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kernel/devfs: Check whether the node is a directory in devfs_open.

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Same checks as other filesystems.

Fixes "cp file /dev/some/block/device".

Change-Id: Ic4bd04972247b94ac4eaa6e211fe6cb1c53f3975
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9084
Reviewed-by: waddlesplash <[email protected]>
This commit is contained in:
Augustin Cavalier
2025-03-06 15:00:31 +00:00
committed by waddlesplash
parent 2d3b5776e7
commit 240f1a0e91
1 changed files with 5 additions and 0 deletions
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src/system/kernel/device_manager/devfs.cpp
+5
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@@ -1113,6 +1113,11 @@ devfs_open(fs_volume* _volume, fs_vnode* _vnode, int openMode,
struct devfs_cookie* cookie;
status_t status = B_OK;
if (S_ISDIR(vnode->stream.type) && (openMode & O_RWMASK) != O_RDONLY)
return B_IS_A_DIRECTORY;
if ((openMode & O_DIRECTORY) != 0 && !S_ISDIR(vnode->stream.type))
return B_NOT_A_DIRECTORY;
cookie = (struct devfs_cookie*)malloc(sizeof(struct devfs_cookie));
if (cookie == NULL)
return B_NO_MEMORY;