heaps of cleanup in the io code.

we no longer use non-blocking IO, instead it uses select a lot more,
being careful to always allow for reading whenever a valid read fd is
available and chcking timeouts.

also split the file io calls into fileio.c

1 files changed, 0 insertions, 155 deletions

diff --git a/util.c b/util.c
index f54acd2c..b95e0b45 100644
--- a/util.c
+++ b/util.c
@@ -32,131 +32,6 @@ int num_waiting(int fd)
 }
 
 
-struct map_struct *map_file(int fd,OFF_T len)
-{
-	struct map_struct *ret;
-	ret = (struct map_struct *)malloc(sizeof(*ret));
-	if (!ret) out_of_memory("map_file");
-
-	ret->map = NULL;
-	ret->fd = fd;
-	ret->size = len;
-	ret->p = NULL;
-	ret->p_size = 0;
-	ret->p_offset = 0;
-	ret->p_len = 0;
-
-#ifdef USE_MMAP
-	len = MIN(len, MAX_MAP_SIZE);
-	ret->map = (char *)do_mmap(NULL,len,PROT_READ,MAP_SHARED,fd,0);
-	if (ret->map == (char *)-1) {
-		ret->map = NULL;
-	} else {
-		ret->p_len = len;
-	}
-#endif
-	return ret;
-}
-
-
-char *map_ptr(struct map_struct *map,OFF_T offset,int len)
-{
-	int nread;
-
-	if (len == 0) 
-		return NULL;
-
-	if (len > (map->size-offset))
-		len = map->size-offset;
-
-#ifdef USE_MMAP
-	if (map->map) {
-		if (offset >= map->p_offset && 
-		    offset+len <= map->p_offset+map->p_len) {
-			return (map->map + (offset - map->p_offset));
-		}
-		if (munmap(map->map, map->p_len) != 0) {
-			rprintf(FERROR,"munmap failed : %s\n", strerror(errno));
-			exit_cleanup(1);
-		}
-
-		/* align the mmap region on a nice boundary back a bit from
-		   where it is asked for to allow for some seeking */
-		if (offset > 2*CHUNK_SIZE) {
-			map->p_offset = offset - 2*CHUNK_SIZE;
-			map->p_offset &= ~((OFF_T)(CHUNK_SIZE-1));
-		} else {
-			map->p_offset = 0;
-		}
-		
-		/* map up to MAX_MAP_SIZE */
-		map->p_len = MAX(len, MAX_MAP_SIZE);
-		map->p_len = MIN(map->p_len, map->size - map->p_offset);
-
-		map->map = (char *)do_mmap(NULL,map->p_len,PROT_READ,
-					   MAP_SHARED,map->fd,map->p_offset);
-
-		if (map->map == (char *)-1) {
-			map->map = NULL;
-			map->p_len = 0;
-			map->p_offset = 0;
-		} else {
-			return (map->map + (offset - map->p_offset));
-		}
-	}
-#endif
-
-	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;
-
-	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;
-	}
-
-	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);
-	}
-
-	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; 
-}
-
-
-void unmap_file(struct map_struct *map)
-{
-#ifdef USE_MMAP
-	if (map->map) {
-		munmap(map->map,map->p_len);
-		map->map = NULL;
-	}
-#endif
-	if (map->p) {
-		free(map->p);
-		map->p = NULL;
-	}
-	memset(map, 0, sizeof(*map));
-	free(map);
-}
-
 
 /* this is taken from CVS */
 int piped_child(char **command,int *f_in,int *f_out)
@@ -302,36 +177,6 @@ int set_modtime(char *fname,time_t modtime)
 }
 
 
-
-/****************************************************************************
-Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
-else
-if SYSV use O_NDELAY
-if BSD use FNDELAY
-****************************************************************************/
-int set_blocking(int fd, int set)
-{
-  int val;
-#ifdef O_NONBLOCK
-#define FLAG_TO_SET O_NONBLOCK
-#else
-#ifdef SYSV
-#define FLAG_TO_SET O_NDELAY
-#else /* BSD */
-#define FLAG_TO_SET FNDELAY
-#endif
-#endif
-
-  if((val = fcntl(fd, F_GETFL, 0)) == -1)
-	return -1;
-  if(set) /* Turn blocking on - ie. clear nonblock flag */
-	val &= ~FLAG_TO_SET;
-  else
-    val |= FLAG_TO_SET;
-  return fcntl( fd, F_SETFL, val);
-#undef FLAG_TO_SET
-}
-
 /****************************************************************************
 create any necessary directories in fname. Unfortunately we don't know
 what perms to give the directory when this is called so we need to rely