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-rw-r--r--read-cache.c348
1 files changed, 265 insertions, 83 deletions
diff --git a/read-cache.c b/read-cache.c
index 525d138e90..4f2e890b01 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -8,6 +8,12 @@
#include "cache-tree.h"
#include "refs.h"
#include "dir.h"
+#include "tree.h"
+#include "commit.h"
+#include "blob.h"
+#include "resolve-undo.h"
+
+static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
/* Index extensions.
*
@@ -20,6 +26,7 @@
#define CACHE_EXT(s) ( (s[0]<<24)|(s[1]<<16)|(s[2]<<8)|(s[3]) )
#define CACHE_EXT_TREE 0x54524545 /* "TREE" */
+#define CACHE_EXT_RESOLVE_UNDO 0x52455543 /* "REUC" */
struct index_state the_index;
@@ -61,8 +68,10 @@ void rename_index_entry_at(struct index_state *istate, int nr, const char *new_n
*/
void fill_stat_cache_info(struct cache_entry *ce, struct stat *st)
{
- ce->ce_ctime = st->st_ctime;
- ce->ce_mtime = st->st_mtime;
+ ce->ce_ctime.sec = (unsigned int)st->st_ctime;
+ ce->ce_mtime.sec = (unsigned int)st->st_mtime;
+ ce->ce_ctime.nsec = ST_CTIME_NSEC(*st);
+ ce->ce_mtime.nsec = ST_MTIME_NSEC(*st);
ce->ce_dev = st->st_dev;
ce->ce_ino = st->st_ino;
ce->ce_uid = st->st_uid;
@@ -93,27 +102,21 @@ static int ce_compare_data(struct cache_entry *ce, struct stat *st)
static int ce_compare_link(struct cache_entry *ce, size_t expected_size)
{
int match = -1;
- char *target;
void *buffer;
unsigned long size;
enum object_type type;
- int len;
+ struct strbuf sb = STRBUF_INIT;
- target = xmalloc(expected_size);
- len = readlink(ce->name, target, expected_size);
- if (len != expected_size) {
- free(target);
+ if (strbuf_readlink(&sb, ce->name, expected_size))
return -1;
- }
+
buffer = read_sha1_file(ce->sha1, &type, &size);
- if (!buffer) {
- free(target);
- return -1;
+ if (buffer) {
+ if (size == sb.len)
+ match = memcmp(buffer, sb.buf, size);
+ free(buffer);
}
- if (size == expected_size)
- match = memcmp(buffer, target, size);
- free(buffer);
- free(target);
+ strbuf_release(&sb);
return match;
}
@@ -196,10 +199,17 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
default:
die("internal error: ce_mode is %o", ce->ce_mode);
}
- if (ce->ce_mtime != (unsigned int) st->st_mtime)
+ if (ce->ce_mtime.sec != (unsigned int)st->st_mtime)
+ changed |= MTIME_CHANGED;
+ if (trust_ctime && ce->ce_ctime.sec != (unsigned int)st->st_ctime)
+ changed |= CTIME_CHANGED;
+
+#ifdef USE_NSEC
+ if (ce->ce_mtime.nsec != ST_MTIME_NSEC(*st))
changed |= MTIME_CHANGED;
- if (trust_ctime && ce->ce_ctime != (unsigned int) st->st_ctime)
+ if (trust_ctime && ce->ce_ctime.nsec != ST_CTIME_NSEC(*st))
changed |= CTIME_CHANGED;
+#endif
if (ce->ce_uid != (unsigned int) st->st_uid ||
ce->ce_gid != (unsigned int) st->st_gid)
@@ -232,8 +242,16 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
static int is_racy_timestamp(const struct index_state *istate, struct cache_entry *ce)
{
return (!S_ISGITLINK(ce->ce_mode) &&
- istate->timestamp &&
- ((unsigned int)istate->timestamp) <= ce->ce_mtime);
+ istate->timestamp.sec &&
+#ifdef USE_NSEC
+ /* nanosecond timestamped files can also be racy! */
+ (istate->timestamp.sec < ce->ce_mtime.sec ||
+ (istate->timestamp.sec == ce->ce_mtime.sec &&
+ istate->timestamp.nsec <= ce->ce_mtime.nsec))
+#else
+ istate->timestamp.sec <= ce->ce_mtime.sec
+#endif
+ );
}
int ie_match_stat(const struct index_state *istate,
@@ -242,15 +260,28 @@ int ie_match_stat(const struct index_state *istate,
{
unsigned int changed;
int ignore_valid = options & CE_MATCH_IGNORE_VALID;
+ int ignore_skip_worktree = options & CE_MATCH_IGNORE_SKIP_WORKTREE;
int assume_racy_is_modified = options & CE_MATCH_RACY_IS_DIRTY;
/*
* If it's marked as always valid in the index, it's
* valid whatever the checked-out copy says.
