In the following commits we will need some functions that were
internal to sha1_file.c, so let's first make them non static
and declare them in "cache.h". While at it, let's rename
'create_tmpfile()' to 'create_object_tmpfile()' to make its
name less generic.
Let's also split out 'sha1_file_name_alt()' from
'sha1_file_name()' and 'open_sha1_file_alt()' from
'open_sha1_file()', as we will need both of these new
functions too.
Helped-by: Jeff King <peff@xxxxxxxx>
Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
---
cache.h | 8 ++++++++
sha1_file.c | 47 +++++++++++++++++++++++++++++------------------
2 files changed, 37 insertions(+), 18 deletions(-)
diff --git a/cache.h b/cache.h
index 3fabf998ce..f41c102cb4 100644
--- a/cache.h
+++ b/cache.h
@@ -964,6 +964,12 @@ extern void check_repository_format(void);
*/
extern const char *sha1_file_name(const unsigned char *sha1);
+/*
+ * Like sha1_file_name, but return the filename within a specific alternate
+ * object directory. Shares the same static buffer with sha1_file_name.
+ */
+extern const char *sha1_file_name_alt(const char *objdir, const unsigned char *sha1);
+
/*
* Return an abbreviated sha1 unique within this repository's object database.
* The result will be at least `len` characters long, and will be NUL
@@ -1251,6 +1257,8 @@ extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
+extern int create_object_tmpfile(struct strbuf *tmp, const char *filename);
+extern void close_sha1_file(int fd);
extern int finalize_object_file(const char *tmpfile, const char *filename);
/*
diff --git a/sha1_file.c b/sha1_file.c
index 261baf800f..785e8dda03 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -322,17 +322,22 @@ static void fill_sha1_path(struct strbuf *buf, const unsigned char *sha1)
}
}
-const char *sha1_file_name(const unsigned char *sha1)
+const char *sha1_file_name_alt(const char *objdir, const unsigned char *sha1)
{
static struct strbuf buf = STRBUF_INIT;
strbuf_reset(&buf);
- strbuf_addf(&buf, "%s/", get_object_directory());
+ strbuf_addf(&buf, "%s/", objdir);
fill_sha1_path(&buf, sha1);
return buf.buf;
}
+const char *sha1_file_name(const unsigned char *sha1)
+{
+ return sha1_file_name_alt(get_object_directory(), sha1);
+}
+
struct strbuf *alt_scratch_buf(struct alternate_object_database *alt)
{
strbuf_setlen(&alt->scratch, alt->base_len);
@@ -902,24 +907,14 @@ static int stat_sha1_file(const unsigned char *sha1, struct stat *st,
return -1;
}
-/*
- * Like stat_sha1_file(), but actually open the object and return the
- * descriptor. See the caveats on the "path" parameter above.
- */
-static int open_sha1_file(const unsigned char *sha1, const char **path)
+static int open_sha1_file_alt(const unsigned char *sha1, const char **path)
{
- int fd;
struct alternate_object_database *alt;
- int most_interesting_errno;
-
- *path = sha1_file_name(sha1);
- fd = git_open(*path);
- if (fd >= 0)
- return fd;
- most_interesting_errno = errno;
+ int most_interesting_errno = errno;
prepare_alt_odb();
for (alt = alt_odb_list; alt; alt = alt->next) {
+ int fd;
*path = alt_sha1_path(alt, sha1);
fd = git_open(*path);
if (fd >= 0)
@@ -931,6 +926,22 @@ static int open_sha1_file(const unsigned char *sha1, const char **path)
return -1;
}
+/*
+ * Like stat_sha1_file(), but actually open the object and return the
+ * descriptor. See the caveats on the "path" parameter above.
+ */
+static int open_sha1_file(const unsigned char *sha1, const char **path)
+{
+ int fd;
+
+ *path = sha1_file_name(sha1);
+ fd = git_open(*path);
+ if (fd >= 0)
+ return fd;
+
+ return open_sha1_file_alt(sha1, path);
+}
+
/*
* Map the loose object at "path" if it is not NULL, or the path found by
* searching for a loose object named "sha1".
@@ -1527,7 +1538,7 @@ int hash_sha1_file(const void *buf, unsigned long len, const char *type,
}
/* Finalize a file on disk, and close it. */
-static void close_sha1_file(int fd)
+void close_sha1_file(int fd)
{
if (fsync_object_files)
fsync_or_die(fd, "sha1 file");
@@ -1551,7 +1562,7 @@ static inline int directory_size(const char *filename)
* We want to avoid cross-directory filename renames, because those
* can have problems on various filesystems (FAT, NFS, Coda).
*/
-static int create_tmpfile(struct strbuf *tmp, const char *filename)
+int create_object_tmpfile(struct strbuf *tmp, const char *filename)
{
int fd, dirlen = directory_size(filename);
@@ -1591,7 +1602,7 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
static struct strbuf tmp_file = STRBUF_INIT;
const char *filename = sha1_file_name(sha1);
- fd = create_tmpfile(&tmp_file, filename);
+ fd = create_object_tmpfile(&tmp_file, filename);
if (fd < 0) {
if (errno == EACCES)
return error("insufficient permission for adding an object to repository database %s", get_object_directory());
--
2.16.0.rc0.16.g82191dbc6c.dirty
