unsigned int ce_mode;
unsigned int ce_flags;
unsigned int ce_namelen;
+ unsigned int index; /* for link extension */
unsigned char sha1[20];
char name[FLEX_ARRAY]; /* more */
};
#define CE_STAGESHIFT 12
/*
- * Range 0xFFFF0000 in ce_flags is divided into
+ * Range 0xFFFF0FFF in ce_flags is divided into
* two parts: in-memory flags and on-disk ones.
* Flags in CE_EXTENDED_FLAGS will get saved on-disk
* if you want to save a new flag, add it in
/* used to temporarily mark paths matched by pathspecs */
#define CE_MATCHED (1 << 26)
+#define CE_UPDATE_IN_BASE (1 << 27)
+#define CE_STRIP_NAME (1 << 28)
+
/*
* Extended on-disk flags
*/
#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
+#define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */
+#define CE_ENTRY_CHANGED (1 << 1)
+#define CE_ENTRY_REMOVED (1 << 2)
+#define CE_ENTRY_ADDED (1 << 3)
+#define RESOLVE_UNDO_CHANGED (1 << 4)
+#define CACHE_TREE_CHANGED (1 << 5)
+#define SPLIT_INDEX_ORDERED (1 << 6)
+
+struct split_index;
struct index_state {
struct cache_entry **cache;
unsigned int version;
unsigned int cache_nr, cache_alloc, cache_changed;
struct string_list *resolve_undo;
struct cache_tree *cache_tree;
+ struct split_index *split_index;
struct cache_time timestamp;
unsigned name_hash_initialized : 1,
initialized : 1;
#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
#define is_cache_unborn() is_index_unborn(&the_index)
#define read_cache_unmerged() read_index_unmerged(&the_index)
-#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
#define discard_cache() discard_index(&the_index)
#define unmerged_cache() unmerged_index(&the_index)
#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
} while (0)
/* Initialize and use the cache information */
+struct lock_file;
extern int read_index(struct index_state *);
extern int read_index_preload(struct index_state *, const struct pathspec *pathspec);
+extern int do_read_index(struct index_state *istate, const char *path,
+ int must_exist); /* for testting only! */
extern int read_index_from(struct index_state *, const char *path);
extern int is_index_unborn(struct index_state *);
extern int read_index_unmerged(struct index_state *);
-extern int write_index(struct index_state *, int newfd);
+#define COMMIT_LOCK (1 << 0)
+#define CLOSE_LOCK (1 << 1)
+extern int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags);
extern int discard_index(struct index_state *);
extern int unmerged_index(const struct index_state *);
extern int verify_path(const char *path);
#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
+#define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */
extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
extern int remove_index_entry_at(struct index_state *, int pos);
#define LOCK_DIE_ON_ERROR 1
#define LOCK_NODEREF 2
extern int unable_to_lock_error(const char *path, int err);
+ extern void unable_to_lock_message(const char *path, int err,
+ struct strbuf *buf);
extern NORETURN void unable_to_lock_index_die(const char *path, int err);
extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
extern void update_index_if_able(struct index_state *, struct lock_file *);
extern int hold_locked_index(struct lock_file *, int);
-extern int commit_locked_index(struct lock_file *);
extern void set_alternate_index_output(const char *);
extern int close_lock_file(struct lock_file *);
extern void rollback_lock_file(struct lock_file *);
* NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
* give up and return NULL.
*
- * errno is sometimes set on errors, but not always.
+ * errno is set to something meaningful on error.
*/
extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
-extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
+extern int name_compare(const char *name1, size_t len1, const char *name2, size_t len2);
extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
extern void *read_object_with_reference(const unsigned char *sha1,
extern int ident_cmp(const struct ident_split *, const struct ident_split *);
struct checkout {
+ struct index_state *istate;
const char *base_dir;
int base_dir_len;
unsigned force:1,
extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
struct cache_def {
- char path[PATH_MAX + 1];
- int len;
+ struct strbuf path;
int flags;
int track_flags;
int prefix_len_stat_func;
};
+#define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 }
+static inline void cache_def_clear(struct cache_def *cache)
+{
+ strbuf_release(&cache->path);
+}
extern int has_symlink_leading_path(const char *name, int len);
extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
/*
* How to handle various characters in refnames:
+ * This table is used by both the SIMD and non-SIMD code. It has
+ * some cases that are only useful for the SIMD; these are handled
+ * equivalently to the listed disposition in the non-SIMD code.
