/*
* Determine whether we can simply reuse the file in the worktree.
*/
static int use_wt_file(const char *workdir, const char *name,
struct object_id *oid)
{
struct strbuf buf = STRBUF_INIT;
struct stat st;
int use = 0;
strbuf_addstr(&buf, workdir);
add_path(&buf, buf.len, name);
if (!lstat(buf.buf, &st) && !S_ISLNK(st.st_mode)) {
struct object_id wt_oid;
int fd = open(buf.buf, O_RDONLY);
if (fd >= 0 &&
!index_fd(wt_oid.hash, fd, &st, OBJ_BLOB, name, 0)) {
if (is_null_oid(oid)) {
oidcpy(oid, &wt_oid);
use = 1;
} else if (!oidcmp(oid, &wt_oid))
use = 1;
}
}
strbuf_release(&buf);
return use;
}
static void hash_fd(int fd, const char *type, int write_object, const char *path)
{
struct stat st;
unsigned char sha1[20];
if (fstat(fd, &st) < 0 ||
index_fd(sha1, fd, &st, write_object, type_from_string(type), path))
die(write_object
? "Unable to add %s to database"
: "Unable to hash %s", path);
printf("%s\n", sha1_to_hex(sha1));
maybe_flush_or_die(stdout, "hash to stdout");
}
static void hash_fd(int fd, const char *type, const char *path, unsigned flags,
int literally)
{
struct stat st;
unsigned char sha1[20];
if (fstat(fd, &st) < 0 ||
(literally
? hash_literally(sha1, fd, type, flags)
: index_fd(sha1, fd, &st, type_from_string(type), path, flags)))
die((flags & HASH_WRITE_OBJECT)
? "Unable to add %s to database"
: "Unable to hash %s", path);
printf("%s\n", sha1_to_hex(sha1));
maybe_flush_or_die(stdout, "hash to stdout");
}
static void hash_fd(int fd, const char *type, const char *path, unsigned flags,
int literally)
{
struct stat st;
struct object_id oid;
if (fstat(fd, &st) < 0 ||
(literally
? hash_literally(&oid, fd, type, flags)
: index_fd(the_repository->index, &oid, fd, &st,
type_from_string(type), path, flags)))
die((flags & HASH_WRITE_OBJECT)
? "Unable to add %s to database"
: "Unable to hash %s", path);
printf("%s\n", oid_to_hex(&oid));
maybe_flush_or_die(stdout, "hash to stdout");
}
static int add_file_to_cache(char *path)
{
int size, namelen;
struct cache_entry *ce;
struct stat st;
int fd;
fd = open(path, O_RDONLY);
if (fd < 0) {
if (errno == ENOENT)
return remove_file_from_cache(path);
return -1;
}
if (fstat(fd, &st) < 0) {
close(fd);
return -1;
}
namelen = strlen(path);
size = cache_entry_size(namelen);
ce = malloc(size);
memset(ce, 0, size);
memcpy(ce->name, path, namelen);
ce->ctime.sec = st.st_ctime;
ce->ctime.nsec = st.st_ctim.tv_nsec;
ce->mtime.sec = st.st_mtime;
ce->mtime.nsec = st.st_mtim.tv_nsec;
ce->st_dev = st.st_dev;
ce->st_ino = st.st_ino;
ce->st_mode = st.st_mode;
ce->st_uid = st.st_uid;
ce->st_gid = st.st_gid;
ce->st_size = st.st_size;
ce->namelen = namelen;
if (index_fd(path, namelen, ce, fd, &st) < 0)
return -1;
return add_cache_entry(ce);
}
/*
* Read a previously-exported (and possibly edited) object back from "filename",
* interpreting it as "type", and writing the result to the object database.
* The sha1 of the written object is returned via sha1.
*/
static int import_object(struct object_id *oid, enum object_type type,
int raw, const char *filename)
{
int fd;
fd = open(filename, O_RDONLY);
if (fd < 0)
return error_errno("unable to open %s for reading", filename);
if (!raw && type == OBJ_TREE) {
const char *argv[] = { "mktree", NULL };
struct child_process cmd = CHILD_PROCESS_INIT;
struct strbuf result = STRBUF_INIT;
cmd.argv = argv;
cmd.git_cmd = 1;
cmd.in = fd;
cmd.out = -1;
if (start_command(&cmd)) {
close(fd);
return error("unable to spawn mktree");
}
if (strbuf_read(&result, cmd.out, 41) < 0) {
error_errno("unable to read from mktree");
close(fd);
close(cmd.out);
return -1;
}
close(cmd.out);
if (finish_command(&cmd)) {
strbuf_release(&result);
return error("mktree reported failure");
}
if (get_oid_hex(result.buf, oid) < 0) {
strbuf_release(&result);
return error("mktree did not return an object name");
}
strbuf_release(&result);
} else {
struct stat st;
int flags = HASH_FORMAT_CHECK | HASH_WRITE_OBJECT;
if (fstat(fd, &st) < 0) {
error_errno("unable to fstat %s", filename);
close(fd);
return -1;
}
if (index_fd(oid, fd, &st, type, NULL, flags) < 0)
return error("unable to write object to database");
/* index_fd close()s fd for us */
}
/*
* No need to close(fd) here; both run-command and index-fd
* will have done it for us.
*/
return 0;
}
