From: Junio C Hamano Date: Thu, 31 May 2007 07:09:26 +0000 (-0700) Subject: Merge branch 'maint-1.5.1' into maint X-Git-Tag: v1.5.2.1~4 X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/8e29f903eb366b2d2e846dc35ec4510d2cb263ad?ds=inline;hp=-c Merge branch 'maint-1.5.1' into maint * maint-1.5.1: git-config: Improve documentation of git-config file handling git-config: Various small fixes to asciidoc documentation decode_85(): fix missing return. fix signed range problems with hex conversions --- 8e29f903eb366b2d2e846dc35ec4510d2cb263ad diff --combined cache.h index 4204bc168c,bea8cad5b2..5dff2f1d73 --- a/cache.h +++ b/cache.h @@@ -24,25 -24,6 +24,25 @@@ #define DTYPE(de) DT_UNKNOWN #endif +/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ +#define S_IFINVALID 0030000 + +/* + * A "directory link" is a link to another git directory. + * + * The value 0160000 is not normally a valid mode, and + * also just happens to be S_IFDIR + S_IFLNK + * + * NOTE! We *really* shouldn't depend on the S_IFxxx macros + * always having the same values everywhere. We should use + * our internal git values for these things, and then we can + * translate that to the OS-specific value. It just so + * happens that everybody shares the same bit representation + * in the UNIX world (and apparently wider too..) + */ +#define S_IFDIRLNK 0160000 +#define S_ISDIRLNK(m) (((m) & S_IFMT) == S_IFDIRLNK) + /* * Intensive research over the course of many years has shown that * port 9418 is totally unused by anything else. Or @@@ -123,8 -104,6 +123,8 @@@ static inline unsigned int create_ce_mo { if (S_ISLNK(mode)) return htonl(S_IFLNK); + if (S_ISDIR(mode) || S_ISDIRLNK(mode)) + return htonl(S_IFDIRLNK); return htonl(S_IFREG | ce_permissions(mode)); } static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode) @@@ -142,41 -121,14 +142,41 @@@ } #define canon_mode(mode) \ (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \ - S_ISLNK(mode) ? S_IFLNK : S_IFDIR) + S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFDIRLNK) #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7) -extern struct cache_entry **active_cache; -extern unsigned int active_nr, active_alloc, active_cache_changed; -extern struct cache_tree *active_cache_tree; -extern int cache_errno; +struct index_state { + struct cache_entry **cache; + unsigned int cache_nr, cache_alloc, cache_changed; + struct cache_tree *cache_tree; + time_t timestamp; + void *mmap; + size_t mmap_size; +}; + +extern struct index_state the_index; + +#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS +#define active_cache (the_index.cache) +#define active_nr (the_index.cache_nr) +#define active_alloc (the_index.cache_alloc) +#define active_cache_changed (the_index.cache_changed) +#define active_cache_tree (the_index.cache_tree) + +#define read_cache() read_index(&the_index) +#define read_cache_from(path) read_index_from(&the_index, (path)) +#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd)) +#define discard_cache() discard_index(&the_index) +#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) +#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) +#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) +#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) +#define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose)) +#define refresh_cache(flags) refresh_index(&the_index, flags) +#define ce_match_stat(ce, st, really) ie_match_stat(&the_index, (ce), (st), (really)) +#define ce_modified(ce, st, really) ie_modified(&the_index, (ce), (st), (really)) +#endif enum object_type { OBJ_BAD = -1, @@@ -200,9 -152,6 +200,9 @@@ #define CONFIG_ENVIRONMENT "GIT_CONFIG" #define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL" #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" +#define GITATTRIBUTES_FILE ".gitattributes" +#define INFOATTRIBUTES_FILE "info/attributes" +#define ATTRIBUTE_MACRO_PREFIX "[attr]" extern int is_bare_repository_cfg; extern int is_bare_repository(void); @@@ -226,23 -175,23 +226,23 @@@ extern void verify_non_filename(const c #define