diff options
| -rw-r--r-- | Documentation/git-update-ref.txt | 18 | ||||
| -rw-r--r-- | builtin/checkout.c | 2 | ||||
| -rw-r--r-- | builtin/clone.c | 9 | ||||
| -rw-r--r-- | builtin/merge.c | 6 | ||||
| -rw-r--r-- | builtin/notes.c | 6 | ||||
| -rw-r--r-- | builtin/reset.c | 6 | ||||
| -rw-r--r-- | builtin/update-ref.c | 426 | ||||
| -rw-r--r-- | contrib/examples/builtin-fetch--tool.c | 3 | ||||
| -rw-r--r-- | notes-cache.c | 2 | ||||
| -rw-r--r-- | notes-utils.c | 3 | ||||
| -rw-r--r-- | refs.c | 195 | ||||
| -rw-r--r-- | refs.h | 94 | ||||
| -rwxr-xr-x | t/t1400-update-ref.sh | 100 |
13 files changed, 585 insertions, 285 deletions
diff --git a/Documentation/git-update-ref.txt b/Documentation/git-update-ref.txt index 0a0a5512b3..c8f5ae5cb3 100644 --- a/Documentation/git-update-ref.txt +++ b/Documentation/git-update-ref.txt @@ -68,7 +68,12 @@ performs all modifications together. Specify commands of the form: option SP <opt> LF Quote fields containing whitespace as if they were strings in C source -code. Alternatively, use `-z` to specify commands without quoting: +code; i.e., surrounded by double-quotes and with backslash escapes. +Use 40 "0" characters or the empty string to specify a zero value. To +specify a missing value, omit the value and its preceding SP entirely. + +Alternatively, use `-z` to specify in NUL-terminated format, without +quoting: update SP <ref> NUL <newvalue> NUL [<oldvalue>] NUL create SP <ref> NUL <newvalue> NUL @@ -76,8 +81,12 @@ code. Alternatively, use `-z` to specify commands without quoting: verify SP <ref> NUL [<oldvalue>] NUL option SP <opt> NUL -Lines of any other format or a repeated <ref> produce an error. -Command meanings are: +In this format, use 40 "0" to specify a zero value, and use the empty +string to specify a missing value. + +In either format, values can be specified in any form that Git +recognizes as an object name. Commands in any other format or a +repeated <ref> produce an error. Command meanings are: update:: Set <ref> to <newvalue> after verifying <oldvalue>, if given. @@ -102,9 +111,6 @@ option:: The only valid option is `no-deref` to avoid dereferencing a symbolic ref. -Use 40 "0" or the empty string to specify a zero value, except that -with `-z` an empty <oldvalue> is considered missing. - If all <ref>s can be locked with matching <oldvalue>s simultaneously, all modifications are performed. Otherwise, no modifications are performed. Note that while each individual diff --git a/builtin/checkout.c b/builtin/checkout.c index 07cf555309..ff4492162d 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -624,7 +624,7 @@ static void update_refs_for_switch(const struct checkout_opts *opts, /* Nothing to do. */ } else if (opts->force_detach || !new->path) { /* No longer on any branch. */ update_ref(msg.buf, "HEAD", new->commit->object.sha1, NULL, - REF_NODEREF, DIE_ON_ERR); + REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); if (!opts->quiet) { if (old->path && advice_detached_head) detach_advice(new->name); diff --git a/builtin/clone.c b/builtin/clone.c index 9b3c04d914..b12989d1ca 100644 --- a/builtin/clone.c +++ b/builtin/clone.c @@ -521,7 +521,7 @@ static void write_followtags(const struct ref *refs, const char *msg) if (!has_sha1_file(ref->old_sha1)) continue; update_ref(msg, ref->name, ref->old_sha1, - NULL, 0, DIE_ON_ERR); + NULL, 0, UPDATE_REFS_DIE_ON_ERR); } } @@ -589,14 +589,15 @@ static void update_head(const struct ref *our, const struct ref *remote, create_symref("HEAD", our->name, NULL); if (!option_bare) { const char *head = skip_prefix(our->name, "refs/heads/"); - update_ref(msg, "HEAD", our->old_sha1, NULL, 0, DIE_ON_ERR); + update_ref(msg, "HEAD", our->old_sha1, NULL, 0, + UPDATE_REFS_DIE_ON_ERR); install_branch_config(0, head, option_origin, our->name); } } else if (our) { struct commit *c = lookup_commit_reference(our->old_sha1); /* --branch specifies a non-branch (i.e. tags), detach HEAD */ update_ref(msg, "HEAD", c->object.sha1, - NULL, REF_NODEREF, DIE_ON_ERR); + NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); } else if (remote) { /* * We know remote HEAD points to a non-branch, or @@ -604,7 +605,7 @@ static void update_head(const struct ref *our, const struct ref *remote, * Detach HEAD in all these cases. */ update_ref(msg, "HEAD", remote->old_sha1, - NULL, REF_NODEREF, DIE_ON_ERR); + NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); } } diff --git a/builtin/merge.c b/builtin/merge.c index 66d8843301..7c9d8f2432 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -398,7 +398,7 @@ static void finish(struct commit *head_commit, const char *argv_gc_auto[] = { "gc", "--auto", NULL }; update_ref(reflog_message.buf, "HEAD", new_head, head, 0, - DIE_ON_ERR); + UPDATE_REFS_DIE_ON_ERR); /* * We ignore errors in 'gc --auto', since the * user should see them. @@ -1222,7 +1222,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) die(_("%s - not something we can merge"), argv[0]); read_empty(remote_head->object.sha1, 0); update_ref("initial pull", "HEAD", remote_head->object.sha1, - NULL, 0, DIE_ON_ERR); + NULL, 0, UPDATE_REFS_DIE_ON_ERR); goto done; } else { struct strbuf merge_names = STRBUF_INIT; @@ -1339,7 +1339,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) } update_ref("updating ORIG_HEAD", "ORIG_HEAD", head_commit->object.sha1, - NULL, 0, DIE_ON_ERR); + NULL, 0, UPDATE_REFS_DIE_ON_ERR); if (remoteheads && !common) ; /* No common ancestors found. We need a real merge. */ diff --git a/builtin/notes.c b/builtin/notes.c index 39c8573cde..820c34135c 100644 --- a/builtin/notes.c +++ b/builtin/notes.c @@ -717,7 +717,7 @@ static int merge_commit(struct notes_merge_options *o) strbuf_insert(&msg, 0, "notes: ", 7); update_ref(msg.buf, o->local_ref, sha1, is_null_sha1(parent_sha1) ? NULL : parent_sha1, - 0, DIE_ON_ERR); + 0, UPDATE_REFS_DIE_ON_ERR); free_notes(t); strbuf_release(&msg); @@ -812,11 +812,11 @@ static int merge(int argc, const char **argv, const char *prefix) if (result >= 0) /* Merge resulted (trivially) in result_sha1 */ /* Update default notes ref with new commit */ update_ref(msg.buf, default_notes_ref(), result_sha1, NULL, - 0, DIE_ON_ERR); + 0, UPDATE_REFS_DIE_ON_ERR); else { /* Merge has unresolved conflicts */ /* Update .git/NOTES_MERGE_PARTIAL with partial merge result */ update_ref(msg.buf, "NOTES_MERGE_PARTIAL", result_sha1, NULL, - 0, DIE_ON_ERR); + 0, UPDATE_REFS_DIE_ON_ERR); /* Store ref-to-be-updated into .git/NOTES_MERGE_REF */ if (create_symref("NOTES_MERGE_REF", default_notes_ref(), NULL)) die("Failed to store link to current notes ref (%s)", diff --git a/builtin/reset.c b/builtin/reset.c index f4e087596b..f368266762 100644 --- a/builtin/reset.c +++ b/builtin/reset.c @@ -252,11 +252,13 @@ static int reset_refs(const char *rev, const unsigned char *sha1) if (!get_sha1("HEAD", sha1_orig)) { orig = sha1_orig; set_reflog_message(&msg, "updating ORIG_HEAD", NULL); - update_ref(msg.buf, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR); + update_ref(msg.buf, "ORIG_HEAD", orig, old_orig, 0, + UPDATE_REFS_MSG_ON_ERR); } else if (old_orig) delete_ref("ORIG_HEAD", old_orig, 0); set_reflog_message(&msg, "updating HEAD", rev); - update_ref_status = update_ref(msg.buf, "HEAD", sha1, orig, 0, MSG_ON_ERR); + update_ref_status = update_ref(msg.buf, "HEAD", sha1, orig, 0, + UPDATE_REFS_MSG_ON_ERR); strbuf_release(&msg); return update_ref_status; } diff --git a/builtin/update-ref.c b/builtin/update-ref.c index 5c208bb1fc..405267f6e2 100644 --- a/builtin/update-ref.c +++ b/builtin/update-ref.c @@ -12,238 +12,329 @@ static const char * const git_update_ref_usage[] = { NULL }; -static int updates_alloc; -static int updates_count; -static const struct ref_update **updates; +static struct ref_transaction *transaction; static char line_termination = '\n'; static int update_flags; -static struct ref_update *update_alloc(void) -{ - struct ref_update *update; - - /* Allocate and zero-init a struct ref_update */ - update = xcalloc(1, sizeof(*update)); - ALLOC_GROW(updates, updates_count + 1, updates_alloc); - updates[updates_count++] = update; - - /* Store and reset accumulated options */ - update->flags = update_flags; - update_flags = 0; - - return update; -} - -static void update_store_ref_name(struct ref_update *update, - const char *ref_name) -{ - if (check_refname_format(ref_name, REFNAME_ALLOW_ONELEVEL)) - die("invalid ref format: %s", ref_name); - update->ref_name = xstrdup(ref_name); -} - -static void update_store_new_sha1(struct ref_update *update, - const char *newvalue) -{ - if (*newvalue && get_sha1(newvalue, update->new_sha1)) - die("invalid new value for ref %s: %s", - update->ref_name, newvalue); -} - -static void update_store_old_sha1(struct ref_update *update, - const char *oldvalue) -{ - if (*oldvalue && get_sha1(oldvalue, update->old_sha1)) - die("invalid old value for ref %s: %s", - update->ref_name, oldvalue); - - /* We have an old value if non-empty, or if empty without -z */ - update->have_old = *oldvalue || line_termination; -} - +/* + * Parse one whitespace- or NUL-terminated, possibly C-quoted argument + * and append the result to arg. Return a pointer to the terminator. + * Die if there is an error in how the argument is C-quoted. This + * function is only used if not -z. + */ static const char *parse_arg(const char *next, struct strbuf *arg) { - /* Parse SP-terminated, possibly C-quoted argument */ - if (*next != '"') + if (*next == '"') { + const char *orig = next; + + if (unquote_c_style(arg, next, &next)) + die("badly quoted argument: %s", orig); + if (*next && !isspace(*next)) + die("unexpected character after quoted argument: %s", orig); + } else { while (*next && !isspace(*next)) strbuf_addch(arg, *next++); - else if (unquote_c_style(arg, next, &next)) - die("badly quoted argument: %s", next); + } - /* Return position after the argument */ return next; } -static const char *parse_first_arg(const char *next, struct strbuf *arg) +/* + * Parse the reference name immediately after "command SP". If not + * -z, then handle C-quoting. Return a pointer to a newly allocated + * string containing the name of the reference, or NULL if there was + * an error. Update *next to point at the character that terminates + * the argument. Die if C-quoting is malformed or the reference name + * is invalid. + */ +static char *parse_refname(struct strbuf *input, const char **next) { - /* Parse argument immediately after "command SP" */ - strbuf_reset(arg); + struct strbuf ref = STRBUF_INIT; + if (line_termination) { /* Without -z, use the next argument */ - next = parse_arg(next, arg); + *next = parse_arg(*next, &ref); } else { - /* With -z, use rest of first NUL-terminated line */ - strbuf_addstr(arg, next); - next = next + arg->len; + /* With -z, use everything up to the next NUL */ + strbuf_addstr(&ref, *next); + *next += ref.len; } - return next; + + if (!ref.len) { + strbuf_release(&ref); + return NULL; + } + + if (check_refname_format(ref.buf, REFNAME_ALLOW_ONELEVEL)) + die("invalid ref format: %s", ref.buf); + + return strbuf_detach(&ref, NULL); } -static const char *parse_next_arg(const char *next, struct strbuf *arg) +/* + * The value being parsed is <oldvalue> (as opposed to <newvalue>; the + * difference affects which error messages are generated): + */ +#define PARSE_SHA1_OLD 0x01 + +/* + * For backwards compatibility, accept an empty string for update's + * <newvalue> in binary mode to be equivalent to specifying zeros. + */ +#define PARSE_SHA1_ALLOW_EMPTY 0x02 + +/* + * Parse an argument separator followed by the next argument, if any. + * If there is an argument, convert it to a SHA-1, write it to sha1, + * set *next to point at the character terminating the argument, and + * return 0. If there is no argument at all (not even the empty + * string), return 1 and leave *next unchanged. If the value is + * provided but cannot be converted to a SHA-1, die. flags can + * include PARSE_SHA1_OLD and/or PARSE_SHA1_ALLOW_EMPTY. + */ +static int parse_next_sha1(struct strbuf *input, const char **next, + unsigned char *sha1, + const char *command, const char *refname, + int flags) { - /* Parse next SP-terminated or NUL-terminated argument, if any */ - strbuf_reset(arg); + struct strbuf arg = STRBUF_INIT; + int ret = 0; + + if (*next == input->buf + input->len) + goto eof; + if (line_termination) { /* Without -z, consume SP and use next argument */ - if (!