monitor: Fix return type of monitor_fdset_dup_fd_find

monitor_fdset_dup_fd_find_remove() and monitor_fdset_dup_fd_find() return mon_fdset->id which is int64_t. Downcasting from int64_t to int leads to a bug with removing fd from fdset with id >= 2^32. So, fix return types for these function. Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523094433.30297-1-yury-kotov@yandex-team.ru> Signed-off-by: Markus Armbruster <armbru@redhat.com>
yakuizhao · Jun 17, 2019 · 854f63d · 854f63d
1 parent 076243f
commit 854f63d
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Showing 3 changed files with 4 additions and 4 deletions.
diff --git a/include/monitor/monitor.h b/include/monitor/monitor.h
@@ -44,6 +44,6 @@ AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
 int monitor_fdset_get_fd(int64_t fdset_id, int flags);
 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd);
 void monitor_fdset_dup_fd_remove(int dup_fd);
-int monitor_fdset_dup_fd_find(int dup_fd);
+int64_t monitor_fdset_dup_fd_find(int dup_fd);
 
 #endif /* MONITOR_H */
diff --git a/monitor.c b/monitor.c
@@ -2604,7 +2604,7 @@ int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
     return -1;
 }
 
-static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
+static int64_t monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
 {
     MonFdset *mon_fdset;
     MonFdsetFd *mon_fdset_fd_dup;
@@ -2632,7 +2632,7 @@ static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
     return -1;
 }
 
-int monitor_fdset_dup_fd_find(int dup_fd)
+int64_t monitor_fdset_dup_fd_find(int dup_fd)
 {
     return monitor_fdset_dup_fd_find_remove(dup_fd, false);
 }

diff --git a/stubs/fdset.c b/stubs/fdset.c
@@ -6,7 +6,7 @@ int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
     return -1;
 }
 
-int monitor_fdset_dup_fd_find(int dup_fd)
+int64_t monitor_fdset_dup_fd_find(int dup_fd)
 {
     return -1;
 }