+ *
+ * skip-worktree has the same effect with higher precedence
*/
+ if (!ignore_skip_worktree && ce_skip_worktree(ce))
+ return 0;
if (!ignore_valid && (ce->ce_flags & CE_VALID))
return 0;
+ /*
+ * Intent-to-add entries have not been added, so the index entry
+ * by definition never matches what is in the work tree until it
+ * actually gets added.
+ */
+ if (ce->ce_flags & CE_INTENT_TO_ADD)
+ return DATA_CHANGED | TYPE_CHANGED | MODE_CHANGED;
+
changed = ce_match_stat_basic(ce, st);
/*
@@ -424,6 +455,7 @@ int remove_index_entry_at(struct index_state *istate, int pos)
{
struct cache_entry *ce = istate->cache[pos];
+ record_resolve_undo(istate, ce);
remove_name_hash(ce);
istate->cache_changed = 1;
istate->cache_nr--;
@@ -435,6 +467,26 @@ int remove_index_entry_at(struct index_state *istate, int pos)
return 1;
}
+/*
+ * Remove all cache ententries marked for removal, that is where
+ * CE_REMOVE is set in ce_flags. This is much more effective than
+ * calling remove_index_entry_at() for each entry to be removed.
+ */
+void remove_marked_cache_entries(struct index_state *istate)
+{
+ struct cache_entry **ce_array = istate->cache;
+ unsigned int i, j;
+
+ for (i = j = 0; i < istate->cache_nr; i++) {
+ if (ce_array[i]->ce_flags & CE_REMOVE)
+ remove_name_hash(ce_array[i]);
+ else
+ ce_array[j++] = ce_array[i];
+ }
+ istate->cache_changed = 1;
+ istate->cache_nr = j;
+}
+
int remove_file_from_index(struct index_state *istate, const char *path)
{
int pos = index_name_pos(istate, path, strlen(path));
@@ -506,14 +558,25 @@ static struct cache_entry *create_alias_ce(struct cache_entry *ce, struct cache_
return new;
}
+static void record_intent_to_add(struct cache_entry *ce)
+{
+ unsigned char sha1[20];
+ if (write_sha1_file("", 0, blob_type, sha1))
+ die("cannot create an empty blob in the object database");
+ hashcpy(ce->sha1, sha1);
+}
+
int add_to_index(struct index_state *istate, const char *path, struct stat *st, int flags)
{
int size, namelen, was_same;
mode_t st_mode = st->st_mode;
struct cache_entry *ce, *alias;
- unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_RACY_IS_DIRTY;
+ unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE|CE_MATCH_RACY_IS_DIRTY;
int verbose = flags & (ADD_CACHE_VERBOSE | ADD_CACHE_PRETEND);
int pretend = flags & ADD_CACHE_PRETEND;
+ int intent_only = flags & ADD_CACHE_INTENT;
+ int add_option = (ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE|
+ (intent_only ? ADD_CACHE_NEW_ONLY : 0));
if (!S_ISREG(st_mode) && !S_ISLNK(st_mode) && !S_ISDIR(st_mode))
return error("%s: can only add regular files, symbolic links or git-directories", path);
@@ -527,7 +590,10 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
ce = xcalloc(1, size);
memcpy(ce->name, path, namelen);
ce->ce_flags = namelen;
- fill_stat_cache_info(ce, st);
+ if (!intent_only)
+ fill_stat_cache_info(ce, st);
+ else
+ ce->ce_flags |= CE_INTENT_TO_ADD;
if (trust_executable_bit && has_symlinks)
ce->ce_mode = create_ce_mode(st_mode);
@@ -542,16 +608,44 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
ce->ce_mode = ce_mode_from_stat(ent, st_mode);
}
+ /* When core.ignorecase=true, determine if a directory of the same name but differing
+ * case already exists within the Git repository. If it does, ensure the directory
+ * case of the file being added to the repository matches (is folded into) the existing
+ * entry's directory case.
