diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/submodule.c b/submodule.c index 2e97032f86..2b7082b2db 100644 --- a/submodule.c +++ b/submodule.c @@ -51,6 +51,24 @@ int is_gitmodules_unmerged(const struct index_state *istate) } /* + * Check if the .gitmodules file is safe to write. + * + * Writing to the .gitmodules file requires that the file exists in the + * working tree or, if it doesn't, that a brand new .gitmodules file is going + * to be created (i.e. it's neither in the index nor in the current branch). + * + * It is not safe to write to .gitmodules if it's not in the working tree but + * it is in the index or in the current branch, because writing new values + * (and staging them) would blindly overwrite ALL the old content. + */ +int is_writing_gitmodules_ok(void) +{ + struct object_id oid; + return file_exists(GITMODULES_FILE) || + (get_oid(GITMODULES_INDEX, &oid) < 0 && get_oid(GITMODULES_HEAD, &oid) < 0); +} + +/* * Check if the .gitmodules file has unstaged modifications. This must be * checked before allowing modifications to the .gitmodules file with the * intention to stage them later, because when continuing we would stage the |