libs/rt-thread
libs/rt-thread
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
rt-thread/components/lwp/lwp_elf.c
Shell e5cf86267b
[smart] fixup of script execution (#9009) 
This patch fixup the script execution capabilities on argv passing
and adds support for arguments larger than 4k.

According to POSIX, the script parameter is quiet different
from the current implementation. Especially on the way it inserts
the path of executables. At the end, when you execute a script
from `$PATH`, it always fails.

For the script, interpreter will be invoked with the following
arguments: `{interpreter [optional-arg] pathname arg...}`
where pathname is the pathname of the file specified as the first
argument of execve(), and arg...  is the series of words pointed
to by the argv argument of execve(), starting at argv[1].  Note that
there is no way to get the argv[0] that was passed to the
execve() call.

The changes include:

- Separating argument, environment variable, and auxiliary vector
  processing into a new lwp_args.c file.
- Fixing bugs in script argument processing and supporting arguments
  larger than 4k.
- Updating lwp_execve to use the new argscopy function and removing
  the old lwp_argscopy function.
- Making various modifications to lwp_load and elf_aux_fill to work
  with the new argument processing.
- Removing unnecessary code related to dynamic loading and interpreter
  scripts.

Signed-off-by: Shell <smokewood@qq.com>
2024-05-31 17:32:19 +08:00

812 lines
20 KiB
C
Raw Blame History

/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-08-23 zhangsz first version
*/
#include <rtthread.h>
#ifdef RT_USING_LDSO
#include <dfs_file.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <lwp_elf.h>
#include "lwp.h"
#include "lwp_arch.h"
#ifdef ARCH_MM_MMU
#include <lwp_user_mm.h>
#endif
#define DBG_TAG "load.elf"
#ifdef ELF_DEBUG_ENABLE
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO
#endif
#include <rtdbg.h>
#define ELF_INVALID_FD -1
#define ELF_PHDR_NUM_MAX 128
#define FILE_LENGTH_MAX 0xC0000000
#define MEM_SIZE_MAX 0xC0000000
#define ELF_PATH_MAX 256
#define FLF_PATH_MIN 1
#define ELF_PAGESTART(_v) ((_v) & ~(rt_ubase_t)(ARCH_PAGE_SIZE - 1))
#define ELF_PAGEOFFSET(_v) ((_v) & (ARCH_PAGE_SIZE - 1))
#define ELF_PAGEALIGN(_v) (((_v) + ARCH_PAGE_SIZE - 1) & ~(ARCH_PAGE_SIZE - 1))
#define ELF_EXEC_LOAD_ADDR USER_VADDR_START
#define ELF_INTERP_LOAD_ADDR LDSO_LOAD_VADDR
#define ELF_AUX_ENT(aux, id, val) \
do \
{ \
rt_base_t a = id; \
lwp_data_put(lwp, aux++, &a, sizeof(rt_ubase_t)); \
a = val; \
lwp_data_put(lwp, aux++, &a, sizeof(rt_ubase_t)); \
} while (0)
typedef struct
{
int fd;
char *filename;
rt_size_t file_len;
Elf_Ehdr ehdr;
Elf_Phdr *phdr;
rt_ubase_t map_size;
} elf_info_t;
typedef struct
{
struct rt_lwp *lwp;
struct process_aux *aux;
elf_info_t exec_info;
elf_info_t interp_info;
rt_ubase_t load_addr;
rt_ubase_t e_entry;
rt_ubase_t interp_base;
} elf_load_info_t;
static void elf_user_dump(struct rt_lwp *lwp, void *va, size_t len)
{
#ifdef ELF_DEBUG_DUMP
uint8_t *k_va;
int ret;
if (len < 16)
len = 16;
rt_kprintf("\r\n");
