hurd/links)
diff --git a/www/content/notes/cheat-sheet.md b/www/content/notes/cheat-sheet.md
new file mode 100644
index 0000000..2f30140
--- /dev/null
+++ b/www/content/notes/cheat-sheet.md
@@ -0,0 +1,129 @@
+---
+title: "Cheat Sheet"
+date: 2025-04-01T23:09:53+08:00
+lastmod: 2025-06-12T01:09:39+08:00
+---
+
+goto: [Hurd Cheat Sheet (in a separated page)](/notes/hurd/cheat-sheet)
+{class="mono"}
+
+## GRUB
+
+Update GRUB after `grub` package is updated. Replace `/boot` with your mount
+point of the EFI partition in `--efi-directory=/boot`. Replace `GRUB` with your
+bootloader id in `--bootloader-id=GRUB`.
+
+```sh
+grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB
+grub-mkconfig -o /boot/grub/grub.cfg
+```
+
+## (Private) My Service Infrastructure Management
+
+All commands should be run at the project root path.
+
+### Install Deno
+
+Script from <https://docs.deno.com/runtime/getting_started/installation/>
+
+```sh
+curl -fsSL https://deno.land/install.sh | sh
+```
+
+### Add Git Server User / Set Password
+
+```sh
+docker run -it --rm -v "./data/git/user-info:/user-info" httpd htpasswd /user-info [username]
+```
+
+### Certbot
+
+A complete command is `[prefix] [docker (based on challenge kind)] [command] [challenge] [domains] [test] [misc]`
+
+| part | for | segment |
+| :-: | :-: | --- |
+| prefix | * | `docker run -it --rm --name certbot -v "./data/certbot/certs:/etc/letsencrypt" -v "./data/certbot/data:/var/lib/letsencrypt"` |
+| docker | challenge standalone | `-p "0.0.0.0:80:80"` |
+| docker | challenge nginx | `-v "./data/certbot/webroot:/var/www/certbot"` |
+| command | create/expand/shrink | `certonly` |
+| command | renew | `renew` |
+| challenge | standalone | `--standalone` |
+| challenge | nginx | `--webroot -w /var/www/certbot` |
+| domains | * | `[-d [domain]]...` |
+| test | * | `--test-cert --dry-run` |
+| misc | agree tos | `--agree-tos` |
+| misc | cert name | `--cert-name [name]` |
+| misc | email | `--email [email]` |
+
+For example, **test** create/expand/shrink with standalone server:
+
+```sh
+docker run -it --rm --name certbot \
+  -v "./data/certbot/certs:/etc/letsencrypt" -v "./data/certbot/data:/var/lib/letsencrypt"` \
+  -p "0.0.0.0:80:80" \
+  certonly \
+  --standalone \
+  -d crupest.life -d mail.crupest.life \
+  --test-cert --dry-run
+```
+
+## System Setup
+
+### Debian setup
+
+#### Setup SSL Certificates and Curl
+
+```sh
+apt-get update
+apt-get install ca-certificates curl
+install -m 0755 -d /etc/apt/keyrings
+```
+
+### Docker Setup
+
+#### Uninstall Packages Provided by Stock Repo
+
+```bash
+for pkg in docker.io docker-doc docker-compose \
+    podman-docker containerd runc; do
+  apt-get remove $pkg;
+done
+```
+
+#### Install Certs From Docker
+
+Remember to [setup ssl and curl](#setup-ssl-certificates-and-curl) first.
+
+```sh
+curl -fsSL https://download.docker.com/linux/debian/gpg \
+  -o /etc/apt/keyrings/docker.asc
+chmod a+r /etc/apt/keyrings/docker.asc
+```
+
+#### Add Docker Repos
+
+```bash
+echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] \
+  https://download.docker.com/linux/debian \
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
+  tee /etc/apt/sources.list.d/docker.list > /dev/null
+```
+
+#### Install Docker Packages
+
+```sh
+apt-get update
+apt-get install docker-ce docker-ce-cli containerd.io \
+  docker-buildx-plugin docker-compose-plugin
+```
+
+#### Start And Enable Docker
+
+Remember to log out and log back to let user group change take effects.
+
+```sh
+systemctl enable docker
+systemctl start docker
+groupadd -f docker
+usermod -aG docker $USER
+```
diff --git a/www/content/notes/hurd/_index.md b/www/content/notes/hurd/_index.md
new file mode 100644
index 0000000..8faf70b
--- /dev/null
+++ b/www/content/notes/hurd/_index.md
@@ -0,0 +1,15 @@
+---
+title: "Hurd"
+date: 2025-03-03T15:34:41+08:00
+lastmod: 2025-06-12T01:09:39+08:00
+layout: single
+---
+
+This is the gateway page for various notes about
+[GNU/Hurd](https://www.gnu.org/software/hurd/) written by me.
+
+- [Cheat Sheet](/notes/hurd/cheat-sheet)
+
+- [Todos](/notes/hurd/todos)
+
+- [Useful Links](/notes/hurd/links)
diff --git a/www/content/notes/hurd/cheat-sheet.md b/www/content/notes/hurd/cheat-sheet.md
new file mode 100644
index 0000000..6fe5ccd
--- /dev/null
+++ b/www/content/notes/hurd/cheat-sheet.md
@@ -0,0 +1,68 @@
+---
+title: "Hurd Cheat Sheet"
+date: 2025-06-12T00:59:16+08:00
+lastmod: 2025-06-14T20:34:06+08:00
+---
+
+## Mirrors
+
+The mirror has to be `debian-ports`, not `debian`, and many mirror sites do not
+provide it. Following is aliyun mirror:
+
+```txt
+/etc/apt/sources.list
+---
