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/* lib9p/tests/test_server/main.c - Main entry point for test 9P server
*
* Copyright (C) 2024-2025 Luke T. Shumaker <lukeshu@lukeshu.com>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <error.h>
#include <lib9p/srv.h>
#include <libcr/coroutine.h>
#include <libhw/generic/net.h>
#include <libhw/generic/alarmclock.h>
#include <libhw/host_alarmclock.h>
#include <libhw/host_net.h>
#include <libmisc/macro.h>
#include <util9p/static.h>
#include "static.h"
/* configuration **************************************************************/
#include "config.h"
#ifndef CONFIG_SRV9P_NUM_CONNS
#error config.h must define CONFIG_SRV9P_NUM_CONNS
#endif
/* globals ********************************************************************/
static implements_lib9p_srv_file *get_root(struct lib9p_srv_ctx *, struct lib9p_s);
const char *hexdig = "0123456789abcdef";
struct {
struct hostnet_tcp_listener listeners[CONFIG_SRV9P_NUM_CONNS];
struct lib9p_srv srv;
} globals = {
.srv = (struct lib9p_srv){
.rootdir = get_root,
},
};
/* api ************************************************************************/
struct api_file {
implements_lib9p_srv_file;
uint64_t pathnum;
};
static void api_free(implements_lib9p_srv_file *) {}
static uint32_t api_chio(implements_lib9p_srv_file *, struct lib9p_srv_ctx *, bool, bool, bool) { return 0; }
static void api_wstat(implements_lib9p_srv_file *, struct lib9p_srv_ctx *ctx, struct lib9p_stat) { lib9p_error(&ctx->basectx, LINUX_EROFS, "cannot wstat API file"); }
static void api_remove(implements_lib9p_srv_file *, struct lib9p_srv_ctx *ctx) { lib9p_error(&ctx->basectx, LINUX_EROFS, "cannot remove API file"); }
static struct lib9p_qid api_qid(implements_lib9p_srv_file *_self) {
struct api_file *self = VCALL_SELF(struct api_file, implements_lib9p_srv_file, _self);
assert(self);
return (struct lib9p_qid){
.type = LIB9P_QT_FILE,
.vers = 1,
.path = self->pathnum,
};
}
static struct lib9p_stat api_stat(implements_lib9p_srv_file *_self, struct lib9p_srv_ctx *) {
struct api_file *self = VCALL_SELF(struct api_file, implements_lib9p_srv_file, _self);
assert(self);
return (struct lib9p_stat){
.kern_type = 0,
.kern_dev = 0,
.file_qid = api_qid(self),
.file_mode = 0222,
.file_atime = 1728337905,
.file_mtime = 1728337904,
.file_size = 0,
.file_name = lib9p_str("shutdown"),
.file_owner_uid = lib9p_str("root"),
.file_owner_gid = lib9p_str("root"),
.file_last_modified_uid = lib9p_str("root"),
.file_extension = lib9p_str(NULL),
.file_owner_n_uid = 0,
.file_owner_n_gid = 0,
.file_last_modified_n_uid = 0,
};
}
static uint32_t api_pwrite(implements_lib9p_srv_file *, struct lib9p_srv_ctx *, void *, uint32_t byte_count, uint64_t) {
if (byte_count == 0)
return 0;
for (int i = 0; i < CONFIG_SRV9P_NUM_CONNS; i++)
VCALL(&globals.listeners[i], close);
return byte_count;
}
static struct lib9p_srv_file_vtable api_file_vtable = {
.free = api_free,
.qid = api_qid,
.chio = api_chio,
.stat = api_stat,
.wstat = api_wstat,
.remove = api_remove,
.pread = NULL,
.pwrite = api_pwrite,
};
/* file tree ******************************************************************/
enum { PATH_BASE = __COUNTER__ };
#define PATH_COUNTER __COUNTER__ - PATH_BASE
#define STATIC_FILE(STRNAME, SYMNAME) \
((struct util9p_static_file){ \
._util9p_static_common = { \
.vtable = &util9p_static_file_vtable, \
\
.u_name = "root", .u_num = 0, /* owner user */ \
.g_name = "root", .g_num = 0, /* owner group */ \
.m_name = "root", .m_num = 0, /* last-modified-by user */ \
\
.pathnum = PATH_COUNTER, \
.name = STRNAME, \
.perm = 0444, \
.atime = 1728337905, \
.mtime = 1728337904, \
}, \
.data_start = _binary_static_##SYMNAME##_start, \
.data_end = _binary_static_##SYMNAME##_end, \
})
#define STATIC_DIR(STRNAME, ...) \
((struct util9p_static_dir){ \
._util9p_static_common = { \
.vtable = &util9p_static_dir_vtable, \
\
.u_name = "root", .u_num = 0, /* owner user */ \
.g_name = "root", .g_num = 0, /* owner group */ \
.m_name = "root", .m_num = 0, /* last-modified-by user */ \
\
.pathnum = PATH_COUNTER, \
.name = STRNAME, \
.perm = 0555, \
.atime = 1728337905, \
.mtime = 1728337904, \
}, \
.members = { __VA_ARGS__ __VA_OPT__(,) NULL }, \
})
/* NB: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118814 */
static struct util9p_static_dir root =
STATIC_DIR("",
&STATIC_DIR("Documentation",
&STATIC_FILE("x", Documentation_x)),
&STATIC_FILE("README.md", README_md),
&((struct api_file){.vtable = &api_file_vtable, .pathnum = PATH_COUNTER}));
static implements_lib9p_srv_file *get_root(struct lib9p_srv_ctx *LM_UNUSED(ctx), struct lib9p_s LM_UNUSED(treename)) {
return &root;
}
/* main ***********************************************************************/
static COROUTINE read_cr(void *_i) {
int i = *((int *)_i);
cr_begin();
hostnet_tcp_listener_init(&globals.listeners[i], 9000);
lib9p_srv_read_cr(&globals.srv, &globals.listeners[i]);
cr_end();
}
static COROUTINE init_cr(void *) {
cr_begin();
sleep_for_ms(1);
for (int i = 0; i < CONFIG_SRV9P_NUM_CONNS; i++) {
char name[] = {'r', 'e', 'a', 'd', '-', hexdig[i], '\0'};
if (!coroutine_add(name, read_cr, &i))
error(1, 0, "coroutine_add(read_cr, &i)");
}
for (int i = 0; i < 2*CONFIG_SRV9P_NUM_CONNS; i++) {
char name[] = {'w', 'r', 'i', 't', 'e', '-', hexdig[i], '\0'};
if (!coroutine_add(name, lib9p_srv_write_cr, &globals.srv))
error(1, 0, "coroutine_add(lib9p_srv_write_cr, &globals.srv)");
}
cr_exit();
}
int main() {
struct hostclock clock_monotonic = {
.vtable = &hostclock_vtable,
.clock_id = CLOCK_MONOTONIC,
};
bootclock = &clock_monotonic;
coroutine_add("init", init_cr, NULL);
coroutine_main();
return 0;
}
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