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-rw-r--r--sys-utils/swapon-common.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/sys-utils/swapon-common.c b/sys-utils/swapon-common.c
new file mode 100644
index 0000000..bffedec
--- /dev/null
+++ b/sys-utils/swapon-common.c
@@ -0,0 +1,117 @@
+
+#include "c.h"
+#include "nls.h"
+#include "xalloc.h"
+
+#include "swapon-common.h"
+
+/*
+ * content of /proc/swaps and /etc/fstab
+ */
+static struct libmnt_table *swaps, *fstab;
+
+struct libmnt_cache *mntcache;
+
+static int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)),
+ const char *filename, int line)
+{
+ if (filename)
+ warnx(_("%s: parse error at line %d -- ignored"), filename, line);
+ return 1;
+}
+
+struct libmnt_table *get_fstab(const char *filename)
+{
+ if (!fstab) {
+ fstab = mnt_new_table();
+ if (!fstab)
+ return NULL;
+ mnt_table_set_parser_errcb(fstab, table_parser_errcb);
+ mnt_table_set_cache(fstab, mntcache);
+ if (mnt_table_parse_fstab(fstab, filename) != 0)
+ return NULL;
+ }
+
+ return fstab;
+}
+
+struct libmnt_table *get_swaps(void)
+{
+ if (!swaps) {
+ swaps = mnt_new_table();
+ if (!swaps)
+ return NULL;
+ mnt_table_set_cache(swaps, mntcache);
+ mnt_table_set_parser_errcb(swaps, table_parser_errcb);
+ if (mnt_table_parse_swaps(swaps, NULL) != 0)
+ return NULL;
+ }
+
+ return swaps;
+}
+
+void free_tables(void)
+{
+ mnt_unref_table(swaps);
+ mnt_unref_table(fstab);
+}
+
+int match_swap(struct libmnt_fs *fs, void *data __attribute__((unused)))
+{
+ return fs && mnt_fs_is_swaparea(fs);
+}
+
+int is_active_swap(const char *filename)
+{
+ struct libmnt_table *st = get_swaps();
+ return st && mnt_table_find_source(st, filename, MNT_ITER_BACKWARD);
+}
+
+
+int cannot_find(const char *special)
+{
+ warnx(_("cannot find the device for %s"), special);
+ return -1;
+}
+
+/*
+ * Lists with -L and -U option
+ */
+static const char **llist;
+static size_t llct;
+static const char **ulist;
+static size_t ulct;
+
+
+void add_label(const char *label)
+{
+ llist = xrealloc(llist, (++llct) * sizeof(char *));
+ llist[llct - 1] = label;
+}
+
+const char *get_label(size_t i)
+{
+ return i < llct ? llist[i] : NULL;
+}
+
+size_t numof_labels(void)
+{
+ return llct;
+}
+
+void add_uuid(const char *uuid)
+{
+ ulist = xrealloc(ulist, (++ulct) * sizeof(char *));
+ ulist[ulct - 1] = uuid;
+}
+
+const char *get_uuid(size_t i)
+{
+ return i < ulct ? ulist[i] : NULL;
+}
+
+size_t numof_uuids(void)
+{
+ return ulct;
+}
+