X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=read-tree.c;h=82e2a9a4d3663fad513f607e25fe84a8ccbf5460;hb=36f5b1f0c800a23b9755a0214c1c3250f34f2486;hp=1c3b09beffdf347af40b385f632d481c99645a33;hpb=3bcd59a546333ae355c87577ba63f8dccd50a519;p=git.git diff --git a/read-tree.c b/read-tree.c index 1c3b09be..82e2a9a4 100644 --- a/read-tree.c +++ b/read-tree.c @@ -12,6 +12,7 @@ #include #include +static int reset = 0; static int merge = 0; static int update = 0; static int index_only = 0; @@ -133,11 +134,9 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len, pathlen = strlen(first); ce_size = cache_entry_size(baselen + pathlen); - src = xmalloc(sizeof(struct cache_entry *) * src_size); - memset(src, 0, sizeof(struct cache_entry *) * src_size); + src = xcalloc(src_size, sizeof(struct cache_entry *)); - subposns = xmalloc(sizeof(struct tree_list_entry *) * len); - memset(subposns, 0, sizeof(struct tree_list_entry *) * len); + subposns = xcalloc(len, sizeof(struct tree_list_entry *)); if (cache_name && !strcmp(cache_name, first)) { any_files = 1; @@ -177,8 +176,7 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len, else ce_stage = 2; - ce = xmalloc(ce_size); - memset(ce, 0, ce_size); + ce = xcalloc(1, ce_size); ce->ce_mode = create_ce_mode(posns[i]->mode); ce->ce_flags = create_ce_flags(baselen + pathlen, ce_stage); @@ -273,10 +271,26 @@ static void unlink_entry(char *name) static void progress_interval(int signum) { - signal(SIGALRM, progress_interval); progress_update = 1; } +static void setup_progress_signal(void) +{ + struct sigaction sa; + struct itimerval v; + + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = progress_interval; + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_RESTART; + sigaction(SIGALRM, &sa, NULL); + + v.it_interval.tv_sec = 1; + v.it_interval.tv_usec = 0; + v.it_value = v.it_interval; + setitimer(ITIMER_REAL, &v, NULL); +} + static void check_updates(struct cache_entry **src, int nr) { static struct checkout state = { @@ -289,8 +303,6 @@ static void check_updates(struct cache_entry **src, int nr) unsigned last_percent = 200, cnt = 0, total = 0; if (update && verbose_update) { - struct itimerval v; - for (total = cnt = 0; cnt < nr; cnt++) { struct cache_entry *ce = src[cnt]; if (!ce->ce_mode || ce->ce_flags & mask) @@ -302,12 +314,8 @@ static void check_updates(struct cache_entry **src, int nr) total = 0; if (total) { - v.it_interval.tv_sec = 1; - v.it_interval.tv_usec = 0; - v.it_value = v.it_interval; - signal(SIGALRM, progress_interval); - setitimer(ITIMER_REAL, &v, NULL); fprintf(stderr, "Checking files out...\n"); + setup_progress_signal(); progress_update = 1; } cnt = 0; @@ -341,8 +349,8 @@ static void check_updates(struct cache_entry **src, int nr) } } if (total) { - fputc('\n', stderr); signal(SIGALRM, SIG_IGN); + fputc('\n', stderr); } } @@ -400,7 +408,7 @@ static void verify_uptodate(struct cache_entry *ce) { struct stat st; - if (index_only) + if (index_only || reset) return; if (!lstat(ce->name, &st)) { @@ -409,11 +417,30 @@ static void verify_uptodate(struct cache_entry *ce) return; errno = 0; } + if (reset) { + ce->ce_flags |= htons(CE_UPDATE); + return; + } if (errno == ENOENT) return; die("Entry '%s' not uptodate. Cannot merge.", ce->name); } +/* + * We do not want to remove or overwrite a working tree file that + * is not tracked. + */ +static void verify_absent(const char *path, const char *action) +{ + struct stat st; + + if (index_only || reset || !update) + return; + if (!lstat(path, &st)) + die("Untracked working tree file '%s' " + "would be %s by merge.", path, action); +} + static int merged_entry(struct cache_entry *merge, struct cache_entry *old) { merge->ce_flags |= htons(CE_UPDATE); @@ -431,6 +458,9 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old) verify_uptodate(old); } } + else + verify_absent(merge->name, "overwritten"); + merge->ce_flags &= ~htons(CE_STAGEMASK); add_cache_entry(merge, ADD_CACHE_OK_TO_ADD); return 1; @@ -440,6 +470,8 @@ static int deleted_entry(struct cache_entry *ce, struct cache_entry *old) { if (old) verify_uptodate(old); + else + verify_absent(ce->name, "removed"); ce->ce_mode = 0; add_cache_entry(ce, ADD_CACHE_OK_TO_ADD); return 1; @@ -475,6 +507,7 @@ static int threeway_merge(struct cache_entry **stages) int count; int head_match = 0; int remote_match = 0; + const char *path = NULL; int df_conflict_head = 0; int df_conflict_remote = 0; @@ -486,8 +519,11 @@ static int threeway_merge(struct cache_entry **stages) for (i = 1; i < head_idx; i++) { if (!stages[i]) any_anc_missing = 1; - else + else { + if (!path) + path = stages[i]->name; no_anc_exists = 0; + } } index = stages[0]; @@ -503,8 +539,15 @@ static int threeway_merge(struct cache_entry **stages) remote = NULL; } + if (!path && index) + path = index->name; + if (!path && head) + path = head->name; + if (!path && remote) + path = remote->name; + /* First, if there's a #16 situation, note that to prevent #13 - * and #14. + * and #14. */ if (!same(remote, head)) { for (i = 1; i < head_idx; i++) { @@ -563,6 +606,8 @@ static int threeway_merge(struct cache_entry **stages) (remote_deleted && head && head_match)) { if (index) return deleted_entry(index, index); + else if (path) + verify_absent(path, "removed"); return 0; } /* @@ -580,6 +625,8 @@ static int threeway_merge(struct cache_entry **stages) if (index) { verify_uptodate(index); } + else if (path) + verify_absent(path, "overwritten"); nontrivial_merge = 1; @@ -677,11 +724,17 @@ static int oneway_merge(struct cache_entry **src) merge_size); if (!a) - return 0; + return deleted_entry(old, old); if (old && same(old, a)) { + if (reset) { + struct stat st; + if (lstat(old->name, &st) || + ce_match_stat(old, &st, 1)) + old->ce_flags |= htons(CE_UPDATE); + } return keep_entry(old); } - return merged_entry(a, NULL); + return merged_entry(a, old); } static int read_cache_unmerged(void) @@ -712,11 +765,12 @@ static struct cache_file cache_file; int main(int argc, char **argv) { - int i, newfd, reset, stage = 0; + int i, newfd, stage = 0; unsigned char sha1[20]; merge_fn_t fn = NULL; setup_git_directory(); + git_config(git_default_config); newfd = hold_index_file_for_update(&cache_file, get_index_file()); if (newfd < 0) @@ -786,8 +840,8 @@ int main(int argc, char **argv) if (1 < index_only + update) usage(read_tree_usage); - if (get_sha1(arg, sha1) < 0) - usage(read_tree_usage); + if (get_sha1(arg, sha1)) + die("Not a valid object name %s", arg); if (list_tree(sha1) < 0) die("failed to unpack tree object %s", arg); stage++;