diff options
| author | Guo Ren <ren_guo@c-sky.com> | 2017-09-25 21:20:42 +0800 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2017-10-01 08:54:33 +0200 |
| commit | 7cfd2112acbc7a9dfcd9f8a23e550672934a2545 (patch) | |
| tree | f3283fd3a74991d3b332e9aba5ba5943ce851285 /libc/misc/statfs/fstatfs64.c | |
| parent | 8b233f2491b286a2bd741b042719fdf5fde50eb2 (diff) | |
statfs: bugfix statfs02 fstatfs02 failed in ltp-testsuite
In the test-case of statfs from ltp-testsuite, it pass -1 to 2th
argument. eg: fstatfs(fd , -1)
When uclibc-ng parse the buf32 to buf will cause illegal address
access, the kernel will signal the process with SIGSEGV.
If we pass the -1 directly to the syscall of statfs/fstatfs, kernel
use copy_to_user() to prevent the signal of SIGSEGV and just return
EINVAL.
This is the ltp-testsuite expect.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Diffstat (limited to 'libc/misc/statfs/fstatfs64.c')
| -rw-r--r-- | libc/misc/statfs/fstatfs64.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libc/misc/statfs/fstatfs64.c b/libc/misc/statfs/fstatfs64.c index 7221a0b79..bb9ca3063 100644 --- a/libc/misc/statfs/fstatfs64.c +++ b/libc/misc/statfs/fstatfs64.c @@ -33,9 +33,11 @@ int fstatfs64 (int fd, struct statfs64 *buf) { struct statfs buf32; - if (__libc_fstatfs (fd, &buf32) < 0) + if (__libc_fstatfs (fd, (struct statfs *)buf) < 0) return -1; + buf32 = *(struct statfs *)buf; + buf->f_type = buf32.f_type; buf->f_bsize = buf32.f_bsize; buf->f_blocks = buf32.f_blocks; |