Update the program to display the file size, owner ID, and file permission of th

Question

Update the program to display the file size, owner ID, and file permission of the file.


* Abstract: This program demonstrates the usage of stat system call.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
struct stat buf;

if (stat(argv[1], &buf) < 0 ) {
printf("Error ");
exit(-1);
}

if (S_ISREG(buf.st_mode))
{
printf("%s: regular file ", argv[1]);
}
else if (S_ISDIR(buf.st_mode))
{
printf("%s: directory ", argv[1]);
}
else
{
printf("%s: unknown type ", argv[1]);
}

return 0;
}

Explanation / Answer

[color=blue] > > CODE: > > #include > #include > #include > #include > #include > #include > #include > #include > > int main(int argc, char** argv) > { > > struct stat file; > stat(argv[1], &file); > > char path[PATH_MAX]; > > int Size = file.st_size; > int OwnerId = file.st_uid; > int GroupId = file.st_gid; > int Permissions = file.st_mode; > int LastRead = file.st_atime; > int LastWrite = file.st_mtime; > int LastChange = file.st_ctime; > > if(errno == 2) > printf("ERROR: No such file or directory "); > else if(errno == 13) > printf("Permission Denied "); > else if(errno == 20) > printf("Not a directory "); > else > { > printf(" Absolute Pathname: %s", argv[1], path); > printf(" File Size (bytes): %d", Size); > printf(" File Owner ID: %d", OwnerId); > printf(" File Group ID: %d", GroupId); > printf(" File Permissions: %d", Permissions); > printf(" Time of Last Read: %d", LastRead); > printf(" Time of Last Write: %d", LastWrite); > printf(" Time of Last Change: %d ", LastChange); > } > > return(0); > > }[/color]

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