*next) - return NULL; - if (*next != ' ') - die("expected SP but got: %s", next); - next = parse_arg(next + 1, arg); + if (!**next || **next == line_termination) + return 1; + if (**next != ' ') + die("%s %s: expected SP but got: %s", + command, refname, *next); + (*next)++; + *next = parse_arg(*next, &arg); + if (arg.len) { + if (get_sha1(arg.buf, sha1)) + goto invalid; + } else { + /* Without -z, an empty value means all zeros: */ + hashclr(sha1); + } } else { /* With -z, read the next NUL-terminated line */ - if (*next) - die("expected NUL but got: %s", next); - if (strbuf_getline(arg, stdin, '\0') == EOF) - return NULL; - next = arg->buf + arg->len; + if (**next) + die("%s %s: expected NUL but got: %s", + command, refname, *next); + (*next)++; + if (*next == input->buf + input->len) + goto eof; + strbuf_addstr(&arg, *next); + *next += arg.len; + + if (arg.len) { + if (get_sha1(arg.buf, sha1)) + goto invalid; + } else if (flags & PARSE_SHA1_ALLOW_EMPTY) { + /* With -z, treat an empty value as all zeros: */ + warning("%s %s: missing <newvalue>, treating as zero", + command, refname); + hashclr(sha1); + } else { + /* + * With -z, an empty non-required value means + * unspecified: + */ + ret = 1; + } } - return next; + + strbuf_release(&arg); + + return ret; + + invalid: + die(flags & PARSE_SHA1_OLD ? + "%s %s: invalid <oldvalue>: %s" : + "%s %s: invalid <newvalue>: %s", + command, refname, arg.buf); + + eof: + die(flags & PARSE_SHA1_OLD ? + "%s %s: unexpected end of input when reading <oldvalue>" : + "%s %s: unexpected end of input when reading <newvalue>", + command, refname); } -static void parse_cmd_update(const char *next) + +/* + * The following five parse_cmd_*() functions parse the corresponding + * command. In each case, next points at the character following the + * command name and the following space. They each return a pointer + * to the character terminating the command, and die with an + * explanatory message if there are any parsing problems. All of + * these functions handle either text or binary format input, + * depending on how line_termination is set. + */ + +static const char *parse_cmd_update(struct strbuf *input, const char *next) { - struct strbuf ref = STRBUF_INIT; - struct strbuf newvalue = STRBUF_INIT; - struct strbuf oldvalue = STRBUF_INIT; - struct ref_update *update; + char *refname; + unsigned char new_sha1[20]; + unsigned char old_sha1[20]; + int have_old; - update = update_alloc(); + refname = parse_refname(input, &next); + if (!refname) + die("update: missing <ref>"); - if ((next = parse_first_arg(next, &ref)) != NULL && ref.buf[0]) - update_store_ref_name(update, ref.buf); - else - die("update line missing <ref>"); + if (parse_next_sha1(input, &next, new_sha1, "update", refname, + PARSE_SHA1_ALLOW_EMPTY)) + die("update %s: missing <newvalue>", refname); - if ((next = parse_next_arg(next, &newvalue)) != NULL) - update_store_new_sha1(update, newvalue.buf); - else - die("update %s missing <newvalue>", ref.buf); + have_old = !parse_next_sha1(input, &next, old_sha1, "update", refname, + PARSE_SHA1_OLD); - if ((next = parse_next_arg(next, &oldvalue)) != NULL) - update_store_old_sha1(update, oldvalue.buf); - else if(!line_termination) - die("update %s missing [<oldvalue>] NUL", ref.buf); + if (*next != line_termination) + die("update %s: extra input: %s", refname, next); - if (next && *next) - die("update %s has extra input: %s", ref.buf, next); + ref_transaction_update(transaction, refname, new_sha1, old_sha1, + update_flags, have_old); + + update_flags = 0; + free(refname); + + return next; } -static void parse_cmd_create(const char *next) +static const char *parse_cmd_create(struct strbuf *input, const char *next) { - struct strbuf ref = STRBUF_INIT; - struct strbuf newvalue = STRBUF_INIT; - struct ref_update *update; + char *refname; + unsigned char new_sha1[20]; - update = update_alloc(); - update->have_old = 1; + refname = parse_refname(input, &next); + if (!refname) + die("create: missing <ref>"); - if ((next = parse_first_arg(next, &ref)) != NULL && ref.buf[0]) - update_store_ref_name(update, ref.buf); - else - die("create line missing <ref>"); + if (parse_next_sha1(input, &next, new_sha1, "create", refname, 0)) + die("create %s: missing <newvalue>", refname); - if ((next = parse_next_arg(next, &newvalue)) != NULL) - update_store_new_sha1(update, newvalue.buf); - else - die("create %s missing <newvalue>", ref.buf); - if (is_null_sha1(update->new_sha1)) - die("create %s given zero new value", ref.buf); + if (is_null_sha1(new_sha1)) + die("create %s: zero <newvalue>", refname); + + if (*next != line_termination) + die("create %s: extra input: %s", refname, next); - if (next && *next) - die("create %s has extra input: %s", ref.buf, next); + ref_transaction_create(transaction, refname, new_sha1, update_flags); + + update_flags = 0; + free(refname); + + return next; } -static void parse_cmd_delete(const char *next) +static const char *parse_cmd_delete(struct strbuf *input, const char *next) { - struct strbuf ref = STRBUF_INIT; - struct strbuf oldvalue = STRBUF_INIT; - struct ref_update *update; + char *refname; + unsigned char old_sha1[20]; + int have_old; - update = update_alloc(); + refname = parse_refname(input, &next); + if (!refname) + die("delete: missing <ref>"); - if ((next = parse_first_arg(next, &ref)) != NULL && ref.buf[0]) - update_store_ref_name(update, ref.buf); - else - die("delete line missing <ref>"); + if (parse_next_sha1(input, &next, old_sha1, "delete", refname, + PARSE_SHA1_OLD)) { + have_old = 0; + } else { + if (is_null_sha1(old_sha1)) + die("delete %s: zero <oldvalue>", refname); + have_old = 1; + } + + if (*next != line_termination) + die("delete %s: extra input: %s", refname, next); - if ((next = parse_next_arg(next, &oldvalue)) != NULL) - update_store_old_sha1(update, oldvalue.buf); - else if(!line_termination) - die("delete %s missing [<oldvalue>] NUL", ref.buf); - if (update->have_old && is_null_sha1(update->old_sha1)) - die("delete %s given zero old value", ref.buf); + ref_transaction_delete(transaction, refname, old_sha1, + update_flags, have_old); - if (next && *next) - die("delete %s has extra input: %s", ref.buf, next); + update_flags = 0; + free(refname); + + return next; } -static void parse_cmd_verify(const char *next) +static const char *parse_cmd_verify(struct strbuf *input, const char *next) { - struct strbuf ref = STRBUF_INIT; - struct strbuf value = STRBUF_INIT; - struct ref_update *update; + char *refname; + unsigned char new_sha1[20]; + unsigned char old_sha1[20]; + int have_old; + + refname = parse_refname(input, &next); + if (!refname) + die("verify: missing <ref>"); + + if (parse_next_sha1(input, &next, old_sha1, "verify", refname, + PARSE_SHA1_OLD)) { + hashclr(new_sha1); + have_old = 0; + } else { + hashcpy(new_sha1, old_sha1); + have_old = 1; + } - update = update_alloc(); + if (*next != line_termination) + die("verify %s: extra input: %s", refname, next); - if ((next = parse_first_arg(next, &ref)) != NULL && ref.buf[0]) - update_store_ref_name(update, ref.buf); - else - die("verify line missing <ref>"); + ref_transaction_update(transaction, refname, new_sha1, old_sha1, + update_flags, have_old); - if ((next = parse_next_arg(next, &value)) != NULL) { - update_store_old_sha1(update, value.buf); - update_store_new_sha1(update, value.buf); - } else if(!line_termination) - die("verify %s missing [<oldvalue>] NUL", ref.buf); + update_flags = 0; + free(refname); - if (next && *next) - die("verify %s has extra input: %s", ref.buf, next); + return next; } -static void parse_cmd_option(const char *next) +static const char *parse_cmd_option(struct strbuf *input, const char *next) { - if (!strcmp(next, "no-deref")) + if (!strncmp(next, "no-deref", 8) && next[8] == line_termination) update_flags |= REF_NODEREF; else die("option unknown: %s", next); + return next + 8; } static void update_refs_stdin(void) { - struct strbuf cmd = STRBUF_INIT; + struct strbuf input = STRBUF_INIT; + const char *next; + if (strbuf_read(&input, 0, 1000) < 0) + die_errno("could not read from stdin"); + next = input.buf; /* Read each line dispatch its command */ - while (strbuf_getline(&cmd, stdin, line_termination) != EOF) - if (!cmd.buf[0]) + while (next < input.buf + input.len) { + if (*next == line_termination) die("empty command in input"); - else if (isspace(*cmd.buf)) - die("whitespace before command: %s", cmd.buf); - else if (starts_with(cmd.buf, "update ")) - parse_cmd_update(cmd.buf + 7); - else if (starts_with(cmd.buf, "create ")) - parse_cmd_create(cmd.buf + 7); - else if (starts_with(cmd.buf, "delete ")) - parse_cmd_delete(cmd.buf + 7); - else if (starts_with(cmd.buf, "verify ")) - parse_cmd_verify(cmd.buf + 7); - else if (starts_with(cmd.buf, "option ")) - parse_cmd_option(cmd.buf + 7); + else if (isspace(*next)) + die("whitespace before command: %s", next); + else if (starts_with(next, "update ")) + next = parse_cmd_update(&input, next + 7); + else if (starts_with(next, "create ")) + next = parse_cmd_create(&input, next + 7); + else if (starts_with(next, "delete ")) + next = parse_cmd_delete(&input, next + 7); + else if (starts_with(next, "verify ")) + next = parse_cmd_verify(&input, next + 7); + else if (starts_with(next, "option ")) + next = parse_cmd_option(&input, next + 7); else - die("unknown command: %s", cmd.buf); + die("unknown command: %s", next); + + next++; + } - strbuf_release(&cmd); + strbuf_release(&input); } int cmd_update_ref(int argc, const char **argv, const char *prefix) @@ -268,12 +359,17 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix) die("Refusing to perform update with empty message."); if (read_stdin) { + int ret; + transaction = ref_transaction_begin(); + if (delete || no_deref || argc > 0) usage_with_options(git_update_ref_usage, options); if (end_null) line_termination = '\0'; update_refs_stdin(); - return update_refs(msg, updates, updates_count, DIE_ON_ERR); + ret = ref_transaction_commit(transaction, msg, + UPDATE_REFS_DIE_ON_ERR); + return ret; } if (end_null) @@ -305,5 +401,5 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix) return delete_ref(refname, oldval ? oldsha1 : NULL, flags); else return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL, - flags, DIE_ON_ERR); + flags, UPDATE_REFS_DIE_ON_ERR); } diff --git a/contrib/examples/builtin-fetch--tool.c b/contrib/examples/builtin-fetch--tool.c index 8bc8c7533a..ee1916641e 100644 --- a/contrib/examples/builtin-fetch--tool.c +++ b/contrib/examples/builtin-fetch--tool.c @@ -31,7 +31,8 @@ static int update_ref_env(const char *action, rla = "(reflog update)"; if (snprintf(msg, sizeof(msg), "%s: %s", rla, action) >= sizeof(msg)) warning("reflog message too long: %.