diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makemodule.am | 2 | ||||
| -rw-r--r-- | lib/fstree/node_from_path.c | 39 |
2 files changed, 40 insertions, 1 deletions
diff --git a/lib/Makemodule.am b/lib/Makemodule.am index 6418568..23ce70d 100644 --- a/lib/Makemodule.am +++ b/lib/Makemodule.am @@ -3,7 +3,7 @@ libfstree_a_SOURCES += lib/fstree/fstree_sort.c lib/fstree/fstree_from_dir.c libfstree_a_SOURCES += lib/fstree/gen_inode_table.c lib/fstree/get_path.c libfstree_a_SOURCES += lib/fstree/node_stat.c lib/fstree/mknode.c libfstree_a_SOURCES += lib/fstree/add_by_path.c lib/fstree/xattr.c -libfstree_a_SOURCES += include/fstree.h +libfstree_a_SOURCES += lib/fstree/node_from_path.c include/fstree.h libfstree_a_CFLAGS = $(AM_CFLAGS) libfstree_a_CPPFLAGS = $(AM_CPPFLAGS) diff --git a/lib/fstree/node_from_path.c b/lib/fstree/node_from_path.c new file mode 100644 index 0000000..e617059 --- /dev/null +++ b/lib/fstree/node_from_path.c @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +#include "fstree.h" + +#include <string.h> +#include <errno.h> + +tree_node_t *fstree_node_from_path(fstree_t *fs, const char *path) +{ + tree_node_t *n = fs->root; + const char *end; + size_t len; + + while (path != NULL && *path != '\0') { + if (!S_ISDIR(n->mode)) { + errno = ENOTDIR; + return NULL; + } + + end = strchrnul(path, '/'); + len = end - path; + + for (n = n->data.dir->children; n != NULL; n = n->next) { + if (strncmp(path, n->name, len) != 0) + continue; + if (n->name[len] != '\0') + continue; + break; + } + + if (n == NULL) { + errno = ENOENT; + return NULL; + } + + path = *end ? (end + 1) : end; + } + + return n; +} |