rt_kprintf("%s : user va : %p, len : 0x%x(%d)\n", __func__, va, len, len);
k_va = rt_malloc(len);
if (k_va == RT_NULL)
{
rt_kprintf("%s : malloc failed\n", __func__);
return;
}
rt_memset(k_va, 0, len);
ret = lwp_data_get(lwp, k_va, va, len);
if (ret != len)
{
rt_kprintf("%s : lwp_get_from_user failed, ret = %d\n", __func__, ret);
return;
}
rt_kprintf("%s : k_va : %p\n", __func__, k_va);
for (size_t i = 0; i < len; i += 16)
{
rt_kprintf(" %02x %02x %02x %02x %02x %02x %02x %02x ", k_va[i], k_va[i+1], k_va[i+2], k_va[i+3],
k_va[i+4], k_va[i+5], k_va[i+6], k_va[i+7]);
rt_kprintf(" %02x %02x %02x %02x %02x %02x %02x %02x \n", k_va[i+8], k_va[i+9], k_va[i+10], k_va[i+11],
k_va[i+12], k_va[i+13], k_va[i+14], k_va[i+15]);
}
rt_kprintf("\r\n");
rt_free(k_va);
#endif
}
rt_ubase_t elf_random_offset(void)
{
#ifdef ELF_LOAD_RANDOMIZE
return (rt_tick_get() % 65535) * ARCH_PAGE_SIZE;
#else
return ELF_PAGEALIGN(0);
#endif
}
static void *file_mmap(struct rt_lwp *lwp, int fd, rt_ubase_t load_addr,
rt_ubase_t map_size, size_t prot, size_t flags, rt_ubase_t offset)
{
uint8_t *map_va;
map_va = (uint8_t *)lwp_mmap2(lwp, (void *)load_addr, map_size, prot, flags, fd, offset >> ARCH_PAGE_SHIFT);
if (!map_va || (map_va != (uint8_t *)load_addr))
{
LOG_E("%s : lwp map user failed!", __func__);
return RT_NULL;
}
LOG_D(" %s : map va = %p load_addr : %p size : 0x%x", __func__, map_va, load_addr, map_size);
return map_va;
}
static int elf_file_open(const char *filename)
{
int fd = -1;
fd = open(filename, O_BINARY | O_RDONLY, 0);
if (fd < 0)
{
LOG_E("%s : elf file [%s] open failed!", __func__, filename);
}
return fd;
}
static int elf_file_close(int fd)
{
return close(fd);
}
static int elf_file_length(char *filename, rt_size_t *file_len)
{
int ret;
struct stat s = { 0 };
ret = stat(filename, &s);
if (ret != 0)
{
LOG_E("%s : error", __func__);
return -RT_ERROR;
}
*file_len = (rt_size_t)s.st_size;
return RT_EOK;
}
static int elf_file_read(rt_int32_t fd, rt_uint8_t *buffer, size_t size, off_t offset)
{
ssize_t read_len;
off_t pos;
if (size > 0)
{
pos = lseek(fd, offset, SEEK_SET);
if (pos != offset)
{
LOG_E("%s : seek file offset: 0x%x failed", __func__, offset);
return -RT_ERROR;
}
read_len = read(fd, buffer, size);
if (read_len != size)
{
LOG_E("%s : read from offset: 0x%x error", __func__, offset);
return -RT_ERROR;
}
}
return RT_EOK;
}
static rt_int32_t elf_check_ehdr(const Elf_Ehdr *ehdr, rt_uint32_t file_len)
{
if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG) != 0)
{
LOG_E("%s : e_ident error", __func__);
return -RT_ERROR;
}
if ((ehdr->e_type != ET_EXEC) && (ehdr->e_type != ET_DYN))
{
LOG_E("%s : e_type error", __func__);
return -RT_ERROR;
}
if (ehdr->e_machine == EM_NONE)
{
LOG_E("%s : e_machine is EM_NONE", __func__);
return -RT_ERROR;
}
if (ehdr->e_phnum > ELF_PHDR_NUM_MAX)
{
LOG_E("%s : e_phnum error", __func__);
return -RT_ERROR;
}
if (ehdr->e_phoff > file_len)
{
LOG_E("%s : e_phoff error", __func__);
return -RT_ERROR;
}
LOG_D("%s : e_entry : 0x%x", __func__, ehdr->e_entry);
return RT_EOK;
}
static int elf_check_phdr(const Elf_Phdr *phdr)