alloc_nr(x) (((x)+16)*3/2) /* Initialize and use the cache information */ -extern int read_cache(void); -extern int read_cache_from(const char *path); -extern int write_cache(int newfd, struct cache_entry **cache, int entries); -extern int discard_cache(void); +extern int read_index(struct index_state *); +extern int read_index_from(struct index_state *, const char *path); +extern int write_index(struct index_state *, int newfd); +extern int discard_index(struct index_state *); extern int verify_path(const char *path); -extern int cache_name_pos(const char *name, int namelen); +extern int index_name_pos(struct index_state *, const char *name, int namelen); #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ -extern int add_cache_entry(struct cache_entry *ce, int option); +extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really); -extern int remove_cache_entry_at(int pos); -extern int remove_file_from_cache(const char *path); -extern int add_file_to_index(const char *path, int verbose); +extern int remove_index_entry_at(struct index_state *, int pos); +extern int remove_file_from_index(struct index_state *, const char *path); +extern int add_file_to_index(struct index_state *, const char *path, int verbose); extern int ce_same_name(struct cache_entry *a, struct cache_entry *b); -extern int ce_match_stat(struct cache_entry *ce, struct stat *st, int); -extern int ce_modified(struct cache_entry *ce, struct stat *st, int); +extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, int); +extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, int); extern int ce_path_match(const struct cache_entry *ce, const char **pathspec); extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path); extern int read_pipe(int fd, char** return_buf, unsigned long* return_size); @@@ -254,21 -203,15 +254,21 @@@ extern void fill_stat_cache_info(struc #define REFRESH_UNMERGED 0x0002 /* allow unmerged */ #define REFRESH_QUIET 0x0004 /* be quiet about it */ #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */ -extern int refresh_cache(unsigned int flags); +extern int refresh_index(struct index_state *, unsigned int flags); struct lock_file { struct lock_file *next; + pid_t owner; char on_list; char filename[PATH_MAX]; }; extern int hold_lock_file_for_update(struct lock_file *, const char *path, int); extern int commit_lock_file(struct lock_file *); + +extern int hold_locked_index(struct lock_file *, int); +extern int commit_locked_index(struct lock_file *); +extern void set_alternate_index_output(const char *); + extern void rollback_lock_file(struct lock_file *); extern int delete_ref(const char *, const unsigned char *sha1); @@@ -359,8 -302,8 +359,8 @@@ extern int legacy_loose_object(unsigne extern int has_pack_file(const unsigned char *sha1); extern int has_pack_index(const unsigned char *sha1); - extern signed char hexval_table[256]; - static inline unsigned int hexval(unsigned int c) + extern const signed char hexval_table[256]; + static inline unsigned int hexval(unsigned char c) { return hexval_table[c]; } @@@ -370,7 -313,6 +370,7 @@@ #define DEFAULT_ABBREV 7 extern int get_sha1(const char *str, unsigned char *sha1); +extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode); extern int get_sha1_hex(const char *hex, unsigned char *sha1); extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ extern int read_ref(const char *filename, unsigned char *sha1); @@@ -389,7 -331,7 +389,7 @@@ extern void *read_object_with_reference unsigned long *size, unsigned char *sha1_ret); -enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT }; +enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT, DATE_LOCAL }; const char *show_date(unsigned long time, int timezone, enum date_mode mode); const char *show_rfc2822_date(unsigned long time, int timezone); int parse_date(const char *date, char *buf, int bufsize); @@@ -409,8 -351,7 +409,8 @@@ struct checkout refresh_cache:1; }; -extern int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath); +extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); +extern int has_symlink_leading_path(const