*/
#include "cache.h"
#include "cache-tree.h"
+#include "refs.h"
/* Index extensions.
*
struct cache_tree *active_cache_tree;
-int cache_errno;
-
static void *cache_mmap;
static size_t cache_mmap_size;
if (fd >= 0) {
unsigned char sha1[20];
- if (!index_fd(sha1, fd, st, 0, NULL))
+ if (!index_fd(sha1, fd, st, 0, OBJ_BLOB, ce->name))
match = hashcmp(sha1, ce->sha1);
/* index_fd() closed the file descriptor already */
}
return match;
}
-static int ce_compare_link(struct cache_entry *ce, unsigned long expected_size)
+static int ce_compare_link(struct cache_entry *ce, size_t expected_size)
{
int match = -1;
char *target;
void *buffer;
unsigned long size;
- char type[10];
+ enum object_type type;
int len;
target = xmalloc(expected_size);
free(target);
return -1;
}
- buffer = read_sha1_file(ce->sha1, type, &size);
+ buffer = read_sha1_file(ce->sha1, &type, &size);
if (!buffer) {
free(target);
return -1;
return match;
}
+static int ce_compare_gitlink(struct cache_entry *ce)
+{
+ unsigned char sha1[20];
+
+ /*
+ * We don't actually require that the .git directory
+ * under DIRLNK directory be a valid git directory. It
+ * might even be missing (in case nobody populated that
+ * sub-project).
+ *
+ * If so, we consider it always to match.
+ */
+ if (resolve_gitlink_ref(ce->name, "HEAD", sha1) < 0)
+ return 0;
+ return hashcmp(sha1, ce->sha1);
+}
+
static int ce_modified_check_fs(struct cache_entry *ce, struct stat *st)
{
switch (st->st_mode & S_IFMT) {
return DATA_CHANGED;
break;
case S_IFLNK:
- if (ce_compare_link(ce, st->st_size))
+ if (ce_compare_link(ce, xsize_t(st->st_size)))
return DATA_CHANGED;
break;
+ case S_IFDIR:
+ if (S_ISDIRLNK(ntohl(ce->ce_mode)))
+ return 0;
default:
return TYPE_CHANGED;
}
changed |= MODE_CHANGED;
break;
case S_IFLNK:
- changed |= !S_ISLNK(st->st_mode) ? TYPE_CHANGED : 0;
+ if (!S_ISLNK(st->st_mode) &&
+ (has_symlinks || !S_ISREG(st->st_mode)))
+ changed |= TYPE_CHANGED;
break;
+ case S_IFDIRLNK:
+ if (!S_ISDIR(st->st_mode))
+ changed |= TYPE_CHANGED;
+ else if (ce_compare_gitlink(ce))
+ changed |= DATA_CHANGED;
+ return changed;
default:
die("internal error: ce_mode is %o", ntohl(ce->ce_mode));
}
return 0;
}
-int add_file_to_index(const char *path, int verbose)
+int add_file_to_cache(const char *path, int verbose)
{
int size, namelen;
struct stat st;
if (lstat(path, &st))
die("%s: unable to stat (%s)", path, strerror(errno));
- if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode))
- die("%s: can only add regular files or symbolic links", path);
+ if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode))
+ die("%s: can only add regular files, symbolic links or git-directories", path);
namelen = strlen(path);
+ if (S_ISDIR(st.st_mode)) {
+ while (namelen && path[namelen-1] == '/')
+ namelen--;
+ }
size = cache_entry_size(namelen);
ce = xcalloc(1, size);
memcpy(ce->name, path, namelen);
ce->ce_flags = htons(namelen);
fill_stat_cache_info(ce, &st);
- if (trust_executable_bit)
+ if (trust_executable_bit && has_symlinks)
ce->ce_mode = create_ce_mode(st.st_mode);
else {
- /* If there is an existing entry, pick the mode bits
- * from it, otherwise assume unexecutable.
+ /* If there is an existing entry, pick the mode bits and type
+ * from it, otherwise assume unexecutable regular file.
*/
struct cache_entry *ent;
int pos = cache_name_pos(path, namelen);
continue;
if (p->name[len] != '/')
continue;
+ if (!ce_stage(p) && !p->ce_mode)
+ continue;
retval = -1;
if (!ok_to_replace)
break;
pos = cache_name_pos(name, ntohs(create_ce_flags(len, stage)));
if (pos >= 0) {
- retval = -1;
- if (!ok_to_replace)
- break;
- remove_cache_entry_at(pos);
- continue;
+ /*
+ * Found one, but not so fast. This could
+ * be a marker that says "I was here, but
+ * I am being removed". Such an entry is
+ * not a part of the resulting tree, and
+ * it is Ok to have a directory at the same
+ * path.
+ */
+ if (stage || active_cache[pos]->ce_mode) {
+ retval = -1;
+ if (!ok_to_replace)
+ break;
+ remove_cache_entry_at(pos);
+ continue;
+ }
}
+ else
+ pos = -pos-1;
/*
* Trivial optimization: if we find an entry that
* already matches the sub-directory, then we know
* we're ok, and we can exit.
*/
- pos = -pos-1;
while (pos < active_nr) {
struct cache_entry *p = active_cache[pos];
if ((ce_namelen(p) <= len) ||
(p->name[len] != '/') ||
memcmp(p->name, name, len))
break; /* not our subdirectory */
- if (ce_stage(p) == stage)
+ if (ce_stage(p) == stage && (stage || p->ce_mode))
/* p is at the same stage as our entry, and
* is a subdirectory of what we are looking
* at, so we cannot have conflicts at our
*/
static int check_file_directory_conflict(const struct cache_entry *ce, int pos, int ok_to_replace)
{
+ int retval;
+
+ /*
+ * When ce is an "I am going away" entry, we allow it to be added
+ */
+ if (!ce_stage(ce) && !ce->ce_mode)
+ return 0;
+
/*
* We check if the path is a sub-path of a subsequent pathname
* first, since removing those will not change the position
- * in the array
+ * in the array.
*/
- int retval = has_file_name(ce, pos, ok_to_replace);
+ retval = has_file_name(ce, pos, ok_to_replace);
+
/*
* Then check if the path might have a clashing sub-directory
* before it.
* For example, you'd want to do this after doing a "git-read-tree",
* to link up the stat cache details with the proper files.
*/
-struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
+static struct cache_entry *refresh_cache_ent(struct cache_entry *ce, int really, int *err)
{
struct stat st;
struct cache_entry *updated;
int changed, size;
if (lstat(ce->name, &st) < 0) {
- cache_errno = errno;
+ if (err)
+ *err = errno;
return NULL;
}
}
if (ce_modified(ce, &st, really)) {
- cache_errno = EINVAL;
+ if (err)
+ *err = EINVAL;
return NULL;
}
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce, *new;
+ int cache_errno = 0;
+
ce = active_cache[i];
if (ce_stage(ce)) {
while ((i < active_nr) &&
continue;
}
- new = refresh_cache_entry(ce, really);
+ new = refresh_cache_ent(ce, really, &cache_errno);
if (new == ce)
continue;
if (!new) {
return has_errors;
}
+struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
+{
+ return refresh_cache_ent(ce, really, NULL);
+}
+
static int verify_hdr(struct cache_header *hdr, unsigned long size)
{
SHA_CTX c;
}
if (!fstat(fd, &st)) {
- cache_mmap_size = st.st_size;
+ cache_mmap_size = xsize_t(st.st_size);
errno = EINVAL;
if (cache_mmap_size >= sizeof(struct cache_header) + 20)
cache_mmap = xmmap(NULL, cache_mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);