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preparing for release of 2.0.5
[rsync/rsync.git]
/
util.c
diff --git
a/util.c
b/util.c
index
cc39cdb
..
d9c87ec
100644
(file)
--- a/
util.c
+++ b/
util.c
@@
-60,44
+60,49
@@
struct map_struct *map_file(int fd,OFF_T len)
char *map_ptr(struct map_struct *map,OFF_T offset,int len)
{
char *map_ptr(struct map_struct *map,OFF_T offset,int len)
{
-
int nread = -2
;
+
int nread
;
- if (map->map)
- return map->map+offset;
+
if (map->map)
+
return map->map+offset;
- if (len == 0)
- return NULL;
+
if (len == 0)
+
return NULL;
- if (len > (map->size-offset))
- len = map->size-offset;
+
if (len > (map->size-offset))
+
len = map->size-offset;
- if (offset >= map->p_offset &&
- offset+len <= map->p_offset+map->p_len) {
- return (map->p + (offset - map->p_offset));
- }
+
if (offset >= map->p_offset &&
+
offset+len <= map->p_offset+map->p_len) {
+
return (map->p + (offset - map->p_offset));
+
}
- len = MAX(len,CHUNK_SIZE);
- if (len > (map->size-offset))
- len = map->size-offset;
+
len = MAX(len,CHUNK_SIZE);
+
if (len > (map->size-offset))
+
len = map->size-offset;
- if (len > map->p_size) {
- if (map->p) free(map->p);
- map->p = (char *)malloc(len);
- if (!map->p) out_of_memory("map_ptr");
- map->p_size = len;
- }
+
if (len > map->p_size) {
+
if (map->p) free(map->p);
+
map->p = (char *)malloc(len);
+
if (!map->p) out_of_memory("map_ptr");
+
map->p_size = len;
+
}
- if (do_lseek(map->fd,offset,SEEK_SET) != offset ||
- (nread=read(map->fd,map->p,len)) != len) {
- rprintf(FERROR,"EOF in map_ptr! (offset=%d len=%d nread=%d errno=%d)\n",
- (int)offset, len, nread, errno);
- exit_cleanup(1);
- }
+ map->p_offset = offset;
+ map->p_len = len;
- map->p_offset = offset;
- map->p_len = len;
+ if (do_lseek(map->fd,offset,SEEK_SET) != offset) {
+ rprintf(FERROR,"lseek failed in map_ptr\n");
+ exit_cleanup(1);
+ }
- return map->p;
+ if ((nread=read(map->fd,map->p,len)) != len) {
+ if (nread < 0) nread = 0;
+ /* the best we can do is zero the buffer - the file
+ has changed mid transfer! */
+ memset(map->p+nread, 0, len - nread);
+ }
+
+ return map->p;
}
}