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#include <stdio.h>
#include <getopt.h>
#include <error.h>
#include <sys/stat.h>
#include <hurd.h>
#include <hurd/trivfs.h>
/* Where to put the service ports. */
static struct port_bucket *port_bucket;
/* Trivfs hooks. */
int trivfs_fstype = FSTYPE_MISC;
int trivfs_fsid = 0;
int trivfs_support_read = 1;
int trivfs_support_write = 1;
int trivfs_support_exec = 1;
int trivfs_allow_open = O_READ|O_WRITE|O_EXEC;
struct port_class *trivfs_protid_portclasses[1];
struct port_class *trivfs_cntl_portclasses[1];
int trivfs_protid_nportclasses = 1;
int trivfs_cntl_nportclasses = 1;
static int
exec_demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp)
{
extern int exec_server (mach_msg_header_t *inp, mach_msg_header_t *outp);
return exec_server (inp, outp) || trivfs_demuxer (inp, outp);
}
void
trivfs_modify_stat (struct trivfs_protid *cred, struct stat *st)
{
st->st_fstype = FSTYPE_MISC;
}
error_t
trivfs_goaway (struct trivfs_control *fsys, int flags)
{
int count;
/* Stop new requests. */
ports_inhibit_class_rpcs (trivfs_cntl_portclasses[0]);
ports_inhibit_class_rpcs (trivfs_protid_portclasses[0]);
/* Are there any extant user ports for the /servers/exec file? */
count = ports_count_class (trivfs_protid_portclasses[0]);
if (count == 0 || (flags & FSYS_GOAWAY_FORCE))
{
/* No users. Disconnect from the filesystem. */
mach_port_deallocate (mach_task_self (), fsys->underlying);
/* Are there remaining exec_startup RPCs to answer? */
count = ports_count_class (execboot_portclass);
if (count == 0)
/* Nope. We got no reason to live. */
exit (0);
/* Continue servicing tasks starting up. */
ports_enable_class (execboot_portclass);
/* No more communication with the parent filesystem. */
ports_destroy_right (fsys);
going_down = 1;
return 0;
}
else
{
/* We won't go away, so start things going again... */
ports_enable_class (trivfs_protid_portclasses[0]);
ports_resume_class_rpcs (trivfs_cntl_portclasses[0]);
ports_resume_class_rpcs (trivfs_protid_portclasses[0]);
return EBUSY;
}
}
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