+deb https://mirrors.aliyun.com/debian-ports/ unstable main
+deb https://mirrors.aliyun.com/debian-ports/ unreleased main
+deb-src https://mirrors.aliyun.com/debian/ unstable main
+```
+
+The hurd-amd64 deb-src seems to not work.
+
+## Use QEMU Virtual Machine
+
+For i386, use
+
+```sh
+qemu-system-x86_64 -enable-kvm -m 4G \
+  -net nic -net user,hostfwd=tcp::3222-:22 \
+  -vga vmware -drive cache=writeback,file=[...]
+```
+
+For x86_64, use
+
+```sh
+qemu-system-x86_64 -enable-kvm -m 8G -machine q35 \
+  -net nic -net user,hostfwd=tcp::3223-:22 \
+  -vga vmware -drive cache=writeback,file=[...]
+```
+
+GRUB in the image seems to use hard-coded path of `/dev/*` block file as the
+root partition in the kernel command line rather than GUID, so if the hard disk
+bus is changed in QEMU and the path is changed accordingly, the system can't
+boot on.
+
+QEMU cli arguments `-machine q35` enables AHCI and SATA, and is **required for
+official x86_64 image to boot**. As for i386, I haven't checked now.
+
+There is [a Deno script](https://github.com/crupest/crupest/blob/dev/deno/tools/manage-vm.ts)
+written by me to help define and build QEMU cli arguments of VMs.
+
+## Inside Hurd
+
+Configure/Setup network
+
+```sh
+settrans -fgap /servers/socket/2 /hurd/pfinet \
+  -i /dev/eth0 -a 10.0.2.15 -g 10.0.2.2 -m 255.255.255.0
+fsysopts /servers/socket/2 /hurd/pfinet \
+  -i /dev/eth0 -a 10.0.2.15 -g 10.0.2.2 -m 255.255.255.0
+fsysopts /server/socket/2 -a 10.0.2.15 -g 10.0.2.2 -m 255.255.255.0
+```
+
+Setup apt
+
+```sh
+apt-get --allow-unauthenticated --allow-insecure-repositories update
+apt-get --allow-unauthenticated upgrade
+```
diff --git a/www/content/notes/hurd/links.md b/www/content/notes/hurd/links.md
new file mode 100644
index 0000000..1e966d4
--- /dev/null
+++ b/www/content/notes/hurd/links.md
@@ -0,0 +1,88 @@
+---
+title: "Hurd Useful Links"
+date: 2025-06-14T20:34:06+08:00
+lastmod: 2025-06-14T20:34:06+08:00
+---
+
+## links
+
+| name | link |
+| --- | --- |
+| kernel-list-archive | <https://lists.gnu.org/archive/html/bug-hurd/> |
+| debian-list-archive | <https://lists.debian.org/debian-hurd/> |
+| irc-archive | <https://logs.guix.gnu.org/hurd/> |
+| kernel-home | <https://www.gnu.org/software/hurd/index.html> |
+| debian-home | <https://www.debian.org/ports/hurd/> |
+
+refs:
+
+| name | link |
+| --- | --- |
+| c | <https://en.cppreference.com/w/c> |
+| posix latest | <https://pubs.opengroup.org/onlinepubs/9799919799/> |
+| posix 2013 | <https://pubs.opengroup.org/onlinepubs/9699919799.2013edition/> |
+| posix 2008 | <https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/> |
+| glibc | <https://sourceware.org/glibc/manual/2.41/html_mono/libc.html> |
+
+## mailing lists / irc
+
+| name | address |
+| --- | --- |
+| hurd | <bug-hurd@gnu.org> |
+| debian | <debian-hurd@lists.debian.org> |
+| irc | librechat #hurd |
+
+## *_MAX patch
+
+See [this](posts/c-func-ext.md)
+
+## git repos
+
+Clone all at once:
+
+```sh
+# glibc is too big, so not clone here.
+for repo in hurd gnumach mig web; do
+  if [ ! -d $repo ]; then
+    git clone "https://crupest.life/git/hurd/$repo.git"
+    pushd $repo
+    git remote add upstream "https://git.savannah.gnu.org/git/hurd/$repo.git"
+    popd
+  fi
+done
+```
+
+{{< link-group >}}
+hurd
+cru: <https://crupest.life/git/hurd/hurd.git>
+upstream: <https://git.savannah.gnu.org/git/hurd/hurd.git>
+debian: <https://salsa.debian.org/hurd-team/hurd>
+{{< /link-group >}}
+
+{{< link-group >}}
+gnumach
+cru: <https://crupest.life/git/hurd/gnumach.git>
+upstream: <https://git.savannah.gnu.org/git/hurd/gnumach.git>
+debian: <https://salsa.debian.org/hurd-team/gnumach>
+{{< /link-group >}}
+
+{{< link-group >}}
+mig
+cru: <https://crupest.life/git/hurd/mig.git>
+upstream: <https://git.savannah.gnu.org/git/hurd/mig.git>
+debian: <https://salsa.debian.org/hurd-team/mig>
+{{< /link-group >}}
+
+{{< link-group >}}
+glibc
+cru: <https://crupest.life/git/hurd/glibc.git>
+upstream: <git://sourceware.org/git/glibc.git>
+debian: <https://salsa.debian.org/glibc-team/glibc>
+mirror: <https://mirrors.tuna.tsinghua.edu.cn/git/glibc.git>
+{{< /link-group >}}
+
+{{< link-group >}}
+web
+cru: <https://crupest.life/git/hurd/web.git>
+upstream: <https://git.savannah.gnu.org/git/hurd/web.git>
+{{< /link-group >}}
diff --git a/www/content/hurd/todos.md b/www/content/notes/hurd/todos.md
index f8273fb..2dbded3 100644
--- a/www/content/hurd/todos.md
+++ b/www/content/notes/hurd/todos.md
@@ -1,7 +1,7 @@
 ---
 title: "Hurd Todos"
 date: 2025-03-03T21:22:35+08:00
-lastmod: 2025-03-03T23:28:46+08:00
+lastmod: 2025-06-14T20:34:06+08:00
 params:
   css:
     - todos
@@ -9,7 +9,11 @@ params:
 
