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Diffstat (limited to 'sha1_file.c')
-rw-r--r--sha1_file.c168
1 files changed, 61 insertions, 107 deletions
diff --git a/sha1_file.c b/sha1_file.c
index c9ae7ec2ae..4f06a0e450 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -18,6 +18,7 @@
#include "refs.h"
#include "pack-revindex.h"
#include "sha1-lookup.h"
+#include "bulk-checkin.h"
#ifndef O_NOATIME
#if defined(__linux__) && (defined(__i386__) || defined(__PPC__))
@@ -53,6 +54,8 @@ static struct cached_object empty_tree = {
0
};
+static struct packed_git *last_found_pack;
+
static struct cached_object *find_cached_object(const unsigned char *sha1)
{
int i;
@@ -719,6 +722,8 @@ void free_pack_by_name(const char *pack_name)
close_pack_index(p);
free(p->bad_object_sha1);
*pp = p->next;
+ if (last_found_pack == p)
+ last_found_pack = NULL;
free(p);
return;
}
@@ -1201,6 +1206,11 @@ void *map_sha1_file(const unsigned char *sha1, unsigned long *size)
if (!fstat(fd, &st)) {
*size = xsize_t(st.st_size);
+ if (!*size) {
+ /* mmap() is forbidden on empty files */
+ error("object file %s is empty", sha1_file_name(sha1));
+ return NULL;
+ }
map = xmmap(NULL, *size, PROT_READ, MAP_PRIVATE, fd, 0);
}
close(fd);
@@ -2009,54 +2019,58 @@ int is_pack_valid(struct packed_git *p)
return !open_packed_git(p);
}
+static int fill_pack_entry(const unsigned char *sha1,
+ struct pack_entry *e,
+ struct packed_git *p)
+{
+ off_t offset;
+
+ if (p->num_bad_objects) {
+ unsigned i;
+ for (i = 0; i < p->num_bad_objects; i++)
+ if (!hashcmp(sha1, p->bad_object_sha1 + 20 * i))
+ return 0;
+ }
+
+ offset = find_pack_entry_one(sha1, p);
+ if (!offset)
+ return 0;
+
+ /*
+ * We are about to tell the caller where they can locate the
+ * requested object. We better make sure the packfile is
+ * still here and can be accessed before supplying that
+ * answer, as it may have been deleted since the index was
+ * loaded!
+ */
+ if (!is_pack_valid(p)) {
+ warning("packfile %s cannot be accessed", p->pack_name);
+ return 0;
+ }
+ e->offset = offset;
+ e->p = p;
+ hashcpy(e->sha1, sha1);
+ return 1;
+}
+
static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e)
{
- static struct packed_git *last_found = (void *)1;
struct packed_git *p;
- off_t offset;
prepare_packed_git();
if (!packed_git)
return 0;
- p = (last_found == (void *)1) ? packed_git : last_found;
- do {
- if (p->num_bad_objects) {
- unsigned i;
- for (i = 0; i < p->num_bad_objects; i++)
- if (!hashcmp(sha1, p->bad_object_sha1 + 20 * i))
- goto next;
- }
+ if (last_found_pack && fill_pack_entry(sha1, e, last_found_pack))
+ return 1;
- offset = find_pack_entry_one(sha1, p);
- if (offset) {
- /*
- * We are about to tell the caller where they can
- * locate the requested object. We better make
- * sure the packfile is still here and can be
- * accessed before supplying that answer, as
- * it may have been deleted since the index
- * was loaded!
