static size_t peak_pack_mapped;
static size_t pack_mapped;
struct packed_git *packed_git;
-
-static struct mru packed_git_mru_storage;
-struct mru *packed_git_mru = &packed_git_mru_storage;
+struct mru packed_git_mru;
#define SZ_FMT PRIuMAX
static inline uintmax_t sz_fmt(size_t s) { return s; }
unsigned char sha1[20];
unsigned char *idx_sha1;
long fd_flag;
+ ssize_t read_result;
if (!p->index_data && open_pack_index(p))
return error("packfile %s index unavailable", p->pack_name);
return error("cannot set FD_CLOEXEC");
/* Verify we recognize this pack file format. */
- if (read_in_full(p->pack_fd, &hdr, sizeof(hdr)) != sizeof(hdr))
+ read_result = read_in_full(p->pack_fd, &hdr, sizeof(hdr));
+ if (read_result < 0)
+ return error_errno("error reading from %s", p->pack_name);
+ if (read_result != sizeof(hdr))
return error("file %s is far too short to be a packfile", p->pack_name);
if (hdr.hdr_signature != htonl(PACK_SIGNATURE))
return error("file %s is not a GIT packfile", p->pack_name);
p->num_objects);
if (lseek(p->pack_fd, p->pack_size - sizeof(sha1), SEEK_SET) == -1)
return error("end of packfile %s is unavailable", p->pack_name);
- if (read_in_full(p->pack_fd, sha1, sizeof(sha1)) != sizeof(sha1))
+ read_result = read_in_full(p->pack_fd, sha1, sizeof(sha1));
+ if (read_result < 0)
+ return error_errno("error reading from %s", p->pack_name);
+ if (read_result != sizeof(sha1))
return error("packfile %s signature is unavailable", p->pack_name);
idx_sha1 = ((unsigned char *)p->index_data) + p->index_size - 40;
if (hashcmp(sha1, idx_sha1))
{
struct packed_git *p;
- mru_clear(packed_git_mru);
+ mru_clear(&packed_git_mru);
for (p = packed_git; p; p = p->next)
- mru_append(packed_git_mru, p);
+ mru_append(&packed_git_mru, p);
}
static int prepare_packed_git_run_once = 0;
if (!packed_git)
return 0;
- for (p = packed_git_mru->head; p; p = p->next) {
+ for (p = packed_git_mru.head; p; p = p->next) {
if (fill_pack_entry(sha1, e, p->item)) {
- mru_mark(packed_git_mru, p);
+ mru_mark(&packed_git_mru, p);
return 1;
}
}
const struct object_id *oid, const char *logmsg,
struct strbuf *err);
-static int files_rename_ref(struct ref_store *ref_store,
+static int files_copy_or_rename_ref(struct ref_store *ref_store,
const char *oldrefname, const char *newrefname,
- const char *logmsg)
+ const char *logmsg, int copy)
{
struct files_ref_store *refs =
files_downcast(ref_store, REF_STORE_WRITE, "rename_ref");
}
if (flag & REF_ISSYMREF) {
- ret = error("refname %s is a symbolic ref, renaming it is not supported",
- oldrefname);
+ if (copy)
+ ret = error("refname %s is a symbolic ref, copying it is not supported",
+ oldrefname);
+ else
+ ret = error("refname %s is a symbolic ref, renaming it is not supported",
+ oldrefname);
goto out;
}
if (!refs_rename_ref_available(&refs->base, oldrefname, newrefname)) {
goto out;
}
- if (log && rename(sb_oldref.buf, tmp_renamed_log.buf)) {
+ if (!copy && log && rename(sb_oldref.buf, tmp_renamed_log.buf)) {
ret = error("unable to move logfile logs/%s to logs/"TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
goto out;
}
- if (refs_delete_ref(&refs->base, logmsg, oldrefname,
+ if (copy && log && copy_file(tmp_renamed_log.buf, sb_oldref.buf, 0644)) {
+ ret = error("unable to copy logfile logs/%s to logs/"TMP_RENAMED_LOG": %s",
+ oldrefname, strerror(errno));
+ goto out;
+ }
+
+ if (!copy && refs_delete_ref(&refs->base, logmsg, oldrefname,
orig_oid.hash, REF_NODEREF)) {
error("unable to delete old %s", oldrefname);
goto rollback;
* the safety anyway; we want to delete the reference whatever
* its current value.