* 0: An acceptable character for refs
- * 1: End-of-component
- * 2: ., look for a preceding . to reject .. in refs
- * 3: {, look for a preceding @ to reject @{ in refs
- * 4: A bad character: ASCII control characters, "~", "^", ":" or SP
+ * 1: @, look for a following { to reject @{ in refs (SIMD or = 0)
+ * 2: \0: End-of-component and string
+ * 3: /: End-of-component (SIMD or = 2)
+ * 4: ., look for a preceding . to reject .. in refs
+ * 5: {, look for a preceding @ to reject @{ in refs
+ * 6: *, usually a bad character except, once as a wildcard (SIMD or = 7)
+ * 7: A bad character except * (see check_refname_component below)
*/
static unsigned char refname_disposition[256] = {
- 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 2, 1,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4,
+ 2, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 4, 3,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 7,
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 7, 0, 7, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 7, 7
};
/*
* - any path component of it begins with ".", or
* - it has double dots "..", or
* - it has ASCII control character, "~", "^", ":" or SP, anywhere, or
- * - it ends with a "/".
- * - it ends with ".lock"
+ * - it has pattern-matching notation "*", "?", "[", anywhere, or
+ * - it ends with a "/", or
+ * - it ends with ".lock", or
* - it contains a "\" (backslash)
*/
static int check_refname_component(const char *refname, int flags)
int ch = *cp & 255;
unsigned char disp = refname_disposition[ch];
switch (disp) {
- case 1:
+ case 2: /* fall-through */
+ case 3:
goto out;
- case 2:
+ case 4:
if (last == '.')
return -1; /* Refname contains "..". */
break;
- case 3:
+ case 5:
if (last == '@')
return -1; /* Refname contains "@{". */
break;
- case 4:
+ case 6: /* fall-through */
+ case 7:
return -1;
}
last = ch;
return cp - refname;
}
-int check_refname_format(const char *refname, int flags)
+static int check_refname_format_bytewise(const char *refname, int flags)
{
int component_len, component_count = 0;
return 0;
}
+#if defined(__GNUC__) && defined(__x86_64__)
+#define SSE_VECTOR_BYTES 16
+
+/* Vectorized version of check_refname_format. */
+int check_refname_format(const char *refname, int flags)
+{
+ const char *cp = refname;
+
+ const __m128i dot = _mm_set1_epi8('.');
+ const __m128i at = _mm_set1_epi8('@');
+ const __m128i curly = _mm_set1_epi8('{');
+ const __m128i slash = _mm_set1_epi8('/');
+ const __m128i zero = _mm_set1_epi8('\000');
+ const __m128i el = _mm_set1_epi8('l');
+
+ /* below '*', all characters are forbidden or rare */
+ const __m128i star_ub = _mm_set1_epi8('*' + 1);
+
+ const __m128i colon = _mm_set1_epi8(':');
+ const __m128i question = _mm_set1_epi8('?');
+
+ /* '['..'^' contains 4 characters: 3 forbidden and 1 rare */
+ const __m128i bracket_lb = _mm_set1_epi8('[' - 1);
+ const __m128i caret_ub = _mm_set1_epi8('^' + 1);
+
+ /* '~' and above are forbidden */
+ const __m128i tilde_lb = _mm_set1_epi8('~' - 1);
+
+ int component_count = 0;
+ int orig_flags = flags;
+
+ if (refname[0] == 0 || refname[0] == '/') {
+ /* entirely empty ref or initial ref component */
+ return -1;
+ }
+
+ /*
+ * Initial ref component of '.'; below we look for /. so we'll
+ * miss this.
+ */
+ if (refname[0] == '.') {
+ if (refname[1] == '/' || refname[1] == '\0')
+ return -1;
+ if (!(flags & REFNAME_DOT_COMPONENT))
+ return -1;
+ }
+ while(1) {
+ __m128i tmp, tmp1, result;
+ uint64_t mask;
+
+ if ((uintptr_t) cp % PAGE_SIZE > PAGE_SIZE - SSE_VECTOR_BYTES - 1)
+ /*
+ * End-of-page; fall back to slow method for
+ * this entire ref.
+ */
+ return check_refname_format_bytewise(refname, orig_flags);
+
+ tmp = _mm_loadu_si128((__m128i *)cp);
+ tmp1 = _mm_loadu_si128((__m128i *)(cp + 1));
+
+ /*
+ * This range (note the lt) contains some
+ * permissible-but-rare characters (including all
+ * characters >= 128), which we handle later. It also
+ * includes \000.
