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Diffstat (limited to 'doc/bin')
| -rw-r--r-- | doc/bin/compile-db.html | 98 | ||||
| -rw-r--r-- | doc/bin/longrun-make.html | 141 | ||||
| -rw-r--r-- | doc/bin/oneshot-make.html | 101 | ||||
| -rw-r--r-- | doc/bin/prepare-svscan.html | 120 | ||||
| -rw-r--r-- | doc/bin/system-db.html | 67 | ||||
| -rw-r--r-- | doc/bin/system-ml.html | 96 | ||||
| -rw-r--r-- | doc/bin/system-rc.html | 63 | ||||
| -rw-r--r-- | doc/bin/system-run.html | 67 | ||||
| -rw-r--r-- | doc/bin/system-shutdown-daemon.html | 123 | ||||
| -rw-r--r-- | doc/bin/user-db.html | 82 | ||||
| -rw-r--r-- | doc/bin/user-init.html | 128 | ||||
| -rw-r--r-- | doc/bin/user-ml.html | 104 | ||||
| -rw-r--r-- | doc/bin/user-rc.html | 74 | ||||
| -rw-r--r-- | doc/bin/user-run.html | 78 | ||||
| -rw-r--r-- | doc/bin/user-shutdown.html | 68 | ||||
| -rw-r--r-- | doc/bin/user-tmpfs.html | 104 |
16 files changed, 1514 insertions, 0 deletions
diff --git a/doc/bin/compile-db.html b/doc/bin/compile-db.html new file mode 100644 index 0000000..c0ed957 --- /dev/null +++ b/doc/bin/compile-db.html @@ -0,0 +1,98 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>compile-db</title> + <meta name="Description" content="A helper script for compiling s6-rc databases." /> + <meta name="Keywords" content="goetia s6-rc s6-rc-compile source directory" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The compile-db program</h1> + <p> + compile-db is a helper script for use by other software + that compiles a general <code><em>confdir</em></code> + tries to use the result to update a general + <code><em>livedir</em></code>. + </p> + <h2>Interface</h2> + <pre> compile-db <em>confdir</em> <em>livedir</em></pre> + <ul> + <li> + compile-db runs + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html">s6-rc-compile</a> + on <code><em>confdir</em>/src/*</code>. + </li> + <li> + This creates a new <code><em>confdir</em>/<var>@xyz@</var>_db</code> + file with <code><var>@xyz@</var></code> based on the current UNIX time. + </li> + <li> + If <code><em>livedir</em></code> exists, that is, + a goetia based supervision tree is running, + compile-db the tries to update the live state at <code><em>livedir</em></code> + to <code><var>@xyz@</var>_db</code> using + <a href="https://skarnet.org/software/s6-rc/s6-rc-update.html">s6-rc-update</a>. + </li> + <li> + If it succeeds, it updates the symlink + <code><em>confdir</em>/compiled</code> + to point to + <code><em>confdir</em>/<var>@xyz@</var>_db</code> + and deletes the old database + <code><em>confdir</em>/<var>@abc@</var>_db</code>. + </li> + <li> + If it does <em>not</em> succeed, + it runs s6-rc-update to switch back to + <code><em>confdir</em>/compiled</code> + which points to + <code><em>confdir</em>/<var>@abc@</var>_db</code>. + Followed by deleting + <code><em>confdir</em>/<var>@xyz@</var>_db</code>. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 0: success + </li> + <li> + Since compile-db is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + compile-db mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no otions to compile-db. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/longrun-make.html b/doc/bin/longrun-make.html new file mode 100644 index 0000000..0c5d8c4 --- /dev/null +++ b/doc/bin/longrun-make.html @@ -0,0 +1,141 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>longrun-make</title> + <meta name="Description" content="Helper script to generate s6-rc longrun source directories from a commandline." /> + <meta name="Keywords" content="goetia s6-rc longrun source directory" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The longrun-make program</h1> + <p> + longrun-make contains boilerplate code + required to create the + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directory</a> + of a longrun service + based on strings. + </p> + <h2>Interface</h2> + <pre> longrun-make <em>workingdir</em> <em>name</em> <em>type</em> <em>script</em> <em>dependencies</em></pre> + <ul> + <li> + <code><em>type</em></code> can only be one of <code>log | srv</code>. + </li> + <li> + <code><em>dependencies</em></code> can only be one of <code>"dependency1 dependency2 ..." | none</code>. + </li> + <li> + longrun-make creates the directory <code><em>workingdir</em>/<em>name</em>-<em>type</em></code>. + </li> + <li> + It creates the file <code><em>workingdir</em>/<em>name</em>-<em>type</em>/type</code> + (literal "<code>type</code>") and writes the line <code>longrun</code> to it. + </li> + <li> + It creates the file <code><em>workingdir</em>/<em>name</em>-<em>type</em>/notification-fd</code> + and writes the line <code>3</code> to it. + </li> + <li> + It creates the file <code><em>workingdir</em>/<em>name</em>-<em>type</em>/run</code> + and