{
if (phdr->p_filesz > FILE_LENGTH_MAX)
{
LOG_E("%s : phdr p_filesz 0x%x error", __func__, phdr->p_filesz);
return -RT_ERROR;
}
if (phdr->p_offset > FILE_LENGTH_MAX)
{
LOG_E("%s : phdr p_offset 0x%x error", __func__, phdr->p_offset);
return -RT_ERROR;
}
if (phdr->p_memsz > MEM_SIZE_MAX)
{
LOG_E("%s[%d], phdr p_memsz 0x%x error", __func__, phdr->p_memsz);
return -RT_ERROR;
}
LOG_D("%s : phdr p_vaddr : 0x%x", __func__, phdr->p_vaddr);
return RT_EOK;
}
static int elf_load_ehdr(elf_info_t *elf_info)
{
int ret;
ret = elf_file_open(elf_info->filename);
if (ret < 0)
{
LOG_E("%s : elf_file_open %s failed", __func__, elf_info->filename);
return ret;
}
elf_info->fd = ret;
ret = elf_file_length(elf_info->filename, &elf_info->file_len);
if (ret != RT_EOK)
{
return -RT_ERROR;
}
ret = elf_file_read(elf_info->fd, (rt_uint8_t *)&elf_info->ehdr, sizeof(Elf_Ehdr), 0);
if (ret != RT_EOK)
{
LOG_E("%s : elf_file_read failed, ret : %d", __func__, ret);
return -RT_ERROR;
}
ret = elf_check_ehdr(&elf_info->ehdr, elf_info->file_len);
if (ret != RT_EOK)
{
LOG_E("%s : elf_check_ehdr failed, ret : %d", __func__, ret);
return -RT_ERROR;
}
return RT_EOK;
}
static int elf_load_phdr(elf_info_t *elf_info)
{
Elf_Ehdr *ehdr = &elf_info->ehdr;
uint32_t size;
int ret;
if (ehdr->e_phnum < 1)
{
return -RT_ERROR;
}
if (ehdr->e_phentsize != sizeof(Elf_Phdr))
{
return -RT_ERROR;
}
size = sizeof(Elf_Phdr) * ehdr->e_phnum;
if ((ehdr->e_phoff + size) > elf_info->file_len)
{
return -RT_ERROR;
}
elf_info->phdr = rt_malloc(size);
if (elf_info->phdr == RT_NULL)
{
LOG_E("%s : alloc phdr failed", __func__);
return -RT_ENOMEM;
}
ret = elf_file_read(elf_info->fd, (rt_uint8_t *)elf_info->phdr, size, ehdr->e_phoff);
if (ret != RT_EOK)
{
rt_free(elf_info->phdr);
elf_info->phdr = RT_NULL;
LOG_E("%s : elf_file_read failed, ret = %d", __func__, ret);
return -RT_ERROR;
}
return RT_EOK;
}
static int elf_load_interp(elf_load_info_t *load_info)
{
Elf_Phdr *phdr = load_info->exec_info.phdr;
int ret;
int i;
for (i = 0; i < load_info->exec_info.ehdr.e_phnum; ++i, ++phdr)
{
if (phdr->p_type != PT_INTERP)
{
continue;
}
if (elf_check_phdr(phdr) != RT_EOK)
{
return -RT_ERROR;
}
if ((phdr->p_filesz > ELF_PATH_MAX) || (phdr->p_filesz < FLF_PATH_MIN))
{
LOG_E("%s : phdr p_filesz error", __func__, phdr->p_filesz);
return -RT_ERROR;
}
if (phdr->p_offset + phdr->p_filesz > load_info->exec_info.file_len)
{
LOG_E("%s : phdr p_offset error", __func__, phdr->p_offset);
return -RT_ERROR;
}
load_info->interp_info.filename = rt_malloc(phdr->p_filesz);
if (load_info->interp_info.filename == RT_NULL)
{
LOG_E("%s : alloc elf interpreter failed", __func__);
return -RT_ENOMEM;
}
ret = elf_file_read(load_info->exec_info.fd, (rt_uint8_t *)load_info->interp_info.filename,
phdr->p_filesz, phdr->p_offset);
if (ret != RT_EOK)
{
LOG_E("%s : elf_file_read failed, ret = %d", __func__, ret);
ret = -RT_ERROR;
goto error_exit;
}
if (load_info->interp_info.filename[phdr->p_filesz - 1] != '\0')
{
LOG_E("%s : elf interpreter is invalid", __func__);
ret = -RT_ERROR;
goto error_exit;
}
LOG_D("%s : elf interpreter : %s", __func__, load_info->interp_info.filename);
