static int
fuse_mount_sys (const char *mountpoint, char *fsname,
unsigned long mountflags, char *mnt_param, int fd)
{
int ret = -1;
unsigned mounted = 0;
char *mnt_param_mnt = NULL;
char *fstype = "fuse.glusterfs";
char *source = fsname;
ret = asprintf (&mnt_param_mnt,
"%s,fd=%i,rootmode=%o,user_id=%i,group_id=%i",
mnt_param, fd, S_IFDIR, getuid (), getgid ());
if (ret == -1) {
GFFUSE_LOGERR ("Out of memory");
goto out;
}
#ifdef __FreeBSD__
struct iovec *iov = NULL;
int iovlen = 0;
build_iovec (&iov, &iovlen, "fstype", "fusefs", -1);
build_iovec (&iov, &iovlen, "subtype", "glusterfs", -1);
build_iovec (&iov, &iovlen, "fspath", mountpoint, -1);
build_iovec (&iov, &iovlen, "from", "/dev/fuse", -1);
build_iovec (&iov, &iovlen, "volname", source, -1);
build_iovec_argf (&iov, &iovlen, "fd", "%d", fd);
build_iovec_argf (&iov, &iovlen, "user_id", "%d", getuid());
build_iovec_argf (&iov, &iovlen, "group_id", "%d", getgid());
ret = nmount (iov, iovlen, mountflags);
#else
ret = mount (source, mountpoint, fstype, mountflags,
mnt_param_mnt);
#endif /* __FreeBSD__ */
#ifdef GF_LINUX_HOST_OS
if (ret == -1 && errno == ENODEV) {
/* fs subtype support was added by 79c0b2df aka
v2.6.21-3159-g79c0b2d. Probably we have an
older kernel ... */
fstype = "fuse";
ret = asprintf (&source, "glusterfs#%s", fsname);
if (ret == -1) {
GFFUSE_LOGERR ("Out of memory");
goto out;
}
ret = mount (source, mountpoint, fstype, mountflags,
mnt_param_mnt);
}
#endif /* GF_LINUX_HOST_OS */
if (ret == -1)
goto out;
else
mounted = 1;
#ifdef GF_LINUX_HOST_OS
if (geteuid () == 0) {
char *newmnt = fuse_mnt_resolve_path ("fuse", mountpoint);
char *mnt_param_mtab = NULL;
if (!newmnt) {
ret = -1;
goto out;
}
ret = asprintf (&mnt_param_mtab, "%s%s",
mountflags & MS_RDONLY ? "ro," : "",
mnt_param);
if (ret == -1)
GFFUSE_LOGERR ("Out of memory");
else {
ret = fuse_mnt_add_mount ("fuse", source, newmnt,
fstype, mnt_param_mtab);
FREE (mnt_param_mtab);
}
FREE (newmnt);
if (ret == -1) {
GFFUSE_LOGERR ("failed to add mtab entry");
goto out;
}
}
#endif /* GF_LINUX_HOST_OS */
out:
if (ret == -1) {
GFFUSE_LOGERR("ret = -1\n");
if (mounted)
umount2 (mountpoint, 2); /* lazy umount */
}
FREE (mnt_param_mnt);
if (source != fsname)
FREE (source);
return ret;
}
static int fuse_mount_sys(const char *mnt, struct mount_opts *mo,
const char *mnt_opts)
{
char tmp[128];
const char *devname = "/dev/fuse";
char *source = NULL;
char *type = NULL;
struct stat stbuf;
int fd;
int res;
if (!mnt) {
fprintf(stderr, "fuse: missing mountpoint\n");
return -1;
}
res = lstat(mnt, &stbuf);
if (res == -1) {
fprintf(stderr ,"fuse: failed to access mountpoint %s: %s\n",
mnt, strerror(errno));
return -1;
}
if (!mo->nonempty) {
res = fuse_mnt_check_empty("fuse", mnt, stbuf.st_mode, stbuf.st_size);
if (res == -1)
return -1;
}
fd = open(devname, O_RDWR);
if (fd == -1) {
if (errno == ENODEV || errno == ENOENT)
