*
* Copyright (C) Linus Torvalds, 2005
*/
+#include <signal.h>
#include "cache.h"
/*
* like "update-cache *" and suddenly having all the object
* files be revision controlled.
*/
-static int allow_add = 0, allow_remove = 0;
+static int allow_add = 0, allow_remove = 0, not_new = 0;
-static int index_fd(const char *path, int namelen, struct cache_entry *ce, int fd, struct stat *st)
+/* Three functions to allow overloaded pointer return; see linux/err.h */
+static inline void *ERR_PTR(long error)
+{
+ return (void *) error;
+}
+
+static inline long PTR_ERR(const void *ptr)
+{
+ return (long) ptr;
+}
+
+static inline long IS_ERR(const void *ptr)
+{
+ return (unsigned long)ptr > (unsigned long)-1000L;
+}
+
+static int index_fd(unsigned char *sha1, int fd, struct stat *st)
{
z_stream stream;
- int max_out_bytes = namelen + st->st_size + 200;
- void *out = malloc(max_out_bytes);
- void *metadata = malloc(namelen + 200);
- void *in = mmap(NULL, st->st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ unsigned long size = st->st_size;
+ int max_out_bytes = size + 200;
+ void *out = xmalloc(max_out_bytes);
+ void *metadata = xmalloc(200);
+ int metadata_size;
+ void *in;
SHA_CTX c;
+ in = "";
+ if (size)
+ in = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
if (!out || (int)(long)in == -1)
return -1;
+ metadata_size = 1+sprintf(metadata, "blob %lu", size);
+
+ SHA1_Init(&c);
+ SHA1_Update(&c, metadata, metadata_size);
+ SHA1_Update(&c, in, size);
+ SHA1_Final(sha1, &c);
+
memset(&stream, 0, sizeof(stream));
deflateInit(&stream, Z_BEST_COMPRESSION);
* ASCII size + nul byte
*/
stream.next_in = metadata;
- stream.avail_in = 1+sprintf(metadata, "blob %lu", (unsigned long) st->st_size);
+ stream.avail_in = metadata_size;
stream.next_out = out;
stream.avail_out = max_out_bytes;
while (deflate(&stream, 0) == Z_OK)
* File content
*/
stream.next_in = in;
- stream.avail_in = st->st_size;
+ stream.avail_in = size;
while (deflate(&stream, Z_FINISH) == Z_OK)
/*nothing */;
deflateEnd(&stream);
- SHA1_Init(&c);
- SHA1_Update(&c, out, stream.total_out);
- SHA1_Final(ce->sha1, &c);
-
- return write_sha1_buffer(ce->sha1, out, stream.total_out);
+ return write_sha1_buffer(sha1, out, stream.total_out);
}
/*
*/
static void fill_stat_cache_info(struct cache_entry *ce, struct stat *st)
{
- 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_uid = st->st_uid;
- ce->st_gid = st->st_gid;
+ ce->ce_ctime.sec = htonl(st->st_ctime);
+ ce->ce_mtime.sec = htonl(st->st_mtime);
+#ifdef NSEC
+ ce->ce_ctime.nsec = htonl(st->st_ctim.tv_nsec);
+ ce->ce_mtime.nsec = htonl(st->st_mtim.tv_nsec);
+#endif
+ ce->ce_dev = htonl(st->st_dev);
+ ce->ce_ino = htonl(st->st_ino);
+ ce->ce_uid = htonl(st->st_uid);
+ ce->ce_gid = htonl(st->st_gid);
+ ce->ce_size = htonl(st->st_size);
}
static int add_file_to_cache(char *path)
}
namelen = strlen(path);
size = cache_entry_size(namelen);
- ce = malloc(size);
+ ce = xmalloc(size);
memset(ce, 0, size);
memcpy(ce->name, path, namelen);
fill_stat_cache_info(ce, &st);
- ce->st_mode = st.st_mode;
- ce->st_size = st.st_size;
- ce->namelen = namelen;
+ ce->ce_mode = create_ce_mode(st.st_mode);
+ ce->ce_flags = htons(namelen);
- if (index_fd(path, namelen, ce, fd, &st) < 0)
+ if (index_fd(ce->sha1, fd, &st) < 0)
return -1;
return add_cache_entry(ce, allow_add);
int changed, size;
if (stat(ce->name, &st) < 0)
- return NULL;
+ return ERR_PTR(-errno);
changed = cache_match_stat(ce, &st);
if (!changed)
* to refresh the entry - it's not going to match
*/
if (changed & MODE_CHANGED)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (compare_data(ce, st.st_size))
- return NULL;
+ return ERR_PTR(-EINVAL);
size = ce_size(ce);
- updated = malloc(size);
+ updated = xmalloc(size);
memcpy(updated, ce, size);
fill_stat_cache_info(updated, &st);
- updated->st_size = st.st_size;
return updated;
}
int i;
for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce = active_cache[i];
- struct cache_entry *new = refresh_entry(ce);
+ struct cache_entry *ce, *new;
+ ce = active_cache[i];
+ if (ce_stage(ce)) {
+ printf("%s: needs merge\n", ce->name);
+ while ((i < active_nr) &&
+ ! strcmp(active_cache[i]->name, ce->name))
+ i++;
+ i--;
+ continue;
+ }
- if (!new) {
- printf("%s: needs update\n", ce->name);
+ new = refresh_entry(ce);
+ if (IS_ERR(new)) {
+ if (!(not_new && PTR_ERR(new) == -ENOENT))
+ printf("%s: needs update\n", ce->name);
continue;
}
active_cache[i] = new;
/*
* We fundamentally don't like some paths: we don't want
* dot or dot-dot anywhere, and in fact, we don't even want
- * any other dot-files (.dircache or anything else). They
+ * any other dot-files (.git or anything else). They
* are hidden, for chist sake.