+ */
+ result = _mm_cmplt_epi8(tmp, star_ub);
+
+ result = _mm_or_si128(result, _mm_cmpeq_epi8(tmp, question));
+ result = _mm_or_si128(result, _mm_cmpeq_epi8(tmp, colon));
+
+ /* This range contains the permissible ] as bycatch */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpgt_epi8(tmp, bracket_lb),
+ _mm_cmplt_epi8(tmp, caret_ub)));
+
+ result = _mm_or_si128(result, _mm_cmpgt_epi8(tmp, tilde_lb));
+
+ /* .. */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpeq_epi8(tmp, dot),
+ _mm_cmpeq_epi8(tmp1, dot)));
+ /* @{ */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpeq_epi8(tmp, at),
+ _mm_cmpeq_epi8(tmp1, curly)));
+ /* // */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpeq_epi8(tmp, slash),
+ _mm_cmpeq_epi8(tmp1, slash)));
+ /* trailing / */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpeq_epi8(tmp, slash),
+ _mm_cmpeq_epi8(tmp1, zero)));
+ /* .l, beginning of .lock */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpeq_epi8(tmp, dot),
+ _mm_cmpeq_epi8(tmp1, el)));
+ /*
+ * Even though /. is not necessarily an error, we flag
+ * it anyway. If we find it, we'll check if it's valid
+ * and if so we'll advance just past it.
+ */
+ result = _mm_or_si128(result, _mm_and_si128(
+ _mm_cmpeq_epi8(tmp, slash),
+ _mm_cmpeq_epi8(tmp1, dot)));
+
+ mask = _mm_movemask_epi8(result);
+ if (mask) {
+ /*
+ * We've found either end-of-string, or some
+ * probably-bad character or substring.
+ */
+ int i = __builtin_ctz(mask);
+ switch (refname_disposition[cp[i] & 255]) {
+ case 0: /* fall-through */
+ case 5:
+ /*
+ * bycatch: a good character that's in
+ * one of the ranges of mostly-forbidden
+ * characters
+ */
+ cp += i + 1;
+ break;
+ case 1:
+ if (cp[i + 1] == '{')
+ return -1;
+ cp += i + 1;
+ break;
+ case 2:
+ if (!(flags & REFNAME_ALLOW_ONELEVEL)
+ && !component_count && !strchr(refname, '/'))
+ /* Refname has only one component. */
+ return -1;
+ return 0;
+ case 3:
+ component_count ++;
+ /*
+ * Even if leading dots are allowed, don't
+ * allow "." as a component (".." is
+ * prevented by case 4 below).
+ */
+ if (cp[i + 1] == '.') {
+ if (cp[i + 2] == '\0')
+ return -1;
+ if (flags & REFNAME_DOT_COMPONENT) {
+ /* skip to just after the /. */
+ cp += i + 2;
+ break;
+ }
+ return -1;
+ } else if (cp[i + 1] == '/' || cp[i + 1] == '\0')
+ return -1;
+ break;
+ case 4:
+ if (cp[i + 1] == '.' || cp[i + 1] == '\0')
+ return -1;
+ /* .lock as end-of-component or end-of-string */
+ if ((!strncmp(cp + i, ".lock", 5))
+ && (cp[i + 5] == '/' || cp[i + 5] == 0))
+ return -1;
+ cp += 1;
+ break;
+ case 6:
+ if (((cp == refname + i) || cp[i - 1] == '/')
+ && (cp[i + 1] == '/' || cp[i + 1] == 0))
+ if (flags & REFNAME_REFSPEC_PATTERN) {
+ flags &= ~REFNAME_REFSPEC_PATTERN;
+ /* restart after the * */
+ cp += i + 1;
+ continue;
+ }
+ /* fall-through */
+ case 7:
+ return -1;
+ }
+ } else
+ cp += SSE_VECTOR_BYTES;
+ }
+}
+
+#else
+
+int check_refname_format (const char *refname, int flags)
+{
+ return check_refname_format_bytewise(refname, flags);
+}
+
+#endif
+
struct ref_entry;
/*
if (de->d_name[0] == '.')
