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The loader table is always available in Lua scripts. There is no need to require it like other loader-specific modules.
machine | The target's hw.machine sysctl(8) value. |
machine_arch | |
The target's hw.machine_arch sysctl(8) value. Some boot loaders are 32-bit applications that then load a 64-bit kernel. In these cases, machine_arch represents the 32-bit architecture, not the 64-bit architecture. | |
lua_path | The current lua loading path. |
version | The version of the boot program. |
delay(usec) | |
Delay for usec microseconds. | |
command_error() | |
Returns the error string from the last command to fail. | |
command(argc, argv) | |
Like perform() but the arguments are already parsed onto the stack. | |
exit(status) | |
Exit the boot loader back to the firmware with a status of status. The interpretation of this value is firmware specific. | |
interpret(str) | |
Execute the loader builtin command str as if it were typed by the user. This will first try to execute str as Lua. If that fails, it will attempt to execute it as a cli command, including those defined by the cli.lua(8) mechanism. If that fails, it will attempt to execute it as a builtin command and return the same values as perform(). | |
parse(str) | |
Parses the command str into its words and return those words on the stack. | |
getenv(name) | |
Obtains the value of the environment variable name. | |
has_command(cmd) | |
returns true if commmand is present in the interpreter as a builtin. Otherwise it returns nil and an error string. It does not check the "cli" table to see if a user defined command has been created. | |
has_feature(feature) | |
returns true if the feature is enabled. Otherwise it returns nil and an error string. | |
perform(str) | |
Execute the loader builtin command str. Returns the result of the command, one of the following values: | |
loader.CMD_OK | |
The command completed successfully. | |
loader.CMD_WARN | |
The command was successful, but the user stopped its output prematurely. | |
loader.CMD_ERROR | |
The command did not complete successfully. Use command_error to retrieve the error. | |
loader.CMD_CRIT | |
The command returned a critical error that was already printed. | |
loader.CMD_FATAL | |
The command determined continuation was not possible and the loader panicked. In practice, though, panic() does not return. | |
printc(str) | |
Outputs the string using the loader's putchar() function. This function is also available globally as printc(). | |
setenv(name, value) | |
Insert or reset the environment variable name into the loader's environment list. If no environment variable with this name exists, one is created. If one exists, its value is replaced. | |
time() | |
Returns the loader's notion of time, in seconds since 1970. The value of loader's notion varies somewhat between different loading environments. | |
unsetenv(name) | |
Removes the environment variable name from the loader's environment list. | |
LOADER.LUA (8) | February 6, 2024 |
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