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| author | kib <kib@FreeBSD.org> | 2012-04-12 10:48:43 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-04-12 10:48:43 +0000 |
| commit | 319ab382ef5fd326d3fab25c60ffe55702438a37 (patch) | |
| tree | b11cc6ba65a78e38d9da1d9122832b5385fa56c5 /sys/kern/kern_sig.c | |
| parent | aed1b833cf616d6a716d2a947c77fe99d6f3f925 (diff) | |
| download | FreeBSD-src-319ab382ef5fd326d3fab25c60ffe55702438a37.zip FreeBSD-src-319ab382ef5fd326d3fab25c60ffe55702438a37.tar.gz | |
Add thread-private flag to indicate that error value is already placed
in td_errno. Flag is supposed to be used by syscalls returning
EJUSTRETURN because errno was already placed into the usermode frame
by a call to set_syscall_retval(9). Both ktrace and dtrace get errno
value from td_errno if the flag is set.
Use the flag to fix sigsuspend(2) error return ktrace records.
Requested by: bde
MFC after: 1 week
Diffstat (limited to 'sys/kern/kern_sig.c')
| -rw-r--r-- | sys/kern/kern_sig.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 5460ffd..52a0c40 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -1465,6 +1465,8 @@ kern_sigsuspend(struct thread *td, sigset_t mask) mtx_unlock(&p->p_sigacts->ps_mtx); } PROC_UNLOCK(p); + td->td_errno = EINTR; + td->td_pflags |= TDP_NERRNO; return (EJUSTRETURN); } |