+ */
+ if (ignore_case) {
+ const char *startPtr = ce->name;
+ const char *ptr = startPtr;
+ while (*ptr) {
+ while (*ptr && *ptr != '/')
+ ++ptr;
+ if (*ptr == '/') {
+ struct cache_entry *foundce;
+ ++ptr;
+ foundce = index_name_exists(&the_index, ce->name, ptr - ce->name, ignore_case);
+ if (foundce) {
+ memcpy((void *)startPtr, foundce->name + (startPtr - ce->name), ptr - startPtr);
+ startPtr = ptr;
+ }
+ }
+ }
+ }
+
alias = index_name_exists(istate, ce->name, ce_namelen(ce), ignore_case);
if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, st, ce_option)) {
/* Nothing changed, really */
free(ce);
- ce_mark_uptodate(alias);
+ if (!S_ISGITLINK(alias->ce_mode))
+ ce_mark_uptodate(alias);
alias->ce_flags |= CE_ADDED;
return 0;
}
- if (index_path(ce->sha1, path, st, 1))
- return error("unable to index file %s", path);
+ if (!intent_only) {
+ if (index_path(ce->sha1, path, st, 1))
+ return error("unable to index file %s", path);
+ } else
+ record_intent_to_add(ce);
+
if (ignore_case && alias && different_name(ce, alias))
ce = create_alias_ce(ce, alias);
ce->ce_flags |= CE_ADDED;
@@ -564,7 +658,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
if (pretend)
;
- else if (add_index_entry(istate, ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE))
+ else if (add_index_entry(istate, ce, add_option))
return error("unable to add %s to index",path);
if (verbose && !was_same)
printf("add '%s'\n", path);
@@ -575,7 +669,7 @@ int add_file_to_index(struct index_state *istate, const char *path, int flags)
{
struct stat st;
if (lstat(path, &st))
- die("%s: unable to stat (%s)", path, strerror(errno));
+ die_errno("unable to stat '%s'", path);
return add_to_index(istate, path, &st, flags);
}
@@ -586,8 +680,10 @@ struct cache_entry *make_cache_entry(unsigned int mode,
int size, len;
struct cache_entry *ce;
- if (!verify_path(path))
+ if (!verify_path(path)) {
+ error("Invalid path '%s'", path);
return NULL;
+ }
len = strlen(path);
size = cache_entry_size(len);
@@ -843,13 +939,15 @@ static int add_index_entry_with_check(struct index_state *istate, struct cache_e
int ok_to_add = option & ADD_CACHE_OK_TO_ADD;
int ok_to_replace = option & ADD_CACHE_OK_TO_REPLACE;
int skip_df_check = option & ADD_CACHE_SKIP_DFCHECK;
+ int new_only = option & ADD_CACHE_NEW_ONLY;
cache_tree_invalidate_path(istate->cache_tree, ce->name);
pos = index_name_pos(istate, ce->name, ce->ce_flags);
/* existing match? Just replace it. */
if (pos >= 0) {
- replace_index_entry(istate, pos, ce);
+ if (!new_only)
+ replace_index_entry(istate, pos, ce);
return 0;
}
pos = -pos-1;
@@ -869,7 +967,7 @@ static int add_index_entry_with_check(struct index_state *istate, struct cache_e
if (!ok_to_add)
return -1;
if (!verify_path(ce->name))
- return -1;
+ return error("Invalid path '%s'", ce->name);
if (!skip_df_check &&
check_file_directory_conflict(istate, ce, pos, ok_to_replace)) {
@@ -933,14 +1031,20 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
struct cache_entry *updated;
int changed, size;
int ignore_valid = options & CE_MATCH_IGNORE_VALID;
+ int ignore_skip_worktree = options & CE_MATCH_IGNORE_SKIP_WORKTREE;
if (ce_uptodate(ce))
return ce;
/*
- * CE_VALID means the user promised us that the change to
- * the work tree does not matter and told us not to worry.
+ * CE_VALID or CE_SKIP_WORKTREE means the user promised us
+ * that the change to the work tree does not matter and told
+ * us not to worry.
