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merge-recursive: Fix code checking for D/F conflicts still being present

Previously, we were using lstat() to determine if a directory was still
present after a merge (and thus in the way of adding a file).  We should
have been using lstat() only to determine if untracked directories were in
the way (and then only when necessary to check for untracked directories);
we should instead using the index to determine if there is a tracked
directory in the way.  Create a new function to do this and use it to
replace the existing checks for directories being in the way.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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commit f2507b4e0ef0b7fc8c1e75004e8a86a0430dc512 1 parent f0fd4d0
@newren newren authored gitster committed
Showing with 34 additions and 15 deletions.
  1. +34 −15 merge-recursive.c
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49 merge-recursive.c
@@ -591,6 +591,30 @@ static void flush_buffer(int fd, const char *buf, unsigned long size)
}
}
+static int dir_in_way(const char *path, int check_working_copy)
+{
+ int pos, pathlen = strlen(path);
+ char *dirpath = xmalloc(pathlen + 2);
+ struct stat st;
+
+ strcpy(dirpath, path);
+ dirpath[pathlen] = '/';
+ dirpath[pathlen+1] = '\0';
+
+ pos = cache_name_pos(dirpath, pathlen+1);
+
+ if (pos < 0)
+ pos = -1 - pos;
+ if (pos < active_nr &&
+ !strncmp(dirpath, active_cache[pos]->name, pathlen+1)) {
+ free(dirpath);
+ return 1;
+ }
+
+ free(dirpath);
+ return check_working_copy && !lstat(path, &st) && S_ISDIR(st.st_mode);
+}
+
static int would_lose_untracked(const char *path)
{
int pos = cache_name_pos(path, strlen(path));
@@ -880,7 +904,6 @@ static void conflict_rename_delete(struct merge_options *o,
{
char *dest_name = pair->two->path;
int df_conflict = 0;
- struct stat st;
output(o, 1, "CONFLICT (rename/delete): Rename %s->%s in %s "
"and deleted in %s",
@@ -890,7 +913,7 @@ static void conflict_rename_delete(struct merge_options *o,
update_stages(dest_name, NULL,
rename_branch == o->branch1 ? pair->two : NULL,
rename_branch == o->branch1 ? NULL : pair->two);
- if (lstat(dest_name, &st) == 0 && S_ISDIR(st.st_mode)) {
+ if (dir_in_way(dest_name, !o->call_depth)) {
dest_name = unique_path(o, dest_name, rename_branch);
df_conflict = 1;
}
@@ -912,13 +935,12 @@ static void conflict_rename_rename_1to2(struct merge_options *o,
const char *ren2_dst = pair2->two->path;
const char *dst_name1 = ren1_dst;
const char *dst_name2 = ren2_dst;
- struct stat st;
- if (lstat(ren1_dst, &st) == 0 && S_ISDIR(st.st_mode)) {
+ if (dir_in_way(ren1_dst, !o->call_depth)) {
dst_name1 = del[delp++] = unique_path(o, ren1_dst, branch1);
output(o, 1, "%s is a directory in %s adding as %s instead",
ren1_dst, branch2, dst_name1);
}
- if (lstat(ren2_dst, &st) == 0 && S_ISDIR(st.st_mode)) {
+ if (dir_in_way(ren2_dst, !o->call_depth)) {
dst_name2 = del[delp++] = unique_path(o, ren2_dst, branch2);
output(o, 1, "%s is a directory in %s adding as %s instead",
ren2_dst, branch1, dst_name2);
@@ -1078,7 +1100,7 @@ static int process_renames(struct merge_options *o,
try_merge = 0;
if (sha_eq(src_other.sha1, null_sha1)) {
- if (string_list_has_string(&o->current_directory_set, ren1_dst)) {
+ if (dir_in_way(ren1_dst, 0 /*check_wc*/)) {
ren1->dst_entry->processed = 0;
setup_rename_df_conflict_info(RENAME_DELETE,
ren1->pair,
@@ -1157,7 +1179,7 @@ static int process_renames(struct merge_options *o,
a = &src_other;
}
update_stages_and_entry(ren1_dst, ren1->dst_entry, one, a, b, 1);
- if (string_list_has_string(&o->current_directory_set, ren1_dst)) {
+ if (dir_in_way(ren1_dst, 0 /*check_wc*/)) {
setup_rename_df_conflict_info(RENAME_NORMAL,
ren1->pair,
NULL,
@@ -1262,7 +1284,6 @@ static int merge_content(struct merge_options *o,
const char *reason = "content";
struct merge_file_info mfi;
struct diff_filespec one, a, b;
- struct stat st;
unsigned df_conflict_remains = 0;
if (!o_sha) {
@@ -1279,7 +1300,7 @@ static int merge_content(struct merge_options *o,
mfi = merge_file(o, &one, &a, &b, o->branch1, o->branch2);
if (df_rename_conflict_branch &&
- lstat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+ dir_in_way(path, !o->call_depth)) {
df_conflict_remains = 1;
}
@@ -1344,8 +1365,7 @@ static int process_entry(struct merge_options *o,
output(o, 2, "Removing %s", path);
/* do not touch working file if it did not exist */
remove_file(o, 1, path, !a_sha);
- } else if (string_list_has_string(&o->current_directory_set,
- path)) {
+ } else if (dir_in_way(path, 0 /*check_wc*/)) {
entry->processed = 0;
return 1; /* Assume clean until processed */
} else {
@@ -1368,7 +1388,7 @@ static int process_entry(struct merge_options *o,
mode = b_mode;
sha = b_sha;
}
- if (string_list_has_string(&o->current_directory_set, path)) {
+ if (dir_in_way(path, 0 /*check_wc*/)) {
/* Handle D->F conflicts after all subfiles */
entry->processed = 0;
return 1; /* Assume clean until processed */
@@ -1416,7 +1436,6 @@ static int process_df_entry(struct merge_options *o,
unsigned char *o_sha = stage_sha(entry->stages[1].sha, o_mode);
unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
- struct stat st;
entry->processed = 1;
if (entry->rename_df_conflict_info) {
@@ -1461,7 +1480,7 @@ static int process_df_entry(struct merge_options *o,
} else if (o_sha && (!a_sha || !b_sha)) {
/* Modify/delete; deleted side may have put a directory in the way */
char *renamed = NULL;
- if (lstat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+ if (dir_in_way(path, !o->call_depth)) {
renamed = unique_path(o, path, a_sha ? o->branch1 : o->branch2);
}
clean_merge = 0;
@@ -1489,7 +1508,7 @@ static int process_df_entry(struct merge_options *o,
sha = b_sha;
conf = "directory/file";
}
- if (lstat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+ if (dir_in_way(path, !o->call_depth)) {
char *new_path = unique_path(o, path, add_branch);
clean_merge = 0;
output(o, 1, "CONFLICT (%s): There is a directory with name %s in %s. "
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