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-rw-r--r--libmount/samples/Makemodule.am11
-rw-r--r--libmount/samples/overwrite.c58
2 files changed, 69 insertions, 0 deletions
diff --git a/libmount/samples/Makemodule.am b/libmount/samples/Makemodule.am
new file mode 100644
index 0000000..e223ea6
--- /dev/null
+++ b/libmount/samples/Makemodule.am
@@ -0,0 +1,11 @@
+
+check_PROGRAMS += \
+ sample-mount-overwrite
+
+sample_mount_cflags = $(AM_CFLAGS) -I$(ul_libmount_incdir)
+sample_mount_ldadd = libmount.la $(LDADD)
+
+
+sample_mount_overwrite_SOURCES = libmount/samples/overwrite.c
+sample_mount_overwrite_LDADD = $(sample_mount_ldadd)
+sample_mount_overwrite_CFLAGS = $(sample_mount_cflags)
diff --git a/libmount/samples/overwrite.c b/libmount/samples/overwrite.c
new file mode 100644
index 0000000..ff11b71
--- /dev/null
+++ b/libmount/samples/overwrite.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2023 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ *
+ *
+ * This sample reads the mountpoint entry from /etc/fstab and mounts it to the
+ * different (on the command line specified) mountpoint. The mount options
+ * settings are read from fstab.
+ */
+#include <stdlib.h>
+
+#include "c.h"
+
+#include "libmount.h"
+
+
+int main(int argc, char *argv[])
+{
+ char *target, *fstab_target;
+ struct libmnt_table *tab;
+ struct libmnt_fs *fs;
+ struct libmnt_context *cxt;
+ int rc;
+
+ if (argc != 3)
+ errx(EXIT_FAILURE, "usage: %s <mnt-from-fstab> <target>",
+ program_invocation_short_name);
+
+ fstab_target = argv[1];
+ target = argv[2];
+
+ printf("Mounting %s from fstab to %s\n", fstab_target, target);
+
+ tab = mnt_new_table_from_file("/etc/fstab");
+ if (!tab)
+ err(EXIT_FAILURE, "failed to parse fstab");
+
+ fs = mnt_table_find_target(tab, fstab_target, MNT_ITER_FORWARD);
+ if (!fs)
+ err(EXIT_FAILURE, "cannot found %s in fstab", argv[1]);
+
+ cxt = mnt_new_context();
+ if (!cxt)
+ err(EXIT_FAILURE, "cannot allocate context");
+
+ mnt_context_set_fs(cxt, fs);
+ mnt_context_set_target(cxt, target);
+
+ rc = mnt_context_mount(cxt);
+
+ printf("Done: rc=%d status=%d\n", rc, mnt_context_get_status(cxt));
+
+ mnt_free_context(cxt);
+ mnt_unref_table(tab);
+ return rc == 0 && mnt_context_get_status(cxt) == 1 ? EXIT_SUCCESS : EXIT_FAILURE;
+}