diff options
Diffstat (limited to 'cddl/compat/opensolaris/misc/fsshare.c')
-rw-r--r-- | cddl/compat/opensolaris/misc/fsshare.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/cddl/compat/opensolaris/misc/fsshare.c b/cddl/compat/opensolaris/misc/fsshare.c deleted file mode 100644 index 97f5e20f42f6..000000000000 --- a/cddl/compat/opensolaris/misc/fsshare.c +++ /dev/null @@ -1,262 +0,0 @@ -/*- - * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> - -#include <assert.h> -#include <errno.h> -#include <fcntl.h> -#include <fsshare.h> -#include <libutil.h> -#include <pathnames.h> /* _PATH_MOUNTDPID */ -#include <signal.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> - -#define FILE_HEADER "# !!! DO NOT EDIT THIS FILE MANUALLY !!!\n\n" -#define OPTSSIZE 1024 -#define MAXLINESIZE (PATH_MAX + OPTSSIZE) - -static void -restart_mountd(void) -{ - struct pidfh *pfh; - pid_t mountdpid; - - pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &mountdpid); - if (pfh != NULL) { - /* Mountd is not running. */ - pidfile_remove(pfh); - return; - } - if (errno != EEXIST) { - /* Cannot open pidfile for some reason. */ - return; - } - /* We have mountd(8) PID in mountdpid varible. */ - kill(mountdpid, SIGHUP); -} - -/* - * Read one line from a file. Skip comments, empty lines and a line with a - * mountpoint specified in the 'skip' argument. - */ -static char * -zgetline(FILE *fd, const char *skip) -{ - static char line[MAXLINESIZE]; - size_t len, skiplen; - char *s, last; - - if (skip != NULL) - skiplen = strlen(skip); - for (;;) { - s = fgets(line, sizeof(line), fd); - if (s == NULL) - return (NULL); - /* Skip empty lines and comments. */ - if (line[0] == '\n' || line[0] == '#') - continue; - len = strlen(line); - if (line[len - 1] == '\n') - line[len - 1] = '\0'; - last = line[skiplen]; - /* Skip the given mountpoint. */ - if (skip != NULL && strncmp(skip, line, skiplen) == 0 && - (last == '\t' || last == ' ' || last == '\0')) { - continue; - } - break; - } - return (line); -} - -/* - * Function translate options to a format acceptable by exports(5), eg. - * - * -ro -network=192.168.0.0 -mask=255.255.255.0 -maproot=0 freefall.freebsd.org 69.147.83.54 - * - * Accepted input formats: - * - * ro,network=192.168.0.0,mask=255.255.255.0,maproot=0,freefall.freebsd.org - * ro network=192.168.0.0 mask=255.255.255.0 maproot=0 freefall.freebsd.org - * -ro,-network=192.168.0.0,-mask=255.255.255.0,-maproot=0,freefall.freebsd.org - * -ro -network=192.168.0.0 -mask=255.255.255.0 -maproot=0 freefall.freebsd.org - * - * Recognized keywords: - * - * ro, maproot, mapall, mask, network, sec, alldirs, public, webnfs, index, quiet - * - */ -static const char *known_opts[] = { "ro", "maproot", "mapall", "mask", - "network", "sec", "alldirs", "public", "webnfs", "index", "quiet", NULL }; -static char * -translate_opts(const char *shareopts) -{ - static char newopts[OPTSSIZE]; - char oldopts[OPTSSIZE]; - char *o, *s = NULL; - unsigned int i; - size_t len; - - strlcpy(oldopts, shareopts, sizeof(oldopts)); - newopts[0] = '\0'; - s = oldopts; - while ((o = strsep(&s, "-, ")) != NULL) { - if (o[0] == '\0') - continue; - for (i = 0; known_opts[i] != NULL; i++) { - len = strlen(known_opts[i]); - if (strncmp(known_opts[i], o, len) == 0 && - (o[len] == '\0' || o[len] == '=')) { - strlcat(newopts, "-", sizeof(newopts)); - break; - } - } - strlcat(newopts, o, sizeof(newopts)); - strlcat(newopts, " ", sizeof(newopts)); - } - return (newopts); -} - -static int -fsshare_main(const char *file, const char *mountpoint, const char *shareopts, - int share) -{ - char tmpfile[PATH_MAX]; - char *line; - FILE *newfd, *oldfd; - int fd, error; - - newfd = oldfd = NULL; - error = 0; - - /* - * Create temporary file in the same directory, so we can atomically - * rename it. - */ - if (strlcpy(tmpfile, file, sizeof(tmpfile)) >= sizeof(tmpfile)) - return (ENAMETOOLONG); - if (strlcat(tmpfile, ".XXXXXXXX", sizeof(tmpfile)) >= sizeof(tmpfile)) - return (ENAMETOOLONG); - fd = mkstemp(tmpfile); - if (fd == -1) - return (errno); - /* - * File name is random, so we don't really need file lock now, but it - * will be needed after rename(2). - */ - error = flock(fd, LOCK_EX); - assert(error == 0 || (error == -1 && errno == EOPNOTSUPP)); - newfd = fdopen(fd, "r+"); - assert(newfd != NULL); - /* Open old exports file. */ - oldfd = fopen(file, "r"); - if (oldfd == NULL) { - if (share) { - if (errno != ENOENT) { - error = errno; - goto out; - } - } else { - /* If there is no exports file, ignore the error. */ - if (errno == ENOENT) - errno = 0; - error = errno; - goto out; - } - } else { - error = flock(fileno(oldfd), LOCK_EX); - assert(error == 0 || (error == -1 && errno == EOPNOTSUPP)); - error = 0; - } - - /* Place big, fat warning at the begining of the file. */ - fprintf(newfd, "%s", FILE_HEADER); - while (oldfd != NULL && (line = zgetline(oldfd, mountpoint)) != NULL) - fprintf(newfd, "%s\n", line); - if (oldfd != NULL && ferror(oldfd) != 0) { - error = ferror(oldfd); - goto out; - } - if (ferror(newfd) != 0) { - error = ferror(newfd); - goto out; - } - if (share) { - fprintf(newfd, "%s\t%s\n", mountpoint, - translate_opts(shareopts)); - } - -out: - if (error != 0) - unlink(tmpfile); - else { - if (rename(tmpfile, file) == -1) { - error = errno; - unlink(tmpfile); - } else { - fflush(newfd); - /* - * Send SIGHUP to mountd, but unlock exports file later. - */ - restart_mountd(); - } - } - if (oldfd != NULL) { - flock(fileno(oldfd), LOCK_UN); - fclose(oldfd); - } - if (newfd != NULL) { - flock(fileno(newfd), LOCK_UN); - fclose(newfd); - } - return (error); -} - -/* - * Add the given mountpoint to the given exports file. - */ -int -fsshare(const char *file, const char *mountpoint, const char *shareopts) -{ - - return (fsshare_main(file, mountpoint, shareopts, 1)); -} - -/* - * Remove the given mountpoint from the given exports file. - */ -int -fsunshare(const char *file, const char *mountpoint) -{ - - return (fsshare_main(file, mountpoint, NULL, 0)); -} |