ret = elf_load_ehdr(&load_info->interp_info);
if (ret != RT_EOK)
{
LOG_E("%s : elf_load_ehdr failed, ret = %d", __func__, ret);
goto error_exit;
}
ret = elf_load_phdr(&load_info->interp_info);
if (ret != RT_EOK)
{
LOG_E("%s : elf_load_phdr failed, ret = %d", __func__, ret);
goto error_exit;
}
break;
}
return RT_EOK;
error_exit:
return ret;
}
static int total_mapping_size(elf_info_t *elf_info)
{
int i;
int first_idx = -1;
int last_idx = -1;
for (i = 0; i < elf_info->ehdr.e_phnum; i++)
{
if (elf_info->phdr[i].p_type == PT_LOAD)
{
last_idx = i;
if (first_idx == -1)
first_idx = i;
}
}
if (first_idx == -1)
return -1;
elf_info->map_size = elf_info->phdr[last_idx].p_vaddr + elf_info->phdr[last_idx].p_memsz -
ELF_PAGESTART(elf_info->phdr[first_idx].p_vaddr);
return 0;
}
static rt_ubase_t elf_map(struct rt_lwp *lwp, const Elf_Phdr *elf_phdr, int fd, rt_ubase_t addr, size_t prot, size_t flags, rt_ubase_t map_size)
{
rt_ubase_t map_va = 0;
rt_ubase_t va_offset;
addr = ELF_PAGESTART(addr);
va_offset = elf_phdr->p_offset - ELF_PAGEOFFSET(elf_phdr->p_vaddr);
rt_ubase_t size;
if (map_size != 0)
{
size = map_size;
}
else
{
size = elf_phdr->p_memsz + ELF_PAGEOFFSET(elf_phdr->p_vaddr);
if (size == 0)
{
return addr;
}
}
map_va = (rt_ubase_t)file_mmap(lwp, fd, addr, size, prot, flags, va_offset);
return map_va;
}
static int elf_zero_bss(struct rt_lwp *lwp, int fd, const Elf_Phdr *phdr, rt_ubase_t bss_start,
rt_ubase_t bss_end)
{
lwp_data_set(lwp, (void *)bss_start, 0, bss_end - bss_start);
return RT_EOK;
}
static int elf_file_mmap(elf_load_info_t *load_info, elf_info_t *elf_info, rt_ubase_t *elfload_addr,
rt_uint32_t map_size, rt_ubase_t *load_base)
{
int ret, i;
rt_ubase_t map_va, bss_start, bss_end;
Elf_Ehdr *ehdr = &elf_info->ehdr;
Elf_Phdr *phdr = elf_info->phdr;
const Elf_Phdr *tmp_phdr = phdr;
int fd = elf_info->fd;
rt_ubase_t load_addr;
size_t prot = PROT_READ | PROT_WRITE;
size_t flags = MAP_FIXED | MAP_PRIVATE;
for (i = 0; i < ehdr->e_phnum; ++i, ++tmp_phdr)
{
if (tmp_phdr->p_type != PT_LOAD)
{
continue;
}
if (ehdr->e_type == ET_EXEC)
{
if (elf_check_phdr(tmp_phdr) != RT_EOK)
{
LOG_E("%s : elf_check_phdr failed", __func__);
return -RT_ERROR;
}
}
load_addr = tmp_phdr->p_vaddr + *load_base;
LOG_D("%s : p_vaddr : 0x%x, load_addr : 0x%x", __func__, tmp_phdr->p_vaddr, load_addr);
if ((tmp_phdr->p_vaddr == 0) && (*load_base == 0))
{
flags &= ~MAP_FIXED;
}
map_va = elf_map(load_info->lwp, tmp_phdr, fd, load_addr, prot, flags, map_size);
if (!map_va)
{
LOG_E("%s : elf_map failed", __func__);
return -ENOMEM;
}
map_size = 0;
elf_user_dump(load_info->lwp, (void *)load_addr, 64);
if ((tmp_phdr->p_memsz > tmp_phdr->p_filesz) && (tmp_phdr->p_flags & PF_W))
{
bss_start = load_addr + tmp_phdr->p_filesz;
bss_end = load_addr + tmp_phdr->p_memsz;
ret = elf_zero_bss(load_info->lwp, fd, tmp_phdr, bss_start, bss_end);
if (ret)
{
LOG_E("%s : elf_zero_bss error", __func__);
return ret;
}
}
if (*elfload_addr == 0)
{
*elfload_addr = map_va + ELF_PAGEOFFSET(tmp_phdr->p_vaddr);
LOG_D("%s elf_load_addr : %p, vAddr : %p, load_base : %p, map_va : %p", __func__,