*/
- if (!refs_read_ref_full(&refs->base, newrefname,
+ if (!copy && !refs_read_ref_full(&refs->base, newrefname,
RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
oid.hash, NULL) &&
refs_delete_ref(&refs->base, NULL, newrefname,
lock = lock_ref_sha1_basic(refs, newrefname, NULL, NULL, NULL,
REF_NODEREF, NULL, &err);
if (!lock) {
- error("unable to rename '%s' to '%s': %s", oldrefname, newrefname, err.buf);
+ if (copy)
+ error("unable to copy '%s' to '%s': %s", oldrefname, newrefname, err.buf);
+ else
+ error("unable to rename '%s' to '%s': %s", oldrefname, newrefname, err.buf);
strbuf_release(&err);
goto rollback;
}
return ret;
}
+static int files_rename_ref(struct ref_store *ref_store,
+ const char *oldrefname, const char *newrefname,
+ const char *logmsg)
+{
+ return files_copy_or_rename_ref(ref_store, oldrefname,
+ newrefname, logmsg, 0);
+}
+
+static int files_copy_ref(struct ref_store *ref_store,
+ const char *oldrefname, const char *newrefname,
+ const char *logmsg)
+{
+ return files_copy_or_rename_ref(ref_store, oldrefname,
+ newrefname, logmsg, 1);
+}
+
static int close_ref_gently(struct ref_lock *lock)
{
if (close_lock_file_gently(&lock->lk))
* check with HEAD only which should cover 99% of all usage
* scenarios (even 100% of the default ones).
*/
- struct object_id head_oid;
int head_flag;
const char *head_ref;
head_ref = refs_resolve_ref_unsafe(&refs->base, "HEAD",
RESOLVE_REF_READING,
- head_oid.hash, &head_flag);
+ NULL, &head_flag);
if (head_ref && (head_flag & REF_ISSYMREF) &&
!strcmp(head_ref, lock->ref_name)) {
struct strbuf log_err = STRBUF_INIT;
} else if (update &&
(write_in_full(get_lock_file_fd(&lock->lk),
oid_to_hex(&cb.last_kept_oid), GIT_SHA1_HEXSZ) < 0 ||
- write_str_in_full(get_lock_file_fd(&lock->lk), "\n") < 1 ||
+ write_str_in_full(get_lock_file_fd(&lock->lk), "\n") < 0 ||
close_ref_gently(lock) < 0)) {
status |= error("couldn't write %s",
get_lock_file_path(&lock->lk));
files_create_symref,
files_delete_refs,
files_rename_ref,
+ files_copy_ref,
files_ref_iterator_begin,
files_read_raw_ref,
return end;
}
-static void link_alt_odb_entries(const char *alt, int len, int sep,
+static void link_alt_odb_entries(const char *alt, int sep,
const char *relative_base, int depth)
{
struct strbuf objdirbuf = STRBUF_INIT;
static void read_info_alternates(const char * relative_base, int depth)
{
- char *map;
- size_t mapsz;
- struct stat st;
char *path;
- int fd;
+ struct strbuf buf = STRBUF_INIT;
path = xstrfmt("%s/info/alternates", relative_base);
- fd = git_open(path);
- free(path);
- if (fd < 0)
- return;
- if (fstat(fd, &st) || (st.st_size == 0)) {
- close(fd);
+ if (strbuf_read_file(&buf, path, 1024) < 0) {
+ warn_on_fopen_errors(path);
+ free(path);
return;
}
- mapsz = xsize_t(st.st_size);
- map = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, fd, 0);
- close(fd);
- link_alt_odb_entries(map, mapsz, '\n', relative_base, depth);
-
- munmap(map, mapsz);
+ link_alt_odb_entries(buf.buf, '\n', relative_base, depth);
+ strbuf_release(&buf);
+ free(path);
}
struct alternate_object_database *alloc_alt_odb(const char *dir)
if (commit_lock_file(lock))
die_errno("unable to move new alternates file into place");
if (alt_odb_tail)
- link_alt_odb_entries(reference, strlen(reference), '\n', NULL, 0);
+ link_alt_odb_entries(reference, '\n', NULL, 0);
}
free(alts);
}
*/
prepare_alt_odb();
- link_alt_odb_entries(reference, strlen(reference), '\n', NULL, 0);
+ link_alt_odb_entries(reference, '\n', NULL, 0);
}
/*
if (!alt) alt = "";
alt_odb_tail = &alt_odb_list;
- link_alt_odb_entries(alt, strlen(alt), PATH_SEP, NULL, 0);
+ link_alt_odb_entries(alt, PATH_SEP, NULL, 0);
read_info_alternates(get_object_directory(), 0);
}
ret = index_mem(sha1, "", size, type, path, flags);
} else if (size <= SMALL_FILE_SIZE) {
char *buf = xmalloc(size);
- if (size == read_in_full(fd, buf, size))
- ret = index_mem(sha1, buf, size, type, path, flags);
+ ssize_t read_result = read_in_full(fd, buf, size);
+ if (read_result < 0)
+ ret = error_errno("read error while indexing %s",
+ path ? path : "<unknown>");
+ else if (read_result != size)
+ ret = error("short read while indexing %s",
+ path ? path : "<unknown>");
else
- ret = error_errno("short read");
+ ret = index_mem(sha1, buf, size, type, path, flags);
free(buf);
} else {
void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);