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#include <assert.h>
#include "static.h"
#define UNUSED(name) /* name __attribute__((unused)) */
#define p9_str(cstr) ((struct lib9p_s){ .len = strlen(cstr), .utf8 = cstr })
#define p9_nulstr ((struct lib9p_s){ .len = 0, .utf8 = NULL })
/******************************************************************************/
static struct lib9p_srv_file *static_dir_clone(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_file) {
assert(ctx);
struct static_dir *file = (struct static_dir *)_file;
assert(file);
return &file->header;
}
static void static_dir_free(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_file) {
assert(ctx);
struct static_dir *file = (struct static_dir *)_file;
assert(file);
/* do nothing */
}
static uint32_t static_dir_io(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_file, lib9p_o_t UNUSED(flags)) {
assert(ctx);
struct static_dir *file = (struct static_dir *)_file;
assert(file);
return 1;
}
static struct lib9p_stat static_dir_stat(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_file) {
assert(ctx);
struct static_dir *file = (struct static_dir *)_file;
assert(file);
return (struct lib9p_stat){
.kern_type = 0,
.kern_dev = 0,
.file_qid = {
.type = LIB9P_QT_DIR,
.vers = 1,
.path = file->pathnum,
},
.file_mode = LIB9P_DM_DIR | (file->perm & 0555),
.file_atime = file->atime,
.file_mtime = file->mtime,
.file_size = 0,
.file_name = p9_str(file->name),
.file_owner_uid = p9_str(file->u_name),
.file_owner_gid = p9_str(file->g_name),
.file_last_modified_uid = p9_str(file->m_name),
.file_extension = p9_nulstr,
.file_owner_n_uid = file->u_num,
.file_owner_n_gid = file->g_num,
.file_last_modified_n_uid = file->m_num,
};
}
static void static_dir_wstat(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_file,
struct lib9p_stat UNUSED(new)) {
assert(ctx);
struct static_dir *file = (struct static_dir *)_file;
assert(file);
lib9p_error(&ctx->basectx, LINUX_EROFS, "read-only part of filesystem");
}
static void static_dir_remove(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_file) {
assert(ctx);
struct static_dir *file = (struct static_dir *)_file;
assert(file);
lib9p_error(&ctx->basectx, LINUX_EROFS, "read-only part of filesystem");
}
static struct lib9p_srv_file *static_dir_dopen(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_dir,
char *UNUSED(childname)) {
assert(ctx);
struct static_dir *dir = (struct static_dir *)_dir;
assert(dir);
lib9p_error(&ctx->basectx, LINUX_EFAULT, "TODO: dopen");
return NULL;
}
static struct lib9p_srv_file *static_dir_dcreate(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_dir,
char *UNUSED(childname),
lib9p_dm_t UNUSED(perm), lib9p_o_t UNUSED(flags)) {
assert(ctx);
struct static_dir *dir = (struct static_dir *)_dir;
assert(dir);
lib9p_error(&ctx->basectx, LINUX_EROFS, "read-only part of filesystem");
return NULL;
}
static size_t static_dir_dread(struct lib9p_srv_ctx *ctx, struct lib9p_srv_file *_dir,
uint8_t *buf,
uint32_t byte_count,
size_t _obj_offset) {
assert(ctx);
struct static_dir *dir = (struct static_dir *)_dir;
assert(dir);
uint32_t byte_offset = 0;
size_t obj_offset = _obj_offset;
while (dir->members[obj_offset]) {
struct lib9p_srv_file *filep = dir->members[obj_offset];
struct lib9p_stat stat = filep->vtable->stat(ctx, filep);
if (lib9p_ctx_has_error(&ctx->basectx))
break;
uint32_t nbytes = lib9p_marshal_stat(&ctx->basectx, byte_count-byte_offset, &stat,
&buf[byte_offset]);
if (!nbytes) {
if (obj_offset == _obj_offset)
lib9p_error(&ctx->basectx,
LINUX_ERANGE, "stat object does not fit into negotiated max message size");
break;
}
byte_offset += nbytes;
obj_offset++;
}
return obj_offset - _obj_offset;
}
struct lib9p_srv_file_vtable static_dir_vtable = {
.clone = static_dir_clone,
.free = static_dir_free,
.io = static_dir_io,
.stat = static_dir_stat,
.wstat = static_dir_wstat,
.remove = static_dir_remove,
.dopen = static_dir_dopen,
.dcreate = static_dir_dcreate,
.dread = static_dir_dread,
};
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