*elfload_addr, tmp_phdr->p_vaddr, *load_base, map_va);
}
if ((*load_base == 0) && (ehdr->e_type == ET_DYN))
{
*load_base = map_va;
}
}
return RT_EOK;
}
static int load_elf_interp(elf_load_info_t *load_info, rt_ubase_t *interp_base)
{
int ret;
rt_ubase_t load_base = ELF_INTERP_LOAD_ADDR + elf_random_offset();
ret = total_mapping_size(&load_info->interp_info);
if (ret)
{
LOG_E("%s : total_mapping_size failed", __func__);
return -RT_ERROR;
}
LOG_D("%s : total_mapping_size 0x%x", __func__, load_info->interp_info.map_size);
return elf_file_mmap(load_info, &load_info->interp_info, interp_base,
load_info->interp_info.map_size, &load_base);
}
static int elf_aux_fill(elf_load_info_t *load_info)
{
uint8_t *random;
struct process_aux *aux = load_info->aux;
elf_addr_t *aux_info;
uint32_t random_value = rt_tick_get();
size_t prot = PROT_READ | PROT_WRITE;
size_t flags = MAP_PRIVATE;
rt_lwp_t lwp = load_info->lwp;
void *va;
if (!aux)
{
LOG_E("%s : aux is null", __func__);
return -1;
}
aux_info = (elf_addr_t *)aux->item;
ELF_AUX_ENT(aux_info, AT_PAGESZ, ARCH_PAGE_SIZE);
va = lwp_mmap2(lwp, (void *)(USER_VADDR_TOP - ARCH_PAGE_SIZE * 2), ARCH_PAGE_SIZE, prot, flags, -1, 0);
if (!va)
{
LOG_E("lwp map user failed!");
return -RT_ERROR;
}
random = (uint8_t *)(USER_VADDR_TOP - ARCH_PAGE_SIZE - sizeof(char[16]));
lwp_data_put(load_info->lwp, random, &random_value, sizeof(random_value));
ELF_AUX_ENT(aux_info, AT_RANDOM, (size_t)random);
ELF_AUX_ENT(aux_info, AT_PHDR, (size_t)load_info->load_addr + load_info->exec_info.ehdr.e_phoff);
ELF_AUX_ENT(aux_info, AT_PHNUM, (size_t)load_info->exec_info.ehdr.e_phnum);
ELF_AUX_ENT(aux_info, AT_PHENT, sizeof(Elf_Phdr));
ELF_AUX_ENT(aux_info, AT_BASE, load_info->interp_base);
ELF_AUX_ENT(aux_info, AT_FLAGS, 0);
ELF_AUX_ENT(aux_info, AT_ENTRY, load_info->exec_info.ehdr.e_entry);
ELF_AUX_ENT(aux_info, AT_UID, 0);
ELF_AUX_ENT(aux_info, AT_EUID, 0);
ELF_AUX_ENT(aux_info, AT_GID, 0);
ELF_AUX_ENT(aux_info, AT_EGID, 0);
ELF_AUX_ENT(aux_info, AT_HWCAP, 0);
ELF_AUX_ENT(aux_info, AT_CLKTCK, 0);
ELF_AUX_ENT(aux_info, AT_SECURE, 0);
return 0;
}
static int elf_load_segment(elf_load_info_t *load_info)
{
int ret;
rt_ubase_t app_load_base = 0;
load_info->load_addr = 0;
load_info->interp_base = 0;
load_info->exec_info.map_size = 0;
if (load_info->exec_info.ehdr.e_type == ET_DYN)
{
ret = total_mapping_size(&load_info->exec_info);
if (ret)
{
LOG_E("%s : total_mapping_size failed", __func__);
return -RT_ERROR;
}
LOG_D("%s : map_size : 0x%x", __func__, load_info->exec_info.map_size);
app_load_base = ELF_EXEC_LOAD_ADDR + elf_random_offset();
}
ret = elf_file_mmap(load_info, &load_info->exec_info, &load_info->load_addr,
load_info->exec_info.map_size, &app_load_base);
elf_file_close(load_info->exec_info.fd);
if (ret != RT_EOK)
{
LOG_W("%s : elf_file_close exec failed", __func__);
}
load_info->exec_info.fd = ELF_INVALID_FD;
if (load_info->interp_info.fd != ELF_INVALID_FD)
{
ret = load_elf_interp(load_info, &load_info->interp_base);
if (ret)
{
LOG_E("%s : load_elf_interp failed, ret = %d", __func__, ret);
