diff options
| -rw-r--r-- | Documentation/git-update-ref.txt | 5 | ||||
| -rw-r--r-- | builtin-branch.c | 2 | ||||
| -rw-r--r-- | builtin-fetch--tool.c | 2 | ||||
| -rw-r--r-- | builtin-reflog.c | 2 | ||||
| -rw-r--r-- | builtin-update-ref.c | 11 | ||||
| -rw-r--r-- | fast-import.c | 2 | ||||
| -rwxr-xr-x | git-checkout.sh | 10 | ||||
| -rw-r--r-- | receive-pack.c | 2 | ||||
| -rw-r--r-- | refs.c | 30 | ||||
| -rw-r--r-- | refs.h | 3 |
10 files changed, 39 insertions, 30 deletions
diff --git a/Documentation/git-update-ref.txt b/Documentation/git-update-ref.txt index 9424feab32..f222616591 100644 --- a/Documentation/git-update-ref.txt +++ b/Documentation/git-update-ref.txt @@ -7,7 +7,7 @@ git-update-ref - Update the object name stored in a ref safely SYNOPSIS -------- -'git-update-ref' [-m <reason>] (-d <ref> <oldvalue> | <ref> <newvalue> [<oldvalue>]) +'git-update-ref' [-m <reason>] (-d <ref> <oldvalue> | [--no-deref] <ref> <newvalue> [<oldvalue>]) DESCRIPTION ----------- @@ -36,6 +36,9 @@ them and update them as a regular file (i.e. it will allow the filesystem to follow them, but will overwrite such a symlink to somewhere else with a regular filename). +If --no-deref is given, <ref> itself is overwritten, rather than +the result of following the symbolic pointers. + In general, using git-update-ref HEAD "$head" diff --git a/builtin-branch.c b/builtin-branch.c index 7408285050..6bd5843b47 100644 --- a/builtin-branch.c +++ b/builtin-branch.c @@ -462,7 +462,7 @@ static void create_branch(const char *name, const char *start_name, die("Not a valid branch point: '%s'.", start_name); hashcpy(sha1, commit->object.sha1); - lock = lock_any_ref_for_update(ref, NULL); + lock = lock_any_ref_for_update(ref, NULL, 0); if (!lock) die("Failed to lock ref for update: %s.", strerror(errno)); diff --git a/builtin-fetch--tool.c b/builtin-fetch--tool.c index 2065466f27..b14e78ac3f 100644 --- a/builtin-fetch--tool.c +++ b/builtin-fetch--tool.c @@ -42,7 +42,7 @@ static int update_ref(const char *action, if (!rla) rla = "(reflog update)"; snprintf(msg, sizeof(msg), "%s: %s", rla, action); - lock = lock_any_ref_for_update(refname, oldval); + lock = lock_any_ref_for_update(refname, oldval, 0); if (!lock) return 1; if (write_ref_sha1(lock, sha1, msg) < 0) diff --git a/builtin-reflog.c b/builtin-reflog.c index 4c39f1da98..ce093cad78 100644 --- a/builtin-reflog.c +++ b/builtin-reflog.c @@ -249,7 +249,7 @@ static int expire_reflog(const char *ref, const unsigned char *sha1, int unused, /* we take the lock for the ref itself to prevent it from * getting updated. */ - lock = lock_any_ref_for_update(ref, sha1); + lock = lock_any_ref_for_update(ref, sha1, 0); if (!lock) return error("cannot lock ref '%s'", ref); log_file = xstrdup(git_path("logs/%s", ref)); diff --git a/builtin-update-ref.c b/builtin-update-ref.c index 5ee960bf41..feac2ed12d 100644 --- a/builtin-update-ref.c +++ b/builtin-update-ref.c @@ -3,16 +3,17 @@ #include "builtin.h" static const char git_update_ref_usage[] = -"git-update-ref [-m <reason>] (-d <refname> <value> | <refname> <value> [<oldval>])"; +"git-update-ref [-m <reason>] (-d <refname> <value> | [--no-deref] <refname> <value> [<oldval>])"; int cmd_update_ref(int argc, const char **argv, const char *prefix) { const char *refname=NULL, *value=NULL, *oldval=NULL, *msg=NULL; struct ref_lock *lock; unsigned char sha1[20], oldsha1[20]; - int i, delete; + int i, delete, ref_flags; delete = 0; + ref_flags = 0; git_config(git_default_config); for (i = 1; i < argc; i++) { @@ -30,6 +31,10 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix) delete = 1; continue; } + if (!strcmp("--no-deref", argv[i])) { + ref_flags |= REF_NODEREF; + continue; + } if (!refname) { refname = argv[i]; continue; @@ -59,7 +64,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix) if (oldval && *oldval && get_sha1(oldval, oldsha1)) die("%s: not a valid old SHA1", oldval); - lock = lock_any_ref_for_update(refname, oldval ? oldsha1 : NULL); + lock = lock_any_ref_for_update(refname, oldval ? oldsha1 : NULL, ref_flags); if (!lock) die("%s: cannot lock the ref", refname); if (write_ref_sha1(lock, sha1, msg) < 0) diff --git a/fast-import.c b/fast-import.c index 3a2d5ed8e6..ffa00fd3c6 100644 --- a/fast-import.c +++ b/fast-import.c @@ -1271,7 +1271,7 @@ static int update_branch(struct branch *b) if (read_ref(b->name, old_sha1)) hashclr(old_sha1); - lock = lock_any_ref_for_update(b->name, old_sha1); + lock = lock_any_ref_for_update(b->name, old_sha1, 0); if (!lock) return error("Unable to lock %s", b->name); if (!force_update && !is_null_sha1(old_sha1)) { diff --git a/git-checkout.sh b/git-checkout.sh index ed7c2c5f6a..6b6facfd5a 100755 --- a/git-checkout.sh +++ b/git-checkout.sh @@ -270,15 +270,7 @@ if [ "$?" -eq 0 ]; then fi elif test -n "$detached" then - # NEEDSWORK: we would want a command to detach the HEAD - # atomically, instead of this handcrafted command sequence. - # Perhaps: - # git update-ref --detach HEAD $new - # or something like that... - # - git-rev-parse HEAD >"$GIT_DIR/HEAD.new" && - mv "$GIT_DIR/HEAD.new" "$GIT_DIR/HEAD" && - git-update-ref -m "checkout: moving to $arg" HEAD "$detached" || + git-update-ref --no-deref -m "checkout: moving to $arg" HEAD "$detached" || die "Cannot detach HEAD" if test -n "$detach_warn" then diff --git a/receive-pack.c b/receive-pack.c index 26aa26bcb5..d3c422be58 100644 --- a/receive-pack.c +++ b/receive-pack.c @@ -209,7 +209,7 @@ static const char *update(struct command *cmd) return NULL; /* good */ } else { - lock = lock_any_ref_for_update(name, old_sha1); + lock = lock_any_ref_for_update(name, old_sha1, 0); if (!lock) { error("failed to lock %s", name); return "failed to lock"; @@ -736,19 +736,20 @@ static int is_refname_available(const char *ref, const char *oldref, return 1; } -static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int *flag) +static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int flags, int *type_p) { char *ref_file; const char *orig_ref = ref; struct ref_lock *lock; struct stat st; int last_errno = 0; + int type; int mustexist = (old_sha1 && !is_null_sha1(old_sha1)); lock = xcalloc(1, sizeof(struct ref_lock)); lock->lock_fd = -1; - ref = resolve_ref(ref, lock->old_sha1, mustexist, flag); + ref = resolve_ref(ref, lock->old_sha1, mustexist, &type); if (!ref && errno == EISDIR) { /* we are trying to lock foo but we used to * have foo/bar which now does not exist; @@ -761,8 +762,10 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char error("there are still refs under '%s'", orig_ref); goto error_return; } - ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, flag); + ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, &type); } + if (type_p) + *type_p = type; if (!ref) { last_errno = errno; error("unable to resolve reference %s: %s", @@ -780,10 +783,15 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char lock->lk = xcalloc(1, sizeof(struct lock_file)); + if (flags & REF_NODEREF) + ref = orig_ref; lock->ref_name = xstrdup(ref); lock->orig_ref_name = xstrdup(orig_ref); ref_file = git_path("%s", ref); - lock->force_write = lstat(ref_file, &st) && errno == ENOENT; + if (lstat(ref_file, &st) && errno == ENOENT) + lock->force_write = 1; + if ((flags & REF_NODEREF) && (type & REF_ISSYMREF)) + lock->force_write = 1; if (safe_create_leading_directories(ref_file)) { last_errno = errno; @@ -806,14 +814,14 @@ struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1) if (check_ref_format(ref)) return NULL; strcpy(refpath, mkpath("refs/%s", ref)); - return lock_ref_sha1_basic(refpath, old_sha1, NULL); + return lock_ref_sha1_basic(refpath, old_sha1, 0, NULL); } -struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1) +struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags) { if (check_ref_format(ref) == -1) return NULL; - return lock_ref_sha1_basic(ref, old_sha1, NULL); + return lock_ref_sha1_basic(ref, old_sha1, flags, NULL); } static struct lock_file packlock; @@ -858,7 +866,7 @@ int delete_ref(const char *refname, const unsigned char *sha1) struct ref_lock *lock; int err, i, ret = 0, flag = 0; - lock = lock_ref_sha1_basic(refname, sha1, &flag); + lock = lock_ref_sha1_basic(refname, sha1, 0, &flag); if (!lock) return 1; if (!(flag & REF_ISPACKED)) { @@ -909,7 +917,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) if (!is_refname_available(newref, oldref, get_loose_refs(), 0)) return 1; - lock = lock_ref_sha1_basic(renamed_ref, NULL, NULL); + lock = lock_ref_sha1_basic(renamed_ref, NULL, 0, NULL); if (!lock) return error("unable to lock %s", renamed_ref); lock->force_write = 1; @@ -963,7 +971,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) } logmoved = log; - lock = lock_ref_sha1_basic(newref, NULL, NULL); + lock = lock_ref_sha1_basic(newref, NULL, 0, NULL); if (!lock) { error("unable to lock %s for update", newref); goto rollback; @@ -979,7 +987,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) return 0; rollback: - lock = lock_ref_sha1_basic(oldref, NULL, NULL); + lock = lock_ref_sha1_basic(oldref, NULL, 0, NULL); if (!lock) { error("unable to lock %s for rollback", oldref); goto rollbacklog; @@ -33,7 +33,8 @@ extern int get_ref_sha1(const char *ref, unsigned char *sha1); extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1); /** Locks any ref (for 'HEAD' type refs). */ -extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1); +#define REF_NODEREF 0x01 +extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags); /** Release any lock taken but not written. **/ extern void unlock_ref(struct ref_lock *lock); |