mirror of https://gitee.com/openkylin/linux.git
b5ac1fb271
When reading 0 bytes from an empty file on a 9P filesystem, the return
code of read() was not 0 as expected due to an unitialized err variable.
Tested with this simple program:
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
int main(int argc, const char **argv)
{
assert(argc == 2);
char buffer[256];
int fd = open(argv[1], O_RDONLY|O_NOCTTY);
assert(fd >= 0);
assert(read(fd, buffer, 0) == 0);
return 0;
}
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| acl.c | ||
| acl.h | ||
| cache.c | ||
| cache.h | ||
| fid.c | ||
| fid.h | ||
| v9fs.c | ||
| v9fs.h | ||
| v9fs_vfs.h | ||
| vfs_addr.c | ||
| vfs_dentry.c | ||
| vfs_dir.c | ||
| vfs_file.c | ||
| vfs_inode.c | ||
| vfs_inode_dotl.c | ||
| vfs_super.c | ||
| xattr.c | ||
| xattr.h | ||
| xattr_security.c | ||
| xattr_trusted.c | ||
| xattr_user.c | ||