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37 lines
931 B
Markdown
37 lines
931 B
Markdown
## Permissions
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<!-- TODO(lucacasonato): what are permissions -->
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<!-- TODO(lucacasonato): description of all permissions -->
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### Permissions whitelist
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Deno also provides permissions whitelist.
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This is an example to restrict file system access by whitelist.
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```shell
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$ deno run --allow-read=/usr https://deno.land/std/examples/cat.ts /etc/passwd
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error: Uncaught PermissionDenied: read access to "/etc/passwd", run again with the --allow-read flag
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► $deno$/dispatch_json.ts:40:11
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at DenoError ($deno$/errors.ts:20:5)
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...
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```
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You can grant read permission under `/etc` dir
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```shell
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$ deno run --allow-read=/etc https://deno.land/std/examples/cat.ts /etc/passwd
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```
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`--allow-write` works same as `--allow-read`.
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This is an example to restrict host.
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```ts
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const result = await fetch("https://deno.land/");
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```
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```shell
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$ deno run --allow-net=deno.land https://deno.land/std/examples/curl.ts https://deno.land/
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```
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