D4
/
analyzer-d4-pibs
mirror of https://github.com/D4-project/analyzer-d4-pibs
2
0
Fork 0
Code Issues Releases Wiki Activity

add: [pibs] added memory management functions

master
Gerard Wagener 2019-04-10 14:40:10 +02:00
parent 2226c6c383
commit 3f5d27d123
1 changed files with 91 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
bin/memutils.c Normal file
View File

@ -0,0 +1,91 @@
/*
* pibs - Passive Identification of BackScatter
*
* Copyright (C) 2019 Gerard Wagener
* Copyright (C) 2019 CIRCL Computer Incident Response Center Luxembourg
* (SMILE gie).
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "pibs.h"
//FIXME not generic enough if more segments are needed
int load_shmid_file(pibs_t* pibs)
{
FILE* fp;
if (pibs->shmid_file[0]) {
fp = fopen(pibs->shmid_file,"r");
if (fp) {
//FIXME check file
fscanf(fp, "%d", &pibs->shmid);
return pibs->shmid;
}
} else {
pibs->errno_pibs = ERR_NO_SHMID_FILE;
}
return -1;
}
int pibs_shmat(pibs_t* pibs)
{
/* FIXME init function needs to break up in two functions. One that
* initializes internal pibs structures as cli options etc
* a second one for describing the data itself, size of bin_table
* number of items etc.
*/
if (pibs->data) {
free(pibs->data);
pibs->data = NULL;
}
if (pibs->data) {
pibs->errno_pibs = ERR_ATTACH_NOT_EMPTY;
printf("TEST Data is not null\n");
return -1;
}
if (!pibs->shmid_file[0]) {
pibs->errno_pibs = ERR_NO_SHMID_FILE;
return -1;
}
if (load_shmid_file(pibs) > 0) {
pibs->data = shmat(pibs->shmid, NULL, SHM_RND);
if ( (int) pibs->data == -1) {
pibs->errno_copy = errno;
} else {
return 1;
}
}
// Something did not work
return -1;
}
int pibs_shmget(pibs_t* pibs)
{
FILE* fp;
pibs->shmid = shmget(IPC_PRIVATE, pibs->data_size, IPC_CREAT | 0600);
if (pibs->shmid < 0) {
pibs->errno_copy = errno;
}
if (pibs->shmid_file[0]){
fp = fopen(pibs->shmid_file, "w");
if (fp) {
fprintf(fp,"%d",pibs->shmid);
fclose(fp);
}
//TODO error handling
}
//TODO attach to it and bzero it
//setup the tables
return pibs->shmid;
}