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/*
@Author : ouadimjamal@gmail.com
@date : December 2015
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation. No representations are made about the suitability of this
software for any purpose. It is provided "as is" without express or
implied warranty.
*/
#include "pmparser.h"
#include <stdio.h>
#include <stdlib.h>
#include <plugin.h>
procmaps_iterator* pmparser_parse(csnd::Csound* csound, int pid){
procmaps_iterator* maps_it = (procmaps_iterator*) csound->malloc(sizeof(procmaps_iterator));
char maps_path[500];
if(pid>=0 ){
sprintf(maps_path,"/proc/%d/maps",pid);
}else{
sprintf(maps_path,"/proc/self/maps");
}
FILE* file=fopen(maps_path,"r");
if(!file){
fprintf(stderr,"pmparser : cannot open the memory maps, %s\n",strerror(errno));
return NULL;
}
int ind=0;char buf[PROCMAPS_LINE_MAX_LENGTH];
int c;
procmaps_struct* list_maps=NULL;
procmaps_struct* tmp;
procmaps_struct* current_node=list_maps;
char addr1[20],addr2[20], perm[8], offset[20], dev[10],inode[30],pathname[PATH_MAX];
while( !feof(file) ){
fgets(buf,PROCMAPS_LINE_MAX_LENGTH,file);
//allocate a node
tmp=(procmaps_struct*)csound->malloc(sizeof(procmaps_struct));
//fill the node
_pmparser_split_line(buf,addr1,addr2,perm,offset, dev,inode,pathname);
//printf("#%s",buf);
//printf("%s-%s %s %s %s %s\t%s\n",addr1,addr2,perm,offset,dev,inode,pathname);
//addr_start & addr_end
unsigned long l_addr_start;
sscanf(addr1,"%lx",(long unsigned *)&tmp->addr_start );
sscanf(addr2,"%lx",(long unsigned *)&tmp->addr_end );
//size
tmp->length=(unsigned long)(tmp->addr_end-tmp->addr_start);
//perm
strcpy(tmp->perm,perm);
tmp->is_r=(perm[0]=='r');
tmp->is_w=(perm[1]=='w');
tmp->is_x=(perm[2]=='x');
tmp->is_p=(perm[3]=='p');
//offset
sscanf(offset,"%lx",&tmp->offset );
//device
strcpy(tmp->dev,dev);
//inode
tmp->inode=atoi(inode);
//pathname
strcpy(tmp->pathname,pathname);
tmp->next=NULL;
//attach the node
if(ind==0){
list_maps=tmp;
list_maps->next=NULL;
current_node=list_maps;
}
current_node->next=tmp;
current_node=tmp;
ind++;
//printf("%s",buf);
}
//close file
fclose(file);
//g_last_head=list_maps;
maps_it->head = list_maps;
maps_it->current = list_maps;
return maps_it;
}
procmaps_struct* pmparser_next(procmaps_iterator* p_procmaps_it){
if(p_procmaps_it->current == NULL)
return NULL;
procmaps_struct* p_current = p_procmaps_it->current;
p_procmaps_it->current = p_procmaps_it->current->next;
return p_current;
/*
if(g_current==NULL){
g_current=g_last_head;
}else
g_current=g_current->next;
return g_current;
*/
}
void pmparser_free(csnd::Csound* csound, procmaps_iterator* p_procmaps_it){
procmaps_struct* maps_list = p_procmaps_it->head;
if(maps_list==NULL) return ;
procmaps_struct* act=maps_list;
procmaps_struct* nxt=act->next;
while(act!=NULL){
csound->free(act);
act=nxt;
if(nxt!=NULL)
nxt=nxt->next;
}
}
void _pmparser_split_line(
char*buf,char*addr1,char*addr2,
char*perm,char* offset,char* device,char*inode,
char* pathname){
//
int orig=0;
int i=0;
//addr1
while(buf[i]!='-'){
addr1[i-orig]=buf[i];
i++;
}
addr1[i]='\0';
i++;
//addr2
orig=i;
while(buf[i]!='\t' && buf[i]!=' '){
addr2[i-orig]=buf[i];
i++;
}
addr2[i-orig]='\0';
//perm
while(buf[i]=='\t' || buf[i]==' ')
i++;
orig=i;
while(buf[i]!='\t' && buf[i]!=' '){
perm[i-orig]=buf[i];
i++;
}
perm[i-orig]='\0';
//offset
while(buf[i]=='\t' || buf[i]==' ')
i++;
orig=i;
while(buf[i]!='\t' && buf[i]!=' '){
offset[i-orig]=buf[i];
i++;
}
offset[i-orig]='\0';
//dev
while(buf[i]=='\t' || buf[i]==' ')
i++;
orig=i;
while(buf[i]!='\t' && buf[i]!=' '){
device[i-orig]=buf[i];
i++;
}
device[i-orig]='\0';
//inode
while(buf[i]=='\t' || buf[i]==' ')
i++;
orig=i;
while(buf[i]!='\t' && buf[i]!=' '){
inode[i-orig]=buf[i];
i++;
}
inode[i-orig]='\0';
//pathname
pathname[0]='\0';
while(buf[i]=='\t' || buf[i]==' ')
i++;
orig=i;
while(buf[i]!='\t' && buf[i]!=' ' && buf[i]!='\n'){
pathname[i-orig]=buf[i];
i++;
}
pathname[i-orig]='\0';
}
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