continue;
- if (has_extension(de->d_name, ".lock"))
+ if (ends_with(de->d_name, ".lock"))
continue;
strbuf_addstr(&refname, de->d_name);
refdir = *refs->name
}
}
+ /* This function needs to return a meaningful errno on failure */
const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int reading, int *flag)
{
int depth = MAXDEPTH;
if (flag)
*flag = 0;
- if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL))
+ if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
+ errno = EINVAL;
return NULL;
+ }
for (;;) {
char path[PATH_MAX];
char *buf;
int fd;
- if (--depth < 0)
+ if (--depth < 0) {
+ errno = ELOOP;
return NULL;
+ }
git_snpath(path, sizeof(path), "%s", refname);
return NULL;
}
len = read_in_full(fd, buffer, sizeof(buffer)-1);
- close(fd);
- if (len < 0)
+ if (len < 0) {
+ int save_errno = errno;
+ close(fd);
+ errno = save_errno;
return NULL;
+ }
+ close(fd);
while (len && isspace(buffer[len-1]))
len--;
buffer[len] = '\0';
(buffer[40] != '\0' && !isspace(buffer[40]))) {
if (flag)
*flag |= REF_ISBROKEN;
+ errno = EINVAL;
return NULL;
}
return refname;
if (check_refname_format(buf, REFNAME_ALLOW_ONELEVEL)) {
if (flag)
*flag |= REF_ISBROKEN;
+ errno = EINVAL;
return NULL;
}
refname = strcpy(refname_buffer, buf);
return 0;
}
+ /* This function should make sure errno is meaningful on error */
static struct ref_lock *verify_lock(struct ref_lock *lock,
const unsigned char *old_sha1, int mustexist)
{
if (read_ref_full(lock->ref_name, lock->old_sha1, mustexist, NULL)) {
+ int save_errno = errno;
error("Can't verify ref %s", lock->ref_name);
unlock_ref(lock);
+ errno = save_errno;
return NULL;
}
if (hashcmp(lock->old_sha1, old_sha1)) {
error("Ref %s is at %s but expected %s", lock->ref_name,
sha1_to_hex(lock->old_sha1), sha1_to_hex(old_sha1));
unlock_ref(lock);
+ errno = EBUSY;
return NULL;
}
return lock;
* only empty directories), remove them.
*/
struct strbuf path;
- int result;
+ int result, save_errno;
strbuf_init(&path, 20);
strbuf_addstr(&path, file);
result = remove_dir_recursively(&path, REMOVE_DIR_EMPTY_ONLY);
+ save_errno = errno;
strbuf_release(&path);
+ errno = save_errno;
return result;
}
return logs_found;
}
+ /* This function should make sure errno is meaningful on error */
static struct ref_lock *lock_ref_sha1_basic(const char *refname,
const unsigned char *old_sha1,
int flags, int *type_p)
return 0;
}
+ /* This should return a meaningful errno on failure */
int lock_packed_refs(int flags)
{
struct packed_ref_cache *packed_ref_cache;
return 0;
}
+ /*
+ * Commit the packed refs changes.
+ * On error we must make sure that errno contains a meaningful value.
+ */
int commit_packed_refs(void)
{
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(&ref_cache);
int error = 0;
+ int save_errno = 0;
if (!packed_ref_cache->lock)
die("internal error: packed-refs not locked");
do_for_each_entry_in_dir(get_packed_ref_dir(packed_ref_cache),
0, write_packed_entry_fn,
&packed_ref_cache->lock->fd);
- if (commit_lock_file(packed_ref_cache->lock))
+ if (commit_lock_file(packed_ref_cache->lock)) {
+ save_errno = errno;
error = -1;
+ }
packed_ref_cache->lock = NULL;
release_packed_ref_cache(packed_ref_cache);
+ errno = save_errno;
return error;
}
return 0;
}
- int repack_without_refs(const char **refnames, int n)
+ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
{
struct ref_dir *packed;
struct string_list refs_to_delete = STRING_LIST_INIT_DUP;
struct string_list_item *ref_to_delete;
- int i, removed = 0;
+ int i, ret, removed = 0;
/* Look for a packed ref */
for (i = 0; i < n; i++)