return ret;
}
elf_file_close(load_info->interp_info.fd);
if (ret != RT_EOK)
{
LOG_W("%s : elf_file_close interp failed, ret = %d", __func__, ret);
}
load_info->interp_info.fd = ELF_INVALID_FD;
load_info->e_entry = load_info->interp_info.ehdr.e_entry + load_info->interp_base;
load_info->exec_info.ehdr.e_entry = load_info->exec_info.ehdr.e_entry + app_load_base;
}
else
{
load_info->e_entry = load_info->exec_info.ehdr.e_entry;
}
load_info->lwp->text_entry = (void *)load_info->e_entry;
LOG_D("%s : lwp->text_entry : %p loadaddr : %p", __func__, load_info->lwp->text_entry, app_load_base);
elf_user_dump(load_info->lwp, load_info->lwp->text_entry, 64);
ret = elf_aux_fill(load_info);
if (ret)
{
LOG_E("%s : elf_aux_fill failed", __func__);
return ret;
}
return RT_EOK;
}
static void elf_load_deinit(elf_load_info_t *load_info)
{
if (load_info->exec_info.fd != ELF_INVALID_FD)
{
elf_file_close(load_info->exec_info.fd);
}
if (load_info->interp_info.fd != ELF_INVALID_FD)
{
elf_file_close(load_info->interp_info.fd);
}
if (load_info->exec_info.phdr != RT_NULL)
{
rt_free(load_info->exec_info.phdr);
}
if (load_info->exec_info.filename != RT_NULL)
{
rt_free(load_info->exec_info.filename);
}
if (load_info->interp_info.phdr != RT_NULL)
{
rt_free(load_info->interp_info.phdr);
}
if (load_info->interp_info.filename != RT_NULL)
{
rt_free(load_info->interp_info.filename);
}
}
static int elf_load_app(elf_info_t *exec_info)
{
int ret;
ret = elf_load_ehdr(exec_info);
if (ret != RT_EOK)
{
return ret;
}
ret = elf_load_phdr(exec_info);
if (ret != RT_EOK)
{
return ret;
}
return ret;
}
static int elf_file_load(elf_load_info_t *load_info)
{
int ret;
ret = elf_load_app(&load_info->exec_info);
if (ret != RT_EOK)
{
goto OUT;
}
ret = elf_load_interp(load_info);
if (ret != RT_EOK)
{
goto OUT;
}
ret = elf_load_segment(load_info);
if (ret != RT_EOK)
{
goto OUT;
}
OUT:
elf_load_deinit(load_info);
return ret;
}
int lwp_load(const char *filename, struct rt_lwp *lwp, uint8_t *load_addr, size_t addr_size,
struct process_aux *aux_ua)
{
elf_load_info_t load_info = { 0 };
int len;
int ret;
if (filename == RT_NULL)
{
LOG_E("%s : file is NULL", __func__);
return -RT_ERROR;
}
len = rt_strlen(filename);
if (len < FLF_PATH_MIN || len > ELF_PATH_MAX)
{
LOG_E("%s : file length (%d) invalid", __func__, len);
return -RT_ERROR;
}
load_info.exec_info.filename = rt_malloc(len + 1);
if (!load_info.exec_info.filename)
{
LOG_E("%s : alloc filename failed", __func__, len);
return -RT_ERROR;
}
else
{
rt_memset(load_info.exec_info.filename, 0, len + 1);
rt_strncpy(load_info.exec_info.filename, filename, len);
}
load_info.lwp = lwp;
load_info.aux = aux_ua;
load_info.exec_info.fd = ELF_INVALID_FD;
load_info.interp_info.fd = ELF_INVALID_FD;
load_info.load_addr = (rt_ubase_t)load_addr;
/* copy file name to process name */
rt_strncpy(lwp->cmd, filename, RT_NAME_MAX);
lwp->exe_file = dfs_normalize_path(NULL, filename); // malloc
ret = elf_file_load(&load_info);
if (ret != RT_EOK)
{
LOG_E("%s : elf_file_load error, ret : %d", __func__, ret);
return ret;
}
return RT_EOK;
}
#endif
View Git Blame Copy Permalink