*s...", 50, msg); - return update_ref(msg, refname, sha1, oldval, 0, QUIET_ON_ERR); + return update_ref(msg, refname, sha1, oldval, 0, + UPDATE_REFS_QUIET_ON_ERR); } static int update_local_ref(const char *name, diff --git a/notes-cache.c b/notes-cache.c index eabe4a0d9b..97dfd63c9b 100644 --- a/notes-cache.c +++ b/notes-cache.c @@ -62,7 +62,7 @@ int notes_cache_write(struct notes_cache *c) if (commit_tree(&msg, tree_sha1, NULL, commit_sha1, NULL, NULL) < 0) return -1; if (update_ref("update notes cache", c->tree.ref, commit_sha1, NULL, - 0, QUIET_ON_ERR) < 0) + 0, UPDATE_REFS_QUIET_ON_ERR) < 0) return -1; return 0; diff --git a/notes-utils.c b/notes-utils.c index 4aa7023903..a0b1d7be98 100644 --- a/notes-utils.c +++ b/notes-utils.c @@ -48,7 +48,8 @@ void commit_notes(struct notes_tree *t, const char *msg) create_notes_commit(t, NULL, &buf, commit_sha1); strbuf_insert(&buf, 0, "notes: ", 7); /* commit message starts at index 7 */ - update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR); + update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, + UPDATE_REFS_DIE_ON_ERR); strbuf_release(&buf); } @@ -3243,9 +3243,9 @@ static struct ref_lock *update_ref_lock(const char *refname, if (!lock) { const char *str = "Cannot lock the ref '%s'."; switch (onerr) { - case MSG_ON_ERR: error(str, refname); break; - case DIE_ON_ERR: die(str, refname); break; - case QUIET_ON_ERR: break; + case UPDATE_REFS_MSG_ON_ERR: error(str, refname); break; + case UPDATE_REFS_DIE_ON_ERR: die(str, refname); break; + case UPDATE_REFS_QUIET_ON_ERR: break; } } return lock; @@ -3258,15 +3258,118 @@ static int update_ref_write(const char *action, const char *refname, if (write_ref_sha1(lock, sha1, action) < 0) { const char *str = "Cannot update the ref '%s'."; switch (onerr) { - case MSG_ON_ERR: error(str, refname); break; - case DIE_ON_ERR: die(str, refname); break; - case QUIET_ON_ERR: break; + case UPDATE_REFS_MSG_ON_ERR: error(str, refname); break; + case UPDATE_REFS_DIE_ON_ERR: die(str, refname); break; + case UPDATE_REFS_QUIET_ON_ERR: break; } return 1; } return 0; } +/** + * Information needed for a single ref update. Set new_sha1 to the + * new value or to zero to delete the ref. To check the old value + * while locking the ref, set have_old to 1 and set old_sha1 to the + * value or to zero to ensure the ref does not exist before update. + */ +struct ref_update { + unsigned char new_sha1[20]; + unsigned char old_sha1[20]; + int flags; /* REF_NODEREF? */ + int have_old; /* 1 if old_sha1 is valid, 0 otherwise */ + struct ref_lock *lock; + int type; + const char refname[FLEX_ARRAY]; +}; + +/* + * Data structure for holding a reference transaction, which can + * consist of checks and updates to multiple references, carried out + * as atomically as possible. This structure is opaque to callers. + */ +struct ref_transaction { + struct ref_update **updates; + size_t alloc; + size_t nr; +}; + +struct ref_transaction *ref_transaction_begin(void) +{ + return xcalloc(1, sizeof(struct ref_transaction)); +} + +static void ref_transaction_free(struct ref_transaction *transaction) +{ + int i; + + for (i = 0; i < transaction->nr; i++) + free(transaction->updates[i]); + + free(transaction->updates); + free(transaction); +} + +void ref_transaction_rollback(struct ref_transaction *transaction) +{ + ref_transaction_free(transaction); +} + +static struct ref_update *add_update(struct ref_transaction *transaction, + const char *refname) +{ + size_t len = strlen(refname); + struct ref_update *update = xcalloc(1, sizeof(*update) + len + 1); + + strcpy((char *)update->refname, refname); + ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); + transaction->updates[transaction->nr++] = update; + return update; +} + +void ref_transaction_update(struct ref_transaction *transaction, + const char *refname, + unsigned char *new_sha1, unsigned char *old_sha1, + int flags, int have_old) +{ + struct ref_update *update = add_update(transaction, refname); + + hashcpy(update->new_sha1, new_sha1); + update->flags = flags; + update->have_old = have_old; + if (have_old) + hashcpy(update->old_sha1, old_sha1); +} + +void ref_transaction_create(struct ref_transaction *transaction, + const char *refname, + unsigned char *new_sha1, + int flags) +{ + struct ref_update *update = add_update(transaction, refname); + + assert(!is_null_sha1(new_sha1)); + hashcpy(update->new_sha1, new_sha1); + hashclr(update->old_sha1); + update->flags = flags; + update->have_old = 1; +} + +void ref_transaction_delete(struct ref_transaction *transaction, + const char *refname, + unsigned char *old_sha1, + int flags, int have_old) +{ + struct ref_update *update = add_update(transaction, refname); + + update->flags = flags; + update->have_old = have_old; + if (have_old) { + assert(!is_null_sha1(old_sha1)); + hashcpy(update->old_sha1, old_sha1); + } +} + int update_ref(const char *action, const char *refname, const unsigned char *sha1, const unsigned char *oldval, int flags, enum action_on_err onerr) @@ -3282,7 +3385,7 @@ static int ref_update_compare(const void *r1, const void *r2) { const struct ref_update * const *u1 = r1; const struct ref_update * const *u2 = r2; - return strcmp((*u1)->ref_name, (*u2)->ref_name); + return strcmp((*u1)->refname, (*u2)->refname); } static int ref_update_reject_duplicates(struct ref_update **updates, int n, @@ -3290,15 +3393,15 @@ static int ref_update_reject_duplicates(struct ref_update **updates, int n, { int i; for (i = 1; i < n; i++) - if (!strcmp(updates[i - 1]->ref_name, updates[i]->ref_name)) { + if (!strcmp(updates[i - 1]->refname, updates[i]->refname)) { const char *str = "Multiple updates for ref '%s' not allowed."; switch (onerr) { - case MSG_ON_ERR: - error(str, updates[i]->ref_name); break; - case DIE_ON_ERR: - die(str, updates[i]->ref_name); break; - case QUIET_ON_ERR: + case UPDATE_REFS_MSG_ON_ERR: + error(str, updates[i]->refname); break; + case UPDATE_REFS_DIE_ON_ERR: + die(str, updates[i]->refname); break; + case UPDATE_REFS_QUIET_ON_ERR: break; } return 1; @@ -3306,26 +3409,21 @@ static int ref_update_reject_duplicates(struct ref_update **updates, int n, return 0; } -int update_refs(const char *action, const struct ref_update **updates_orig, - int n, enum action_on_err onerr) +int ref_transaction_commit(struct ref_transaction *transaction, + const char *msg, enum action_on_err onerr) { int ret = 0, delnum = 0, i; - struct ref_update **updates; - int *types; - struct ref_lock **locks; const char **delnames; + int n = transaction->nr; + struct ref_update **updates = transaction->updates; - if (!updates_orig || !n) + if (!n) return 0; /* Allocate work space */ - updates = xmalloc(sizeof(*updates) * n); - types = xmalloc(sizeof(*types) * n); - locks = xcalloc(n, sizeof(*locks)); delnames = xmalloc(sizeof(*delnames) * n); /* Copy, sort, and reject duplicate refs */ - memcpy(updates, updates_orig, sizeof(*updates) * n); qsort(updates, n, sizeof(*updates), ref_update_compare); ret = ref_update_reject_duplicates(updates, n, onerr); if (ret) @@ -3333,35 +3431,44 @@ int update_refs(const char *action, const struct ref_update **updates_orig, /* Acquire all locks while verifying old values */ for (i = 0; i < n; i++) { - locks[i] = update_ref_lock(updates[i]->ref_name, - (updates[i]->have_old ? - updates[i]->old_sha1 : NULL), - updates[i]->flags, - &types[i], onerr); - if (!locks[i]) { + struct ref_update *update = updates[i]; + + update->lock = update_ref_lock(update->refname, + (update->have_old ? + update->old_sha1 : NULL), + update->flags, + &update->type, onerr); + if (!update->lock) { ret = 1; goto cleanup; } } /* Perform updates first so live commits remain referenced */ - for (i = 0; i < n; i++) - if (!is_null_sha1(updates[i]->new_sha1)) { - ret = update_ref_write(action, - updates[i]->ref_name, - updates[i]->new_sha1, - locks[i], onerr); - locks[i] = NULL; /* freed by update_ref_write */ + for (i = 0; i < n; i++) { + struct ref_update *update = updates[i]; + + if (!is_null_sha1(update->new_sha1)) { + ret = update_ref_write(msg, + update->refname, + update->new_sha1, + update->lock, onerr); + update->lock = NULL; /* freed by update_ref_write */ if (ret) goto cleanup; } + } /* Perform deletes now that updates are safely completed */ - for (i = 0; i < n; i++) - if (locks[i]) { - delnames[delnum++] = locks[i]->ref_name; - ret |= delete_ref_loose(locks[i], types[i]); + for (i = 0; i < n; i++) { + struct ref_update *update = updates[i]; + + if (update->lock) { + delnames[delnum++] = update->lock->ref_name; + ret |= delete_ref_loose(update->lock, update->type); } + } + ret |= repack_without_refs(delnames, delnum); for (i = 0; i < delnum; i++) unlink_or_warn(git_path("logs/%s", delnames[i])); @@ -3369,12 +3476,10 @@ int update_refs(const char *action, const struct ref_update **updates_orig, cleanup: for (i = 0; i < n; i++) - if (locks[i]) - unlock_ref(locks[i]); - free(updates); - free(types); - free(locks); + if (updates[i]->lock) + unlock_ref(updates[i]->lock); free(delnames); + ref_transaction_free(transaction); return ret; } @@ -10,19 +10,7 @@ struct ref_lock { int force_write; }; -/** - * Information needed for a single ref update. Set new_sha1 to the - * new value or to zero to delete the ref. To check the old value - * while locking the ref, set have_old to 1 and set old_sha1 to the - * value or to zero to ensure the ref does not exist before update. - */ -struct ref_update { - const char *ref_name; - unsigned char new_sha1[20]; - unsigned char old_sha1[20]; - int flags; /* REF_NODEREF? */ - int have_old; /* 1 if old_sha1 is valid, 0 otherwise */ -}; +struct ref_transaction; /* * Bit values set in the flags argument passed to each_ref_fn(): @@ -166,7 +154,7 @@ extern void unlock_ref(struct ref_lock *lock); extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg); /** Setup reflog before using. **/ -int log_ref_setup(const char *ref_name, char *logfile, int bufsize); +int log_ref_setup(const char *refname, char *logfile, int bufsize); /** Reads log for the value of ref during at_time. **/ extern int read_ref_at(const char *refname, unsigned long at_time, int cnt, @@ -214,18 +202,80 @@ extern int rename_ref(const char *oldref, const char *newref, const char *logmsg */ extern int resolve_gitlink_ref(const char *path, const char *refname, unsigned char *sha1); -/** lock a ref and then write its file */ -enum action_on_err { MSG_ON_ERR, DIE_ON_ERR, QUIET_ON_ERR }; +enum action_on_err { + UPDATE_REFS_MSG_ON_ERR, + UPDATE_REFS_DIE_ON_ERR, + UPDATE_REFS_QUIET_ON_ERR +}; + +/* + * Begin a reference transaction. The reference transaction must + * eventually be commited using ref_transaction_commit() or rolled + * back using ref_transaction_rollback(). + */ +struct ref_transaction *ref_transaction_begin(void); + +/* + * Roll back a ref_transaction and free all associated data. + */ +void ref_transaction_rollback(struct ref_transaction *transaction); + + +/* + * The following functions add a reference check or update to a + * ref_transaction. In all of them, refname is the name of the + * reference to be affected. The functions make internal copies of + * refname, so the caller retains ownership of the parameter. flags + * can be REF_NODEREF; it is passed to update_ref_lock(). + */ + + +/* + * Add a reference update to transaction. new_sha1 is the value that + * the reference should have after the update, or zeros if it should + * be deleted. If have_old is true, then old_sha1 holds the value + * that the reference should have had before the update, or zeros if + * it must not have existed beforehand. + */ +void ref_transaction_update(struct ref_transaction *transaction, + const char *refname, + unsigned char *new_sha1, unsigned char *old_sha1, + int flags, int have_old); + +/* + * Add a reference creation to transaction. new_sha1 is the value + * that the reference should have after the update; it must not be the + * null SHA-1. It is verified that the reference does not exist + * already. + */ +void ref_transaction_create(struct ref_transaction *transaction, + const char *refname, + unsigned char *new_sha1, + int flags); + +/* + * Add a reference deletion to transaction. If have_old is true, then + * old_sha1 holds the value that the reference should have had before + * the update (which must not be the null SHA-1). + */ +void ref_transaction_delete(struct ref_transaction *transaction, + const char *refname, + unsigned char *old_sha1, + int flags, int have_old); + +/* + * Commit all of the changes that have been queued in transaction, as + * atomically as possible. Return a nonzero value if there is a + * problem. The ref_transaction is freed by this function. + */ +int ref_transaction_commit(struct ref_transaction *transaction, + const char *msg, enum action_on_err onerr); + +/** Lock a ref and then write its file */ int update_ref(const char *action, const char *refname, const unsigned char *sha1, const unsigned char *oldval, int flags, enum action_on_err onerr); -/** - * Lock all refs and then perform all modifications. - */ -int update_refs(const char *action, const struct ref_update **updates, - int n, enum action_on_err onerr); - extern int parse_hide_refs_config(const char *var, const char *value, const char *); extern int ref_is_hidden(const char *); diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh index e130c528fe..4e2459afc5 100755 --- a/t/t1400-update-ref.sh +++ b/t/t1400-update-ref.sh @@ -350,22 +350,28 @@ test_expect_success 'stdin fails on unknown command' ' grep "fatal: unknown command: unknown $a" err ' -test_expect_success 'stdin fails on badly quoted input' ' +test_expect_success 'stdin fails on unbalanced quotes' ' echo "create $a \"master" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && grep "fatal: badly quoted argument: \\\"master" err ' -test_expect_success 'stdin fails on arguments not separated by space' ' +test_expect_success 'stdin fails on invalid escape' ' + echo "create $a \"ma\zter\"" >stdin && + test_must_fail git update-ref --stdin <stdin 2>err && + grep "fatal: badly quoted argument: \\\"ma\\\\zter\\\"" err +' + +test_expect_success 'stdin fails on junk after quoted argument' ' echo "create \"$a\"master" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: expected SP but got: master" err + grep "fatal: unexpected character after quoted argument: \\\"$a\\\"master" err ' test_expect_success 'stdin fails create with no ref' ' echo "create " >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: create line missing <ref>" err + grep "fatal: create: missing <ref>" err ' test_expect_success 'stdin fails create with bad ref name' ' @@ -377,19 +383,19 @@ test_expect_success 'stdin fails create with bad ref name' ' test_expect_success 'stdin fails create with no new value' ' echo "create $a" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: create $a missing <newvalue>" err + grep "fatal: create $a: missing <newvalue>" err ' test_expect_success 'stdin fails create with too many arguments' ' echo "create $a $m $m" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: create $a has extra input: $m" err + grep "fatal: create $a: extra input: $m" err ' test_expect_success 'stdin fails update with no ref' ' echo "update " >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: update line missing <ref>" err + grep "fatal: update: missing <ref>" err ' test_expect_success 'stdin fails update with bad ref name' ' @@ -401,19 +407,19 @@ test_expect_success 'stdin fails update with bad ref name' ' test_expect_success 'stdin fails update with no new value' ' echo "update $a" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: update $a missing <newvalue>" err + grep "fatal: update $a: missing <newvalue>" err ' test_expect_success 'stdin fails update with too many arguments' ' echo "update $a $m $m $m" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: update $a has extra input: $m" err + grep "fatal: update $a: extra input: $m" err ' test_expect_success 'stdin fails delete with no ref' ' echo "delete " >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: delete line missing <ref>" err + grep "fatal: delete: missing <ref>" err ' test_expect_success 'stdin fails delete with bad ref name' ' @@ -425,13 +431,13 @@ test_expect_success 'stdin fails delete with bad ref name' ' test_expect_success 'stdin fails delete with too many arguments' ' echo "delete $a $m $m" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: delete $a has extra input: $m" err + grep "fatal: delete $a: extra input: $m" err ' test_expect_success 'stdin fails verify with too many arguments' ' echo "verify $a $m $m" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: verify $a has extra input: $m" err + grep "fatal: verify $a: extra input: $m" err ' test_expect_success 'stdin fails option with unknown name' ' @@ -458,6 +464,24 @@ test_expect_success 'stdin create ref works' ' test_cmp expect actual ' +test_expect_success 'stdin succeeds with quoted argument' ' + git update-ref -d $a && + echo "create $a \"$m\"" >stdin && + git update-ref --stdin <stdin && + git rev-parse $m >expect && + git rev-parse $a >actual && + test_cmp expect actual +' + +test_expect_success 'stdin succeeds with escaped character' ' + git update-ref -d $a && + echo "create $a \"ma\\163ter\"" >stdin && + git update-ref --stdin <stdin && + git rev-parse $m >expect && + git rev-parse $a >actual && + test_cmp expect actual +' + test_expect_success 'stdin update ref creates with zero old value' ' echo "update $b $m $Z" >stdin && git update-ref --stdin <stdin && @@ -494,21 +518,21 @@ test_expect_success 'stdin update ref fails with wrong old value' ' test_expect_success 'stdin update ref fails with bad old value' ' echo "update $c $m does-not-exist" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: invalid old value for ref $c: does-not-exist" err && + grep "fatal: update $c: invalid <oldvalue>: does-not-exist" err && test_must_fail git rev-parse --verify -q $c ' test_expect_success 'stdin create ref fails with bad new value' ' echo "create $c does-not-exist" >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: invalid new value for ref $c: does-not-exist" err && + grep "fatal: create $c: invalid <newvalue>: does-not-exist" err && test_must_fail git rev-parse --verify -q $c ' test_expect_success 'stdin create ref fails with zero new value' ' echo "create $c " >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: create $c given zero new value" err && + grep "fatal: create $c: zero <newvalue>" err && test_must_fail git rev-parse --verify -q $c ' @@ -532,7 +556,7 @@ test_expect_success 'stdin delete ref fails with wrong old value' ' test_expect_success 'stdin delete ref fails with zero