Allow the user to control the verbosity of merge-recursive.

diff --git a/sha1_file.c b/sha1_file.c
index 8de8ce0a728bb5df75557d85c2ad0d55648af90d..1b1c0f7b4dc814764ead5ba1af77070ed381110c 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -22,6 +22,12 @@
 #endif
 #endif
 
+#ifdef NO_C99_FORMAT
+#define SZ_FMT "lu"
+#else
+#define SZ_FMT "zu"
+#endif
+
 const unsigned char null_sha1[20];
 
 static unsigned int sha1_file_open_flag = O_NOATIME;
@@ -355,10 +361,8 @@ static void read_info_alternates(const char * relative_base, int depth)
                close(fd);
                return;
        }
-       map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+       map = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
        close(fd);
-       if (map == MAP_FAILED)
-               return;
 
        link_alt_odb_entries(map, map + st.st_size, '\n', relative_base, depth);
 
@@ -409,9 +413,9 @@ struct packed_git *packed_git;
 void pack_report()
 {
        fprintf(stderr,
-               "pack_report: getpagesize()            = %10lu\n"
-               "pack_report: core.packedGitWindowSize = %10lu\n"
-               "pack_report: core.packedGitLimit      = %10lu\n",
+               "pack_report: getpagesize()            = %10" SZ_FMT "\n"
+               "pack_report: core.packedGitWindowSize = %10" SZ_FMT "\n"
+               "pack_report: core.packedGitLimit      = %10" SZ_FMT "\n",
                page_size,
                packed_git_window_size,
                packed_git_limit);
@@ -419,7 +423,8 @@ void pack_report()
                "pack_report: pack_used_ctr            = %10u\n"
                "pack_report: pack_mmap_calls          = %10u\n"
                "pack_report: pack_open_windows        = %10u / %10u\n"
-               "pack_report: pack_mapped              = %10lu / %10lu\n",
+               "pack_report: pack_mapped              = "
+                       "%10" SZ_FMT " / %10" SZ_FMT "\n",
                pack_used_ctr,
                pack_mmap_calls,
                pack_open_windows, peak_pack_open_windows,
@@ -442,10 +447,8 @@ static int check_packed_git_idx(const char *path, unsigned long *idx_size_,
                return -1;
        }
        idx_size = st.st_size;
-       idx_map = mmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd, 0);
+       idx_map = xmmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd, 0);
        close(fd);
-       if (idx_map == MAP_FAILED)
-               return -1;
 
        index = idx_map;
        *idx_map_ = idx_map;
@@ -522,6 +525,13 @@ static int unuse_one_window(struct packed_git *current)
        return 0;
 }
 
+void release_pack_memory(size_t need)
+{
+       size_t cur = pack_mapped;
+       while (need >= (cur - pack_mapped) && unuse_one_window(NULL))
+               ; /* nothing */
+}
+
 void unuse_pack(struct pack_window **w_cursor)
 {
        struct pack_window *w = *w_cursor;
@@ -537,6 +547,7 @@ static void open_packed_git(struct packed_git *p)
        struct pack_header hdr;
        unsigned char sha1[20];
        unsigned char *idx_sha1;
+       long fd_flag;
 
        p->pack_fd = open(p->pack_name, O_RDONLY);
        if (p->pack_fd < 0 || fstat(p->pack_fd, &st))
@@ -550,8 +561,19 @@ static void open_packed_git(struct packed_git *p)
        } else if (p->pack_size != st.st_size)
                die("packfile %s size changed", p->pack_name);
 
+       /* We leave these file descriptors open with sliding mmap;
+        * there is no point keeping them open across exec(), though.
+        */
+       fd_flag = fcntl(p->pack_fd, F_GETFD, 0);
+       if (fd_flag < 0)
+               die("cannot determine file descriptor flags");
+       fd_flag |= FD_CLOEXEC;
+       if (fcntl(p->pack_fd, F_SETFD, fd_flag) == -1)
+               die("cannot set FD_CLOEXEC");
+
        /* Verify we recognize this pack file format. */
-       read_or_die(p->pack_fd, &hdr, sizeof(hdr));
+       if (read_in_full(p->pack_fd, &hdr, sizeof(hdr)) != sizeof(hdr))
+               die("file %s is far too short to be a packfile", p->pack_name);
        if (hdr.hdr_signature != htonl(PACK_SIGNATURE))
                die("file %s is not a GIT packfile", p->pack_name);
        if (!pack_version_ok(hdr.hdr_version))
@@ -567,7 +589,8 @@ static void open_packed_git(struct packed_git *p)
                        num_packed_objects(p));
        if (lseek(p->pack_fd, p->pack_size - sizeof(sha1), SEEK_SET) == -1)
                die("end of packfile %s is unavailable", p->pack_name);
-       read_or_die(p->pack_fd, sha1, sizeof(sha1));
+       if (read_in_full(p->pack_fd, sha1, sizeof(sha1)) != sizeof(sha1))
+               die("packfile %s signature is unavailable", p->pack_name);
        idx_sha1 = ((unsigned char *)p->index_base) + p->index_size - 40;
        if (hashcmp(sha1, idx_sha1))
                die("packfile %s does not match index", p->pack_name);
@@ -623,7 +646,7 @@ unsigned char* use_pack(struct packed_git *p,
                        while (packed_git_limit < pack_mapped
                                && unuse_one_window(p))
                                ; /* nothing */
-                       win->base = mmap(NULL, win->len,
+                       win->base = xmmap(NULL, win->len,
                                PROT_READ, MAP_PRIVATE,
                                p->pack_fd, win->offset);
                        if (win->base == MAP_FAILED)
@@ -821,10 +844,8 @@ void *map_sha1_file(const unsigned char *sha1, unsigned long *size)
                 */
                sha1_file_open_flag = 0;
        }
-       map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+       map = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
        close(fd);
-       if (map == MAP_FAILED)
-               return NULL;
        *size = st.st_size;
        return map;
 }
@@ -1599,20 +1620,8 @@ int move_temp_to_file(const char *tmpfile, const char *filename)
 
 static int write_buffer(int fd, const void *buf, size_t len)
 {
-       while (len) {
-               ssize_t size;
-
-               size = write(fd, buf, len);
-               if (!size)
-                       return error("file write: disk full");
-               if (size < 0) {
-                       if (errno == EINTR || errno == EAGAIN)
-                               continue;
-                       return error("file write error (%s)", strerror(errno));
-               }
-               len -= size;
-               buf = (char *) buf + size;
-       }
+       if (write_in_full(fd, buf, len) < 0)
+               return error("file write error (%s)", strerror(errno));
        return 0;
 }
 
@@ -1857,7 +1866,7 @@ int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
                        if (ret != Z_OK)
                                break;
                }
-               size = read(fd, buffer + *bufposn, bufsize - *bufposn);
+               size = xread(fd, buffer + *bufposn, bufsize - *bufposn);
                if (size <= 0) {
                        close(local);
                        unlink(tmpfile);
@@ -1980,10 +1989,8 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, con
 
        buf = "";
        if (size)
-               buf = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+               buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
        close(fd);
-       if (buf == MAP_FAILED)
-               return -1;
 
        if (!type)
                type = blob_type;