/* Write a program in Python/C++ to read display the i-node information for a given text file,
image file.*/
//by Ankit Singhaniya
#include<iostream>
#include<sys/stat.h>
using namespace std;
int main()
{
char fname[255];
cout<<“Enter absolute path for your file: “; //eg: /home/student/g1q4.cpp
cin>>fname;
struct stat var; //a variable that can store the stat information if the file we provide.
int ret=stat(fname,&var); //call the fuction stat for file name ‘fname’ and store the values in ‘var’.
if(ret<0)
{
cout<<“System call ‘stat’ exited with an error code “<<ret<<endl;
}
else
{
cout<<“Device id: “<<var.st_dev<<endl;
cout<<“Inode number: “<<var.st_ino<<endl;
cout<<“Mode: “<<var.st_mode<<endl;
cout<<“UID: “<<var.st_uid<<endl;
cout<<“GID: “<<var.st_gid<<endl;
cout<<“Size: “<<var.st_size<<endl;
}
//you can get this structure by $man fstat (trick, not to be used in exams)
struct stat
{
dev_t st_dev; /* ID of device containing file */
ino_t st_ino; /* inode number */
mode_t st_mode; /* protection */
nlink_t st_nlink; /* number of hard links */
uid_t st_uid; /* user ID of owner */
gid_t st_gid; /* group ID of owner */
off_t st_size; /* total size, in bytes */
blksize_t st_blksize; /* blocksize for filesystem I/O */
blkcnt_t st_blocks; /* number of 512B blocks allocated */
};
}
______________________________________________________________________
output samples:
singhaniya@singhaniya-SVF14A15SNB:~/pl1$ g++ g1q4.cpp
singhaniya@singhaniya-SVF14A15SNB:~/pl1$ ./a.out
Enter absolute path for your file: /home/singhaniya/pl1/g1q4.cpp
Device id: 2054
Inode number: 791790
Mode: 33204
UID: 1000
GID: 1000
Size: 1532
singhaniya@singhaniya-SVF14A15SNB:~/pl1$ ./a.out
Enter absolute path for your file: /home/dfsd
System call ‘stat’ exited with an error code -1
singhaniya@singhaniya-SVF14A15SNB:~/pl1$
ankitsinghaniyaz 