diff options
Diffstat (limited to 'lib/libc/gen/getvfsbyname.c')
| -rw-r--r-- | lib/libc/gen/getvfsbyname.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/libc/gen/getvfsbyname.c b/lib/libc/gen/getvfsbyname.c new file mode 100644 index 0000000..a8f6913 --- /dev/null +++ b/lib/libc/gen/getvfsbyname.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1995 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)kvm_getvfsbyname.c 8.1 (Berkeley) 4/3/95"; +#endif +static const char rcsid[] = + "$FreeBSD$"; +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/sysctl.h> +#include <errno.h> + +/* + * Given a filesystem name, determine if it is resident in the kernel, + * and if it is resident, return its vfsconf structure. + */ +getvfsbyname(fsname, vfcp) + const char *fsname; + struct vfsconf *vfcp; +{ +#ifdef __NETBSD_SYSCALLS + errno = ENOSYS; +#else + int name[4], maxtypenum, cnt; + size_t buflen; + + name[0] = CTL_VFS; + name[1] = VFS_GENERIC; + name[2] = VFS_MAXTYPENUM; + buflen = 4; + if (sysctl(name, 3, &maxtypenum, &buflen, (void *)0, (size_t)0) < 0) + return (-1); + name[2] = VFS_CONF; + buflen = sizeof *vfcp; + for (cnt = 0; cnt < maxtypenum; cnt++) { + name[3] = cnt; + if (sysctl(name, 4, vfcp, &buflen, (void *)0, (size_t)0) < 0) { + if (errno != EOPNOTSUPP) + return (-1); + continue; + } + if (!strcmp(fsname, vfcp->vfc_name)) + return (0); + } + errno = ENOENT; +#endif + return (-1); +} |
