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|
/*******************************************************************************
*
* Version 2.x, Copyright (C) 2007-2013, Marcus Holland-Moritz <mhx@cpan.org>.
* Version 1.x, Copyright (C) 1999, Graham Barr <gbarr@pobox.com>.
*
* This program is free software; you can redistribute it and/or
* modify it under the same terms as Perl itself.
*
*******************************************************************************/
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define NEED_sv_2pv_flags
#define NEED_sv_pvn_force_flags
#include "ppport.h"
#include <sys/types.h>
#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
# ifndef HAS_SEM
# include <sys/ipc.h>
# endif
# ifdef HAS_MSG
# include <sys/msg.h>
# endif
# ifdef HAS_SHM
# if defined(PERL_SCO) || defined(PERL_ISC)
# include <sys/sysmacros.h> /* SHMLBA */
# endif
# include <sys/shm.h>
# ifndef HAS_SHMAT_PROTOTYPE
extern Shmat_t shmat(int, char *, int);
# endif
# if defined(HAS_SYSCONF) && defined(_SC_PAGESIZE)
# undef SHMLBA /* not static: determined at boot time */
# define SHMLBA sysconf(_SC_PAGESIZE)
# elif defined(HAS_GETPAGESIZE)
# undef SHMLBA /* not static: determined at boot time */
# define SHMLBA getpagesize()
# endif
# endif
#endif
/* Required to get 'struct pte' for SHMLBA on ULTRIX. */
#if defined(__ultrix) || defined(__ultrix__) || defined(ultrix)
#include <machine/pte.h>
#endif
/* Required in BSDI to get PAGE_SIZE definition for SHMLBA.
* Ugly. More beautiful solutions welcome.
* Shouting at BSDI sounds quite beautiful. */
#ifdef __bsdi__
# include <vm/vm_param.h> /* move upwards under HAS_SHM? */
#endif
#ifndef S_IRWXU
# ifdef S_IRUSR
# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
# else
# define S_IRWXU 0700
# define S_IRWXG 0070
# define S_IRWXO 0007
# endif
#endif
#define AV_FETCH_IV(ident, av, index) \
STMT_START { \
SV **svp; \
if ((svp = av_fetch((av), (index), FALSE)) != NULL) \
ident = SvIV(*svp); \
} STMT_END
#define AV_STORE_IV(ident, av, index) \
av_store((av), (index), newSViv(ident))
static const char *s_fmt_not_isa = "Method %s not called a %s object";
static const char *s_bad_length = "Bad arg length for %s, length is %d, should be %d";
static const char *s_sysv_unimpl PERL_UNUSED_DECL
= "System V %sxxx is not implemented on this machine";
static const char *s_pkg_msg = "IPC::Msg::stat";
static const char *s_pkg_sem = "IPC::Semaphore::stat";
static const char *s_pkg_shm = "IPC::SharedMem::stat";
static void *sv2addr(SV *sv)
{
if (SvPOK(sv) && SvCUR(sv) == sizeof(void *))
{
return *((void **) SvPVX(sv));
}
croak("invalid address value");
return 0;
}
static void assert_sv_isa(SV *sv, const char *name, const char *method)
{
if (!sv_isa(sv, name))
{
croak(s_fmt_not_isa, method, name);
}
}
static void assert_data_length(const char *name, int got, int expected)
{
if (got != expected)
{
croak(s_bad_length, name, got, expected);
}
}
#include "const-c.inc"
MODULE=IPC::SysV PACKAGE=IPC::Msg::stat
PROTOTYPES: ENABLE
void
pack(obj)
SV * obj
PPCODE:
{
#ifdef HAS_MSG
AV *list = (AV*) SvRV(obj);
struct msqid_ds ds;
assert_sv_isa(obj, s_pkg_msg, "pack");
AV_FETCH_IV(ds.msg_perm.uid , list, 0);
