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pwndbg/docs/commands/memory/mprotect.md

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# mprotect
```text
usage: mprotect [-h] addr length prot
```
Calls the mprotect syscall and prints its result value.
Note that the mprotect syscall may fail for various reasons
(see `man mprotect`) and a non-zero error return value
can be decoded with the `errno <value>` command.
### Positional arguments
|Positional Argument|Help|
| :--- | :--- |
|addr|Page-aligned address to all mprotect on.|
|length|Count of bytes to call mprotect on. Needs to be multiple of page size.|
|prot|Prot string as in mprotect(2). Eg. "PROT_READ\|PROT_EXEC", "rx", or "5"|
### Optional arguments
|Short|Long|Help|
| :--- | :--- | :--- |
|-h|--help|show this help message and exit|
### Examples
```text
mprotect $rsp 4096 PROT_READ|PROT_WRITE|PROT_EXEC
mprotect $rsp 4096 rwx
mprotect $rsp 4096 7
mprotect some_symbol 0x1000 PROT_NONE
```
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