/*
FUSE: Filesystem in Userspace
- Copyright (C) 2005 Csaba Henk <csaba.henk@creo.hu>
+ Copyright (C) 2005-2006 Csaba Henk <csaba.henk@creo.hu>
This program can be distributed under the terms of the GNU LGPL.
See the file COPYING.LIB.
*/
#include "fuse.h"
+#include "fuse_opt.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <stddef.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/wait.h>
+#include <string.h>
#define FUSERMOUNT_PROG "mount_fusefs"
+#define FUSE_DEV_TRUNK "/dev/fuse"
+
+enum {
+ KEY_ALLOW_ROOT,
+ KEY_RO,
+ KEY_HELP,
+ KEY_VERSION,
+ KEY_KERN
+};
+
+struct mount_opts {
+ int allow_other;
+ int allow_root;
+ int ishelp;
+ char *kernel_opts;
+};
+
+static const struct fuse_opt fuse_mount_opts[] = {
+ { "allow_other", offsetof(struct mount_opts, allow_other), 1 },
+ { "allow_root", offsetof(struct mount_opts, allow_root), 1 },
+ FUSE_OPT_KEY("allow_root", KEY_ALLOW_ROOT),
+ FUSE_OPT_KEY("-r", KEY_RO),
+ FUSE_OPT_KEY("-h", KEY_HELP),
+ FUSE_OPT_KEY("--help", KEY_HELP),
+ FUSE_OPT_KEY("-V", KEY_VERSION),
+ FUSE_OPT_KEY("--version", KEY_VERSION),
+ /* standard FreeBSD mount options */
+ FUSE_OPT_KEY("dev", KEY_KERN),
+ FUSE_OPT_KEY("async", KEY_KERN),
+ FUSE_OPT_KEY("atime", KEY_KERN),
+ FUSE_OPT_KEY("dev", KEY_KERN),
+ FUSE_OPT_KEY("exec", KEY_KERN),
+ FUSE_OPT_KEY("suid", KEY_KERN),
+ FUSE_OPT_KEY("symfollow", KEY_KERN),
+ FUSE_OPT_KEY("rdonly", KEY_KERN),
+ FUSE_OPT_KEY("sync", KEY_KERN),
+ FUSE_OPT_KEY("union", KEY_KERN),
+ FUSE_OPT_KEY("userquota", KEY_KERN),
+ FUSE_OPT_KEY("groupquota", KEY_KERN),
+ FUSE_OPT_KEY("clusterr", KEY_KERN),
+ FUSE_OPT_KEY("clusterw", KEY_KERN),
+ FUSE_OPT_KEY("suiddir", KEY_KERN),
+ FUSE_OPT_KEY("snapshot", KEY_KERN),
+ FUSE_OPT_KEY("multilabel", KEY_KERN),
+ FUSE_OPT_KEY("acls", KEY_KERN),
+ FUSE_OPT_KEY("force", KEY_KERN),
+ FUSE_OPT_KEY("update", KEY_KERN),
+ FUSE_OPT_KEY("ro", KEY_KERN),
+ FUSE_OPT_KEY("rw", KEY_KERN),
+ FUSE_OPT_KEY("auto", KEY_KERN),
+ /* stock FBSD mountopt parsing routine lets anything be negated... */
+ FUSE_OPT_KEY("nodev", KEY_KERN),
+ FUSE_OPT_KEY("noasync", KEY_KERN),
+ FUSE_OPT_KEY("noatime", KEY_KERN),
+ FUSE_OPT_KEY("nodev", KEY_KERN),
+ FUSE_OPT_KEY("noexec", KEY_KERN),
+ FUSE_OPT_KEY("nosuid", KEY_KERN),
+ FUSE_OPT_KEY("nosymfollow", KEY_KERN),
+ FUSE_OPT_KEY("nordonly", KEY_KERN),
+ FUSE_OPT_KEY("nosync", KEY_KERN),
+ FUSE_OPT_KEY("nounion", KEY_KERN),
+ FUSE_OPT_KEY("nouserquota", KEY_KERN),
+ FUSE_OPT_KEY("nogroupquota", KEY_KERN),
+ FUSE_OPT_KEY("noclusterr", KEY_KERN),
+ FUSE_OPT_KEY("noclusterw", KEY_KERN),
+ FUSE_OPT_KEY("nosuiddir", KEY_KERN),
+ FUSE_OPT_KEY("nosnapshot", KEY_KERN),
+ FUSE_OPT_KEY("nomultilabel", KEY_KERN),
+ FUSE_OPT_KEY("noacls", KEY_KERN),
+ FUSE_OPT_KEY("noforce", KEY_KERN),
+ FUSE_OPT_KEY("noupdate", KEY_KERN),
+ FUSE_OPT_KEY("noro", KEY_KERN),
+ FUSE_OPT_KEY("norw", KEY_KERN),
+ FUSE_OPT_KEY("noauto", KEY_KERN),
+ /* options supported under both Linux and FBSD */
+ FUSE_OPT_KEY("allow_other", KEY_KERN),
+ FUSE_OPT_KEY("default_permissions", KEY_KERN),
+ /* FBSD FUSE specific mount options */
