lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-08-08 17:42:12 +03:00
Code Activity

hurd: handle EINTR during critical sections

Browse Source 
During critical sections, signal handling is deferred and thus RPCs return
EINTR, even if SA_RESTART is set. We thus have to restart the whole critical
section in that case.

This also adds HURD_CRITICAL_UNLOCK in the cases where one wants to
break the section in the middle.
This commit is contained in:
Samuel Thibault
2021-03-23 22:38:54 +00:00
parent a4ea18ec6c
commit c3b287be74
29 changed files with 139 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
sysdeps/mach/hurd/setuid.c
View File

@@ -32,6 +32,7 @@ __setuid (uid_t uid)
auth_t newauth;
error_t err;
retry:
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_id.lock);
err = _hurd_check_ids ();
@@ -86,6 +87,9 @@ __setuid (uid_t uid)
}
__mutex_unlock (&_hurd_id.lock);
HURD_CRITICAL_END;
if (err == EINTR)
/* Got a signal while inside an RPC of the critical section, retry again */
goto retry;
if (err)
return __hurd_fail (err);