git-rm: do not fail on already removed file.

diff --git a/read-cache.c b/read-cache.c
index 6bec833eecae934af1dce18683c70522481b002a..c54a61187711087b98138b9598db6353457e4df3 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -60,7 +60,7 @@ static int ce_compare_data(struct cache_entry *ce, struct stat *st)
        if (fd >= 0) {
                unsigned char sha1[20];
                if (!index_fd(sha1, fd, st, 0, NULL))
-                       match = memcmp(sha1, ce->sha1, 20);
+                       match = hashcmp(sha1, ce->sha1);
                /* index_fd() closed the file descriptor already */
        }
        return match;
@@ -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;
        }
@@ -744,7 +746,7 @@ static int verify_hdr(struct cache_header *hdr, unsigned long size)
        SHA1_Init(&c);
        SHA1_Update(&c, hdr, size - 20);
        SHA1_Final(sha1, &c);
-       if (memcmp(sha1, (char *) hdr + size - 20, 20))
+       if (hashcmp(sha1, (unsigned char *)hdr + size - 20))
                return error("bad index file sha1 signature");
        return 0;
 }
@@ -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 @@ int read_cache_from(const char *path)
        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;