1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* lib9p_util/coroutine.c - 9P access to libcr process information
*
* Copyright (C) 2025 Luke T. Shumaker <lukeshu@lukeshu.com>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <libcr/coroutine.h>
#include <libheap/inspect.h>
#include <libmisc/fmt.h>
#include <libmisc/heap.h>
#include <util9p/static.h>
#include <util9p/coroutine.h>
/******************************************************************************/
LO_IMPLEMENTATION_C(lib9p_srv_file, struct coroutine_file, coroutine_file);
static_assert(CONFIG_COROUTINE_NUM < 1000);
#define MAX(a, b) ( ((a)>(b)) ? (a) : (b) )
static_assert(sizeof(size_t) == 4 || sizeof(size_t) == 8);
#define SIZE_MAX_BASE10_LEN (sizeof(size_t) == 4 ? 10 : 20)
struct coroutine_fio {
struct coroutine_file *parent;
size_t buf_len;
char buf[
(3 +2 /* cid */
+MAX(CONFIG_COROUTINE_NAME_LEN, 6) +2 /* name */
+14 +2 /* state; len("CR_INITIALIZING")=14 */
+MAX(SIZE_MAX_BASE10_LEN, 9) +2 /* stack_cap */
+MAX(SIZE_MAX_BASE10_LEN, 9) +2 /* stack_max */
+MAX(SIZE_MAX_BASE10_LEN, 9) +2 /* stack_cur */
+MAX(SIZE_MAX_BASE10_LEN, 14) +2 /* heap_bytes_cur */
+MAX(SIZE_MAX_BASE10_LEN, 13) +1 /* heap_segs_cur */
)*(CONFIG_COROUTINE_NUM+4)];
};
LO_IMPLEMENTATION_STATIC(lib9p_srv_fio, struct coroutine_fio, coroutine_fio);
/* srv_file *******************************************************************/
void coroutine_file_free(struct coroutine_file *self) {
assert(self);
}
struct lib9p_qid coroutine_file_qid(struct coroutine_file *self) {
assert(self);
return (struct lib9p_qid){
.type = LIB9P_QT_FILE,
.vers = 1,
.path = self->pathnum,
};
}
error coroutine_file_stat(struct coroutine_file *self, struct lib9p_srv_ctx *ctx, struct lib9p_srv_stat *out) {
assert(self);
assert(ctx);
assert(out);
*out = ((struct lib9p_srv_stat){
.qid = coroutine_file_qid(self),
.mode = 0444,
.atime_sec = UTIL9P_ATIME,
.mtime_sec = UTIL9P_MTIME,
.size = 0,
.name = lib9p_str(self->name),
.owner_uid = { .name = lib9p_str("root"), .num = 0 },
.owner_gid = { .name = lib9p_str("root"), .num = 0 },
.last_modifier_uid = { .name = lib9p_str("root"), .num = 0 },
.extension = lib9p_str(NULL),
});
return ERROR_NULL;
}
error coroutine_file_wstat(struct coroutine_file *self, struct lib9p_srv_ctx *ctx, struct lib9p_srv_stat) {
assert(self);
assert(ctx);
return error_new(E_POSIX_EROFS, "read-only part of filesystem");
}
error coroutine_file_remove(struct coroutine_file *self, struct lib9p_srv_ctx *ctx) {
assert(self);
assert(ctx);
return error_new(E_POSIX_EROFS, "read-only part of filesystem");
}
LIB9P_SRV_NOTDIR(, struct coroutine_file, coroutine_file);
lib9p_srv_fio_or_error coroutine_file_fopen(struct coroutine_file *self, struct lib9p_srv_ctx *ctx,
bool LM_UNUSED(rd), bool LM_UNUSED(wr), bool LM_UNUSED(trunc)) {
assert(self);
assert(ctx);
struct coroutine_fio *ret = heap_alloc(1, struct coroutine_fio);
ret->parent = self;
return ERROR_NEW_VAL(lib9p_srv_fio, LO_BOX(lib9p_srv_fio, ret));
}
/* srv_fio ********************************************************************/
static uint32_t coroutine_fio_iounit(struct coroutine_fio *self) {
assert(self);
return sizeof(self->buf);
}
static void coroutine_fio_iofree(struct coroutine_fio *self) {
assert(self);
heap_free(self);
}
static struct lib9p_qid coroutine_fio_ioqid(struct coroutine_fio *self) {
assert(self);
assert(self->parent);
return coroutine_file_qid(self->parent);
}
static error coroutine_fio_pread(struct coroutine_fio *self, struct lib9p_srv_ctx *ctx,
lo_interface io_writer dst, uint64_t byte_offset, uint32_t byte_count) {
