diff options
| -rw-r--r-- | arch/um/os-Linux/mem.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c index d24d1a9..560c806 100644 --- a/arch/um/os-Linux/mem.c +++ b/arch/um/os-Linux/mem.c @@ -210,8 +210,11 @@ int create_tmp_file(unsigned long long len) exit(1); } - if (lseek64(fd, len, SEEK_SET) < 0) { - perror("os_seek_file"); + /* Seek to len - 1 because writing a character there will + * increase the file size by one byte, to the desired length. + */ + if (lseek64(fd, len - 1, SEEK_SET) < 0) { + perror("os_seek_file"); exit(1); } |
