diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index b648386ac9..bb75fe5807 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -4024,8 +4024,8 @@ qemuDomainScreenshot(virDomainPtr dom,
     if (!(tmp = g_strdup_printf("%s/qemu.screendump.XXXXXX", cfg->cacheDir)))
         goto endjob;
 
-    if ((tmp_fd = mkostemp(tmp, O_CLOEXEC)) == -1) {
-        virReportSystemError(errno, _("mkostemp(\"%s\") failed"), tmp);
+    if ((tmp_fd = g_mkstemp_full(tmp, O_CLOEXEC, S_IRUSR | S_IWUSR)) == -1) {
+        virReportSystemError(errno, _("g_mkstemp(\"%s\") failed"), tmp);
         goto endjob;
     }
     unlink_tmp = true;
@@ -11970,9 +11970,9 @@ qemuDomainMemoryPeek(virDomainPtr dom,
         goto endjob;
 
     /* Create a temporary filename. */
-    if ((fd = mkostemp(tmp, O_CLOEXEC)) == -1) {
+    if ((fd = g_mkstemp_full(tmp, O_CLOEXEC, S_IRUSR | S_IWUSR)) == -1) {
         virReportSystemError(errno,
-                             _("mkostemp(\"%s\") failed"), tmp);
+                             _("g_mkstemp(\"%s\") failed"), tmp);
         goto endjob;
     }
 
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index 04e4abcd6a..d8355d3c3c 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -2825,7 +2825,7 @@ virStoragePoolObjFindPoolByUUID(const unsigned char *uuid)
  *
  * Generate a name for a temporary file using the driver stateDir
  * as a path, the pool name, and the volume name to be used as input
- * for a mkostemp
+ * for mkstemp
  *
  * Returns a string pointer on success, NULL on failure
  */
diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
index 9ba9bb2a57..7c17d39509 100644
--- a/src/storage/storage_util.c
+++ b/src/storage/storage_util.c
@@ -1215,7 +1215,7 @@ storageBackendCreateQemuImgSecretPath(virStoragePoolObjPtr pool,
     if (!(secretPath = virStoragePoolObjBuildTempFilePath(pool, vol)))
         goto cleanup;
 
-    if ((fd = mkostemp(secretPath, O_CLOEXEC)) < 0) {
+    if ((fd = g_mkstemp_full(secretPath, O_CLOEXEC, S_IRUSR | S_IWUSR)) < 0) {
         virReportSystemError(errno, "%s",
                              _("failed to open secret file for write"));
         goto error;
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 47e77e63b7..05052e9d09 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -992,13 +992,7 @@ virLogOutputToJournald(virLogSourcePtr source,
      * and pass an FD to the journal
      */
 
-    /* NB: mkostemp is not declared async signal safe by
-     * POSIX, but this is Linux only code and the GLibc
-     * impl is safe enough, only using open() and inline
-     * asm to read a timestamp (falling back to gettimeofday
-     * on some arches
-     */
-    if ((buffd = mkostemp(path, O_CLOEXEC|O_RDWR)) < 0)
+    if ((buffd = g_mkstemp_full(path, O_CLOEXEC, S_IRUSR | S_IWUSR)) < 0)
         return;
 
     if (unlink(path) < 0)
diff --git a/src/vbox/vbox_common.c b/src/vbox/vbox_common.c
index 0bd47e3ddb..043c26b9f6 100644
--- a/src/vbox/vbox_common.c
+++ b/src/vbox/vbox_common.c
@@ -7385,8 +7385,8 @@ vboxDomainScreenshot(virDomainPtr dom,
 
     tmp = g_strdup_printf("%s/vbox.screendump.XXXXXX", cacheDir);
 
-    if ((tmp_fd = mkostemp(tmp, O_CLOEXEC)) == -1) {
-        virReportSystemError(errno, _("mkostemp(\"%s\") failed"), tmp);
+    if ((tmp_fd = g_mkstemp_full(tmp, O_CLOEXEC, S_IRUSR | S_IWUSR)) == -1) {
+        virReportSystemError(errno, _("g_mkstemp(\"%s\") failed"), tmp);
         VIR_FREE(tmp);
         VBOX_RELEASE(machine);
         return NULL;
diff --git a/tests/virfiletest.c b/tests/virfiletest.c
index c7d5f6abeb..193c5bedd4 100644
--- a/tests/virfiletest.c
+++ b/tests/virfiletest.c
@@ -133,7 +133,7 @@ makeSparseFile(const off_t offsets[],
     off_t len = 0;
     size_t i;
 
-    if ((fd = mkostemp(path,  O_CLOEXEC|O_RDWR)) < 0)
+    if ((fd = g_mkstemp_full(path,  O_CLOEXEC, S_IRUSR | S_IWUSR)) < 0)
         goto error;
 
     if (unlink(path) < 0)
diff --git a/tools/vsh.c b/tools/vsh.c
index 000cf6a009..d4a16acc03 100644
--- a/tools/vsh.c
+++ b/tools/vsh.c
@@ -2400,9 +2400,9 @@ vshEditWriteToTempFile(vshControl *ctl, const char *doc)
     tmpdir = getenv("TMPDIR");
     if (!tmpdir) tmpdir = "/tmp";
     ret = g_strdup_printf("%s/virshXXXXXX.xml", tmpdir);
-    fd = mkostemps(ret, 4, O_CLOEXEC);
+    fd = g_mkstemp_full(ret, O_CLOEXEC, S_IRUSR | S_IWUSR);
     if (fd == -1) {
-        vshError(ctl, _("mkostemps: failed to create temporary file: %s"),
+        vshError(ctl, _("g_mkstemp_full: failed to create temporary file: %s"),
                  virStrerror(errno, ebuf, sizeof(ebuf)));
         VIR_FREE(ret);
         return NULL;