*/
+ if (!ignore_skip_worktree && ce_skip_worktree(ce)) {
+ ce_mark_uptodate(ce);
+ return ce;
+ }
if (!ignore_valid && (ce->ce_flags & CE_VALID)) {
ce_mark_uptodate(ce);
return ce;
@@ -970,7 +1074,8 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
* because CE_UPTODATE flag is in-core only;
* we are not going to write this change out.
*/
- ce_mark_uptodate(ce);
+ if (!S_ISGITLINK(ce->ce_mode))
+ ce_mark_uptodate(ce);
return ce;
}
}
@@ -998,7 +1103,18 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
return updated;
}
-int refresh_index(struct index_state *istate, unsigned int flags, const char **pathspec, char *seen)
+static void show_file(const char * fmt, const char * name, int in_porcelain,
+ int * first, char *header_msg)
+{
+ if (in_porcelain && *first && header_msg) {
+ printf("%s\n", header_msg);
+ *first=0;
+ }
+ printf(fmt, name);
+}
+
+int refresh_index(struct index_state *istate, unsigned int flags, const char **pathspec,
+ char *seen, char *header_msg)
{
int i;
int has_errors = 0;
@@ -1007,11 +1123,14 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
int quiet = (flags & REFRESH_QUIET) != 0;
int not_new = (flags & REFRESH_IGNORE_MISSING) != 0;
int ignore_submodules = (flags & REFRESH_IGNORE_SUBMODULES) != 0;
+ int first = 1;
+ int in_porcelain = (flags & REFRESH_IN_PORCELAIN);
unsigned int options = really ? CE_MATCH_IGNORE_VALID : 0;
- const char *needs_update_message;
+ const char *needs_update_fmt;
+ const char *needs_merge_fmt;
- needs_update_message = ((flags & REFRESH_SAY_CHANGED)
- ? "locally modified" : "needs update");
+ needs_update_fmt = (in_porcelain ? "M\t%s\n" : "%s: needs update\n");
+ needs_merge_fmt = (in_porcelain ? "U\t%s\n" : "%s: needs merge\n");
for (i = 0; i < istate->cache_nr; i++) {
struct cache_entry *ce, *new;
int cache_errno = 0;
@@ -1027,7 +1146,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
i--;
if (allow_unmerged)
continue;
- printf("%s: needs merge\n", ce->name);
+ show_file(needs_merge_fmt, ce->name, in_porcelain, &first, header_msg);
has_errors = 1;
continue;
}
@@ -1050,7 +1169,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
}
if (quiet)
continue;
- printf("%s: %s\n", ce->name, needs_update_message);
+ show_file(needs_update_fmt, ce->name, in_porcelain, &first, header_msg);
has_errors = 1;
continue;
}
@@ -1060,23 +1179,23 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
return has_errors;
}
-struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
+static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
{
return refresh_cache_ent(&the_index, ce, really, NULL);
}
static int verify_hdr(struct cache_header *hdr, unsigned long size)
{
- SHA_CTX c;
+ git_SHA_CTX c;
unsigned char sha1[20];
if (hdr->hdr_signature != htonl(CACHE_SIGNATURE))
return error("bad signature");
- if (hdr->hdr_version != htonl(2))
+ if (hdr->hdr_version != htonl(2) && hdr->hdr_version != htonl(3))
return error("bad index version");
- SHA1_Init(&c);
- SHA1_Update(&c, hdr, size - 20);
- SHA1_Final(sha1, &c);
+ git_SHA1_Init(&c);
+ git_SHA1_Update(&c, hdr, size - 20);
+ git_SHA1_Final(sha1, &c);
if (hashcmp(sha1, (unsigned char *)hdr + size - 20))
return error("bad index file sha1 signature");
return 0;
@@ -1089,6 +1208,9 @@ static int read_index_extension(struct index_state *istate,
case CACHE_EXT_TREE:
