diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | builtin/verify-pack.c | 4 | ||||
| -rw-r--r-- | cache.h | 36 | ||||
| -rw-r--r-- | convert.c | 23 | ||||
| -rw-r--r-- | entry.c | 112 | ||||
| -rw-r--r-- | sha1_file.c | 71 | ||||
| -rw-r--r-- | streaming.c | 371 | ||||
| -rw-r--r-- | streaming.h | 15 |
8 files changed, 593 insertions, 41 deletions
@@ -556,6 +556,7 @@ LIB_H += sha1-lookup.h LIB_H += sideband.h LIB_H += sigchain.h LIB_H += strbuf.h +LIB_H += streaming.h LIB_H += string-list.h LIB_H += submodule.h LIB_H += tag.h @@ -662,6 +663,7 @@ LIB_OBJS += shallow.o LIB_OBJS += sideband.o LIB_OBJS += sigchain.o LIB_OBJS += strbuf.o +LIB_OBJS += streaming.o LIB_OBJS += string-list.o LIB_OBJS += submodule.o LIB_OBJS += symlinks.o diff --git a/builtin/verify-pack.c b/builtin/verify-pack.c index b6079ae6cb..3a919b1707 100644 --- a/builtin/verify-pack.c +++ b/builtin/verify-pack.c @@ -33,9 +33,9 @@ static void show_pack_info(struct packed_git *p, unsigned int flags) if (!sha1) die("internal error pack-check nth-packed-object"); offset = nth_packed_object_offset(p, i); - type = packed_object_info_detail(p, offset, &size, &store_size, + type = typename(packed_object_info_detail(p, offset, &size, &store_size, &delta_chain_length, - base_sha1); + base_sha1)); if (!stat_only) printf("%s ", sha1_to_hex(sha1)); if (!delta_chain_length) { @@ -780,6 +780,9 @@ extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1); extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); extern int force_object_loose(const unsigned char *sha1, time_t mtime); +extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size); +extern int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz); +extern int parse_sha1_header(const char *hdr, unsigned long *sizep); /* global flag to enable extra checks when accessing packed objects */ extern int do_check_packed_object_crc; @@ -1021,7 +1024,37 @@ extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *); extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); -extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); +extern int packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); +extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *); + +struct object_info { + /* Request */ + unsigned long *sizep; + + /* Response */ + enum { + OI_CACHED, + OI_LOOSE, + OI_PACKED, + OI_DBCACHED + } whence; + union { + /* + * struct { + * ... Nothing to expose in this case + * } cached; + * struct { + * ... Nothing to expose in this case + * } loose; + */ + struct { + struct packed_git *pack; + off_t offset; + unsigned int is_delta; + } packed; + } u; +}; +extern int sha1_object_info_extended(const unsigned char *, struct object_info *); /* Dumb servers support */ extern int update_server_info(int); @@ -1135,6 +1168,7 @@ extern int convert_to_git(const char *path, const char *src, size_t len, struct strbuf *dst, enum safe_crlf checksafe); extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst); extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst); +extern int can_bypass_conversion(const char *path); /* add */ /* @@ -813,3 +813,26 @@ int renormalize_buffer(const char *path, const char *src, size_t len, struct str } return ret | convert_to_git(path, src, len, dst, 0); } + +/* + * You would be crazy to set CRLF, smuge/clean or ident to + * a large binary blob you would want us not to slurp into + * the memory! + */ +int can_bypass_conversion(const char *path) +{ + struct conv_attrs ca; + enum crlf_action crlf_action; + + convert_attrs(&ca, path); + + if (ca.ident || + (ca.drv && (ca.drv->smudge || ca.drv->clean))) + return 0; + + crlf_action = input_crlf_action(ca.crlf_action, ca.eol_attr); + if ((crlf_action == CRLF_BINARY) || (crlf_action == CRLF_INPUT) || + (crlf_action == CRLF_GUESS && auto_crlf == AUTO_CRLF_FALSE)) + return 1; + return 0; +} @@ -1,6 +1,7 @@ #include "cache.h" #include "blob.h" #include "dir.h" +#include "streaming.h" static void create_directories(const char *path, int path_len, const struct checkout *state) @@ -91,6 +92,90 @@ static void *read_blob_entry(struct cache_entry *ce, unsigned long *size) return NULL; } +static int open_output_fd(char *path, struct cache_entry *ce, int to_tempfile) +{ + int symlink = (ce->ce_mode & S_IFMT) != S_IFREG; + if (to_tempfile) { + strcpy(path, symlink + ? ".merge_link_XXXXXX" : ".merge_file_XXXXXX"); + return mkstemp(path); + } else { + return create_file(path, !symlink ? ce->ce_mode : 0666); + } +} + +static int fstat_output(int fd, const struct checkout *state, struct stat *st) +{ + /* use fstat() only when path == ce->name */ + if (fstat_is_reliable() && + state->refresh_cache && !state->base_dir_len) { + fstat(fd, st); + return 1; + } + return 0; +} + +static int streaming_write_entry(struct cache_entry *ce, char *path, + const struct checkout *state, int to_tempfile, + int *fstat_done, struct stat *statbuf) +{ + struct git_istream *st; + enum object_type type; + unsigned long sz; + int result = -1; + ssize_t kept = 0; + int fd = -1; + + st = open_istream(ce->sha1, &type, &sz); + if (!st) + return -1; + if (type != OBJ_BLOB) + goto close_and_exit; + + fd = open_output_fd(path, ce, to_tempfile); + if (fd < 0) + goto close_and_exit; + + for (;;) { + char buf[1024 * 16]; + ssize_t wrote, holeto; + ssize_t readlen = read_istream(st, buf, sizeof(buf)); + + if (!readlen) + break; + if (sizeof(buf) == readlen) { + for (holeto = 0; holeto < readlen; holeto++) + if (buf[holeto]) + break; + if (readlen == holeto) { + kept += holeto; + continue; + } + } + + if (kept && lseek(fd, kept, SEEK_CUR) == (off_t) -1) + goto close_and_exit; + else + kept = 0; + wrote = write_in_full(fd, buf, readlen); + + if (wrote != readlen) + goto close_and_exit; + } + if (kept && (lseek(fd, kept - 1, SEEK_CUR) == (off_t) -1 || + write(fd, "", 1) != 1)) + goto close_and_exit; + *fstat_done = fstat_output(fd, state, statbuf); + +close_and_exit: + close_istream(st); + if (0 <= fd) + result = close(fd); + if (result && 0 <= fd) + unlink(path); + return result; +} + static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile) { unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT; @@ -101,6 +186,12 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout size_t wrote, newsize = 0; struct stat st; + if ((ce_mode_s_ifmt == S_IFREG) && + can_bypass_conversion(path) && + !streaming_write_entry(ce, path, state, to_tempfile, + &fstat_done, &st)) + goto finish; + switch (ce_mode_s_ifmt) { case S_IFREG: case S_IFLNK: @@ -128,17 +219,7 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout size = newsize; } - if (to_tempfile) { - if (ce_mode_s_ifmt == S_IFREG) - strcpy(path, ".merge_file_XXXXXX"); - else - strcpy(path, ".merge_link_XXXXXX"); - fd = mkstemp(path); - } else if (ce_mode_s_ifmt == S_IFREG) { - fd = create_file(path, ce->ce_mode); - } else { - fd = create_file(path, 0666); - } + fd = open_output_fd(path, ce, to_tempfile); if (fd < 0) { free(new); return error("unable to create file %s (%s)", @@ -146,12 +227,8 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout } wrote = write_in_full(fd, new, size); - /* use fstat() only when path == ce->name */ - if (fstat_is_reliable() && - state->refresh_cache && !to_tempfile && !state->base_dir_len) { - fstat(fd, &st); - fstat_done = 1; - } + if (!to_tempfile) + fstat_done = fstat_output(fd, state, &st); close(fd); free(new); if (wrote != size) @@ -167,6 +244,7 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout return error("unknown file mode for %s in index", path); } +finish: if (state->refresh_cache) { if (!fstat_done) lstat(ce->name, &st); diff --git a/sha1_file.c b/sha1_file.c index 064a330408..8a85217996 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -1186,7 +1186,7 @@ static int open_sha1_file(const unsigned char *sha1) return -1; } -static void *map_sha1_file(const unsigned char *sha1, unsigned long *size) +void *map_sha1_file(const unsigned char *sha1, unsigned long *size) { void *map; int fd; @@ -1245,7 +1245,7 @@ unsigned long unpack_object_header_buffer(const unsigned char *buf, return used; } -static int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz) +int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz) { unsigned long size, used; static const char valid_loose_object_type[8] = { @@ -1342,7 +1342,7 @@ static void *unpack_sha1_rest(z_stream *stream, void *buffer, unsigned long size * too permissive for what we want to check. So do an anal * object header parse by hand. */ -static int parse_sha1_header(const char *hdr, unsigned long *sizep) +int parse_sha1_header(const char *hdr, unsigned long *sizep) { char type[10]; int i; @@ -1481,7 +1481,7 @@ static off_t get_delta_base(struct packed_git *p, /* forward declaration for a mutually recursive function */ static int packed_object_info(struct packed_git *p, off_t offset, - unsigned long *sizep); + unsigned long *sizep, int *rtype); static int packed_delta_info(struct packed_git *p, struct pack_window **w_curs, @@ -1495,7 +1495,7 @@ static int packed_delta_info(struct packed_git *p, base_offset = get_delta_base(p, w_curs, &curpos, type, obj_offset); if (!base_offset) return OBJ_BAD; - type = packed_object_info(p, base_offset, NULL); + type = packed_object_info(p, base_offset, NULL, NULL); if (type <= OBJ_NONE) { struct revindex_entry *revidx; const unsigned char *base_sha1; @@ -1523,10 +1523,10 @@ static int packed_delta_info(struct packed_git *p, return type; } -static int unpack_object_header(struct packed_git *p, - struct pack_window **w_curs, - off_t *curpos, - unsigned long *sizep) +int unpack_object_header(struct packed_git *p, + struct pack_window **w_curs, + off_t *curpos, + unsigned long *sizep) { unsigned char *base; unsigned int left; @@ -1549,7 +1549,7 @@ static int unpack_object_header(struct packed_git *p, return type; } -const char *packed_object_info_detail(struct packed_git *p, +int packed_object_info_detail(struct packed_git *p, off_t obj_offset, unsigned long *size, unsigned long *store_size, @@ -1580,7 +1580,7 @@ const char *packed_object_info_detail(struct packed_git *p, case OBJ_BLOB: case OBJ_TAG: unuse_pack(&w_curs); - return typename(type); + return type; case OBJ_OFS_DELTA: obj_offset = get_delta_base(p, &w_curs, &curpos, type, obj_offset); if (!obj_offset) @@ -1605,7 +1605,7 @@ const char *packed_object_info_detail(struct packed_git *p, } static int packed_object_info(struct packed_git *p, off_t obj_offset, - unsigned long *sizep) + unsigned long *sizep, int *rtype) { struct pack_window *w_curs = NULL; unsigned long size; @@ -1613,6 +1613,8 @@ static int packed_object_info(struct packed_git *p, off_t obj_offset, enum object_type type; type = unpack_object_header(p, &w_curs, &curpos, &size); + if (rtype) + *rtype = type; /* representation type */ switch (type) { case OBJ_OFS_DELTA: @@ -1695,6 +1697,13 @@ static unsigned long pack_entry_hash(struct packed_git *p, off_t base_offset) return hash % MAX_DELTA_CACHE; } +static int in_delta_base_cache(struct packed_git *p, off_t base_offset) +{ + unsigned