w3c_val...selinux(8)

💅 NAME 💅

okay bestie, welcome to the w3c_val...selinux(8) page — manual name w3c_validator_script — and it’s literally all about the Security Enhanced Linux Policy for the w3c_validator_script processes, aka w3c_validator_script_selinux. periodt. 🫶

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the w3c_validator_script processes via flexible mandatory access control. no cap, that’s the whole security vibe. 💅

The w3c_validator_script processes execute with the w3c_validator_script_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep w3c_validator_script_t

🚪 ENTRYPOINTS 🚪

The w3c_validator_script_t SELinux type can be entered via the w3c_validator_script_exec_t file type.

The default entrypoint paths for the w3c_validator_script_t domain are the following:

/usr/share/w3c-markup-validator/cgi-bin(/.*)?, /usr/lib/cgi-bin/check

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. You can see the context of a process using the -Z option to ps. 🔍

Policy governs the access confined processes have to files. The SELinux w3c_validator_script policy is very flexible, allowing users to set up their w3c_validator_script processes in as secure a method as possible.

The following process types are defined for w3c_validator_script:

• w3c_validator_script_t

Note: semanage permissive -a w3c_validator_script_t can be used to make the process type w3c_validator_script_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. bestie, read that twice — permissive does not mean denials disappear from the chat. 😭

🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. The w3c_validator_script policy is extremely flexible and has several booleans that allow you to manipulate the policy and run w3c_validator_script with the tightest access possible.

• fips_mode — if you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default. setsebool -P fips_mode 1
• httpd_enable_cgi — if you want to allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Enabled by default. setsebool -P httpd_enable_cgi 1
• nis_enabled — if you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default. setsebool -P nis_enabled 1
• nscd_use_shm — if you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Enabled by default. setsebool -P nscd_use_shm 1

📂 MANAGED FILES 📂

The SELinux process type w3c_validator_script_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions. 🔐

• w3c_validator_rw_content_t
• w3c_validator_tmp_t

🦋 FILE CONTEXTS 🦋

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls. 👀

Policy governs the access confined processes have to these files. The SELinux w3c_validator_script policy is very flexible, allowing users to set up their w3c_validator_script processes in as secure a method as possible.

🌈 STANDARD FILE CONTEXT 🌈

SELinux defines the file context types for w3c_validator_script. If you wanted to store files with these types in different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk.

semanage fcontext -a -t w3c_validator_script_exec_t '/srv/w3c_validator_script/content(/.*)?'
restorecon -R -v /srv/myw3c_validator_script_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise. 🧚

The following file types are defined for w3c_validator_script:

• w3c_validator_script_exec_t — set files with the w3c_validator_script_exec_t type if you want to transition an executable to the w3c_validator_script_t domain.

Paths: /usr/share/w3c-markup-validator/cgi-bin(/.*)?, /usr/lib/cgi-bin/check

Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels. 💖

🧰 COMMANDS 🧰

• semanage fcontext can also be used to manipulate default file context mappings.
• semanage permissive can also be used to manipulate whether or not a process type is permissive.
• semanage module can also be used to enable/disable/install/remove policy modules.
• semanage boolean can also be used to manipulate the booleans.
• system-config-selinux is a GUI tool available to customize SELinux policy settings.

💖 AUTHOR 💖

This manual page was auto-generated using sepolicy manpage . ✨

🔗 SEE ALSO 🔗

selinux(8), w3c_validator_script(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)

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and that’s the whole page, bestie 🎀 the footer signs off with w3c_validator_script, dated 26-10-06, and tagged w3c_val...selinux(8) — iconic, no notes. 💖✨