int sysfile_linux_fstat64(int fd, struct linux_stat64 __user * buf)
{
struct mm_struct *mm = pls_read(current)->mm;
int ret;
struct stat __local_stat, *kstat = &__local_stat;
if ((ret = file_fstat(fd, kstat)) != 0) {
return -1;
}
struct linux_stat64 *kls = kmalloc(sizeof(struct linux_stat64));
if (!kls) {
return -1;
}
memset(kls, 0, sizeof(struct linux_stat64));
kls->st_ino = 1;
/* ucore never check access permision */
kls->st_mode = kstat->st_mode | 0777;
kls->st_nlink = kstat->st_nlinks;
kls->st_blksize = 512;
kls->st_blocks = kstat->st_blocks;
kls->st_size = kstat->st_size;
ret = 0;
lock_mm(mm);
{
if (!copy_to_user(mm, buf, kls, sizeof(struct linux_stat64))) {
ret = -1;
}
}
unlock_mm(mm);
kfree(kls);
return ret;
}
/*
* Do an fstat on the file.
*/
int
wtap_fstat(wtap *wth, ws_statb64 *statb, int *err)
{
if (file_fstat((wth->fh == NULL) ? wth->random_fh : wth->fh,
statb, err) == -1)
return -1;
return 0;
}
/*
* Return the size of the file, as reported by the OS.
* (gint64, in case that's 64 bits.)
*/
gint64
wtap_file_size(wtap *wth, int *err)
{
ws_statb64 statb;
if (file_fstat((wth->fh == NULL) ? wth->random_fh : wth->fh,
&statb, err) == -1)
return -1;
return statb.st_size;
}
int fstat(int fd, FAR struct stat *buf)
{
FAR struct file *filep;
int ret;
/* Did we get a valid file descriptor? */
if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS)
{
#if CONFIG_NSOCKET_DESCRIPTORS > 0
/* Let the networking logic handle the fstat() */
ret = net_fstat(fd, buf);
if (ret < 0)
{
goto errout;
}
return OK;
#else
/* No networking... it is just a bad descriptor */
ret = -EBADF;
goto errout;
#endif
}
/* The descriptor is in a valid range for a file descriptor... do the
* fstat. First, get the file structure. Note that on failure,
* fs_getfilep() will set the errno variable.
*/
ret = fs_getfilep(fd, &filep);
if (ret < 0)
{
goto errout;
}
/* Perform the fstat operation */
ret = file_fstat(filep, buf);
/* Check if the fstat operation was successful */
if (ret >= 0)
{
/* Successfully fstat'ed the file */
return OK;
}
errout:
set_errno(-ret);
return ERROR;
}
/* sysfile_fstat - stat file */
int
sysfile_fstat(int fd, struct stat *__stat) {
struct mm_struct *mm = current->mm;
int ret;
struct stat __local_stat, *stat = &__local_stat;
if ((ret = file_fstat(fd, stat)) != 0) {
return ret;
}
lock_mm(mm);
{
if (!copy_to_user(mm, __stat, stat, sizeof(struct stat))) {
ret = -E_INVAL;
}
}
unlock_mm(mm);
return ret;
}
