securityos/public/Users/Public/Sistemas/1º Linux/Linux-0.0.1/fs/stat.c

52 lines
1.2 KiB
C

#include <errno.h>
#include <sys/stat.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <asm/segment.h>
static int cp_stat(struct m_inode * inode, struct stat * statbuf)
{
struct stat tmp;
int i;
verify_area(statbuf,sizeof (* statbuf));
tmp.st_dev = inode->i_dev;
tmp.st_ino = inode->i_num;
tmp.st_mode = inode->i_mode;
tmp.st_nlink = inode->i_nlinks;
tmp.st_uid = inode->i_uid;
tmp.st_gid = inode->i_gid;
tmp.st_rdev = inode->i_zone[0];
tmp.st_size = inode->i_size;
tmp.st_atime = inode->i_atime;
tmp.st_mtime = inode->i_mtime;
tmp.st_ctime = inode->i_ctime;
for (i=0 ; i<sizeof (tmp) ; i++)
put_fs_byte(((char *) &tmp)[i],&((char *) statbuf)[i]);
return (0);
}
int sys_stat(char * filename, struct stat * statbuf)
{
int i;
struct m_inode * inode;
if (!(inode=namei(filename)))
return -ENOENT;
i=cp_stat(inode,statbuf);
iput(inode);
return i;
}
int sys_fstat(unsigned int fd, struct stat * statbuf)
{
struct file * f;
struct m_inode * inode;
if (fd >= NR_OPEN || !(f=current->filp[fd]) || !(inode=f->f_inode))
return -ENOENT;
return cp_stat(inode,statbuf);
}