Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 1 | #include <stdint.h> |
| 2 | |
| 3 | #include "talloc.h" |
| 4 | #include "trace.h" |
Harald Welte | ba2ad56 | 2017-11-28 19:49:41 +0100 | [diff] [blame] | 5 | #include "utils.h" |
Harald Welte | 9d90d28 | 2018-06-29 22:25:42 +0200 | [diff] [blame] | 6 | #include <osmocom/core/utils.h> |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 7 | |
| 8 | #define NUM_RCTX_SMALL 10 |
| 9 | #define RCTX_SIZE_SMALL 348 |
| 10 | |
| 11 | static uint8_t msgb_data[NUM_RCTX_SMALL][RCTX_SIZE_SMALL] __attribute__((aligned(sizeof(long)))); |
| 12 | static uint8_t msgb_inuse[NUM_RCTX_SMALL]; |
| 13 | |
| 14 | void *_talloc_zero(const void *ctx, size_t size, const char *name) |
| 15 | { |
| 16 | unsigned int i; |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 17 | unsigned long x; |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 18 | |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 19 | local_irq_save(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 20 | if (size > RCTX_SIZE_SMALL) { |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 21 | local_irq_restore(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 22 | TRACE_ERROR("%s() request too large(%d > %d)\r\n", __func__, size, RCTX_SIZE_SMALL); |
| 23 | return NULL; |
| 24 | } |
| 25 | |
| 26 | for (i = 0; i < ARRAY_SIZE(msgb_inuse); i++) { |
| 27 | if (!msgb_inuse[i]) { |
| 28 | uint8_t *out = msgb_data[i]; |
| 29 | msgb_inuse[i] = 1; |
| 30 | memset(out, 0, size); |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 31 | local_irq_restore(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 32 | return out; |
| 33 | } |
| 34 | } |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 35 | local_irq_restore(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 36 | TRACE_ERROR("%s() out of memory!\r\n", __func__); |
| 37 | return NULL; |
| 38 | } |
| 39 | |
| 40 | int _talloc_free(void *ptr, const char *location) |
| 41 | { |
| 42 | unsigned int i; |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 43 | unsigned long x; |
| 44 | |
| 45 | local_irq_save(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 46 | for (i = 0; i < ARRAY_SIZE(msgb_inuse); i++) { |
| 47 | if (ptr == msgb_data[i]) { |
| 48 | if (!msgb_inuse[i]) { |
| 49 | TRACE_ERROR("%s: double_free by \r\n", __func__, location); |
| 50 | } else { |
| 51 | msgb_inuse[i] = 0; |
| 52 | } |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 53 | local_irq_restore(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 54 | return 0; |
| 55 | } |
| 56 | } |
| 57 | |
Harald Welte | 7b36306 | 2017-11-04 00:06:03 +0100 | [diff] [blame] | 58 | local_irq_restore(x); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 59 | TRACE_ERROR("%s: invalid pointer %p from %s\r\n", __func__, ptr, location); |
| 60 | return -1; |
| 61 | } |
| 62 | |
| 63 | void talloc_set_name_const(const void *ptr, const char *name) |
| 64 | { |
| 65 | /* do nothing */ |
| 66 | } |
| 67 | |
| 68 | #if 0 |
| 69 | void *talloc_named_const(const void *context, size_t size, const char *name) |
| 70 | { |
| 71 | if (size) |
| 72 | TRACE_ERROR("%s: called with size!=0 from %s\r\n", __func__, name); |
| 73 | return NULL; |
| 74 | } |
| 75 | |
| 76 | void *talloc_pool(const void *context, size_t size) |
| 77 | { |
| 78 | } |
| 79 | #endif |
| 80 | |