"allow_other" fuse options -- which is set by default -- do not allow to mount filesystem as ordinary user on FreeBSD

[taras-filatov]

I'ts a proposition to change the defaults.

On FreeBSD (now 15.0) I expect to be able to mount filesystems via fuse as ordinary user. For example,
fuse-ufs
and
simple-mtpfs
expose this option to user.

mkfs.exfat-fuse - not. So I obliged to run it as superuser, or get an error:

taras@bsd15:~% mount.exfat-fuse /dev/gpt/common ~/mnt_common/
FUSE exfat 1.4.0 (libfuse2)
taras@bsd15:~% mount_fusefs: /dev/fuse on /home/taras/mnt_common: Operation not permitted (extended error FUSE daemon requires privileges due to 'allow_other' option)

I propose a patch to change this behavior to expected -- remove default fuse option allow_other, but recognize it, if given in '-o' list.
In this form it works for me as port patch.

--- fuse/main.c.orig    2023-03-02 19:49:24 UTC
+++ fuse/main.c
@@ -577,6 +577,7 @@ static char* add_passthrough_fuse_options(char* fuse_o
 {
        const char* passthrough_list[] =
        {
+               "allow_other",
 #if defined(__FreeBSD__)
                "automounted",
 #endif
@@ -614,7 +615,7 @@ int main(int argc, char* argv[])
 
        printf("FUSE exfat %s (libfuse%d)\n", VERSION, FUSE_USE_VERSION / 10);
 
-       fuse_options = strdup("allow_other,"
+       fuse_options = strdup(
 #if FUSE_USE_VERSION < 30 && (defined(__linux__) || defined(__FreeBSD__))
                        "big_writes,"
 #endif

patch-fuse_main.c

====
Or maybe it better to add another option, like in ntfs-3g: no_def_opts, thus it will no break existing configs