fprintf(stderr,
"fuse: device not found, try 'modprobe fuse' first\n");
else
fprintf(stderr, "fuse: failed to open %s: %s\n", devname,
strerror(errno));
return -1;
}
snprintf(tmp, sizeof(tmp), "fd=%i,rootmode=%o,user_id=%i,group_id=%i", fd,
stbuf.st_mode & S_IFMT, getuid(), getgid());
res = fuse_opt_add_opt(&mo->kernel_opts, tmp);
if (res == -1)
goto out_close;
source = malloc((mo->fsname ? strlen(mo->fsname) : 0) +
(mo->subtype ? strlen(mo->subtype) : 0) +
strlen(devname) + 32);
type = malloc((mo->subtype ? strlen(mo->subtype) : 0) + 32);
if (!type || !source) {
fprintf(stderr, "fuse: failed to allocate memory\n");
goto out_close;
}
strcpy(type, mo->blkdev ? "fuseblk" : "fuse");
if (mo->subtype) {
strcat(type, ".");
strcat(type, mo->subtype);
}
strcpy(source,
mo->fsname ? mo->fsname : (mo->subtype ? mo->subtype : devname));
#ifdef __SOLARIS__
res = mount(source, mnt, MS_OPTIONSTR|mo->flags, type, NULL, 0,
mo->kernel_opts, MAX_MNTOPT_STR);
#else
res = mount(source, mnt, type, mo->flags, mo->kernel_opts);
#endif /* __SOLARIS__ */
#ifdef __SOLARIS__
if (res == -1 && errno == EINVAL && mo->subtype) {
#else
if (res == -1 && errno == ENODEV && mo->subtype) {
#endif
/* Probably missing subtype support */
strcpy(type, mo->blkdev ? "fuseblk" : "fuse");
if (mo->fsname) {
if (!mo->blkdev)
sprintf(source, "%s#%s", mo->subtype, mo->fsname);
} else {
strcpy(source, type);
}
#ifdef __SOLARIS__
res = mount(source, mnt, MS_OPTIONSTR|mo->flags, type, NULL, 0,
mo->kernel_opts, MAX_MNTOPT_STR);
#else
res = mount(source, mnt, type, mo->flags, mo->kernel_opts);
#endif /* __SOLARIS__ */
}
if (res == -1) {
/*
* Maybe kernel doesn't support unprivileged mounts, in this
* case try falling back to fusermount
*/
if (errno == EPERM) {
res = -2;
} else {
int errno_save = errno;
if (mo->blkdev && errno == ENODEV && !fuse_mnt_check_fuseblk())
fprintf(stderr, "fuse: 'fuseblk' support missing\n");
else
fprintf(stderr, "fuse: mount failed: %s\n",
strerror(errno_save));
}
goto out_close;
}
#ifndef __SOLARIS__
if (geteuid() == 0) {
char *newmnt = fuse_mnt_resolve_path("fuse", mnt);
res = -1;
if (!newmnt)
goto out_umount;
res = fuse_mnt_add_mount("fuse", source, newmnt, type, mnt_opts);
free(newmnt);
if (res == -1)
goto out_umount;
}
#endif /* __SOLARIS__ */
return fd;
out_umount:
umount2(mnt, 2); /* lazy umount */
out_close:
free(type);
free(source);
close(fd);
return res;
}
static int get_mnt_flag_opts(char **mnt_optsp, int flags)
{
int i;
if (!(flags & MS_RDONLY) && fuse_opt_add_opt(mnt_optsp, "rw") == -1)
return -1;
for (i = 0; mount_flags[i].opt != NULL; i++) {
if (mount_flags[i].on && (flags & mount_flags[i].flag) &&
fuse_opt_add_opt(mnt_optsp, mount_flags[i].opt) == -1)
return -1;
}
return 0;
}
static int add_mount(const char *source, const char *mnt, const char *type,
const char *opts)
{
return fuse_mnt_add_mount(progname, source, mnt, type, opts);
