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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-03-23 22:38:54 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-03-23 22:40:10 +0000 |
| commit | c3b287be74e12bdb15ed36e98d24fd42f8ee9122 (patch) | |
| tree | 82a9f85685a35bf5b12e480ee6ed1abc24103dc8 /hurd/hurdfchdir.c | |
| parent | a4ea18ec6cc3f1370efab09bc18c1badbf74aa13 (diff) | |
| download | glibc-c3b287be74e12bdb15ed36e98d24fd42f8ee9122.tar.xz glibc-c3b287be74e12bdb15ed36e98d24fd42f8ee9122.zip | |
hurd: handle EINTR during critical sections
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.
Diffstat (limited to 'hurd/hurdfchdir.c')
| -rw-r--r-- | hurd/hurdfchdir.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hurd/hurdfchdir.c b/hurd/hurdfchdir.c index 62a6ed1638..84dc292580 100644 --- a/hurd/hurdfchdir.c +++ b/hurd/hurdfchdir.c @@ -32,6 +32,7 @@ _hurd_change_directory_port_from_fd (struct hurd_port *portcell, int fd) if (!d) return __hurd_fail (EBADF); +retry: HURD_CRITICAL_BEGIN; ret = HURD_PORT_USE (&d->port, @@ -53,6 +54,9 @@ _hurd_change_directory_port_from_fd (struct hurd_port *portcell, int fd) })); HURD_CRITICAL_END; + if (ret == -1 && errno == EINTR) + /* Got a signal while inside an RPC of the critical section, retry again */ + goto retry; return ret; } |