diff options
Diffstat (limited to 'source3/smbd/oplock_linux.c')
| -rw-r--r-- | source3/smbd/oplock_linux.c | 66 |
1 files changed, 17 insertions, 49 deletions
diff --git a/source3/smbd/oplock_linux.c b/source3/smbd/oplock_linux.c index 8087167ff4..51cce0ed48 100644 --- a/source3/smbd/oplock_linux.c +++ b/source3/smbd/oplock_linux.c @@ -43,19 +43,6 @@ #define F_SETSIG 10 #endif -/**************************************************************************** - Handle a LEASE signal, incrementing the signals_received and blocking the signal. -****************************************************************************/ - -static void signal_handler(int sig, siginfo_t *info, void *unused) -{ - if (oplock_signals_received < FD_PENDING_SIZE - 1) { - fd_pending_array[oplock_signals_received] = (SIG_ATOMIC_T)info->si_fd; - oplock_signals_received++; - } /* Else signal is lost. */ - sys_select_signal(RT_SIGNAL_LEASE); -} - /* * public function to get linux lease capability. Needed by some VFS modules (eg. gpfs.c) */ @@ -101,24 +88,17 @@ int linux_setlease(int fd, int leasetype) * oplock break protocol. ****************************************************************************/ -static files_struct *linux_oplock_receive_message(struct kernel_oplocks *ctx) +static void linux_oplock_signal_handler(struct tevent_context *ev_ctx, + struct tevent_signal *se, + int signum, int count, + void *_info, void *private_data) { - int fd; + siginfo_t *info = (siginfo_t *)_info; + int fd = info->si_fd; files_struct *fsp; - BlockSignals(True, RT_SIGNAL_LEASE); - fd = fd_pending_array[0]; fsp = file_find_fd(fd); - fd_pending_array[0] = (SIG_ATOMIC_T)-1; - if (oplock_signals_received > 1) - memmove(CONST_DISCARD(void *, &fd_pending_array[0]), - CONST_DISCARD(void *, &fd_pending_array[1]), - sizeof(SIG_ATOMIC_T)*(oplock_signals_received-1)); - oplock_signals_received--; - /* now we can receive more signals */ - BlockSignals(False, RT_SIGNAL_LEASE); - - return fsp; + break_kernel_oplock(smbd_messaging_context(), fsp); } /**************************************************************************** @@ -180,15 +160,6 @@ static void linux_release_kernel_oplock(struct kernel_oplocks *ctx, } /**************************************************************************** - See if a oplock message is waiting. -****************************************************************************/ - -static bool linux_oplock_msg_waiting(struct kernel_oplocks *ctx) -{ - return oplock_signals_received != 0; -} - -/**************************************************************************** See if the kernel supports oplocks. ****************************************************************************/ @@ -208,16 +179,14 @@ static bool linux_oplocks_available(void) ****************************************************************************/ static const struct kernel_oplocks_ops linux_koplocks = { - .receive_message = linux_oplock_receive_message, .set_oplock = linux_set_kernel_oplock, .release_oplock = linux_release_kernel_oplock, - .msg_waiting = linux_oplock_msg_waiting }; struct kernel_oplocks *linux_init_kernel_oplocks(TALLOC_CTX *mem_ctx) { - struct sigaction act; struct kernel_oplocks *ctx; + struct tevent_signal *se; if (!linux_oplocks_available()) { DEBUG(3,("Linux kernel oplocks not available\n")); @@ -232,19 +201,18 @@ struct kernel_oplocks *linux_init_kernel_oplocks(TALLOC_CTX *mem_ctx) ctx->ops = &linux_koplocks; - ZERO_STRUCT(act); - - act.sa_handler = NULL; - act.sa_sigaction = signal_handler; - act.sa_flags = SA_SIGINFO; - sigemptyset( &act.sa_mask ); - if (sigaction(RT_SIGNAL_LEASE, &act, NULL) != 0) { - DEBUG(0,("Failed to setup RT_SIGNAL_LEASE handler\n")); + se = tevent_add_signal(smbd_event_context(), + ctx, + RT_SIGNAL_LEASE, SA_SIGINFO, + linux_oplock_signal_handler, + ctx); + if (!se) { + DEBUG(0,("Failed to setup RT_SIGNAL_LEASE handler")); + TALLOC_FREE(ctx); return NULL; } - /* the signal can start off blocked due to a bug in bash */ - BlockSignals(False, RT_SIGNAL_LEASE); + ctx->private_data = se; DEBUG(3,("Linux kernel oplocks enabled\n")); |