*
* Also, we don't want double slashes or slashes at the
- * end that can make pathnames ambiguous.
+ * end that can make pathnames ambiguous.
*/
static int verify_path(char *path)
{
}
}
-static int remove_lock = 0;
+static int add_cacheinfo(char *arg1, char *arg2, char *arg3)
+{
+ int size, len;
+ unsigned int mode;
+ unsigned char sha1[20];
+ struct cache_entry *ce;
+
+ if (sscanf(arg1, "%o", &mode) != 1)
+ return -1;
+ if (get_sha1_hex(arg2, sha1))
+ return -1;
+ if (!verify_path(arg3))
+ return -1;
+
+ len = strlen(arg3);
+ size = cache_entry_size(len);
+ ce = xmalloc(size);
+ memset(ce, 0, size);
+
+ memcpy(ce->sha1, sha1, 20);
+ memcpy(ce->name, arg3, len);
+ ce->ce_flags = htons(len);
+ ce->ce_mode = create_ce_mode(mode);
+ return add_cache_entry(ce, allow_add);
+}
+
+static const char *lockfile_name = NULL;
static void remove_lock_file(void)
{
- if (remove_lock)
- unlink(".dircache/index.lock");
+ if (lockfile_name)
+ unlink(lockfile_name);
+}
+
+static void remove_lock_file_on_signal(int signo)
+{
+ remove_lock_file();
}
int main(int argc, char **argv)
{
int i, newfd, entries;
int allow_options = 1;
+ static char lockfile[MAXPATHLEN+1];
+ const char *indexfile = get_index_file();
+
+ snprintf(lockfile, sizeof(lockfile), "%s.lock", indexfile);
- newfd = open(".dircache/index.lock", O_RDWR | O_CREAT | O_EXCL, 0600);
+ newfd = open(lockfile, O_RDWR | O_CREAT | O_EXCL, 0600);
if (newfd < 0)
- usage("unable to create new cachefile");
+ die("unable to create new cachefile");
+ signal(SIGINT, remove_lock_file_on_signal);
atexit(remove_lock_file);
- remove_lock = 1;
+ lockfile_name = lockfile;
entries = read_cache();
if (entries < 0)
- usage("cache corrupted");
+ die("cache corrupted");
for (i = 1 ; i < argc; i++) {
char *path = argv[i];
refresh_cache();
continue;
}
- usage("unknown option %s", path);
+ if (!strcmp(path, "--cacheinfo")) {
+ if (i+3 >= argc || add_cacheinfo(argv[i+1], argv[i+2], argv[i+3]))
+ die("update-cache: --cacheinfo <mode> <sha1> <path>");
+ i += 3;
+ continue;
+ }
+ if (!strcmp(path, "--ignore-missing")) {
+ not_new = 1;
+ continue;
+ }
+ die("unknown option %s", path);
}
if (!verify_path(path)) {
fprintf(stderr, "Ignoring path %s\n", argv[i]);
continue;
}
if (add_file_to_cache(path))
- usage("Unable to add %s to database", path);
+ die("Unable to add %s to database", path);
}
- if (write_cache(newfd, active_cache, active_nr) ||
- rename(".dircache/index.lock", ".dircache/index"))
- usage("Unable to write new cachefile");
+ if (write_cache(newfd, active_cache, active_nr) || rename(lockfile, indexfile))
+ die("Unable to write new cachefile");
- remove_lock = 0;
+ lockfile_name = NULL;
return 0;
}
projects / git.git / blobdiff