POBJNAME(3PROC) Process Control Library Functions POBJNAME(3PROC)

Pobjname, Pobjname_resolved
turn a virtual address into its mapped object

Process Control Library (libproc, -lproc)

#include <libproc.h>

char *
Pobjname(struct ps_prochandle *P, uintptr_t addr, char *buffer, size_t bufsize);

char *
Pobjname_resolved(struct ps_prochandle *P, uintptr_t addr, char *buffer, size_t bufsize);

The Pobjname() and Pobjname_resolved() functions attempt to determine the underlying mapped object that contains the virtual address addr in the process handle P.

A program consists of multiple memory mappings. Some are provided by the system, such as the stack and the heap. While others are created through explicit calls to mmap(2) or brought in by the run-time link-editor due to dependencies specified in binaries and libraries.

If addr is contained in a mapping, then up to bufsize characters, including the null terminator, of the name of the corresponding object will be written into buffer. The Pobjname_resolved() function attempts to resolve the object to a full file system path. If the full file-system path cannot be determined, then it will fall back to the name that the run-time link-editor has for that mapping, which is the behavior of Pobjname().

Upon successful completion, the Pobjname() and Pobjname_resolved() functions return buffer. Otherwise, NULL is returned to indicate the object name could not be found.


See LOCKING in libproc(3LIB).

mmap(2), libproc(3LIB), Pobject_iter(3PROC), proc(5)
May 11, 2016 OmniOS