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#include <reent.h>
#include <unistd.h>
#include <errno.h>
#include "fd.h"
_ssize_t
write (int fdi, const void *buf, size_t cnt)
{
if (fdi < 0 || fdi >= _fd_size)
{
errno = EBADF;
return -1;
}
ss_mutex_lock (&_fd_lock);
struct _fd *fd = _fds[fdi];
if (! fd || ! fd->ops->pwrite)
{
errno = EBADF;
ss_mutex_unlock (&_fd_lock);
return -1;
}
if (cnt == 0)
{
ss_mutex_unlock (&_fd_lock);
return 0;
}
ss_mutex_lock (&fd->lock);
ss_mutex_unlock (&_fd_lock);
_ssize_t len = fd->ops->pwrite (fd, buf, cnt, fd->pos);
fd->pos += len;
ss_mutex_unlock (&fd->lock);
return len;
}
_ssize_t
_DEFUN (_write_r, (ptr, fd, buf, cnt),
struct _reent *ptr _AND
int fd _AND
_CONST _PTR buf _AND
size_t cnt)
{
return write (fd, buf, cnt);
}
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