istate->cache_tree = cache_tree_read(data, sz);
break;
+ case CACHE_EXT_RESOLVE_UNDO:
+ istate->resolve_undo = resolve_undo_read(data, sz);
+ break;
default:
if (*ext < 'A' || 'Z' < *ext)
return error("index uses %.4s extension, which we do not understand",
@@ -1107,9 +1229,12 @@ int read_index(struct index_state *istate)
static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_entry *ce)
{
size_t len;
+ const char *name;
- ce->ce_ctime = ntohl(ondisk->ctime.sec);
- ce->ce_mtime = ntohl(ondisk->mtime.sec);
+ ce->ce_ctime.sec = ntohl(ondisk->ctime.sec);
+ ce->ce_mtime.sec = ntohl(ondisk->mtime.sec);
+ ce->ce_ctime.nsec = ntohl(ondisk->ctime.nsec);
+ ce->ce_mtime.nsec = ntohl(ondisk->mtime.nsec);
ce->ce_dev = ntohl(ondisk->dev);
ce->ce_ino = ntohl(ondisk->ino);
ce->ce_mode = ntohl(ondisk->mode);
@@ -1118,16 +1243,32 @@ static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_en
ce->ce_size = ntohl(ondisk->size);
/* On-disk flags are just 16 bits */
ce->ce_flags = ntohs(ondisk->flags);
+
hashcpy(ce->sha1, ondisk->sha1);
len = ce->ce_flags & CE_NAMEMASK;
+
+ if (ce->ce_flags & CE_EXTENDED) {
+ struct ondisk_cache_entry_extended *ondisk2;
+ int extended_flags;
+ ondisk2 = (struct ondisk_cache_entry_extended *)ondisk;
+ extended_flags = ntohs(ondisk2->flags2) << 16;
+ /* We do not yet understand any bit out of CE_EXTENDED_FLAGS */
+ if (extended_flags & ~CE_EXTENDED_FLAGS)
+ die("Unknown index entry format %08x", extended_flags);
+ ce->ce_flags |= extended_flags;
+ name = ondisk2->name;
+ }
+ else
+ name = ondisk->name;
+
if (len == CE_NAMEMASK)
- len = strlen(ondisk->name);
+ len = strlen(name);
/*
* NEEDSWORK: If the original index is crafted, this copy could
* go unchecked.
*/
- memcpy(ce->name, ondisk->name, len + 1);
+ memcpy(ce->name, name, len + 1);
}
static inline size_t estimate_cache_size(size_t ondisk_size, unsigned int entries)
@@ -1159,16 +1300,17 @@ int read_index_from(struct index_state *istate, const char *path)
return istate->cache_nr;
errno = ENOENT;
- istate->timestamp = 0;
+ istate->timestamp.sec = 0;
+ istate->timestamp.nsec = 0;
fd = open(path, O_RDONLY);
if (fd < 0) {
if (errno == ENOENT)
return 0;
- die("index file open failed (%s)", strerror(errno));
+ die_errno("index file open failed");
}
if (fstat(fd, &st))
- die("cannot stat the open index (%s)", strerror(errno));
+ die_errno("cannot stat the open index");
errno = EINVAL;
mmap_size = xsize_t(st.st_size);
@@ -1178,7 +1320,7 @@ int read_index_from(struct index_state *istate, const char *path)
mmap = xmmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
close(fd);
if (mmap == MAP_FAILED)
- die("unable to map index file");
+ die_errno("unable to map index file");
hdr = mmap;
if (verify_hdr(hdr, mmap_size) < 0)
@@ -1211,7 +1353,9 @@ int read_index_from(struct index_state *istate, const char *path)
src_offset += ondisk_ce_size(ce);
dst_offset += ce_size(ce);
}
- istate->timestamp = st.st_mtime;
+ istate->timestamp.sec = st.st_mtime;
+ istate->timestamp.nsec = ST_MTIME_NSEC(st);
+
while (src_offset <= mmap_size - 20 - 8) {
/* After an array of active_nr index entries,
* there can be arbitrary number of extended
@@ -1219,7 +1363,7 @@ int read_index_from(struct index_state *istate, const char *path)
* extension name (4-byte) and section length
* in 4-byte network byte order.