writes <code><em>script</em></code> to it. + </li> + <li> + If <code><em>type</em></code> is <code>log</code> <em>and</em> the file + <code><em>workingdir</em>/<em>name</em>-<em>type</em>/consumer-for</code> + does <em>not</em> contain the string <code><em>name</em></code>: + <ul> + <li> + longrun-make aquires a lock on the file + <code><em>workingdir</em>/<em>name</em>-<em>type</em>/consumer-for</code> + using + <a href="https://skarnet.org/software/s6/s6-setlock.html">s6-setlock</a>. + </li> + <li> + It appends the string <code><em>name</em>-srv</code> to the file + <code><em>workingdir</em>/<em>name</em>-<em>type</em>/consumer-for</code> + creating it if it does not exist. + </li> + <li> + It creates a file <code><em>workingdir</em>/<em>name</em>-<em>type</em>/pipeline-name</code>, + truncating it if it does exist and adds the string <code><em>name</em></code>. + </li> + </ul> + </li> + <li> + If <code><em>type</em></code> is <code>srv</code>: + <ul> + <li> + The file + <code><em>workingdir</em>/<em>name</em>-<em>type</em>/producer-for</code> + is created, truncated and the string <code><em>name</em>-log</code> is added. + </li> + </ul> + </li> + <li> + If <code><em>dependencies</em></code> is not <code>none</code>: + <ul> + <li> + The directory + <code><em>workingdir</em>/<em>name</em>-<em>type</em>/dependencies.d</code> + is created. + </li> + <li> + For each word <code>"dependency1 dependency2 ..."</code> in + <code><em>dependencies</em></code> separated by spaces, + a file + <code><em>workingdir</em>/<em>name</em>-<em>type</em>/dependencies.d/<em>dependency</em></code> + is created. + </li> + </ul> + </li> + </ul> + <p> + longrun-make is, by means of locking and checking for duplicates, + specifically designed to allow parallel creation of logging + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directories</a>. + </p> + <h2>Exit codes</h2> + <ul> + <li> + 0: success + </li> + <li> + Since longrun-make is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + longrun-make mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no otions to longrun-make. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/oneshot-make.html b/doc/bin/oneshot-make.html new file mode 100644 index 0000000..1b285c6 --- /dev/null +++ b/doc/bin/oneshot-make.html @@ -0,0 +1,101 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>oneshot-make</title> + <meta name="Description" content="Helper script to generate s6-rc oneshot source directories from a commandline." /> + <meta name="Keywords" content="goetia s6-rc oneshot source directory" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The oneshot-make program</h1> + <p> + oneshot-make contains boilerplate code + required to create the + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directory</a> + of a oneshot service + based on strings. + </p> + <h2>Interface</h2> + <pre> oneshot-make <em>workingdir</em> <em>name</em> <em>upscript</em> <em>downscript</em> <em>dependencies</em></pre> + <ul> + <li> + <code><em>dependencies</em></code> can only be one of <code>"dependency1 dependency2 ..." | none</code>. + </li> + <li> + oneshot-make creates the directory <code><em>workingdir</em>/<em>name</em></code> + </li> + <li> + it creates the file <code><em>workingdir</em>/<em>name</em>/type</code> + and writes the line <code>oneshot</code> to it. + </li> + <li> + it creates the file <code><em>workingdir</em>/<em>name</em>/up</code> + and writes <code><em>upscript</em></code> to it. + </li> + <li> + it creates the file <code><em>workingdir</em>/<em>name</em>/down</code> + and writes <code><em>downscript</em></code> to it. + </li> + <li> + If <code><em>dependencies</em></code> is not <code>none</code>: + <ul> + <li> + The directory + <code><em>workingdir</em>/<em>name</em>/dependencies.d</code> + is created. + </li> + <li> + For each word <code>"dependency1 dependency2 ..."</code> in + <code><em>dependencies</em></code> separated by spaces, + a file + <code><em>workingdir</em>/<em>name</em>/dependencies.d/<em>dependency</em></code> + is created. + </li> + </ul> + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 0: success + </li> + <li> + Since oneshot-make is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + oneshot-make mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no otions to oneshot-make. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/prepare-svscan.html b/doc/bin/prepare-svscan.html new file mode 100644 index 0000000..6b82bd5 --- /dev/null +++ b/doc/bin/prepare-svscan.html @@ -0,0 +1,120 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>prepare-svscan</title> + <meta name="Description" content="Helper script to initialize a supervision tree." /> + <meta name="Keywords" content="goetia s6 s6-rc supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The prepare-svscan program</h1> + <p> + prepare-svscan does generic preparation of the + <a href="//0x53.net/software/goetia/supervisiontree.html">supervision tree</a>. + It is also used in system-init and + <a href="./user-init.html">user-init</a>. + </p> + <h2>Interface</h2> + <pre> prepare-svscan <em>workingdir</em> <em>rundir</em> <em>bundle</em> <em>prog...