assert(self);
assert(ctx);
if (byte_offset == 0 || self->buf_len == 0) {
struct fmt_buf _w = { .dat = self->buf, .cap = sizeof(self->buf) };
lo_interface fmt_dest w = lo_box_fmt_buf_as_fmt_dest(&_w);
struct heap_info heap_info;
heap_usage(&heap_info);
size_t w_cid = 3;
size_t w_name = MAX(CONFIG_COROUTINE_NAME_LEN, strlen("KERNEL"));
size_t w_state = strlen("CR_INITIALZING");
size_t w_stack_cap = MAX(SIZE_MAX_BASE10_LEN, strlen("stack_cap"));
size_t w_stack_max = MAX(SIZE_MAX_BASE10_LEN, strlen("stack_max"));
size_t w_stack_cur = MAX(SIZE_MAX_BASE10_LEN, strlen("stack_cur"));
size_t w_heap_bytes_cur = MAX(SIZE_MAX_BASE10_LEN, strlen("heap_bytes_cur"));
size_t w_heap_segs_cur = MAX(SIZE_MAX_BASE10_LEN, strlen("heap_segs_cur"));
fmt_print(w,
(ljust, w_cid, ' ', "cid"), " ",
(ljust, w_name, ' ', "name"), " ",
(ljust, w_state, ' ', "state"), " ",
(rjust, w_stack_cap, ' ', "stack_cap"), " ",
(rjust, w_stack_max, ' ', "stack_max"), " ",
(rjust, w_stack_cur, ' ', "stack_cur"), " ",
(rjust, w_heap_bytes_cur, ' ', "heap_bytes_cur"), " ",
(rjust, w_heap_segs_cur, ' ', "heap_segs_cur"), "\n");
fmt_print(w,
(ljust, w_cid, ' ', "-"), " ",
(ljust, w_name, ' ', "KERNEL"), " ",
(ljust, w_state, ' ', "-"), " ",
(rjust, w_stack_cap, ' ', "?"), " ",
(rjust, w_stack_max, ' ', "?"), " ",
(rjust, w_stack_cur, ' ', "?"), " ",
(rjust, w_heap_bytes_cur, ' ', heap_info.allocated[HEAP_CID_KERNEL].sum), " ",
(rjust, w_heap_segs_cur, ' ', heap_info.allocated[HEAP_CID_KERNEL].nseg), "\n");
for (cid_t cid = 1; cid <= CONFIG_COROUTINE_NUM; cid++) {
struct cr_cid_info info;
cr_cid_info(cid, &info);
if (info.state == CR_NONE)
continue;
fmt_print(w,
(ljust, w_cid, ' ', cid), " ",
(ljust, w_name, ' ', (strn, info.name, sizeof(info.name))), " ",
(ljust, w_state, ' ', coroutine_state_str(info.state)), " ",
(rjust, w_stack_cap, ' ', info.stack_cap), " ",
(rjust, w_stack_max, ' ', info.stack_max), " ",
(rjust, w_stack_cur, ' ', info.stack_cur), " ",
(rjust, w_heap_bytes_cur, ' ', heap_info.allocated[cid].sum), " ",
(rjust, w_heap_segs_cur, ' ', heap_info.allocated[cid].nseg), "\n");
}
fmt_print(w,
(ljust, w_cid, ' ', "-"), " ",
(ljust, w_name, ' ', "HEAP"), " ",
(ljust, w_state, ' ', "-"), " ",
(rjust, w_stack_cap, ' ', "-"), " ",
(rjust, w_stack_max, ' ', "-"), " ",
(rjust, w_stack_cur, ' ', "-"), " ",
(rjust, w_heap_bytes_cur, ' ', heap_info.internal_use), " ",
(rjust, w_heap_segs_cur, ' ', "-"), "\n");
fmt_print(w,
(ljust, w_cid, ' ', "-"), " ",
(ljust, w_name, ' ', "FREE"), " ",
(ljust, w_state, ' ', "-"), " ",
(rjust, w_stack_cap, ' ', "-"), " ",
(rjust, w_stack_max, ' ', "-"), " ",
(rjust, w_stack_cur, ' ', "-"), " ",
(rjust, w_heap_bytes_cur, ' ', heap_info.allocated[HEAP_CID_UNALLOCATED].sum), " ",
(rjust, w_heap_segs_cur, ' ', heap_info.allocated[HEAP_CID_UNALLOCATED].nseg), "\n");
assert(_w.len <= _w.cap);
self->buf_len = _w.len;
}
if (byte_offset > (uint64_t)self->buf_len)
return error_new(E_POSIX_EINVAL, "offset is past end-of-file length");
size_t beg_off = (size_t)byte_offset;
size_t end_off = beg_off + (size_t)byte_count;
if (end_off > self->buf_len)
end_off = self->buf_len;
return io_write(dst, &((char *)(self->buf))[beg_off], end_off-beg_off).err;
}
static uint32_t_or_error coroutine_fio_pwrite(struct coroutine_fio *self, struct lib9p_srv_ctx *ctx,
const void *LM_UNUSED(buf),
uint32_t LM_UNUSED(byte_count),
uint64_t LM_UNUSED(byte_offset)) {
assert(self);
assert(ctx);
return ERROR_NEW_ERR(uint32_t, error_new(E_POSIX_EROFS, "read-only part of filesystem"));
}
|