*/
- unsigned long extsize;
+ uint32_t extsize;
memcpy(&extsize, (char *)mmap + src_offset + 4, 4);
extsize = ntohl(extsize);
if (read_index_extension(istate,
@@ -1241,14 +1385,16 @@ unmap:
int is_index_unborn(struct index_state *istate)
{
- return (!istate->cache_nr && !istate->alloc && !istate->timestamp);
+ return (!istate->cache_nr && !istate->alloc && !istate->timestamp.sec);
}
int discard_index(struct index_state *istate)
{
+ resolve_undo_clear_index(istate);
istate->cache_nr = 0;
istate->cache_changed = 0;
- istate->timestamp = 0;
+ istate->timestamp.sec = 0;
+ istate->timestamp.nsec = 0;
istate->name_hash_initialized = 0;
free_hash(&istate->name_hash);
cache_tree_free(&(istate->cache_tree));
@@ -1274,11 +1420,11 @@ int unmerged_index(const struct index_state *istate)
static unsigned char write_buffer[WRITE_BUFFER_SIZE];
static unsigned long write_buffer_len;
-static int ce_write_flush(SHA_CTX *context, int fd)
+static int ce_write_flush(git_SHA_CTX *context, int fd)
{
unsigned int buffered = write_buffer_len;
if (buffered) {
- SHA1_Update(context, write_buffer, buffered);
+ git_SHA1_Update(context, write_buffer, buffered);
if (write_in_full(fd, write_buffer, buffered) != buffered)
return -1;
write_buffer_len = 0;
@@ -1286,7 +1432,7 @@ static int ce_write_flush(SHA_CTX *context, int fd)
return 0;
}
-static int ce_write(SHA_CTX *context, int fd, void *data, unsigned int len)
+static int ce_write(git_SHA_CTX *context, int fd, void *data, unsigned int len)
{
while (len) {
unsigned int buffered = write_buffer_len;
@@ -1308,7 +1454,7 @@ static int ce_write(SHA_CTX *context, int fd, void *data, unsigned int len)
return 0;
}
-static int write_index_ext_header(SHA_CTX *context, int fd,
+static int write_index_ext_header(git_SHA_CTX *context, int fd,
unsigned int ext, unsigned int sz)
{
ext = htonl(ext);
@@ -1317,13 +1463,13 @@ static int write_index_ext_header(SHA_CTX *context, int fd,
(ce_write(context, fd, &sz, 4) < 0)) ? -1 : 0;
}
-static int ce_flush(SHA_CTX *context, int fd)
+static int ce_flush(git_SHA_CTX *context, int fd)
{
unsigned int left = write_buffer_len;
if (left) {
write_buffer_len = 0;
- SHA1_Update(context, write_buffer, left);
+ git_SHA1_Update(context, write_buffer, left);
}
/* Flush first if not enough space for SHA1 signature */
@@ -1334,7 +1480,7 @@ static int ce_flush(SHA_CTX *context, int fd)
}
/* Append the SHA1 signature at the end */
- SHA1_Final(write_buffer + left, context);
+ git_SHA1_Final(write_buffer + left, context);
left += 20;
return (write_in_full(fd, write_buffer, left) != left) ? -1 : 0;
}
@@ -1388,15 +1534,17 @@ static void ce_smudge_racily_clean_entry(struct cache_entry *ce)
}
}
-static int ce_write_entry(SHA_CTX *c, int fd, struct cache_entry *ce)
+static int ce_write_entry(git_SHA_CTX *c, int fd, struct cache_entry *ce)
{
int size = ondisk_ce_size(ce);
struct ondisk_cache_entry *ondisk = xcalloc(1, size);
+ char *name;
+ int result;
- ondisk->ctime.sec = htonl(ce->ce_ctime);
- ondisk->ctime.nsec = 0;
- ondisk->mtime.sec = htonl(ce->ce_mtime);
- ondisk->mtime.nsec = 0;
+ ondisk->ctime.sec = htonl(ce->ce_ctime.sec);
+ ondisk->mtime.sec = htonl(ce->ce_mtime.sec);
+ ondisk->ctime.nsec = htonl(ce->ce_ctime.nsec);
+ ondisk->mtime.nsec = htonl(ce->ce_mtime.nsec);
ondisk->dev = htonl(ce->ce_dev);
ondisk->ino = htonl(ce->ce_ino);
ondisk->mode = htonl(ce->ce_mode);
@@ -1405,28 +1553,48 @@ static int ce_write_entry(SHA_CTX *c, int fd, struct cache_entry *ce)
