Hello there, anyone here knows what is the function or library in Linux that corresponds to the win32 functions/library given bellow.
library
- #include <Windows.h>
functions
- GetDiskFreeSpaceEx（）、GetFileAttribute（）、GetModuleFileName（）、GetFileVersionInfoSize（）、GetFileVersion（ ）
Thank you!
See man fstat
fstat gives you struct stat for a given file. This struct has following info abt your file:
mode_t st_mode; /* File mode (see mknod(2)) */
ino_t st_ino; /* Inode number */
dev_t st_dev; /* ID of device containing */
/* a directory entry for this file */
dev_t st_rdev; /* ID of device */
/* This entry is defined only for */
/* char special or block special files */
nlink_t st_nlink; /* Number of links */
uid_t st_uid; /* User ID of the file's owner */
gid_t st_gid; /* Group ID of the file's group */
off_t st_size; /* File size in bytes */
time_t st_atime; /* Time of last access */
time_t st_mtime; /* Time of last data modification */
time_t st_ctime; /* Time of last file status change */
/* Times measured in seconds since */
/* 00:00:00 UTC, Jan. 1, 1970 */
long st_blksize; /* Preferred I/O block size */
blkcnt_t st_blocks; /* Number of 512 byte blocks allocated*/
char st_fstype[_ST_FSTYPSZ]; /* Null-terminated type of filesystem */It's a system call.
I tried to used the function to my hard drive but it's giving me a -1 return. I checked the mode it's both readable and writable for the root and ordinary users. T_T. *sigh*. What do you think is the problem? Here's my code.
//#include <sys/vfs.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <iostream>
using namespace std;
struct stat buffer;
int status;
off_t size;
blkcnt_t fblock;
int main(){
size = buffer.st_size;
fblock = buffer.st_blocks;
int fildes = open("/dev/hda", O_RDWR);
status = fstat(fildes, &buffer);
cout << "size: " << size << endl;
cout << "free blocks: " << fblock << endl;
cout << status << endl;
return 0;
}In addition, I'm getting a 0 in both the size and the free blocks. T_T
>> int fildes = open("/dev/hda", O_RDWR);
Seems like you're trying to access a special file (device)
I donno abt those. Check is the man page says anything abt it.
There are at least 2 attributes that indicate this:
1. dev_t st_rdev; /* ID of device */
2. char st_fstype[_ST_FSTYPSZ]; /* Null-terminated type of filesystem */
But they only seem to indicate that it's a special file.
> GetDiskFreeSpaceEx（）
Dunno, but the 'df' command line program provides this information. If you could locate the Linux source for that program, perhaps you'll find out how it's done.
> GetFileAttribute（）
Use the stat() API as described already. Should be good for regular files and directories.
Remember, if it returns -1, then look at the 'errno' variable to find out why it failed.
> GetModuleFileName（）
The nearest equivalent is argv[0], as passed to your main()
> GetFileVersionInfoSize（）
> GetFileVersion（ ）
AFAIK, there is no consistent way of putting version information into a file. Shared libraries in particular encode the version into the filename, but that's about it.
@thekashyap - Oh, I see. I'm actually dealing with the cd/dvd-rw drive and the media inside it. As what I have read, the function GetDiskFreeSpaceEx( ) has a parameter that deals with the free space in the cd/dvd media, but I'm not quite sure of that. I saw a function which is,I think, quite similar to fstat(), it's statvfs and fstatvfs. I tried both but they still give the same 0 value on the size and the free blocks. *sigh*.
@Salem - I'll try these one dude.
@thekashyap and Salem - Thanks! :)
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