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 --- v2: avoid different signedness when comparing numbers --- arch/sandbox/cpu/os.c | 8 ++++++-- drivers/block/host_dev.c | 3 ++- include/os.h | 2 +- 3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 5e66304e2b..f8ad208e46 100644 --- a/arch/sandbox/cpu/os.c +++ b/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) { diff --git a/drivers/block/host_dev.c b/drivers/block/host_dev.c index 5885fc358a..64422417b7 100644 --- a/drivers/block/host_dev.c +++ b/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) diff --git a/include/os.h b/include/os.h index 0415f0f0e7..968412b0a8 100644 --- a/include/os.h +++ b/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