 ## Porting
 
-### {{< todo name=pam state=working >}}
+### hurd-fs4 {class="todo working"}
+
+<https://salsa.debian.org/rust-team/debcargo-conf/-/merge_requests/872>
+
+### pam {class="todo give-up"}
 
 {{< link-group >}}
 git
@@ -23,7 +27,7 @@ mail
 <https://lists.debian.org/debian-hurd/2025/02/msg00018.html>
 {{< /link-group >}}
 
-### {{< todo name=abseil state=working >}}
+### abseil {class="todo working"}
 
 {{< link-group >}}
 git
@@ -38,7 +42,7 @@ mail
 <https://lists.debian.org/debian-hurd/2025/02/msg00035.html>
 {{< /link-group >}}
 
-### {{< todo name=libgav1 state=done >}}
+### libgav1 {class="todo done"}
 
 {{< link-group >}}
 git
diff --git a/www/content/posts/_index.html b/www/content/posts/_index.md
index 76fa783..76fa783 100644
--- a/www/content/posts/_index.html
+++ b/www/content/posts/_index.md
diff --git a/www/content/posts/c-func-ext.md b/www/content/posts/c-func-ext.md
index f5ab8fb..1f5f822 100644
--- a/www/content/posts/c-func-ext.md
+++ b/www/content/posts/c-func-ext.md
@@ -8,16 +8,94 @@ tags:
   - posix
 ---
 
-Recently, I've been working on porting libraries to GNU/Hurd. The maintainers of GNU/Hurd
-have a strong belief that [`*_MAX` macros on POSIX system interfaces](https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/nframe.html)
-are very evil things. This is indeed true as a lot of (old) libraries relying on those macros
-to determine the buffer size. In modern programming world, it is definitely a bad
-idea to use fixed values for buffer sizes without considering possible overflow, unless
-you are certain that size is sufficient.
+(I've given up on this, at least for linux pam.)
 
-When you get rid of some old things, you will always meet compatibility problems. In these
-case, old source codes using these macros just do not compile now. So here are some
+Recently, I’ve been working on porting some libraries to GNU/Hurd. Many (old)
+libraries use [`*_MAX` constants on POSIX system
+interfaces](https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/nframe.html)
+to calculate buffer sizes. However, the GNU/Hurd maintainers urge against the
+blind use of them and refuse to define them in system headers. When old APIs are
+gone, compatibility problems come. To make my life easier, I'll put some
+reusable code snippets here to help *fix `*_MAX` bugs*.
 
