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

NAME


Paddr_to_ctf, Plmid_to_ctf, Pname_to_ctf - lookup CTF data

LIBRARY


Process Control Library (libproc, -lproc)

SYNOPSIS


#include <libproc.h>

ctf_file_t *
Paddr_to_ctf(struct ps_prochandle *P, uintptr_t addr);

ctf_file_t *
Plmid_to_ctf(struct ps_prochandle *P, Lmid_t lmid, const char *name);

ctf_file_t *
Pname_to_ctf(struct ps_prochandle *P, const char *name);

DESCRIPTION


The Paddr_to_ctf(), Plmid_to_ctf(), and Pname_to_ctf() functions lookup CTF
(Compact C Type Format) data, for use with libctf, from the process
represented by the handle P. In all cases, the CTF sections of both the
running executable and its shared libraries are searched.

The CTF container returned is valid as long as the process handle P is
valid. That is, until a call to Prelease(3PROC) is made. Further,
consumers must not close the CTF container.

The Paddr_to_ctf() function attempts to find the CTF section, if any, that
exists for the address addr. Note, not all addresses correspond to memory
regions that have CTF data. For example, if a user creates a region of
anonymous memory through the mmap(2) function, then it will not have any
corresponding CTF information.

The Pname_to_ctf() function looks up the object named name and returns the
corresponding CTF section, if any exists. 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_ctf() function is similar to Pname_to_ctf(). It allows the
passing of 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 indicates that every link-map should be searched, which is
equivalent in behavior to the Pname_to_ctf() function.

RETURN VALUES


Upon successful completion, the Paddr_to_ctf(), Plmid_to_ctf(), and
Pname_to_ctf() functions return a pointer to the corresponding CTF
container. Otherwise, if none exists then NULL is returned.

INTERFACE STABILITY


Uncommitted

MT-LEVEL
See LOCKING in libproc(3LIB).

SEE ALSO


libproc(3LIB), ctf(4)

illumos May 11, 2016 illumos