AV_FETCH_IV(ds.msg_perm.gid , list, 1);
AV_FETCH_IV(ds.msg_perm.cuid, list, 2);
AV_FETCH_IV(ds.msg_perm.cgid, list, 3);
AV_FETCH_IV(ds.msg_perm.mode, list, 4);
AV_FETCH_IV(ds.msg_qnum , list, 5);
AV_FETCH_IV(ds.msg_qbytes , list, 6);
AV_FETCH_IV(ds.msg_lspid , list, 7);
AV_FETCH_IV(ds.msg_lrpid , list, 8);
AV_FETCH_IV(ds.msg_stime , list, 9);
AV_FETCH_IV(ds.msg_rtime , list, 10);
AV_FETCH_IV(ds.msg_ctime , list, 11);
ST(0) = sv_2mortal(newSVpvn((char *) &ds, sizeof(ds)));
XSRETURN(1);
#else
croak(s_sysv_unimpl, "msg");
#endif
}
void
unpack(obj, ds)
SV * obj
SV * ds
PPCODE:
{
#ifdef HAS_MSG
AV *list = (AV*) SvRV(obj);
STRLEN len;
const struct msqid_ds *data = (struct msqid_ds *) SvPV_const(ds, len);
assert_sv_isa(obj, s_pkg_msg, "unpack");
assert_data_length(s_pkg_msg, len, sizeof(*data));
AV_STORE_IV(data->msg_perm.uid , list, 0);
AV_STORE_IV(data->msg_perm.gid , list, 1);
AV_STORE_IV(data->msg_perm.cuid, list, 2);
AV_STORE_IV(data->msg_perm.cgid, list, 3);
AV_STORE_IV(data->msg_perm.mode, list, 4);
AV_STORE_IV(data->msg_qnum , list, 5);
AV_STORE_IV(data->msg_qbytes , list, 6);
AV_STORE_IV(data->msg_lspid , list, 7);
AV_STORE_IV(data->msg_lrpid , list, 8);
AV_STORE_IV(data->msg_stime , list, 9);
AV_STORE_IV(data->msg_rtime , list, 10);
AV_STORE_IV(data->msg_ctime , list, 11);
XSRETURN(1);
#else
croak(s_sysv_unimpl, "msg");
#endif
}
MODULE=IPC::SysV PACKAGE=IPC::Semaphore::stat
PROTOTYPES: ENABLE
void
pack(obj)
SV * obj
PPCODE:
{
#ifdef HAS_SEM
AV *list = (AV*) SvRV(obj);
struct semid_ds ds;
assert_sv_isa(obj, s_pkg_sem, "pack");
AV_FETCH_IV(ds.sem_perm.uid , list, 0);
AV_FETCH_IV(ds.sem_perm.gid , list, 1);
AV_FETCH_IV(ds.sem_perm.cuid, list, 2);
AV_FETCH_IV(ds.sem_perm.cgid, list, 3);
AV_FETCH_IV(ds.sem_perm.mode, list, 4);
AV_FETCH_IV(ds.sem_ctime , list, 5);
AV_FETCH_IV(ds.sem_otime , list, 6);
AV_FETCH_IV(ds.sem_nsems , list, 7);
ST(0) = sv_2mortal(newSVpvn((char *) &ds, sizeof(ds)));
XSRETURN(1);
#else
croak(s_sysv_unimpl, "sem");
#endif
}
void
unpack(obj, ds)
SV * obj
SV * ds
PPCODE:
{
#ifdef HAS_SEM
AV *list = (AV*) SvRV(obj);
STRLEN len;
const struct semid_ds *data = (struct semid_ds *) SvPV_const(ds, len);
assert_sv_isa(obj, s_pkg_sem, "unpack");
assert_data_length(s_pkg_sem, len, sizeof(*data));
AV_STORE_IV(data->sem_perm.uid , list, 0);
AV_STORE_IV(data->sem_perm.gid , list, 1);
AV_STORE_IV(data->sem_perm.cuid, list, 2);
AV_STORE_IV(data->sem_perm.cgid, list, 3);
AV_STORE_IV(data->sem_perm.mode, list, 4);
AV_STORE_IV(data->sem_ctime , list, 5);
AV_STORE_IV(data->sem_otime , list, 6);
AV_STORE_IV(data->sem_nsems , list, 7);
XSRETURN(1);
#else
croak(s_sysv_unimpl, "sem");
#endif
}
MODULE=IPC::SysV PACKAGE=IPC::SharedMem::stat
PROTOTYPES: ENABLE
void
pack(obj)
SV * obj
PPCODE:
{
#ifdef HAS_SHM
AV *list = (AV*) SvRV(obj);
struct shmid_ds ds;
assert_sv_isa(obj, s_pkg_shm, "pack");
AV_FETCH_IV(ds.shm_perm.uid , list, 0);
AV_FETCH_IV(ds.shm_perm.gid , list, 1);
AV_FETCH_IV(ds.shm_perm.cuid, list, 2);
AV_FETCH_IV(ds.shm_perm.cgid, list, 3);
AV_FETCH_IV(ds.shm_perm.mode, list, 4);
AV_FETCH_IV(ds.shm_segsz , list, 5);
AV_FETCH_IV(ds.shm_lpid , list, 6);
AV_FETCH_IV(ds.shm_cpid , list, 7);
AV_FETCH_IV(ds.shm_nattch , list, 8);
