function::modname
FUNCTION:(3stap) Context Functions FUNCTION:(3stap)NAME
function::modname - Return the kernel module name loaded at the address
SYNOPSIS
modname:string(addr:long)
ARGUMENTS
addr
The address to map to a kernel module name
DESCRIPTION
Returns the module name associated with the given address if known. If not known it will return the string "<unknown>". If the address was
not in a kernel module, but in the kernel itself, then the string "kernel" will be returned.
SystemTap Tapset Reference May 2013 FUNCTION:(3stap)
Check Out this Related Man Page
kmem(7) Miscellaneous Information Manual kmem(7)NAME
kmem - perform I/O on kernel memory, based on symbol name
SYNOPSIS DESCRIPTION
When used with a valid file descriptor for (kmemfd), can be used to manipulate kernel memory. The specifics of this manipulation depend on
the command given as follows:
Read mirk_buflen bytes of kernel memory starting at the address for mirk_symname into mirk_buf. rks is a pointer to a
structure, defined below.
Indirect read. Read bytes of kernel memory starting at the address for mirk_symname and use that as the address from which to
read mirk_buflen bytes of kernel memory into mirk_buf. rks is a pointer to a structure.
Write mirk_buflen bytes from mirk_buf into kernel memory starting at the address for mirk_symname. rks is a pointer to
a structure.
Indirect write. Read bytes of kernel memory starting at the address for mirk_symname and use that as the kernel memory address
into which mirk_buflen bytes from mirk_buf are written. rks is a pointer to a structure.
Increase the hold count by one for the dynamically loaded module whose name is given by
rks, a pointer to a character string, thereby preventing its unloading.
Decrease the hold count by one for the dynamically loaded module whose name is given by
rks, a pointer to a character string. If the count is thereby reduced to 0, the module becomes a candidate for
unloading.
The definition is:
RETURN VALUE
returns one of the following values:
Successful completion.
Failure.
is set to indicate the error.
ERRORS
In addition to the values described in ioctl(2), the also sets to one of the following values if the corresponding condition is detected.
modname does not represent a currently loaded module or this is an and the hold count is already 0.
kmemfd open on wrong minor device (i.e., not
kmemfd open for reading and this is an
symname not found.
modname is greater than characters long, or symname is greater that characters long.
SEE ALSO getksym(2), ioctl(2), ioctl(5).
kmem(7)
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