syslog.c: Bring back setlogmask() from musl

The OSv implementation, where we took this from, dropped the setlogmask()
function. We bring it back from the musl implementation because it is needed by
Python 3.

Signed-off-by: Costin Lupu <costin.lupu@cs.pub.ro>
Reviewed-by: Vlad-Andrei Badoiu<vlad_andrei.badoiu@stud.acs.upb.ro>

diff --git a/musl-imported/src/syslog.c b/musl-imported/src/syslog.c
index 179224165be12bcb163b8ea0f25bb718245a7844..ee109f56f1006de8f6e99d3e98cc7314a2da2182 100644 (file)
--- a/musl-imported/src/syslog.c
+++ b/musl-imported/src/syslog.c
@@ -70,6 +70,7 @@
 static struct uk_mutex lock = UK_MUTEX_INITIALIZER(lock);
 static char log_ident[32];
 static int log_opt;
+static int log_mask = 0xff;
 static int log_facility = LOG_USER;
 
 void openlog(const char *ident, int opt, int facility)
@@ -95,6 +96,18 @@ void closelog(void)
 {
 }
 
+int setlogmask(int maskpri)
+{
+       int ret;
+
+       LOCK(lock);
+       ret = log_mask;
+       if (maskpri)
+               log_mask = maskpri;
+       UNLOCK(lock);
+       return ret;
+}
+
 void syslog(int priority, const char *message, ...)
 {
        va_list ap;
@@ -105,6 +118,9 @@ void syslog(int priority, const char *message, ...)
        int pid;
        int l, l2;
 
+       if (!(log_mask & LOG_MASK(priority & 7)) || (priority & ~0x3ff))
+               return;
+
        LOCK(lock);
 
        va_start(ap, message);