ondisk->size = htonl(ce->ce_size);
hashcpy(ondisk->sha1, ce->sha1);
ondisk->flags = htons(ce->ce_flags);
- memcpy(ondisk->name, ce->name, ce_namelen(ce));
+ if (ce->ce_flags & CE_EXTENDED) {
+ struct ondisk_cache_entry_extended *ondisk2;
+ ondisk2 = (struct ondisk_cache_entry_extended *)ondisk;
+ ondisk2->flags2 = htons((ce->ce_flags & CE_EXTENDED_FLAGS) >> 16);
+ name = ondisk2->name;
+ }
+ else
+ name = ondisk->name;
+ memcpy(name, ce->name, ce_namelen(ce));
- return ce_write(c, fd, ondisk, size);
+ result = ce_write(c, fd, ondisk, size);
+ free(ondisk);
+ return result;
}
-int write_index(const struct index_state *istate, int newfd)
+int write_index(struct index_state *istate, int newfd)
{
- SHA_CTX c;
+ git_SHA_CTX c;
struct cache_header hdr;
- int i, err, removed;
+ int i, err, removed, extended;
struct cache_entry **cache = istate->cache;
int entries = istate->cache_nr;
+ struct stat st;
- for (i = removed = 0; i < entries; i++)
+ for (i = removed = extended = 0; i < entries; i++) {
if (cache[i]->ce_flags & CE_REMOVE)
removed++;
+ /* reduce extended entries if possible */
+ cache[i]->ce_flags &= ~CE_EXTENDED;
+ if (cache[i]->ce_flags & CE_EXTENDED_FLAGS) {
+ extended++;
+ cache[i]->ce_flags |= CE_EXTENDED;
+ }
+ }
+
hdr.hdr_signature = htonl(CACHE_SIGNATURE);
- hdr.hdr_version = htonl(2);
+ /* for extended format, increase version so older git won't try to read it */
+ hdr.hdr_version = htonl(extended ? 3 : 2);
hdr.hdr_entries = htonl(entries - removed);
- SHA1_Init(&c);
+ git_SHA1_Init(&c);
if (ce_write(&c, newfd, &hdr, sizeof(hdr)) < 0)
return -1;
@@ -1442,9 +1610,8 @@ int write_index(const struct index_state *istate, int newfd)
/* Write extension data here */
if (istate->cache_tree) {
- struct strbuf sb;
+ struct strbuf sb = STRBUF_INIT;
- strbuf_init(&sb, 0);
cache_tree_write(&sb, istate->cache_tree);
err = write_index_ext_header(&c, newfd, CACHE_EXT_TREE, sb.len) < 0
|| ce_write(&c, newfd, sb.buf, sb.len) < 0;
@@ -1452,12 +1619,28 @@ int write_index(const struct index_state *istate, int newfd)
if (err)
return -1;
}
- return ce_flush(&c, newfd);
+ if (istate->resolve_undo) {
+ struct strbuf sb = STRBUF_INIT;
+
+ resolve_undo_write(&sb, istate->resolve_undo);
+ err = write_index_ext_header(&c, newfd, CACHE_EXT_RESOLVE_UNDO,
+ sb.len) < 0
+ || ce_write(&c, newfd, sb.buf, sb.len) < 0;
+ strbuf_release(&sb);
+ if (err)
+ return -1;
+ }
+
+ if (ce_flush(&c, newfd) || fstat(newfd, &st))
+ return -1;
+ istate->timestamp.sec = (unsigned int)st.st_mtime;
+ istate->timestamp.nsec = ST_MTIME_NSEC(st);
+ return 0;
}
/*
* Read the index file that is potentially unmerged into given
- * index_state, dropping any unmerged entries. Returns true is
+ * index_state, dropping any unmerged entries. Returns true if
* the index is unmerged. Callers who want to refuse to work
* from an unmerged state can call this and check its return value,
* instead of calling read_cache().
@@ -1479,9 +1662,8 @@ int read_index_unmerged(struct index_state *istate)
len = strlen(ce->name);
size = cache_entry_size(len);
new_ce = xcalloc(1, size);
- hashcpy(new_ce->sha1, ce->sha1);
memcpy(new_ce->name, ce->name, len);
- new_ce->ce_flags = create_ce_flags(len, 0);
+ new_ce->ce_flags = create_ce_flags(len, 0) | CE_CONFLICTED;
new_ce->ce_mode = ce->ce_mode;
if (add_index_entry(istate, new_ce, 0))
return error("%s: cannot drop to stage #0",
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 23:49:10 +0000