AV_FETCH_IV(ds.shm_atime , list, 9);
AV_FETCH_IV(ds.shm_dtime , list, 10);
AV_FETCH_IV(ds.shm_ctime , list, 11);
ST(0) = sv_2mortal(newSVpvn((char *) &ds, sizeof(ds)));
XSRETURN(1);
#else
croak(s_sysv_unimpl, "shm");
#endif
}
void
unpack(obj, ds)
SV * obj
SV * ds
PPCODE:
{
#ifdef HAS_SHM
AV *list = (AV*) SvRV(obj);
STRLEN len;
const struct shmid_ds *data = (struct shmid_ds *) SvPV_const(ds, len);
assert_sv_isa(obj, s_pkg_shm, "unpack");
assert_data_length(s_pkg_shm, len, sizeof(*data));
AV_STORE_IV(data->shm_perm.uid , list, 0);
AV_STORE_IV(data->shm_perm.gid , list, 1);
AV_STORE_IV(data->shm_perm.cuid, list, 2);
AV_STORE_IV(data->shm_perm.cgid, list, 3);
AV_STORE_IV(data->shm_perm.mode, list, 4);
AV_STORE_IV(data->shm_segsz , list, 5);
AV_STORE_IV(data->shm_lpid , list, 6);
AV_STORE_IV(data->shm_cpid , list, 7);
AV_STORE_IV(data->shm_nattch , list, 8);
AV_STORE_IV(data->shm_atime , list, 9);
AV_STORE_IV(data->shm_dtime , list, 10);
AV_STORE_IV(data->shm_ctime , list, 11);
XSRETURN(1);
#else
croak(s_sysv_unimpl, "shm");
#endif
}
MODULE=IPC::SysV PACKAGE=IPC::SysV
PROTOTYPES: ENABLE
void
ftok(path, id = &PL_sv_undef)
const char *path
SV *id
PREINIT:
int proj_id = 1;
key_t k;
CODE:
#if defined(HAS_SEM) || defined(HAS_SHM)
if (SvOK(id))
{
if (SvIOK(id))
{
proj_id = (int) SvIVX(id);
}
else if (SvPOK(id) && SvCUR(id) == sizeof(char))
{
proj_id = (int) *SvPVX(id);
}
else
{
croak("invalid project id");
}
}
/* Including <sys/types.h> before <sys/ipc.h> makes Tru64
* to see the obsolete prototype of ftok() first, grumble. */
# ifdef __osf__
# define Ftok_t char*
/* Configure TODO Ftok_t */
# endif
# ifndef Ftok_t
# define Ftok_t const char*
# endif
k = ftok((Ftok_t)path, proj_id);
ST(0) = k == (key_t) -1 ? &PL_sv_undef : sv_2mortal(newSViv(k));
XSRETURN(1);
#else
Perl_die(aTHX_ PL_no_func, "ftok"); return;
#endif
void
memread(addr, sv, pos, size)
SV *addr
SV *sv
int pos
int size
CODE:
char *caddr = (char *) sv2addr(addr);
char *dst;
if (!SvOK(sv))
{
sv_setpvn(sv, "", 0);
}
SvPV_force_nolen(sv);
dst = SvGROW(sv, (STRLEN) size + 1);
Copy(caddr + pos, dst, size, char);
SvCUR_set(sv, size);
*SvEND(sv) = '\0';
SvSETMAGIC(sv);
#ifndef INCOMPLETE_TAINTS
/* who knows who has been playing with this memory? */
SvTAINTED_on(sv);
#endif
XSRETURN_YES;
void
memwrite(addr, sv, pos, size)
SV *addr
SV *sv
int pos
int size
CODE:
char *caddr = (char *) sv2addr(addr);
STRLEN len;
const char *src = SvPV_const(sv, len);
int n = ((int) len > size) ? size : (int) len;
Copy(src, caddr + pos, n, char);
if (n < size)
{
memzero(caddr + pos + n, size - n);
}
XSRETURN_YES;
void
shmat(id, addr, flag)
int id
SV *addr
int flag
CODE:
#ifdef HAS_SHM
void *caddr = SvOK(addr) ? sv2addr(addr) : NULL;
void *shm = (void *) shmat(id, caddr, flag);
ST(0) = shm == (void *) -1 ? &PL_sv_undef
: sv_2mortal(newSVpvn((char *) &shm, sizeof(void *)));
XSRETURN(1);
#else
Perl_die(aTHX_ PL_no_func, "shmat"); return;
#endif
void
shmdt(addr)
SV *addr
CODE:
#ifdef HAS_SHM
void *caddr = sv2addr(addr);
int rv = shmdt((Shmat_t)caddr);
ST(0) = rv == -1 ? &PL_sv_undef : sv_2mortal(newSViv(rv));
XSRETURN(1);
#else
Perl_die(aTHX_ PL_no_func, "shmdt"); return;
#endif
INCLUDE: const-xs.inc
|