</em></pre> + <ul> + <li> + prepare-svscan sets its standard input to <code>/dev/null</code>. + </li> + <li> + It sets the umask to <code>0022</code>. + </li> + <li> + It creates the directory <code><em>rundir</em></code>. + </li> + <li> + It copies all contents of <code><em>workingdir</em>/run-image/.</code> + to <code><em>rundir</em>/</code>. + </li> + <li> + It changes its standard output to <code><em>rundir</em>/service/s6-svscan-log/fifo</code>. + </li> + <li> + prepare-svscan then forks a background process that: + <ul> + <li> + waits for a reading end at <code><em>rundir</em>/service/s6-svscan-log/fifo</code>. + </li> + <li> + Once the above is given, if <code><em>rundir</em>/s6-rc</code> does <em>not</em> exist, + </li> + <li> + it initiates <a href="https://skarnet.org/software/s6-rc/">s6-rc</a> on + <code><em>rundir</em>/service</code> using + <a href="https://skarnet.org/software/s6-rc/s6-rc-init.html">s6-rc-init</a> + and starts the bundle <code><em>bundle</em></code> using s6-rc. + </li> + </ul> + </li> + <li> + It copies stderr to stdout. + </li> + <li> + If available, the directory <code><em>workingdir</em>/env</code> is sourced using + <a href="https://skarnet.org/software/s6/s6-envdir.html">s6-env</a>. + </li> + <li> + prepare-svscan executest into <code><em>prog...</em></code>, + which is usually directly or indirectly + <a href="https://skarnet.org/software/s6/s6-svscan.html">s6-svscan</a>. + </li> + </ul> + <p> + Once s6-svscan is launched it will start an + <a href="https://skarnet.org/software/s6/s6-supervise.html">s6-supervise</a> + process on <code><em>rundir</em>/service/s6-svscan-log</code> which starts + <a href="https://skarnet.org/software/s6/s6-log.html">s6-log</a> reading + from <code><em>rundir</em>/service/s6-svscan-log/fifo</code>. + This in turn triggers the forked background process to continue with its second step. + </p> + <h2>Exit codes</h2> + <ul> + <li> + prepare-svscan usually executes into + <a href="https://skarnet.org/software/s6/s6-svscan.html">s6-svscan</a> + which exits according to its page. + </li> + <li> + Since prepare-svscan is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + prepare-svscan mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no otions to prepare-svscan. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/system-db.html b/doc/bin/system-db.html new file mode 100644 index 0000000..056f5b7 --- /dev/null +++ b/doc/bin/system-db.html @@ -0,0 +1,67 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>system-db</title> + <meta name="Description" content="Script to compile the system supervision tree database." /> + <meta name="Keywords" content="goetia compile-db s6-rc s6-rc-compile system supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The system-db program</h1> + <p> + system-db compiles the + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directories</a> + of the + <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a> + into the <em>compiled</em> format. + This format can then be used by init and + <a href="./system-rc.html">system-rc</a> + to set up and control a + <a href="//0x53.net/software/goetia/supervisiontree.html#system">system supervision tree</a>. + </p> + <p> + system-db is a wrapper around the more general + <a href="./compile-db.html">compile-db</a> + making it target the system supervision tree. + </p> + <h2>Interface</h2> + <pre> system-db</pre> + <ul> + <li> + system-db takes no arguments. + </li> + <li> + It runs compile-db supplementing it with the + <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a> + and + <a href="//0x53.net/software/goetia/rundir.html#system">system runtime directory</a>. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + Since system-db is a wrapper around compile-db, it + <a href="./compile-db.html">behaves exactly like it</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no options to system-db. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/system-ml.html b/doc/bin/system-ml.html new file mode 100644 index 0000000..bc487a9 --- /dev/null +++ b/doc/bin/system-ml.html @@ -0,0 +1,96 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>system-ml</title> + <meta name="Description" content="Script to autogenerate loggers for the system supervision tree." /> + <meta name="Keywords" content="goetia longrun-make s6-rc logger log system supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The system-ml program</h1> + <p> + system-ml automatically creates logging service + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directories</a> + for longrun services in the + <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a>. + To create the logging service source directories, + system-ml uses + <a href="./longrun-make.html">longrun-make</a> internally. + </p> + <h2>Interface</h2> + <pre> system-ml</pre> + <ul> + <li> + system-ml takes no arguments. + </li> + <li> + It deletes the <code>src/generated-logger</code> subdirectory of the + <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a>. + </li> + <li> + It scans the <code>src</code> subdirecotry of the + <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a> + for longrun services. + </li> + <li> + It checks for each longrun it detects, + whether its source directory contains a file <code>no-ml</code>. + If this file exits, this longrun is skipped in the subsequent logger generation. + </li> + <li> + It generates a logging service source directory at + <code>src/generated-logger/<var>@longrun@</var>-log</code> + in the <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a>. + It does so in parallel for each longrun <code><var>@longrun@</var>-srv</code> it found. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + Since system-ml is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + system-ml mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no options to system-ml. + </li> + </ul> + <h2>Notes</h2> + <p> + The logger services created by this script + will drop privileges to + <code><var>@loguser@</var></code>, + which must exist at runtime. + (see <a href="//0x53.net/software/goetia/logdir.html">log directory</a>). + </p> + </body> +</html> diff --git a/doc/bin/system-rc.html b/doc/bin/system-rc.html new file mode 100644 index 0000000..f6e48db --- /dev/null +++ b/doc/bin/system-rc.html @@ -0,0 +1,63 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>system-rc</title> + <meta name="Description" content="Convenience wrapper around s6-rc to control the system supervision tree." /> + <meta name="Keywords" content="goetia s6-rc system supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The system-rc program</h1> + <p> + system-rc is a thin convenience wrapper around + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + doing nothing more then pointing it to the right livedir. + </p> + <p> + Read the page of + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + to understand what this utility does. + </p> + <h2>Interface</h2> + <pre> system-rc ... <a href="https://skarnet.org/software/s6-rc/s6-rc.html">see s6-rc</a> ...</pre> + <ul> + <li> + It runs + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + with the appropriate livedir option. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + Since system-rc is a thin wrapper around + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + it behaves almost exactly like it. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + system-rc takes exactly the same options as + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a>. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/system-run.html b/doc/bin/system-run.html new file mode 100644 index 0000000..465cee4 --- /dev/null +++ b/doc/bin/system-run.html @@ -0,0 +1,67 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>system-run</title> + <meta name="Description" content="Run little scripts from the system supervision tree, providing reliability." /> + <meta name="Keywords" content="goetia s6 system supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The system-run program</h1> + <p> + system-run allows + to hand over the execution of commands to the + <a href="//0x53.net/software/goetia/supervisiontree.html#system">system supervision tree</a>. + </p> + <h2>Interface</h2> + <pre> system-run <em>prog...</em></pre> + <ul> + <li> + Internally, system-run invokes + <a href="https://skarnet.org/software/s6/s6-sudo.html">s6-sudo</a> + to connect to an + <a href="https://skarnet.org/software/s6/s6-sudod.html">s6-sudod</a> + instance provided by the system + <a href="//0x53.net/software/goetia/service/system/goetia-runner.html">goetia-runner</a>. + </li> + <li> + <code><em>prog...</em></code> is then transferred + to and executed by goetia-runner. + </li> + <li> + See + <a href="https://skarnet.org/software/s6/s6-sudo.html">s6-sudo</a> + and + <a href="https://skarnet.org/software/s6/s6-sudod.html">s6-sudod</a> + for configuration options and detailed information. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + system-run behaves exactly as + <a href="https://skarnet.org/software/s6/s6-sudo.html">s6-sudo</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + system-run takes the exact same options as + <a href="https://skarnet.org/software/s6/s6-sudoc.html">s6-sudoc</a>. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/system-shutdown-daemon.html b/doc/bin/system-shutdown-daemon.html new file mode 100644 index 0000000..82493b6 --- /dev/null +++ b/doc/bin/system-shutdown-daemon.html @@ -0,0 +1,123 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>system-shutdown-daemon</title> + <meta name="Description" content="The kernel indepentent part of the goetia shutdown procedure." /> + <meta name="Keywords" content="goetia s6 s6-rc system supervision tree shutdown" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The system-shutdown-daemon program</h1> + <p> + system-shutdown-daemon contains the Kernel independent + part of the shutdown sequence. + It is invoked by the Kernel specifict goetia-shutdown service, + e.g. + <a href="//0x53.net/software/goetia/goetia-linux-init/service/system/goetia-shutdown.html">goetia-shutdown service for Linux</a> + or + <a href="//0x53.net/software/goetia/goetia-freebsd-init/service/system/goetia-shutdown.html">goetia-shutdown service for FreeBSD</a>. + system-shutdown-daemon is a long lived program that waits for instruction by the system-shutdown command + The latter is part of the Kernel specific packages, e.g. + <a href="//0x53.net/software/goetia/goetia-linux">goetia-linux</a> + or + <a href="//0x53.net/software/goetia/goetia-freebsd">goetia-freebsd</a>. + </p> + <h2>Interface</h2> + <pre> system-shutdown-daemon</pre> + <ul> + <li> + system-shutdown-daemon takes no arguments. + </li> + <li> + It tries to execute <code>./stage3b</code>, + which is by default not executable. + If it can not execute <code>./stage3b</code>, + and <em>only</em> in this case, + it continues with the following. + </li> + <li> + All services managed by + <a href="https://skarnet.org/software/s6-rc/">s6-rc</a> + are stopped. + This means, all services defined in + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directories</a> + at the <code>src</code> subdirectory of the + <a href="//0x53.net/software/goetia/confdir.html#system">system configuration directory</a>. + </li> + <li> + Next, all leftover services <em>except</em> + s6-svscan-log, goetia-shutdown and goetia-rescue, are stopped. + </li> + <li> + The file <code>stage3b</code>, expected to exist in the current working directory + is made executable. + This file is part of the Kernel secific service directories. + (see e.g. <a href="//0x53.net/software/goetia/goetia-linux-init/service/system/goetia-shutdown.html">goetia-shutdown</a>) + </li> + <li> + all uncaught system logs are copied from the + <code>log/uncaught-logs</code> + subdirectory of the + <a href="//0x53.net/software/goetia/rundir.html#system">system runtime directory</a>. + to the + <code>uncaught-logs</code> + subdirectory of the + <a href="//0x53.net/software/goetia/logdir.html#">system log directory</a>. + </li> + <li> + SIGTERM is sent to all processes but PID 1. + </li> + <li> + This also stops the system-shutdown-daemon process. + It is automatically restarted by the system supervision tree, + but this time, the file <code>./stage3b</code> is executable + and executed instead of what is described above. + What happens in <code>./stage3b</code> is Kernel specific, + and documented on + <a href="//0x53.net/software/goetia/goetia-linux-init/service/goetia-shutdown.html">goetia-shutdown service for Linux</a>, + <a href="//0x53.net/software/goetia/goetia-freebsd-init/service/goetia-shutdown.html">goetia-shutdown service for FreeBSD</a>, + etc. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + Since system-shutdown-daemon is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + system-shutdown-daemon mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no options to system-shutdown-daemon. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/user-db.html b/doc/bin/user-db.html new file mode 100644 index 0000000..26ef310 --- /dev/null +++ b/doc/bin/user-db.html @@ -0,0 +1,82 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-db</title> + <meta name="Description" content="Script to compile the user supervision tree database." /> + <meta name="Keywords" content="goetia compile-db s6-rc user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-db program</h1> + <p> + user-db compiles the + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directories</a> + of the + <a href="//0x53.net/software/goetia/confdir.html#user">user configuration directory</a> + into the <em>compiled</em> format. + This format can then be used by init and + <a href="./user-rc.html">user-rc</a> + to set up and control a + <a href="//0x53.net/software/goetia/supervisiontree.html#user">user