dlerror(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | VERSIONS | ATTRIBUTES | CONFORMING TO | NOTES | EXAMPLES | SEE ALSO | COLOPHON

DLERROR(3)              Linux Programmer's Manual             DLERROR(3)

NAME         top

       dlerror - obtain error diagnostic for functions in the dlopen API

SYNOPSIS         top

       #include <dlfcn.h>

       char *dlerror(void);

       Link with -ldl.

DESCRIPTION         top

       The dlerror() function returns a human-readable, null-terminated
       string describing the most recent error that occurred from a call
       to one of the functions in the dlopen API since the last call to
       dlerror().  The returned string does not include a trailing
       newline.

       dlerror() returns NULL if no errors have occurred since
       initialization or since it was last called.

VERSIONS         top

       dlerror() is present in glibc 2.0 and later.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             Attribute     Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │dlerror()                             │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

CONFORMING TO         top

       POSIX.1-2001.

NOTES         top

       The message returned by dlerror() may reside in a statically
       allocated buffer that is overwritten by subsequent dlerror()
       calls.

   History
       This function is part of the dlopen API, derived from SunOS.

EXAMPLES         top

       See dlopen(3).

SEE ALSO         top

       dladdr(3), dlinfo(3), dlopen(3), dlsym(3)

COLOPHON         top

       This page is part of release 5.11 of the Linux man-pages project.
       A description of the project, information about reporting bugs,
       and the latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

Linux                          2021-03-22                     DLERROR(3)

Pages that refer to this page: dladdr(3)dlinfo(3)dlopen(3)dlsym(3)