/* Create a named pipe (FIFO) named PATH with protections MODE. */
int
mkfifo (const char *path, mode_t mode)
{
dev_t dev = 0;
return __xmknod (_MKNOD_VER, path, mode | S_IFIFO, &dev);
}
/* Create a device file named PATH relative to FD, with permission and
special bits MODE and device number DEV (which can be constructed
from major and minor device numbers with the `makedev' macro above). */
int
__xmknodat (int vers, int fd, const char *file, mode_t mode, dev_t * dev)
{
if (vers != _MKNOD_VER)
{
__set_errno (EINVAL);
return -1;
}
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
int result;
/* The FreeBSD mknod() system call cannot be used to create FIFOs; we
must use the mkfifo() system call for this purpose. */
if (S_ISFIFO (mode))
result = INLINE_SYSCALL (mkfifoat, 3, fd, file, mode);
else
result = INLINE_SYSCALL (mknodat, 4, fd, file, mode, *dev);
# ifndef __ASSUME_ATFCTS
if (result == -1 && errno == ENOSYS)
__have_atfcts = -1;
else
# endif
return result;
}
#ifndef __ASSUME_ATFCTS
if (fd != AT_FDCWD && file[0] != '/')
{
int mib[4];
size_t kf_len = 0;
char *kf_buf, *kf_bufp;
size_t filelen;
if (fd < 0)
{
__set_errno (EBADF);
return -1;
}
filelen = strlen (file);
if (__builtin_expect (filelen == 0, 0))
{
__set_errno (ENOENT);
return -1;
}
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_FILEDESC;
mib[3] = __getpid ();
if (__sysctl (mib, 4, NULL, &kf_len, NULL, 0) != 0)
{
__set_errno (ENOSYS);
return -1;
}
kf_buf = alloca (kf_len + filelen);
if (__sysctl (mib, 4, kf_buf, &kf_len, NULL, 0) != 0)
{
__set_errno (ENOSYS);
return -1;
}
kf_bufp = kf_buf;
while (kf_bufp < kf_buf + kf_len)
{
struct kinfo_file *kf = (struct kinfo_file *) (uintptr_t) kf_bufp;
if (kf->kf_fd == fd)
{
if (kf->kf_type != KF_TYPE_VNODE ||
kf->kf_vnode_type != KF_VTYPE_VDIR)
{
__set_errno (ENOTDIR);
return -1;
}
strcat (kf->kf_path, "/");
strcat (kf->kf_path, file);
file = kf->kf_path;
break;
}
kf_bufp += kf->kf_structsize;
}
if (kf_bufp >= kf_buf + kf_len)
{
__set_errno (EBADF);
return -1;
}
}
return __xmknod (vers, file, mode, dev);
#endif
}
int
__mknod (const char *path, mode_t mode, dev_t dev)
{
return __xmknod (_MKNOD_VER, path, mode, &dev);
}
int
attribute_hidden
__mknod (const char *path, mode_t mode, dev_t dev)
{
return __xmknod (_MKNOD_VER, path, mode, &dev);
}