 <!--more-->
 
+```c
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
 
+static inline char *xreadlink(const char *restrict path) {
+  char *buffer;
+  size_t allocated = 128;
+  ssize_t len;
+
+  while (1) {
+    buffer = (char*) malloc(allocated);
+    if (!buffer) { return NULL; }
+    len = readlink(path, buffer, allocated);
+    if (len < (ssize_t) allocated) { return buffer; }
+    free(buffer);
+    if (len >= (ssize_t) allocated) { allocated *= 2; continue; }
+    return NULL;
+  }
+ }
+
+
+static inline char *xgethostname(void) {
+  long max_host_name;
+  char *buffer;
+
+  max_host_name = sysconf(_SC_HOST_NAME_MAX);
+  buffer = malloc(max_host_name + 1);
+
+  if (gethostname(buffer, max_host_name + 1)) {
+    free(buffer);
+    return NULL;
+  }
+
+  buffer[max_host_name] = '\0';
+  return buffer;
+}
+
+static inline char *xgetcwd(void) {
+  char *buffer;
+  size_t allocated = 128;
+
+  while (1) {
+    buffer = (char*) malloc(allocated);
+    if (!buffer) { return NULL; }
+    getcwd(buffer, allocated);
+    if (buffer) return buffer;
+    free(buffer);
+    if (errno == ERANGE) { allocated *= 2; continue; }
+    return NULL;
+  }
+}
+
+static inline __attribute__((__format__(__printf__, 2, 3))) int
+xsprintf(char **buf_ptr, const char *restrict format, ...) {
+  char *buffer;
+  int ret;
+
+  va_list args;
+  va_start(args, format);
+
+  ret = snprintf(NULL, 0,  format, args);
+  if (ret < 0) { goto out; }
+
+  buffer = malloc(ret + 1);
+  if (!buffer) { ret = -1; goto out; }
+
+  ret = snprintf(NULL, 0,  format, args);
+  if (ret < 0) { free(buffer); goto out; }
+
+  *buf_ptr = buffer;
+
+out:
+  va_end(args);
+  return ret;
+}
+```
diff --git a/www/content/todos.md b/www/content/todos.md
deleted file mode 100644
index a790e24..0000000
--- a/www/content/todos.md
+++ /dev/null
@@ -1,7 +0,0 @@
----
-title: "Todos"
-date: 2025-03-03T15:34:53+08:00
-lastmod: 2025-03-03T23:28:46+08:00
----
-
-[Hurd](/hurd/todos)
diff --git a/www/layouts/partials/css-res.html b/www/layouts/_partials/css-res.html
index 6fabf67..6fabf67 100644
--- a/www/layouts/partials/css-res.html
+++ b/www/layouts/_partials/css-res.html
diff --git a/www/layouts/partials/css.html b/www/layouts/_partials/css.html
index 12d3353..12d3353 100644
--- a/www/layouts/partials/css.html
+++ b/www/layouts/_partials/css.html
diff --git a/www/layouts/partials/date.html b/www/layouts/_partials/date.html
index 9769e4e..9769e4e 100644
--- a/www/layouts/partials/date.html
+++ b/www/layouts/_partials/date.html
diff --git a/www/layouts/partials/highlight.html b/www/layouts/_partials/highlight.html
index 28c510e..28c510e 100644
--- a/www/layouts/partials/highlight.html
+++ b/www/layouts/_partials/highlight.html
diff --git a/www/layouts/partials/js.html b/www/layouts/_partials/js.html
index 16dafa4..16dafa4 100644
--- a/www/layouts/partials/js.html
+++ b/www/layouts/_partials/js.html
diff --git a/www/layouts/partials/nav.html b/www/layouts/_partials/nav.html
index 42c9ad1..42c9ad1 100644
--- a/www/layouts/partials/nav.html
+++ b/www/layouts/_partials/nav.html
diff --git a/www/layouts/partials/preview/article.html b/www/layouts/_partials/preview/article.html
index 6245434..6245434 100644
--- a/www/layouts/partials/preview/article.html
+++ b/www/layouts/_partials/preview/article.html
diff --git a/www/layouts/partials/preview/post.html b/www/layouts/_partials/preview/post.html
index f0c6fb5..f0c6fb5 100644
--- a/www/layouts/partials/preview/post.html
+++ b/www/layouts/_partials/preview/post.html
diff --git a/www/layouts/_partials/preview/posts.html b/www/layouts/_partials/preview/posts.html
new file mode 100644
index 0000000..291c4b2
--- /dev/null
+++ b/www/layouts/_partials/preview/posts.html
@@ -0,0 +1,13 @@
+{{ $h := .h }}
+{{ $is_first := true}}
+{{ range .pages }}
+  {{ if $is_first }}
+    {{ $is_first = false }}
+  {{ else }}
