Shuffle location of generic code into utility.c

-Erik

internal.h

@@ -177,6 +177,8 @@ extern pid_t findInitPid();
 
 #if defined BB_FEATURE_MOUNT_LOOP
 extern int del_loop(const char *device);
+extern int set_loop(const char *device, const char *file, int offset, int *loopro);
+extern char *find_unused_loop_device (void);
 #endif
 
 #if defined BB_GUNZIP || defined BB_GZIP || defined BB_PRINTF || defined BB_TAIL

mount.c

@@ -51,8 +51,6 @@
 #include <sys/ioctl.h>
 #include <linux/loop.h>
 
-static int set_loop(const char *device, const char *file, int offset, int *loopro);
-static char *find_unused_loop_device (void);
 
 static int use_loop = 0;
 #endif
@@ -177,75 +175,6 @@ extern void whine_if_fstab_is_missing()
 #endif
 
 
-#if defined BB_FEATURE_MOUNT_LOOP
-static int set_loop(const char *device, const char *file, int offset, int *loopro)
-{
-	struct loop_info loopinfo;
-	int	fd, ffd, mode;
-	
-	mode = *loopro ? O_RDONLY : O_RDWR;
-	if ((ffd = open (file, mode)) < 0 && !*loopro
-	    && (errno != EROFS || (ffd = open (file, mode = O_RDONLY)) < 0)) {
-	  perror (file);
-	  return 1;
-	}
-	if ((fd = open (device, mode)) < 0) {
-	  close(ffd);
-	  perror (device);
-	  return 1;
-	}
-	*loopro = (mode == O_RDONLY);
-
-	memset(&loopinfo, 0, sizeof(loopinfo));
-	strncpy(loopinfo.lo_name, file, LO_NAME_SIZE);
-	loopinfo.lo_name[LO_NAME_SIZE-1] = 0;
-
-	loopinfo.lo_offset = offset;
-
-	loopinfo.lo_encrypt_key_size = 0;
-	if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
-		perror("ioctl: LOOP_SET_FD");
-		close(fd);
-		close(ffd);
-		return 1;
-	}
-	if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
-		(void) ioctl(fd, LOOP_CLR_FD, 0);
-		perror("ioctl: LOOP_SET_STATUS");
-		close(fd);
-		close(ffd);
-		return 1;
-	}
-	close(fd);
-	close(ffd);
-	return 0;
-}
-
-char *find_unused_loop_device (void)
-{
-	char dev[20];
-	int i, fd;
-	struct stat statbuf;
-	struct loop_info loopinfo;
-
-	for(i = 0; i <= 7; i++) {
-	    sprintf(dev, "/dev/loop%d", i);
-	    if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
-		if ((fd = open (dev, O_RDONLY)) >= 0) {
-		    if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == -1) {
-			if (errno == ENXIO) { /* probably free */
-			    close (fd);
-			    return strdup(dev);
-			}
-		    }
-		    close (fd);
-		}
-	    }
-	}
-        return NULL;
-}
-#endif /* BB_FEATURE_MOUNT_LOOP */
-
 /* Seperate standard mount options from the nonstandard string options */
 static void
 parse_mount_options ( char *options, unsigned long *flags, char *strflags)

util-linux/mount.c

@@ -51,8 +51,6 @@
 #include <sys/ioctl.h>
 #include <linux/loop.h>
 
-static int set_loop(const char *device, const char *file, int offset, int *loopro);
-static char *find_unused_loop_device (void);
 
 static int use_loop = 0;
 #endif
@@ -177,75 +175,6 @@ extern void whine_if_fstab_is_missing()
 #endif
 
