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sandbox: Unprotect DATA regions in bus tests

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On my Ubuntu 18.04.1 machine two driver-model bus tests have started
failing recently. The problem appears to be that the DATA region of the
executable is protected. This does not seem correct, but perhaps there
is a reason.

To work around it, unprotect the regions in these tests before accessing
them.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2018-10-01 21:12:32 -06:00
parent 0a60a81ba3
commit 9f8037ea9c
3 changed files with 35 additions and 0 deletions
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12
include/os.h
View file

@ -334,4 +334,16 @@ void os_localtime(struct rtc_time *rt);
* os_abort() - Raise SIGABRT to exit sandbox (e.g. to debugger)
*/
void os_abort(void);
/**
* os_mprotect_allow() - Remove write-protection on a region of memory
*
* The start and length will be page-aligned before use.
*
* @start: Region start
* @len: Region length in bytes
* @return 0 if OK, -1 on error from mprotect()
*/
int os_mprotect_allow(void *start, size_t len);
#endif