remove unused lxc_copy_file

src/lxc/utils.c

@@ -39,77 +39,6 @@
 
 lxc_log_define(lxc_utils, lxc);
 
-int lxc_copy_file(const char *srcfile, const char *dstfile)
-{
-	void *srcaddr = NULL, *dstaddr;
-	struct stat stat;
-	int srcfd, dstfd, ret = -1;
-	char c = '\0';
-
-	dstfd = open(dstfile, O_CREAT | O_EXCL | O_RDWR, 0600);
-	if (dstfd < 0) {
-		SYSERROR("failed to creat '%s'", dstfile);
-		goto out;
-	}
-
-	srcfd = open(srcfile, O_RDONLY);
-	if (srcfd < 0) {
-		SYSERROR("failed to open '%s'", srcfile);
-		goto err;
-	}
-
-	if (fstat(srcfd, &stat)) {
-		SYSERROR("failed to stat '%s'", srcfile);
-		goto err;
-	}
-
-	if (!stat.st_size) {
-		INFO("copy '%s' which is an empty file", srcfile);
-		ret = 0;
-		goto out_close;
-	}
-
-	if (lseek(dstfd, stat.st_size - 1, SEEK_SET) < 0) {
-		SYSERROR("failed to seek dest file '%s'", dstfile);
-		goto err;
-	}
-
-	/* fixup length */
-	if (write(dstfd, &c, 1) < 0) {
-		SYSERROR("failed to write to '%s'", dstfile);
-		goto err;
-	}
-
-	srcaddr = mmap(NULL, stat.st_size, PROT_READ, MAP_SHARED, srcfd, 0L);
-	if (srcaddr == MAP_FAILED) {
-		SYSERROR("failed to mmap '%s'", srcfile);
-		goto err;
-	}
-
-	dstaddr = mmap(NULL, stat.st_size, PROT_WRITE, MAP_SHARED, dstfd, 0L);
-	if (dstaddr == MAP_FAILED) {
-		SYSERROR("failed to mmap '%s'", dstfile);
-		goto err;
-	}
-
-	ret = 0;
-
-	memcpy(dstaddr, srcaddr, stat.st_size);
-
-	munmap(dstaddr, stat.st_size);
-out_mmap:
-	if (srcaddr)
-		munmap(srcaddr, stat.st_size);
-out_close:
-	close(dstfd);
-	close(srcfd);
-out:
-	return ret;
-err:
-	unlink(dstfile);
-	goto out_mmap;
-}
-
 static int mount_fs(const char *source, const char *target, const char *type)
 {
 	/* the umount may fail */

src/lxc/utils.h

@@ -23,7 +23,6 @@
 #ifndef _utils_h
 #define _utils_h
 
-extern int lxc_copy_file(const char *src, const char *dst);
 extern int lxc_setup_fs(void);
 extern int get_u16(unsigned short *val, const char *arg, int base);
 extern int mkdir_p(const char *dir, mode_t mode);