diff options
Diffstat (limited to 'module/zcommon/zfs_namecheck.c')
| -rw-r--r-- | module/zcommon/zfs_namecheck.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/module/zcommon/zfs_namecheck.c b/module/zcommon/zfs_namecheck.c index 58b23b0e0..b1e0de6d8 100644 --- a/module/zcommon/zfs_namecheck.c +++ b/module/zcommon/zfs_namecheck.c @@ -232,6 +232,27 @@ entity_namecheck(const char *path, namecheck_err_t *why, char *what) } } + if (*end == '\0' || *end == '/') { + int component_length = end - start; + /* Validate the contents of this component is not '.' */ + if (component_length == 1) { + if (start[0] == '.') { + if (why) + *why = NAME_ERR_SELF_REF; + return (-1); + } + } + + /* Validate the content of this component is not '..' */ + if (component_length == 2) { + if (start[0] == '.' && start[1] == '.') { + if (why) + *why = NAME_ERR_PARENT_REF; + return (-1); + } + } + } + /* Snapshot or bookmark delimiter found */ if (*end == '@' || *end == '#') { /* Multiple delimiters are not allowed */ |