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Code Issues Releases Wiki Activity

增加touch到绝对路径的功能

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This commit is contained in:
fslongjin
2022-07-07 10:27:40 +08:00
parent 8c8352e748
commit d32aa2d99c
5 changed files with 53 additions and 91 deletions
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21
kernel/syscall/syscall.c
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@ -144,7 +144,7 @@ uint64_t sys_open(struct pt_regs *regs)
// printk_color(ORANGE, BLACK, "Found %s\nDIR_FstClus:%#018lx\tDIR_FileSize:%#018lx\n", path, ((struct fat32_inode_info_t *)(dentry->dir_inode->private_inode_info))->first_clus, dentry->dir_inode->file_size);
// else
// printk_color(ORANGE, BLACK, "Can`t find file\n");
kdebug("flags=%#018lx", flags);
// kdebug("flags=%#018lx", flags);
if (dentry == NULL && flags & O_CREAT)
{
// 先找到倒数第二级目录
@ -159,7 +159,7 @@ uint64_t sys_open(struct pt_regs *regs)
}
struct vfs_dir_entry_t *parent_dentry = NULL;
kdebug("tmp_index=%d", tmp_index);
// kdebug("tmp_index=%d", tmp_index);
if (tmp_index > 0)
{
@ -183,7 +183,7 @@ uint64_t sys_open(struct pt_regs *regs)
dentry->name = (char *)kmalloc(dentry->name_length, 0);
memset(dentry->name, 0, dentry->name_length);
strncpy(dentry->name, path + tmp_index + 1, dentry->name_length);
kdebug("to create new file:%s namelen=%d", dentry->name, dentry->name_length)
// kdebug("to create new file:%s namelen=%d", dentry->name, dentry->name_length)
dentry->parent = parent_dentry;
uint64_t retval = parent_dentry->dir_inode->inode_ops->create(parent_dentry->dir_inode, dentry, 0);
if (retval != 0)
@ -197,7 +197,7 @@ uint64_t sys_open(struct pt_regs *regs)
list_init(&dentry->child_node_list);
list_init(&dentry->subdirs_list);
list_add(&parent_dentry->subdirs_list, &dentry->child_node_list);
kdebug("created.");
// kdebug("created.");
}
kfree(path);
if (dentry == NULL)
@ -466,12 +466,7 @@ uint64_t sys_brk(struct pt_regs *regs)
else
offset = -(int64_t)(current_pcb->mm->brk_end - new_brk);
/*
if (offset < 0)
{
kdebug("decrease brk, offset = %#010lx", (uint64_t)(-offset));
}
*/
new_brk = mm_do_brk(current_pcb->mm->brk_end, offset); // 扩展堆内存空间
@ -545,7 +540,7 @@ uint64_t sys_reboot(struct pt_regs *regs)
uint64_t sys_chdir(struct pt_regs *regs)
{
char *dest_path = (char *)regs->r8;
kdebug("dest_path=%s", dest_path);
// kdebug("dest_path=%s", dest_path);
// 检查目标路径是否为NULL
if (dest_path == NULL)
return -EFAULT;
@ -579,14 +574,14 @@ uint64_t sys_chdir(struct pt_regs *regs)
}
else
strncpy(path, dest_path, dest_path_len + 1);
kdebug("chdir: path = %s", path);
// kdebug("chdir: path = %s", path);
struct vfs_dir_entry_t *dentry = vfs_path_walk(path, 0);
kfree(path);
if (dentry == NULL)
return -ENOENT;
kdebug("dentry->name=%s, namelen=%d", dentry->name, dentry->name_length);
// kdebug("dentry->name=%s, namelen=%d", dentry->name, dentry->name_length);
// 目标不是目录
if (dentry->dir_inode->attribute != VFS_ATTR_DIR)
return -ENOTDIR;