supervision tree</a>. + </p> + <p> + user-db is a wrapper around the more general + <a href="./compile-db.html">compile-db</a> + making it target the user supervision tree. + </p> + <h2>Interface</h2> + <pre> user-db</pre> + <ul> + <li> + user-db takes no arguments. + </li> + <li> + It reads the <code>USER</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>USERTREE</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>HOME</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It runs compile-db supplementing it the correct + <a href="//0x53.net/software/goetia/confdir.html#user">user configuration directory</a> + and + <a href="//0x53.net/software/goetia/rundir.html#user">user runtime directory</a>. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 100 if a critical environment variable is missing. + </li> + <li> + Since user-db is a wrapper around compile-db, it + <a href="./compile-db.html">behaves exactly like it</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no options to user-db. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/user-init.html b/doc/bin/user-init.html new file mode 100644 index 0000000..c96c3ae --- /dev/null +++ b/doc/bin/user-init.html @@ -0,0 +1,128 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-init</title> + <meta name="Description" content="Script to initialize a user supervision tree." /> + <meta name="Keywords" content="goetia prepare-svscan s6 s6-rc user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-init program</h1> + <p> + user-init starts a user supervision tree for + the user defined in the <code>USER</code> + environment variable. + </p> + <h2>Interface</h2> + <pre> user-init</pre> + <ul> + <li> + user-init takes no arguments. + </li> + <li> + It reads the <code>USER</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>USERTREE</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>BUNDLE</code> environment variable, + defaulting to <code>default</code> if empty. + </li> + <li> + It reads the <code>PATH</code> environment variable, + defaulting to + <code>/command:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/libexec:/usr/local/libexec</code> + if empty. + </li> + <li> + if <code>${USER}/${USERTREE}</code> subdirectory of the + <a href="//0x53.net/software/goetia/rundir.html">runtime directory</a> + olready existis, it exits 100. + </li> + <li> + It sets the <code>HOME</code> environment variable based on the result of + <a href="https://skarnet.org/software/execline/homeof.html">homeof</a>. + </li> + <li> + It prepends <code>${HOME}/.local/bin:</code> to the <code>PATH</code> + environment variable. + </li> + <li> + It sets the <code>UID</code>, <code>GID</code> and <code>GIDLIST</code> + environment variables using + <a href="https://skarnet.org/software/s6/s6-envuidgid.html">s6-envuidgid</a>. + </li> + <li> + It runs + <code><a href="./prepare-svscan.html">prepare-svscan</a></code> + with the proper arguments. + </li> + <li> + Finally, it executes into + <code><a href="https://skarnet.org/software/s6/s6-svscan.html">s6-svscan</a></code> + on the scandir represented by the + <code>${USER}/${USERTREE}/service</code> + subdirectory of the + <a href="//0x53.net/software/goetia/rundir.html#user">user runtime directory</a>. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 100 if a critical environment variable is missing. + </li> + <li> + user-init usually executes into + <a href="https://skarnet.org/software/s6/s6-svscan.html">s6-svscan</a> + which exits according to its documentation. + </li> + <li> + Since user-init is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + user-init mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective documentation. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no otions to user-init. + </li> + </ul> + <h2>Notes</h2> + <p> + More information about user supervision trees + themselves can be found on the + <a href="//0x53.net/software/goetia/supervisiontree.html#user">user supervision tree</a> + page. + </p> + </body> +</html> diff --git a/doc/bin/user-ml.html b/doc/bin/user-ml.html new file mode 100644 index 0000000..d6d7e2e --- /dev/null +++ b/doc/bin/user-ml.html @@ -0,0 +1,104 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-ml</title> + <meta name="Description" content="Script to autogenerate loggers for the user supervision tree." /> + <meta name="Description" content="A policy for s6 and s6-rc" /> + <meta name="Keywords" content="goetia longrun-make s6-rc logger log user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-ml program</h1> + <p> + user-ml automatically creates logging service + <a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html#source">source directories</a> + for longrun services of the + <a