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cpiofs支持通过ls命令查看

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This commit is contained in:
zhangzheng
2023-12-11 23:09:18 +08:00
parent 1465dc2971
commit bce83c3682
7 changed files with 161 additions and 22 deletions
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99
mkrtos_user/lib/cpio/cpiofs.c
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@@ -3,7 +3,9 @@
#include "cpiofs.h"
#include "u_util.h"
#include <string.h>
#include <sys/stat.h>
#include <assert.h>
#include <stdio.h>
int htoi(char *str, int len)
{
int n = 0;
@@ -46,12 +48,63 @@ int htoi(char *str, int len)
}
return n;
}
int cpio_find_next(umword_t st, const char *pre_name,
umword_t *size, int *type, umword_t *addr, const char **name)
{
cpio_fs_t *file_info;
uint32_t mode;
assert(addr);
assert(name);
for (umword_t i = st;;)
{
file_info = (cpio_fs_t *)i;
umword_t cpio_find_file(umword_t st, umword_t en, const char *name, umword_t *size)
if (check_magic((char *)file_info) < 0)
{
return -1;
}
int name_size = htoi(file_info->c_namesize, 8);
mode = htoi(file_info->c_mode, 8);
const char *f_name = (char *)(i + sizeof(cpio_fs_t));
if (strcmp("TRAILER!!", f_name) == 0)
{
return -1;
}
if (strncmp(f_name, pre_name, strlen(pre_name)) == 0)
{
if (S_ISDIR(mode))
{
*type = 1;
*addr = (umword_t)(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4));
}
else
{
*type = 0;
int file_size = htoi(file_info->c_filesize, 8);
*addr = ALIGN(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4) +
file_size,
4);
}
*name = f_name;
return 0;
}
else
{
return -1;
}
}
return -1;
}
int cpio_find_file(umword_t st, umword_t en, const char *name, umword_t *size, int *type, umword_t *addr)
{
uint8_t rByte;
int32_t bk_inx;
cpio_fs_t *file_info;
uint32_t mode;
assert(addr);
for (umword_t i = st; st < en;)
{
@@ -59,22 +112,50 @@ umword_t cpio_find_file(umword_t st, umword_t en, const char *name, umword_t *si
if (check_magic((char *)file_info) < 0)
{
return 0;
return -1;
}
int name_size = htoi(file_info->c_namesize, 8);
mode = htoi(file_info->c_mode, 8);
const char *f_name = (char *)(i + sizeof(cpio_fs_t));
// printf("%s\n", f_name);
if (name[0] == '\0')
{
if (type)
{
*type = 1;
}
*addr = (umword_t)(i);
return 0;
}
if (strcmp(f_name, name) == 0)
{
if (size)
if (S_ISDIR(mode))
{
*size = htoi(file_info->c_filesize, 8);
if (type)
{
*type = 1;
}
*addr = (umword_t)(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4));
return 0;
}
return (umword_t)(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4));
}
else
{
if (size)
{
*size = htoi(file_info->c_filesize, 8);
}
if (type)
{
*type = 0;
}
*addr = (umword_t)(ALIGN(i + sizeof(cpio_fs_t) + name_size, 4));
return 0;
}
}
if (strcmp("TRAILER!!", f_name) == 0)
{
return 0;
return -1;
}
int file_size = htoi(file_info->c_filesize, 8);
@@ -82,5 +163,5 @@ umword_t cpio_find_file(umword_t st, umword_t en, const char *name, umword_t *si
file_size,
4);
}
return 0;
return -1;
}