Type:
Class
Constants:
NEXT : Document-const

NEXT

A predefined pseudo-handle of RTLD_NEXT

Which will find the next occurrence of a function in the search order after the current library.

DEFAULT : Document-const

DEFAULT

A predefined pseudo-handle of RTLD_DEFAULT

Which will find the first occurrence of the desired symbol using the default library search order

RTLD_GLOBAL : Document-const

RTLD_GLOBAL

rtld Fiddle::Handle flag.

The symbols defined by this library will be made available for symbol resolution of subsequently loaded libraries.

RTLD_LAZY : Document-const

RTLD_LAZY

rtld Fiddle::Handle flag.

Perform lazy binding. Only resolve symbols as the code that references them is executed. If the symbol is never referenced, then it is never resolved. (Lazy binding is only performed for function references; references to variables are always immediately bound when the library is loaded.)

RTLD_NOW : Document-const

RTLD_NOW

rtld Fiddle::Handle flag.

If this value is specified or the environment variable LD_BIND_NOW is set to a nonempty string, all undefined symbols in the library are resolved before Fiddle.dlopen returns. If this cannot be done an error is returned.

The Fiddle::Handle is the manner to access the dynamic library

Example

Setup

libc_so = "/lib64/libc.so.6"
=> "/lib64/libc.so.6"
@handle = Fiddle::Handle.new(libc_so)
=> #<Fiddle::Handle:0x00000000d69ef8>

Setup, with flags

libc_so = "/lib64/libc.so.6"
=> "/lib64/libc.so.6"
@handle = Fiddle::Handle.new(libc_so, Fiddle::RTLD_LAZY | Fiddle::RTLD_GLOBAL)
=> #<Fiddle::Handle:0x00000000d69ef8>

See RTLD_LAZY and RTLD_GLOBAL

Addresses to symbols

strcpy_addr = @handle['strcpy']
=> 140062278451968

or

strcpy_addr = @handle.sym('strcpy')
=> 140062278451968
[] 2

sym(name) Instance Public methods Get the address as an

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enable_close

enable_close Instance Public methods Enable a call to dlclose() when this handle

2015-04-06 00:38:53
new

new(lib = nil, flags = Fiddle::RTLD_LAZY | Fiddle::RTLD_GLOBAL) Class Public methods Create

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to_i

to_i Instance Public methods Returns the memory address for this handle.

2015-04-06 00:44:40
close_enabled?

close_enabled? Instance Public methods Returns true if dlclose()

2015-04-06 00:28:25
sym

sym(name) Class Public methods Get the address as an

2015-04-06 00:17:03
[]

sym(name) Class Public methods Get the address as an

2015-04-06 00:09:37
close

close Instance Public methods Close this handle. Calling

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disable_close

disable_close Instance Public methods Disable a call to dlclose() when this

2015-04-06 00:33:49
sym 2

sym(name) Instance Public methods Get the address as an

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