}
static int fuse_mount_sys(const char *mnt, struct mount_opts *mo,
const char *mnt_opts)
{
char tmp[128];
const char *devname = "/dev/fuse";
char *source = NULL;
char *type = NULL;
struct stat stbuf;
int fd;
int res;
if (!mnt) {
fprintf(stderr, "fuse: missing mountpoint parameter\n");
return -1;
}
res = stat(mnt, &stbuf);
if (res == -1) {
fprintf(stderr ,"fuse: failed to access mountpoint %s: %s\n",
mnt, strerror(errno));
return -1;
}
if (!mo->nonempty) {
res = fuse_mnt_check_empty("fuse", mnt, stbuf.st_mode,
stbuf.st_size);
if (res == -1)
return -1;
}
if (mo->auto_unmount) {
/* Tell the caller to fallback to fusermount because
auto-unmount does not work otherwise. */
return -2;
}
fd = open(devname, O_RDWR);
if (fd == -1) {
if (errno == ENODEV || errno == ENOENT)
fprintf(stderr, "fuse: device not found, try 'modprobe fuse' first\n");
else
fprintf(stderr, "fuse: failed to open %s: %s\n",
devname, strerror(errno));
return -1;
}
snprintf(tmp, sizeof(tmp), "fd=%i,rootmode=%o,user_id=%i,group_id=%i",
fd, stbuf.st_mode & S_IFMT, getuid(), getgid());
res = fuse_opt_add_opt(&mo->kernel_opts, tmp);
if (res == -1)
goto out_close;
source = malloc((mo->fsname ? strlen(mo->fsname) : 0) +
(mo->subtype ? strlen(mo->subtype) : 0) +
strlen(devname) + 32);
type = malloc((mo->subtype ? strlen(mo->subtype) : 0) + 32);
if (!type || !source) {
fprintf(stderr, "fuse: failed to allocate memory\n");
goto out_close;
}
strcpy(type, mo->blkdev ? "fuseblk" : "fuse");
if (mo->subtype) {
strcat(type, ".");
strcat(type, mo->subtype);
}
strcpy(source,
mo->fsname ? mo->fsname : (mo->subtype ? mo->subtype : devname));
res = mount(source, mnt, type, mo->flags, mo->kernel_opts);
if (res == -1 && errno == ENODEV && mo->subtype) {
/* Probably missing subtype support */
strcpy(type, mo->blkdev ? "fuseblk" : "fuse");
if (mo->fsname) {
if (!mo->blkdev)
sprintf(source, "%s#%s", mo->subtype,
mo->fsname);
} else {
strcpy(source, type);
}
res = mount(source, mnt, type, mo->flags, mo->kernel_opts);
}
if (res == -1) {
/*
* Maybe kernel doesn't support unprivileged mounts, in this
* case try falling back to fusermount
*/
if (errno == EPERM) {
res = -2;
} else {
int errno_save = errno;
if (mo->blkdev && errno == ENODEV &&
!fuse_mnt_check_fuseblk())
fprintf(stderr,
"fuse: 'fuseblk' support missing\n");
else
fprintf(stderr, "fuse: mount failed: %s\n",
strerror(errno_save));
}
goto out_close;
}
#ifndef __NetBSD__
#ifndef IGNORE_MTAB
if (geteuid() == 0) {
char *newmnt = fuse_mnt_resolve_path("fuse", mnt);
res = -1;
if (!newmnt)
goto out_umount;
res = fuse_mnt_add_mount("fuse", source, newmnt, type,
mnt_opts);
free(newmnt);
if (res == -1)
goto out_umount;
}
#endif /* IGNORE_MTAB */
#endif /* __NetBSD__ */
free(type);
free(source);
return fd;
out_umount:
umount2(mnt, 2); /* lazy umount */
out_close:
free(type);
free(source);
close(fd);
return res;
}
