NAME [Toc] [Back]
modload - load kernel modules on demand
SYNOPSIS [Toc] [Back]
int modload(char *pathname);
DESCRIPTION [Toc] [Back]
modload allows processes with appropriate privilege to demand-load a
kernel module into the running kernel. The module must be of a
supported type and must have been registered via kcmodule(1M) before
it can be loaded.
The module to be loaded is specified by pathname. pathname may be
either a module name or an absolute pathname. If pathname is a module
name, a list of directories specified by modpath is searched for a
match. If pathname is absolute, only pathname is used to access the
object file. The file must be an ELF64 relocatable object file.
Notes [Toc] [Back]
modload is currently implemented as a macro.
RETURN VALUE [Toc] [Back]
On successful completion, modload returns a module identifier that can
be passed to moduload or modstat. On failure it returns -1 and sets
errno to identify the error.
ERRORS [Toc] [Back]
modload fails if one or more of the following are true:
[EACCES] A component of pathname denies search permission.
[ENOENT] The file named by pathname does not exist.
[ENOREG] Module being loaded is not currently registered.
[EINVAL] The file named by pathname is not appropriately preconfigured
or has invalid dependency on other modules.
[EPERM] The calling process does not have appropriate
[ERELOC] A relocation error occurred during the attempt to load
the module, or the module references symbols not
defined in the running kernel, or the module
references symbols in another loadable module but it
did not declare its dependence on this module in its
[ENAMETOOLONG] pathname is more than MAXPATHLEN characters long.
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[EBADVER] The module wrapper has an incorrect version number.
[ENOSYS] The Dynamically Loadable Kernel Module feature is not
SEE ALSO [Toc] [Back]
kcmodule(1M), modstat(2), moduload(2).
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