Allow safe_fname() to tweak up to two name at a time.

[rsync/rsync.git] / generator.c

diff --git a/generator.c b/generator.c
index ffd7a0d..33fcf2a 100644 (file)
--- a/generator.c
+++ b/generator.c
@@ -162,6 +162,7 @@ static void sum_sizes_sqroot(struct sum_struct *sum, uint64 len)
                        c >>= 1;
                } while (c >= 8);       /* round to multiple of 8 */
                blength = MAX(blength, BLOCK_SIZE);
+               blength = MIN(blength, MAX_MAP_SIZE);
        }
 
        if (protocol_version < 27) {
@@ -206,19 +207,25 @@ static void sum_sizes_sqroot(struct sum_struct *sum, uint64 len)
  *
  * Generate approximately one checksum every block_len bytes.
  */
-static void generate_and_send_sums(struct map_struct *buf, OFF_T len, int f_out)
+static void generate_and_send_sums(int fd, OFF_T len, int f_out)
 {
        size_t i;
+       struct map_struct *mapbuf;
        struct sum_struct sum;
        OFF_T offset = 0;
 
        sum_sizes_sqroot(&sum, len);
 
+       if (len > 0)
+               mapbuf = map_file(fd, len, sum.blength);
+       else
+               mapbuf = NULL;
+
        write_sum_head(f_out, &sum);
 
        for (i = 0; i < sum.count; i++) {
                unsigned int n1 = MIN(len, sum.blength);
-               char *map = map_ptr(buf, offset, n1);
+               char *map = map_ptr(mapbuf, offset, n1);
                uint32 sum1 = get_checksum1(map, n1);
                char sum2[SUM_LENGTH];
 
@@ -235,6 +242,9 @@ static void generate_and_send_sums(struct map_struct *buf, OFF_T len, int f_out)
                len -= n1;
                offset += n1;
        }
+
+       if (mapbuf)
+               unmap_file(mapbuf);
 }
 
 
@@ -252,7 +262,6 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
 {
        int fd;
        STRUCT_STAT st;
-       struct map_struct *mapbuf;
        int statret;
        char *fnamecmp;
        char fnamecmpbuf[MAXPATHLEN];
@@ -282,9 +291,8 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                return;
        }
 
-       if (statret == 0 &&
-           !preserve_perms &&
-           (S_ISDIR(st.st_mode) == S_ISDIR(file->mode))) {
+       if (statret == 0 && !preserve_perms
+           && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) {
                /* if the file exists already and we aren't perserving
                 * permissions then act as though the remote end sent
                 * us the file permissions we already have */
@@ -327,9 +335,6 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                return;
        }
 
-       if (read_batch)
-               return;
-
        if (preserve_links && S_ISLNK(file->mode)) {
 #if SUPPORT_LINKS
                char lnk[MAXPATHLEN];
@@ -437,7 +442,7 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                        return;
                if (errno == ENOENT) {
                        write_int(f_out,i);
-                       if (!dry_run)
+                       if (!dry_run && !read_batch)
                                write_sum_head(f_out, NULL);
                } else if (verbose > 1) {
                        rsyserr(FERROR, errno,
@@ -456,7 +461,7 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                if (preserve_hard_links && hard_link_check(file, HL_SKIP))
                        return;
                write_int(f_out,i);
-               if (!dry_run)
+               if (!dry_run && !read_batch)
                        write_sum_head(f_out, NULL);
                return;
        }
@@ -480,7 +485,7 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                return;
        }
 
-       if (dry_run) {
+       if (dry_run || read_batch) {
                write_int(f_out,i);
                return;
        }
@@ -505,11 +510,6 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                return;
        }
 
-       if (st.st_size > 0)
-               mapbuf = map_file(fd,st.st_size);
-       else
-               mapbuf = NULL;
-
        if (verbose > 3) {
                rprintf(FINFO,"gen mapped %s of size %.0f\n", fnamecmp,
                        (double)st.st_size);
@@ -519,11 +519,9 @@ static void recv_generator(char *fname, struct file_struct *file, int i,
                rprintf(FINFO, "generating and sending sums for %d\n", i);
 
        write_int(f_out,i);
-       generate_and_send_sums(mapbuf, st.st_size, f_out);
+       generate_and_send_sums(fd, st.st_size, f_out);
 
        close(fd);
-       if (mapbuf)
-               unmap_file(mapbuf);
 }