#include "tree-walk.h"
#include "cache-tree.h"
#include "unpack-trees.h"
+#include "progress.h"
+#include "refs.h"
#define DBRT_DEBUG 1
struct tree_entry_list {
struct tree_entry_list *next;
- unsigned directory : 1;
- unsigned executable : 1;
- unsigned symlink : 1;
unsigned int mode;
const char *name;
const unsigned char *sha1;
entry->name = one.path;
entry->sha1 = one.sha1;
entry->mode = one.mode;
- entry->directory = S_ISDIR(one.mode) != 0;
- entry->executable = (one.mode & S_IXUSR) != 0;
- entry->symlink = S_ISLNK(one.mode) != 0;
entry->next = NULL;
*list_p = entry;
#endif
if (!first || entcmp(first, firstdir,
posns[i]->name,
- posns[i]->directory) > 0) {
+ S_ISDIR(posns[i]->mode)) > 0) {
first = posns[i]->name;
- firstdir = posns[i]->directory;
+ firstdir = S_ISDIR(posns[i]->mode);
}
}
/* No name means we're done */
continue;
}
- if (posns[i]->directory) {
+ if (S_ISDIR(posns[i]->mode)) {
struct tree *tree = lookup_tree(posns[i]->sha1);
any_dirs = 1;
parse_tree(tree);
* directories, in case this unlink is the removal of the
* last entry in the directory -- empty directories are removed.
*/
-static void unlink_entry(char *name)
+static void unlink_entry(char *name, char *last_symlink)
{
char *cp, *prev;
+ if (has_symlink_leading_path(name, last_symlink))
+ return;
if (unlink(name))
return;
prev = NULL;
}
}
-static volatile sig_atomic_t progress_update;
-
-static void progress_interval(int signum)
-{
- 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 struct checkout state;
static void check_updates(struct cache_entry **src, int nr,
- struct unpack_trees_options *o)
+ struct unpack_trees_options *o)
{
unsigned short mask = htons(CE_UPDATE);
- unsigned last_percent = 200, cnt = 0, total = 0;
+ unsigned cnt = 0, total = 0;
+ struct progress progress;
+ char last_symlink[PATH_MAX];
if (o->update && o->verbose_update) {
for (total = cnt = 0; cnt < nr; cnt++) {
total++;
}
- /* Don't bother doing this for very small updates */
- if (total < 250)
- total = 0;
-
- if (total) {
- fprintf(stderr, "Checking files out...\n");
- setup_progress_signal();
- progress_update = 1;
- }
+ start_progress_delay(&progress, "Checking %u files out...",
+ "", total, 50, 2);
cnt = 0;
}
+ *last_symlink = '\0';
while (nr--) {
struct cache_entry *ce = *src++;
- if (total) {
- if (!ce->ce_mode || ce->ce_flags & mask) {
- unsigned percent;
- cnt++;
- percent = (cnt * 100) / total;
- if (percent != last_percent ||
- progress_update) {
- fprintf(stderr, "%4u%% (%u/%u) done\r",
- percent, cnt, total);
- last_percent = percent;
- progress_update = 0;
- }
- }
- }
+ if (total)
+ if (!ce->ce_mode || ce->ce_flags & mask)
+ display_progress(&progress, ++cnt);
if (!ce->ce_mode) {
if (o->update)
- unlink_entry(ce->name);
+ unlink_entry(ce->name, last_symlink);
continue;
}
if (ce->ce_flags & mask) {
ce->ce_flags &= ~mask;
- if (o->update)
+ if (o->update) {
checkout_entry(ce, &state, NULL);
+ *last_symlink = '\0';
+ }
}
}
- if (total) {
- signal(SIGALRM, SIG_IGN);
- fputc('\n', stderr);
- }
+ if (total)
+ stop_progress(&progress);;
}
int unpack_trees(struct object_list *trees, struct unpack_trees_options *o)
return;
errno = 0;
}
- if (o->reset) {
- ce->ce_flags |= htons(CE_UPDATE);
- return;
- }
if (errno == ENOENT)
return;
die("Entry '%s' not uptodate. Cannot merge.", ce->name);
cache_tree_invalidate_path(active_cache_tree, ce->name);
}
+/*
+ * Check that checking out ce->sha1 in subdir ce->name is not
+ * going to overwrite any working files.
+ *
+ * Currently, git does not checkout subprojects during a superproject
+ * checkout, so it is not going to overwrite anything.
+ */
+static int verify_clean_submodule(struct cache_entry *ce, const char *action,
+ struct unpack_trees_options *o)
+{
+ return 0;
+}
+
+static int verify_clean_subdirectory(struct cache_entry *ce, const char *action,
+ struct unpack_trees_options *o)
+{
+ /*
+ * we are about to extract "ce->name"; we would not want to lose
+ * anything in the existing directory there.
+ */
+ int namelen;
+ int pos, i;
+ struct dir_struct d;
+ char *pathbuf;
+ int cnt = 0;
+ unsigned char sha1[20];
+
+ if (S_ISGITLINK(ntohl(ce->ce_mode)) &&
+ resolve_gitlink_ref(ce->name, "HEAD", sha1) == 0) {
+ /* If we are not going to update the submodule, then
+ * we don't care.
+ */
+ if (!hashcmp(sha1, ce->sha1))
+ return 0;
+ return verify_clean_submodule(ce, action, o);
+ }
+
+ /*
+ * First let's make sure we do not have a local modification
+ * in that directory.