return 0; /* no refname exists in packed refs */
if (lock_packed_refs(0)) {
+ if (err) {
+ unable_to_lock_message(git_path("packed-refs"), errno,
+ err);
+ return -1;
+ }
unable_to_lock_error(git_path("packed-refs"), errno);
return error("cannot delete '%s' from packed refs", refnames[i]);
}
}
/* Write what remains */
- return commit_packed_refs();
+ ret = commit_packed_refs();
+ if (ret && err)
+ strbuf_addf(err, "unable to overwrite old ref-pack file: %s",
+ strerror(errno));
+ return ret;
}
static int repack_without_ref(const char *refname)
{
- return repack_without_refs(&refname, 1);
+ return repack_without_refs(&refname, 1, NULL);
}
static int delete_ref_loose(struct ref_lock *lock, int flag)
return cp - buf;
}
+ /* This function must set a meaningful errno on failure */
int log_ref_setup(const char *refname, char *logfile, int bufsize)
{
int logfd, oflags = O_APPEND | O_WRONLY;
starts_with(refname, "refs/remotes/") ||
starts_with(refname, "refs/notes/") ||
!strcmp(refname, "HEAD"))) {
- if (safe_create_leading_directories(logfile) < 0)
- return error("unable to create directory for %s",
- logfile);
+ if (safe_create_leading_directories(logfile) < 0) {
+ int save_errno = errno;
+ error("unable to create directory for %s", logfile);
+ errno = save_errno;
+ return -1;
+ }
oflags |= O_CREAT;
}
if ((oflags & O_CREAT) && errno == EISDIR) {
if (remove_empty_directories(logfile)) {
- return error("There are still logs under '%s'",
- logfile);
+ int save_errno = errno;
+ error("There are still logs under '%s'",
+ logfile);
+ errno = save_errno;
+ return -1;
}
logfd = open(logfile, oflags, 0666);
}
- if (logfd < 0)
- return error("Unable to append to %s: %s",
- logfile, strerror(errno));
+ if (logfd < 0) {
+ int save_errno = errno;
+ error("Unable to append to %s: %s", logfile,
+ strerror(errno));
+ errno = save_errno;
+ return -1;
+ }
}
adjust_shared_perm(logfile);
len += copy_msg(logrec + len - 1, msg) - 1;
written = len <= maxlen ? write_in_full(logfd, logrec, len) : -1;
free(logrec);
- if (close(logfd) != 0 || written != len)
- return error("Unable to append to %s", log_file);
+ if (written != len) {
+ int save_errno = errno;
+ close(logfd);
+ error("Unable to append to %s", log_file);
+ errno = save_errno;
+ return -1;
+ }
+ if (close(logfd)) {
+ int save_errno = errno;
+ error("Unable to append to %s", log_file);
+ errno = save_errno;
+ return -1;
+ }
return 0;
}
return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/");
}
+ /* This function must return a meaningful errno */
int write_ref_sha1(struct ref_lock *lock,
const unsigned char *sha1, const char *logmsg)
{
static char term = '\n';
struct object *o;
- if (!lock)
+ if (!lock) {
+ errno = EINVAL;
return -1;
+ }
if (!lock->force_write && !hashcmp(lock->old_sha1, sha1)) {
unlock_ref(lock);
return 0;
error("Trying to write ref %s with nonexistent object %s",
lock->ref_name, sha1_to_hex(sha1));
unlock_ref(lock);
+ errno = EINVAL;
return -1;
}
if (o->type != OBJ_COMMIT && is_branch(lock->ref_name)) {
error("Trying to write non-commit object %s to branch %s",
sha1_to_hex(sha1), lock->ref_name);
unlock_ref(lock);
+ errno = EINVAL;
return -1;
}
if (write_in_full(lock->lock_fd, sha1_to_hex(sha1), 40) != 40 ||
- write_in_full(lock->lock_fd, &term, 1) != 1
- || close_ref(lock) < 0) {
+ write_in_full(lock->lock_fd, &term, 1) != 1 ||
+ close_ref(lock) < 0) {
+ int save_errno = errno;
error("Couldn't write %s", lock->lk->filename);
unlock_ref(lock);
+ errno = save_errno;
return -1;
}
clear_loose_ref_cache(&ref_cache);
if (de->d_name[0] == '.')