href="//0x53.net/software/goetia/confdir.html#user">user configuration directory</a>. + To create the logging service source directories, + user-ml uses + <a href="./longrun-make.html">longrun-make</a> internally. + </p> + <h2>Interface</h2> + <pre> user-ml</pre> + <ul> + <li> + user-ml takes no arguments. + </li> + <li> + It reads the <code>USER</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>USERTREE</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>HOME</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It deletes the <code>${USERTREE}/src/generated-logger</code> subdirectory + of the <a href="//0x53.net/software/goetia/confdir.html#user">user configuration subdirectory</a>. + </li> + <li> + It scans the <code>${USERTREE}/src</code> subdirectory + of the <a href="//0x53.net/software/goetia/confdir.html#user">user configuration subdirectory</a> + for longrun services. + </li> + <li> + It checks for each longrun it detects, + whether its source directory contains a file <code>no-ml</code>. + If this file exits, this longrun is skipped in the subsequent logger generation. + </li> + <li> + It generates a logging service source directory + <code>${USERTREE}/src/generated-logger/<var>@longrun@</var>-log</code> + in parallel for each longrun <code><var>@longrun@</var>-srv</code> it found + in the <a href="//0x53.net/software/goetia/confdir.html#user">user configuration subdirectory</a>. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 100 if a critical environment variable is missing. + </li> + <li> + Since user-ml is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + user-ml mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no options to user-ml. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/user-rc.html b/doc/bin/user-rc.html new file mode 100644 index 0000000..3bad0c5 --- /dev/null +++ b/doc/bin/user-rc.html @@ -0,0 +1,74 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-rc</title> + <meta name="Description" content="Convenience wrapper around s6-rc to control the user supervision tree." /> + <meta name="Keywords" content="goetia s6-rc user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-rc program</h1> + <p> + The user-rc program is a thin convenience wrapper around + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + doing nothing more then pointing it to the right livedir. + </p> + <p> + Read the page of + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + to understand what this utility does. + </p> + <h2>Interface</h2> + <pre> user-rc ... <a href="https://skarnet.org/software/s6-rc/s6-rc.html">see s6-rc</a> ...</pre> + <ul> + <li> + user-rc reads the <code>USER</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>USERTREE</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It runs + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + with the appropriate livedir option. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 100 if a critical environment variable is missing. + </li> + <li> + Since user-rc is a thin wrapper around + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a> + it behaves almost exactly like it. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + user-rc takes exactly the same options as + <a href="https://skarnet.org/software/s6-rc/s6-rc.html">s6-rc</a>. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/user-run.html b/doc/bin/user-run.html new file mode 100644 index 0000000..924849c --- /dev/null +++ b/doc/bin/user-run.html @@ -0,0 +1,78 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-run</title> + <meta name="Description" content="Run little scripts from the user supervision tree, providing reliability." /> + <meta name="Keywords" content="goetia s6 user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-run program</h1> + <p> + The user-run program allows + to hand over the execution of commands to the + <a href="//0x53.net/software/goetia/supervisiontree.html#user">user supervision tree</a>. + </p> + <h2>Interface</h2> + <pre> user-run <em>prog...</em></pre> + <ul> + <li> + user-rc reads the <code>USER</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>USERTREE</code> environment variable, + if it is empty it exits 100. + </li> + <li> + Internally, user-run invokes + <a href="https://skarnet.org/software/s6/s6-sudo.html">s6-sudo</a> + to connect to an + <a href="https://skarnet.org/software/s6/s6-sudod.html">s6-sudod</a> + instance provided by the user + <a href="//0x53.net/software/goetia/service/user/goetia-runner.html">goetia-runner</a>. + </li> + <li> + <code><em>prog...</em></code> is then transferred + to and executed by goetia-runner. + </li> + <li> + See + <a href="https://skarnet.org/software/s6/s6-sudo.html">s6-sudo</a> + and + <a href="https://skarnet.org/software/s6/s6-sudod.html">s6-sudod</a> + for configuration options and detailed information. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 100 if a critical environment variable is missing. + </li> + <li> + user-run behaves exactly as + <a href="https://skarnet.org/software/s6/s6-sudo.html">s6-sudo</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + user-run takes the exact same options as + <a href="https://skarnet.org/software/s6/s6-sudoc.html">s6-sudoc</a>. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/user-shutdown.html b/doc/bin/user-shutdown.html new file mode 100644 index 0000000..6a52db8 --- /dev/null +++ b/doc/bin/user-shutdown.html @@ -0,0 +1,68 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-shutdown</title> + <meta name="Description" content="Script to tear down a user supervision tree." /> + <meta name="Keywords" content="goetia s6 s6-rc shutdown user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-shutdown program</h1> + <p> + The user-shutdown program is used to tear down + <a href="//0x53.net/software/goetia/supervisiontree.html#user">user supervision trees</a>. + </p> + <h2>Interface</h2> + <pre> user-shutdown</pre> + <ul> + <li> + user-shutdown takes no arguments. + </li> + <li> + It starts the user + <a href="//0x53.net/software/goetia/goetia-base/service/user/goetia-shutdown.html">goetia-shutdown</a> + service. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + Since user-shutdown is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + user-shutdown mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective pages. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no options to user-shutdown. + </li> + </ul> + </body> +</html> diff --git a/doc/bin/user-tmpfs.html b/doc/bin/user-tmpfs.html new file mode 100644 index 0000000..3c22c57 --- /dev/null +++ b/doc/bin/user-tmpfs.html @@ -0,0 +1,104 @@ +<!DOCTYPE html> +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <title>user-tmpfs</title> + <meta name="Description" content="Script to prepare a user owned tmpfs to house a user supervision tree." /> + <meta name="Keywords" content="goetia tmpfs user supervision tree" /> + </head> + <header> + <p> + <a href="//0x53.net/software/goetia/goetia-base">goetia-base</a> + <br /> + <a href="//0x53.net/software/goetia">goetia</a> + <br /> + <a href="//0x53.net/software">Software</a> + <br /> + <a href="//0x53.net">0x53.net</a> + </p> + </header> + <body> + <h1>The user-tmpfs program</h1> + <p> + The user-tmpfs program prepares + a user owned tmpfs for + the user defined in the <code>USER</code> + environment variable. + The user owned tmpfs is created at + <code><var>@tmpfsdir@</var>/<var>@usrrundir@</var>/<var>${USER}</var></code>. + </p> + <h2>Interface</h2> + <pre> user-tmpfs</pre> + <ul> + <li> + user-tmpfs takes no arguments. + </li> + <li> + It reads the <code>USER</code> environment variable, + if it is empty it exits 100. + </li> + <li> + It reads the <code>USER_TMPFSDIR_SIZE</code> environment variable, + defaulting to <code>64m</code> if undefined. + </li> + <li> + It creates the directory + <code><var>@tmpfsdir@</var>/<var>@usrrundir@</var>/<var>${USER}</var></code>. + </li> + <li> + It mounts a tmpfs + of size <code>USER_TMPFSDIR_SIZE</code> + with its root owned bi <code>USER</code> + and mode <code>0755</code> + at <code><var>@tmpfsdir@</var>/<var>@usrrundir@</var>/<var>${USER}</var></code>. + </li> + </ul> + <h2>Exit codes</h2> + <ul> + <li> + 100 if a critical environment variable is missing. + </li> + <li> + Since user-tmpfs is an + <a href="https://skarnet.org/software/execline/">execline</a> + script, it exits with an approximation + of employed program that failed. + </li> + <li> + user-tmpfs mostly uses + <a href="https://skarnet.org/software/execline/">execline</a> + and + <a href="https://skarnet.org/software/s6/">s6</a> + software, the exit behaviour of which can be looked up on + their respective documentation. + </li> + <li> + See also: + <a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>. + </li> + </ul> + <h2>Options</h2> + <ul> + <li> + There are no otions to user-tmpfs. + </li> + </ul> + <h2>Notes</h2> + <p> + user-tmpfs is intended to be used in a boot time + <a href="//0x53.net/software/goetia/supervisiontree.html#system">system supervision tree</a> + oneshot service to prepare the + <a href="//0x53.net/software/goetia/rundir.html#user">user runtime directory</a> + of a user. + For each user who should have a user runtime directory, + there should be a distinct oneshot running user-tmpfs. + </p> + <p> + Alternatively, user-tmpfs could be run by a login manager + after login, but befor initiating the first + <a href="//0x53.net/software/goetia/supervisiontree.html#user">user supervision tree</a>. + </p> + </body> +</html> |