diff options
Diffstat (limited to 'lib/libc/gen/getvfsbyname.c')
| -rw-r--r-- | lib/libc/gen/getvfsbyname.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/libc/gen/getvfsbyname.c b/lib/libc/gen/getvfsbyname.c new file mode 100644 index 0000000..0d896bb --- /dev/null +++ b/lib/libc/gen/getvfsbyname.c @@ -0,0 +1,76 @@ +/* + * 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. + * 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)kvm_getvfsbyname.c 8.1 (Berkeley) 4/3/95"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/sysctl.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +/* + * Given a filesystem name, determine if it is resident in the kernel, + * and if it is resident, return its xvfsconf structure. + */ +int +getvfsbyname(fsname, vfcp) + const char *fsname; + struct xvfsconf *vfcp; +{ + struct xvfsconf *xvfsp; + size_t buflen; + int cnt, i; + + if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) + return (-1); + xvfsp = malloc(buflen); + if (xvfsp == NULL) + return (-1); + if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { + free(xvfsp); + return (-1); + } + cnt = buflen / sizeof(struct xvfsconf); + for (i = 0; i < cnt; i++) { + if (strcmp(fsname, xvfsp[i].vfc_name) == 0) { + memcpy(vfcp, xvfsp + i, sizeof(struct xvfsconf)); + free(xvfsp); + return (0); + } + } + free(xvfsp); + errno = ENOENT; + return (-1); +} |
