a lightweight library to parse Linux's /proc/[pid]/maps file, which contains the memory map of a process
A file containing the currently mapped memory regions and their access permissions. See mmap(2) for some further information about memory mappings. #memory map region proc_maps_parser represents a memory region with this C structure.
struct procmaps_struct{
void* addr_start; //< start address of the region
void* addr_end; //< end address of the region
unsigned long length; //< length of the region by bytes
char perm[5]; //< permissions rwxp
short is_r; //< is readible
short is_w; //< is writable
short is_x; //< is executable
short is_p; //< is private
long offset; //< offset
char dev[12]; //< the device that backs the region, format major:minor
int inode; //< inode of the file that backs the area
char pathname[600];//< the path of the file that backs the area
//The next region in the list
struct procmaps_struct* next; //<handler of the chinaed list
}After cloning, building this project is possible as follows:
$ cd [proc_maps_parser checkout]
$ make # to build it as a static library
$ make examples # to build both the static library and the example program
Optionally, the BUILD_DIR environment variable can be specified when running make to build the static library somewhere else. By default, this is set to a build/ directory in the root of the source tree.
from ./examples/map.c
int pid=-1; //-1 to use the running process id, use pid>0 to list the map of another process
procmaps_iterator* maps = pmparser_parse(pid);
if(maps==NULL){
printf ("[map]: cannot parse the memory map of %d\n",pid);
return -1;
}
//iterate over areas
procmaps_struct* maps_tmp=NULL;
while( (maps_tmp = pmparser_next(maps)) != NULL){
pmparser_print(maps_tmp,0);
printf("\n~~~~~~~~~~~~~~~~~~~~~~~~~\n");
}
//mandatory: should free the list
pmparser_free(maps);