diff options
Diffstat (limited to 'usr.sbin/mount_portalfs/pt_file.c')
-rw-r--r-- | usr.sbin/mount_portalfs/pt_file.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/usr.sbin/mount_portalfs/pt_file.c b/usr.sbin/mount_portalfs/pt_file.c new file mode 100644 index 0000000..270f812 --- /dev/null +++ b/usr.sbin/mount_portalfs/pt_file.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * All rights reserved. + * + * This code is derived from software donated to Berkeley by + * Jan-Simon Pendry. + * + * 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. + * + * @(#)pt_file.c 8.3 (Berkeley) 7/3/94 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <fcntl.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/param.h> +#include <sys/syslog.h> + +#include "portald.h" + +int portal_file(struct portal_cred *pcr, + char *key, char **v, int so __unused, int *fdp) +{ + int fd; + char pbuf[MAXPATHLEN]; + int error; + struct portal_cred save_area; + + pbuf[0] = '/'; + strcpy(pbuf+1, key + (v[1] ? strlen(v[1]) : 0)); + +#ifdef DEBUG + printf("path = %s, uid = %d, gid = %d\n", pbuf, pcr->pcr_uid, pcr->pcr_groups[0]); + printf ("fflag = %x, oflag = %x\n", pcr->pcr_flag, (pcr->pcr_flag)-1); +#endif + + if (set_user_credentials(pcr, &save_area) < 0) + return (errno); + + /* dmb convert kernel flags to oflags, see <fcntl.h> */ + fd = open(pbuf, (pcr->pcr_flag)-1, 0777); + if (fd < 0) + error = errno; + else + error = 0; + + if (restore_credentials(&save_area) < 0) { + error = errno; + if (fd >= 0) { + (void) close(fd); + fd = -1; + } + } + + if (error == 0) + *fdp = fd; + +#ifdef DEBUG + fprintf(stderr, "pt_file returns *fdp = %d, error = %d\n", *fdp, error); +#endif + + return (error); +} |