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Code Issues Releases Activity

pkg2: ini patches: reduce heap fragmentation/pressure

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This commit is contained in:
CTCaer 2022-01-20 13:31:16 +02:00
parent 781f377083
commit 3b2f438f69
2 changed files with 87 additions and 73 deletions
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57
bootloader/hos/pkg2.c
View file

@ -1,6 +1,6 @@
/*
* Copyright (c) 2018 naehrwert
* Copyright (c) 2018-2021 CTCaer
* Copyright (c) 2018-2022 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -72,17 +72,13 @@ void pkg2_get_ids(kip1_id_t **ids, u32 *entries)
static void parse_external_kip_patches()
{
static bool ext_patches_done = false;
static bool ext_patches_parsed = false;
if (ext_patches_done)
if (ext_patches_parsed)
return;
u32 curr_kip_idx = 0;
char path[64];
strcpy(path, "bootloader/patches.ini");
LIST_INIT(ini_kip_sections);
if (ini_patch_parse(&ini_kip_sections, path))
if (ini_patch_parse(&ini_kip_sections, "bootloader/patches.ini"))
{
// Copy ids into a new patchset.
_kip_id_sets = calloc(sizeof(kip1_id_t), 256); // Max 256 kip ids.
@ -93,13 +89,15 @@ static void parse_external_kip_patches()
{
kip1_id_t* curr_kip = NULL;
bool found = false;
for (curr_kip_idx = 0; curr_kip_idx < _kip_id_sets_cnt + 1; curr_kip_idx++)
for (u32 curr_kip_idx = 0; curr_kip_idx < _kip_id_sets_cnt + 1; curr_kip_idx++)
{
curr_kip = &_kip_id_sets[curr_kip_idx];
// Check if reached the end of predefined list.
if (!curr_kip->name)
break;
// Check if name and hash match.
if (!strcmp(curr_kip->name, ini_psec->name) && !memcmp(curr_kip->hash, ini_psec->hash, 8))
{
found = true;
@ -140,34 +138,27 @@ static void parse_external_kip_patches()
if (first_ext_patch)
{
first_ext_patch = false;
patchsets[curr_patchset_idx].name = malloc(strlen(pt->name) + 1);
strcpy(patchsets[curr_patchset_idx].name, pt->name);
patchsets[curr_patchset_idx].name = pt->name;
patchsets[curr_patchset_idx].patches = patches;
}
else
{
// Check if new patchset name is found and create a new set.
if (strcmp(pt->name, patchsets[curr_patchset_idx].name))
else if (strcmp(pt->name, patchsets[curr_patchset_idx].name))
{
// New patchset name found, create a new set.
curr_patchset_idx++;
curr_patch_idx = 0;
patches = calloc(sizeof(kip1_patch_t), 16); // Max 16 patches per set.
patches = calloc(sizeof(kip1_patch_t), 32); // Max 32 patches per set.
patchsets[curr_patchset_idx].name = malloc(strlen(pt->name) + 1);
strcpy(patchsets[curr_patchset_idx].name, pt->name);
patchsets[curr_patchset_idx].name = pt->name;
patchsets[curr_patchset_idx].patches = patches;
}
}
if (pt->length)
{
patches[curr_patch_idx].offset = pt->offset;
patches[curr_patch_idx].length = pt->length;
patches[curr_patch_idx].srcData = malloc(pt->length);
patches[curr_patch_idx].dstData = malloc(pt->length);
memcpy(patches[curr_patch_idx].srcData, pt->srcData, pt->length);
memcpy(patches[curr_patch_idx].dstData, pt->dstData, pt->length);
patches[curr_patch_idx].srcData = (char *)pt->srcData;
patches[curr_patch_idx].dstData = (char *)pt->dstData;
}
else
patches[curr_patch_idx].srcData = malloc(1); // Empty patches check. Keep everything else as 0.
@ -180,7 +171,7 @@ static void parse_external_kip_patches()
}
}
ext_patches_done = true;
ext_patches_parsed = true;
}
const pkg2_kernel_id_t *pkg2_identify(u8 *hash)
@ -436,19 +427,11 @@ static int _kipm_inject(const char *kipm_path, char *target_name, pkg2_kip1_info
return 1;
}
static bool ext_patches_parsed = false;
const char* pkg2_patch_kips(link_t *info, char* patchNames)
{
if (patchNames == NULL || patchNames[0] == 0)
return NULL;
if (!ext_patches_parsed)
{
parse_external_kip_patches();
ext_patches_parsed = true;
}
static const u32 MAX_NUM_PATCHES_REQUESTED = sizeof(u32) * 8;
char* patches[MAX_NUM_PATCHES_REQUESTED];
@ -498,6 +481,16 @@ const char* pkg2_patch_kips(link_t *info, char* patchNames)
DPRINTF("Requested patch: '%s'\n", patches[i]);
}
// Parse external patches if needed.
for (u32 i = 0; i < numPatches; i++)
{
if (strcmp(patches[i], "emummc") && strcmp(patches[i], "nogc"))
{
parse_external_kip_patches();
break;
}
}
u32 shaBuf[32 / sizeof(u32)];
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, info, link)
{

