diff options
Diffstat (limited to 'read-cache.c')
| -rw-r--r-- | read-cache.c | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/read-cache.c b/read-cache.c index b6982eac41..c54a611877 100644 --- a/read-cache.c +++ b/read-cache.c @@ -347,16 +347,18 @@ int add_file_to_index(const char *path, int verbose) ce->ce_mode = create_ce_mode(st.st_mode); if (!trust_executable_bit) { /* If there is an existing entry, pick the mode bits - * from it. + * from it, otherwise assume unexecutable. */ int pos = cache_name_pos(path, namelen); if (pos >= 0) ce->ce_mode = active_cache[pos]->ce_mode; + else if (S_ISREG(st.st_mode)) + ce->ce_mode = create_ce_mode(S_IFREG | 0666); } if (index_path(ce->sha1, path, &st, 1)) die("unable to index file %s", path); - if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD)) + if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE)) die("unable to add %s to index",path); if (verbose) printf("add '%s'\n", path); @@ -515,7 +517,7 @@ static int has_dir_name(const struct cache_entry *ce, int pos, int ok_to_replace pos = cache_name_pos(name, ntohs(create_ce_flags(len, stage))); if (pos >= 0) { retval = -1; - if (ok_to_replace) + if (!ok_to_replace) break; remove_cache_entry_at(pos); continue; @@ -607,7 +609,7 @@ int add_cache_entry(struct cache_entry *ce, int option) if (!skip_df_check && check_file_directory_conflict(ce, pos, ok_to_replace)) { if (!ok_to_replace) - return -1; + return error("'%s' appears as both a file and as a directory", ce->name); pos = cache_name_pos(ce->name, ntohs(ce->ce_flags)); pos = -pos-1; } @@ -791,16 +793,16 @@ int read_cache_from(const char *path) die("index file open failed (%s)", strerror(errno)); } - cache_mmap = MAP_FAILED; if (!fstat(fd, &st)) { cache_mmap_size = st.st_size; errno = EINVAL; if (cache_mmap_size >= sizeof(struct cache_header) + 20) - cache_mmap = mmap(NULL, cache_mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); - } + cache_mmap = xmmap(NULL, cache_mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); + else + die("index file smaller than expected"); + } else + die("cannot stat the open index (%s)", strerror(errno)); close(fd); - if (cache_mmap == MAP_FAILED) - die("index file mmap failed (%s)", strerror(errno)); hdr = cache_mmap; if (verify_hdr(hdr, cache_mmap_size) < 0) @@ -842,6 +844,23 @@ unmap: die("index file corrupt"); } +int discard_cache(void) +{ + int ret; + + active_nr = active_cache_changed = 0; + index_file_timestamp = 0; + cache_tree_free(&active_cache_tree); + if (cache_mmap == NULL) + return 0; + ret = munmap(cache_mmap, cache_mmap_size); + cache_mmap = NULL; + cache_mmap_size = 0; + + /* no need to throw away allocated active_cache */ + return ret; +} + #define WRITE_BUFFER_SIZE 8192 static unsigned char write_buffer[WRITE_BUFFER_SIZE]; static unsigned long write_buffer_len; @@ -851,7 +870,7 @@ static int ce_write_flush(SHA_CTX *context, int fd) unsigned int buffered = write_buffer_len; if (buffered) { SHA1_Update(context, write_buffer, buffered); - if (write(fd, write_buffer, buffered) != buffered) + if (write_in_full(fd, write_buffer, buffered) != buffered) return -1; write_buffer_len = 0; } @@ -900,7 +919,7 @@ static int ce_flush(SHA_CTX *context, int fd) /* Flush first if not enough space for SHA1 signature */ if (left + 20 > WRITE_BUFFER_SIZE) { - if (write(fd, write_buffer, left) != left) + if (write_in_full(fd, write_buffer, left) != left) return -1; left = 0; } @@ -908,7 +927,7 @@ static int ce_flush(SHA_CTX *context, int fd) /* Append the SHA1 signature at the end */ SHA1_Final(write_buffer + left, context); left += 20; - return (write(fd, write_buffer, left) != left) ? -1 : 0; + return (write_in_full(fd, write_buffer, left) != left) ? -1 : 0; } static void ce_smudge_racily_clean_entry(struct cache_entry *ce) @@ -991,7 +1010,7 @@ int write_cache(int newfd, struct cache_entry **cache, int entries) if (data && !write_index_ext_header(&c, newfd, CACHE_EXT_TREE, sz) && !ce_write(&c, newfd, data, sz)) - ; + free(data); else { free(data); return -1; |