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Implement a quota for image data

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Kovid Goyal
2017-10-09 11:31:57 +05:30
parent b4b6968e07
commit f396fe59ca
3 changed files with 71 additions and 20 deletions
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graphics-protocol.asciidoc
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@@ -280,6 +280,9 @@ x=1, y=1 is the top left cell).
| `y` or `Y` | Delete all images that intersect the specified row, specified using the `y` key.
| `z` or `Z` | Delete all images that have the specified z-index, specified using the `z` key.
|===
Some examples:
```
@@ -288,7 +291,15 @@ Some examples:
<ESC>_Ga=Z,z=-1<ESC>\ # delete the images with z-index -1, also freeing up image data
<ESC>_Ga=P,x=3,y=4<ESC>\ # delete all images that intersect the cell at (3, 4)
```
|===
=== Image persistence and storage quotas
In order to avoid *Denial-of-Service* attacks, terminal emulators should have a
maximum storage quota for image data. It should allow at least a few full
screen images. For example the quota in kitty is 320MB per buffer. When adding
a new image, if the total size exceeds the quota, the terminal emulator should
delete older images to make space for the new one.
== Control data reference