old value' ' echo "delete $a " >stdin && test_must_fail git update-ref --stdin <stdin 2>err && - grep "fatal: delete $a given zero old value" err && + grep "fatal: delete $a: zero <oldvalue>" err && git rev-parse $m >expect && git rev-parse $a >actual && test_cmp expect actual @@ -673,7 +697,7 @@ test_expect_success 'stdin -z fails on unknown command' ' test_expect_success 'stdin -z fails create with no ref' ' printf $F "create " >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: create line missing <ref>" err + grep "fatal: create: missing <ref>" err ' test_expect_success 'stdin -z fails create with bad ref name' ' @@ -685,7 +709,7 @@ test_expect_success 'stdin -z fails create with bad ref name' ' test_expect_success 'stdin -z fails create with no new value' ' printf $F "create $a" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: create $a missing <newvalue>" err + grep "fatal: create $a: unexpected end of input when reading <newvalue>" err ' test_expect_success 'stdin -z fails create with too many arguments' ' @@ -697,25 +721,39 @@ test_expect_success 'stdin -z fails create with too many arguments' ' test_expect_success 'stdin -z fails update with no ref' ' printf $F "update " >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: update line missing <ref>" err + grep "fatal: update: missing <ref>" err +' + +test_expect_success 'stdin -z fails update with too few args' ' + printf $F "update $a" "$m" >stdin && + test_must_fail git update-ref -z --stdin <stdin 2>err && + grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err ' test_expect_success 'stdin -z fails update with bad ref name' ' - printf $F "update ~a" "$m" >stdin && + printf $F "update ~a" "$m" "" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && grep "fatal: invalid ref format: ~a" err ' +test_expect_success 'stdin -z emits warning with empty new value' ' + git update-ref $a $m && + printf $F "update $a" "" "" >stdin && + git update-ref -z --stdin <stdin 2>err && + grep "warning: update $a: missing <newvalue>, treating as zero" err && + test_must_fail git rev-parse --verify -q $a +' + test_expect_success 'stdin -z fails update with no new value' ' printf $F "update $a" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: update $a missing <newvalue>" err + grep "fatal: update $a: unexpected end of input when reading <newvalue>" err ' test_expect_success 'stdin -z fails update with no old value' ' printf $F "update $a" "$m" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: update $a missing \\[<oldvalue>\\] NUL" err + grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err ' test_expect_success 'stdin -z fails update with too many arguments' ' @@ -727,7 +765,7 @@ test_expect_success 'stdin -z fails update with too many arguments' ' test_expect_success 'stdin -z fails delete with no ref' ' printf $F "delete " >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: delete line missing <ref>" err + grep "fatal: delete: missing <ref>" err ' test_expect_success 'stdin -z fails delete with bad ref name' ' @@ -739,7 +777,7 @@ test_expect_success 'stdin -z fails delete with bad ref name' ' test_expect_success 'stdin -z fails delete with no old value' ' printf $F "delete $a" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: delete $a missing \\[<oldvalue>\\] NUL" err + grep "fatal: delete $a: unexpected end of input when reading <oldvalue>" err ' test_expect_success 'stdin -z fails delete with too many arguments' ' @@ -757,7 +795,7 @@ test_expect_success 'stdin -z fails verify with too many arguments' ' test_expect_success 'stdin -z fails verify with no old value' ' printf $F "verify $a" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: verify $a missing \\[<oldvalue>\\] NUL" err + grep "fatal: verify $a: unexpected end of input when reading <oldvalue>" err ' test_expect_success 'stdin -z fails option with unknown name' ' @@ -816,7 +854,7 @@ test_expect_success 'stdin -z update ref fails with wrong old value' ' test_expect_success 'stdin -z update ref fails with bad old value' ' printf $F "update $c" "$m" "does-not-exist" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: invalid old value for ref $c: does-not-exist" err && + grep "fatal: update $c: invalid <oldvalue>: does-not-exist" err && test_must_fail git rev-parse --verify -q $c ' @@ -834,14 +872,14 @@ test_expect_success 'stdin -z create ref fails with bad new value' ' git update-ref -d "$c" && printf $F "create $c" "does-not-exist" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: invalid new value for ref $c: does-not-exist" err && + grep "fatal: create $c: invalid <newvalue>: does-not-exist" err && test_must_fail git rev-parse --verify -q $c ' -test_expect_success 'stdin -z create ref fails with zero new value' ' +test_expect_success 'stdin -z create ref fails with empty new value' ' printf $F "create $c" "" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: create $c given zero new value" err && + grep "fatal: create $c: missing <newvalue>" err && test_must_fail git rev-parse --verify -q $c ' @@ -865,7 +903,7 @@ test_expect_success 'stdin -z delete ref fails with wrong old value' ' test_expect_success 'stdin -z delete ref fails with zero old value' ' printf $F "delete $a" "$Z" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && - grep "fatal: delete $a given zero old value" err && + grep "fatal: delete $a: zero <oldvalue>" err && git rev-parse $m >expect && git rev-parse $a >actual && test_cmp expect actual @@ -923,7 +961,7 @@ test_expect_success 'stdin -z update refs works with identity updates' ' test_expect_success 'stdin -z update refs fails with wrong old value' ' git update-ref $c $m && - printf $F "update $a" "$m" "$m" "update $b" "$m" "$m" "update $c" "" "$Z" >stdin && + printf $F "update $a" "$m" "$m" "update $b" "$m" "$m" "update $c" "$m" "$Z" >stdin && test_must_fail git update-ref -z --stdin <stdin 2>err && grep "fatal: Cannot lock the ref '"'"'$c'"'"'" err && git rev-parse $m >expect && |