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sandbox: fix return type of os_filesize()

Given a file ../img of size 4294967296 with GPT partition table and
partitions:

=> host bind 0 ../img
=> part list host 0
Disk host-0.blk not ready

The cause is os_filesize() returning int. File sizes must use off_t.

Correct all uses of os_filesize() too.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Heinrich Schuchardt 1 year ago
parent
commit
1a07d39521
3 changed files with 9 additions and 4 deletions
  1. 6 2
      arch/sandbox/cpu/os.c
  2. 2 1
      drivers/block/host_dev.c
  3. 1 1
      include/os.h

+ 6 - 2
arch/sandbox/cpu/os.c

@@ -166,7 +166,7 @@ int os_write_file(const char *fname, const void *buf, int size)
 	return 0;
 }
 
-int os_filesize(int fd)
+off_t os_filesize(int fd)
 {
 	off_t size;
 
@@ -218,7 +218,7 @@ err:
 int os_map_file(const char *pathname, int os_flags, void **bufp, int *sizep)
 {
 	void *ptr;
-	int size;
+	off_t size;
 	int ifd;
 
 	ifd = os_open(pathname, os_flags);
@@ -231,6 +231,10 @@ int os_map_file(const char *pathname, int os_flags, void **bufp, int *sizep)
 		printf("Cannot get file size of '%s'\n", pathname);
 		return -EIO;
 	}
+	if ((unsigned long long)size > (unsigned long long)SIZE_MAX) {
+		printf("File '%s' too large to map\n", pathname);
+		return -EIO;
+	}
 
 	ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
 	if (ptr == MAP_FAILED) {

+ 2 - 1
drivers/block/host_dev.c

@@ -24,7 +24,8 @@ static int host_sb_attach_file(struct udevice *dev, const char *filename)
 	struct host_sb_plat *plat = dev_get_plat(dev);
 	struct blk_desc *desc;
 	struct udevice *blk;
-	int ret, fd, size;
+	int ret, fd;
+	off_t size;
 	char *fname;
 
 	if (!filename)

+ 1 - 1
include/os.h

@@ -64,7 +64,7 @@ off_t os_lseek(int fd, off_t offset, int whence);
  * @fd:		File descriptor as returned by os_open()
  * Return:	file size or negative error code
  */
-int os_filesize(int fd);
+off_t os_filesize(int fd);
 
 /**
  * Access to the OS open() system call