continue;
- if (has_extension(de->d_name, ".lock"))
+ if (ends_with(de->d_name, ".lock"))
continue;
strbuf_addstr(name, de->d_name);
if (stat(git_path("logs/%s", name->buf), &st) < 0) {
static int update_ref_write(const char *action, const char *refname,
const unsigned char *sha1, struct ref_lock *lock,
- enum action_on_err onerr)
+ struct strbuf *err, enum action_on_err onerr)
{
if (write_ref_sha1(lock, sha1, action) < 0) {
const char *str = "Cannot update the ref '%s'.";
+ if (err)
+ strbuf_addf(err, str, refname);
+
switch (onerr) {
case UPDATE_REFS_MSG_ON_ERR: error(str, refname); break;
case UPDATE_REFS_DIE_ON_ERR: die(str, refname); break;
return xcalloc(1, sizeof(struct ref_transaction));
}
- static void ref_transaction_free(struct ref_transaction *transaction)
+ void ref_transaction_free(struct ref_transaction *transaction)
{
int i;
+ if (!transaction)
+ return;
+
for (i = 0; i < transaction->nr; i++)
free(transaction->updates[i]);
free(transaction);
}
- void ref_transaction_rollback(struct ref_transaction *transaction)
- {
- ref_transaction_free(transaction);
- }
-
static struct ref_update *add_update(struct ref_transaction *transaction,
const char *refname)
{
return update;
}
- void ref_transaction_update(struct ref_transaction *transaction,
- const char *refname,
- unsigned char *new_sha1, unsigned char *old_sha1,
- int flags, int have_old)
+ int ref_transaction_update(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ int flags, int have_old,
+ struct strbuf *err)
{
- struct ref_update *update = add_update(transaction, refname);
+ struct ref_update *update;
+ if (have_old && !old_sha1)
+ die("BUG: have_old is true but old_sha1 is NULL");
+
+ update = add_update(transaction, refname);
hashcpy(update->new_sha1, new_sha1);
update->flags = flags;
update->have_old = have_old;
if (have_old)
hashcpy(update->old_sha1, old_sha1);
+ return 0;
}
void ref_transaction_create(struct ref_transaction *transaction,
const char *refname,
- unsigned char *new_sha1,
+ const unsigned char *new_sha1,
int flags)
{
struct ref_update *update = add_update(transaction, refname);
void ref_transaction_delete(struct ref_transaction *transaction,
const char *refname,
- unsigned char *old_sha1,
+ const unsigned char *old_sha1,
int flags, int have_old)
{
struct ref_update *update = add_update(transaction, refname);
lock = update_ref_lock(refname, oldval, flags, NULL, onerr);
if (!lock)
return 1;
- return update_ref_write(action, refname, sha1, lock, onerr);
+ return update_ref_write(action, refname, sha1, lock, NULL, onerr);
}
static int ref_update_compare(const void *r1, const void *r2)
}
static int ref_update_reject_duplicates(struct ref_update **updates, int n,
- enum action_on_err onerr)
+ struct strbuf *err)
{
int i;
for (i = 1; i < n; i++)
if (!strcmp(updates[i - 1]->refname, updates[i]->refname)) {
const char *str =
"Multiple updates for ref '%s' not allowed.";
- switch (onerr) {
- case UPDATE_REFS_MSG_ON_ERR:
- error(str, updates[i]->refname); break;
- case UPDATE_REFS_DIE_ON_ERR:
- die(str, updates[i]->refname); break;
- case UPDATE_REFS_QUIET_ON_ERR:
- break;
- }
+ if (err)
+ strbuf_addf(err, str, updates[i]->refname);
+
return 1;
}
return 0;
}
int ref_transaction_commit(struct ref_transaction *transaction,
- const char *msg, enum action_on_err onerr)
+ const char *msg, struct strbuf *err)
{
int ret = 0, delnum = 0, i;
const char **delnames;
/* Copy, sort, and reject duplicate refs */
qsort(updates, n, sizeof(*updates), ref_update_compare);
- ret = ref_update_reject_duplicates(updates, n, onerr);
+ ret = ref_update_reject_duplicates(updates, n, err);
if (ret)
goto cleanup;
(update->have_old ?
update->old_sha1 : NULL),
update->flags,
- &update->type, onerr);
+ &update->type,
+ UPDATE_REFS_QUIET_ON_ERR);
if (!update->lock) {
+ if (err)
+ strbuf_addf(err, "Cannot lock the ref '%s'.",
+ update->refname);
ret = 1;
goto cleanup;
}
ret = update_ref_write(msg,
update->refname,
update->new_sha1,
- update->lock, onerr);
+ update->lock, err,
+ UPDATE_REFS_QUIET_ON_ERR);
update->lock = NULL; /* freed by update_ref_write */
if (ret)
goto cleanup;
}
}
- ret |= repack_without_refs(delnames, delnum);
+ ret |= repack_without_refs(delnames, delnum, err);
for (i = 0; i < delnum; i++)
unlink_or_warn(git_path("logs/%s", delnames[i]));
clear_loose_ref_cache(&ref_cache);
if (updates[i]->lock)
unlock_ref(updates[i]->lock);
free(delnames);
- ref_transaction_free(transaction);
return ret;
}