+    <hr class="article-preview-hr">
+  {{ end }}
+  {{ partial "preview/post.html" (dict
+    "h" $h
+    "page" .)
+  }}
+{{ end }}
+\ No newline at end of file
diff --git a/www/layouts/shortcodes/link-group.html b/www/layouts/_shortcodes/link-group.html
index b16c2bc..b16c2bc 100644
--- a/www/layouts/shortcodes/link-group.html
+++ b/www/layouts/_shortcodes/link-group.html
diff --git a/www/layouts/_default/baseof.html b/www/layouts/baseof.html
index 621aea1..b9cd715 100644
--- a/www/layouts/_default/baseof.html
+++ b/www/layouts/baseof.html
@@ -19,9 +19,6 @@
     {{ end }}
   </head>
   <body>
-    <div id="slogan">
-      <span>🙃The world is full of pain, but we can fix it with love!</span>
-    </div>
     {{ block "pre-article" .}}
     {{ end }}
     <article id="main-article">
@@ -29,6 +26,8 @@
       {{ end }}
       <hr/>
       <footer class="mono-link">
+        {{ block "footer" . }}
+        {{ end }}
         <p id="license">
           <small>This work is licensed under
             <a rel="license noopener noreferrer"
diff --git a/www/layouts/index.html b/www/layouts/home.html
index 7c608f1..38f7604 100644
--- a/www/layouts/index.html
+++ b/www/layouts/home.html
@@ -26,26 +26,26 @@
   <hr />
   <section>
     <p>Welcome to my home page! Nice to meet you here! 🥰</p>
-    <p>If you have something interesting to share with me, feel free to email me at
-      <a rel="noopener noreferrer" href="mailto:crupest@crupest.life">crupest@crupest.life</a>.
-      You can also create an issue in any of my repos on GitHub to talk anything to me.
-    </p>
+    <p>Feel free to contact me via my email address <a href="mailto:crupest@crupest.life">crupest@crupest.life</a>,
+       or just create an issue in any of my <a rel="noopener noreferrer" href="https://github.com/crupest">GitHub</a>
+       repos. I love talking with people a lot.</p>
     <div id="links" class="mono-link">
-      links:
+      goto:
       <ul>
-        <li><a href="{{ .RelPermalink }}">home</a></li>
         <li><a href="{{ absURL "/git/" }}">git</a></li>
-        {{ with .GetPage "/hurd" }}
+        {{ with .GetPage "/notes" }}
+          <li><a href="{{ .RelPermalink }}">notes</a></li>
+        {{ end }}
+        {{ with .GetPage "/notes/hurd" }}
           <li><a href="{{ .RelPermalink }}">hurd</a></li>
         {{ end }}
-        {{ with .GetPage "/todos" }}
-          <li><a href="{{ .RelPermalink }}">todos</a></li>
+        {{ with .GetPage "/notes/cheat-sheet" }}
+          <li><a href="{{ .RelPermalink }}">cheat-sheet</a></li>
         {{ end }}
-          <li><a rel="noopener noreferrer" href="https://github.com/crupest">github</a></li>
-        </ul>
+      </ul>
     </div>
   </section>
-  <hr>
+  <hr/>
   {{ with .GetPage "/posts" }}
     <section id="recent-posts">
       <h2>Recent Posts <a class="mono-link" href="{{ .RelPermalink }}">(all)</a></h2>
@@ -55,7 +55,7 @@
         }}
     </section>
   {{ end }}
-  <hr>
+  <hr/>
   <section>
     <h2 id="friends">My Friends <small>(more links are being collected ...)</small></h2>
     <div id="friends-container">
@@ -75,18 +75,4 @@
       {{ end }}
     </div>
   </section>
-  <hr>
-  <section>
-    <h2>Always Remember</h2>
-    <figure class="citation">
-      <blockquote>
-        <p>Die Philosophen haben die Welt nur verschieden interpretiert, es kömmt aber darauf an, sie zu verändern.</p>
-        <p><small>Translated from German:</small>
-          The philosophers have only interpreted the world in various ways, the point is to change it.</p>
-      </blockquote>
-      <figcaption>
-        <cite>Karl Marx, Theses on Feuerbach (1845)</cite>
-      </figcaption>
-    </figure>
-  </section>
 {{ end }}
diff --git a/www/layouts/_default/list.html b/www/layouts/list.html
index c7c6cce..1d4ec56 100644
--- a/www/layouts/_default/list.html
+++ b/www/layouts/list.html
@@ -4,9 +4,11 @@
 
