tree-wide: check if errno is greater than zero (2)

Compare errno with zero in a way that tells gcc that
(if the condition is true) errno is positive.

3 files changed, 3 insertions, 3 deletions

diff --git a/src/core/dbus-execute.c b/src/core/dbus-execute.c
index c2238c8c43..a38ba494e7 100644
--- a/src/core/dbus-execute.c
+++ b/src/core/dbus-execute.c
@@ -141,7 +141,7 @@ static int property_get_nice(
         else {
                 errno = 0;
                 n = getpriority(PRIO_PROCESS, 0);
-                if (errno != 0)
+                if (errno > 0)
                         n = 0;
         }
 
diff --git a/src/core/execute.c b/src/core/execute.c
index 90d37feb01..0028730889 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -2683,7 +2683,7 @@ void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) {
                 fputc('\n', f);
         }
 
-        if (c->syscall_errno != 0)
+        if (c->syscall_errno > 0)
                 fprintf(f,
                         "%sSystemCallErrorNumber: %s\n",
                         prefix, strna(errno_to_name(c->syscall_errno)));
diff --git a/src/core/manager.c b/src/core/manager.c
index 711b0cdcee..00a65d5835 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -233,7 +233,7 @@ static int have_ask_password(void) {
 
                 errno = 0;
                 de = readdir(dir);
-                if (!de && errno != 0)
+                if (!de && errno > 0)
                         return -errno;
                 if (!de)
                         return false;