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authorNick Mathewson <nickm@torproject.org>2016-05-04 15:10:36 -0400
committerNick Mathewson <nickm@torproject.org>2016-05-04 15:10:36 -0400
commitc7b9e0b8ed7076525da185e25c2142b18b4d43e3 (patch)
treed2f1429670f6b7f28b0765deb73d876e5ae18593 /src/common
parent34a51d162153f12d34f2445c6efa72dc4f6ddcd8 (diff)
downloadtor-c7b9e0b8ed7076525da185e25c2142b18b4d43e3.tar.gz
tor-c7b9e0b8ed7076525da185e25c2142b18b4d43e3.zip
Report success when not terminating an already terminated process.
Also, document the actual behavior and return values of tor_terminate_process. Fixes bug18686; bugfix on 0.2.3.9-alpha.
Diffstat (limited to 'src/common')
-rw-r--r--src/common/util.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/common/util.c b/src/common/util.c
index 04cc6b12c6..65af8a672a 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -3626,8 +3626,13 @@ format_helper_exit_status(unsigned char child_state, int saved_errno,
/* Maximum number of file descriptors, if we cannot get it via sysconf() */
#define DEFAULT_MAX_FD 256
-/** Terminate the process of <b>process_handle</b>.
- * Code borrowed from Python's os.kill. */
+/** Terminate the process of <b>process_handle</b>, if that process has not
+ * already exited.
+ *
+ * Return 0 if we succeeded in terminating the process (or if the process
+ * already exited), and -1 if we tried to kill the process but failed.
+ *
+ * Based on code originally borrowed from Python's os.kill. */
int
tor_terminate_process(process_handle_t *process_handle)
{
@@ -3647,7 +3652,7 @@ tor_terminate_process(process_handle_t *process_handle)
}
#endif
- return -1;
+ return 0; /* We didn't need to kill the process, so report success */
}
/** Return the Process ID of <b>process_handle</b>. */