- */
- if (!is_pack_valid(p)) {
- warning("packfile %s cannot be accessed", p->pack_name);
- goto next;
- }
- e->offset = offset;
- e->p = p;
- hashcpy(e->sha1, sha1);
- last_found = p;
- return 1;
- }
+ for (p = packed_git; p; p = p->next) {
+ if (p == last_found_pack || !fill_pack_entry(sha1, e, p))
+ continue;
- next:
- if (p == last_found)
- p = packed_git;
- else
- p = p->next;
- if (p == last_found)
- p = p->next;
- } while (p);
+ last_found_pack = p;
+ return 1;
+ }
return 0;
}
@@ -2451,15 +2465,15 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
git_SHA_CTX c;
unsigned char parano_sha1[20];
char *filename;
- static char tmpfile[PATH_MAX];
+ static char tmp_file[PATH_MAX];
filename = sha1_file_name(sha1);
- fd = create_tmpfile(tmpfile, sizeof(tmpfile), filename);
+ fd = create_tmpfile(tmp_file, sizeof(tmp_file), filename);
if (fd < 0) {
if (errno == EACCES)
return error("insufficient permission for adding an object to repository database %s\n", get_object_directory());
else
- return error("unable to create temporary sha1 filename %s: %s\n", tmpfile, strerror(errno));
+ return error("unable to create temporary sha1 filename %s: %s\n", tmp_file, strerror(errno));
}
/* Set it up */
@@ -2504,12 +2518,12 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
struct utimbuf utb;
utb.actime = mtime;
utb.modtime = mtime;
- if (utime(tmpfile, &utb) < 0)
+ if (utime(tmp_file, &utb) < 0)
warning("failed utime() on %s: %s",
- tmpfile, strerror(errno));
+ tmp_file, strerror(errno));
}
- return move_temp_to_file(tmpfile, filename);
+ return move_temp_to_file(tmp_file, filename);
}
int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *returnsha1)
@@ -2680,10 +2694,8 @@ static int index_core(unsigned char *sha1, int fd, size_t size,
}
/*
- * This creates one packfile per large blob, because the caller
- * immediately wants the result sha1, and fast-import can report the
- * object name via marks mechanism only by closing the created
- * packfile.
+ * This creates one packfile per large blob unless bulk-checkin
+ * machinery is "plugged".
*
* This also bypasses the usual "convert-to-git" dance, and that is on
* purpose. We could write a streaming version of the converting
@@ -2700,65 +2712,7 @@ static int index_stream(unsigned char *sha1, int fd, size_t size,
enum object_type type, const char *path,
unsigned flags)
{
- struct child_process fast_import;
- char export_marks[512];
- const char *argv[] = { "fast-import", "--quiet", export_marks, NULL };
- char tmpfile[512];
- char fast_import_cmd[512];
- char buf[512];
- int len, tmpfd;
-
- strcpy(tmpfile, git_path("hashstream_XXXXXX"));
- tmpfd = git_mkstemp_mode(tmpfile, 0600);
- if (tmpfd < 0)
- die_errno("cannot create tempfile: %s", tmpfile);
- if (close(tmpfd))
- die_errno("cannot close tempfile: %s", tmpfile);
- sprintf(export_marks, "--export-marks=%s", tmpfile);
-
- memset(&fast_import, 0, sizeof(fast_import));
- fast_import.in = -1;
- fast_import.argv = argv;
- fast_import.git_cmd = 1;
- if (start_command(&fast_import))
- die_errno("index-stream: git fast-import failed");
-
- len = sprintf(fast_import_cmd, "blob\nmark :1\ndata %lu\n",
- (unsigned long) size);
- write_or_whine(fast_import.in, fast_import_cmd, len,
- "index-stream: feeding fast-import");
- while (size) {
- char buf[10240];
- size_t sz = size < sizeof(buf) ? size : sizeof(buf);
- ssize_t actual;
-
- actual = read_in_full(fd, buf, sz);
- if (actual < 0)
- die_errno("index-stream: reading input");
- if (write_in_full(fast_import.in, buf, actual) != actual)
- die_errno("index-stream: feeding fast-import");
- size -= actual;
- }
- if (close(fast_import.in))
- die_errno("index-stream: closing fast-import");
- if (finish_command(&fast_import))
- die_errno("index-stream: finishing fast-import");
-
- tmpfd = open(tmpfile, O_RDONLY);
- if (tmpfd < 0)
- die_errno("index-stream: cannot open fast-import mark");
- len = read(tmpfd, buf, sizeof(buf));
- if (len < 0)
- die_errno("index-stream: reading fast-import mark");
- if (close(tmpfd) < 0)
- die_errno("index-stream: closing fast-import mark");
- if (unlink(tmpfile))
- die_errno("index-stream: unlinking fast-import mark");
- if (len != 44 ||
- memcmp(":1 ", buf, 3) ||
- get_sha1_hex(buf + 3, sha1))
- die_errno("index-stream: unexpected fast-import mark: <%s>", buf);
- return 0;
+ return index_bulk_checkin(sha1, fd, size, type, path, flags);
}
int index_fd(unsigned char *sha1, int fd, struct stat *st,
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-22 16:29:17 +0000