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FreeBSD 11.0 - man page for modfind (freebsd section 2)

MODFIND(2)						      BSD System Calls Manual							MODFIND(2)

NAME
modfind -- returns the modid of a kernel module
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/param.h> #include <sys/module.h> int modfind(const char *modname);
DESCRIPTION
The modfind() system call returns the modid of the kernel module referenced by modname.
RETURN VALUES
The modfind() system call returns the modid of the kernel module referenced by file. Upon error, modfind() returns -1 and sets errno to indicate the error.
ERRORS
errno is set to the following if modfind() fails: [EFAULT] The data required for this operation could not be read from the kernel space. [ENOENT] The file specified is not loaded in the kernel.
SEE ALSO
kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldstat(2), kldsym(2), kldunload(2), modfnext(2), modnext(2), modstat(2), kld(4), kldstat(8)
HISTORY
The kld interface first appeared in FreeBSD 3.0.
BSD
September 28, 2000 BSD