minix/lib/libvtreefs/stadir.c
2012-03-25 21:58:14 +02:00

91 lines
2.5 KiB
C

/* VTreeFS - stadir.c - by Alen Stojanov and David van Moolenbroek */
#include "inc.h"
#include <time.h>
#include <sys/statfs.h>
#include <sys/statvfs.h>
#include <string.h>
/*===========================================================================*
* fs_stat *
*===========================================================================*/
int fs_stat(void)
{
/* Retrieve file status.
*/
char path[PATH_MAX];
struct stat statbuf;
time_t cur_time;
struct inode *node;
int r;
if ((node = find_inode(fs_m_in.REQ_INODE_NR)) == NULL)
return EINVAL;
memset(&statbuf, 0, sizeof(struct stat));
/* Fill in the basic info. */
statbuf.st_dev = fs_dev;
statbuf.st_ino = get_inode_number(node);
statbuf.st_mode = node->i_stat.mode;
statbuf.st_nlink = !is_inode_deleted(node);
statbuf.st_uid = node->i_stat.uid;
statbuf.st_gid = node->i_stat.gid;
statbuf.st_rdev = (dev_t) node->i_stat.dev;
statbuf.st_size = node->i_stat.size;
/* If it is a symbolic link, return the size of the link target. */
if (S_ISLNK(node->i_stat.mode) && vtreefs_hooks->rdlink_hook != NULL) {
r = vtreefs_hooks->rdlink_hook(node, path, sizeof(path),
get_inode_cbdata(node));
if (r == OK)
statbuf.st_size = strlen(path);
}
/* Take the current time as file time for all files. */
cur_time = time(NULL);
statbuf.st_atime = cur_time;
statbuf.st_mtime = cur_time;
statbuf.st_ctime = cur_time;
/* Copy the struct to user space. */
return sys_safecopyto(fs_m_in.m_source, fs_m_in.REQ_GRANT, 0,
(vir_bytes) &statbuf, (phys_bytes) sizeof(statbuf), D);
}
/*===========================================================================*
* fs_fstatfs *
*===========================================================================*/
int fs_fstatfs(void)
{
/* Retrieve file system statistics.
*/
struct statfs statfs;
memset(&statfs, 0, sizeof(statfs));
/* Copy the struct to user space. */
return sys_safecopyto(fs_m_in.m_source, fs_m_in.REQ_GRANT, 0,
(vir_bytes) &statfs, (phys_bytes) sizeof(statfs), D);
}
/*===========================================================================*
* fs_fstatfs *
*===========================================================================*/
int fs_statvfs(void)
{
/* Retrieve file system statistics.
*/
struct statvfs statvfs;
memset(&statvfs, 0, sizeof(statvfs));
statvfs.f_fsid = fs_dev;
statvfs.f_flag = ST_RDONLY | ST_NOTRUNC;
statvfs.f_namemax = PNAME_MAX;
return sys_safecopyto(fs_m_in.m_source, fs_m_in.REQ_GRANT, 0,
(vir_bytes) &statvfs, sizeof(statvfs), D);
}