From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- src/shared/libmount-util.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 src/shared/libmount-util.c (limited to 'src/shared/libmount-util.c') diff --git a/src/shared/libmount-util.c b/src/shared/libmount-util.c new file mode 100644 index 0000000..3818904 --- /dev/null +++ b/src/shared/libmount-util.c @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include + +#include "libmount-util.h" + +int libmount_parse( + const char *path, + FILE *source, + struct libmnt_table **ret_table, + struct libmnt_iter **ret_iter) { + + _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL; + _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL; + int r; + + /* Older libmount seems to require this. */ + assert(!source || path); + + table = mnt_new_table(); + iter = mnt_new_iter(MNT_ITER_FORWARD); + if (!table || !iter) + return -ENOMEM; + + /* If source or path are specified, we use on the functions which ignore utab. + * Only if both are empty, we use mnt_table_parse_mtab(). */ + + if (source) + r = mnt_table_parse_stream(table, source, path); + else if (path) + r = mnt_table_parse_file(table, path); + else + r = mnt_table_parse_mtab(table, NULL); + if (r < 0) + return r; + + *ret_table = TAKE_PTR(table); + *ret_iter = TAKE_PTR(iter); + return 0; +} + +int libmount_is_leaf( + struct libmnt_table *table, + struct libmnt_fs *fs) { + int r; + + _cleanup_(mnt_free_iterp) struct libmnt_iter *iter_children = NULL; + iter_children = mnt_new_iter(MNT_ITER_FORWARD); + if (!iter_children) + return log_oom(); + + /* We care only whether it exists, it is unused */ + _unused_ struct libmnt_fs *child; + r = mnt_table_next_child_fs(table, iter_children, fs, &child); + if (r < 0) + return r; + + return r == 1; +} -- cgit v1.2.3