+ FUSE_OPT_KEY("private", KEY_KERN),
+ FUSE_OPT_KEY("neglect_shares", KEY_KERN),
+ FUSE_OPT_KEY("push_symlinks_in", KEY_KERN),
+ /* Linux specific mount options, but let just the mount util handle them */
+ FUSE_OPT_KEY("fsname=", KEY_KERN),
+ FUSE_OPT_KEY("nonempty", KEY_KERN),
+ FUSE_OPT_KEY("large_read", KEY_KERN),
+ FUSE_OPT_KEY("max_read=", KEY_KERN),
+ FUSE_OPT_END
+};
+
+static void mount_help(void)
+{
+ fprintf(stderr,
+ " -o allow_root allow access to root\n"
+ );
+ system(FUSERMOUNT_PROG " --help");
+ fputc('\n', stderr);
+}
+
+static void mount_version(void)
+{
+ system(FUSERMOUNT_PROG " --version");
+}
+
+static int fuse_mount_opt_proc(void *data, const char *arg, int key,
+ struct fuse_args *outargs)
+{
+ struct mount_opts *mo = data;
+
+ switch (key) {
+ case KEY_ALLOW_ROOT:
+ if (fuse_opt_add_opt(&mo->kernel_opts, "allow_other") == -1 ||
+ fuse_opt_add_arg(outargs, "-oallow_root") == -1)
+ return -1;
+ return 0;
+
+ case KEY_RO:
+ arg = "ro";
+ /* fall through */
+
+ case KEY_KERN:
+ return fuse_opt_add_opt(&mo->kernel_opts, arg);
+
+ case KEY_HELP:
+ mount_help();
+ mo->ishelp = 1;
+ break;
+
+ case KEY_VERSION:
+ mount_version();
+ mo->ishelp = 1;
+ break;
+ }
+ return 1;
+}
void fuse_unmount(const char *mountpoint)
{
FILE *sf;
int rv;
char *seekscript =
- "/usr/bin/fstat /dev/fuse* | "
+ "/usr/bin/fstat " FUSE_DEV_TRUNK "* | "
"/usr/bin/awk 'BEGIN{ getline; if (! ($3 == \"PID\" && $10 == \"NAME\")) exit 1; }; "
" { if ($3 == %d) print $10; }' | "
"/usr/bin/sort | "
"/usr/bin/uniq | "
"/usr/bin/awk '{ i += 1; if (i > 1){ exit 1; }; printf; }; END{ if (i == 0) exit 1; }'";
+ (void) mountpoint;
+
asprintf(&ssc, seekscript, getpid());
errno = 0;
system(umount_cmd);
}
-int fuse_mount(const char *mountpoint, const char *opts)
+int fuse_mount_core(const char *mountpoint, const char *opts)
{
const char *mountprog = FUSERMOUNT_PROG;
int fd;
dev = getenv("FUSE_DEV_NAME");
if (! dev)
- dev = "/dev/fuse";
+ dev = FUSE_DEV_TRUNK;
if ((fd = open(dev, O_RDWR)) < 0) {
perror("fuse: failed to open fuse device");
argv[a++] = fdnam;
argv[a++] = mountpoint;
argv[a++] = NULL;
- setenv("MOUNT_FUSEFS_SAFE", "1", 1);
- setenv("MOUNT_FUSEFS_NOINTERACTIVE", "1", 1);
execvp(mountprog, (char **) argv);
perror("fuse: failed to exec mount program");
exit(1);
out:
return fd;
}
+
+int fuse_mount(const char *mountpoint, struct fuse_args *args)
+{
+ struct mount_opts mo;
+ int res = -1;
+
+ memset(&mo, 0, sizeof(mo));
+ /* mount util should not try to spawn the daemon */
+ setenv("MOUNT_FUSEFS_SAFE", "1", 1);
+ /* to notify the mount util it's called from lib */
+ setenv("MOUNT_FUSEFS_CALL_BY_LIB", "1", 1);
+
+ if (args &&
+ fuse_opt_parse(args, &mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)
+ return -1;
+
+ if (mo.allow_other && mo.allow_root) {
+ fprintf(stderr, "fuse: 'allow_other' and 'allow_root' options are mutually exclusive\n");
+ goto out;
+ }
+ if (mo.ishelp)
+ return 0;
+
+ res = fuse_mount_core(mountpoint, mo.kernel_opts);
+ out:
+ free(mo.kernel_opts);
+ return res;
+}
projects / qemu-gpiodev / libfuse.git / commitdiff