char *name, char *last_symlink); extern struct alternate_object_database { struct alternate_object_database *next; @@@ -431,12 -372,11 +431,12 @@@ struct pack_window extern struct packed_git { struct packed_git *next; struct pack_window *windows; - const void *index_data; - off_t index_size; off_t pack_size; - time_t mtime; + const void *index_data; + size_t index_size; + uint32_t num_objects; int index_version; + time_t mtime; int pack_fd; int pack_local; unsigned char sha1[20]; @@@ -487,11 -427,11 +487,11 @@@ extern void pack_report(void) extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *); extern void unuse_pack(struct pack_window **); extern struct packed_git *add_packed_git(const char *, int, int); -extern uint32_t num_packed_objects(const struct packed_git *p); -extern int nth_packed_object_sha1(const struct packed_git *, uint32_t, unsigned char*); +extern const unsigned char *nth_packed_object_sha1(const struct packed_git *, uint32_t); 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_gently(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 *); /* Dumb servers support */ @@@ -532,11 -472,14 +532,11 @@@ int decode_85(char *dst, const char *li void encode_85(char *buf, const unsigned char *data, int bytes); /* alloc.c */ -struct blob; -struct tree; -struct commit; -struct tag; -extern struct blob *alloc_blob_node(void); -extern struct tree *alloc_tree_node(void); -extern struct commit *alloc_commit_node(void); -extern struct tag *alloc_tag_node(void); +extern void *alloc_blob_node(void); +extern void *alloc_tree_node(void); +extern void *alloc_commit_node(void); +extern void *alloc_tag_node(void); +extern void *alloc_object_node(void); extern void alloc_report(void); /* trace.c */ @@@ -546,11 -489,7 +546,11 @@@ extern void trace_printf(const char *fo extern void trace_argv_printf(const char **argv, int count, const char *format, ...); /* convert.c */ -extern int convert_to_git(const char *path, char **bufp, unsigned long *sizep); -extern int convert_to_working_tree(const char *path, char **bufp, unsigned long *sizep); +extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep); +extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep); +extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size); + +/* match-trees.c */ +void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int); #endif /* CACHE_H */ diff --combined sha1_file.c index be991ed22a,ae9bd1fc2f..c2f807f4c2 --- a/sha1_file.c +++ b/sha1_file.c @@@ -13,7 -13,6 +13,7 @@@ #include "commit.h" #include "tag.h" #include "tree.h" +#include "refs.h" #ifndef O_NOATIME #if defined(__linux__) && (defined(__i386__) || defined(__PPC__)) @@@ -33,7 -32,7 +33,7 @@@ const unsigned char null_sha1[20] static unsigned int sha1_file_open_flag = O_NOATIME; - signed char hexval_table[256] = { + const signed char hexval_table[256] = { -1, -1, -1, -1, -1, -1, -1, -1, /* 00-07 */ -1, -1, -1, -1, -1, -1, -1, -1, /* 08-0f */ -1, -1, -1, -1, -1, -1, -1, -1, /* 10-17 */ @@@ -438,7 -437,7 +438,7 @@@ static int check_packed_git_idx(const c void *idx_map; struct pack_idx_header *hdr; size_t idx_size; - uint32_t nr, i, *index; + uint32_t version, nr, i, *index; int fd = open(path, O_RDONLY); struct stat st; @@@ -456,23 -455,21 +456,23 @@@ idx_map = xmmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd, 0); close(fd); - /* a future index format would start with this, as older git - * binaries would fail the non-monotonic index check below. - * give a nicer warning to the user if we can. - */ hdr = idx_map; if (hdr->idx_signature == htonl(PACK_IDX_SIGNATURE)) { - munmap(idx_map, idx_size); - return error("index file %s is a newer version" - " and is not supported by this binary" - " (try upgrading GIT to a newer version)", - path); - } + version = ntohl(hdr->idx_version); + if (version < 2 || version > 2) { + munmap(idx_map, idx_size); + return error("index file %s is version %d" + " and is not supported by this binary" + " (try upgrading GIT to a newer version)", + path, version); + } + } else + version = 1; nr = 0; index = idx_map; + if (version > 1) + index += 2; /* skip index header */ for (i = 0; i < 256; i++) { uint32_t n = ntohl(index[i]); if (n < nr) { @@@ -482,51 -479,21 +482,51 @@@ nr = n; } - /* - * Total size: - * - 256 index entries 4 bytes each - * - 24-byte entries * nr (20-byte sha1 + 4-byte offset) - * - 20-byte SHA1 of the packfile - * - 20-byte SHA1 file checksum - */ - if (idx_size != 4*256 + nr * 24 + 20 + 20) { - munmap(idx_map, idx_size); - return error("wrong index file size in %s", path); + if (version == 1) { + /* + * Total size: + * - 256 index entries 4 bytes each + * - 24-byte entries * nr (20-byte sha1 + 4-byte offset) + * - 20-byte SHA1 of the packfile + * - 20-byte SHA1 file checksum + */ + if (idx_size != 4*256 + nr * 24 + 20 + 20) { + munmap(idx_map, idx_size); + return error("wrong index file size in %s", path); + } + } else if (version == 2) { + /* + * Minimum size: + * - 8 bytes of header + * - 256 index entries 4 bytes each + * - 20-byte sha1 entry * nr + * - 4-byte crc entry * nr + * - 4-byte offset entry * nr + * - 20-byte SHA1 of the packfile + * - 20-byte SHA1 file checksum + * And after the 4-byte offset table might be a + * variable sized table containing 8-byte entries + * for offsets larger than 2^31. + */ + unsigned long min_size = 8 + 4*256 + nr*(20 + 4 + 4) + 20 + 20; + if (idx_size < min_size || idx_size > min_size + (nr - 1)*8) { + munmap(idx_map, idx_size); + return error("wrong index file size in %s", path); + } + if (idx_size != min_size) { + /* make sure we can deal with large pack offsets */ + off_t x = 0x7fffffffUL, y = 0xffffffffUL; + if (x > (x + 1) || y > (y + 1)) { + munmap(idx_map, idx_size); + return error("pack too large for current definition of off_t in %s", path); + } + } } - p->index_version = 1; + p->index_version = version; p->index_data = idx_map; p->index_size = idx_size; + p->num_objects = nr; return 0; } @@@ -638,11 -605,11 +638,11 @@@ static int open_packed_git_1(struct pac p->pack_name, ntohl(hdr.hdr_version)); /* Verify the pack matches its index. */ - if (num_packed_objects(p) != ntohl(hdr.hdr_entries)) + if (p->num_objects != ntohl(hdr.hdr_entries)) return error("packfile %s claims to have %u objects" - " while index size indicates %u objects", - p->pack_name, ntohl(hdr.hdr_entries), - num_packed_objects(p)); + " while index indicates %u objects", + p->pack_name, ntohl(hdr.hdr_entries), + p->num_objects); if (lseek(p->pack_fd, p->pack_size - sizeof(sha1), SEEK_SET) == -1) return error("end of packfile %s is unavailable", p->pack_name); if (read_in_full(p->pack_fd, sha1, sizeof(sha1)) != sizeof(sha1)) @@@ -1161,43 -1128,6 +1161,43 @@@ static void *unpack_sha1_file(void *map return unpack_sha1_rest(&stream, hdr, *size, sha1); } +unsigned long get_size_from_delta(struct packed_git *p, + struct pack_window **w_curs, + off_t curpos) +{ + const unsigned char *data; + unsigned char delta_head[20], *in; + z_stream stream; + int st; + + memset(&stream, 0, sizeof(stream)); + stream.next_out = delta_head; + stream.avail_out = sizeof(delta_head); + + inflateInit(&stream); + do { + in = use_pack(p, w_curs, curpos, &stream.avail_in); + stream.next_in = in; + st = inflate(&stream, Z_FINISH); + curpos += stream.next_in - in; + } while ((st == Z_OK || st == Z_BUF_ERROR) && + stream.total_out < sizeof(delta_head)); + inflateEnd(&stream); + if ((st != Z_STREAM_END) && stream.total_out != sizeof(delta_head)) + die("delta data unpack-initial failed"); + + /* Examine the initial part of the delta to figure out + * the result size. + */ + data = delta_head; + + /* ignore base size */ + get_delta_hdr_size(&data, delta_head+sizeof(delta_head)); + + /* Read the result size */ + return get_delta_hdr_size(&data, delta_head+sizeof(delta_head)); +} + static off_t get_delta_base(struct packed_git *p, struct pack_window **w_curs, off_t *curpos, @@@ -1219,7 -1149,7 +1219,7 @@@ base_offset = c & 127; while (c & 128) { base_offset += 1; - if (!base_offset || base_offset & ~(~0UL >> 7)) + if (!base_offset || MSB(base_offset, 7)) die("offset value overflow for delta base object"); c = base_info[used++]; base_offset = (base_offset << 7) + (c & 127); @@@ -1261,8 -1191,40 +1261,8 @@@ static int packed_delta_info(struct pac * based on a base with a wrong size. This saves tons of * inflate() calls. */ - if (sizep) { - const unsigned char *data; - unsigned char delta_head[20], *in; - z_stream stream; - int st; - - memset(&stream, 0, sizeof(stream)); - stream.next_out = delta_head; - stream.avail_out = sizeof(delta_head); - - inflateInit(&stream); - do { - in = use_pack(p, w_curs, curpos, &stream.avail_in); - stream.next_in = in; - st = inflate(&stream, Z_FINISH); - curpos += stream.next_in - in; - } while ((st == Z_OK || st == Z_BUF_ERROR) - && stream.total_out < sizeof(delta_head)); - inflateEnd(&stream); - if ((st != Z_STREAM_END) && - stream.total_out != sizeof(delta_head)) - die("delta data unpack-initial failed"); - - /* Examine the initial part of the delta to figure out - * the result size. - */ - data = delta_head; - - /* ignore base size */ - get_delta_hdr_size(&data, delta_head+sizeof(delta_head)); - - /* Read the result size */ - *sizep = get_delta_hdr_size(&data, delta_head+sizeof(delta_head)); - } + if (sizep) + *sizep = get_size_from_delta(p, w_curs, curpos); return type; } @@@ -1564,60 -1526,38 +1564,60 @@@ void *unpack_entry(struct packed_git *p return data; } -uint32_t num_packed_objects(const struct packed_git *p) +const unsigned char *nth_packed_object_sha1(const struct packed_git *p, + uint32_t n) { - /* See check_packed_git_idx() */ - return (uint32_t)((p->index_size - 20 - 20 - 4*256) / 24); + const unsigned char *index = p->index_data; + if (n >= p->num_objects) + return NULL; + index += 4 * 256; + if (p->index_version == 1) { + return index + 24 * n + 4; + } else { + index += 8; + return index + 20 * n; + } } -int nth_packed_object_sha1(const struct packed_git *p, uint32_t n, - unsigned char* sha1) +static off_t nth_packed_object_offset(const struct packed_git *p, uint32_t n) { const unsigned char *index = p->index_data; index += 4 * 256; - if (num_packed_objects(p) <= n) - return -1; - hashcpy(sha1, index + 24 * n + 4); - return 0; + if (p->index_version == 1) { + return ntohl(*((uint32_t *)(index + 24 * n))); + } else { + uint32_t off; + index += 8 + p->num_objects * (20 + 4); + off = ntohl(*((uint32_t *)(index + 4 * n))); + if (!(off & 0x80000000)) + return off; + index += p->num_objects * 4 + (off & 0x7fffffff) * 8; + return (((uint64_t)ntohl(*((uint32_t *)(index + 0)))) << 32) | + ntohl(*((uint32_t *)(index + 4))); + } } off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *p) { const uint32_t *level1_ofs = p->index_data; - int hi = ntohl(level1_ofs[*sha1]); - int lo = ((*sha1 == 0x0) ? 0 : ntohl(level1_ofs[*sha1 - 1])); const unsigned char *index = p->index_data; + unsigned hi, lo; + if (p->index_version > 1) { + level1_ofs += 2; + index += 8; + } index += 4 * 256; + hi = ntohl(level1_ofs[*sha1]); + lo = ((*sha1 == 0x0) ? 0 : ntohl(level1_ofs[*sha1 - 1])); do { - int mi = (lo + hi) / 2; - int cmp = hashcmp(index + 24 * mi + 4, sha1); + unsigned mi = (lo + hi) / 2; + unsigned x = (p->index_version > 1) ? (mi * 20) : (mi * 24 + 4); + int cmp = hashcmp(index + x, sha1); if (!cmp) - return ntohl(*((uint32_t *)((char *)index + (24 * mi)))); + return nth_packed_object_offset(p, mi); if (cmp > 0) hi = mi; else @@@ -2276,7 -2216,7 +2276,7 @@@ int read_pipe(int fd, char** return_buf { char* buf = *return_buf; unsigned long size = *return_size; - int iret; + ssize_t iret; unsigned long off = 0; do { @@@ -2338,9 -2278,10 +2338,9 @@@ int index_fd(unsigned char *sha1, int f */ if ((type == OBJ_BLOB) && S_ISREG(st->st_mode)) { unsigned long nsize = size; - char *nbuf = buf; - if (convert_to_git(path, &nbuf, &nsize)) { - if (size) - munmap(buf, size); + char *nbuf = convert_to_git(path, buf, &nsize); + if (nbuf) { + munmap(buf, size); size = nsize; buf = nbuf; re_allocated = 1; @@@ -2392,8 -2333,6 +2392,8 @@@ int index_path(unsigned char *sha1, con path); free(target); break; + case S_IFDIR: + return resolve_gitlink_ref(path, "HEAD", sha1); default: return error("%s: unsupported file type", path); }