long hash = pack_entry_hash(p, base_offset); + struct delta_base_cache_entry *ent = delta_base_cache + hash; + return (ent->data && ent->p == p && ent->base_offset == base_offset); +} + static void *cache_or_unpack_entry(struct packed_git *p, off_t base_offset, unsigned long *base_size, enum object_type *type, int keep_cache) { @@ -2093,24 +2102,28 @@ static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *size return status; } -int sha1_object_info(const unsigned char *sha1, unsigned long *sizep) +/* returns enum object_type or negative */ +int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi) { struct cached_object *co; struct pack_entry e; - int status; + int status, rtype; co = find_cached_object(sha1); if (co) { - if (sizep) - *sizep = co->size; + if (oi->sizep) + *(oi->sizep) = co->size; + oi->whence = OI_CACHED; return co->type; } if (!find_pack_entry(sha1, &e)) { /* Most likely it's a loose object. */ - status = sha1_loose_object_info(sha1, sizep); - if (status >= 0) + status = sha1_loose_object_info(sha1, oi->sizep); + if (status >= 0) { + oi->whence = OI_LOOSE; return status; + } /* Not a loose object; someone else may have just packed it. */ reprepare_packed_git(); @@ -2118,15 +2131,31 @@ int sha1_object_info(const unsigned char *sha1, unsigned long *sizep) return status; } - status = packed_object_info(e.p, e.offset, sizep); + status = packed_object_info(e.p, e.offset, oi->sizep, &rtype); if (status < 0) { mark_bad_packed_object(e.p, sha1); - status = sha1_object_info(sha1, sizep); + status = sha1_object_info_extended(sha1, oi); + } else if (in_delta_base_cache(e.p, e.offset)) { + oi->whence = OI_DBCACHED; + } else { + oi->whence = OI_PACKED; + oi->u.packed.offset = e.offset; + oi->u.packed.pack = e.p; + oi->u.packed.is_delta = (rtype == OBJ_REF_DELTA || + rtype == OBJ_OFS_DELTA); } return status; } +int sha1_object_info(const unsigned char *sha1, unsigned long *sizep) +{ + struct object_info oi; + + oi.sizep = sizep; + return sha1_object_info_extended(sha1, &oi); +} + static void *read_packed_sha1(const unsigned char *sha1, enum object_type *type, unsigned long *size) { @@ -2704,7 +2733,7 @@ static int index_stream(unsigned char *sha1, int fd, size_t size, while (size) { char buf[10240]; size_t sz = size < sizeof(buf) ? size : sizeof(buf); - size_t actual; + ssize_t actual; actual = read_in_full(fd, buf, sz); if (actual < 0) diff --git a/streaming.c b/streaming.c new file mode 100644 index 0000000000..0602926644 --- /dev/null +++ b/streaming.c @@ -0,0 +1,371 @@ +/* + * Copyright (c) 2011, Google Inc. + */ +#include "cache.h" +#include "streaming.h" + +enum input_source { + stream_error = -1, + incore = 0, + loose = 1, + pack_non_delta = 2 +}; + +typedef int (*open_istream_fn)(struct git_istream *, + struct object_info *, + const unsigned char *, + enum object_type *); +typedef int (*close_istream_fn)(struct git_istream *); +typedef ssize_t (*read_istream_fn)(struct git_istream *, char *, size_t); + +struct stream_vtbl { + close_istream_fn close; + read_istream_fn read; +}; + +#define open_method_decl(name) \ + int open_istream_ ##name \ + (struct git_istream *st, struct object_info *oi, \ + const unsigned char *sha1, \ + enum object_type *type) + +#define close_method_decl(name) \ + int close_istream_ ##name \ + (struct git_istream *st) + +#define read_method_decl(name) \ + ssize_t read_istream_ ##name \ + (struct git_istream *st, char *buf, size_t sz) + +/* forward declaration */ +static open_method_decl(incore); +static open_method_decl(loose); +static open_method_decl(pack_non_delta); + +static open_istream_fn open_istream_tbl[] = { + open_istream_incore, + open_istream_loose, + open_istream_pack_non_delta, +}; + +struct