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git/branch.h
Junio C Hamano fa79937675 branch --set-upstream: regression fix
The "git branch" command, while not in listing mode, calls create_branch()
even when the target branch already exists, and it does so even when it is
not interested in updating the value of the branch (i.e. the name of the
commit object that sits at the tip of the existing branch). This happens
when the command is run with "--set-upstream" option.

The earlier safety-measure to prevent "git branch -f $branch $commit" from
updating the currently checked out branch did not take it into account,
and we no longer can update the tracking information of the current branch.

Minimally fix this regression by telling the validation code if it is
called to really update the value of a potentially existing branch, or if
the caller merely is interested in updating auxiliary aspects of a branch.

Reported-and-Tested-by: Jay Soffian
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-16 21:47:47 -07:00

49 lines
1.8 KiB
C

#ifndef BRANCH_H
#define BRANCH_H
/* Functions for acting on the information about branches. */
/*
* Creates a new branch, where head is the branch currently checked
* out, name is the new branch name, start_name is the name of the
* existing branch that the new branch should start from, force
* enables overwriting an existing (non-head) branch, reflog creates a
* reflog for the branch, and track causes the new branch to be
* configured to merge the remote branch that start_name is a tracking
* branch for (if any).
*/
void create_branch(const char *head, const char *name, const char *start_name,
int force, int reflog, enum branch_track track);
/*
* Validates that the requested branch may be created, returning the
* interpreted ref in ref, force indicates whether (non-head) branches
* may be overwritten. A non-zero return value indicates that the force
* parameter was non-zero and the branch already exists.
*
* Contrary to all of the above, when attr_only is 1, the caller is
* not interested in verifying if it is Ok to update the named
* branch to point at a potentially different commit. It is merely
* asking if it is OK to change some attribute for the named branch
* (e.g. tracking upstream).
*
* NEEDSWORK: This needs to be split into two separate functions in the
* longer run for sanity.
*
*/
int validate_new_branchname(const char *name, struct strbuf *ref, int force, int attr_only);
/*
* Remove information about the state of working on the current
* branch. (E.g., MERGE_HEAD)
*/
void remove_branch_state(void);
/*
* Configure local branch "local" as downstream to branch "remote"
* from remote "origin". Used by git branch --set-upstream.
*/
#define BRANCH_CONFIG_VERBOSE 01
extern void install_branch_config(int flag, const char *local, const char *origin, const char *remote);
#endif