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auth: AUTH_ACTIONS_FILESYSTEM_RENAME

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Matheus
2024-08-27 22:20:22 -03:00
parent 1536def1b8
commit 62d0cd1706
3 changed files with 40 additions and 15 deletions
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kernel-src/fs/vfs.c
+15 -1
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@@ -563,7 +563,21 @@ int vfs_rename(vnode_t *srcref, char *srcpath, vnode_t *dstref, char *dstpath, i
if (src != dst)
VOP_LOCK(src); // lock it again for the rename if they arent the same
if (0)
// check if we can rename the old file
err = auth_filesystem_check(getcred(), AUTH_ACTIONS_FILESYSTEM_RENAME, src, srcdir) ? EACCES : 0;
if (err)
goto cleanup_child;
if (dst) {
// and if we have a file, check if we can replace it
err = auth_filesystem_check(getcred(), AUTH_ACTIONS_FILESYSTEM_UNLINK, dst, dstdir) ? EACCES : 0;
if (err)
goto cleanup_child;
}
// and if we can then write the new link to the directory
err = VOP_ACCESS(dstdir, V_ACCESS_WRITE, getcred());
if (err)
goto cleanup_child;
err = VOP_RENAME(srcdir, src, srccomp, dstdir, dst, dstcomp, flags);