mirror of
https://github.com/RGBCube/serenity
synced 2025-05-15 06:14:58 +00:00
f4b95835d1
We've had quite some instances of people reintroducing these kinds of links because they didn't know about the "new" help:// scheme. This check should now prevent that from happening, though it might in rare circumstances trigger a false positive.
38 lines
668 B
Markdown
38 lines
668 B
Markdown
## Name
|
|
|
|
pmemdump - dump physical memory
|
|
|
|
## Synopsis
|
|
|
|
```**sh
|
|
$ pmemdump [-r] <offset> <length>
|
|
```
|
|
|
|
## Description
|
|
|
|
Dump a portion of the physical memory space.
|
|
|
|
|
|
## Options
|
|
|
|
* `-r`: Dump from /dev/mem with `read(2)` instead of doing `mmap(2)` on it.
|
|
|
|
## Examples
|
|
|
|
```sh
|
|
$ pmemdump -r 983040 65536
|
|
$ pmemdump 983040 65536
|
|
```
|
|
|
|
## Notes
|
|
|
|
The pmemdump utility opens the `/dev/mem` file, and gets a mapping by doing `mmap(2)`
|
|
on it.
|
|
|
|
Using the `-r` flag might be useful sometimes, especially when reading from an unaligned
|
|
reserved physical memory region when trying to `mmap(2)` `/dev/mem` on the specified
|
|
offset fails.
|
|
|
|
## See also
|
|
|
|
* [`mem`(4)](help://man/4/mem)
|