PADDR_TO_MAP(3PROC) Process Control Library Functions PADDR_TO_MAP(3PROC)
NAME
Paddr_to_map,
Paddr_to_text_map,
Plmid_to_map,
Pname_to_map - lookup memory
map information
LIBRARY
Process Control Library (libproc, -lproc)
SYNOPSIS
#include <libproc.h> const prmap_t * Paddr_to_map(
struct ps_prochandle *P,
uintptr_t addr);
const prmap_t * Paddr_to_text_map(
struct ps_prochandle *P,
uintptr_t addr);
const prmap_t * Plmid_to_map(
struct ps_prochandle *P,
Lmid_t lmid,
const char *name);
const prmap_t * Pname_to_map(
struct ps_prochandle *P,
const char *name);
DESCRIPTION
The
Paddr_to_map(),
Paddr_to_text_map(),
Plmid_to_map(), and
Pname_to_map()
functions lookup memory map information in the process handle
P. The
prmap_t structure provides information such as the size, offset, and object
of the mapping and is defined in
proc(5).
The pointer to the data returned by the library will only be valid for as
long as the handle
P is valid. Any calls to
Prelease(3PROC) will
invalidate the data.
The
Paddr_to_map() function attempts to find the mapping information
corresponding to the address
addr.
The
Paddr_to_text_map() function is similar to the
Paddr_to_map() function;
however, it only returns successfully if the specified address corresponds
to a text mapping as identified by the run-time link-editor. One use of
this is to ensure that a mapping is actually a text-mapping before
inserting a breakpoint in it.
The
Pname_to_map() function looks up the object named
name and returns the
corresponding mapping information. Two special values may be used for
name. The macro PR_OBJ_EXEC refers to the executable object itself and the
macro PR_OBJ_LDSO refers to the object ld.so.1.
The
Plmid_to_map() function is similar to
Pname_to_map(). It allows
passing a link-map identifier,
lmid, which constricts the search of the
object named with
name to that link-map. The special value of
PR_LMID_EVERY may be passed to indicate that every link-map should be
searched, which is equivalent in behavior to the
Pname_to_map() function.
RETURN VALUES
Upon successful completion, the
Paddr_to_map(),
Paddr_to_text_map(),
Plmid_to_map(), and
Pname_to_map() functions return a pointer to the
corresponding mapping information. If none exists then NULL is returned.
INTERFACE STABILITY
UncommittedMT-LEVEL See
LOCKING in
libproc(3LIB).
SEE ALSO
libproc(3LIB),
Prelease(3PROC),
proc(5)illumos May 11, 2016 illumos