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对 /dev 目录做特殊处理

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zhkag 2023-03-29 11:13:35 +08:00 committed by guo
parent 1a7cd8b43f
commit f2dd21ccee
1 changed files with 10 additions and 1 deletions
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11
components/dfs/filesystems/devfs/devfs.c
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@ -40,6 +40,9 @@ int dfs_device_fs_ioctl(struct dfs_fd *file, int cmd, void *args)
dev_id = (rt_device_t)file->vnode->data;
RT_ASSERT(dev_id != RT_NULL);
if ((file->vnode->path[0] == '/') && (file->vnode->path[1] == '\0'))
return -RT_ENOSYS;
/* close device handler */
result = rt_device_control(dev_id, cmd, args);
if (result == RT_EOK)
@ -59,6 +62,9 @@ int dfs_device_fs_read(struct dfs_fd *file, void *buf, size_t count)
dev_id = (rt_device_t)file->vnode->data;
RT_ASSERT(dev_id != RT_NULL);
if ((file->vnode->path[0] == '/') && (file->vnode->path[1] == '\0'))
return -RT_ENOSYS;
/* read device data */
result = rt_device_read(dev_id, file->pos, buf, count);
file->pos += result;
@ -77,6 +83,9 @@ int dfs_device_fs_write(struct dfs_fd *file, const void *buf, size_t count)
dev_id = (rt_device_t)file->vnode->data;
RT_ASSERT(dev_id != RT_NULL);
if ((file->vnode->path[0] == '/') && (file->vnode->path[1] == '\0'))
return -RT_ENOSYS;
/* read device data */
result = rt_device_write(dev_id, file->pos, buf, count);
file->pos += result;
@ -97,7 +106,7 @@ int dfs_device_fs_close(struct dfs_fd *file)
return 0;
}
if (file->vnode->type == FT_DIRECTORY)
if (file->vnode->type == FT_DIRECTORY && (file->vnode->path[0] == '/') && (file->vnode->path[1] == '\0'))
{
struct device_dirent *root_dirent;