 
-#if defined BB_FEATURE_MOUNT_LOOP
-static int set_loop(const char *device, const char *file, int offset, int *loopro)
-{
-	struct loop_info loopinfo;
-	int	fd, ffd, mode;
-	
-	mode = *loopro ? O_RDONLY : O_RDWR;
-	if ((ffd = open (file, mode)) < 0 && !*loopro
-	    && (errno != EROFS || (ffd = open (file, mode = O_RDONLY)) < 0)) {
-	  perror (file);
-	  return 1;
-	}
-	if ((fd = open (device, mode)) < 0) {
-	  close(ffd);
-	  perror (device);
-	  return 1;
-	}
-	*loopro = (mode == O_RDONLY);
-
-	memset(&loopinfo, 0, sizeof(loopinfo));
-	strncpy(loopinfo.lo_name, file, LO_NAME_SIZE);
-	loopinfo.lo_name[LO_NAME_SIZE-1] = 0;
-
-	loopinfo.lo_offset = offset;
-
-	loopinfo.lo_encrypt_key_size = 0;
-	if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
-		perror("ioctl: LOOP_SET_FD");
-		close(fd);
-		close(ffd);
-		return 1;
-	}
-	if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
-		(void) ioctl(fd, LOOP_CLR_FD, 0);
-		perror("ioctl: LOOP_SET_STATUS");
-		close(fd);
-		close(ffd);
-		return 1;
-	}
-	close(fd);
-	close(ffd);
-	return 0;
-}
-
-char *find_unused_loop_device (void)
-{
-	char dev[20];
-	int i, fd;
-	struct stat statbuf;
-	struct loop_info loopinfo;
-
-	for(i = 0; i <= 7; i++) {
-	    sprintf(dev, "/dev/loop%d", i);
-	    if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
-		if ((fd = open (dev, O_RDONLY)) >= 0) {
-		    if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == -1) {
-			if (errno == ENXIO) { /* probably free */
-			    close (fd);
-			    return strdup(dev);
-			}
-		    }
-		    close (fd);
-		}
-	    }
-	}
-        return NULL;
-}
-#endif /* BB_FEATURE_MOUNT_LOOP */
-
 /* Seperate standard mount options from the nonstandard string options */
 static void
 parse_mount_options ( char *options, unsigned long *flags, char *strflags)

utility.c

@@ -1169,6 +1169,74 @@ extern int del_loop(const char *device)
     close(fd);
     return( TRUE);
 }
-#endif
+
+extern int set_loop(const char *device, const char *file, int offset, int *loopro)
+{
+	struct loop_info loopinfo;
+	int	fd, ffd, mode;
+	
+	mode = *loopro ? O_RDONLY : O_RDWR;
+	if ((ffd = open (file, mode)) < 0 && !*loopro
+	    && (errno != EROFS || (ffd = open (file, mode = O_RDONLY)) < 0)) {
+	  perror (file);
+	  return 1;
+	}
+	if ((fd = open (device, mode)) < 0) {
+	  close(ffd);
+	  perror (device);
+	  return 1;
+	}
+	*loopro = (mode == O_RDONLY);
+
+	memset(&loopinfo, 0, sizeof(loopinfo));
+	strncpy(loopinfo.lo_name, file, LO_NAME_SIZE);
+	loopinfo.lo_name[LO_NAME_SIZE-1] = 0;
+
+	loopinfo.lo_offset = offset;
+
+	loopinfo.lo_encrypt_key_size = 0;
+	if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
+		perror("ioctl: LOOP_SET_FD");
+		close(fd);
+		close(ffd);
+		return 1;
+	}
+	if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
+		(void) ioctl(fd, LOOP_CLR_FD, 0);
+		perror("ioctl: LOOP_SET_STATUS");
+		close(fd);
+		close(ffd);
+		return 1;
+	}
+	close(fd);
+	close(ffd);
+	return 0;
+}
+
+extern char *find_unused_loop_device (void)
+{
+	char dev[20];
+	int i, fd;
+	struct stat statbuf;
+	struct loop_info loopinfo;
+
+	for(i = 0; i <= 7; i++) {
+	    sprintf(dev, "/dev/loop%d", i);
+	    if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
+		if ((fd = open (dev, O_RDONLY)) >= 0) {
+		    if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == -1) {
+			if (errno == ENXIO) { /* probably free */
+			    close (fd);
+			    return strdup(dev);
+			}
+		    }
+		    close (fd);
+		}
+	    }
+	}
+        return NULL;
+}
+#endif /* BB_FEATURE_MOUNT_LOOP */
+
 
 /* END CODE */