Gitweb:
https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=941f67ed09155011f13...
Commit: 941f67ed09155011f13bb75db6aed621f94e2374
Parent: bbac843268ab353bb80a7f09841ff467bdcdeb04
Author: Zdenek Kabelac <zkabelac(a)redhat.com>
AuthorDate: Fri Mar 12 11:18:53 2021 +0100
Committer: Zdenek Kabelac <zkabelac(a)redhat.com>
CommitterDate: Sun Mar 14 16:34:38 2021 +0100
signals: add interruptible usleep
Add small wrapper that temporarily enables signal handling during
usleep() and return '0' when interrupted.
---
lib/misc/lvm-signal.c | 13 +++++++++++++
lib/misc/lvm-signal.h | 3 +++
2 files changed, 16 insertions(+)
diff --git a/lib/misc/lvm-signal.c b/lib/misc/lvm-signal.c
index b90a2db81..b1653a85c 100644
--- a/lib/misc/lvm-signal.c
+++ b/lib/misc/lvm-signal.c
@@ -153,3 +153,16 @@ void unblock_signals(void)
_signals_blocked = 0;
}
+
+/* usleep with enabled signal handler.
+ * Returns 1 when there was interruption */
+int interruptible_usleep(useconds_t usec)
+{
+ int r;
+
+ sigint_allow();
+ r = usleep(usec);
+ sigint_restore();
+
+ return (sigint_caught() || r) ? 1 : 0;
+}
diff --git a/lib/misc/lvm-signal.h b/lib/misc/lvm-signal.h
index 2f7309f5d..a39f77eb2 100644
--- a/lib/misc/lvm-signal.h
+++ b/lib/misc/lvm-signal.h
@@ -16,6 +16,8 @@
#ifndef _LVM_SIGNAL_H
#define _LVM_SIGNAL_H
+#include <unistd.h>
+
void remove_ctrl_c_handler(void);
void install_ctrl_c_handler(void);
int init_signals(int suppress_messages);
@@ -28,4 +30,5 @@ void sigint_clear(void);
void block_signals(uint32_t flags);
void unblock_signals(void);
+int interruptible_usleep(useconds_t usec);
#endif