diff options
| -rw-r--r-- | commit.h | 2 | ||||
| -rw-r--r-- | fetch-pack.c | 73 | ||||
| -rw-r--r-- | git.c | 7 | ||||
| -rw-r--r-- | shallow.c | 42 | ||||
| -rwxr-xr-x | t/t5500-fetch-pack.sh | 7 |
5 files changed, 93 insertions, 38 deletions
@@ -176,6 +176,8 @@ extern int for_each_commit_graft(each_commit_graft_fn, void *); extern int is_repository_shallow(void); extern struct commit_list *get_shallow_commits(struct object_array *heads, int depth, int shallow_flag, int not_shallow_flag); +extern void check_shallow_file_for_update(void); +extern void set_alternate_shallow_file(const char *path); int is_descendant_of(struct commit *, struct commit_list *); int in_merge_bases(struct commit *, struct commit *); diff --git a/fetch-pack.c b/fetch-pack.c index f156dd4fac..6b5467c6de 100644 --- a/fetch-pack.c +++ b/fetch-pack.c @@ -20,6 +20,8 @@ static int no_done; static int fetch_fsck_objects = -1; static int transfer_fsck_objects = -1; static int agent_supported; +static struct lock_file shallow_lock; +static const char *alternate_shallow_file; #define COMPLETE (1U << 0) #define COMMON (1U << 1) @@ -683,7 +685,7 @@ static int get_pack(struct fetch_pack_args *args, int xd[2], char **pack_lockfile) { struct async demux; - const char *argv[20]; + const char *argv[22]; char keep_arg[256]; char hdr_arg[256]; const char **av; @@ -724,6 +726,11 @@ static int get_pack(struct fetch_pack_args *args, do_keep = 1; } + if (alternate_shallow_file) { + *av++ = "--shallow-file"; + *av++ = alternate_shallow_file; + } + if (do_keep) { if (pack_lockfile) cmd.out = -1; @@ -779,6 +786,27 @@ static int cmp_ref_by_name(const void *a_, const void *b_) return strcmp(a->name, b->name); } +static void setup_alternate_shallow(void) +{ + struct strbuf sb = STRBUF_INIT; + int fd; + + check_shallow_file_for_update(); + fd = hold_lock_file_for_update(&shallow_lock, git_path("shallow"), + LOCK_DIE_ON_ERROR); + if (write_shallow_commits(&sb, 0)) { + if (write_in_full(fd, sb.buf, sb.len) != sb.len) + die_errno("failed to write to %s", shallow_lock.filename); + alternate_shallow_file = shallow_lock.filename; + } else + /* + * is_repository_shallow() sees empty string as "no + * shallow file". + */ + alternate_shallow_file = ""; + strbuf_release(&sb); +} + static struct ref *do_fetch_pack(struct fetch_pack_args *args, int fd[2], const struct ref *orig_ref, @@ -858,6 +886,8 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args, if (args->stateless_rpc) packet_flush(fd[1]); + if (args->depth > 0) + setup_alternate_shallow(); if (get_pack(args, fd, pack_lockfile)) die("git fetch-pack: fetch failed."); @@ -936,15 +966,9 @@ struct ref *fetch_pack(struct fetch_pack_args *args, struct ref **sought, int nr_sought, char **pack_lockfile) { - struct stat st; struct ref *ref_cpy; fetch_pack_setup(); - if (args->depth > 0) { - if (stat(git_path("shallow"), &st)) - st.st_mtime = 0; - } - if (nr_sought) nr_sought = remove_duplicates_in_refs(sought, nr_sought); @@ -954,35 +978,12 @@ struct ref *fetch_pack(struct fetch_pack_args *args, } ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought, pack_lockfile); - if (args->depth > 0) { - static struct lock_file lock; - struct cache_time mtime; - struct strbuf sb = STRBUF_INIT; - char *shallow = git_path("shallow"); - int fd; - - mtime.sec = st.st_mtime; - mtime.nsec = ST_MTIME_NSEC(st); - if (stat(shallow, &st)) { - if (mtime.sec) - die("shallow file was removed during fetch"); - } else if (st.st_mtime != mtime.sec -#ifdef USE_NSEC - || ST_MTIME_NSEC(st) != mtime.nsec -#endif - ) - die("shallow file was changed during fetch"); - - fd = hold_lock_file_for_update(&lock, shallow, - LOCK_DIE_ON_ERROR); - if (!write_shallow_commits(&sb, 0) - || write_in_full(fd, sb.buf, sb.len) != sb.len) { - unlink_or_warn(shallow); - rollback_lock_file(&lock); - } else { - commit_lock_file(&lock); - } - strbuf_release(&sb); + if (alternate_shallow_file) { + if (*alternate_shallow_file == '\0') { /* --unshallow */ + unlink_or_warn(git_path("shallow")); + rollback_lock_file(&shallow_lock); + } else + commit_lock_file(&shallow_lock); } reprepare_packed_git(); @@ -4,6 +4,7 @@ #include "help.h" #include "quote.h" #include "run-command.h" +#include "commit.h" const char git_usage_string[] = "git [--version] [--help] [-c name=value]\n" @@ -146,6 +147,12 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1); if (envchanged) *envchanged = 1; + } else if (!strcmp(cmd, "--shallow-file")) { + (*argv)++; + (*argc)--; + set_alternate_shallow_file((*argv)[0]); + if (envchanged) + *envchanged = 1; } else { fprintf(stderr, "Unknown option: %s\n", cmd); usage(git_usage_string); @@ -3,6 +3,16 @@ #include "tag.h" static int is_shallow = -1; +static struct stat shallow_stat; +static char *alternate_shallow_file; + +void set_alternate_shallow_file(const char *path) +{ + if (is_shallow != -1) + die("BUG: is_repository_shallow must not be called before set_alternate_shallow_file"); + free(alternate_shallow_file); + alternate_shallow_file = path ? xstrdup(path) : NULL; +} int register_shallow(const unsigned char *sha1) { @@ -21,12 +31,21 @@ int is_repository_shallow(void) { FILE *fp; char buf[1024]; + const char *path = alternate_shallow_file; if (is_shallow >= 0) return is_shallow; - fp = fopen(git_path("shallow"), "r"); - if (!fp) { + if (!path) + path = git_path("shallow"); + /* + * fetch-pack sets '--shallow-file ""' as an indicator that no + * shallow file should be used. We could just open it and it + * will likely fail. But let's do an explicit check instead. + */ + if (!*path || + stat(path, &shallow_stat) || + (fp = fopen(path, "r")) == NULL) { is_shallow = 0; return is_shallow; } @@ -108,3 +127,22 @@ struct commit_list *get_shallow_commits(struct object_array *heads, int depth, return result; } + +void check_shallow_file_for_update(void) +{ + struct stat st; + + if (!is_shallow) + return; + else if (is_shallow == -1) + die("BUG: shallow must be initialized by now"); + + if (stat(git_path("shallow"), &st)) + die("shallow file was removed during fetch"); + else if (st.st_mtime != shallow_stat.st_mtime +#ifdef USE_NSEC + || ST_MTIME_NSEC(st) != ST_MTIME_NSEC(shallow_stat) +#endif + ) + die("shallow file was changed during fetch"); +} diff --git a/t/t5500-fetch-pack.sh b/t/t5500-fetch-pack.sh index d574085696..557b073b36 100755 --- a/t/t5500-fetch-pack.sh +++ b/t/t5500-fetch-pack.sh @@ -135,6 +135,13 @@ test_expect_success 'clone shallow depth 1' ' test "`git --git-dir=shallow0/.git rev-list --count HEAD`" = 1 ' +test_expect_success 'clone shallow depth 1 with fsck' ' + git config --global fetch.fsckobjects true && + git clone --no-single-branch --depth 1 "file://$(pwd)/." shallow0fsck && + test "`git --git-dir=shallow0fsck/.git rev-list --count HEAD`" = 1 && + git config --global --unset fetch.fsckobjects +' + test_expect_success 'clone shallow' ' git clone --no-single-branch --depth 2 "file://$(pwd)/." shallow ' |