95
bootloader/hos/pkg2_ini_kippatch.c
View file

@ -1,3 +1,19 @@
/*
* Copyright (c) 2019-2022 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <stdlib.h>
@ -8,12 +24,12 @@
#define KPS(x) ((u32)(x) << 29)
static u8 *_htoa(u8 *result, const char *ptr, u8 byte_len)
static u8 *_htoa(u8 *result, const char *ptr, u8 byte_len, u8 *buf)
{
char ch = *ptr;
u32 ascii_len = byte_len * 2;
if (!result)
result = malloc(byte_len);
result = buf;
u8 *dst = result;
while (ch == ' ' || ch == '\t')
@ -46,24 +62,11 @@ static u8 *_htoa(u8 *result, const char *ptr, u8 byte_len)
return result;
}
static char *_strdup(char *str)
{
if (!str)
return NULL;
if (str[0] == ' ' && (strlen(str) > 1))
str++;
char *res = (char *)malloc(strlen(str) + 1);
strcpy(res, str);
if (res[strlen(res) - 1] == ' ' && (strlen(res) > 1))
res[strlen(res) - 1] = 0;
return res;
}
static u32 _find_patch_section_name(char *lbuf, u32 lblen, char schar)
{
u32 i;
for (i = 0; i < lblen && lbuf[i] != schar && lbuf[i] != '\n' && lbuf[i] != '\r'; i++)
// Depends on 'FF_USE_STRFUNC 2' that removes \r.
for (i = 0; i < lblen && lbuf[i] != schar && lbuf[i] != '\n'; i++)
;
lbuf[i] = 0;
@ -75,12 +78,16 @@ static ini_kip_sec_t *_ini_create_kip_section(link_t *dst, ini_kip_sec_t *ksec,
if (ksec)
list_append(dst, &ksec->link);
ksec = (ini_kip_sec_t *)calloc(sizeof(ini_kip_sec_t), 1);
u32 i = _find_patch_section_name(name, strlen(name), ':') + 1;
ksec->name = _strdup(name);
// Calculate total allocation size.
u32 len = strlen(name);
char *buf = calloc(sizeof(ini_kip_sec_t) + len + 1, 1);
ksec = (ini_kip_sec_t *)buf;
u32 i = _find_patch_section_name(name, len, ':') + 1;
ksec->name = strcpy_ns(buf + sizeof(ini_kip_sec_t), name);
// Get hash section.
_htoa(ksec->hash, &name[i], 8);
_htoa(ksec->hash, &name[i], 8, NULL);
return ksec;
}
@ -89,13 +96,15 @@ int ini_patch_parse(link_t *dst, char *ini_path)
{
FIL fp;
u32 lblen;
char lbuf[512];
char *lbuf;
ini_kip_sec_t *ksec = NULL;
// Open ini.
if (f_open(&fp, ini_path, FA_READ) != FR_OK)
return 0;
lbuf = malloc(512);
do
{
// Fetch one line.
@ -111,37 +120,47 @@ int ini_patch_parse(link_t *dst, char *ini_path)
{
_find_patch_section_name(lbuf, lblen, ']');
// Set patchset kip name and hash.
ksec = _ini_create_kip_section(dst, ksec, &lbuf[1]);
list_init(&ksec->pts);
}
else if (ksec && lbuf[0] == '.') // Extract key/value.
{
u32 tmp = 0;
u32 i = _find_patch_section_name(lbuf, lblen, '=');
u32 str_start = 0;
u32 pos = _find_patch_section_name(lbuf, lblen, '=');
ini_patchset_t *pt = (ini_patchset_t *)calloc(sizeof(ini_patchset_t), 1);
// Calculate total allocation size.
char *buf = calloc(sizeof(ini_patchset_t) + strlen(&lbuf[1]) + 1, 1);
ini_patchset_t *pt = (ini_patchset_t *)buf;
pt->name = _strdup(&lbuf[1]);
// Set patch name.
pt->name = strcpy_ns(buf + sizeof(ini_patchset_t), &lbuf[1]);
u8 kip_sidx = lbuf[i + 1] - '0';
u8 kip_sidx = lbuf[pos + 1] - '0';
pos += 3;
if (kip_sidx < 6)
{
// Set patch offset.
pt->offset = KPS(kip_sidx);
tmp = _find_patch_section_name(&lbuf[i + 3], lblen, ':');
pt->offset |= strtol(&lbuf[i + 3], NULL, 16);
str_start = _find_patch_section_name(&lbuf[pos], lblen - pos, ':');
pt->offset |= strtol(&lbuf[pos], NULL, 16);
pos += str_start + 1;
i += tmp + 4;
// Set patch size.
str_start = _find_patch_section_name(&lbuf[pos], lblen - pos, ':');
pt->length = strtol(&lbuf[pos], NULL, 16);
pos += str_start + 1;
tmp = _find_patch_section_name(&lbuf[i], lblen, ':');
pt->length = strtol(&lbuf[i], NULL, 16);
u8 *buf = malloc(pt->length * 2);
i += tmp + 1;
// Set patch source data.
str_start = _find_patch_section_name(&lbuf[pos], lblen - pos, ',');
pt->srcData = _htoa(NULL, &lbuf[pos], pt->length, buf);
pos += str_start + 1;
tmp = _find_patch_section_name(&lbuf[i], lblen, ',');
pt->srcData = _htoa(NULL, &lbuf[i], pt->length);
i += tmp + 1;
pt->dstData = _htoa(NULL, &lbuf[i], pt->length);
// Set patch destination data.
pt->dstData = _htoa(NULL, &lbuf[pos], pt->length, buf + pt->length);
}
list_append(&ksec->pts, &pt->link);
@ -153,5 +172,7 @@ int ini_patch_parse(link_t *dst, char *ini_path)
if (ksec)
list_append(dst, &ksec->link);
free(lbuf);
return 1;
}