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boot cpio fs映射到用户态

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This commit is contained in:
zhangzheng
2024-04-07 15:04:30 +00:00
parent a001a26bfe
commit b30ec9575d
17 changed files with 388 additions and 16 deletions
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39
mkrtos_knl/lib/cpio.c
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@@ -1,9 +1,42 @@
#include "mk_sys.h"
#include "cpio.h"
#include <util.h>
#include <string.h>
#define MIN(a, b) ((a) < (b) ? (a) : (b)) //!< 最小值
#define ALIGN(mem, align) (((mem) + ((align) - 1)) & (~((align) - 1))) //!< 向上对齐
#include <arch.h>
// #define MIN(a, b) ((a) < (b) ? (a) : (b)) //!< 最小值
// #define ALIGN(mem, align) (((mem) + ((align) - 1)) & (~((align) - 1))) //!< 向上对齐
static int htoi(char *str, int len);
umword_t cpio_get_size(umword_t st)
{
cpio_fs_t *file_info;
umword_t i;
for (i = st; st < (umword_t)(-1);)
{
file_info = (cpio_fs_t *)i;
if (check_magic((char *)file_info) < 0)
{
return 0;
}
int name_size = htoi(file_info->c_namesize, 8);
const char *f_name = (char *)(i + sizeof(cpio_fs_t));
if (strcmp("TRAILER!!!", f_name) == 0)
{
break;
}
int file_size = htoi(file_info->c_filesize, 8);
i = ALIGN(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4) +
file_size,
4);
}
return ALIGN(i, PAGE_SIZE) - st;
}
umword_t cpio_find_file(umword_t st, umword_t en, const char *name, size_t *size)
{
uint8_t rByte;
@@ -42,7 +75,7 @@ umword_t cpio_find_file(umword_t st, umword_t en, const char *name, size_t *size
return 0;
}
int htoi(char *str, int len)
static int htoi(char *str, int len)
{
int n = 0;
int i = 0;