 {{ define "content" }}
   {{ partial "nav.html" . }}
-  <h1>Posts</h1>
+  <h1>{{ .Title }}</h1>
+  <hr/>
   {{ partial "preview/posts.html" (dict
-    "h" "h3"
-    "pages" (.RegularPages.ByDate.Reverse.Limit 3))
+      "h" "h3"
+      "pages" .RegularPages
+    )
   }}
 {{ end }}
diff --git a/www/layouts/partials/preview/posts.html b/www/layouts/partials/preview/posts.html
deleted file mode 100644
index f2cb640..0000000
--- a/www/layouts/partials/preview/posts.html
+++ /dev/null
@@ -1,7 +0,0 @@
-{{ $h := .h }}
-{{ range .pages }}
-  {{ partial "preview/post.html" (dict
-    "h" $h
-    "page" .)
-  }}
-{{ end }}
-\ No newline at end of file
diff --git a/www/layouts/shortcodes/mono.html b/www/layouts/shortcodes/mono.html
deleted file mode 100644
index ab183a5..0000000
--- a/www/layouts/shortcodes/mono.html
+++ /dev/null
@@ -1,3 +0,0 @@
-<div class="mono-container">
-  {{ .Inner | .Page.RenderString }}
-</div>
diff --git a/www/layouts/shortcodes/todo.html b/www/layouts/shortcodes/todo.html
deleted file mode 100644
index 1327b31..0000000
--- a/www/layouts/shortcodes/todo.html
+++ /dev/null
@@ -1 +0,0 @@
-<span class="todo {{ .Get "state" }}">{{ .Get "name" }}</span>
-\ No newline at end of file
diff --git a/www/layouts/_default/single.html b/www/layouts/single.html
index cd0e9c5..33360b4 100644
--- a/www/layouts/_default/single.html
+++ b/www/layouts/single.html
@@ -18,6 +18,8 @@
     {{ end}}
   </p>
   {{ .Content }}
-  <hr class="end-hr"/>
-  {{ partial "nav.html" . }}
 {{ end }}
+
+{{ define "footer" }}
+  {{ partial "nav.html" . }}
+{{ end }}
+\ No newline at end of file