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dlsym (3) and dlvsym (3) functions return the address of a symbol in a shared object or executable handle. They take a symbol name, a version string, and a special handle (RTLD_DEFAULT or RTLD_NEXT) as arguments.
Learn how to use dlopen, dlsym, dlclose, and dlerror to load and resolve symbols from dynamic libraries in Linux. See the syntax, flags, error handling, and library search order of these functions.
Learn how to use dlsym and dlopen functions in C to load and call functions from shared objects with runtime parameters. See examples, answers, and comments from experts and users.
Learn how to use dlopen, dlsym, and dlclose to load and use shared libraries at runtime in Linux. See the interface, search order, error handling, and examples of DL libraries.
The dlsym () function shall obtain the address of a symbol (a function identifier or a data object identifier) defined in the symbol table identified by the handle argument. The handle argument is a symbol table handle returned from a call to dlopen () and the name argument is the symbol's name as a character string.
Learn how to use dlsym () and dlvsym () functions to get the address of a symbol in a shared object or executable. See the syntax, description, attributes, versions, and examples of these functions.
dlsym - Man Page. get the address of a symbol from a symbol table handle. Prolog. This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
PORTING ISSUES. dlsym() is implemented as a pass-through to the Win32 function GetProcAddress(), and hence does not have all of the features available on some UNIX platforms.The special handle RTLD_NEXT specified in UNIX 98 is not supported. Please refer to the Win32 online documentation for more detailed information.
dlsym (3p) is a POSIX function that gets the address of a symbol from a symbol table handle returned by dlopen (3p). Learn the syntax, description, errors, examples and application usage of dlsym (3p) and related functions.
NAME. dlsym, dlvsym - obtain address of a symbol in a shared object or executable. LIBRARY. Dynamic linking library (libdl, -ldl)SYNOPSIS #include void *dlsym(void *restrict handle, const char *restrict symbol); #define _GNU_SOURCE #include void *dlvsym(void *restrict handle, const char *restrict symbol, const char *restrict version); ...