NAME
dlgetmodinfo() — retrieve information about a loaded module (program or shared library)
SYNOPSIS
cc
[flag... ]
file ...
-ldl
[library] ...
#include <dlfcn.h>
uint64_t dlgetmodinfo(int index,
struct load_module_desc *desc,
size_t desc_size,
void *(*read_tgt_mem)(void* buffer,
uint64_t ptr,
size_t bufsiz,
int ident),
int ident_parm,
uint64_t load_map_parm);
Multithread Usage
Thread safe in
libdl.sl
but not in
libxpdl.sl.
DESCRIPTION
dlgetmodinfo()
is one of a family of routines that give the user
direct access to the dynamic linking facilities.
dlgetmodinfo()
retrieves information about a load module from an
index
specifying the placement of the load module in the dynamic
loader's search list. Unlike
dlget(),
dlgetmodinfo()
can retrieve information about a load module in another process.
index
of
-1
requests information about the dynamic loader. An
index
of
-2
requests information about the program file itself. The
dlgetmodinfo()
routine fills the
load_module_desc
with information from the matching load module.
The
desc,
desc_size,
read_tgt_mem,
ident_parm,
and
load_map_parm
parameters are identical to those for
dlmodinfo().
See
dlmodinfo(3C).
RETURN VALUE
If successful,
dlgetmodinfo()
returns a handle for the shared library as defined by the return value from
dlopen().
NULL
is returned otherwise.
The return values are type-converted to
uint64_t.
ERRORS
If
dlgetmodinfo()
fails, a subsequent call to
dlerrno()
returns one of the following values:
- RTLD_ERR_CANT_APPLY_RELOC
Cannot apply relocation in library.
- RTLD_ERR_INV_ADDRESS
Invalid address.
- RTLD_ERR_INV_BUFFER_ARGUMENT
Invalid descriptor argument.
- RTLD_ERR_INV_DESC_VERSION
Invalid descriptor version.
- RTLD_ERR_INV_LIB_INDEX
Invalid load module index.
- RTLD_ERR_NO_MEMORY
Out of memory.
- RTLD_ERR_READ_TGT_MEM_FAILED
read_tgt_mem
failed in reading target memory.
- RTLD_ERR_SETCANCELSTATE_FAILED
__thread_setcancelstate
failed on entry to or exit from
dlgetmodinfo().
- RTLD_ERR_SIGENABLE_FAILED
sigenable
failed on exit from
dlgetmodinfo().
- RTLD_ERR_SIGINHIBIT_FAILED
siginhibit
failed on entry to
dlgetmodinfo().
AUTHOR
dlgetmodinfo()
was developed by HP.
SEE ALSO
Miscellaneous
- a.out(4)
Assembler, compiler, and linker output.
- dlclose(3C)
Unloads a shared library previously loaded by
dlopen().
- dlerror(3C)
Returns the last error message recorded by
dld.
- dlerrno(3C)
Returns an error code for the last error recorded by
dld.
- dlget(3C)
Returns information about a loaded module.
- dlgetname(3C)
Returns the name of the storage containing a load module.
- dlopen(3C)
Loads a shared library.
- dlsym(3C)
Gets the address of a symbol in a shared library.
- dlmodinfo(3C)
Retrieve information about a loaded module (program or shared library).
Texts and Tutorials
- HP-UX Linker and Libraries Online User Guide
(See the
+help
option)
- HP-UX Linker and Libraries User's Guide
(See
manuals(5)
for ordering information)
Printable version
