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binutils 工具链&tcc使用实例

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This commit is contained in:
zhangzheng
2025-03-19 00:23:15 +08:00
parent 347a1372bc
commit 749e24ddb7
147 changed files with 41598 additions and 54359 deletions
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71
mkrtos_user/lib/letter-shell/demo/mkrtos/shell_fs_ext.c
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@@ -39,13 +39,13 @@ int ls(int argc, char *agrv[])
return -ENOMEM;
}
ret = getcwd(path, PAGE_SIZE);
if (ret < 0)
if (ret < 0)
{
u_free(path);
return ret;
}
ret = chdir(in_path);
if (ret < 0)
if (ret < 0)
{
u_free(path);
return ret;
@@ -71,7 +71,74 @@ int ls(int argc, char *agrv[])
return 0;
}
SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN), ls, ls, ls command);
int cp(int argc, char *argv[])
{
#define BUFFER_SIZE 64
int source_fd, target_fd;
ssize_t bytes_read, bytes_written;
char buffer[BUFFER_SIZE];
int ret;
// 检查参数数量
if (argc != 3)
{
fprintf(stderr, "用法: %s 源文件 目标文件\n", argv[0]);
return -1;
}
// 打开源文件
source_fd = open(argv[1], O_RDONLY);
if (source_fd == -1)
{
perror("无法打开源文件");
return -1;
}
struct stat st = {0};
ret = stat(argv[1], &st);
// 打开目标文件（如果不存在则创建，如果存在则截断）
target_fd = open(argv[2], O_WRONLY | O_CREAT, 0644);
if (target_fd == -1)
{
perror("无法打开目标文件");
close(source_fd);
return -1;
}
if (ftruncate(target_fd, st.st_size) < 0)
{
printf("设置文件大小错误\n");
return -1;
}
// 复制文件内容
while ((bytes_read = read(source_fd, buffer, BUFFER_SIZE)) > 0)
{
bytes_written = write(target_fd, buffer, bytes_read);
if (bytes_written != bytes_read)
{
perror("写入目标文件失败");
close(source_fd);
close(target_fd);
return -1;
}
}
if (bytes_read == -1)
{
perror("读取源文件失败");
}
// 关闭文件
close(source_fd);
close(target_fd);
printf("文件复制成功！\n");
return 0;
}
SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN), cp, cp, cp command);
int rm(int argc, char *agrv[])
{
int ret;