From: Shreenidhi Shedi <sshedi@vmware.com>
Date: Tue, 15 Mar 2022 11:30:14 +0000 (+0530)
Subject: fix(configure): check for SYS-gettid during configure
X-Git-Tag: 057~65
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ef40d88124fe67726b8b5d8321dce064c727447;p=thirdparty%2Fdracut.git

fix(configure): check for SYS-gettid during configure

Signed-off-by: Shreenidhi Shedi <sshedi@vmware.com>
---

diff --git a/configure b/configure
index 3c7e6a1ff..91af41709 100755
--- a/configure
+++ b/configure
@@ -104,6 +104,32 @@ if test $found = no; then
     exit 1
 fi
 
+cat << EOF > conftest.c
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#ifndef SYS_gettid
+#error "SYS_gettid unavailable on this system"
+#endif
+
+#define gettid()    ((pid_t) syscall(SYS_gettid))
+
+int main(void) {
+  return getpid() == gettid() ? 0 : -1;
+}
+EOF
+
+# shellcheck disable=SC2086
+${CC} $CFLAGS $LDFLAGS conftest.c > /dev/null 2>&1
+ret=$?
+rm -f conftest.c a.out
+
+if test $ret -ne 0; then
+    echo "dracut needs SYS_gettid support." >&2
+    exit 1
+fi
+
 if test "$enable_dracut_cpio" = "yes"; then
     cargo --version > /dev/null
     ret=$?
diff --git a/src/install/util.c b/src/install/util.c
index 0af387c27..3d54f3883 100644
--- a/src/install/util.c
+++ b/src/install/util.c
@@ -28,10 +28,6 @@
 
 #include "util.h"
 
-#ifndef SYS_gettid
-#error "SYS_gettid unavailable on this system"
-#endif
-
 #define gettid()    ((pid_t) syscall(SYS_gettid))
 
 size_t page_size(void)