+ */
+ namelen = strlen(ce->name);
+ pos = cache_name_pos(ce->name, namelen);
+ if (0 <= pos)
+ return cnt; /* we have it as nondirectory */
+ pos = -pos - 1;
+ for (i = pos; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ int len = ce_namelen(ce);
+ if (len < namelen ||
+ strncmp(ce->name, ce->name, namelen) ||
+ ce->name[namelen] != '/')
+ break;
+ /*
+ * ce->name is an entry in the subdirectory.
+ */
+ if (!ce_stage(ce)) {
+ verify_uptodate(ce, o);
+ ce->ce_mode = 0;
+ }
+ cnt++;
+ }
+
+ /*
+ * Then we need to make sure that we do not lose a locally
+ * present file that is not ignored.
+ */
+ pathbuf = xmalloc(namelen + 2);
+ memcpy(pathbuf, ce->name, namelen);
+ strcpy(pathbuf+namelen, "/");
+
+ memset(&d, 0, sizeof(d));
+ if (o->dir)
+ d.exclude_per_dir = o->dir->exclude_per_dir;
+ i = read_directory(&d, ce->name, pathbuf, namelen+1, NULL);
+ if (i)
+ die("Updating '%s' would lose untracked files in it",
+ ce->name);
+ free(pathbuf);
+ return cnt;
+}
+
/*
* We do not want to remove or overwrite a working tree file that
* is not tracked, unless it is ignored.
*/
-static void verify_absent(const char *path, const char *action,
+static void verify_absent(struct cache_entry *ce, const char *action,
struct unpack_trees_options *o)
{
struct stat st;
if (o->index_only || o->reset || !o->update)
return;
- if (!lstat(path, &st) && !(o->dir && excluded(o->dir, path)))
+
+ if (has_symlink_leading_path(ce->name, NULL))
+ return;
+
+ if (!lstat(ce->name, &st)) {
+ int cnt;
+
+ if (o->dir && excluded(o->dir, ce->name))
+ /*
+ * ce->name is explicitly excluded, so it is Ok to
+ * overwrite it.
+ */
+ return;
+ if (S_ISDIR(st.st_mode)) {
+ /*
+ * We are checking out path "foo" and
+ * found "foo/." in the working tree.
+ * This is tricky -- if we have modified
+ * files that are in "foo/" we would lose
+ * it.
+ */
+ cnt = verify_clean_subdirectory(ce, action, o);
+
+ /*
+ * If this removed entries from the index,
+ * what that means is:
+ *
+ * (1) the caller unpack_trees_rec() saw path/foo
+ * in the index, and it has not removed it because
+ * it thinks it is handling 'path' as blob with
+ * D/F conflict;
+ * (2) we will return "ok, we placed a merged entry
+ * in the index" which would cause o->pos to be
+ * incremented by one;
+ * (3) however, original o->pos now has 'path/foo'
+ * marked with "to be removed".
+ *
+ * We need to increment it by the number of
+ * deleted entries here.
+ */
+ o->pos += cnt;
+ return;
+ }
+
+ /*
+ * The previous round may already have decided to
+ * delete this path, which is in a subdirectory that
+ * is being replaced with a blob.
+ */
+ cnt = cache_name_pos(ce->name, strlen(ce->name));
+ if (0 <= cnt) {
+ struct cache_entry *ce = active_cache[cnt];
+ if (!ce_stage(ce) && !ce->ce_mode)
+ return;
+ }
+
die("Untracked working tree file '%s' "
- "would be %s by merge.", path, action);
+ "would be %s by merge.", ce->name, action);
+ }
}
static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
}
}
else {
- verify_absent(merge->name, "overwritten", o);
+ verify_absent(merge, "overwritten", o);
invalidate_ce_path(merge);
}
if (old)
verify_uptodate(old, o);
else
- verify_absent(ce->name, "removed", o);
+ verify_absent(ce, "removed", o);
ce->ce_mode = 0;
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
invalidate_ce_path(ce);
int count;
int head_match = 0;
int remote_match = 0;
- const char *path = NULL;
int df_conflict_head = 0;
int df_conflict_remote = 0;
int i;
for (i = 1; i < o->head_idx; i++) {
- if (!stages[i])
+ if (!stages[i] || stages[i] == o->df_conflict_entry)
any_anc_missing = 1;
- else {
- if (!path)
- path = stages[i]->name;
+ else
no_anc_exists = 0;
- }
}
index = stages[0];
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.
*/
if (o->aggressive) {
int head_deleted = !head && !df_conflict_head;
int remote_deleted = !remote && !df_conflict_remote;
+ struct cache_entry *ce = NULL;
+
+ if (index)
+ ce = index;
+ else if (head)
+ ce = head;
+ else if (remote)
+ ce = remote;
+ else {
+ for (i = 1; i < o->head_idx; i++) {
+ if (stages[i] && stages[i] != o->df_conflict_entry) {
+ ce = stages[i];
+ break;
+ }
+ }
+ }
+
/*
* Deleted in both.
* Deleted in one and unchanged in the other.
(remote_deleted && head && head_match)) {
if (index)
return deleted_entry(index, index, o);
- else if (path && !head_deleted)
- verify_absent(path, "removed", o);
+ else if (ce && !head_deleted)
+ verify_absent(ce, "removed", o);
return 0;
}
/*
o->nontrivial_merge = 1;
- /* #2, #3, #4, #6, #7, #9, #11. */
+ /* #2, #3, #4, #6, #7, #9, #10, #11. */
count = 0;
if (!head_match || !remote_match) {
for (i = 1; i < o->head_idx; i++) {
- if (stages[i]) {
+ if (stages[i] && stages[i] != o->df_conflict_entry) {
keep_entry(stages[i], o);
count++;
break;