git_istream { + const struct stream_vtbl *vtbl; + unsigned long size; /* inflated size of full object */ + z_stream z; + enum { z_unused, z_used, z_done, z_error } z_state; + + union { + struct { + char *buf; /* from read_object() */ + unsigned long read_ptr; + } incore; + + struct { + void *mapped; + unsigned long mapsize; + char hdr[32]; + int hdr_avail; + int hdr_used; + } loose; + + struct { + struct packed_git *pack; + off_t pos; + } in_pack; + } u; +}; + +int close_istream(struct git_istream *st) +{ + return st->vtbl->close(st); +} + +ssize_t read_istream(struct git_istream *st, char *buf, size_t sz) +{ + return st->vtbl->read(st, buf, sz); +} + +static enum input_source istream_source(const unsigned char *sha1, + enum object_type *type, + struct object_info *oi) +{ + unsigned long size; + int status; + + oi->sizep = &size; + status = sha1_object_info_extended(sha1, oi); + if (status < 0) + return stream_error; + *type = status; + + switch (oi->whence) { + case OI_LOOSE: + return loose; + case OI_PACKED: + if (!oi->u.packed.is_delta && big_file_threshold <= size) + return pack_non_delta; + /* fallthru */ + default: + return incore; + } +} + +struct git_istream *open_istream(const unsigned char *sha1, + enum object_type *type, + unsigned long *size) +{ + struct git_istream *st; + struct object_info oi; + const unsigned char *real = lookup_replace_object(sha1); + enum input_source src = istream_source(real, type, &oi); + + if (src < 0) + return NULL; + + st = xmalloc(sizeof(*st)); + if (open_istream_tbl[src](st, &oi, real, type)) { + if (open_istream_incore(st, &oi, real, type)) { + free(st); + return NULL; + } + } + *size = st->size; + return st; +} + + +/***************************************************************** + * + * Common helpers + * + *****************************************************************/ + +static void close_deflated_stream(struct git_istream *st) +{ + if (st->z_state == z_used) + git_inflate_end(&st->z); +} + + +/***************************************************************** + * + * Loose object stream + * + *****************************************************************/ + +static read_method_decl(loose) +{ + size_t total_read = 0; + + switch (st->z_state) { + case z_done: + return 0; + case z_error: + return -1; + default: + break; + } + + if (st->u.loose.hdr_used < st->u.loose.hdr_avail) { + size_t to_copy = st->u.loose.hdr_avail - st->u.loose.hdr_used; + if (sz < to_copy) + to_copy = sz; + memcpy(buf, st->u.loose.hdr + st->u.loose.hdr_used, to_copy); + st->u.loose.hdr_used += to_copy; + total_read += to_copy; + } + + while (total_read < sz) { + int status; + + st->z.next_out = (unsigned char *)buf + total_read; + st->z.avail_out = sz - total_read; + status = git_inflate(&st->z, Z_FINISH); + + total_read = st->z.next_out - (unsigned char *)buf; + + if (status == Z_STREAM_END) { + git_inflate_end(&st->z); + st->z_state = z_done; + break; + } + if (status != Z_OK && status != Z_BUF_ERROR) { + git_inflate_end(&st->z); + st->z_state = z_error; + return -1; + } + } + return total_read; +} + +static close_method_decl(loose) +{ + close_deflated_stream(st); + munmap(st->u.loose.mapped, st->u.loose.mapsize); + return 0; +} + +static struct stream_vtbl loose_vtbl = { + close_istream_loose, + read_istream_loose, +}; + +static open_method_decl(loose) +{ + st->u.loose.mapped = map_sha1_file(sha1, &st->u.loose.mapsize); + if (!st->u.loose.mapped) + return -1; + if (unpack_sha1_header(&st->z, + st->u.loose.mapped, + st->u.loose.mapsize, + st->u.loose.hdr, + sizeof(st->u.loose.hdr)) < 0) { + git_inflate_end(&st->z); + munmap(st->u.loose.mapped, st->u.loose.mapsize); + return -1; + } + + parse_sha1_header(st->u.loose.hdr, &st->size); + st->u.loose.hdr_used = strlen(st->u.loose.hdr) + 1; + st->u.loose.hdr_avail = st->z.total_out; + st->z_state = z_used; + + st->vtbl = &loose_vtbl; + return 0; +} + + +/***************************************************************** + * + * Non-delta packed object stream + * + *****************************************************************/ + +static read_method_decl(pack_non_delta) +{ + size_t total_read = 0; + + switch (st->z_state) { + case z_unused: + memset(&st->z, 0, sizeof(st->z)); + git_inflate_init(&st->z); + st->z_state = z_used; + break; + case z_done: + return 0; + case z_error: + return -1; + case z_used: + break; + } + + while (total_read < sz) { + int status; + struct pack_window *window = NULL; + unsigned char *mapped; + + mapped = use_pack(st->u.in_pack.pack, &window, + st->u.in_pack.pos, &st->z.avail_in); + + st->z.next_out = (unsigned char *)buf + total_read; + st->z.avail_out = sz - total_read; + st->z.next_in = mapped; + status = git_inflate(&st->z, Z_FINISH); + + st->u.in_pack.pos += st->z.next_in - mapped; + total_read = st->z.next_out - (unsigned char *)buf; + unuse_pack(&window); + + if (status == Z_STREAM_END) { + git_inflate_end(&st->z); + st->z_state = z_done; + break; + } + if (status != Z_OK && status != Z_BUF_ERROR) { + git_inflate_end(&st->z); + st->z_state = z_error; + return -1; + } + } + return total_read; +} + +static close_method_decl(pack_non_delta) +{ + close_deflated_stream(st); + return 0; +} + +static struct stream_vtbl pack_non_delta_vtbl = { + close_istream_pack_non_delta, + read_istream_pack_non_delta, +}; + +static open_method_decl(pack_non_delta) +{ + struct pack_window *window; + enum object_type in_pack_type; + + st->u.in_pack.pack = oi->u.packed.pack; + st->u.in_pack.pos = oi->u.packed.offset; + window = NULL; + + in_pack_type = unpack_object_header(st->u.in_pack.pack, + &window, + &st->u.in_pack.pos, + &st->size); + unuse_pack(&window); + switch (in_pack_type) { + default: + return -1; /* we do not do deltas for now */ + case OBJ_COMMIT: + case OBJ_TREE: + case OBJ_BLOB: + case OBJ_TAG: + break; + } + st->z_state = z_unused; + st->vtbl = &pack_non_delta_vtbl; + return 0; +} + + +/***************************************************************** + * + * In-core stream + * + *****************************************************************/ + +static close_method_decl(incore) +{ + free(st->u.incore.buf); + return 0; +} + +static read_method_decl(incore) +{ + size_t read_size = sz; + size_t remainder = st->size - st->u.incore.read_ptr; + + if (remainder <= read_size) + read_size = remainder; + if (read_size) { + memcpy(buf, st->u.incore.buf + st->u.incore.read_ptr, read_size); + st->u.incore.read_ptr += read_size; + } + return read_size; +} + +static struct stream_vtbl incore_vtbl = { + close_istream_incore, + read_istream_incore, +}; + +static open_method_decl(incore) +{ + st->u.incore.buf = read_sha1_file_extended(sha1, type, &st->size, 0); + st->u.incore.read_ptr = 0; + st->vtbl = &incore_vtbl; + + return st->u.incore.buf ? 0 : -1; +} diff --git a/streaming.h b/streaming.h new file mode 100644 index 0000000000..18cbe68ac1 --- /dev/null +++ b/streaming.h @@ -0,0 +1,15 @@ +/* + * Copyright (c) 2011, Google Inc. + */ +#ifndef STREAMING_H +#define STREAMING_H 1 +#include "cache.h" + +/* opaque */ +struct git_istream; + +extern struct git_istream *open_istream(const unsigned char *, enum object_type *, unsigned long *); +extern int close_istream(struct git_istream *); +extern ssize_t read_istream(struct git_istream *, char *, size_t); + +#endif /* STREAMING_H */ |