- use one single library instead of loose library files - we don't have ftime() anymore - shmat(non-NULL) is currently broken, fix shmt test set to bypass this - some other small issues
211 lines
4.6 KiB
C
211 lines
4.6 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* NAME
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* libmsg.c
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*
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* DESCRIPTION
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* common routines for the IPC system call tests.
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*
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* The library contains the following routines:
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*
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* getipckey()
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* rm_queue()
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* init_buf()
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* rm_sema()
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* check_root()
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* getuserid()
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* rm_shm()
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*/
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#define LIBIPC
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#if 0
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#include "ipcmsg.h"
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#endif
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#include "ipcsem.h"
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#include <pwd.h>
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#include <sys/time.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/sem.h>
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/*
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* getipckey() - generates and returns a message key used by the "get"
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* calls to create an IPC resource.
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*/
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int
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getipckey()
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{
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const char a = 'a';
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int ascii_a = (int)a;
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char *curdir = NULL;
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char curdira[PATH_MAX];
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size_t size = sizeof(curdira);
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key_t ipc_key;
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struct timeval tv;
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if (NULL == (curdir = getcwd(curdira, size))) {
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tst_brkm(TBROK, cleanup, "Can't get current directory "
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"in getipckey()");
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}
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/*
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* Get a Sys V IPC key
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*
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* ftok() requires a character as a second argument. This is
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* refered to as a "project identifier" in the man page. In
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* order to maximize the chance of getting a unique key, the
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* project identifier is a "random character" produced by
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* generating a random number between 0 and 25 and then adding
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* that to the ascii value of 'a'. The "seed" for the random
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* number is the microsecond value that is set in the timeval
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* structure after calling gettimeofday().
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*/
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(void) gettimeofday(&tv, NULL);
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srandom((unsigned int)tv.tv_usec);
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if ((ipc_key = ftok(curdir, ascii_a + random()%26)) == -1) {
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tst_brkm(TBROK, cleanup, "Can't get msgkey from ftok()");
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}
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return(ipc_key);
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}
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#if 0
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/*
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* rm_queue() - removes a message queue.
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*/
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void
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rm_queue(int queue_id)
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{
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if (queue_id == -1) { /* no queue to remove */
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return;
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}
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if (msgctl(queue_id, IPC_RMID, NULL) == -1) {
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tst_resm(TINFO, "WARNING: message queue deletion failed.");
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tst_resm(TINFO, "This could lead to IPC resource problems.");
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tst_resm(TINFO, "id = %d", queue_id);
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}
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}
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#endif
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#if 0
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/*
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* init_buf() - initialize the message buffer with some text and a type.
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*/
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void
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init_buf(MSGBUF *m_buf, int type, int size)
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{
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int i;
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int ascii_a = (int)'a'; /* the ascii value for 'a' */
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/* this fills the message with a repeating alphabet string */
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for (i=0; i<size; i++) {
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m_buf->mtext[i] = ascii_a + (i % 26);
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}
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/* terminate the message */
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m_buf->mtext[i] = (char)NULL;
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/* if the type isn't valid, set it to 1 */
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if (type < 1) {
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m_buf->mtype = 1;
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} else {
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m_buf->mtype = type;
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}
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}
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#endif
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/*
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* rm_sema() - removes a semaphore.
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*/
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void
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rm_sema(int sem_id)
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{
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union semun arr;
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if (sem_id == -1) { /* no semaphore to remove */
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return;
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}
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if (semctl(sem_id, 0, IPC_RMID, arr) == -1) {
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tst_resm(TINFO, "WARNING: semaphore deletion failed.");
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tst_resm(TINFO, "This could lead to IPC resource problems.");
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tst_resm(TINFO, "id = %d", sem_id);
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}
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}
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/*
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* check_root() - make sure the process ID is root
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*/
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void
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check_root(void)
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{
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if (geteuid() != 0) {
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tst_brkm(TBROK, cleanup, "test must be run as root");
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}
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}
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/*
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* getuserid() - return the integer value for the "user" id
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*/
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int
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getuserid(char *user)
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{
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struct passwd *ent;
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/* allocate some space for the passwd struct */
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if ((ent = (struct passwd *)malloc(sizeof(struct passwd))) == NULL) {
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tst_brkm(TBROK, cleanup, "couldn't allocate space for passwd"
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" structure");
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}
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/* get the uid value for the user */
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if ((ent = getpwnam(user)) == NULL) {
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tst_brkm(TBROK, cleanup, "Couldn't get password entry for %s",
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user);
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}
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return(ent->pw_uid);
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}
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/*
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* rm_shm() - removes a shared memory segment.
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*/
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void
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rm_shm(int shm_id)
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{
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if (shm_id == -1) { /* no segment to remove */
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return;
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}
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/*
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* check for # of attaches ?
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*/
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if (shmctl(shm_id, IPC_RMID, NULL) == -1) {
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tst_resm(TINFO, "WARNING: shared memory deletion failed.");
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tst_resm(TINFO, "This could lead to IPC resource problems.");
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tst_resm(TINFO, "id = %d", shm_id);
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}
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}
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